WO2014075588A1 - 协作频谱感知方法和设备 - Google Patents

协作频谱感知方法和设备 Download PDF

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Publication number
WO2014075588A1
WO2014075588A1 PCT/CN2013/086820 CN2013086820W WO2014075588A1 WO 2014075588 A1 WO2014075588 A1 WO 2014075588A1 CN 2013086820 W CN2013086820 W CN 2013086820W WO 2014075588 A1 WO2014075588 A1 WO 2014075588A1
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Prior art keywords
interference
sensing
base station
cooperative
serving base
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PCT/CN2013/086820
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English (en)
French (fr)
Inventor
李媛媛
白文岭
蒋成钢
杨宇
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电信科学技术研究院
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Publication of WO2014075588A1 publication Critical patent/WO2014075588A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/20Arrangements for detecting or preventing errors in the information received using signal quality detector
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a cooperative spectrum sensing method and apparatus. Background technique
  • the radio communication spectrum is a valuable resource. With the rapid development of wireless communication technology, the problem of poor spectrum resources is becoming more and more serious.
  • certain frequency bands such as television bands
  • multiple systems and multiple users compete for a certain frequency band at the same time.
  • the CR (Cognitive Radio) system is a type of shared frequency band system. The basic idea of the CR system is: Under the premise of not causing interference to the authorized system, the CR system can dynamically access the blank band for communication by monitoring changes in the current wireless environment.
  • the application scenarios of CR are mainly divided into two categories: the first is the spectrum of the opportunistic use authorization system; the second is the opportunity for multiple CR systems to use a certain frequency band, which is not affiliated with any system.
  • the multiple CR systems use a certain frequency band fairly, that is, when a certain frequency band is idle
  • the plurality of CR systems use the frequency band or use (unfairly) the frequency short according to a certain priority.
  • the other CR systems ie, the priority is lower than the priority
  • the CR system of the CR system stops using this band.
  • the service performance of the authorization system or the high priority system is required. Based on this requirement: (1) The CR system can accurately determine which frequency bands are available for white space (ie, if a CR system uses these bands, it will not affect the normal operation of the authorized system or CR system with higher priority. (2) When the frequency band in use is no longer available, the CR system needs to stop using these bands in time to allow the authorized system or a higher priority CR system to use these bands.
  • Spectrum sensing refers to determining whether the authorized system or a higher priority system occupies the target spectrum by detecting the signal of the authorized system or the higher priority system on the target spectrum, that is, determining whether the target spectrum is occupied or idle. status. Due to the hidden terminal problems caused by shadow effects, multipath fading, etc., a CR system using a single point of perceived white space spectrum may interfere with the communication of authorized users. To understand this problem, in the CR system, collaborative sensing is used to improve the perceived performance of the spectrum. The basic principle of the perception is: Using the cooperative sensing nodes located in multiple geographical locations to perceive the spatial spectrum, obtain the perceived results and improve the perceived performance.
  • the implementation process of the current cooperative spectrum sensing includes: configuring a plurality of sensing nodes (base stations or terminals) for sensing a certain target spectrum, using the plurality of sensing nodes to perceive the target spectrum, and reporting the spectrum sensing result to the cooperative sensing
  • the management device ie, the convergence center
  • Embodiments of the present invention provide a cooperative spectrum sensing method and device for selecting a suitable sensing node to improve detection performance of cooperative sensing.
  • an embodiment of the present invention provides a cooperative spectrum sensing method, including:
  • the cooperative sensing management device receives the interference alarm information from the serving base station for reporting the interference alarm information, where the interference alarm information carries the interference source incoming wave direction and the interference source frequency point; the cooperative sensing management device uses the interference source to generate the wave The direction and the interference source frequency point determine the interference alarm information corresponding to the same interference source;
  • the cooperative sensing management device selects a serving base station for performing cooperative spectrum sensing for the interference source by using interference alert information corresponding to the same interference source;
  • the cooperative sensing management device sends, to the serving base station for performing cooperative spectrum sensing, a cooperative sensing command indicating that the serving base station for performing cooperative spectrum sensing performs spectrum sensing, from the service for performing cooperative spectrum sensing
  • the base station receives the spectrum sensing result, and determines the cooperative spectrum sensing decision result by using the spectrum sensing result.
  • An embodiment of the present invention provides a cooperative spectrum sensing method, including:
  • the serving base station receives interference source information from a plurality of alarm terminals for reporting interference source information, where the interference source information includes an interference source incoming wave direction and an interference source frequency point; and the interference source is used to generate a wave direction and an interference source frequency. Point determining the direction of the incoming wave corresponding to the same interference source and the frequency of the dry source;
  • the serving base station reports the interference alarm information to the cooperative sensing management device, where the interference alarm information carries the interference source direction and the interference source frequency corresponding to the interference source;
  • the cooperative sensing management device determines the interference alarm information corresponding to the same interference source by using the interference source direction and the interference source frequency point, and uses the interference alarm information corresponding to the same interference source to select the interference source.
  • a serving base station that performs cooperative spectrum sensing;
  • the serving base station After receiving the cooperative sensing command indicating the spectrum sensing from the cooperative sensing management device, the serving base station sends the cooperative sensing command to the alarm terminal for sensing the spectrum, and receives the alarm terminal for sensing the spectrum.
  • the received spectrum sensing result is sent to the cooperative sensing management device; and the cooperative sensing management device determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • An embodiment of the present invention provides a cooperative spectrum sensing method, including:
  • the alarm terminal reports the interference source information to the serving base station for reporting the interference alarm information, where the interference source information includes the interference source incoming wave direction and the interference source frequency point; and the serving base station for reporting the interference warning information transmits the interference source information. Evaluating to the cooperative sensing management device, and selecting, by the cooperative sensing management device, the serving base station for performing cooperative spectrum sensing by using the information reported by the serving base station for reporting the interference alert information;
  • the alarm terminal After receiving the cooperative sensing command indicating the spectrum sensing from the serving base station for performing cooperative spectrum sensing, the alarm terminal performs a spectrum sensing process, and sends a spectrum sensing result to the cooperative spectrum sensing for performing
  • the serving base station sends the received spectrum sensing result to the cooperative sensing management device by the serving base station for performing cooperative spectrum sensing, and determines, by the cooperative sensing management device, the cooperative spectrum by using the received spectrum sensing result. Perceive the judgment result.
  • An embodiment of the present invention provides a collaboration awareness management device, including:
  • a receiving module configured to receive interference alarm information from a serving base station for reporting interference warning information, where the interference alarm information carries an interference source incoming wave direction and an interference source frequency point; and a determining module, configured to use the interference source The incoming wave direction and the interference source frequency point determine interference warning information corresponding to the same interference source; a selection module, configured to select a serving base station for performing cooperative spectrum sensing for the interference source by using interference alarm information corresponding to the same interference source;
  • a spectrum sensing module configured to send, to the serving base station for performing cooperative spectrum sensing, a cooperative sensing command indicating that the serving base station for performing cooperative spectrum sensing performs spectrum sensing, and receiving the each for performing cooperative spectrum sensing
  • the spectrum sensing result reported by the serving base station determines the cooperative spectrum sensing decision result by using the spectrum sensing result.
  • An embodiment of the present invention provides a serving base station, including:
  • a receiving module configured to receive interference source information from multiple alarm terminals for reporting interference source information, where the interference source information includes an interference source incoming wave direction and an interference source frequency point;
  • a determining module configured to determine, by using the interference source direction and the interference source frequency point, an interference source corresponding to the same interference source and an interference source frequency point;
  • a sending module configured to report interference alarm information to the cooperative sensing management device, where the interference alarm information carries an interference source incoming wave direction and an interference source frequency point corresponding to the interference source; and the cooperative sensing management device utilizes the The interference source incoming wave direction and the interference source frequency point determine interference alarm information corresponding to the same interference source, and the interference base station corresponding to the same interference source is used to select a serving base station for performing cooperative spectrum sensing for the interference source;
  • a spectrum sensing module configured to: after receiving a cooperative sensing command from the cooperative sensing management device for indicating spectrum sensing, send a cooperative sensing command to an alarm terminal for sensing a spectrum, and receive the sensing terminal for sensing
  • the spectrum sensing result reported by the alarm terminal of the spectrum sends the received spectrum sensing result to the cooperative sensing management device; and the cooperative sensing management device determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • An embodiment of the invention provides an alarm terminal, including:
  • a sending module configured to report interference source information to a serving base station for reporting interference alarm information, where the interference source information includes an interference source incoming wave direction and an interference source frequency point; and the serving base station used for reporting the interference alarm information
  • the interference source information is reported to the collaborative sensing management device, and Selecting, by the cooperative sensing management device, the serving base station for performing cooperative spectrum sensing by using the information reported by the serving base station for reporting the interference alarm information;
  • a spectrum sensing module configured to perform a spectrum sensing process after receiving a spectrum sensing request from the serving base station for performing cooperative spectrum sensing, and send a spectrum sensing result to the performing collaboration a spectrum-aware serving base station; the spectrum sensing result received by the serving base station for performing cooperative spectrum sensing is sent to the cooperative sensing management device, and is determined by the cooperative sensing management device by using the received spectrum sensing result Cooperative spectrum sensing decision results.
  • the embodiment of the present invention has at least the following advantages:
  • the cooperative sensing management device receives the interference alarm information of each serving base station for reporting the interference alarm information, and utilizes the same interference source.
  • the interference alarm information selects a serving base station for performing cooperative spectrum sensing for the interference source, and can select the most suitable sensing node for performing cooperative spectrum sensing, thereby ensuring the detection performance of the cooperative sensing.
  • the serving base station can deliver the cooperative sensing command to multiple alarm terminals for sensing the spectrum, thereby reducing the burden on the service base station.
  • Figure la is a schematic flowchart of a cooperative spectrum sensing method according to an embodiment of the present invention
  • Figure lb is a schematic flowchart of another cooperative spectrum sensing method according to an embodiment of the present invention.
  • Figure lc is a flow diagram of another cooperative spectrum sensing method provided by an embodiment of the present invention. Intention
  • FIG. 1 is a schematic flow chart of another cooperative spectrum sensing method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a cooperative spectrum sensing method according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a cooperative sensing management device according to an embodiment of the present invention
  • FIG. 4 is a serving base station according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an alarm terminal according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a cooperative sensing management device according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a serving base station according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of an alarm terminal according to an embodiment of the present invention.
  • the technical solutions in the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • Embodiments of the present invention provide a cooperative spectrum sensing method, which can be applied to a cognitive radio technology system.
  • These systems include: LTE (Long Term Evolution) system, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system, GSM (Global System of Mobile communication) system , WCDMA (Wideband Code Division Multiple Access) system, CDMA-2000 (Code Division Multiple Access 2000) system and WLAN (Wireless Local) Mobile communication systems such as Area Networks, Wireless LAN.
  • LTE Long Term Evolution
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • GSM Global System of Mobile communication
  • WCDMA Wideband Code Division Multiple Access
  • CDMA-2000 Code Division Multiple Access 2000
  • WLAN Wireless Local
  • FIG. 1 is a schematic flowchart of a cooperative spectrum sensing method according to an embodiment of the present invention.
  • Step 101a The cooperative sensing management device receives interference alarm information from the serving base station for reporting the interference alarm information, where the interference alarm information carries the interference source incoming wave direction and the interference source frequency point.
  • Step 102a The cooperative sensing management device uses the interference source incoming wave direction and the interference source frequency point to determine interference alarm information corresponding to the same interference source.
  • Step 103a The cooperative sensing management device selects a serving base station for performing cooperative spectrum sensing for the interference source by using interference alarm information corresponding to the same interference source.
  • Step 104a the cooperative sensing management device sends, to the serving base station for performing cooperative spectrum sensing, a cooperative sensing command indicating that the serving base station for performing cooperative spectrum sensing performs spectrum sensing, from the performing cooperative spectrum
  • the perceived serving base station receives the spectrum sensing result, and uses the spectrum sensing result to determine the cooperative spectrum sensing decision result.
  • FIG. 1b is a schematic flowchart of a cooperative spectrum sensing method according to an embodiment of the present invention.
  • Step 101b The serving base station receives interference source information from a plurality of alarm terminals for reporting interference source information, where the interference source information includes an interference source incoming wave direction and an interference source frequency point, and uses the interference source to obtain a wave direction and The interference source frequency point determines the interference source direction and the interference source frequency point corresponding to the same interference source.
  • Step 102b the serving base station reports the interference alarm information to the cooperative sensing management device, where the interference alarm information carries the interference source incoming wave direction and the interference source frequency point corresponding to the interference source, and is used by the cooperative sensing management device.
  • the interference source incoming wave direction and the interference source frequency point determine interference alarm information corresponding to the same interference source, and the interference base station corresponding to the same interference source is used to select a serving base station for performing cooperative spectrum sensing for the interference source.
  • Step 103b after receiving the cooperative sensing command from the cooperative sensing management device to perform spectrum sensing, the serving base station sends a cooperative sensing command to the alarm terminal for sensing the spectrum, and receives the spectrum for sensing.
  • the spectrum sensing result reported by the alarm terminal sends the received spectrum sensing result to the cooperative sensing management device; and the cooperative sensing management device determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • FIG. 1c is a schematic flowchart of a cooperative spectrum sensing method according to an embodiment of the present invention.
  • Step 101c The alarm terminal reports the interference source information to the serving base station for reporting the interference alarm information, where the interference source information includes the interference source incoming wave direction and the interference source frequency point; and the serving base station used for reporting the interference alarm information
  • the interference source information is reported to the cooperative sensing management device, and the cooperative sensing management device selects the serving base station for performing cooperative spectrum sensing by using the information reported by the serving base station for reporting the interference alert information.
  • Step 102c after receiving the cooperative sensing command indicating spectrum sensing from the serving base station for performing cooperative spectrum sensing, the alarm terminal performs a spectrum sensing process, and the serving base station for performing cooperative spectrum sensing receives
  • the obtained spectrum sensing result is sent to the cooperative sensing management device, and the cooperative sensing management device determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • FIG. 1 is a schematic flowchart of another cooperative spectrum sensing method according to an embodiment of the present invention. The method includes the following steps:
  • Step 101 The alarm terminal (UE_alarming) reports the interference source information to the serving base station (BS_Serving).
  • BS_Serving serving base station
  • the alarm terminal in this step is an alarm terminal for reporting interference source information.
  • the alarm terminal is a terminal that normally communicates or a device that only performs sensing detection.
  • the service base A station is a base station device in which an alarm terminal resides or provides service to an alarm terminal.
  • the alarm terminal may decide to enable or disable the interference detection function based on its own policy; and the alarm terminal reports the interference source information to the serving base station after the interference detection function is enabled.
  • the process for the alarm terminal to enable the interference detection function further includes, but is not limited to, the following manners:
  • Method 1 When the number of times the reward information is obtained by the alarm terminal is greater than the preset threshold (can be set according to the actual experience value, such as 3 times), the interference detection function is enabled. Specifically, if the alarm terminal obtains the reward information due to reporting the interference source information (which may be notified to the police terminal by the serving base station), the specific obtaining process will be described in the subsequent steps, and the number of times the reward information is received is greater than the preset threshold. , the alarm terminal automatically activates the interference detection function.
  • the preset threshold can be set according to the actual experience value, such as 3 times
  • the alarm terminal After receiving the command to enable the interference detection function, the alarm terminal turns on the interference detection function. Specifically, when the user (because of certain reward reasons) decides to enable the interference detection function and issues a command to enable the interference detection function to the alarm terminal, the alarm terminal turns on the interference detection function after receiving the command to enable the interference detection function. .
  • Mode 3 When the alarm terminal knows that the current capability of the device can meet the preset capability requirements, the interference detection function is enabled. Specifically, when the current capability of the alarm terminal is strong (such as supporting a large bandwidth, the sensitivity of the sensing detection algorithm is high, the battery capacity is high, etc.), the alarm terminal can voluntarily turn on the interference detection function when idle; when the current capability of the alarm terminal is poor (If support for smaller bandwidth, low sensitivity of the sensing detection algorithm, low battery capacity, etc.), the alarm terminal turns off the interference detection function.
  • the process for the alarm terminal to report the interference source information to the serving base station further includes, but is not limited to, the following:
  • Method 1 Reporting by means of event triggering; Specifically, when the alarm terminal finds interference on a certain frequency band (that is, detects the interference source), it provides the available base station to the serving base station. Reporting the interference source information; wherein, if the alarm terminal is in the communication state, the current resource is available, and the interference source information can be directly reported by using the available resource; if the alarm terminal is not in the communication state, there is currently no available resource, and the available resource needs to be applied. The interference source information is reported through the available resources of the application.
  • the periodic reporting is performed by using a pre-defined reporting period.
  • the reporting period and the resources for carrying the reporting information are set by the serving base station.
  • the serving base station can set the same reporting period and bearer for all alarm terminals in the coverage.
  • the resource for reporting the information is sent to each alarm terminal through the public signaling.
  • the serving base station can separately set the reporting period and the resource carrying the reporting information for each alarm terminal, and send the resource to the alarm terminal through dedicated signaling. .
  • a preferred method for determining the position of the period may be: when the radio frame and the radio subframe position satisfy (SFN+subframe) mod ( N ) ⁇ offset, the alarm terminal reports the interference source information to the serving base station.
  • the SFN and the subframe are the radio frame and the radio subframe number respectively
  • the offset is the offset information
  • N is the reporting period
  • the N and the offset are sent by the serving base station to the alarm terminal; based on the above formula, the terminal can satisfy the above formula
  • the location reports the interference source information.
  • the interference source information includes at least the direction of the interference source (such as the offset angle with respect to the south direction of the alarm terminal, and cannot be determined to be set to NULL) and the interference source frequency; and the interference source information may further include The interference signal receiving strength (for the convenience of subsequent differentiation, the interference signal receiving intensity is the first interference signal receiving strength) and the interference signal type (determined by the sensing detection algorithm used by the alarm terminal, if it can be detected, the signal type, such as the DTMB signal, Can not be detected, set to NULL); and the information reported by the alarm terminal can also include the geographical location information of the alarm terminal and the identity information of the alarm terminal; the information reported by the alarm terminal can be as shown in Table 1, including interference source information, alarm The geographical location information of the terminal and the identity information of the alarm terminal. Table 1
  • Step 102 The serving base station receives interference source information from multiple alarm terminals (the information reported by each alarm terminal may be as shown in Table 1), and uses the interference source to determine the wave direction and the interference source frequency point to correspond to the same dry
  • the source of the source is the source of the wave and the source frequency; and the interference alarm information is reported to the cooperative sensing management device (BS_cooperation); wherein the interference alarm information carries at least the direction of the interference source corresponding to the interference source Interference source frequency point.
  • the serving base station for reporting the interference alert information receives interference source information from a plurality of alarm terminals for reporting the interference source information.
  • the interference source information reported by the alarm terminal further carries an interference signal.
  • the serving base station also needs to determine the receiving strength of the interference signal corresponding to the same interference source by using the interference source direction and the interference source frequency point, and selecting the maximum interference signal receiving strength as the interference signal receiving strength of the interference source;
  • the serving base station also needs to carry the maximum interference signal receiving strength corresponding to the interference source in the interference alarm information.
  • the serving base station may receive the interference source information reported by the multiple alarm terminals, and the received multiple interference source information may be for the same interference source, and the serving base station needs to ensure the interference source information reported to the cooperative sensing management device.
  • the uniqueness of the service base station needs to determine the interference source information corresponding to the same interference source, that is, the interference source whose interference source frequency is the same, and the interference source direction is basically the same as the same interference source;
  • the interference source information of the interference source is added to the interference alarm information, where the interference source information of the interference source includes, but is not limited to, the interference source direction and the interference source frequency point; and the interference source information may further include the interference signal receiving strength, And the interference signal receiving strength is the maximum interference signal receiving strength corresponding to the interference source.
  • the interference signal receiving strength of the interference source is greater than a preset third interference threshold (which may be selected according to actual experience values)
  • interference of the interference source is required.
  • the source information (the interference source direction, the interference source frequency, and the interference signal reception strength) is added to the interference alarm information. Otherwise, the interference source information of the interference source does not need to be added to the interference alarm information; It can also carry the geographic location of the serving base station.
  • the interference alarm information reported by the serving base station to the cooperative sensing management device may be as shown in Table 2.
  • the interference source information of the interference source is in the direction of the interference source (for example, the angle is offset from the south direction of the alarm terminal, and the information cannot be determined.
  • the interference signal type may also include an interference signal type, and the interference alarm information may further include a geographic location of the serving base station and identity information of the serving base station (for characterizing the interference). The system from which the police information comes from is used to determine the reward attribution.
  • the identity information of the serving base station is the system ID and the cell ID of the serving base station; if the cooperative sensing management device The identity information of the serving base station is the system ID and the cell ID of the serving base station. If the cooperative sensing management device and the serving base station belong to the same system, the identity information of the serving base station is the cell ID of the serving base station.
  • Step 103 The cooperative sensing management device receives interference alarm information from multiple serving base stations (at least carrying the interference source incoming wave direction and the interference source frequency point; and may also preferably carry the interference signal).
  • the receiving strength and the geographical location of the serving base station, and the information reported by each serving base station can be as shown in Table 2, and the interference source information corresponding to the same interference source is determined by using the interference source and the interference source frequency.
  • the cooperative sensing management device receives interference alert information from a plurality of serving base stations for reporting interference alert information.
  • the cooperative sensing management device receives the interference alarm information reported by the multiple serving base stations, and the received multiple interference alarm information may be for the same interference source.
  • the cooperative sensing management device needs to determine the corresponding The interference alarm information of an interference source, that is, the cooperative sensing management device determines that the interference source frequency points are the same, and the interference source whose interference source direction is substantially the same is the same interference source; after that, the cooperative sensing management device can determine the interference source corresponding to the interference source Interference alarm information (ie, the interference signal reception strength corresponding to the interference source and the geographical location of the serving base station).
  • Step 104 The cooperative sensing management device uses the interference alarm information of the same interference source (the interference signal receiving strength and the geographic location of the serving base station) to select a serving base station for performing cooperative spectrum sensing for the interference source; wherein the cooperative sensing management device needs A service base station for performing cooperative spectrum sensing is selected for each interference source.
  • the processing of one interference source is taken as an example for subsequent description.
  • the cooperative sensing management device uses the interference alarm information of the same interference source to select a serving base station for performing cooperative spectrum sensing for the interference source, including but not limited to:
  • the cooperative sensing management device determines that the reported interference signal receiving strength is greater than Presetting a first interference threshold P (which may be selected according to actual experience) for serving the base station for reporting the interference alarm information, and selecting a first number of N1s from the determined serving base stations (may be selected according to actual experience)
  • the serving base station (the service base station can be selected in order from the interference signal receiving strength from large to small) is the serving base station corresponding to the interference source for performing cooperative spectrum sensing, thereby ensuring the received signal receiving strength of each selected serving base station Ability to meet collaborative awareness performance requirements.
  • the cooperative sensing management device When a serving base station (such as the serving base station 1) for reporting the interference warning information reports interference alarm information corresponding to the interference source (such as an interference source using frequency point X), the cooperative sensing management device utilizes each service.
  • a serving base station of the number N2 (which can be selected according to actual experience), and the selected serving base station that specifies the second number of Nums and the serving base station 1 are serving base stations corresponding to the interference source for performing cooperative spectrum sensing, thereby ensuring selection
  • the signals received by the respective serving base stations are not related to each other, which in turn makes the results of the cooperative sensing more accurate.
  • Step 105 The cooperative sensing management device sends a cooperative sensing command (for indicating spectrum sensing) to the serving base station, and the serving base station sends the cooperative sensing command to the alarm terminal.
  • a cooperative sensing command for indicating spectrum sensing
  • the cooperative sensing management device sends a cooperative sensing command (for indicating spectrum sensing) to the serving base station for performing cooperative spectrum sensing, and sends the cooperative sensing command to the serving base station for performing cooperative spectrum sensing.
  • a cooperative sensing command for indicating spectrum sensing
  • An alarm terminal that senses the spectrum.
  • Table 3 it is a content content of a preferred cooperative sensing command; wherein the type of reporting information can be divided into soft bits and hard bits, the hard bits directly indicate whether the channel is occupied, and the soft bits are directly measured.
  • the incoming interference signal receives the intensity information.
  • Reporting type detection report type report when target virtual detection
  • the alarm probability interval algorithm time step 106 the alarm terminal performs a spectrum sensing process after receiving the cooperative sensing command, and sends the spectrum sensing result to the serving base station; the serving base station sends the received spectrum sensing result to the cooperative sensing management device; The sensing management device receives the spectrum sensing result reported by each serving base station, and determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • the alarm terminal for sensing the spectrum performs a spectrum sensing process after receiving the cooperative sensing command, and sends the spectrum sensing result to the serving base station for performing cooperative spectrum sensing; the serving base station for performing cooperative spectrum sensing
  • the received spectrum sensing result is sent to the cooperative sensing management device.
  • the cooperative sensing management device receives the spectrum sensing result reported by each serving base station for performing cooperative spectrum sensing, and determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • the serving base station for performing cooperative spectrum sensing may perform a spectrum sensing process after receiving the cooperative sensing command, and directly send the spectrum sensing result to the cooperative sensing management device.
  • the cooperative sensing management device may use the received spectrum sensing result to perform a fusion decision to finally determine a cooperative spectrum sensing decision result, that is, determine Whether the authorization system appears at the target frequency; wherein, the fusion decision process can be divided into a hard decision and a soft decision: in the hard decision, the spectrum sensing result is a 1 or 2 bit local hard decision result (ie, channel occupation or idle), The cooperative sensing management device performs fusion based on multiple local hard decision results, and commonly used hard decision fusion criteria include (and ), or (or ) and voting (voting); in soft decisions, the spectrum sensing result is multi-bit local
  • the soft decision result may be a quantitative detection information (such as energy detection statistics), the cooperative sensing management device performs fusion based on a plurality of local soft decision results, and the commonly used soft decision fusion criteria include linear cooperation, likelihood ratio, and the like, and Common linear collaboration Perceptual fusion criteria include maximum ratio
  • the alarm terminal when the reported information type is a hard bit, if the alarm terminal detects the interference signal receiving strength (for the convenience of distinction, the received signal strength of the interference signal is the second interference signal receiving strength) is greater than the preset second.
  • the interference threshold which can be selected according to actual experience
  • the alarm terminal also needs to send the second interference signal receiving strength (which can be combined with the spectrum sensing result) to the serving base station, and the serving base station sends the second interference signal receiving strength Give collaborative awareness management devices.
  • the cooperative sensing management device receives the second interference signal receiving strength reported by each serving base station (ie, each serving base station selected in step 104) for performing cooperative spectrum sensing, and selects the second interference signal receiving strength reported by each serving base station. a maximum second interference signal receiving strength, and recording a geographic location (precision X, latitude Y) of the serving base station that reports the maximum second interference signal receiving strength; after that, the cooperative sensing management device can receive the largest second interference signal
  • the strength and geographic location (precision X, latitude Y) estimate the interference range and notify the serving base station within the interference range to perform the spectrum backoff operation.
  • the model determines the propagation distance D corresponding to the path loss, and sets the distance between the geographical distance (precision X, precision Y) within the propagation distance D as the interference influence range, ie, the geographic location (accuracy X, precision Y).
  • the serving base station using the interference source corresponding frequency point in the range of D is affected, and the cooperative sensing management device needs to notify the affected serving base station to adopt a spectrum backoff operation at the corresponding frequency point of the interference source.
  • the embodiment of the present invention by receiving interference alarm information of each serving base station, And using the interference alarm information of the same interference source to select a serving base station for performing cooperative spectrum sensing for the interference source, and selecting the most suitable sensing node for performing cooperative spectrum sensing, thereby ensuring the detection performance of the cooperative sensing;
  • the reward mechanism can also trigger the alarm terminal to perform the sensing detection by the self-service auxiliary service base station, so that the serving base station can send the spectrum sensing task to multiple alarm terminals, thereby reducing the burden on the serving base station and making the perceptual detection more targeted.
  • the method provided by the embodiment of the present invention may further include:
  • the cooperative sensing management device may further determine, by using the cooperative spectrum sensing decision result, accuracy information of each of the serving base stations for performing cooperative spectrum sensing, and use the determining result as corresponding
  • the serving base station performing the cooperative spectrum sensing applies for the reward information; and/or the cooperative sensing management device determines the time information of each of the serving base stations for performing the cooperative spectrum sensing to report the interference alarm information, and uses the determined result to be used for executing the cooperative spectrum.
  • the perceived serving base station applies for reward information.
  • the cooperative sensing management device applies for the reward information to the serving base station, and may include the service in the application process.
  • the cell ID of the base station (or the system ID + the cell ID); if the spectrum sensing result reported by the serving base station for performing cooperative spectrum sensing is different from the cooperative spectrum sensing decision result, the cooperative sensing management device does not need to apply to the core network for the serving base station. Reward information.
  • the cooperative sensing management device determines time information for reporting the interference alert information by each serving base station, and determines one or more serving base stations for performing cooperative spectrum sensing at the time when the interference alert information is reported, and time to the core network
  • the former one or more serving base stations apply for the reward information, and may include the cell ID (or system ID + cell ID) of the serving base station in the application process.
  • the cooperative sensing management device may notify the corresponding reward base station to the corresponding serving base station for performing cooperative spectrum sensing; after receiving the reward information from the cooperative sensing management device, the serving base station for performing cooperative spectrum sensing may
  • the reward information can be Know the corresponding alarm terminal (that is, the alarm terminal corresponding to the interference alarm information).
  • the cooperative sensing management device may further quantize the reward level by using the time information of each of the serving base stations for performing cooperative spectrum sensing to report the interference alarm information, and divide the reward information into a plurality of reward levels (such as the first one).
  • the service base station that reports the interference alarm information is the first reward level
  • the second service base station that reports the interference alarm information is the second reward level, and so on, and uses the number to represent the reward level; in the process of applying for the reward information,
  • the bonus level represented by the above is included, and the reward information requested needs to correspond to the reward level; for the reward information finally sent to the alarm terminal, the higher the reward level, the easier the alarm terminal can turn on the interference detection function.
  • the cooperative spectrum sensing method provided by the embodiment of the present invention may further include the following steps:
  • Step 201 The alarm terminal reports the interference source information to the serving base station.
  • BS1_UE1 and BS1JJE2 enable the interference detection function, and detect that there is interference information on the frequency point f3, and report the interference source information to the BS1 where it resides.
  • the report information is shown in Table 5 and Table 6.
  • BSIJJEI has received reward information (such as call charge reward or other service rewards); or, BSIJJEI learned that when the interference detection function is enabled, certain rewards can be obtained, and BSIJJEI capability supports self-initiation of interference detection function, and the owner of BSIJJEI opens autonomously.
  • reward information such as call charge reward or other service rewards
  • BSIJJEI learned that when the interference detection function is enabled, certain rewards can be obtained, and BSIJJEI capability supports self-initiation of interference detection function, and the owner of BSIJJEI opens autonomously.
  • Interference detection function BS1_UE2 has received the number of reward information more than the threshold required to enable the interference detection function, and BS1JJE2 capability support, the BS1J
  • the BSIJJEI and the BS1JJE2 may report the interference source information on the available resources after detecting the interference; or, the BSIJJEI and the BS1JJE2 may report the interference source information according to the reporting period specified by the BS1, and the BSIJJEI and the BS1JJE2 may be reported in the same manner. The period is reported, and it can also be reported according to different reporting periods.
  • N1 may be equal to or not equal to N2
  • offset1 may be equal to or not equal to offset2; when N1 is equal to N2, and offset1 is equal to offset2, it is transmitted through the common channel, otherwise transmitted through the dedicated channel.
  • Interference signal receiving strength P_f3_UE2 Interference source frequency point f3
  • Step 202 The BS1 collects and organizes the interference source information from the BS1JJE1 and the BS1JJE2, and adds the interference source information to the interference alarm information, and reports the interference alarm information to the cooperative sensing management device; because the interference sources reported by BS1JJE1 and BS1JJE2 are the same An interference source, the P_f3_UE1>P_f3_UE2 is obtained by comparing the received signal strength of the interference signal in the interference source information, so when the interference source information is added to the interference alarm information, the interference signal receiving intensity corresponding to the interference source is P_f3_UE1; as shown in Table 7, Interference alert information reported to BS1 for the collaborative awareness management device.
  • Step 203 The cooperative sensing management device determines, according to the interference alarm information reported by the BS1, the serving base station for performing the cooperative spectrum sensing.
  • the interference source has only one interference alarm information (that is, only the BS1 reports the interference corresponding to the interference source. Alert information), therefore
  • the base station whose distance from the BS1 is greater than d is the serving base station for performing cooperative spectrum sensing. If the base station that satisfies the distance requirement is BS2, the serving base stations for performing cooperative spectrum sensing are BS1 and BS2.
  • Step 204 The cooperative sensing management device sends a cooperative sensing command to the BS1 and the BS2, and the reporting information type is a hard bit, and the reporting time is T; the BS2 notifies the subordinate BS2JJE4 and the BS2JJE5 measuring frequency f3, and the BS1 notifies the subordinate BS1_UE1 and BS1_UE2 And BS1_UE3 measures frequency point f3.
  • Step 205 The received signal strengths of the interference signals measured by BS1_UE1, BS1JJE2, and BS1JJE3 are P_f3_UEl', P_f3_UE2', and P_f3_UE3', respectively, and the hard decision results are 1, 1 and 1 respectively (1 indicates that the frequency is occupied), and P_f3_UEl is higher than
  • the preset detection threshold, BS1_UE1 also needs to report the interference signal receiving strength value P_f3_UE1';
  • the decision frequency is not occupied by the interference system (ie, the hard decision result is 0); after receiving the above information, BS1 and BS2 need to forward the above information to the cooperative sensing management device.
  • the cooperative sensing management device performs the merging decision; if the voting criterion is adopted, when the spectrum sensing result of the reporting node exceeds 50%, the cooperative sensing management device determines that the cooperative spectrum sensing decision result is occupied; The spectrum sensing result is obtained on the five nodes, and the spectrum sensing result of the four nodes (more than 5*50%) is occupied. Therefore, the cooperative sensing management device determines that the cooperative spectrum sensing decision result of the frequency point f3 is occupied and is reported to be the strongest.
  • the serving base station to which the node receiving the signal strength belongs is BS1 (XI, Y1), and the strength information is P_f3_UE1'.
  • Step 206 The cooperative sensing management device estimates the interference influence range according to the cooperative spectrum sensing decision result and the strongest interference signal receiving strength, and notifies the base station in the affected range to perform the spectrum backoff operation.
  • Step 207 The collaborative sensing management device applies for a reward for BS1JJE1 and BS1JJE2.
  • the most suitable one may be selected.
  • the sensing node for performing cooperative spectrum sensing ensures the detection performance of the cooperative sensing; and the serving base station can deliver the task of performing cooperative spectrum sensing to multiple alarm terminals, thereby reducing the burden on the serving base station.
  • the embodiment of the present invention further provides a cooperative sensing management device.
  • the collaborative sensing management device includes:
  • the receiving module 11 is configured to receive interference alarm information from the serving base station for reporting the interference alarm information, where the interference alarm information carries the interference source direction and the interference source frequency;
  • a determining module 12 configured to determine interference alarm information corresponding to the same interference source by using the interference source direction and the interference source frequency point;
  • the selecting module 13 is configured to select, by using the interference alarm information corresponding to the same interference source, a serving base station for performing cooperative spectrum sensing for the interference source;
  • a spectrum sensing module 14 configured to send the serving base station for performing cooperative spectrum sensing And transmitting a spectrum sensing result reported by the serving base station for performing cooperative spectrum sensing, and receiving the spectrum sensing result reported by the serving base station for performing cooperative spectrum sensing, and determining the cooperative spectrum by using the spectrum sensing result. Perceive the judgment result.
  • the interference alarm information received by the receiving module 11 further includes a first interference signal receiving strength and a geographic location of the serving base station for reporting the interference warning information; the selecting module 13 is specifically configured to be used when When the serving base station that reports the interference alarm information reports the interference alarm information corresponding to the interference source, it is determined that the reported first interference signal receiving strength is greater than the preset first interference threshold, and the interference is reported.
  • a serving base station for alerting information selecting, from a determined serving base station for reporting the interference alert information, a first number of serving base stations to serve as a serving base station for performing cooperative spectrum sensing corresponding to the interference source; or
  • the serving base station for reporting the interference alarm information reports the interference alarm information corresponding to the interference source
  • the serving base station and the other serving base station for reporting the interference alarm information are obtained by using the geographic location of each serving base station. The distance between them, and select from other service base stations whose distance is greater than the preset distance threshold Two number of the serving base station and the second base station and the number of services for reporting alarm information of the interfering serving base station for said source of interference corresponding to a serving base station for performing cooperative spectrum sensing.
  • the collaboration management module further includes: a reward management module 15 configured to determine, by using the cooperative spectrum sensing decision result, an accuracy degree of the spectrum sensing result reported by each serving base station for performing cooperative spectrum sensing, and using the determination result as a corresponding
  • the serving base station for performing cooperative spectrum sensing applies for the reward information; and/or determines time information for each of the serving base stations for performing cooperative spectrum sensing to report the interference alarm information, and uses the determination result as a corresponding one for performing cooperative spectrum sensing.
  • the serving base station applies for the reward information; and notifies the corresponding reward information to the corresponding serving base station for performing cooperative spectrum sensing.
  • the cooperative sensing command sent by the spectrum sensing module 14 carries an upper information type.
  • the cooperative sensing management device further includes: a spectrum backing management module 16 for Receiving, when the information type is a hard bit, receiving a second interference signal received strength reported by each serving base station for performing cooperative spectrum sensing, where the second interference signal receiving strength is greater than a preset second interference threshold; Selecting a maximum second interference signal reception strength of the second interference signal received strength reported by the serving spectrum-aware serving base station, and recording a geographic location of the serving base station for performing cooperative spectrum sensing by reporting the maximum second interference signal reception strength Positioning: using the maximum second interference signal receiving strength and the geographic location to estimate an interference impact range, and notifying a serving base station within the interference impact range to perform a spectrum backoff operation.
  • the spectrum backoff management module 16 is further configured to determine a path loss by using a maximum value of the maximum second interference signal receiving strength and a disturbance that the victim system can tolerate, and determine a propagation distance corresponding to the path loss, and An area within the propagation distance from the geographic location is set to the interference influence range.
  • the modules of the device of the present invention may be integrated into one or may be deployed separately.
  • the above modules can be combined into one module, or can be further split into multiple sub-modules.
  • the embodiment of the present invention further provides a service base station.
  • the service base station includes:
  • the receiving module 21 is configured to receive interference source information from a plurality of alarm terminals for reporting interference source information, where the interference source information includes an interference source incoming wave direction and an interference source frequency point, and the determining module 22 is configured to use the The interference source incoming wave direction and the interference source frequency point determine the interference source incoming wave direction and the interference source frequency point corresponding to the same interference source;
  • the sending module 23 is configured to report the interference alarm information to the cooperative sensing management device, where the interference alarm information carries the interference source incoming wave direction and the interference source frequency point corresponding to the interference source, and the cooperative sensing management device utilizes the The interference source incoming wave direction and the interference source frequency point determine interference warning information corresponding to the same interference source, and the interference base station corresponding to the same interference source is used to select a serving base station for performing cooperative spectrum sensing for the interference source;
  • the spectrum sensing module 24 is configured to: after receiving the cooperative sensing command from the cooperative sensing management device for indicating spectrum sensing, send the cooperative sensing command to the police terminal for sensing the spectrum, and receive the sensing The spectrum sensing result of the spectrum is transmitted to the cooperative sensing management device by the spectrum sensing result of the spectrum; the cooperative sensing management device determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • the interference source information received by the receiving module 21 further carries a first interference signal receiving strength;
  • the interference alarm information sent by the sending module 23 further carries the interference source corresponding a first interference signal receiving strength and a geographic location of the serving base station, where the first interference signal receiving strength corresponding to the interference source is a maximum first interference signal receiving strength reported by each alarm terminal for reporting the interference source information;
  • the sending module 23 is configured to: when the first interference signal receiving strength corresponding to the interference source is greater than the preset third interference threshold, report the interference alarm information corresponding to the interference source to the cooperative sensing management device.
  • the service base station further includes: a reward management module 25, configured to notify the alarm terminal for reporting the interference source information when receiving the reward information from the collaborative sensing management device.
  • the modules of the device of the present invention may be integrated into one or may be deployed separately.
  • the above modules can be combined into one module, or can be further split into multiple sub-modules.
  • an embodiment of the present invention further provides an alarm terminal.
  • the "3 ⁇ 4 police terminal includes:
  • the sending module 31 is configured to report interference source information to the serving base station for reporting the interference alarm information, where the interference source information includes an interference source incoming wave direction and an interference source frequency point; and the serving base station used for reporting the interference alarm information
  • the interference source information is reported to the cooperative sensing management device, and is reported by the cooperative sensing management device by using each serving base station for reporting the interference alarm information.
  • the spectrum sensing module 32 is configured to perform spectrum sensing on the service for performing cooperative spectrum sensing after receiving the cooperative sensing command for performing spectrum sensing from the serving base station for performing cooperative spectrum sensing.
  • the base station sends the received spectrum sensing result to the cooperative sensing management device, and the cooperative sensing management device determines the cooperative spectrum sensing decision result by using the received spectrum sensing result.
  • the interference source information sent by the sending module 31 further carries the first interference signal receiving strength; and the alarm terminal further includes: a starting module 33, configured to enable the interference detecting function;
  • the sending module 31 is specifically configured to report the interference source information to the serving base station for reporting the interference alarm information after the interference detecting function is enabled.
  • the activation module 33 is configured to: when the number of times the reward information is obtained is greater than a preset number of times, the interference detection function is enabled; wherein the reward information is sent to the device by the serving base station for performing cooperative spectrum sensing; Or the startup module 33 is specifically configured to: after the command to enable the interference detection function is received, enable the interference detection function; or the startup module 33 is specifically configured to learn that the current capability of the device can meet the preset capability. When required, turn on the interference detection function.
  • the cooperative sensing command received by the spectrum sensing module 32 carries an upper information type.
  • the sending module 31 is further configured to: when the reported information type is a hard bit, when the second interference signal receiving strength is detected When the second interference threshold is greater than the preset second interference threshold, the second interference signal receiving strength is sent to the serving base station for performing cooperative spectrum sensing; and the second interference signal receiving strength is sent by the serving base station for performing cooperative spectrum sensing.
  • the cooperative sensing management device is used, and the cooperative sensing management device uses the received second interference signal to receive the strength estimation interference influence range.
  • FIG. 6 is a schematic structural diagram of a collaboration awareness management device according to an embodiment of the present invention.
  • the device includes: a memory 60 and a processor 61.
  • the memory 60 includes: a first receiving command, a first determining command, a first selecting command, and a first spectrum sensing command.
  • the processor 61 is configured to communicate with the memory 60, and execute the first receiving instruction, the first determining instruction, the first selecting instruction, and the first spectrum sensing instruction, respectively, for executing the receiving module 11, the determining module 12, and the selecting module. 13 and the operations performed by the spectrum aware module 14.
  • the memory 60 further includes: a first reward management instruction and a first spectrum backoff management instruction.
  • the processor 61 is further in communication with the memory 60 to execute the first reward management command and the first spectrum backoff management command for performing operations performed by the reward management module 15 and the spectrum backoff management module 16, respectively.
  • FIG. 7 is a schematic structural diagram of a serving base station according to an embodiment of the present invention.
  • the device includes: a memory 70 and a processor 71.
  • the memory 70 includes: a second receiving instruction, a second determining instruction, a second sending instruction, and a second spectrum sensing instruction.
  • the processor 71 is in communication with the memory 70, and executes the second receiving instruction, the second determining instruction, the second sending instruction, and the second spectrum sensing instruction, respectively, for executing the receiving module 21, the determining module 22, and the sending module 23 And the operations performed by the spectrum aware module 24.
  • the memory 70 further includes: a second reward management instruction.
  • the processor 71 is further configured to execute the second reward management instruction for performing an operation performed by the reward management module 25.
  • FIG. 8 is a schematic structural diagram of an alarm terminal according to an embodiment of the present invention. As shown in FIG. 8, the device includes: a memory 80 and a processor 81.
  • the memory 80 includes: a third transmission instruction and a third spectrum sensing instruction.
  • the processor 81 is in communication with the memory 80, and executes the third transmission instruction and the third spectrum sensing instruction for performing operations performed by the transmitting module 31 and the spectrum sensing module 32, respectively.
  • the memory 80 further includes: a boot command.
  • the processor 81 is further connected to the memory 80 Communication is performed to execute the startup command for performing the operation of the startup module 33.
  • the modules of the device of the present invention may be integrated into one or may be deployed separately.
  • the above modules can be combined into one module, or can be further split into multiple sub-modules.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

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Abstract

本发明公开了一种协作频谱感知方法和设备。协作感知管理设备从用于上报干扰警报信息的服务基站接收干扰警报信息,所述干扰警报信息携带了干扰源来波方向和干扰源频点;所述协作感知管理设备利用所述干扰源来波方向和干扰源频点确定对应于同一个干扰源的干扰警报信息;所述协作感知管理设备利用对应于所述同一个干扰源的干扰警报信息为所述干扰源选择用于执行协作频谱感知的服务基站;所述协作感知管理设备向所述用于执行协作频谱感知的服务基站发送指示所述用于执行协作频谱感知的服务基站进行频谱感知的协作感知命令,从所述用于执行协作频谱感知的服务基站接收频谱感知结果,利用所述频谱感知结果确定协作频谱感知判决结果。

Description

协作频谱感知方法和设备 本申请要求于 2012 年 11 月 15 日提交中国专利局、 申请号为 201210460348.X, 发明名称为 "一种基于认知无线电系统的协作频谱感 知方法和设备" 的中国专利申请的优先权, 其全部内容通过引用结合在 本申请中。 技术领域
本发明涉及通信技术领域, 尤其是涉及了协作频谱感知方法和设 备。 背景技术
无线电通信频谱是宝贵的资源, 随着无线通信技术的飞快发展, 频 谱资源贫乏的问题日益严重。 当前通过对无线通信频谱进行监测和研 究, 发现某些频段(如电视频段)在大多数时间内并未被使用或者在大 多数地域内并未被使用。 此外, 还出现了多系统多用户同时竟争某频段 的情况。 目前, 存在频谱资源使用不均衡的现象。 如果多个系统具备使 用该频段的资格和 /或能力, 则将该频段称为共享频段, 将使用该共享频 段的系统称为共享频段系统。 CR ( Cognitive Radio, 认知无线电) 系统 是共享频段系统的一种。 CR 系统的基本思想是: 在不对授权系统造成 干扰的前提下, CR 系统可以通过监测当前无线环境的变化来动态机会 式地接入空白频段进行通信。
CR 的应用场景主要分为两大类: 第一类为机会式使用授权系统的 频谱; 第二类为多个 CR系统机会式使用某个频段, 该频段不隶属于任 何一个系统。 该多个 CR系统公平地使用某个频段, 即当某个频段空闲 时, 该多个 CR系统使用该频段或按照一定优先级使用 (非公平式)该 频短。 当多个 CR按照一定优先级使用该频段时, 当这多个 CR中, 某 个优先级高于其他 CR系统的优先级的 CR系统使用该频段时,其他 CR 系统(即优先级低于该 CR系统的 CR系统)停止使用该频段。
对于第一类应用场景和第二类应用场景, 要求保障授权系统或者高 优先级系统的业务性能。 基于此要求: (1 ) CR 系统能够准确判断出哪 些频段是可用的空白频段(即, 如果某个 CR系统使用这些频段上, 不 会影响授权系统或者拥有更高优先级的 CR系统的正常工作); ( 2 )当正 在使用的频段不再可用时, CR 系统需要及时地停止使用将这些频段, 以让授权系统或者优先级更高的 CR系统使用这些频段。
为了实现上述要求, 如何确定空白频谱是 CR系统工作的前提, 且 频谱感知是确定空白频谱的重要手段。 频谱感知是指通过检测授权系统 或优先级更高的系统在目标频谱上的信号来判断该授权系统或者优先 级更高的系统是否占用了该目标频谱, 即判断目标频谱是处于占用状态 还是空闲状态。 由于阴影效应、多径衰落等特性导致的隐藏终端的问题, 采用单点感知空白频谱的 CR系统可能会干扰授权用户的通信。 为了解 决该问题, 在 CR系统中, 采用协作感知来提高频谱的感知性能。 习作 感知的基本原理是: 利用位于多个不同地理位置的协作感知节点感知空 白频谱, 得到感知结果, 提高感知性能。
具体地,当前协作频谱感知的实现流程包括:配置多个感知节点(基 站或终端)用于感知某个目标频谱, 使用这多个感知节点感知该目标频 谱, 并将频谱感知结果上报给协作感知管理设备(即融合中心), 并由 该协作感知管理设备按照一定的融合规则处理该多个感知节点上报的 频谱感知结果, 以得到最终的协作频谱感知判决结果。
如何选择用于感知目标频谱的感知节点是保证协作感知性能的重 要前提, 现有技术并没有给出如何选择用于感知目标频谱的感知节点的 技术方案。 发明内容
本发明实施例提供一种协作频谱感知方法和设备, 以选择合适的感 知节点, 提高协作感知的检测性能。
为了达到上述目的, 本发明实施例提供一种协作频谱感知方法, 包 括:
协作感知管理设备从用于上报干扰警报信息的服务基站接收干扰 警报信息, 所述干扰警报信息携带了干扰源来波方向和干扰源频点; 所述协作感知管理设备利用所述干扰源来波方向和干扰源频点确 定对应于同一个干扰源的干扰警报信息;
所述协作感知管理设备利用对应于所述同一个干扰源的干扰警报 信息为所述干扰源选择用于执行协作频谱感知的服务基站;
所述协作感知管理设备向所述用于执行协作频谱感知的服务基站 发送指示所述用于执行协作频谱感知的服务基站进行频谱感知的协作 感知命令, 从所述用于执行协作频谱感知的服务基站接收频谱感知结 果, 利用所述频谱感知结果确定协作频谱感知判决结果。
本发明实施例提供一种协作频谱感知方法, 包括:
服务基站接收来自多个用于上报干扰源信息的报警终端的干扰源 信息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 并利用所述 干扰源来波方向和干扰源频点确定对应于同一个干扰源的干扰源来波 方向和干尤源频点;
所述服务基站向协作感知管理设备上报干扰警报信息, 所述干扰警 报信息中携带了所述干扰源对应的干扰源来波方向和干扰源频点; 由所 述协作感知管理设备利用所述干扰源来波方向和干扰源频点确定对应 于所述同一干扰源的干扰警报信息, 利用对应于所述同一干扰源的干扰 警报信息为所述干扰源选择用于执行协作频谱感知的服务基站;
所述服务基站在收到来自所述协作感知管理设备的指示进行频谱 感知的协作感知命令后, 将协作感知命令发送给用于感知频谱的报警终 端, 并接收所述用于感知频谱的报警终端上报的频谱感知结果, 将收到 的频谱感知结果发送给所述协作感知管理设备; 由所述协作感知管理设 备利用收到的所述频谱感知结果确定协作频谱感知判决结果。
本发明实施例提供一种协作频谱感知方法, 包括:
报警终端向用于上报干扰警报信息的服务基站上报干扰源信息, 所 述干扰源信息包括干扰源来波方向和干扰源频点; 由所述用于上报干扰 警报信息的服务基站将干扰源信息上报给协作感知管理设备, 并由协作 感知管理设备利用所述各用于上报干扰警报信息的服务基站上报的信 息选择用于执行协作频谱感知的服务基站;
所述报警终端在收到来自所述用于执行协作频谱感知的服务基站 的指示进行频谱感知的协作感知命令后, 进行频谱感知过程, 并将频谱 感知结果发送给所述用于执行协作频谱感知的服务基站; 由所述用于执 行协作频谱感知的服务基站将收到的频谱感知结果发送给所述协作感 知管理设备, 并由所述协作感知管理设备利用收到的频谱感知结果确定 协作频谱感知判决结果。
本发明实施例提供一种协作感知管理设备, 包括:
接收模块, 用于接收来自用于上报干扰警报信息的服务基站的干扰 警报信息, 所述干扰警报信息中携带了干扰源来波方向和干扰源频点; 确定模块, 用于利用所述干扰源来波方向和干扰源频点确定对应于 同一个干扰源的干扰警报信息; 选择模块, 用于利用对应于所述同一个干扰源的干扰警报信息为所 述干扰源选择用于执行协作频谱感知的服务基站;
频谱感知模块, 用于向所述用于执行协作频谱感知的服务基站发送 指示所述用于执行协作频谱感知的服务基站进行频谱感知的协作感知 命令, 并接收所述各用于执行协作频谱感知的服务基站上报的频谱感知 结果, 利用所述频谱感知结果确定协作频谱感知判决结果。
本发明实施例提供一种服务基站, 包括:
接收模块, 用于接收来自多个用于上报干扰源信息的报警终端的干 扰源信息, 所述干扰源信息包括干扰源来波方向和干扰源频点;
确定模块, 用于利用所述干扰源来波方向和干扰源频点确定对应于 同一个干扰源的干扰源来波方向和干扰源频点;
发送模块, 用于向协作感知管理设备上报干扰警报信息, 所述干扰 警报信息中携带了所述干扰源对应的干扰源来波方向和干扰源频点; 由 所述协作感知管理设备利用所述干扰源来波方向和干扰源频点确定对 应于同一干扰源的干扰警报信息, 利用对应于所述同一干扰源的干扰警 报信息为所述干扰源选择用于执行协作频谱感知的服务基站;
频谱感知模块, 用于在收到来自所述协作感知管理设备的用于指示 进行频谱感知的协作感知命令后, 将协作感知命令发送给用于感知频谱 的报警终端, 并接收所述用于感知频谱的报警终端上报的频谱感知结 果, 将收到的频谱感知结果发送给所述协作感知管理设备; 由协作感知 管理设备利用收到的所述频谱感知结果确定协作频谱感知判决结果。
本发明实施例提供一种报警终端, 包括:
发送模块, 用于向用于上报干扰警报信息的服务基站上报干扰源信 息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 由所述用于上 报干扰警报信息的服务基站将干扰源信息上报给协作感知管理设备, 并 由协作感知管理设备利用所述各用于上报干扰警报信息的服务基站上 报的信息选择用于执行协作频谱感知的服务基站;
频谱感知模块, 用于在收到来自所述用于执行协作频谱感知的服务 基站的指示进行频谱感知的协作感知命令后, 进行频谱感知过程, 并将 频谱感知结果发送给所述用于执行协作频谱感知的服务基站; 由所述用 于执行协作频谱感知的服务基站将收到的频谱感知结果发送给所述协 作感知管理设备, 并由所述协作感知管理设备利用收到的频谱感知结果 确定协作频谱感知判决结果。
与现有技术相比, 本发明实施例至少具有以下优点: 本发明实施例 中, 协作感知管理设备通过接收各用于上报干扰警报信息的服务基站的 干扰警报信息, 并利用同一个干扰源的干扰警报信息为该干扰源选择用 于执行协作频谱感知的服务基站, 可以选择最为合适的用于执行协作频 谱感知的感知节点, 从而保证协作感知的检测性能。 服务基站可以将协 作感知命令下发给多个用于感知频谱的报警终端, 从而可以减轻服务基 站的负担。 附图说明
为了更清楚地说明本发明的技术方案, 下面将对实施例描述中所需 要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳 动的前提下, 还可以根据这些附图获得其他的附图。
图 la是本发明实施例提供的一种协作频谱感知方法的流程示意图; 图 lb是本发明实施例提供的另外一种协作频谱感知方法的流程示 意图;
图 lc是本发明实施例提供的另外一种协作频谱感知方法的流程示 意图;
图 1 是本发明实施例提供的另外一种协作频谱感知方法流程示意 图;
图 2是本发明实施例提供的一种协作频谱感知方法流程示意图; 图 3是本发明实施例提供的一种协作感知管理设备的结构示意图; 图 4是本发明实施例提供的一种服务基站的结构示意图;
图 5是本发明实施例提供的一种报警终端的结构示意图;
图 6为本发明实施例的一种协作感知管理设备的结构示意图; 图 7为本发明实施例的一种服务基站的结构示意图;
图 8为本发明实施例的一种报警终端的结构示意图。 具体实施方式 下面将结合本发明中的附图, 对本发明中的技术方案进行清楚、 完 整地描述, 显然, 所描述的实施例仅仅是本发明的一部分实施例, 而不 是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有 做出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的 范围。
实施例一
本发明实施例提供一种协作频谱感知方法, 该方法可以应用于采用 认知无线电技术系统。 这些系统包括: LTE ( Long Term Evolution, 长期 演进) 系统、 TD-SCDMA ( Time Division-Synchronous Code Division Multiple Access ,时分同步码分多址)系统、 GSM( Global System of Mobile communication,全球移动通讯 )系统、 WCDMA ( Wideband Code Division Multiple Access , 宽带码分多址) 系统、 CDMA-2000 ( Code Division Multiple Access-2000,宽带码分多址 2000 )系统与 WLAN( Wireless Local Area Networks, 无线局域网)等移动通信系统。
参见图 la, 图 la是本发明实施例提供的一种协作频谱感知方法的 流程示意图。
步骤 101a,协作感知管理设备从用于上报干扰警报信息的服务基站 接收干扰警报信息, 所述干扰警报信息携带了干扰源来波方向和干扰源 频点。
步骤 102a,所述协作感知管理设备利用所述干扰源来波方向和干扰 源频点确定对应于同一个干扰源的干扰警报信息。
步骤 103a,所述协作感知管理设备利用对应于所述同一个干扰源的 干扰警报信息为所述干扰源选择用于执行协作频谱感知的服务基站。
步骤 104a,所述协作感知管理设备向所述用于执行协作频谱感知的 服务基站发送指示所述用于执行协作频谱感知的服务基站进行频谱感 知的协作感知命令, 从所述用于执行协作频谱感知的服务基站接收频谱 感知结果, 利用所述频谱感知结果确定协作频谱感知判决结果。
参见图 lb, 图 lb是本发明实施例提供的一种协作频谱感知方法的 流程示意图。
步骤 101b,服务基站接收来自多个用于上报干扰源信息的报警终端 的干扰源信息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 并 利用所述干扰源来波方向和干扰源频点确定对应于同一个干扰源的干 扰源来波方向和干扰源频点。
步骤 102b, 所述服务基站向协作感知管理设备上报干扰警报信息, 所述干扰警报信息中携带了所述干扰源对应的干扰源来波方向和干扰 源频点; 由所述协作感知管理设备利用所述干扰源来波方向和干扰源频 点确定对应于同一干扰源的干扰警报信息, 利用对应于所述同一干扰源 的干扰警报信息为所述干扰源选择用于执行协作频谱感知的服务基站。 步骤 103b,所述服务基站在收到来自所述协作感知管理设备的指示 进行频谱感知的协作感知命令后, 将协作感知命令发送给用于感知频谱 的报警终端, 并接收所述用于感知频谱的报警终端上报的频谱感知结 果, 将收到的频谱感知结果发送给所述协作感知管理设备; 由所述协作 感知管理设备利用收到的所述频谱感知结果确定协作频谱感知判决结 果。
参见图 lc, 图 lc是本发明实施例提供的一种协作频谱感知方法的 流程示意图。
步骤 101c,报警终端向用于上报干扰警报信息的服务基站上报干扰 源信息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 由所述用 于上报干扰警报信息的服务基站将干扰源信息上报给协作感知管理设 备, 并由协作感知管理设备利用所述各用于上报干扰警报信息的服务基 站上报的信息选择用于执行协作频谱感知的服务基站。
步骤 102c,所述报警终端在收到来自所述用于执行协作频谱感知的 服务基站的指示进行频谱感知的协作感知命令后, 进行频谱感知过程, 述用于执行协作频谱感知的服务基站将收到的频谱感知结果发送给所 述协作感知管理设备, 并由所述协作感知管理设备利用收到的频谱感知 结果确定协作频谱感知判决结果。
如图 1所示, 图 1是本发明实施例提供的另外一种协作频谱感知方 法流程示意图。 该方法包括以下步骤:
步骤 101 , 报警终端 ( UE_alarming ) 向服务基站 ( BS_Serving )上 报干扰源信息。
本步骤中的报警终端为用于上报干扰源信息的报警终端。
该报警终端为正常通信的终端或只执行感知检测的设备。 该服务基 站为报警终端驻留或为报警终端提供服务的基站设备。
本发明实施例的一种优选实施方式中, 该报警终端可以基于自身策 略决定开启或关闭干扰检测功能; 且报警终端在开启干扰检测功能之 后, 向服务基站上报干扰源信息。
本发明实施例中, 报警终端开启干扰检测功能的过程, 进一步包括 但不限于如下方式:
方式一、 报警终端在获得奖励信息的次数大于预设次数门限(可以 根据实际经验值设置, 如 3次) 时, 则开启干扰检测功能。 具体的, 如 果报警终端由于上报干扰源信息而获得过奖励信息(可为服务基站通知 给 警终端的), 具体获得过程将在后续步骤中阐述, 且收到奖励信息 的次数大于预设次数门限, 则报警终端自动激发开启干扰检测功能。
方式二、 报警终端在收到开启干扰检测功能的命令之后, 开启干扰 检测功能。 具体的, 当用户 (由于某些奖励原因) 决定开启干扰检测功 能, 并向报警终端下发开启干扰检测功能的命令时, 该报警终端在收到 开启干扰检测功能的命令之后, 开启干扰检测功能。
方式三、 报警终端在获知本设备的当前能力能够满足预设能力要求 时, 开启干扰检测功能。 具体的, 当报警终端的当前能力较强 (如支持 较大带宽、 感知检测算法灵敏度高, 电池容量高等) 时, 报警终端在空 闲时可自愿开启干扰检测功能; 当报警终端的当前能力较差(如支持较 小带宽、 感知检测算法灵敏度低, 电池容量低等) 时, 报警终端关闭干 扰检测功能。
本发明实施例中, 报警终端向服务基站上报干扰源信息的过程, 进 一步包括但不限于如下方式:
方式一、 通过事件触发的方式进行上报; 具体的, 报警终端在发现 某频段上出现干扰(即检测到干扰源) 时, 在可用资源上向服务基站上 报干扰源信息; 其中, 如果报警终端处于通信状态, 则当前具有可用资 源, 可以直接使用可用资源上报干扰源信息; 如果报警终端未处于通信 状态, 则当前不具有可用资源, 需要申请可用资源, 并通过申请的可用 资源上报干扰源信息。
方式二、 通过事先规定的上报周期进行周期性上报; 其中, 上报周 期及承载上报信息的资源由服务基站设定; 且服务基站可以为覆盖范围 内的所有报警终端设定相同的上报周期及承载上报信息的资源, 并通过 公共信令下发给各报警终端; 或者, 服务基站可以为每个报警终端单独 设定上报周期及承载上报信息的资源, 并通过专用信令下发给该报警终 端。
进一步的, 一种优选的确定周期上^艮位置的方式可以为: 当无线帧 及无线子帧位置满足( SFN+subframe ) mod ( N ) ^offset 时, 则报警终 端向服务基站上报干扰源信息; 其中, SFN和 subframe分别为无线帧及 无线子帧编号, offset为偏置信息, N为上报周期, 且 N和 offset由服 务基站发送给报警终端; 基于上述公式, 终端可以在满足上述公式的位 置上报干扰源信息。
本发明实施例中, 干扰源信息至少包括干扰源来波方向 (如相对于 报警终端正南方向偏移角度, 不能确定置为 NULL )和干扰源频点; 此 外, 该干扰源信息还可以包括干扰信号接收强度(为了后续区分方便, 该干扰信号接收强度为第一干扰信号接收强度)和干扰信号类型 (由报 警终端使用的感知检测算法决定,若可以检测,说明信号类型,如 DTMB 信号, 不能检测出, 置为 NULL ); 且报警终端上报的信息还可包括报警 终端的地理位置信息和报警终端的身份信息; 报警终端上报的信息可以 如表 1所示, 其中包括干扰源信息、 报警终端的地理位置信息、 报警终 端的身份信息。 表 1
Figure imgf000014_0001
步骤 102, 服务基站接收来自多个报警终端的干扰源信息 (每个报 警终端上报的信息可以如表 1 所示), 并利用干扰源来波方向和干扰源 频点确定对应于同一个干尤源的干尤源来波方向和干尤源频点; 并向协 作感知管理设备(BS_cooperation )上报干扰警报信息; 其中, 该干扰警 报信息中至少携带了该干扰源对应的干扰源来波方向和干扰源频点。
在本步骤中, 用于上报干扰警报信息的服务基站接收来自多个用于 上报干扰源信息的报警终端的干扰源信息。
本发明实施例中, 报警终端上报的干扰源信息中还携带了干扰信号 接收强度, 服务基站还需要利用干扰源来波方向和干扰源频点确定对应 于同一个干扰源的干扰信号接收强度, 并选择最大的干扰信号接收强度 作为该干扰源的干扰信号接收强度; 进一步的, 服务基站还需要在该干 扰警报信息中携带该干扰源对应的最大的干扰信号接收强度。
具体的, 服务基站会收到多个报警终端上报的干扰源信息, 且收到 的多个干扰源信息可能是针对同一个干扰源的, 服务基站需要保证上报 给协作感知管理设备的干扰源信息的唯一性; 为此, 服务基站需要确定 对应于同一个干扰源的干扰源信息, 即确定干扰源频点相同, 且干扰源 来波方向基本一致的干扰源为同一个干扰源; 服务基站需要将该干扰源 的干扰源信息添加到干扰警报信息中, 该干扰源的干扰源信息包括但不 限于干扰源来波方向和干扰源频点; 此外, 干扰源信息还可以包括干扰 信号接收强度, 且干扰信号接收强度为对应于该干扰源的最大干扰信号 接收强度。
本发明实施例的优选实施方式中, 针对每个干扰源, 如果该干扰源 的干扰信号接收强度大于预设第三干扰门限(可以根据实际经验值进行 选择), 则需要将该干扰源的干扰源信息 (干扰源来波方向、 干扰源频 点和干扰信号接收强度)添加到干扰警报信息, 否则, 不需要将该干扰 源的干扰源信息添加到干扰警报信息; 此外, 该干扰警报信息中还可以 携带服务基站的地理位置。
进一步的, 服务基站向协作感知管理设备上报的干扰警报信息可以 如表 2所示, 干扰源的干扰源信息在干扰源来波方向 (如相对于报警终 端正南方向偏移角度, 不能确定置为 NULL )、干扰源频点和干扰信号接 收强度的基础上, 还可以包括干扰信号类型; 且该干扰警报信息中还可 以包括服务基站的地理位置以及服务基站的身份信息(用于表征该干扰 警 信息来自哪个系统, 用于后续确定奖励归属)。 如果协作感知管理设备独立于任何系统, 且协作感知管理设备可以 组织多个系统的多个感知节点完成协作感知, 则服务基站的身份信息为 服务基站的系统 ID和小区 ID; 如果协作感知管理设备与服务基站属于 不同的系统, 则服务基站的身份信息为服务基站的系统 ID和小区 ID; 如果协作感知管理设备与服务基站属于相同的系统, 则服务基站的身份 信息为服务基站的小区 ID。
表 2
Figure imgf000016_0001
步骤 103, 协作感知管理设备接收来自多个服务基站的干扰警报信 息(至少携带干扰源来波方向和干扰源频点; 且还可以优选携带干扰信 号接收强度和服务基站的地理位置, 且每个服务基站上报的信息可以如 表 2所示), 并利用干扰源来波方向和干扰源频点确定对应于同一个干 扰源的干扰警报信息。
在本步骤中, 协作感知管理设备接收来自多个用于上报干扰警报信 息的服务基站的干扰警报信息。
具体的, 协作感知管理设备会收到多个服务基站上报的干扰警报信 息, 且收到的多个干扰警报信息可能是针对同一个干扰源的; 为此, 协 作感知管理设备需要确定对应于同一个干扰源的干扰警报信息, 即协作 感知管理设备确定干扰源频点相同, 且干扰源来波方向基本一致的干扰 源为同一个干扰源; 之后, 协作感知管理设备可以确定该干扰源对应的 干扰警报信息(即该干扰源对应的干扰信号接收强度和服务基站的地理 位置)。
步骤 104,协作感知管理设备利用同一个干扰源的干扰警报信息(干 扰信号接收强度和服务基站的地理位置)为该干扰源选择用于执行协作 频谱感知的服务基站; 其中, 协作感知管理设备需要针对每个干扰源选 择用于执行协作频谱感知的服务基站, 本实施例中以一个干扰源的处理 为例进行后续说明。
本发明实施例中, 协作感知管理设备利用同一个干扰源的干扰警报 信息为该干扰源选择用于执行协作频谱感知的服务基站, 包括但不限 于:
当有多个用于上报所述干扰警报信息的服务基站上报对应于该干 扰源(如使用频点 X的干扰源)的干扰警报信息时, 则协作感知管理设 备确定上报的干扰信号接收强度大于预设第一干扰门限 P (可以根据实 际经验进行选择) 的用于上报所述干扰警报信息的服务基站, 并从确定 的服务基站中选择指定第一数量 N1个(可以根据实际经验进行选择) 的服务基站(可以从干扰信号接收强度从大到小的顺序选择服务基站) 为该干扰源对应的用于执行协作频谱感知的服务基站, 从而保证各选择 的服务基站接收到的干扰信号接收强度能够满足协作感知性能要求。
当有一个用于上报所述干扰警报信息的服务基站(如服务基站 1 ) 上报对应于该干扰源(如使用频点 X的干扰源 )的干扰警报信息时, 则 协作感知管理设备利用各服务基站的地理位置获得服务基站 1与其它服 务基站之间的距离, 并从距离大于预设距离门限 d (可以根据实际经验 进行选择, 如 d=10*波长) 的其它服务基站中选择指定第二数量 N2个 (可以根据实际经验进行选择) 的服务基站, 且选择的指定第二数量 Num的服务基站和该服务基站 1为该干扰源对应的用于执行协作频谱感 知的服务基站, 从而保证选择的各个服务基站彼此之间接收到的信号并 不相关, 继而使得协作感知的结果更加准确。
步骤 105, 协作感知管理设备向服务基站发送协作感知命令(用于 指示进行频谱感知 ), 由服务基站将协作感知命令发送给报警终端。
在本步骤中, 协作感知管理设备向用于执行协作频谱感知的服务基 站发送协作感知命令(用于指示进行频谱感知), 由该用于执行协作频 谱感知的服务基站将协作感知命令发送给用于感知频谱的报警终端。
如表 3所示,为一种优选的协作感知命令所包含的信息内容;其中, 上报信息类型可以分为软比特和硬比特, 硬比特为直接表征该信道是否 被占用, 软比特为直接测量到的干扰信号接收强度信息。
表 3
标感知信 感知参数 感知上报格式 道
目 标虚 检测时 检 测 检 测 上报信息类型 上报 警概率 间 周期 算法 时间 步骤 106, 报警终端在收到协作感知命令之后进行频谱感知过程, 并将频谱感知结果发送给服务基站; 服务基站将收到的频谱感知结果发 送给协作感知管理设备; 协作感知管理设备接收各服务基站上报的频谱 感知结果, 并利用收到的频谱感知结果确定协作频谱感知判决结果。
在本步骤中, 用于感知频谱的报警终端在收到协作感知命令之后进 行频谱感知过程, 并将频谱感知结果发送给用于执行协作频谱感知的服 务基站; 用于执行协作频谱感知的服务基站将收到的频谱感知结果发送 给协作感知管理设备; 协作感知管理设备接收各用于执行协作频谱感知 的服务基站上报的频谱感知结果, 并利用收到的频谱感知结果确定协作 频谱感知判决结果。
此外, 用于执行协作频谱感知的服务基站在收到协作感知命令之后 也可以进行频谱感知过程, 并将频谱感知结果直接发送给协作感知管理 设备。
具体的, 协作感知管理设备在收到各用于执行协作频谱感知的服务 基站上报的频谱感知结果之后, 可以利用收到的频谱感知结果进行融合 判决, 以最终确定协作频谱感知判决结果, 即判断出授权系统是否在目 标频点出现; 其中, 融合判决过程可分为硬判决和软判决: 在硬判决中, 频谱感知结果为 1或 2比特的本地硬判决结果(即信道占用或空闲 ), 协作感知管理设备基于多个本地硬判决结果进行融合, 且常用硬判决融 合准则包括与 (and )、 或(or )和投票(voting )等; 在软判决中, 频谱 感知结果为多比特的本地软判决结果, 可为量化的检测信息(如能量等 检测统计量 ), 协作感知管理设备基于多个本地软判决结果进行融合, 且常用的软判决融合准则包括线性协作、 似然比等, 且常用的线性协作 感知的融合准则包括最大比合并、 等增益合并、 选择式合并等方式。 本发明实施例中, 当上报信息类型为硬比特时, 如果报警终端检测 到干扰信号接收强度(为区分方便, 该过程中的干扰信号接收强度为第 二干扰信号接收强度) 大于预设第二干扰门限(可根据实际经验进行选 择), 则该报警终端还需要将第二干扰信号接收强度(可与频谱感知结 果一起)发送给服务基站, 由该服务基站将该第二干扰信号接收强度发 送给协作感知管理设备。
协作感知管理设备接收各用于执行协作频谱感知的服务基站(即步 骤 104中选择的各服务基站)上报的第二干扰信号接收强度, 并从各服 务基站上报的第二干扰信号接收强度中选择最大的第二干扰信号接收 强度, 记录上报该最大的第二干扰信号接收强度的服务基站的地理位置 (精度 X, 纬度 Y ); 之后, 协作感知管理设备可以利用该最大的第二干 扰信号接收强度和地理位置(精度 X, 纬度 Y )估计干扰影响范围, 并 通知干扰影响范围内的服务基站执行频谱退让操作。
进一步的, 协作感知管理设备利用最大的第二干扰信号接收强度和 地理位置 (精度 X, 纬度 Y )估计干扰影响范围, 包括但不限于如下方 式: 协作感知管理设备利用最大的第二干扰信号接收强度与受扰系统能 够容忍干扰的最大值确定路损(如最大的第二干扰信号接收强度-受扰系 统能够容忍干扰的最大值 =路损 ), 并选择该干扰源对应频点适用的传播 模型, 确定路损对应的传播距离 D, 并将与地理位置(精度 X, 精度 Y ) 之间的距离在传播距离 D内的区域设置为干扰影响范围, 即与地理位置 (精度 X, 精度 Y )距离为 D范围内的使用该干扰源对应频点的服务基 站均被影响, 协作感知管理设备需要通知上述影响的服务基站在该干扰 源对应频点上采取频谱退让操作。
综上所述,本发明实施例中,通过接收各服务基站的干扰警报信息, 并利用同一个干扰源的干扰警报信息为该干扰源选择用于执行协作频 谱感知的服务基站, 可以选择最为合适的用于执行协作频谱感知的感知 节点, 从而保证协作感知的检测性能; 进一步的, 通过奖励机制还可以 激发报警终端自发辅助服务基站进行感知检测, 使服务基站可以将频谱 感知任务下发给多个报警终端, 从而减轻服务基站的负担, 并使感知检 测更有针对性。 为此, 本发明实施例提供的方法中还可以包括:
在确定协作频谱感知判决结果之后, 协作感知管理设备还可以利用 协作频谱感知判决结果确定各用于执行协作频谱感知的服务基站上报 频谱感知结果的准确程度信息, 并利用确定结果为相应的用于执行协作 频谱感知的服务基站申请奖励信息; 和 /或, 协作感知管理设备确定各用 于执行协作频谱感知的服务基站上报干扰警报信息的时间信息, 并利用 确定结果为相应的用于执行协作频谱感知的服务基站申请奖励信息。
具体的, 如果用于执行协作频谱感知的服务基站上报的频谱感知结 果与协作频谱感知判决结果相同, 则协作感知管理设备到核心网为该服 务基站申请奖励信息, 在申请过程中可包括该服务基站的小区 ID (或系 统 ID+小区 ID ); 如果用于执行协作频谱感知的服务基站上报的频谱感 知结果与协作频谱感知判决结果不同, 则协作感知管理设备不需要到核 心网为该服务基站申请奖励信息。 和 /或, 协作感知管理设备确定各服务 基站上报干扰警报信息的时间信息, 并确定上报干扰警报信息时间靠前 的一个或多个用于执行协作频谱感知的服务基站, 到核心网为时间靠前 的一个或多个服务基站申请奖励信息, 在申请过程中可以包括该服务基 站的小区 ID (或系统 ID+小区 ID )。
进一步的, 协作感知管理设备可以将申请到的奖励信息通知给对应 的用于执行协作频谱感知的服务基站; 用于执行协作频谱感知的服务基 站在收到来自协作感知管理设备的奖励信息之后, 可以将该奖励信息通 知给对应的报警终端 (即干扰警报信息所对应的报警终端)。
本发明实施例中, 协作感知管理设备还可以利用各用于执行协作频 谱感知的服务基站上报干扰警报信息的时间信息对奖励等级进行量化 处理, 将奖励信息划分为若干奖励等级(如第一个上报干扰警报信息的 服务基站为第一奖励等级, 第二个上报干扰警报信息的服务基站为第二 奖励等级, 以此类推), 并使用数字表征奖励等级; 在申请奖励信息的 过程中, 需要包含上述的以数字表征的奖励等级, 且申请到的奖励信息 需要对应该奖励等级; 对于最终发送给报警终端的奖励信息, 其奖励等 级越高, 则报警终端越容易开启干扰检测功能。
实施例二
以下结合具体的应用场景对本发明实施例提供的技术方案进行进 一步的说明。 本发明实施例中, 如表 4所示, 假设当前存在四个基站, 分另' J为 BS1 , BS2, BS3, BS4; BS2、 BS3和 BS4属于系统 2, BS1属 于系统 1; BS1覆盖范围内有三个终端, 分别为 BS1JJE1 (表征为基站 BS1下的 UE1 ), BS1_UE2, BS1_UE3; BS2覆盖范围内有两个终端, 分别为 BS2JJE4和 BS2JJE5; BS1 , BS2, BS3, BS4占用的频点分别 为 fl , f2, f3, f3。
表 4
系统 1 系统 2
基站 BS1 BS2 BS3 BS4
A÷自 地理位置 地理位置 地理位置 地理位 占、 信息 (经 占 信息 (经 占 信息 (经 占 置 息 fl 度 XI , 纬 f2 度 X2, 纬 f3 度 X3 , 纬 f3 ( 经度 度 Y1 ) 度 Y2 ) 度 Y3 ) X4,纬度 Y4 ) 驻留 地理位置 地理位置
终端 SI 信息 (X_ S2 信息 ( X_
_u
信息 BS1—UE1 _U BS2—UE4
El E4
·> ·>
Y—BSl—U Y—BS2—U
El ) E4 )
地理位置 地理位置
SI 信息 (x_ S2 信息 ( X—
_U _U
BS1—UE2 BS2—UE5
E2 E5
·> ·>
Y—BSl—U Y—BS2—U
E2 ) E5 )
地理位置
SI 信息 (X_
_U
BS1—UE3
E3
·>
Y—BSl—U
E3 )
基于上述应用场景, 如图 2所示, 本发明实施例提供的协作频谱感 知方法中, 还可以包括以下步骤:
步骤 201、 报警终端向服务基站上报干扰源信息。
BS1_UE1和 BS1JJE2开启干扰检测功能,并检测到频点 f3上存在 干扰信息, 向其驻留的 BS1上报干扰源信息, 上报信息如表 5和表 6所 其中, BSIJJEI曾收到过奖励信息(如话费奖励或其他服务奖励); 或者, BSIJJEI 获悉开启干扰检测功能时可以获取一定奖励, 且 BSIJJEI能力支持自身开启干扰检测功能, 该 BSIJJEI的机主自主开 启干扰检测功能; BS1_UE2曾收到的奖励信息次数超过开启干扰检测功 能所需要的次数门限要求, 且 BS1JJE2能力支持, 该 BS1JJE2自动开 启干扰检测功能。
进一步的, BSIJJEI和 BS1JJE2可以在检测到干扰之后, 在可用 的资源上上报干扰源信息;或者, BSIJJEI和 BS1JJE2还可以按照 BS1 规定的上报周期上报干扰源信息, 且 BSIJJEI和 BS1JJE2可以按照相 同的上报周期进行上报, 也可以按照各自的不同的上报周期进行上报。
假设 BSIJJEI 的上报周期为 Nl , BS1_UE2 的上报周期为 N2, BSIJJEI和 BS1JJE2对应的偏置分别为 offsetl及 offset2,则 BSIJJEI 和 BS1JJE2将按照公式( SFN+subframe ) mod ( N ) =offset计算恰当的 上才艮时刻; N1可以等于或不等于 N2, offsetl可以等于或不等于 offset2; 当 N1等于 N2, 且 offsetl等于 offset2时, 通过公共信道发送, 否则通 过专用信道发送。
表 5
Figure imgf000024_0001
表 6 干扰源 1 干扰源来波方向 NULL
干扰信号接收强度 P_f3_UE2 干扰源频点 f3
干扰信号类型 NULL
BS1_UE2地理位置 ( X_ BS1—UE2 ,
Y—BS1—UE2 )
BS1_UE2身份信息 BS1—UE2
步骤 202、 BS1搜集并整理来自 BS1JJE1和 BS1JJE2的干扰源信 息, 并将干扰源信息添加到干扰警报信息中, 将该干扰警报信息上报给 协作感知管理设备; 由于 BS1JJE1和 BS1JJE2上报的干扰源为同一个 干扰源, 通过比较干扰源信息中的干扰信号接收强度获知 P_f3_UEl> P_f3_UE2, 因此在将干扰源信息添加到干扰警报信息时, 干扰源对应的 干扰信号接收强度为 P_f3_UEl; 如表 7所示, 为 BS1上报给协作感知 管理设备的干扰警报信息。
表 7
Figure imgf000025_0001
步骤 203、 协作感知管理设备根据 BS1上报的干扰警报信息确定用 于执行协作频谱感知的服务基站; 本实施例中, 由于干扰源只有一个干 扰警报信息 (即只有 BS1上报对应于该干扰源的干扰警报信息), 因此 选取与 BSl距离大于 d的基站为用于执行协作频谱感知的服务基站,假 设满足该距离要求的基站为 BS2, 则用于执行协作频谱感知的服务基站 为 BS1和 BS2。
步骤 204、 协作感知管理设备向 BS1和 BS2下发协作感知命令, 并 要求上报信息类型为硬比特, 上报时间为 T; BS2通知下属的 BS2JJE4 和 BS2JJE5 测量频点 f3, BSl 通知下属的 BS1_UE1、 BS1_UE2 和 BS1_UE3测量频点 f3。
步骤 205、 BS1_UE1、 BS1JJE2和 BS1JJE3测量到的干扰信号接 收强度分别为 P_f3_UEl' , P_f3_UE2' 和 P_f3_UE3' , 硬判决结果分别 为 1 , 1 , 1 ( 1表征频点被占用), 且 P_f3_UEl, 高于预设检测门限, BS1_UE1还需要上报该干扰信号接收强度值 P_f3_UEl'; BS2_UE4和 BS2_UE5测量到的干扰信号接收强度分别为 P_f3_UE4和 P_f3_UE5, BS2JJE4判决频点被占用 (即硬判决结果为 1 ), BS2JJE5判决频点未 被干扰系统占用 (即硬判决结果为 0 ); BS1和 BS2在收到上述信息后, 需要将上述信息转发给协作感知管理设备。
进一步的,协作感知管理设备进行融合判决;如果采用 voting准则, 当超过 50%的上报节点的频谱感知结果为占用时, 协作感知管理设备确 定协作频谱感知判决结果为占用; 上述应用场景下, 共有五个节点上才艮 频谱感知结果, 且四个节点 (超过 5*50% )的频谱感知结果为占用, 因 此协作感知管理设备确定频点 f3的协作频谱感知判决结果为占用,且上 报最强接收信号强度的节点隶属的服务基站为 BSl ( XI , Y1 ), 该强度 信息为 P_f3_UEl' 。
步骤 206、 协作感知管理设备根据协作频谱感知判决结果和最强的 干扰信号接收强度估计干扰影响范围, 并通知影响范围内的基站执行频 谱退让操作。 具体的, 干扰影响范围的计算方法为: P_f3_UEl, -受扰系统能够 容忍干扰的最大值 =路损, 选择该频点适用的传播模型, 估算出路损对 应的传播距离 D, 因此在距离 (XI , Y1 ) 为 D范围内的使用频点 f3的 基站均被影响, 假设使用频点 f3的 BS4在该范围内, 则通知 BS4采取 频谱退让操作。
步骤 207、 协作感知管理设备为 BS1JJE1和 BS1JJE2申请奖励。 步骤 208、 核心网进行奖励决策, 并通知 警终端 BS1JJE1 和 BS1_UE2, BSIJJEI和 BS1JJE2根据奖励情况, 后续适时开启干扰检 测功能。
综上所述,本发明实施例中,通过接收各服务基站的干扰警报信息, 并利用同一个干扰源的干扰警报信息为该干扰源选择用于执行协作频 谱感知的服务基站, 可以选择最为合适的用于执行协作频谱感知的感知 节点, 从而保证协作感知的检测性能; 且服务基站可以将执行协作频谱 感知的任务下发给多个报警终端, 从而可以减轻服务基站的负担。
实施例三
基于与上述方法同样的发明构思, 本发明实施例中还提供了一种协 作感知管理设备, 如图 3所示, 该协作感知管理设备包括:
接收模块 11 ,用于接收来自用于上报干扰警报信息的服务基站的干 扰警报信息, 所述干扰警报信息中携带了干扰源来波方向和干扰源频 点;
确定模块 12,用于利用所述干扰源来波方向和干扰源频点确定对应 于同一个干扰源的干扰警报信息;
选择模块 13 ,用于利用对应于所述同一个干扰源的干扰警报信息为 所述干扰源选择用于执行协作频谱感知的服务基站;
频谱感知模块 14,用于向所述用于执行协作频谱感知的服务基站发 送指示所述用于执行协作频谱感知的服务基站进行频谱感知的协作感 知命令, 并接收所述各用于执行协作频谱感知的服务基站上报的频谱感 知结果, 利用所述频谱感知结果确定协作频谱感知判决结果。
所述接收模块 11 接收的所述干扰警报信息中还携带了第一干扰信 号接收强度和所述用于上报所述干扰警报信息的服务基站的地理位置; 所述选择模块 13,具体用于当有多个用于上报所述干扰警报信息的服务 基站上报对应于所述干扰源的干扰警报信息时, 确定上报的第一干扰信 号接收强度大于预设第一干扰门限的用于上报所述干扰警报信息的服 务基站, 并从确定的用于上报所述干扰警报信息的服务基站中选择指定 第一数量的服务基站为所述干扰源对应的用于执行协作频谱感知的服 务基站; 或者, 当有一个用于上报所述干扰警报信息的服务基站上报对 应于所述干扰源的干扰警报信息时, 利用各服务基站的地理位置获得该 用于上报所述干扰警报信息的服务基站与其它服务基站之间的距离, 并 从距离大于预设距离门限的其它服务基站中选择指定第二数量的服务 基站, 且将所述第二数量的服务基站和该用于上报所述干扰警报信息的 服务基站为所述干扰源对应的用于执行协作频谱感知的服务基站。
该协作感知管理设备还包括: 奖励管理模块 15, 用于利用所述协作 频谱感知判决结果确定各用于执行协作频谱感知的服务基站上报的频 谱感知结果的准确程度, 并利用确定结果为相应的用于执行协作频谱感 知的服务基站申请奖励信息; 和 /或, 确定各用于执行协作频谱感知的服 务基站上报干扰警报信息的时间信息, 并利用确定结果为相应的用于执 行协作频谱感知的服务基站申请奖励信息; 以及, 将申请到的奖励信息 通知给对应的用于执行协作频谱感知的服务基站。
所述频谱感知模块 14发送的所述协作感知命令中携带有上 信息 类型; 所述协作感知管理设备还包括: 频谱退让管理模块 16, 用于当上 报信息类型为硬比特时, 接收各用于执行协作频谱感知的服务基站上报 的第二干扰信号接收强度, 所述第二干扰信号接收强度大于预设第二干 扰门限; 从所述用于执行协作频谱感知的服务基站上报的第二干扰信号 接收强度中选择最大的第二干扰信号接收强度, 并记录上报所述最大的 第二干扰信号接收强度的用于执行协作频谱感知的服务基站的地理位 置; 利用所述最大的第二干扰信号接收强度和所述地理位置估计干扰影 响范围, 并通知所述干扰影响范围内的服务基站执行频谱退让操作。
所述频谱退让管理模块 16,进一步用于利用所述最大的第二干扰信 号接收强度与受扰系统能够容忍的干扰的最大值确定路损, 并确定所述 路损对应的传播距离, 并将与所述地理位置之间的距离在所述传播距离 内的区域设置为所述干扰影响范围。
其中, 本发明装置的各个模块可以集成于一体, 也可以分离部署。 上述模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
实施例四
基于与上述方法同样的发明构思, 本发明实施例中还提供了一种服 务基站, 如图 4所示, 该服务基站包括:
接收模块 21 ,用于接收来自多个用于上报干扰源信息的报警终端的 干扰源信息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 确定模块 22 ,用于利用所述干扰源来波方向和干扰源频点确定对应 于同一个干扰源的干扰源来波方向和干扰源频点;
发送模块 23 , 用于向协作感知管理设备上报干扰警报信息, 所述干 扰警报信息中携带了所述干扰源对应的干扰源来波方向和干扰源频点; 由所述协作感知管理设备利用所述干扰源来波方向和干扰源频点确定 对应于同一干扰源的干扰警报信息, 利用对应于所述同一干扰源的干扰 警报信息为所述干扰源选择用于执行协作频谱感知的服务基站; 频谱感知模块 24,用于在收到来自协作感知管理设备的用于指示进 行频谱感知的协作感知命令后, 将协作感知命令发送给用于感知频谱的 ^¾警终端, 接收所述用于感知频谱的 警终端上"¾的频谱感知结果, 将 收到的频谱感知结果发送给协作感知管理设备; 由协作感知管理设备利 用收到的频谱感知结果确定协作频谱感知判决结果。
本发明实施例中, 所述接收模块 21 接收的所述干扰源信息中还携 带第一干扰信号接收强度; 所述发送模块 23 发送的所述干扰警报信息 中还携带了所述干扰源对应的第一干扰信号接收强度和所述服务基站 的地理位置, 所述干扰源对应的第一干扰信号接收强度为各用于上报干 扰源信息的报警终端上报的最大的第一干扰信号接收强度; 进一步的, 所述发送模块 23 ,具体用于当所述干扰源对应的第一干扰信号接收强度 大于预设第三干扰门限时, 向协作感知管理设备上报所述干扰源对应的 干扰警报信息。
该服务基站还包括: 奖励管理模块 25 , 用于在收到来自所述协作感 知管理设备的奖励信息时, 将所述奖励信息通知给所述用于上报干扰源 信息的报警终端。
其中, 本发明装置的各个模块可以集成于一体, 也可以分离部署。 上述模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
实施例五
基于与上述方法同样的发明构思, 本发明实施例中还提供了一种报 警终端, 如图 5所示, 该"¾警终端包括:
发送模块 31 ,用于向用于上报干扰警报信息的服务基站上报干扰源 信息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 由所述用于 上报干扰警报信息的服务基站将干扰源信息上报给协作感知管理设备, 并由协作感知管理设备利用各用于上报干扰警报信息的服务基站上报 的信息选择用于执行协作频谱感知的服务基站;
频谱感知模块 32,用于在收到来自所述用于执行协作频谱感知的服 务基站的用于指示进行频谱感知的协作感知命令后, 进行频谱感知过 由所述用于执行协作频谱感知的服务基站将收到的频谱感知结果发送 给协作感知管理设备, 并由协作感知管理设备利用收到的频谱感知结果 确定协作频谱感知判决结果。
本发明实施例中, 所述发送模块 31 发送的所述干扰源信息中还携 带了第一干扰信号接收强度; 且所述报警终端还包括: 启动模块 33 , 用 于开启干扰检测功能; 且所述发送模块 31 , 具体用于在开启干扰检测功 能之后, 向所述用于上报干扰警报信息的服务基站上报干扰源信息。
所述启动模块 33 ,具体用于在获得奖励信息次数大于预设次数门限 时, 开启干扰检测功能; 其中, 所述奖励信息是所述用于执行协作频谱 感知的服务基站通知给本设备的; 或者, 所述启动模块 33 , 具体用于在 收到开启干扰检测功能的命令之后, 开启干扰检测功能; 或者, 所述启 动模块 33 , 具体用于在获知本设备的当前能力能够满足预设能力要求 时, 开启干扰检测功能。
所述频谱感知模块 32 收到的所述协作感知命令中携带有上 信息 类型; 所述发送模块 31 , 还用于当所述上报信息类型为硬比特时, 当检 测到第二干扰信号接收强度大于预设第二干扰门限时, 将第二干扰信号 接收强度发送给所述用于执行协作频谱感知的服务基站; 由所述用于执 行协作频谱感知的服务基站将第二干扰信号接收强度发送给协作感知 管理设备, 并由协作感知管理设备利用收到的第二干扰信号接收强度估 计干扰影响范围。
参见图 6, 图 6为本发明实施例的一种协作感知管理设备的结构示 意图。 如图 6所示, 该设备包括: 内存 60和处理器 61。
该内存 60 包括: 第一接收指令、 第一确定指令、 第一选择指令和 第一频谱感知指令。
该处理器 61用于与内存 60进行通信, 执行该第一接收指令、 第一 确定指令、 第一选择指令和第一频谱感知指令, 分别用于执行上述接收 模块 11 , 确定模块 12, 选择模块 13和频谱感知模块 14执行的操作。
该内存 60进一步包括: 第一奖励管理指令和第一频谱退让管理指 令。 该处理器 61进一步与该内存 60进行通信, 执行该第一奖励管理指 令和该第一频谱退让管理指令, 分别用于执行该奖励管理模块 15 和频 谱退让管理模块 16执行的操作。
参见图 7, 图 7为本发明实施例的一种服务基站的结构示意图。 如 图 7所示, 该设备包括: 内存 70和处理器 71。
该内存 70 包括: 第二接收指令、 第二确定指令、 第二发送指令和 第二频谱感知指令。
该处理器 71与该内存 70进行通信, 执行该第二接收指令、 第二确 定指令、 第二发送指令和第二频谱感知指令, 分别用于执行该接收模块 21、 确定模块 22、 发送模块 23和频谱感知模块 24执行的操作。
该内存 70进一步包括: 第二奖励管理指令。 该处理器 71进一步用 于执行该第二奖励管理指令, 用于执行该奖励管理模块 25执行的操作。
参见图 8, 图 8为本发明实施例的一种报警终端的结构示意图。 如 图 8所示, 该设备包括: 内存 80和处理器 81。
该内存 80包括: 第三发送指令和第三频谱感知指令。 该处理器 81 与该内存 80进行通信, 执行该第三发送指令和该第三频谱感知指令, 分别用于执行该发送模块 31和频谱感知模块 32执行的操作。
该内存 80进一步包括: 启动指令。 该处理器 81进一步与该内存 80 进行通信, 执行该启动指令, 用于执行该启动模块 33的操作。
其中, 本发明装置的各个模块可以集成于一体, 也可以分离部署。 上述模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到 本发明可借助软件加必需的通用硬件平台的方式来实现, 当然也可以通 过硬件, 但很多情况下前者是更佳的实施方式。 基于这样的理解, 本发 明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产 品的形式体现出来, 该计算机软件产品存储在一个存储介质中, 包括若 干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网 络设备等)执行本发明各个实施例所述的方法。
本领域技术人员可以理解附图只是一个优选实施例的示意图, 附图 中的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施 例描述进行分布于实施例的装置中, 也可以进行相应变化位于不同于本 实施例的一个或多个装置中。 上述实施例的模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。 以上公开的仅为本发明的几个具体实施例, 但是, 本发明并非局限 于此, 任何本领域的技术人员能思之的变化都应落入本发明的保护范 围。

Claims

权利要求书
1、 一种协作频谱感知方法, 其特征在于, 包括:
协作感知管理设备从用于上报干扰警报信息的服务基站接收干扰 警报信息, 所述干扰警报信息携带了干扰源来波方向和干扰源频点; 所述协作感知管理设备利用所述干扰源来波方向和干扰源频点确 定对应于同一个干扰源的干扰警报信息;
所述协作感知管理设备利用对应于所述同一个干扰源的干扰警报 信息为所述干扰源选择用于执行协作频谱感知的服务基站;
所述协作感知管理设备向所述用于执行协作频谱感知的服务基站 发送指示所述用于执行协作频谱感知的服务基站进行频谱感知的协作 感知命令, 从所述用于执行协作频谱感知的服务基站接收频谱感知结 果, 利用所述频谱感知结果确定协作频谱感知判决结果。
2、 如权利要求 1 所述的方法, 其特征在于, 所述干扰警报信息中 还携带了第一干扰信号接收强度和用于上报所述干扰警报信息的服务 基站的地理位置;
所述协作感知管理设备利用对应于同一个干扰源的干扰警报信息 为所述干扰源选择用于执行协作频谱感知的服务基站, 包括:
当有多个用于上报所述干扰警报信息的服务基站上报对应于所述 干扰源的干扰警报信息时, 所述协作感知管理设备确定所述第一干扰信 号接收强度大于预设第一干扰门限的用于上报所述干扰警报信息的服 务基站, 并从确定的用于上报所述干扰警报信息的服务基站中选择指定 第一数量的服务基站为所述干扰源对应的用于执行协作频谱感知的服 务基站; 或者,
当有一个用于上报所述干扰警报信息的服务基站上报对应于所述 干扰源的干扰警报信息时, 所述协作感知管理设备利用各服务基站的地 理位置获得该用于上报所述干扰警报信息的服务基站与其它服务基站 之间的距离, 并从距离大于预设距离门限的其它服务基站中选择指定第 二数量的服务基站, 且将所述第二数量的服务基站和该用于上报所述干 的服务基站。
3、 如权利要求 1所述的方法, 其特征在于, 所述方法进一步包括: 所述协作感知管理设备利用所述协作频谱感知判决结果确定各用 于执行协作频谱感知的服务基站上报的频谱感知结果的准确程度, 并利 用确定结果为相应的用于执行协作频谱感知的服务基站申请奖励信息; 和 /或,所述协作感知管理设备确定各用于执行协作频谱感知的服务基站 上报干扰警报信息的时间信息, 并利用确定结果为相应的用于执行协作 频谱感知的服务基站申请奖励信息;
所述协作感知管理设备将所述奖励信息通知给对应的用于执行协 作频谱感知的服务基站。
4、 如权利要求 1 所述的方法, 其特征在于, 所述协作感知命令中 携带有上报信息类型, 且当上报信息类型为硬比特时, 所述协作感知管 理设备向所述用于执行协作频谱感知的服务基站发送指示所述用于执 行协作频谱感知的服务基站进行频谱感知的协作感知命令之后, 还包 括:
所述协作感知管理设备接收所述各用于执行协作频谱感知的服务 基站上报的第二干扰信号接收强度; 所述第二干扰信号接收强度大于预 设第二干扰门限;
所述协作感知管理设备从所述各用于执行协作频谱感知的服务基 站上报的第二干扰信号接收强度中选择最大的第二干扰信号接收强度, 并记录上报所述最大的第二干扰信号接收强度的用于执行协作频谱感 知的服务基站的地理位置;
所述协作感知管理设备利用所述最大的第二干扰信号接收强度和 所述地理位置估计干扰影响范围, 并通知所述干扰影响范围内的服务基 站执行频谱退让操作。
5、 如权利要求 4所述的方法, 其特征在于, 所述协作感知管理设 备利用所述最大的第二干扰信号接收强度和所述地理位置估计干扰影 响范围, 包括:
所述协作感知管理设备利用所述最大的第二干扰信号接收强度与 受扰系统能够容忍的干扰的最大值确定路损, 并确定所述路损对应的传 播距离, 并将与所述地理位置之间的距离在所述传播距离内的区域设置 为干扰影响范围。
6、 一种协作频谱感知方法, 其特征在于, 包括:
服务基站接收来自多个用于上报干扰源信息的报警终端的干扰源 信息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 并利用所述 干扰源来波方向和干扰源频点确定对应于同一个干扰源的干扰源来波 方向和干尤源频点;
所述服务基站向协作感知管理设备上报干扰警报信息, 所述干扰警 报信息中携带了所述干扰源对应的干扰源来波方向和干扰源频点; 由所 述协作感知管理设备利用所述干扰源来波方向和干扰源频点确定对应 于所述同一干扰源的干扰警报信息, 利用对应于所述同一干扰源的干扰 警报信息为所述干扰源选择用于执行协作频谱感知的服务基站;
所述服务基站在收到来自所述协作感知管理设备的指示进行频谱 感知的协作感知命令后, 将协作感知命令发送给用于感知频谱的报警终 端, 并接收所述用于感知频谱的报警终端上报的频谱感知结果, 将收到 的频谱感知结果发送给所述协作感知管理设备; 由所述协作感知管理设 备利用收到的所述频谱感知结果确定协作频谱感知判决结果。
7、 如权利要求 6所述的方法, 其特征在于, 所述干扰源信息中还 携带第一干扰信号接收强度, 且所述干扰警报信息中还携带了所述干扰 源对应的第一干扰信号接收强度和所述服务基站的地理位置, 所述干扰 源对应的第一干扰信号接收强度为所述各用于上报干扰源信息的报警 终端上报的最大的第一干扰信号接收强度;
所述服务基站向协作感知管理设备上报干扰警报信息, 包括: 当所述干扰源对应的第一干扰信号接收强度大于预设第三干扰门 限时, 所述服务基站向协作感知管理设备上报所述干扰源对应的干扰警 报信息。
8、 如权利要求 6所述的方法, 其特征在于, 所述方法进一步包括: 所述服务基站在收到来自所述协作感知管理设备的奖励信息时, 将 所述奖励信息通知给所述用于上报干扰源信息的报警终端。
9、 一种协作频谱感知方法, 其特征在于, 包括:
报警终端向用于上报干扰警报信息的服务基站上报干扰源信息, 所 述干扰源信息包括干扰源来波方向和干扰源频点; 由所述用于上报干扰 警报信息的服务基站将干扰源信息上报给协作感知管理设备, 并由协作 感知管理设备利用所述各用于上报干扰警报信息的服务基站上报的信 息选择用于执行协作频谱感知的服务基站;
所述报警终端在收到来自所述用于执行协作频谱感知的服务基站 的指示进行频谱感知的协作感知命令后, 进行频谱感知过程, 并将频谱 感知结果发送给所述用于执行协作频谱感知的服务基站; 由所述用于执 行协作频谱感知的服务基站将收到的频谱感知结果发送给所述协作感 知管理设备, 并由所述协作感知管理设备利用收到的频谱感知结果确定 协作频谱感知判决结果。
10、 如权利要求 9所述的方法, 其特征在于, 所述干扰源信息中还 携带了第一干扰信号接收强度; 所述报警终端向所述用于上报干扰警报 信息的服务基站上报所述干扰源信息, 包括:
所述报警终端在开启干扰检测功能之后, 向所述用于上报干扰警报 信息的服务基站上报所述干扰源信息。
11、 如权利要求 10 所述的方法, 其特征在于, 所述报警终端开启 干扰检测功能的过程, 进一步包括:
所述报警终端在获得奖励信息次数大于预设次数门限时, 开启干扰 检测功能; 其中, 所述奖励信息是所述用于执行协作频谱感知的服务基 站通知给所述报警终端的; 或者,
所述报警终端在收到开启干扰检测功能的命令之后, 开启干扰检测 功能; 或者,
所述报警终端在获知本设备的当前能力能够满足预设能力要求时, 开启干扰检测功能。
12、 如权利要求 9所述的方法, 其特征在于, 所述协作感知命令中 携带有上报信息类型, 且当上报信息类型为硬比特时, 所述方法进一步 包括:
所述报警终端检测到第二干扰信号接收强度大于预设第二干扰门 限时, 将第二干扰信号接收强度发送给所述用于执行协作频谱感知的服 务基站; 由所述用于执行协作频谱感知的服务基站将第二干扰信号接收 强度发送给协作感知管理设备, 并由协作感知管理设备利用收到的第二 干扰信号接收强度估计干扰影响范围。
13、 一种协作感知管理设备, 其特征在于, 包括:
接收模块, 用于接收来自用于上报干扰警报信息的服务基站的干扰 警报信息, 所述干扰警报信息中携带了干扰源来波方向和干扰源频点; 确定模块, 用于利用所述干扰源来波方向和干扰源频点确定对应于 同一个干扰源的干扰警报信息;
选择模块, 用于利用对应于所述同一个干扰源的干扰警报信息为所 述干扰源选择用于执行协作频谱感知的服务基站;
频谱感知模块, 用于向所述用于执行协作频谱感知的服务基站发送 指示所述用于执行协作频谱感知的服务基站进行频谱感知的协作感知 命令, 并接收所述各用于执行协作频谱感知的服务基站上报的频谱感知 结果, 利用所述频谱感知结果确定协作频谱感知判决结果。
14、 如权利要求 13所述的协作感知管理设备, 其特征在于, 所述接收模块接收的所述干扰警报信息中还携带了第一干扰信号 接收强度和所述用于上报所述干扰警报信息的服务基站的地理位置; 所述选择模块, 具体用于当有多个用于上报所述干扰警报信息的服 务基站上报对应于所述干扰源的干扰警报信息时, 确定上报的第一干扰 信号接收强度大于预设第一干扰门限的用于上报所述干扰警报信息的 服务基站, 并从确定的用于上报所述干扰警报信息的服务基站中选择指 定第一数量的服务基站为所述干扰源对应的用于执行协作频谱感知的 服务基站; 或者,
当有一个用于上报所述干扰警报信息的服务基站上报对应于所述 干扰源的干扰警报信息时, 利用各服务基站的地理位置获得该用于上报 所述干扰警报信息的服务基站与其它服务基站之间的距离, 并从距离大 于预设距离门限的其它服务基站中选择指定第二数量的服务基站, 且将 所述第二数量的服务基站和该用于上报所述干扰警报信息的服务基站 选为所述干扰源对应的用于执行协作频谱感知的服务基站。
15、 如权利要求 13 所述的协作感知管理设备, 其特征在于, 还包 括: 奖励管理模块, 用于利用所述协作频谱感知判决结果确定各用于执 行协作频谱感知的服务基站上报的频谱感知结果的准确程度, 并利用确 定结果为相应的用于执行协作频谱感知的服务基站申请奖励信息; 和 / 或, 确定各用于执行协作频谱感知的服务基站上报干扰警报信息的时间 奖励信息;
将申请到的奖励信息通知给对应的用于执行协作频谱感知的服务 基站。
16、 如权利要求 13所述的协作感知管理设备, 其特征在于, 所述频谱感知模块发送的所述协作感知命令中携带有上报信息类 型;
所述协作感知管理设备还包括: 频谱退让管理模块, 用于当上报信 息类型为硬比特时, 接收各用于执行协作频谱感知的服务基站上报的第 二干扰信号接收强度, 所述第二干扰信号接收强度大于预设第二干扰门 限; 从所述用于执行协作频谱感知的服务基站上报的第二干扰信号接收 强度中选择最大的第二干扰信号接收强度, 并记录上报所述最大的第二 干扰信号接收强度的用于执行协作频谱感知的服务基站的地理位置; 利 用所述最大的第二干扰信号接收强度和所述地理位置估计干扰影响范 围, 并通知所述干扰影响范围内的服务基站执行频谱退让操作。
17、 如权利要求 16所述的协作感知管理设备, 其特征在于, 所述频谱退让管理模块, 进一步用于利用所述最大的第二干扰信号 接收强度与受扰系统能够容忍的干扰的最大值确定路损, 并确定所述路 损对应的传播距离, 并将与所述地理位置之间的距离在所述传播距离内 的区域设置为所述干扰影响范围。
18、 一种服务基站, 其特征在于, 包括: 接收模块, 用于接收来自多个用于上报干扰源信息的报警终端的干 扰源信息, 所述干扰源信息包括干扰源来波方向和干扰源频点;
确定模块, 用于利用所述干扰源来波方向和干扰源频点确定对应于 同一个干扰源的干扰源来波方向和干扰源频点;
发送模块, 用于向协作感知管理设备上报干扰警报信息, 所述干扰 警报信息中携带了所述干扰源对应的干扰源来波方向和干扰源频点; 由 所述协作感知管理设备利用所述干扰源来波方向和干扰源频点确定对 应于同一干扰源的干扰警报信息, 利用对应于所述同一干扰源的干扰警 报信息为所述干扰源选择用于执行协作频谱感知的服务基站;
频谱感知模块, 用于在收到来自所述协作感知管理设备的用于指示 进行频谱感知的协作感知命令后, 将协作感知命令发送给用于感知频谱 的报警终端, 并接收所述用于感知频谱的报警终端上报的频谱感知结 果, 将收到的频谱感知结果发送给所述协作感知管理设备; 由协作感知 管理设备利用收到的所述频谱感知结果确定协作频谱感知判决结果。
19、 如权利要求 18所述的服务基站, 其特征在于,
所述接收模块接收的所述干扰源信息中还携带第一干扰信号接收 强度;
所述发送模块发送的所述干扰警报信息中还携带了所述干扰源对 应的第一干扰信号接收强度和所述服务基站的地理位置, 所述干扰源对 应的第一干扰信号接收强度为各用于上报干扰源信息的报警终端上报 的最大的第一干扰信号接收强度;
所述发送模块, 具体用于当所述干扰源对应的第一干扰信号接收强 度大于预设第三干扰门限时, 向协作感知管理设备上报所述干扰源对应 的干扰警报信息。
20、 如权利要求 18所述的服务基站, 其特征在于, 还包括: 奖励管理模块, 用于在收到来自所述协作感知管理设备的奖励信息 时, 将所述奖励信息通知给对应所述用于上报干扰源信息的报警终端。
21、 一种报警终端, 其特征在于, 包括:
发送模块, 用于向用于上报干扰警报信息的服务基站上报干扰源信 息, 所述干扰源信息包括干扰源来波方向和干扰源频点; 由所述用于上 报干扰警报信息的服务基站将干扰源信息上报给协作感知管理设备, 并 由协作感知管理设备利用所述各用于上报干扰警报信息的服务基站上 报的信息选择用于执行协作频谱感知的服务基站;
频谱感知模块, 用于在收到来自所述用于执行协作频谱感知的服务 基站的指示进行频谱感知的协作感知命令后, 进行频谱感知过程, 并将 频谱感知结果发送给所述用于执行协作频谱感知的服务基站; 由所述用 于执行协作频谱感知的服务基站将收到的频谱感知结果发送给所述协 作感知管理设备, 并由所述协作感知管理设备利用收到的频谱感知结果 确定协作频谱感知判决结果。
22、 如权利要求 21所述的报警终端, 其特征在于,
所述发送模块发送的所述干扰源信息中还携带了第一干扰信号接 收强度; 且所述报警终端还包括: 启动模块, 用于开启干扰检测功能; 所述发送模块, 具体用于在开启干扰检测功能之后, 向所述用于上 报干扰警报信息的服务基站上报干扰源信息。
23、 如权利要求 22所述的报警终端, 其特征在于,
所述启动模块, 具体用于在获得奖励信息次数大于预设次数门限 时, 开启干扰检测功能; 其中, 所述奖励信息是所述用于执行协作频谱 感知的服务基站通知给本设备的; 或者,
所述启动模块, 具体用于在收到开启干扰检测功能的命令之后, 开 启干扰检测功能; 或者, 所述启动模块, 具体用于在获知本设备的当前能力能够满足预设能 力要求时, 开启干扰检测功能。
24、 如权利要求 21所述的报警终端, 其特征在于,
所述频谱感知模块收到的所述协作感知命令中携带有上报信息类 型;
所述发送模块, 还用于当所述上报信息类型为硬比特时, 当检测到 第二干扰信号接收强度大于预设第二干扰门限时, 将第二干扰信号接收 强度发送给所述用于执行协作频谱感知的服务基站; 由所述用于执行协 作频谱感知的服务基站将第二干扰信号接收强度发送给协作感知管理 设备, 并由协作感知管理设备利用收到的第二干扰信号接收强度估计干 扰影响范围。
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