CN112188575A - Inter-cell communication switching method based on cooperative mode - Google Patents
Inter-cell communication switching method based on cooperative mode Download PDFInfo
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Abstract
The invention provides a method for switching communication among cells based on a collaborative mode, which can provide a plurality of alternative base stations at one time according to the position of mobile equipment, and realizes that the mobile equipment preferentially selects and accesses the base station with the highest signal quality in the communication process according to the communication effect fed back by accessing the mobile equipment with different positions in a preset area based on the collaborative filtering mode, thereby not only enhancing the fault tolerance of the mobile equipment for communication switching, but also avoiding the unstable communication process caused by the communication switching based on a single factor.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a method for switching communication among cells based on a cooperative mode.
Background
At present, the handover technology of mobile communication is usually implemented based on a single-factor judgment condition, which mainly considers the actual distance between the base station and the mobile device, the actual carrier signal/interference signal quality ratio, and other indexes to perform the single-factor judgment, and each handover operation is performed independently, and it does not take the historical access data as the handover consideration factor. Although this method can select a suitable base station for handover access in a short time, it cannot guarantee to select a base station with the best performance. In addition, in a scenario of large-area deployment of a 5G base station, the conventional base station communication switching method cannot effectively improve the efficiency of mobile communication.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a cooperative mode-based inter-cell communication switching method, which comprises the steps of detecting hot spot signal intensity distribution information of a preset region, determining hot spot high-frequency positions existing in the preset region, simultaneously determining base station setting positions of all base stations in the preset region, determining actual communication performance information of terminal equipment accessed to corresponding base stations at different positions in the preset region according to the hot spot high-frequency positions and the base station setting positions, determining probability distribution information of different hot spot high-frequency positions accessed to the same base station in the preset region, finally determining a comprehensive communication signal quality evaluation index value between each hot spot high-frequency position and different base station setting positions in the preset region according to the actual communication performance information and the probability distribution information, and then evaluating the index value according to the comprehensive communication signal quality, switching the connection state of the terminal equipment and the base station; therefore, the inter-cell communication switching method based on the collaborative mode can provide a plurality of alternative base stations at one time according to the position of the mobile equipment, and the mobile equipment in different positions in the preset area is accessed to the fed back communication effect based on the collaborative filtering mode, so that the mobile equipment is preferentially selected to access the base station with the highest signal quality in the communication process, the fault tolerance of the mobile equipment in communication switching is enhanced, and the unstable communication process caused by the single-factor-based communication switching is avoided.
The invention provides a method for switching communication among cells based on a cooperative mode, which is characterized by comprising the following steps:
step S1, detecting hotspot signal intensity distribution information of a preset area so as to determine hotspot high-frequency positions existing in the preset area and determine base station setting positions of all base stations in the preset area;
step S2, according to the hot spot high-frequency position and the base station setting position, determining the actual communication performance information of the terminal device accessing the corresponding base station at different positions in the preset area;
step S3, determining probability distribution information of different hot spot high-frequency positions in the preset area accessing the same base station;
step S4, according to the actual communication performance information and the probability distribution information, determining a comprehensive communication signal quality evaluation index value between each hotspot high-frequency position and different base station setting positions in the preset area, and then switching the connection state of the terminal equipment and the base station according to the comprehensive communication signal quality evaluation index value;
further, in the step S1, detecting the hotspot signal strength distribution information of the predetermined area, so as to determine the high-frequency location of the hotspot existing in the predetermined area specifically includes,
step S101, dividing the preset area into a plurality of sub-areas, and detecting hotspot signal intensity amplitude distribution data in the sub-areas;
step S102, carrying out filtering and noise reduction processing on the hotspot signal intensity amplitude distribution data, and correspondingly forming a plurality of sub-area hotspot signal intensity plane distribution maps according to the result of the filtering and noise reduction processing;
step S103, splicing the plurality of sub-region hotspot signal intensity plane distribution maps to form a hotspot signal intensity overall distribution map about the preset region, and determining a hotspot high-frequency position in the preset region according to the hotspot signal intensity overall distribution map;
further, in step S1, the dividing the preset region into a plurality of sub-regions, and detecting the hotspot signal intensity distribution data inside the sub-regions includes,
dividing the preset area into a plurality of sub-areas with the same shape and area, and carrying out full-area scanning detection on the sub-areas so as to obtain hotspot signal intensity amplitude distribution data in the sub-areas;
alternatively, the first and second electrodes may be,
in step S102, the hotspot signal intensity plane distribution maps of a plurality of sub-areas are spliced to form a hotspot signal intensity overall distribution map about the predetermined area, and then according to the hotspot signal intensity overall distribution map, the specific determination of the high-frequency position of the hotspot existing in the predetermined area includes,
step S1021, carrying out hot spot signal intensity smoothing processing on the edge area of the sub-area hot spot signal intensity plane distribution diagram, and splicing the sub-area hot spot signal intensity plane distribution diagram subjected to the hot spot signal intensity smoothing processing, so as to form a hot spot signal intensity overall distribution diagram related to the preset area;
step S1022, determining a distribution position of a hot spot signal intensity extremum existing in the preset region according to the hot spot signal intensity overall distribution map, and taking the distribution position of the hot spot signal intensity extremum as the hot spot high-frequency position;
further, in step S2, according to the high-frequency position of the hot spot and the setting position of the base station, determining that the actual communication performance information of the terminal device accessing the corresponding base station at different positions in the preset area specifically includes,
step S201, determining a plurality of mobile communication characterization parameters in the preset area according to the high-frequency position of the hotspot and the setting position of the base station;
step S202, preprocessing the plurality of mobile communication characterization parameters so as to determine a plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions in the preset area;
step S203, according to a plurality of said comprehensive communication signal quality evaluation index values, constructing and forming a corresponding base station communication performance measurement matrix An*mWherein n represents the number of the base station setting positions, and m represents the number of the high-frequency positions of the hot spots;
further, in step S202, the preprocessing the plurality of mobile communication characterizing parameters specifically includes obtaining, according to the plurality of mobile communication characterizing parameters, a radio frequency signal strength received by the mobile device and a data transmission downlink speed of the mobile device, and correcting, by using the radio frequency signal strength and the data transmission downlink speed, a plurality of comprehensive communication signal quality evaluation values of the terminal device accessing to corresponding base stations at different positions, and the specific process includes:
firstly, the strength E of the radio frequency signal received by the mobile equipment is determined according to the strength of the radio frequency signal transmitted by the base station and the distance between the mobile equipment and the base station by using the following formula (1)
In the above formula (1), E represents the strength of the rf signal received by the mobile device, W represents the strength of the rf signal transmitted by the base station, μfDenotes the transmit antenna gain factor, μ, of the base stationjThe method comprises the steps of representing a receiving antenna gain coefficient of the mobile equipment, representing the wavelength of a transmitting signal of a base station by lambda, representing the distance between the mobile equipment and the base station by d, representing a path loss coefficient of a radio frequency signal transmitted by the base station by r, and representing a circumference ratio by pi;
secondly, the data transmission downlink speed V of the mobile equipment is determined by using the following formula (2)
In the above formula (2), V represents the data transmission downlink speed of the mobile device, M represents the number of transmitting antennas of the base station, K represents the total number of locations to which the terminal device has moved, aiRepresents the channel matrix between the terminal device and the base station when the terminal device moves to the ith position, and i is 1, 2, 3, …, K, PiRepresenting the Rice factor between the terminal equipment and the base station when the terminal equipment moves to the ith position, and tr () representing the rank calculation of the matrix;
thirdly, using the following formula (3), determining a correction value σ for correcting a plurality of integrated communication signal quality evaluation values of the terminal device accessing the corresponding base station at different positions
Fourthly, adding the correction value sigma to each comprehensive communication signal quality evaluation value of the original terminal equipment accessed to the corresponding base station at different positions, thereby realizing the correction of the comprehensive communication signal quality evaluation value;
further, in step S201, determining a plurality of mobile communication characterization parameters in the preset area according to the high-frequency location of the hotspot and the setting location of the base station specifically includes,
according to the hotspot high-frequency position and the base station setting position, determining the strength of a radio-frequency signal transmitted by a base station in the preset area, the ratio of a carrier signal to an interference signal and the distance between mobile equipment and the base station, and taking the radio-frequency signal strength, the ratio of the carrier signal to the interference signal and the distance as a plurality of mobile communication characterization parameters;
in step S202, the pre-processing is performed on the mobile communication characterization parameters, so as to determine that the multiple integrated communication signal quality evaluation index values of the terminal device accessing the corresponding base station at different locations in the preset area specifically include,
carrying out weighted calculation processing on the strength of the radio frequency signal transmitted by the base station, the ratio of the carrier signal to the interference signal and the distance between the mobile equipment and the base station so as to determine a plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions
In step S203, a corresponding base station communication performance measurement matrix a is constructed and formed according to a plurality of the integrated communication signal quality evaluation index valuesn*mSpecifically, the method comprises the following steps of,
all the comprehensive communication signal quality evaluation index values are used as matrix elements to construct and form the base station communication performance measurement matrix An*mTherefore, the advantages and disadvantages of the actual communication between the current position of the preset area and the base station are measured through the matrix；
Further, in step S3, the determining of the probability distribution information of different hot spot high frequency locations accessing the same base station in the predetermined area specifically includes,
step S301, determining a base station communication performance measurement matrix An*mCosine similarity values between every two different row vectors are used as similarity values between every two high-frequency positions of different hot spots;
step S302, the cosine similarity value is used as a matrix element, so that a similarity matrix S is constructed and formedm*mThereby passing through the similarity matrix Sm*mRepresenting probability distribution information of different hot spot high-frequency positions accessed to the same base station;
further, in the step S4, the determining, according to the actual communication performance information and the probability distribution information, a value of an evaluation index of the quality of the integrated communication signal between each high-frequency position of the hot spot and the set position of the different base station in the preset area specifically includes,
step S401A, determining a base station communication performance measurement matrix An*mWith the similarity matrix Sm*mAnd recording the product result as a matrix Rn*m；
Step S402A, converting the matrix Rn*mThe ith row vector (r)i1，ri2，ri3，…，rim) As a comprehensive communication signal quality evaluation index value between each hotspot high-frequency position and different base station setting positions, wherein i is 1, 2, 3, …, n;
further, in the step S4, the switching the connection state between the terminal device and the base station according to the integrated communication signal quality evaluation index value specifically includes,
step S401B, evaluating the index value (r) of the quality of the integrated communication signali1，ri2，ri3，…，rim) All elements in the sequence are sorted in descending order, so that a sequence with all element values from high to low is obtained, and the larger the element value in the sequence is, the more reliable the communication between the high-frequency position of the current hot spot and the corresponding base station isHigh;
step S402B, according to the sequence, the terminal device is switched to connect to the base station with the highest communication reliability.
Compared with the prior art, the inter-cell communication switching method based on the cooperative mode comprises the steps of detecting hotspot signal strength distribution information of a preset area so as to determine the high-frequency position of a hotspot existing in the preset area, simultaneously determining the base station setting positions of all base stations in the preset area, determining the actual communication performance information of the terminal equipment accessed to the corresponding base stations at different positions in the preset area according to the high-frequency position of the hot spot and the base station setting position, determining probability distribution information of different hotspot high-frequency positions in the preset area accessing the same base station, finally determining a comprehensive communication signal quality evaluation index value between each hotspot high-frequency position in the preset area and different base station setting positions according to the actual communication performance information and the probability distribution information, and switching the connection state of the terminal equipment and the base station according to the comprehensive communication signal quality evaluation index value; the inter-cell communication switching method based on the collaborative mode can provide a plurality of alternative base stations at one time according to the position of the mobile equipment, and based on the collaborative filtering mode, the mobile equipment in different positions of the preset area is accessed to the fed back communication effect, so that the mobile equipment can preferentially select and access the base station with the highest signal quality in the communication process, the fault tolerance of the mobile equipment in communication switching is enhanced, and the unstable condition of the communication process caused by the communication switching based on a single factor is also avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a cooperative mode-based inter-cell communication handover method provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flowchart of a method for switching communication between cells based on a cooperative method according to an embodiment of the present invention. The method for switching communication among the cells based on the cooperative mode comprises the following steps:
step S1, detecting hotspot signal intensity distribution information of a preset area so as to determine hotspot high-frequency positions existing in the preset area and determine base station setting positions of all base stations in the preset area;
step S2, according to the hot spot high-frequency position and the base station setting position, determining the actual communication performance information of the terminal device accessing the corresponding base station at different positions in the preset area;
step S3, determining probability distribution information of different hot spot high-frequency positions in the preset area accessing the same base station;
step S4, determining a comprehensive communication signal quality evaluation index value between each hotspot high-frequency position in the preset area and different base station setting positions according to the actual communication performance information and the probability distribution information, and switching the connection state between the terminal device and the base station according to the comprehensive communication signal quality evaluation index value.
The inter-cell communication switching method based on the cooperative mode comprises the steps of determining a hot spot high-frequency position and a base station setting position of a preset area, then determining a plurality of mobile communication representation parameters corresponding to the preset area, determining an optimal communication base station corresponding to the current position of the terminal equipment according to the mobile communication representation parameters, and never switching and connecting the mobile equipment to the optimal communication base station.
Preferably, in step S1, detecting the strength distribution information of the hotspot signal in the predetermined area, so as to determine the high-frequency location of the hotspot existing in the predetermined area specifically includes,
step S101, dividing the preset area into a plurality of sub-areas, and detecting hotspot signal intensity amplitude distribution data in the sub-areas;
step S102, carrying out filtering and noise reduction processing on the hotspot signal intensity amplitude distribution data, and correspondingly forming a plurality of sub-area hotspot signal intensity plane distribution maps according to the result of the filtering and noise reduction processing;
step S103, splicing the plurality of sub-region hotspot signal intensity plane distribution maps to form a hotspot signal intensity overall distribution map related to the preset region, and determining a hotspot high-frequency position existing in the preset region according to the hotspot signal intensity overall distribution map.
The preset area is divided into a plurality of sub-areas, so that the hot spot existence condition of the preset area can be accurately detected, and the hot spot omission condition is avoided.
Preferably, in step S1, the dividing the preset region into several sub-regions, and the detecting the hotspot signal intensity amplitude distribution data inside the sub-regions includes,
and dividing the preset area into a plurality of sub-areas with the same shape and area, and carrying out full-area scanning detection on the sub-areas so as to obtain hotspot signal intensity amplitude distribution data in the sub-areas.
The comprehensiveness and the accuracy of hot spot existence condition detection can be improved through the sub-area division and scanning detection mode of the preset area.
Preferably, in step S102, the hotspot signal intensity plane distribution maps of a plurality of sub-areas are spliced to form a hotspot signal intensity overall distribution map about the predetermined area, and then according to the hotspot signal intensity overall distribution map, determining the high-frequency position of a hotspot existing in the predetermined area specifically includes,
step S1021, carrying out hot spot signal intensity smoothing processing on the edge area of the sub-area hot spot signal intensity plane distribution diagram, and splicing the sub-area hot spot signal intensity plane distribution diagram subjected to the hot spot signal intensity smoothing processing, so as to form a hot spot signal intensity overall distribution diagram related to the preset area;
step S1022, determining a distribution position of a hotspot signal intensity extremum existing in the preset region according to the overall hotspot signal intensity distribution map, and using the distribution position of the hotspot signal intensity extremum as the hotspot high-frequency position.
The hot spot signal intensity smoothing processing can improve the connection stability of splicing between hot spot signal intensity plane distribution graphs of adjacent sub-areas, so that the reliability of determining the high-frequency position of the hot spot from the hot spot signal intensity overall distribution graph is ensured.
Preferably, in step S2, according to the high-frequency position of the hot spot and the setting position of the base station, determining that the actual communication performance information of the terminal device accessing the corresponding base station at different positions in the preset area specifically includes,
step S201, determining a plurality of mobile communication characterization parameters in the preset area according to the high-frequency position of the hotspot and the setting position of the base station;
step S202, preprocessing the plurality of mobile communication characterization parameters so as to determine a plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions in the preset area;
step S203, according to a plurality of said comprehensive communication signal quality evaluation index values, constructing and forming a corresponding base station communication performance measurement matrix An*mWherein n represents the number of the base station setting positions, and m represents the number of the high-frequency positions of the hot spot.
Constructing and forming a corresponding base station communication performance measurement matrix A according to a plurality of comprehensive communication signal quality evaluation index valuesn*mAnd the accurate communication quality evaluation can be carried out on the preset area from a multi-dimensional level.
Preferably, in step S201, determining a plurality of mobile communication characterizing parameters in the preset area according to the high-frequency position of the hotspot and the setting position of the base station specifically includes,
according to the hotspot high-frequency position and the base station setting position, determining the strength of a radio-frequency signal transmitted by a base station in the preset area, the ratio of a carrier signal to an interference signal and the distance between mobile equipment and the base station, and taking the radio-frequency signal strength, the ratio of the carrier signal to the interference signal and the distance as a plurality of mobile communication characterization parameters;
in step S202, the pre-processing is performed on the mobile communication characterization parameters, so as to determine that the multiple integrated communication signal quality evaluation index values of the terminal device accessing the corresponding base station at different locations in the preset area specifically include,
carrying out weighted calculation processing on the strength of the radio frequency signal transmitted by the base station, the ratio of the carrier signal to the interference signal and the distance between the mobile equipment and the base station so as to determine a plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions;
in step S203, a corresponding base station communication performance measurement matrix a is constructed and formed according to a plurality of the integrated communication signal quality evaluation index valuesn*mSpecifically, the method comprises the following steps of,
taking all the comprehensive communication signal quality evaluation index values asMatrix elements, thereby constructing and forming the base station communication performance measurement matrix An*mTherefore, the practical communication superiority and inferiority between the current position of the preset area and the base station are measured through the matrix.
Preferably, in step S202, the preprocessing the plurality of mobile communication characterizing parameters specifically includes obtaining, according to the plurality of mobile communication characterizing parameters, a radio frequency signal strength received by the mobile device and a data transmission downlink speed of the mobile device, and correcting, by using the radio frequency signal strength and the data transmission downlink speed, a plurality of comprehensive communication signal quality evaluation values of the terminal device accessing to corresponding base stations at different locations, and the specific process includes:
first, the strength E of the RF signal received by the mobile device is determined according to the strength of the RF signal transmitted by the base station and the distance between the mobile device and the base station using the following formula (1)
In the above formula (1), E represents the strength of the rf signal received by the mobile device, W represents the strength of the rf signal transmitted by the base station, μfDenotes the transmit antenna gain factor, μ, of the base stationjThe method comprises the steps of representing a receiving antenna gain coefficient of the mobile equipment, representing the wavelength of a transmitting signal of a base station by lambda, representing the distance between the mobile equipment and the base station by d, representing a path loss coefficient of a radio frequency signal transmitted by the base station by r, and representing a circumference ratio by pi;
secondly, the data transmission downlink speed V of the mobile equipment is determined by using the following formula (2)
In the above formula (2), V represents the data transmission downlink speed of the mobile device, M represents the number of transmitting antennas of the base station, K represents the total number of locations to which the terminal device has moved, aiIndicating that the terminal device moved to the ith positionChannel matrix with base station, and i is 1, 2, 3, …, K, PiRepresenting the Rice factor between the terminal equipment and the base station when the terminal equipment moves to the ith position, and tr () representing the rank calculation of the matrix;
thirdly, using the following formula (3), determining a correction value σ for correcting a plurality of integrated communication signal quality evaluation values of the terminal device accessing the corresponding base station at different positions
Fourthly, adding the correction value sigma to each comprehensive communication signal quality evaluation value of the original terminal equipment accessed to the corresponding base station at different positions, thereby realizing the correction of the comprehensive communication signal quality evaluation value.
The radio frequency signal strength received by the mobile equipment is obtained by using a formula (1) so as to reflect the quality of the communication signal according to the obtained signal strength of the receiving end of the equipment, and the data transmission downlink speed of the mobile equipment is obtained by using a formula (2) so as to laterally reflect the downlink experience condition of a user at the end of the mobile equipment through the data transmission downlink speed and always correct the quality of the communication signal; and finally, obtaining a plurality of comprehensive communication signal quality evaluation index correction values of the terminal equipment accessing the corresponding base station at different positions by using a formula (3), aiming at correcting a plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions by using the correction values, so that the obtained plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions can reflect the real condition of the communication signal quality.
Preferably, in step S3, the determining probability distribution information of accessing the same base station at different hotspot high-frequency locations in the predetermined area specifically includes,
step S301, determining a base station communication performance measurement matrix An*mCosine similarity values between two of the middle and different row vectors are used as phases between two of the high-frequency positions of different hot spotsA similarity value;
step S302, the cosine similarity value is used as a matrix element, so that a similarity matrix S is constructed and formedm*mThereby passing through the similarity matrix Sm*mAnd representing probability distribution information of different hot spot high-frequency positions accessed to the same base station.
Measuring matrix A by calculating communication performance of base stationn*mThe cosine similarity values between every two different row vectors can quickly and accurately determine the similarity values between every two high-frequency positions of different hot spots, and effectively reduce the calculation workload of the similarity values.
Preferably, in step S4, the determining, according to the actual communication performance information and the probability distribution information, a comprehensive communication signal quality evaluation index value between each high-frequency position of the hotspot in the preset area and the different setting positions of the base station specifically includes,
step S401A, determining a base station communication performance measurement matrix An*mWith the similarity matrix Sm*mAnd recording the product result as a matrix Rn*m；
Step S402A, converting the matrix Rn*mThe ith row vector (r)i1，ri2，ri3，…，rim) And (3) as an integrated communication signal quality evaluation index value between each hotspot high-frequency position and different base station setting positions, wherein i is 1, 2, 3, …, n.
Preferably, in step S4, the switching the connection state between the terminal device and the base station according to the integrated communication signal quality evaluation index value specifically includes,
step S401B, evaluating the index value (r) of the quality of the integrated communication signali1，ri2，ri3，…，rim) All elements in the sequence are arranged in a descending order, so that a sequence with all element values from high to low is obtained, and the larger the element value in the sequence is, the higher the communication reliability between the current hotspot high-frequency position and the corresponding base station is;
step S402B, according to the sequence, the terminal device is switched to connect to the base station with the highest communication reliability.
The switching mode can ensure that the terminal equipment is switched and connected to the base station with the optimal communication quality at the current position, thereby improving the communication stability of the terminal equipment.
It can be known from the content of the above embodiment that the inter-cell communication handover method based on the cooperative manner includes detecting hot spot signal strength distribution information of a predetermined area, thereby determining hot spot high frequency positions existing in the predetermined area, simultaneously determining base station setting positions of all base stations in the predetermined area, then determining actual communication performance information of terminal devices accessing corresponding base stations at different positions in the predetermined area according to the hot spot high frequency positions and the base station setting positions, determining probability distribution information of different hot spot high frequency positions accessing the same base station in the predetermined area, finally determining a comprehensive communication signal quality evaluation index value between each hot spot high frequency position and different base station setting positions in the predetermined area according to the actual communication performance information and the probability distribution information, and then evaluating the index value according to the comprehensive communication signal quality, switching the connection state of the terminal equipment and the base station; therefore, the inter-cell communication switching method based on the collaborative mode can provide a plurality of alternative base stations at one time according to the position of the mobile equipment, and the mobile equipment in different positions in the preset area is accessed to the fed back communication effect based on the collaborative filtering mode, so that the mobile equipment is preferentially selected to access the base station with the highest signal quality in the communication process, the fault tolerance of the mobile equipment in communication switching is enhanced, and the unstable communication process caused by the single-factor-based communication switching is avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The method for switching communication among cells based on the cooperative mode is characterized by comprising the following steps:
step S1, detecting hotspot signal intensity distribution information of a preset area so as to determine hotspot high-frequency positions existing in the preset area and determine base station setting positions of all base stations in the preset area;
step S2, according to the hot spot high-frequency position and the base station setting position, determining the actual communication performance information of the terminal device accessing the corresponding base station at different positions in the preset area;
step S3, determining probability distribution information of different hot spot high-frequency positions in the preset area accessing the same base station;
step S4, determining a comprehensive communication signal quality evaluation index value between each hotspot high-frequency position in the preset area and different base station setting positions according to the actual communication performance information and the probability distribution information, and switching the connection state between the terminal device and the base station according to the comprehensive communication signal quality evaluation index value.
2. The method of claim 1, wherein the method comprises: in step S1, detecting the strength distribution information of the hotspot signal in the predetermined area, so as to determine the high-frequency location of the hotspot existing in the predetermined area specifically includes,
step S101, dividing the preset area into a plurality of sub-areas, and detecting hotspot signal intensity amplitude distribution data in the sub-areas;
step S102, carrying out filtering and noise reduction processing on the hotspot signal intensity amplitude distribution data, and correspondingly forming a plurality of sub-area hotspot signal intensity plane distribution maps according to the result of the filtering and noise reduction processing;
step S103, splicing the plurality of sub-region hotspot signal intensity plane distribution maps to form a hotspot signal intensity overall distribution map related to the preset region, and determining a hotspot high-frequency position existing in the preset region according to the hotspot signal intensity overall distribution map.
3. The method of claim 2, wherein the method comprises: in step S1, the dividing the preset region into a plurality of sub-regions, and detecting the hotspot signal intensity amplitude distribution data inside the sub-regions includes,
dividing the preset area into a plurality of sub-areas with the same shape and area, and carrying out full-area scanning detection on the sub-areas so as to obtain hotspot signal intensity amplitude distribution data in the sub-areas;
alternatively, the first and second electrodes may be,
in step S102, the hotspot signal intensity plane distribution maps of a plurality of sub-areas are spliced to form a hotspot signal intensity overall distribution map about the predetermined area, and then according to the hotspot signal intensity overall distribution map, the specific determination of the high-frequency position of the hotspot existing in the predetermined area includes,
step S1021, carrying out hot spot signal intensity smoothing processing on the edge area of the sub-area hot spot signal intensity plane distribution diagram, and splicing the sub-area hot spot signal intensity plane distribution diagram subjected to the hot spot signal intensity smoothing processing, so as to form a hot spot signal intensity overall distribution diagram related to the preset area;
step S1022, determining a distribution position of a hotspot signal intensity extremum existing in the preset region according to the overall hotspot signal intensity distribution map, and using the distribution position of the hotspot signal intensity extremum as the hotspot high-frequency position.
4. The method of claim 3, wherein the method comprises: in step S2, according to the hot spot high frequency location and the base station setting location, determining that the actual communication performance information of the terminal device accessing the corresponding base station at different locations in the preset area specifically includes,
step S201, determining a plurality of mobile communication characterization parameters in the preset area according to the high-frequency position of the hotspot and the setting position of the base station;
step S202, preprocessing the plurality of mobile communication characterization parameters so as to determine a plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions in the preset area;
step S203, according to a plurality of said comprehensive communication signal quality evaluation index values, constructing and forming a corresponding base station communication performance measurement matrix An*mWherein n represents the number of the base station setting positions, and m represents the number of the high-frequency positions of the hot spot.
5. The method of claim 4, wherein the inter-cell communication handover method based on the cooperative method comprises: in step S201, determining a plurality of mobile communication characterizing parameters in the preset area according to the high-frequency location of the hotspot and the setting location of the base station specifically includes,
according to the hotspot high-frequency position and the base station setting position, determining the strength of a radio-frequency signal transmitted by a base station in the preset area, the ratio of a carrier signal to an interference signal and the distance between mobile equipment and the base station, and taking the radio-frequency signal strength, the ratio of the carrier signal to the interference signal and the distance as a plurality of mobile communication characterization parameters;
in step S202, the pre-processing is performed on the mobile communication characterization parameters, so as to determine that the multiple integrated communication signal quality evaluation index values of the terminal device accessing the corresponding base station at different locations in the preset area specifically include,
carrying out weighted calculation processing on the strength of the radio frequency signal transmitted by the base station, the ratio of the carrier signal to the interference signal and the distance between the mobile equipment and the base station so as to determine a plurality of comprehensive communication signal quality evaluation index values of the terminal equipment accessing the corresponding base station at different positions;
in step S203, a corresponding base station communication performance measurement matrix a is constructed and formed according to a plurality of the integrated communication signal quality evaluation index valuesn*mSpecifically, the method comprises the following steps of,
taking all the comprehensive communication signal quality evaluation index values as matrix elements,thereby constructing and forming the base station communication performance measurement matrix An*mTherefore, the practical communication superiority and inferiority between the current position of the preset area and the base station are measured through the matrix.
6. The method of claim 4, wherein the inter-cell communication handover method based on the cooperative method comprises: in step S202, the preprocessing the mobile communication characterizing parameters specifically includes obtaining, according to the mobile communication characterizing parameters, a radio frequency signal strength received by the mobile device and a data transmission downlink speed of the mobile device, and correcting, by using the radio frequency signal strength and the data transmission downlink speed, a plurality of comprehensive communication signal quality evaluation values of the terminal device accessing to corresponding base stations at different locations, and the specific process includes:
firstly, the strength E of the radio frequency signal received by the mobile equipment is determined according to the strength of the radio frequency signal transmitted by the base station and the distance between the mobile equipment and the base station by using the following formula (1)
In the above formula (1), E represents the strength of the rf signal received by the mobile device, W represents the strength of the rf signal transmitted by the base station, μfDenotes the transmit antenna gain factor, μ, of the base stationjThe method comprises the steps of representing a receiving antenna gain coefficient of the mobile equipment, representing the wavelength of a transmitting signal of a base station by lambda, representing the distance between the mobile equipment and the base station by d, representing a path loss coefficient of a radio frequency signal transmitted by the base station by r, and representing a circumference ratio by pi;
secondly, the data transmission downlink speed V of the mobile equipment is determined by using the following formula (2)
In the above formula (2), V represents data transmission of the mobile deviceDownlink speed, M represents the number of transmitting antennas of the base station, K represents the total number of positions to which the terminal device moves, AiRepresents the channel matrix between the terminal device and the base station when the terminal device moves to the ith position, and i is 1, 2, 3, …, K, PiRepresenting the Rice factor between the terminal equipment and the base station when the terminal equipment moves to the ith position, and tr () representing the rank calculation of the matrix;
thirdly, using the following formula (3), determining a correction value σ for correcting a plurality of integrated communication signal quality evaluation values of the terminal device accessing the corresponding base station at different positions
And fourthly, adding the correction value sigma to each comprehensive communication signal quality evaluation value of the original terminal equipment accessed to the corresponding base station at different positions, thereby realizing the correction of the comprehensive communication signal quality evaluation value.
7. The method of claim 5, wherein the inter-cell communication handover method based on the cooperative method comprises: in step S3, the probability distribution information for determining that the high frequency locations of different hotspots in the predetermined area access the same base station specifically includes,
step S301, determining a base station communication performance measurement matrix An*mCosine similarity values between every two different row vectors are used as similarity values between every two high-frequency positions of different hot spots;
step S302, the cosine similarity value is used as a matrix element, so that a similarity matrix S is constructed and formedm*mThereby passing through the similarity matrix Sm*mAnd representing probability distribution information of different hot spot high-frequency positions accessed to the same base station.
8. The method of claim 7, wherein the inter-cell communication handover method based on the cooperative manner is as follows: in step S4, determining a comprehensive communication signal quality evaluation index value between each hotspot high-frequency position in the preset area and different base station setting positions according to the actual communication performance information and the probability distribution information specifically includes,
step S401A, determining a base station communication performance measurement matrix An*mWith the similarity matrix Sm*mAnd recording the product result as a matrix Rn*m；
Step S402A, converting the matrix Rn*mThe ith row vector (r)i1，ri2，ri3，…，rim) And (3) as an integrated communication signal quality evaluation index value between each hotspot high-frequency position and different base station setting positions, wherein i is 1, 2, 3, …, n.
9. The method of claim 8, wherein the inter-cell communication handover method based on the cooperative manner is as follows: in step S4, the switching the connection status between the terminal device and the base station according to the integrated communication signal quality evaluation index value specifically includes,
step S401B, evaluating the index value (r) of the quality of the integrated communication signali1，ri2，ri3，…，rim) All elements in the sequence are arranged in a descending order, so that a sequence with all element values from high to low is obtained, and the larger the element value in the sequence is, the higher the communication reliability between the current hotspot high-frequency position and the corresponding base station is;
step S402B, according to the sequence, the terminal device is switched to connect to the base station with the highest communication reliability.
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