CN105050084A - Wireless service adaptive service system - Google Patents
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- CN105050084A CN105050084A CN201510347377.9A CN201510347377A CN105050084A CN 105050084 A CN105050084 A CN 105050084A CN 201510347377 A CN201510347377 A CN 201510347377A CN 105050084 A CN105050084 A CN 105050084A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 49
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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Abstract
The invention relates to a wireless service adaptive service system. The wireless service adaptive service system is additionally provided with an adaptive matching channel, monitors and matches full-frequency section signals by using a user signal monitoring unit, a frequency section acquiring unit, and a user signal matching unit, solves a problem of conflict of frequency sections by a service channel negotiation unit, achieves an anti-interference function, and improves signal transmission safety and security by user identification code verification.
Description
Technical Field
The invention relates to the field of wireless communication, in particular to a wireless service self-adaptive service system.
Background
The current wireless communication field is developed at a high speed, and users put higher requirements on confidentiality and anti-interference of information transmission. The trend of wireless communication in a full frequency range is that, for a service provider providing service support to all target users, the target users may be located in various frequency ranges, and there may be interference between users located in different frequency ranges, and in order to provide users with faster and more accurate service, the service provider needs to be able to quickly and automatically monitor and match an access application frequency range where the target user is located, and ensure the security of communication.
The existing method can only select one frequency interval by default for communication, has more functional units, large circuit power consumption, large size and poor reliability, is difficult to monitor the signal frequency interval and judge whether the frequency interval is occupied or interfered, and cannot automatically search and utilize the idle frequency interval for communication.
Disclosure of Invention
The purpose of the invention is realized by the following technical scheme.
According to an embodiment of the present invention, a wireless service adaptive service system is provided, which includes an LTE array antenna, a user access pre-noise cancellation unit, a service providing channel, an adaptive matching channel, and a baseband signal control unit, wherein,
the LTE array antenna is used for transmitting and receiving omni-directional signals in a service area;
the user access pre-denoising unit is used for pre-denoising signals sent and received by the LTE array antenna;
the service providing channel is used for providing services for the target user according to the user signal frequency matching result of the self-adaptive matching channel;
the self-adaptive matching channel is used for monitoring and frequency matching of user signals; and
the baseband signal control unit is used for outputting a baseband control signal to the main control supporting unit of the self-adaptive matching channel.
According to an embodiment of the present invention, the adaptive matching channel specifically includes: the device comprises a first predistortion power amplifier unit, a user signal monitoring unit, a user identification code verification unit, a frequency interval capturing unit, a user signal matching unit and a main control supporting unit.
According to the embodiment of the invention, the user signal monitoring unit carries out frequency interval spread search on the signal amplified by the first pre-distortion power amplification unit, and monitors the signal in the frequency interval; when the signal intensity is detected in a certain preset frequency interval, whether the signal is a useful signal is judged, the frequency interval position of the useful signal is marked, and the frequency interval position information and the user wireless signal are output to the input end of a next-stage frequency interval capturing unit; the user signal monitoring unit receives confirmation signals of the verification results of the user signal matching unit and the user identification code verification unit, and if the confirmation of the verification results of the later-stage user signal matching unit and the user identification code verification unit that the frequency interval is captured is finished, the monitoring is finished; if the frequency interval is not captured, the user signal monitoring unit continues monitoring; and the confirmation signal is accessed to the control end of the user signal monitoring unit by the user signal matching unit and the user identification code verification result.
According to the embodiment of the invention, the input end of the user signal matching unit is connected to the output end of the previous-stage frequency interval capturing unit, and the signal subjected to frequency elimination by the previous-stage frequency interval capturing unit is subjected to amplitude detection to preliminarily judge whether the signal is interference or a useful signal; if the signal is a useful signal, entering a next main control supporting unit; if the interference signal is judged, confirming the result to a user signal monitoring unit; the confirmation output end of the user signal matching unit is connected to the control input end of the preceding user signal monitoring unit; the user signal matching unit accesses the frequency interval information which is judged to be a useful signal to the main control supporting unit, and the output end of the user signal matching unit is connected to the input end of the next-stage main control supporting unit; when the verification result of the user identification code verification unit is 'registered user' and the detection result of the user signal matching unit is 'useful signal', it indicates that the frequency interval has been captured.
According to the embodiment of the present invention, the service providing channel specifically includes: the device comprises a second predistortion power amplifier unit, an orthogonal frequency conversion unit, an in-phase frequency conversion unit, a frequency synthesis unit, an orthogonal phase adjusting unit, an in-phase and orthogonal automatic gain adjusting unit, an equalizing unit, an in-phase gain adjustable amplifying unit, an orthogonal gain adjustable amplifying unit, an in-phase AD conversion unit and an orthogonal AD conversion unit.
According to the embodiment of the present invention, the wireless service adaptive service system further includes a service channel negotiation unit, configured to determine a service load of a frequency interval in which a useful signal is located according to a monitoring result of a user signal monitoring unit of the adaptive matching channel, and negotiate with a user to switch an idle frequency interval when the service is overloaded.
The wireless service self-adaptive service system is additionally provided with the self-adaptive matching channel, the user signal monitoring unit, the frequency interval capturing unit and the user signal matching unit are adopted to monitor and match signals in the full frequency interval, the problem of frequency interval use conflict is solved by arranging the service channel negotiation unit, the anti-interference function is realized, and the user identification code verification is adopted, so that the safety and the confidentiality of signal transmission are enhanced.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic structure of a wireless service adaptive service system according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
According to an embodiment of the present invention, a wireless service adaptive service system is provided, as shown in fig. 1, the wireless service adaptive service system includes an LTE array antenna, a user access pre-denoising unit, a service providing channel, an adaptive matching channel, a baseband signal control unit, and a service channel negotiation unit, wherein,
the LTE array antenna is used for transmitting and receiving omni-directional signals in a service area;
the user access pre-denoising unit is used for pre-denoising signals sent and received by the LTE array antenna;
the service providing channel is used for providing services for the target user according to the user signal frequency matching result of the self-adaptive matching channel;
the self-adaptive matching channel is used for monitoring and frequency matching of user signals;
the baseband signal control unit is used for outputting a baseband control signal to the main control supporting unit of the self-adaptive matching channel; and
the service channel negotiation unit is used for judging the service load of the frequency interval where the useful signal is located according to the monitoring result of the user signal monitoring unit of the self-adaptive matching channel and negotiating with the user to switch the idle frequency interval when the service is overloaded.
According to the implementation mode of the invention, the input end of the wireless service self-adaptive service system is connected to an LTE array antenna through a broadband user access pre-denoising unit, the LTE array antenna accesses a received user wireless signal into the pre-denoising unit, and the signal enters a service channel of the wireless service self-adaptive service system after being subjected to pre-denoising; the LTE array antenna and the user access pre-denoising unit are ultra-wideband, and the frequency interval range exceeds more than several GHz, so that the wireless service self-adaptive service system can simultaneously receive signals of a plurality of frequency intervals, and the aim of coexistence of the frequency intervals is fulfilled in a wide frequency interval range.
According to the embodiment of the present invention, the service providing channel specifically includes: the device comprises a second predistortion power amplifier unit, an orthogonal frequency conversion unit, an in-phase frequency conversion unit, a frequency synthesis unit, an orthogonal phase adjusting unit, an in-phase and orthogonal automatic gain adjusting unit, an equalizing unit, an in-phase gain adjustable amplifying unit, an orthogonal gain adjustable amplifying unit, an in-phase AD conversion unit and an orthogonal AD conversion unit;
the adaptive matching channel specifically includes: the system comprises a first predistortion power amplifier unit, a user signal monitoring unit, a user identification code verification unit, a frequency interval capturing unit, a user signal matching unit and a main control supporting unit; wherein,
the user wireless signal accessed by the user access pre-denoising unit is sent to the input ends of the second pre-distortion power amplification unit and the first pre-distortion power amplification unit, the output end of the first pre-distortion power amplification unit is connected to the input end of the user signal monitoring unit, and the control port of the user signal monitoring unit is correspondingly connected to the input end of the user identification code verification unit, the input end of the service channel negotiation unit and the output end of the user signal matching unit; the output end of the service channel negotiation unit is connected with the main control supporting unit; the output end of the user signal monitoring unit is connected to the input end of the frequency interval capturing unit, and the output end of the frequency interval capturing unit is connected to the input end of the user signal matching unit and the input end of the user identification code verifying unit; one output end of the user signal matching unit controls the user signal monitoring unit, and the other output end of the user signal matching unit outputs the user signal monitoring unit to the main control supporting unit; the output end of the user identification code verification unit is connected with a user signal monitoring unit; the other input end of the main control supporting unit is connected to a baseband signal control unit of the wireless service self-adaptive service system, and the output end of the main control supporting unit is respectively connected to the corresponding control input ends of a second predistortion power amplification unit, a frequency synthesis unit, an in-phase frequency conversion unit, an orthogonal frequency conversion unit, an equalization unit, an in-phase gain adjustable amplification unit, an orthogonal gain adjustable amplification unit, an in-phase AD conversion unit and an orthogonal AD conversion unit in a service providing channel; the output end of the second predistortion power amplification unit is simultaneously connected with the in-phase frequency conversion unit and the quadrature frequency conversion unit, the local oscillator access of the in-phase frequency conversion unit is provided by the output end of the frequency synthesis unit, the local oscillator access of the quadrature frequency conversion unit is provided by the output end of the quadrature phase adjustment unit, and the in-phase and quadrature two paths generated at the moment are respectively connected with the in-phase and quadrature automatic gain adjustment unit, the equalization unit, the in-phase gain adjustable amplification unit, the quadrature gain adjustable amplification unit, the in-phase AD conversion unit and the quadrature AD conversion unit in sequence.
According to the embodiment of the invention, the first predistortion power amplification unit of the adaptive matching channel works in a very wide frequency range, simultaneously performs nonlinear distortion compensation and amplification on a plurality of signals in a plurality of frequency ranges after a user accesses the predistortion unit to perform predistortion, and outputs the amplified signals to the input end of the next-stage user signal monitoring unit.
According to the embodiment of the invention, the user signal monitoring unit carries out frequency interval pervasion search on the signal amplified by the first pre-distortion power amplification unit, searches a plurality of frequency intervals by adopting an encrypted frequency interval interspersing algorithm, and monitors the signal on the frequency intervals; when the signal intensity is detected in a certain preset frequency interval, whether the signal is a useful signal is judged, the frequency interval position of the useful signal is marked, and the frequency interval position information and the user wireless signal are output to the input end of a next-stage frequency interval capturing unit; the user signal monitoring unit receives confirmation signals of the verification results of the user signal matching unit and the user identification code verification unit, and if the confirmation of the verification results of the later-stage user signal matching unit and the user identification code verification unit that the frequency interval is captured is finished, the monitoring is finished; if the frequency interval is not captured, the user signal monitoring unit continues monitoring; and the confirmation signal is accessed to the control end of the user signal monitoring unit by the user signal matching unit and the user identification code verification result.
According to the embodiment of the invention, the frequency interval capturing unit eliminates signals outside the specified frequency interval according to the frequency interval position information, realizes the capturing of signals on a certain frequency interval, and outputs the user wireless signals and the frequency interval position information after the frequency elimination to the next stage; the input end of the frequency interval capturing unit is connected to the output end of the previous stage user signal monitoring unit, and the output end of the frequency interval capturing unit is connected to the input end of the next stage user signal matching unit.
According to the embodiment of the invention, the user identification code verification unit compares and verifies the output signal of the frequency interval capturing unit with the preset registered user identification code, and outputs the verification result to the user signal monitoring unit.
According to the embodiment of the invention, the input end of the user signal matching unit is connected to the output end of the previous-stage frequency interval capturing unit, and the signal subjected to frequency elimination by the previous-stage frequency interval capturing unit is subjected to amplitude detection to preliminarily judge whether the signal is interference or a useful signal; if the signal is a useful signal, entering a next main control supporting unit; if the interference signal is judged, confirming the result to a user signal monitoring unit; the confirmation output end of the user signal matching unit is connected to the control input end of the preceding user signal monitoring unit; the user signal matching unit accesses the frequency interval information which is judged to be the useful signal to the main control supporting unit, and the output end of the user signal matching unit is connected to the input end of the main control supporting unit at the next stage. When the verification result of the user identification code verification unit is 'registered user' and the detection result of the user signal matching unit is 'useful signal', it indicates that the frequency interval has been captured.
According to the embodiment of the invention, the main control supporting unit configures a control signal according to the control information of the baseband signal control unit, the judgment result of the previous-stage user signal matching unit and the switching signal of the service channel negotiation unit; and then outputting a control signal to configure the working parameters of each unit of the service providing channel.
According to the embodiment of the present invention, the service channel negotiation unit is configured to determine a service load of a frequency interval in which a useful signal is located according to a monitoring result of the user signal monitoring unit of the adaptive matching channel, and send a frequency interval switching request to a user when a service of the frequency interval in which the user is located is overloaded, where the request protects a busy current service frequency interval and an assigned pre-switched idle frequency interval, and after the user responds to the request, the service channel negotiation unit simultaneously sends a frequency switching signal to the main control supporting unit, and indicates that a service providing channel provides a service in a new frequency interval.
According to the embodiment of the invention, the second predistortion power amplifier unit of the service providing channel configures the working frequency range of the second predistortion power amplifier unit according to the control signal accessed by the main control supporting unit in the self-adaptive matching channel, the control end of the second predistortion power amplifier unit is connected to the output end of the corresponding main control supporting unit, the nonlinear distortion compensation and low noise amplification are carried out on the radio frequency access signal which is subjected to the pre-noise elimination processing by the user access pre-noise elimination unit, and the output end of the second predistortion power amplifier unit is connected with the input ends of the orthogonal frequency conversion unit and the in-phase frequency conversion unit in two paths.
According to the embodiment of the invention, the frequency synthesis unit configures clock signals required by an orthogonal frequency conversion unit and an in-phase frequency conversion unit according to a master control support unit access signal, a control input end of the frequency synthesis unit is connected to a corresponding master control support unit output end, an output clock of the frequency synthesis unit, and one path of signal is directly accessed to an input end of the in-phase frequency conversion unit; the other path is connected with the orthogonal frequency conversion unit through the orthogonal phase adjusting unit; and the frequency synthesis unit has a clock output to the working clock input ends of the in-phase AD conversion unit and the quadrature AD conversion unit (shown by dotted arrows in figure 1).
According to an embodiment of the invention, the quadrature phase adjustment unit phase shifts the access clock by ninety degrees, and the output is connected to the input of the quadrature frequency conversion unit.
According to the embodiment of the invention, the in-phase frequency conversion unit and the quadrature frequency conversion unit work in a very wide frequency range, i.e. a plurality of frequency ranges, the local oscillation input ends of the in-phase frequency conversion unit and the quadrature frequency conversion unit are connected to the output ends of the frequency synthesis unit and the quadrature phase adjustment unit, and the radio frequency input ends of the in-phase frequency conversion unit and the quadrature frequency conversion unit are connected to the output end of the second predistortion power amplification unit of the previous stage. The output ends of the in-phase frequency conversion unit and the orthogonal frequency conversion unit are connected to the input end of the next-stage in-phase and orthogonal automatic gain adjustment unit.
According to the embodiment of the invention, the in-phase and quadrature automatic gain adjusting unit respectively adjusts the phase and the gain of the in-phase and quadrature signals after the frequency conversion is carried out by the previous stage in-phase frequency conversion unit and the quadrature frequency conversion unit, and outputs the adjusted result to the input end of the next stage of the equalizing unit.
According to the embodiment of the invention, the equalization unit consists of two parallel FIR filters, the working frequency intervals of the two FIR filters are the same, and the central frequency of the working frequency interval can be configured as required and is controlled by the output signal corresponding to the main control support unit; the equalizing unit performs equalizing filtering on the in-phase and quadrature signals of which the front stage is adjusted, wherein the input ends of the in-phase and quadrature signals of the equalizing unit are respectively connected to the corresponding in-phase and quadrature output ends of the previous stage, and the in-phase and quadrature output ends are connected to the input end of the corresponding gain-adjustable amplifying unit of the next stage.
According to the embodiment of the invention, the in-phase gain adjustable amplification unit and the quadrature gain adjustable amplification unit are amplifiers with adjustable gain, and the gain adjusting signals are provided by the output ports of the corresponding main control support units; the input ends of the two gain adjustable amplification units are respectively connected to the corresponding in-phase output and quadrature output of the previous stage of equalization unit, and the output ends of the two gain adjustable amplification units are respectively connected to the input ends of the in-phase AD conversion unit and the quadrature AD conversion unit of the next stage.
According to the embodiment of the invention, the sampling clocks of the in-phase AD conversion unit and the quadrature AD conversion unit are provided by a frequency synthesis unit, the in-phase AD conversion unit and the quadrature AD conversion unit respectively digitize the in-phase signal and the quadrature signal output by the gain-adjustable amplification unit of the previous stage, and output the digitized digital signals, the input ends of the in-phase AD conversion unit and the quadrature AD conversion unit are connected to the output end of the gain-adjustable amplification unit of the previous stage, and the output ends of the in-phase AD conversion unit and the quadrature AD conversion unit are connected to the output end of the wireless service adaptive service system.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A wireless service adaptive service system including an LTE array antenna, a user access pre-noise cancellation unit, a service providing channel, an adaptive matching channel, and a baseband signal control unit, wherein,
the LTE array antenna is used for transmitting and receiving omni-directional signals in a service area;
the user access pre-denoising unit is used for pre-denoising signals sent and received by the LTE array antenna;
the service providing channel is used for providing services for the target user according to the user signal frequency matching result of the self-adaptive matching channel;
the self-adaptive matching channel is used for monitoring and frequency matching of user signals; and
the baseband signal control unit is used for outputting a baseband control signal to the main control supporting unit of the self-adaptive matching channel.
2. The system of claim 1, wherein the adaptive matching channel comprises: the device comprises a first predistortion power amplifier unit, a user signal monitoring unit, a user identification code verification unit, a frequency interval capturing unit, a user signal matching unit and a main control supporting unit.
3. The system of claim 2, wherein the subscriber signal monitoring unit performs a frequency interval spread search on the signal amplified by the first predistortion power amplifying unit, and monitors the signal in the frequency interval; when the signal intensity is detected in a certain preset frequency interval, whether the signal is a useful signal is judged, the frequency interval position of the useful signal is marked, and the frequency interval position information and the user wireless signal are output to the input end of a next-stage frequency interval capturing unit; the user signal monitoring unit receives confirmation signals of the verification results of the user signal matching unit and the user identification code verification unit, and if the confirmation of the verification results of the later-stage user signal matching unit and the user identification code verification unit that the frequency interval is captured is finished, the monitoring is finished; if the frequency interval is not captured, the user signal monitoring unit continues monitoring; and the confirmation signal is accessed to the control end of the user signal monitoring unit by the user signal matching unit and the user identification code verification result.
4. A system as claimed in claim 3, wherein the input terminal of the user signal matching unit is connected to the output terminal of the previous stage frequency range capturing unit, and the signal after frequency elimination by the previous stage frequency range capturing unit is subjected to amplitude detection to preliminarily determine whether the signal is interference or a useful signal; if the signal is a useful signal, entering a next main control supporting unit; if the interference signal is judged, confirming the result to a user signal monitoring unit; the confirmation output end of the user signal matching unit is connected to the control input end of the preceding user signal monitoring unit; the user signal matching unit accesses the frequency interval information which is judged to be a useful signal to the main control supporting unit, and the output end of the user signal matching unit is connected to the input end of the next-stage main control supporting unit; when the verification result of the user identification code verification unit is 'registered user' and the detection result of the user signal matching unit is 'useful signal', it indicates that the frequency interval has been captured.
5. The system of claim 4, wherein the service providing path specifically includes: the device comprises a second predistortion power amplifier unit, an orthogonal frequency conversion unit, an in-phase frequency conversion unit, a frequency synthesis unit, an orthogonal phase adjusting unit, an in-phase and orthogonal automatic gain adjusting unit, an equalizing unit, an in-phase gain adjustable amplifying unit, an orthogonal gain adjustable amplifying unit, an in-phase AD conversion unit and an orthogonal AD conversion unit.
6. The system according to claim 5, wherein the wireless service adaptive service system further comprises a service channel negotiation unit, configured to determine a service load in a frequency interval where the useful signal is located according to a monitoring result of the user signal monitoring unit in the adaptive matching channel, and negotiate with the user to switch the idle frequency interval when the service is overloaded.
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| CN203942536U (en) * | 2014-07-14 | 2014-11-12 | 桂林电子科技大学 | Frequency spectrum detection distribution system based on ground digital television broadcast frequency range |
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| US20060019604A1 (en) * | 2002-06-20 | 2006-01-26 | Dekolink Wireless Ltd. | System and method for excluding narrow band noise from a communication channel |
| US7577403B1 (en) * | 2003-10-06 | 2009-08-18 | Rilling Kenneth F | Non-capture one-tuner smart antenna |
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Application publication date: 20151111 |