CN102118188A - GSM (Global System for Mobile communications) repeater capable of obtaining corresponding frequency hopping frequency point by utilizing frequency locking - Google Patents
GSM (Global System for Mobile communications) repeater capable of obtaining corresponding frequency hopping frequency point by utilizing frequency locking Download PDFInfo
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- CN102118188A CN102118188A CN2009102451974A CN200910245197A CN102118188A CN 102118188 A CN102118188 A CN 102118188A CN 2009102451974 A CN2009102451974 A CN 2009102451974A CN 200910245197 A CN200910245197 A CN 200910245197A CN 102118188 A CN102118188 A CN 102118188A
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Abstract
The invention relates to a GSM (Global System for Mobile communications) repeater capable of selectively amplifying signals and obtaining a plurality of frequency hopping cell frequency points by utilizing frequency locking. The GSM repeater comprises a coupler, a duplexer, low-noise amplifiers, frequency selectors, power amplifiers and an antenna, wherein an uplink low-noise amplifier, an uplink frequency selector and an uplink power amplifier are sequentially connected to form an uplink; a downlink low-noise amplifier, a downlink frequency selector and a downlink power amplifier are sequentially connected to form a downlink; the coupling end of the coupler is connected with a radio frequency input end of a frequency hopping selection controller; and an I/O (Input/Output) interface of the frequency hopping selection controller is respectively connected with the I/O interfaces of an uplink frequency selector and a downlink frequency selector. The GSM repeater has a simple integrated structure and higher usage safety, is designed scientifically and reasonably, and can improve the wireless network quality, increase the utilization ratio of network frequency points and obtain frequency locking cell frequency points accurately.
Description
Technical field
The invention belongs to domain of communication equipment, especially a kind ofly use frequency locking and obtain the GSM repeater of corresponding frequency hopping frequency.
Background technology
Repeater (repeater) is a kind of radio transmission transferring equipment, and it plays the effect that signal strengthens in the wireless communication transmissions process.The basic function of repeater is exactly a radiofrequency signal power intensifier.Existing repeater by donor antenna pickoff signals in existing overlay area,, is transmitted into the signal of filtering once more after power amplifier amplifies and treats the overlay area carrying out fabulous isolation with logical outer signal by band pass filter in down link.In the uplink path, the signal of the travelling carriage mobile phone in the overlay area is transmitted into corresponding base station with same working method after by up amplification link processing, thereby reaches the signal transmission of base station and mobile phone.Present expansion along with GSM digital mobile communication network capacity, in many areas, it is more and more nervous that frequency resource becomes, though and the frequency of utilization multiplex technique can greatly be alleviated frequency resource contradiction in short supply, increase number of users and power system capacity, but the deterioration of interference problem and network quality also is very tangible between the frequency that this technology causes, therefore introducing frequency hopping addresses the above problem, frequency hopping is one of the most frequently used spread spectrum mode, and it is a kind of carrier frequency of receiving-transmitting sides transmission signals is carried out Discrete Change according to predetermined rule a communication mode specifically.Utilize the characteristics of frequency hopping frequency diversity and interference diversity, can improve network quality, reduce artificial disturbance, strengthen the fail safe of using, and under the soft congested situation about not rising of network, can guarantee littler channeling degree, reduce influence again as far as possible to network quality.The GSM network optimization equipment, particularly repeater are indispensable in network as the important supplement of GSM networking base station, because frequency hopping is introduced in the base station, so in networking, the radiofrequency signal repeater also must adapt to frequency hopping.At present at the base station of using frequency hopping, because the same area has a plurality of cell signals, the repeater can't obtain the frequency hopping frequency point information of a plurality of sub-districts, also can't selectively carry out selectivity at certain subdistrict frequency point group amplifies, and it adopts the frequency to a fixed cells to amplify usually, thereby has influenced the effect and the frequency utilance of GSM network use frequency hopping.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, design science is reasonable, can improve quality of wireless network, improve wireless frequency utilance, safety in utilization is higher, can accurately obtain a plurality of neighbor cell frequency hopping frequencies, thereby can select the repeater of frequency hopping sub-district.
The present invention solves its technical problem and is achieved through the following technical solutions:
Advantage of the present invention and beneficial effect are:
1. this use frequency locking and the GSM repeater that obtains corresponding frequency hopping frequency are by up low noise amplifier, up frequency-selector and ascending power amplifier are formed up link successively, descending low noise amplifier, down frequency selection device and downlink power amplifier are formed down link successively, on, the two ends of down link connect two duplexers respectively, duplexer connects antenna, but wherein between frequency-selector and coupler, be connected with a frequency hopping selection control, make the repeater can obtain a plurality of neighbor cell frequency hopping information accurately, the different districts signal is carried out selectivity amplify, improved the quality of wireless network.
2. the frequency locking operation with a plurality of base station cells is realized in this use frequency locking and the GSM repeater that obtains corresponding frequency hopping frequency, has strengthened the alternative and the frequency utilance of signal transmission.
3. overall structure of the present invention is simple, design science is reasonable, can improve quality of wireless network, effectively reduces repeating signal to the interference between base station interference and the frequency, safety in utilization is higher, is a kind of GSM repeater that can obtain corresponding frequency hopping frequency by frequency locking.
Description of drawings
Fig. 1 is theory diagram of the present invention (a frequency hopping selection control);
Fig. 2 is theory diagram of the present invention (frequency locking module and microcontroller MCU).
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of GSM frequency hopping repeater of using the frequency hopping selection control, by coupler, first duplexer, second duplexer, up low noise amplifier, up frequency-selector, the ascending power amplifier, descending low noise amplifier, the down frequency selection device, downlink power amplifier and antenna constitute, one output of coupler connects first duplexer, one input, one output of first duplexer connects the input of up low noise amplifier, the output of up low noise amplifier connects an input of up frequency-selector, the output of up frequency-selector connects the ascending power amplifier input terminal, the output of ascending power amplifier connects the input of second duplexer, second duplexer connects antenna, the output of second duplexer connects the input of descending low noise amplifier, the output of descending low noise amplifier connects an input of down frequency selection device, the output of down frequency selection device connects the input of downlink power amplifier, the output of downlink power amplifier connects the input of first duplexer, wherein the coupled end of coupler connects the rf inputs of a frequency hopping selection control, and the I/O interface of this frequency locking module is connected with the I/O interface of up frequency-selector and down frequency selection device respectively.
Above-mentioned coupler is CMTCP900, first duplexer is DUP942, second duplexer is DUP942, up low noise amplifier is LNA897, descending low noise amplifier is LNA897, and up frequency-selector is H4NCS945, and the down frequency selection device is H4NCS945, the ascending power amplifier is PA945, and downlink power amplifier is PA946.
Above-mentioned frequency hopping selection control also can be made of (as accompanying drawing 2) frequency locking module and microcontroller, this microcontroller can be arm7, C8051f; Frequency locking module can be made of radio frequency chip and digital baseband chip, or gsm module; Radio frequency chip is QS500 or QS1000, and digital baseband chip is SC6600, and gsm module is CMT606.
The radiofrequency signal that above-mentioned coupler receives can be wireless mode from signal of base station, also can be by the signal of wired mode from base station coupling.
Operation principle of the present invention is:
Radiofrequency signal is coupled to frequency hopping controller by coupler with radiofrequency signal and carries out demodulation and decoding and analysis, frequency locking obtains the relevant information of a plurality of frequency hoppings sub-district, control up frequency-selector and down frequency selection device by sending control signal, by up frequency-selector and down frequency selection device the selectivity of carrying out frequency hopping from the radiofrequency signal of up low noise amplifier and the transmission of descending low noise amplifier is passed through, realized of the frequency hopping amplification of GSM frequency hopping repeater radiofrequency signal.
Claims (8)
- One kind can frequency locking and obtain the GSM repeater of corresponding frequency hopping frequency, by coupler, duplexer, low noise amplifier, frequency-selector, power amplifier and antenna constitute, up low noise amplifier, up frequency-selector and ascending power amplifier connect to form up link successively, descending low noise amplifier, down frequency selection device and downlink power amplifier connect to form down link successively, one output of coupler, the input of up low noise amplifier and the output of downlink power amplifier are connected with first duplexer respectively, the output of ascending power amplifier, the input of descending low noise amplifier and antenna are connected with second duplexer respectively, it is characterized in that: the coupled end of coupler connects the rf inputs of a frequency hopping selection control, and the I/O interface of this frequency hopping selection control is connected with the I/O interface of up frequency-selector and down frequency selection device respectively.
- 2. use frequency locking according to claim 1 and obtain the GSM repeater of corresponding frequency hopping frequency, it is characterized in that: described coupler is CMTCP900, first duplexer is DUP942, second duplexer is DUP942, and up low noise amplifier is LNA897, and descending low noise amplifier is LNA897, up frequency-selector is H4NCS945, the down frequency selection device is H4NCS945, and the ascending power amplifier is PA945, and downlink power amplifier is PA946.
- 3. use frequency locking according to claim 1 and obtain the GSM repeater of corresponding frequency hopping frequency, it is characterized in that: described frequency hopping selection control is CETP200.
- 4. use frequency locking according to claim 1 and obtain the GSM repeater of corresponding frequency hopping frequency, it is characterized in that: described frequency hopping selection control is made of frequency locking module and microcontroller.
- 5. use frequency locking according to claim 4 and obtain the GSM repeater of corresponding frequency hopping frequency, it is characterized in that: described microcontroller is arm7, C8051f.
- 6. use frequency locking according to claim 4 and obtain the GSM repeater of corresponding frequency hopping frequency, it is characterized in that: described frequency locking module is for to be made of radio frequency chip and digital baseband chip, or gsm module.
- 7. use frequency locking according to claim 6 and obtain the GSM repeater of corresponding frequency hopping frequency, it is characterized in that: described radio frequency chip is QS500 or QS1000, and digital baseband chip is SC6600, and gsm module is CMT606.
- 8. use frequency locking according to claim 1 and obtain the GSM repeater of corresponding frequency hopping frequency, it is characterized in that: the radiofrequency signal that described coupler receives is that wireless mode is from signal of base station, or by the signal of wired mode from base station coupling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102451974A CN102118188A (en) | 2009-12-30 | 2009-12-30 | GSM (Global System for Mobile communications) repeater capable of obtaining corresponding frequency hopping frequency point by utilizing frequency locking |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102325389A (en) * | 2011-10-10 | 2012-01-18 | 徐兆东 | GSM micropower repeater of automatic locking base station BCCH (Broadcast Control Channel) |
| CN102664673A (en) * | 2012-04-25 | 2012-09-12 | 四川邮科通信技术有限公司 | Digital processing system and method applied to repeater of global system for mobile communication (GSM) frequency hopping network |
| CN104345770A (en) * | 2013-07-26 | 2015-02-11 | 联发科技股份有限公司 | Clock generator, clock generating method and electronic device |
| WO2021136174A1 (en) * | 2019-12-31 | 2021-07-08 | 京信网络系统股份有限公司 | Method, apparatus and device for selectively processing communication signals, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201039168Y (en) * | 2007-04-24 | 2008-03-19 | 福建三元达通讯有限公司 | A self-adapted mobile communication repeater |
| CN201188615Y (en) * | 2008-04-25 | 2009-01-28 | 天津赛乐电子技术有限公司 | GSM frequency-hopping straightly-discharging station using baseband decoding mode |
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2009
- 2009-12-30 CN CN2009102451974A patent/CN102118188A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039168Y (en) * | 2007-04-24 | 2008-03-19 | 福建三元达通讯有限公司 | A self-adapted mobile communication repeater |
| CN201188615Y (en) * | 2008-04-25 | 2009-01-28 | 天津赛乐电子技术有限公司 | GSM frequency-hopping straightly-discharging station using baseband decoding mode |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102325389A (en) * | 2011-10-10 | 2012-01-18 | 徐兆东 | GSM micropower repeater of automatic locking base station BCCH (Broadcast Control Channel) |
| CN102325389B (en) * | 2011-10-10 | 2013-08-14 | 徐兆东 | GSM micropower repeater of automatic locking base station BCCH (Broadcast Control Channel) |
| CN102664673A (en) * | 2012-04-25 | 2012-09-12 | 四川邮科通信技术有限公司 | Digital processing system and method applied to repeater of global system for mobile communication (GSM) frequency hopping network |
| CN102664673B (en) * | 2012-04-25 | 2014-12-31 | 四川邮科通信技术有限公司 | Digital processing system and method applied to repeater of global system for mobile communication (GSM) frequency hopping network |
| CN104345770A (en) * | 2013-07-26 | 2015-02-11 | 联发科技股份有限公司 | Clock generator, clock generating method and electronic device |
| US10545530B2 (en) | 2013-07-26 | 2020-01-28 | Mediatek Inc. | Apparatus and method for controlling controllable clock source to generate clock signal with frequency transition |
| WO2021136174A1 (en) * | 2019-12-31 | 2021-07-08 | 京信网络系统股份有限公司 | Method, apparatus and device for selectively processing communication signals, and storage medium |
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Owner name: TIANJIN SAILE XINCHUANG COMMUNICATION TECHNOLOGY C Free format text: FORMER OWNER: TIANJIN SAILE ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20121212 |
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Effective date of registration: 20121212 Address after: 300384 Tianjin Huayuan Industrial Park Xiqing district (outside the outer ring road No. 28 (SEA) Haitai Yi International Industrial Base) 4 door 401 seat C Applicant after: Tianjin Cellular Innovation Communication Technology Co., Ltd. Address before: 300384 Tianjin Huayuan Industrial Park Xiqing district (outside the outer ring road No. 28 (SEA) Haitai Yi International Industrial Base) 4 door 401 seat C Applicant before: Tianjin Saiyue Electronic Technology Co.,Ltd. |
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Application publication date: 20110706 |