CN101106422B - Terminal synchronization method and device for TD-SCDMA system repeater - Google Patents
Terminal synchronization method and device for TD-SCDMA system repeater Download PDFInfo
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Abstract
To overcome the drawbacks of the prior art repeater that the setting location is limited, the original signal is destroyed, the GPS signal is needed and so on, the invention proposes a method and means that by using the wireless signal transmitted by the base station, and by utilizing characteristics window method to searching and determining the position of DwPTS, a primary synchronization of the repeater and the base station (so-called coarse synchronization) is realized; then, by the sliding correlation processing of SYNC-DL code, a chip-level synchronization of the repeater and the base station (so-called fine synchronization) is realized; then, by using the midamble codebook to estimate the channel impulse response of the repeater and obtaining the synchronization deviation estimation, the synchronization of the repeater and the base station below the chip level is realized, and thereby every function of the repeater is ensured to be realized successfully. Because the synchronization mode of the repeater in the invention is much like that of the mobile wireless terminal, the invention is called as a 'terminal synchronization'method. The repeater designed by using terminal synchronization method is also called as a 'terminal synchronizing repeater'. The terminal synchronizing repeater in the invention utilizes the terminal synchronization method of TD-SCDMA system, and thus the wireless communication between the network management and the repeater is very easy to be realized.
Description
Technical field
The present invention relates to terminal synchronization method and the device of repeater in the wirelessmobile communication system, specially refer to terminal synchronization method (claiming that again base band demodulating is synchronous) and the device of Time Division-Synchronous Code Division Multiple Access wirelessmobile communication system (referred to as the TD-SCDMA system) repeater.
Background technology
In wirelessmobile communication system, wireless signal is propagated between network and user terminal (referred to as UE) by base station (referred to as Node B).Yet because the impact of natural conditions, the zone that wireless signal covers can exist weak signal area or blind area.And to some remote districts and the few blind area of number of users, the cost that sets up the base station is too high, and economic benefit is uneconomical.Therefore, occurred a kind of cost lower and set up simple, and the equipment with small base station basic function, i.e. so-called repeater.The basic role of repeater in wirelessmobile communication system is that forward direction and reverse signal are amplified again, under the condition that does not increase base station number, has increased the area coverage of network, has reduced the blind area of wireless signal.
Obviously, in the TD-SCDMA system, the most basic function in repeater is to realize signal transmission between base station and the portable terminal, namely forward direction and reverse signal are amplified again, make portable terminal can receive in the larger context the signal of base station, equally, also make the base station can receive in the larger context the signal of portable terminal, thereby increase the area coverage of network, reduce the blind area of wireless signal.Meanwhile, for guaranteeing the smooth realization of repeater basic function, the repeater also must possess following functions:
1, receives the Operation and Maintenance information that webmaster sends;
2, receive the TD-SCDMA frame synchronizing signal that the base station down signal produces;
3, the corresponding uplink and downlink control in generation and base station sequential;
4, the normal operation of control uplink and downlink link;
5, the operating state of monitoring peripheral control circuit, and the result that will monitor reports webmaster.
As everyone knows, the TD-SCDMA system is a tdd systems, and each subframe comprises 7 conventional time slots, 3 special time slots and two time slot transfer points.For making the uplink and downlink signal smoothly, intactly pass through the repeater, the repeater must keep synchronized relation with the base station, to guarantee fast and accurately sending and receiving conversion.If repeater and base station step-out can make correctly restituted signal of UE, occur staggered time slot between the base station, even cause whole network paralysis.According to the time-division characteristic, as long as the repeater is implemented between first transfer point and second transfer point synchronously and only processes upward signal, between first transfer point of second transfer point and next subframe, only process downstream signal, just can avoid uplink and downlink two cover treatment systems to work simultaneously, realize the normal process to the uplink and downlink signal.Can therefore, can the repeater keep synchronous accurately with the base station, is the repeater, even the whole network key that work.
The method of existing techniques in realizing repeater and base station synchronization mainly contains two kinds, and a kind of to be called GPS synchronous, and another kind is called detection synchronizing.
For the synchronous mode of GPS, because domestic each base station signal and GPS are synchronous, be that phase difference between base station signal and the GPS pulse per second (PPS) trailing edge is invariable, GPS pulse per second (PPS) trailing edge and the phase difference of descending pilot frequency between the finish time are at first measured in the repeater, by the enable signal of adjustment repeater uplink and downlink switch and the phase difference between the GPS pulse per second (PPS) trailing edge, so that descending enable signal can be closed is descending, also namely determined the position of first transfer point when descending pilot frequency finishes.Because the repeater of the GPS method of synchronization can't demodulate baseband signal, second transfer point can only simply be defaulted as between TS3 and TS4 (perhaps other time slots), namely adopts the mode of acquiescence to determine second transfer point.The repeater of the GPS method of synchronization need install the GPS synchronizer additional, and the repeater must be arranged on the place of gps signal, so that the scope that arranges of repeater is restricted.In addition, if the base station is adjusted the phase place of signal, the repeater will reset the phase difference between GPS pulse per second (PPS) and the switch enable signal so, and as seen there is certain defective in its method of synchronization.
The detection method claims again the power detection method, and the method at first detects fast to radio-frequency power, and then the response time, compares detected value and threshold value, if detected value is higher than threshold value generally in nanosecond.Then explanation has signal to pass through, and opens immediately down link; If being lower than threshold value, detected value opens up link.Although the method is simple, owing to only can not tell the uplink and downlink signal according to the power detection value, is mainly used in the occasion of wired coupled modes, and can not be used in the occasion (as being used for the wireless discharging-directly station of outdoor cover) of wireless coupling mode.In addition, although the power response time very fast (reaching nanosecond), the enable signal of switch also may lag behind signal, and this will cause the damage of source signal, cause the index such as error vector level (referred to as EVM) to descend, serious even can make the terminal access failure.In addition, the method can only be judged according to the time span that signal passes through the position of two transfer points, and second transfer point of the method also can only adopt the mode of acquiescence to determine.
In addition, because the useful signal the coverage whether repeater can work and have influence on whole network, in order to guarantee the normal operation of network, network is in the urgent need to carrying out remote operation and maintenance to numerous repeaters, in time process the information such as fault alarm of repeater, and adjust as required the running parameter etc. of repeater.Because the repeater of prior art does not possess the ability of remote maintenance, it is safeguarded it can only is the mode that adopts on-site maintenance, inevitably cause the expensive and inefficient of maintenance.
The spreading rate of TD-SCDMA system is 1.2Mc/s, and the carrier frequency bandwidth is 1.6MHz, and the downlink information in the system and uplink information data are that the different time-gap in same frequency transmits.The subframe that in the TD-SCDMA system, the wireless data frame of 10ms is divided into two 5ms; there are 7 conventional time slots (to be respectively TS0～TS6 in each subframe; wherein TS0 always distributes to down link; and TS1 always distributes to up link) and 3 special time slots, be respectively descending pilot frequency time slot (referred to as DwPTS), protection time slot (referred to as GP) and uplink pilot time slot (referred to as UpPTS).Separated by transfer point between UpPTS and the DwPTS.In the TD-SCDMA system, two transfer points are arranged in the subframe of each 5ms: first transfer point is from the down link to the up link, the GP of position between DwPTS and UpPTS, and first transfer point was fixed with respect to the time started of each subframe; Second transfer point is from the up link to the down link, and the position determines that second transfer point is variable according to the needs of network in system in different uplink and downlink time slot proportion relations.In the TD-SCDMA system, the chip of identifying cells is called descending synchronous code (referred to as SYNC-DL), be included among the descending pilot frequency time slot DwPTS and launch, UE generally adopts the position of so-called characteristics window search and definite DwPTS, realizes preliminary synchronously (namely so-called synchronously thick) between UE and base station.Then, the autocorrelation of recycling SYNC-DL, make the slip relevant treatment with receiving the SYNC-DL place data segment of roughly determining in advance in the signal with the corresponding basic SYNC-DL that UE local code maker generates, the synchronous position of chip-level has namely been indicated in the correlation peak position, thereby realizes the chip-level synchronous (being that so-called essence is synchronous) between UE and base station.Include training sequence intermediate code (referred to as the midamble code) among time slot TS0～TS6, UE utilizes the midamble code to estimate this user's channel impulse response, then channel impulse response is carried out interpolation processing, carry out again peak value searching and obtain the synchronism deviation estimation, utilize at last this synchronism deviation control synchronised clock, make realize between UE and base station chip-level following synchronously.
Summary of the invention
Restricted for solving the set-up site that the prior art repeater exists, original signal there is injury and needs the defective such as gps signal, the present invention proposes a kind of wireless signal that utilizes the base station to send, by adopting the position of characteristics window search and definite DwPTS, realize preliminary synchronously (namely so-called synchronously thick) between repeater and base station, pass through again the slip relevant treatment of SYNC-DL code, implement the chip-level synchronous (namely so-called synchronously smart) between repeater and base station, recycling midamble code book is estimated the repeater channel impulse response and obtains synchronism deviation to estimate, make between repeater and base station realize chip-level following synchronously, thereby guarantee the method and apparatus that the repeater various functions is realized smoothly.Because the method for synchronization of repeater of the present invention is very similar to the method for synchronization of mobile radio terminal, so be called " terminal synchronizes " method.And adopt the repeater of terminal synchronization method design also namely to be called " terminal synchronizes repeater ".Because the terminal synchronization method of TD-SCDMA system is adopted in terminal synchronizes of the present invention repeater, therefore, is easy to realize wireless telecommunications between webmaster and the repeater.
Adopt terminal synchronizes of the present invention repeater, can better guarantee the radio communication of repeater and base station, receive the Operation and Maintenance information that webmaster sends, in conjunction with the TD frame synchronizing signal that produces according to the base station down signal of receiving, produce and the corresponding up-downgoing control in base station sequential, the normal operation of control uplink and downlink link.Simultaneously, the operating state of monitoring repeater each subsystem, and the result that will monitor reports webmaster, thus realization is to the control of repeater.
Repeater of the present invention terminal synchronization method adopts DwPTS position in characteristics window search and the definite TD-SCDMA system data frame, realize preliminary synchronously (namely so-called synchronously thick) between repeater and base station, make the slip relevant treatment with receiving the SYNC-DL place data segment of roughly determining in advance in the signal with the corresponding basic SYNC-DL that repeater local code maker generates, realize the chip-level synchronous (namely so-called synchronously smart) between repeater and base station, recycling midamble code is estimated the channel impulse response of repeater and is processed and obtain synchronism deviation and estimate, realize that the chip-level between repeater and base station is synchronously following, and the mode of employing TD-SCDMA system wireless terminal realizes the wireless telecommunications between webmaster and the repeater.
Repeater of the present invention terminal synchronization method adopts the mode of TD-SCDMA system wireless terminal to realize that the wireless telecommunications between webmaster and the repeater comprise: the operation and maintenance center (referred to as webmaster) of a repeater is set and comprises that (quantity can be determined according to the repeater number below the radio network controller with the wireless terminal of some in network terminal, radio network controller is usually referred to as RNC), communication module with Radio Terminal Function is set in each repeater, and the setting by the TD-SCDMA system makes between the wireless terminal of webmaster and the repeater communication module and realizes wireless telecommunications.
The wireless terminal that comprises in the terminal synchronization method webmaster of repeater of the present invention can be wireless terminal independently, also can be the device that can realize independently carrying out with all repeaters wireless communication function.
Terminal synchronizes of the present invention repeater comprises: with the base station carry out radio communication RF-coupled module, filter, have with the base station set up wireless communication function communication module, have finish opening initialization and the monitoring module that communication module is controlled, have to the uplink and downlink signal carry out respective operations transmit-receive switch, have upward signal carried out the up amplification module of enlarging function and has the descending amplification module that downstream signal is carried out enlarging function.
Terminal synchronizes of the present invention repeater communication module comprises radio circuit, antenna socket, 26M clock (26MCLOCK), memory (FLASH/SRAM), Power Management Unit, analogue baseband processors (ABB), baseband processor (ARM9 and two DSP) and 60 needle connectors.
Terminal synchronizes monitoring repeater module of the present invention comprises common user identification card (USIM), microprocessor (MPU) and complex programmable logic equipment (CPLD) etc.
The interface of terminal synchronizes of the present invention repeater communication module and monitoring module comprises:
● radio frequency input/output interface, the radio frequency from the discharging-directly station antenna coupled signal to communication module (referred to as RF) front end;
● the voltage requirements of communication module is 3.6V, and electric current 500mA obtains the power supply input from the monitoring repeater module;
● the 26MHz reference signal, communication module provides the 26MHz reference clock for monitoring module;
● the communication interface of Universal Asynchronous Receiver ﹠ dispensing device (referred to as UART), the i.e. communication interface of repeater communication module and monitoring module;
● frame synchronizing signal, communication module provide the 5ms frame signal of periodic TD-SCDMA wireless sub-frame;
● whether synchronous enabled signal, communication module provide finishes the synchronous enable signal of 1/8chip precision with the base station;
● common user identification card (referred to as USIM) interface, USIM control interface (usim card is installed on the monitoring repeater module);
● reseting interface (referred to as the RESET interface), being used for the monitoring repeater module restarts the interface of communication module.
Terminal synchronizes of the present invention repeater communication module and data, instruction between the monitoring module pass through serial ports and are connected and are achieved, the type of serial ports frame comprises: be used for monitoring module and send the serial ports (referred to as AT COMMAND) of instruction to communication module, be used for the serial ports (referred to as CS/PSDATA) that circuit domain/block domain data sends and the serial ports (referred to as ERRORREPORT) that is used for serial ports FCS (Frame Check Sequence frame check sequence) verification failure error reporting.
Serial ports is transmitted in instruction between terminal synchronizes of the present invention repeater communication module and the monitoring module can adopt AT instruction (referred to as AT COMMAND) conduct information interaction between the two, also can adopt other command system realization information interaction between the two.
The unified serial ports frame format encapsulation of the data of sending and receiving between terminal synchronizes of the present invention repeater communication module and the monitoring module.
Description of drawings
The framework schematic diagram of Fig. 1 terminal synchronizes of the present invention repeater in Radio Network System;
The basic framework schematic diagram of Fig. 2 terminal synchronizes direct discharging station of the present invention;
Fig. 3 terminal synchronizes of the present invention repeater communication module basic structure schematic diagram;
Fig. 4 terminal synchronizes of the present invention repeater communication module and monitoring module connected mode schematic diagram.
Below in conjunction with accompanying drawing and repeater embodiment the inventive method and device are further described.
Accompanying drawing 1 is the framework schematic diagram of terminal synchronizes of the present invention repeater in Radio Network System.As seen from the figure, adopt terminal synchronizes of the present invention repeater after, the structure of whole system there is no large variation.For Long-distance Control and the maintenance that realizes the repeater, realize the wireless telecommunications between network terminal (webmaster) and the repeater, the operation and maintenance center (webmaster) that can increase a repeater is managed the repeater under this RNC control.Discharging-directly station network management is connected to come interactive information with normal webmaster with Ethernet, and the commercial TD-SCDMA mobile phone (quantity can be determined according to the repeater number below the RNC) that its webmaster comprises some is used for carrying out information interaction with the repeater of its control as required.Communication module realization in the repeater is communicated by letter and information interaction with the TD-SCDMA mobile phone of discharging-directly station network management, and the main contents of information interaction comprise: webmaster is revised the time slot allocation of corresponding repeater; The alarm that discharging-directly station network management reports control information and the repeater of repeater and response message etc.Interactive information realizes by short message between discharging-directly station network management mobile phone and the repeater.
Accompanying drawing 2 is basic framework schematic diagrames of terminal synchronizes direct discharging station of the present invention.Terminal synchronizes of the present invention repeater mainly comprises the parts such as communication module, monitoring module, transmit-receive switch, up amplification module and descending amplification module as seen from the figure.Communication module has with the base station sets up wireless communication function, mainly finish with the base station and set up radio communication, receive the Operation and Maintenance information that webmaster sends, in conjunction with the TD frame synchronizing signal that produces according to the base station down signal of receiving, produce and the corresponding up-downgoing control in base station sequential, the normal operation of control uplink and downlink link.Monitoring module has the function of finishing opening initialization and communication module being controlled, the operating state of monitoring repeater each subsystem, and the result that will monitor reports webmaster, thus realization is to the control of repeater.Transmit-receive switch has the function of the uplink and downlink signal being carried out respective operations.The uplink and downlink amplification module have upward signal is carried out enlarging function and have downstream signal carried out enlarging function.
At first, the antenna reception base station signal is converted to base band inphase/orthogonal (referred to as I/Q) signal with radiofrequency signal after coupling and Analog Baseband processing, by after the baseband processor of communication module, detect the synchronizing signal of TD-SCDMA again, realize synchronously with base station signal accurately.According to the frame structure characteristics of TD-SCDMA uplink and downlink time slot allocation, at corresponding transfer point control transmit-receive switch, switch thereby be implemented between the uplink downlink; If it is descending time slot that communication module is judged base station signal, then transmit-receive switch cuts out up link, opens down link, and the repeater is processed downstream signal and amplified, at last by antenna transmission to user mobile phone; If base station signal is ascending time slot, then transmit-receive switch cuts out down link, and makes up link be in out state, and then upward signal is processed through the repeater and amplified, and is forwarded back to the base station by donor antenna at last.
Monitoring module is as master controller, and communication module is from controller.After master controller is finished opening initialization and other corresponding flow process, provide synchronizing signal with the base station from controller for master controller, and finish the communication between master controller and the webmaster, both common effective controls that realize the repeater.
Accompanying drawing 3 is terminal synchronizes of the present invention repeater communication module basic structure schematic diagrames.As seen from the figure, communication module mainly comprises antenna socket, radio circuit, 26M CLOCK (26M clock), FLASH/SRAM (memory), Power Management Unit, ABB (Analog Baseband processing), baseband processor (ARM9 and two DSP) and 26 needle connectors.The communication module conduct is from controller, and its power supply is provided by monitoring module.Radio circuit comprises the reception base station signal, and mixing and intermediate frequency amplify.ABB (Analog Baseband processing) effect is the modulation and demodulation signals, baseband processor is a baseband signal processor that is used for the Low Power High Performance of TD-SCDMA wireless terminal, the processing nuclear of it is integrated two DSP nuclears, ARM nuclear, TD-SCDMA special use, and some general-purpose interfaces, it can finish the ability of TD-SCDMA data service, supports simultaneously Base-Band Processing, protocol stack to process and use and process.Communication module receives the radiofrequency signal of base station emission by its radio frequency part, deliver to ABB through the signal after mixing and the intermediate frequency amplification processing, demodulate i/q signal, re-send in DSP (digital signal processor) module of baseband processor and carry out Digital Signal Processing, demodulate the information that webmaster sends, and these information exchanges are crossed serial ports deliver to monitoring module; Vice versa.Communication module will extract the frame synchronizing signal of base station and deliver to monitoring module, and simultaneously, it by the TD wireless transmission method, is transferred to webmaster with the reporting information that monitoring module sends.
Realize principle according to the TD-SCDMA repeater, its communication module is mainly finished following 3 kinds of functions:
1, communicates (being equivalent to communicate by letter between mobile phone and the mobile phone) with the discharging-directly station network management mobile phone;
2, obtain control information and warning information from directly putting, send to webmaster;
3, receive network management control information, after the parsing, the control repeater.
Accompanying drawing 4 is terminal synchronizes of the present invention repeater communication module and monitoring module connected mode schematic diagram.As seen from the figure, the communication module of repeater and monitoring module mainly comprise with lower interface:
● radio frequency input/output interface, the RF front end from the discharging-directly station antenna coupled signal to communication module;
● the voltage requirements of communication module is 3.6V, and 500mA obtains the power supply input from the monitoring repeater module;
● the 26MHz reference signal, communication module provides the 26MHz reference clock for monitoring module;
● the communication interface of Universal Asynchronous Receiver ﹠ dispensing device (referred to as UART), the i.e. communication interface of repeater communication module and monitoring module;
● frame synchronizing signal, communication module provide the 5ms frame signal of periodic TD-SCDMA wireless sub-frame;
● whether synchronous enabled signal, communication module provide finishes the synchronous enable signal of 1/8chip precision with the base station;
● common user identification card (referred to as USIM) interface, USIM control interface (usim card is installed on the monitoring repeater module);
● reseting interface (referred to as the RESET interface), being used for the monitoring repeater module restarts the interface of communication module.
In repeater embodiment of the present invention, monitoring module is that communication module (from controller) provides the 3.6V DC power supply as master controller, the state information that gathers the sending and receiving end, repeater sends to network terminal, sends control command to the sending and receiving end, repeater after also can parsing the corresponding instruction of webmaster.Communication module mainly finish with webmaster between communicate by letter, set up synchronizing signal, the instruction of transmission network end and monitoring module.Mainly finish the switch of uplink and downlink signal and amplification the sending and receiving end, repeater.Monitoring module carries out opening initialization to communication module after sending starting-up signal again.When communication module finish with the base station synchronously after, synchronous enabled signal can be drawn high, this moment, the TD-SCDMA frame synchronizing signal of the 5ms that communication module provides for monitoring module was effective, and monitoring module can parse the network registry state from the AT order that communication module sends.After finishing the note initialization, monitoring module can send monitor message to network terminal by communication module, and network terminal also can send control and querying command to monitoring module.
Obviously, in order to realize communication module and monitoring module data, instruction transmission, realize the information interaction between communication module and the monitoring module, can connect by serial ports between repeater communication module and the monitoring module, the type of serial ports frame can comprise: be used for monitoring module and send the serial ports (referred to as AT COMMAND) of instruction to communication module, be used for the serial ports (referred to as CS/PS DATA) that circuit domain/block domain data sends and the serial ports (referred to as ERROR REPORT) that is used for serial ports FCS verification failure error reporting.For easy, practical, monitoring module of the present invention has adopted AT instruction (referred to as AT COMMAND) conduct information interaction between the two to the serial ports that communication module sends instruction, can certainly adopt other command systems realizations information interaction between the two.In addition, the unified serial ports frame format encapsulation of the data of sending and receiving.
Claims (9)
1. TD-SCDMA system repeater terminal synchronization method, it is characterized in that: adopt DwPTS position in characteristics window search and the definite TD-SCDMA system data frame, realize synchronously preliminary between repeater and base station, namely synchronously thick, make the slip relevant treatment with receiving the SYNC-DL place data segment of roughly determining in advance in the signal with the corresponding basic SYNC-DL that repeater local code maker generates, realize that the chip-level between repeater and base station is synchronous, namely synchronously smart, recycling midamble code is estimated the channel impulse response of repeater and is processed and obtain synchronism deviation and estimate, realize that the chip-level between repeater and base station is synchronously following, and the mode of employing TD-SCDMA system wireless terminal realizes the wireless telecommunications between webmaster and the repeater.
2. described repeater terminal synchronization method according to claim 1, it is characterized in that: adopt the mode of TD-SCDMA system wireless terminal to realize that the wireless telecommunications between webmaster and the repeater comprise: the operation and maintenance center that a repeater is set in network terminal, it is webmaster, and comprise the identical wireless terminal of repeater quantity below radio network controller (RNC), communication module with Radio Terminal Function is set in each repeater, and the setting by the TD-SCDMA system makes between the wireless terminal of webmaster and the repeater communication module and realizes wireless telecommunications.
3. described repeater terminal synchronization method according to claim 1 is characterized in that: the wireless terminal that comprises in the webmaster can be wireless terminal independently, also can be the device that can realize independently carrying out with all repeaters wireless communication function.
4. synchronous repeater of TD-SCDMA system terminal, it is characterized in that: the described repeater of claim 1 terminal synchronization method is adopted in this terminal synchronizes repeater, comprising: carry out the RF-coupled module of radio communication with the base station, filter, has the communication module of setting up wireless communication function with the base station, has the monitoring module of finishing opening initialization and communication module being controlled, have upper, downstream signal carries out the transmit-receive switch of respective operations, have upward signal is carried out the up amplification module of enlarging function and has the descending amplification module that downstream signal is carried out enlarging function; Described communication module comprises radio circuit, antenna socket, 26M clock, memory FLASH/SRAM, Power Management Unit, analogue baseband processors ABB, baseband processor and 60 needle connectors.
5. described terminal synchronizes repeater according to claim 4, it is characterized in that: monitoring module comprises common user identification card USIM, microprocessor MPU and complex programmable logic equipment CPLD.
6. described terminal synchronizes repeater according to claim 4, it is characterized in that: the interface of communication module and monitoring module comprises:
● radio frequency input/output interface, the radio frequency front end from the discharging-directly station antenna coupled signal to communication module;
● the voltage requirements of communication module is 3.6V, and electric current 500mA obtains the power supply input from the monitoring repeater module;
● the 26MHz reference signal, communication module provides the 26MHz reference clock for monitoring module;
● the communication interface UART of Universal Asynchronous Receiver ﹠ dispensing device, the i.e. communication interface of repeater communication module and monitoring module;
● frame synchronizing signal, communication module provide the 5ms frame signal of periodic TD-SCDMA wireless sub-frame;
● whether synchronous enabled signal, communication module provide finishes the synchronous enable signal of 1/8chip precision with the base station;
● common user identification card USIM interface, the USIM control interface, namely usim card is installed on the monitoring repeater module;
● reseting interface, i.e. RESET interface, being used for the monitoring repeater module restarts the interface of communication module.
7. described terminal synchronizes repeater according to claim 4, it is characterized in that: communication module and data, instruction between the monitoring module pass through serial ports and are connected and are achieved, the type of serial ports frame comprises: be used for monitoring module and send the serial ports of instruction AT COMMAND to communication module, be used for the serial ports that circuit domain/block domain data CS/PS DATA sends and the serial ports that is used for serial ports frame check sequence verification failure error reporting ERROR REPORT.
8. described terminal synchronizes repeater according to claim 4, it is characterized in that: serial ports is transmitted in the instruction between communication module and the monitoring module can adopt AT instruction AT COMMAND conduct information interaction between the two, also can adopt other command system realization information interaction between the two.
9. described terminal synchronizes repeater according to claim 4 is characterized in that: the unified serial ports frame format encapsulation of the data of sending and receiving between communication module and the monitoring module.
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