CN101541028B - Testing method and device for high-speed information channel - Google Patents
Testing method and device for high-speed information channel Download PDFInfo
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- CN101541028B CN101541028B CN2009101350694A CN200910135069A CN101541028B CN 101541028 B CN101541028 B CN 101541028B CN 2009101350694 A CN2009101350694 A CN 2009101350694A CN 200910135069 A CN200910135069 A CN 200910135069A CN 101541028 B CN101541028 B CN 101541028B
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Abstract
The embodiment of the invention provides a testing method and a testing device for a high-speed information channel. The high-speed information channel is connected with an interface device and a time division multiplex switching device. The method comprises the steps of: inserting data at leisure time and sending the inserted data to the interface device by the time division multiplex switching device; looping the inserted data back to the time division multiplex switching device by the interface device; reading the data looped back, and comparing the read data and the inserted data sent before by the time division multiplex switching device; and judging that the high-speed information channel works normally if the data conform to each other, otherwise, judging that the high-speed information channel is failed. The method and the device of the embodiment of the invention carry out loopback test at leisure time instead of at service time so as to lead the test of HW to be carried out without influencing the system capacity.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of detection method of high-speed information channel and device.
Background technology
In mobile communication process, data BTS (the Base Transceiver Station that need flow through, the base station), BSC (Base Station Controller, base station controller) and MSC (Mobile Switching Center, mobile switching centre), (a kind of communication link, frame length are 256 bits to use E1 between BSC and BTS, the MSC, be divided into 32 time slots, a time slot is 8 bit) carry out transfer of data.PCM (pulse code modulation, pulse code modulation) frame data enter in the interface board by after interface arrangement (as the interface chip) processing, again by HW (Highway, high-speed channel) is transferred to TDM (Time Division Multiplex, time division multiplexing) switch (as the TDM Switching Module) exchanges to relevant business board then and handles.
The HW that many 8Mbps are arranged between the interface chip of BSC interface board and the TDM Switching Module has 128 time slots, the voice speech channel that can carry 128 64Kbps simultaneously on every HW passage.Can cause voice interruption in case the HW transmission channel breaks down, business is obstructed, and large tracts of land influences the user and uses.Therefore, need a kind of effective testing mechanism in time to find the transmission problem and the report and alarm of HW passage.
Fig. 1 is that a kind of HW of prior art detects principle schematic, as shown in Figure 1,
Step S101, extract a fixed service time slot (No. 31 time slots) at every HW and be used for the HW passage and detect, the TDM Switching Module inserts data at this fixed service time slot.
Step S102, carry out single time slot loopback (Loopback) on interface chip, loopback is this area generic term, is meant that the recipient does not process directly to give transmit leg with the data loopback after receiving the data that transmit leg sends.
Step S103, in the retaking of a year or grade of the enterprising line data of TDM Switching Module.If it is inconsistent to insert data and retaking of a year or grade data, think that then transmission fault has appearred in this HW passage.
The inventor finds that there is following defective in the technical scheme of prior art: this detection method need take business time-slot, causes the interface board access capacity to reduce, and causes the Business Processing specification of BSC to descend though increased the reliability of system.
Summary of the invention
The embodiment of the invention provides a kind of detection method and device of high-speed information channel, and this method realizes the detection to HW under the prerequisite that does not influence power system capacity.
The embodiment of the invention provides a kind of detection method of high-speed information channel, described high-speed information channel connecting interface device and time division multiplexing switch, described method comprises: described interface arrangement receives by the synchrodata of synchronization slot carrying and by business time-slot loaded service data, extract the synchrodata of synchronization slot, make described synchronization slot become idle time slot; Described interface arrangement sends to described time division multiplexing switch with described business time-slot loaded service data by described high-speed information channel; Described time division multiplexing switch crack at one's leisure inserts data, and the data of inserting are sent to described interface arrangement; Described interface arrangement is given described time division multiplexing switch with the data loopback of described insertion; Described time division multiplexing switch reads the data of loopback, and the data that the read data with the described insertion that sends are before compared; When both are consistent, judge described high-speed information channel operate as normal, otherwise judge that described high-speed information channel breaks down.
The embodiment of the invention also provides a kind of base station controller, connects by high-speed information channel between the interface arrangement of described base station controller and the time division multiplexing switch, and described interface arrangement comprises:
The Data Receiving unit is used to receive by the synchrodata of synchronization slot carrying and by business time-slot loaded service data, and framer is used to extract the synchrodata of synchronization slot, makes described synchronization slot become idle time slot; Data transmission unit is used for described business time-slot loaded service data are sent to described time division multiplexing switch by described high-speed information channel; Described time division multiplexing switch comprises: data are inserted the unit, are used for crack insertion data at one's leisure, and the data of inserting are sent to described interface arrangement; The data readback unit is used to read the data of described interface arrangement with the data loopback of described insertion; The passage detecting unit, the data that are used for the data of the described loopback that will read and the described insertion that sends before compare; When both are consistent, judge described high-speed information channel operate as normal, otherwise judge that described high-speed information channel breaks down.
The beneficial effect of the embodiment of the invention is: the method and apparatus of the embodiment of the invention adopts idle time slot to replace business time-slot, and the detection of HW is carried out under the prerequisite that does not influence power system capacity.
Description of drawings
Fig. 1 is that a kind of HW of prior art detects principle schematic;
Fig. 2 is that a kind of HW of the embodiment of the invention detects principle schematic;
Fig. 3 is one of theory diagram of embodiment of the invention BSC;
Fig. 4 be embodiment of the invention BSC theory diagram two.
Embodiment
Specific embodiments of the present invention is described in detail below in conjunction with accompanying drawing.
Fig. 2 is that a kind of HW of the embodiment of the invention detects principle schematic.As shown in Figure 2: link to each other by HW30 between interface arrangement 10 in the interface board of BSC and the TDM switch 20, BSC connects external equipment by the E1 link.Alternatively, this interface arrangement 10 is an interface chip, and this TDM switch 20 is the TDM Switching Module.
In the E1 transmission course, 0 time slot of each frame is used as frame synchronization, and all the other time slots are used for the bearer service data.After the framer of interface chip extracted the frame synchronizing signal of 0 time slot, 0 time slot did not just re-use.According to the multiplexing relation of E1 time slot and HW time slot as can be known, 0 time slot on every HW also just is not used in bearer service.The embodiment of the invention is utilized this characteristic exactly, insert data by the TDM module at 0 time slot and send to interface chip, interface chip adopts single time slot loopback, carries out data readback by the TDM module at 0 time slot then, and whether data and retaking of a year or grade data are consistent detects HW by judge inserting.Alternatively, this loopback point is arranged on after the framer of interface chip and near a side of TDM Switching Module in the plate, like this TDM Switching Module in the process interface chip, neither can influence the synchronizing function of chip to the data that interface chip 0 time slot inserts again can be with the data loopback.Describe the step of this method in detail below in conjunction with Fig. 2:
The data of step S201, external equipment enter interface arrangement 10 via the E1 link.These data comprise synchrodata that is carried on synchronization slot and the business datum that is carried on business time-slot.The synchronization slot of E1 link is 0 time slot, and business time-slot is the 1-31 time slot.
The data of step S202,10 pairs of receptions of interface arrangement are handled.After the framer of interface arrangement 10 extracts the interior synchrodata of synchronization slot, synchronization slot will become idle time slot.Interface arrangement 10 sends to TDM switch 20 with the business time-slot of idle time slot and a plurality of bearer services by HW.
Step S203, TDM switch 20 idle time slot (0 time slot) at this moment inserts data, and the data of inserting are sent to interface arrangement 10 by HW.
Step S204, interface arrangement 10 carry out single time slot loopback.Alternatively, it is outer and near a side of TDM Switching Module in the plate that this loopback point is arranged on the framer of interface chip, the data of idle time slot walk around framer and directly loopback give the TDM Switching Module, the synchronizing function that so neither can influence chip again can be with the data loopback.
The data of the idle time slot of step S205,20 retakings of a year or grade of TDM switch, and the data of data that read and the insertion that sends are before compared; When both are consistent, judge described high-speed information channel operate as normal, otherwise judge that described high-speed information channel breaks down.
The method of the embodiment of the invention makes full use of the characteristic that E1 when transmission PCM frame 0 time slot does not just re-use later on through the framer of interface chip, is not influencing the function that the interface chip of having realized the butt joint oralia under the prerequisite that the existing network system inserts specification detects in real time to the HW passage between the TDM Switching Module.It is unaffected that this method has not only promoted the operational reliability of system but also guaranteed the access specification of BSC system.
The embodiment of the invention also provides a kind of base station controller.Fig. 3 is one of theory diagram of embodiment of the invention BSC.As shown in Figure 3: connect by high-speed information channel 30 between the interface arrangement 10 of the base station controller of the embodiment of the invention and the time division multiplexing switch 20.Alternatively, interface arrangement 10 connects external equipment by the E1 link.
Time division multiplexing switch 20 comprises: data are inserted unit 203, are used for crack insertion data at one's leisure, and the data of inserting are sent to described interface arrangement, and alternatively, this free time time slot is 0 time slot of E1 link; Data readback unit 201 is used to read the data of described interface arrangement with the data loopback of described insertion; Passage detecting unit 202, the data that are used for described looping back data that will read and the described insertion that sends before compare; When both are consistent, judge described high-speed information channel operate as normal, otherwise judge that described high-speed information channel breaks down.
Fig. 3 be embodiment of the invention BSC theory diagram two.As shown in Figure 4, the base station controller of the base station controller of the embodiment of the invention and a last embodiment is roughly the same, difference is, the interface arrangement 10 of the embodiment of the invention also comprises: loopback point is provided with unit 104, be used for loopback point is arranged on a side of the outer and close described time division multiplexing switch of described framer, make described data transmission unit 101 that the data that described idle time slot inserts are walked around described framer, directly loopback is given described time division multiplexing switch.Like this TDM Switching Module to data that interface chip 0 time slot inserts again can be with the data loopback through the synchronizing function that neither can influence chip in the interface chip.
The base station controller of the embodiment of the invention makes full use of the characteristic that E1 when transmission PCM frame 0 time slot does not just re-use later on through the framer of interface chip, is not influencing the function that has realized under the prerequisite that the existing network system inserts specification that the interface chip to the BSC interface board detects in real time to the HW passage between the TDM Switching Module.It is unaffected that this base station controller has not only promoted the operational reliability of system but also guaranteed the access specification of BSC system.
Above embodiment only is used to illustrate the present invention, but not is used to limit the present invention.
Claims (8)
1. the detection method of a high-speed information channel, described high-speed information channel connecting interface device and time division multiplexing switch is characterized in that, described method comprises:
Described interface arrangement receives by the synchrodata of synchronization slot carrying and by business time-slot loaded service data, extracts the synchrodata of synchronization slot, makes described synchronization slot become idle time slot;
Described interface arrangement sends to described time division multiplexing switch with described business time-slot loaded service data by described high-speed information channel;
Described time division multiplexing switch crack at one's leisure inserts data, and the data of inserting are sent to described interface arrangement;
Described interface arrangement is given described time division multiplexing switch with the data loopback of described insertion;
Described time division multiplexing switch reads the data of loopback, and the data that the read data with the described insertion that sends are before compared;
When both are consistent, judge described high-speed information channel operate as normal, otherwise judge that described high-speed information channel breaks down.
2. method according to claim 1 is characterized in that, described interface arrangement extracts the synchrodata of synchronization slot, makes described synchronization slot become idle time slot; Comprise:
The framer of described interface arrangement extracts the synchrodata of synchronization slot, makes described synchronization slot become idle time slot.
3. method according to claim 2 is characterized in that, described interface arrangement is given described time division multiplexing switch with the data loopback of described insertion, comprising:
Described interface arrangement is arranged on loopback point one side of the outer and close described time division multiplexing switch of described framer;
Described interface arrangement receives the data of the described insertion of described time division multiplexing switch transmission, and the data of described insertion are walked around described framer, and directly loopback is given described time division multiplexing switch.
4. method according to claim 1 is characterized in that, described interface arrangement connects external equipment by the E1 link, and described idle time slot is 0 time slot of E1 link.
5. a base station controller is characterized in that, connect by high-speed information channel between the interface arrangement of described base station controller and the time division multiplexing switch,
Described interface arrangement comprises:
The Data Receiving unit is used to receive by the synchrodata of synchronization slot carrying and by business time-slot loaded service data,
Framer is used to extract the synchrodata of synchronization slot, makes described synchronization slot become idle time slot;
Data transmission unit is used for described business time-slot loaded service data are sent to described time division multiplexing switch by described high-speed information channel;
Described time division multiplexing switch comprises:
Data are inserted the unit, are used for crack insertion data at one's leisure, and the data of inserting are sent to described interface arrangement;
The data readback unit is used to read the data of described interface arrangement with the data loopback of described insertion;
The passage detecting unit, the data that are used for the data of the described loopback that will read and the described insertion that sends before compare; When both are consistent, judge described high-speed information channel operate as normal, otherwise judge that described high-speed information channel breaks down.
6. base station controller according to claim 5 is characterized in that,
Described data transmission unit, also be used for described time division multiplexing switch at one's leisure the data loopback that inserts of crack give described time division multiplexing switch.
7. according to the described base station controller of claim 5, it is characterized in that described interface arrangement also comprises:
Loopback point is provided with the unit, be used for loopback point is arranged on a side of the outer and close described time division multiplexing switch of described framer, make described data transmission unit that the data that described idle time slot inserts are walked around described framer, directly loopback is given described time division multiplexing switch.
8. base station controller according to claim 5 is characterized in that, described interface arrangement connects external equipment by the E1 link, and described idle time slot is 0 time slot of E1 link.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101350694A CN101541028B (en) | 2009-04-22 | 2009-04-22 | Testing method and device for high-speed information channel |
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| CN2009101350694A CN101541028B (en) | 2009-04-22 | 2009-04-22 | Testing method and device for high-speed information channel |
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| CN101541028A CN101541028A (en) | 2009-09-23 |
| CN101541028B true CN101541028B (en) | 2011-04-13 |
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| CN102546476A (en) * | 2010-12-14 | 2012-07-04 | 中兴通讯股份有限公司 | Media gateway and method for detecting highway resources |
| WO2011144124A2 (en) * | 2011-05-30 | 2011-11-24 | 华为技术有限公司 | Interface unit of base station control system and detection method thereof |
| CN104579835B (en) * | 2015-01-05 | 2018-02-16 | 北京中科网维科技有限公司 | The method and apparatus of transmission channel in a kind of detection E1 link data frames |
| CN110824343A (en) * | 2019-11-22 | 2020-02-21 | 辰芯科技有限公司 | Detection method, device, equipment and medium of communication chip |
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