CN1852510A - Base-station, base-station controller interface and method for detecting said interface - Google Patents
Base-station, base-station controller interface and method for detecting said interface Download PDFInfo
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- CN1852510A CN1852510A CNA2005101080606A CN200510108060A CN1852510A CN 1852510 A CN1852510 A CN 1852510A CN A2005101080606 A CNA2005101080606 A CN A2005101080606A CN 200510108060 A CN200510108060 A CN 200510108060A CN 1852510 A CN1852510 A CN 1852510A
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Abstract
The invention discloses interface between base station BTS and base station controller BSC. The interface includes following modules and parts: HDLC unit and interface module at BTS side of E1 transceiver connected to each other, HDLC unit in use for packaging and de-packaging data in HDLC frame, and E1 transceiver in use for sending and receiving data in HDLC frame; interface module at BSC side of HDLC unit and interface module connected to each other; being connected between E1 transceiver at BTS side and E1 transceiver at BSC side, transmission module is in use for transmitting data in HDLC frame. At least one HDLC unit from HDLC unit at BTS side and HDLC unit at BSC side is located near to CPU can generate and send any frames. The invention also discloses method for testing BTS-BSC interface. The disclosed BTS-BSC interface possesses better testability.
Description
Technical field
The present invention relates to base station sub-system (BSS), particularly the interface between base station (BTS, Base TransceiverStation) and base station controller (BSC, Base Station Controller) and detect the method for this interface among the BSS.
Background technology
BSS generally includes BTS and BSC, common, BTS side apparatus and BSC side apparatus all can be divided into CPU (CPU) directly treatment facility and CPU external equipment, general, the direct treatment facility of CPU is directly controlled by CPU, can compare flexible processing, is suitable for expanded function, and the CPU external equipment only can be finished predetermined processing, is not easy to the flexible expansion function.
Current BSS is often by the high level data controlling links (HDLC between BTS-BSC interface realization BTS and BSC, High-level Data Link Control) frame format transfer of data, typical HDLC frame comprises 6 territories from front to back altogether: at least 8 opening flag (OF), and comprising a value is the 8 system numbers of 0x7E; 8 or 16 destination addresses (DA); 8 or 16 s' control domain; Optional information field, if information exists, then the length of information field must be 8 integral multiple; 16 or 32 s' verification territory (CRC); 8 end marks (CF).
The effect in CRC territory is that error detection is retransmitted, the debit can adopt the data in CRC-CCITT algorithm computation address field, control domain and the information field after receiving the HDLC frame, if the result who obtains equates with value in the CRC territory, then this frame does not have crc error, otherwise this frame has crc error.If the debit detects certain HDLC frame crc error is arranged, the reason that then produces this crc error may comprise following one or more: the originating party mistake, it is wrong that for example originating party calculates the CRC territory, perhaps do not fill in the CRC territory; Error of transmission, this may relate to all devices of this HDLC frame process in transmission course and the line of equipment room; Debit's mistake, calculating CRC territory was wrong when for example the debit detected the CRC territory.
Also have the frame losing mistake in the HDLC frame that the debit receives, promptly in the HDLC frame OF territory is arranged and do not have the CF territory, there are 7 or more " 0b1 " in the OF territory before the CF territory in other words.If the debit detects certain HDLC frame the frame losing mistake is arranged, the reason that then produces this frame losing mistake may comprise following one or more: the originating party mistake, for example originating party is not filled in the CF territory; Error of transmission, this may relate to all devices of this HDLC frame process in transmission course and the line of equipment room; Debit's mistake, for example the debit detects wrong.
Fig. 1 is the structure chart of the BTS-BSC interface of prior art, and the BTS-BSC interface 100 of prior art comprises: the BTS side interface module 101 that includes HDLC unit 131 and E1 transceiver 141 includes the BSC side interface module 102 of HDLC unit 132 and E1 transceiver 142; Be used for 102 transport modules of communicating by letter 103 of BTS side interface module 101 and BSC side interface module.Wherein, the HDLC unit 131 of BTS side interface module 101 and E1 transceiver 141 realize that by BTS side CPU external equipment the HDLC unit 132 of BSC side interface module 102 and E1 transceiver 142 are realized by BSC side CPU external equipment.
BTS side HDLC unit 131 is used to receive the data from BTS side interface module 101 upper stratas, these data occupy address field, control domain and information field in the HDLC frame, HDLC unit 131 is the HDLC frame horizontal pulse modulating-coding (PCM) of going forward side by side with these data encapsulation, and the PCM sign indicating number that coding is obtained sends E1 transceiver 141 to; HDLC unit 131 also is used to receive the PCM sign indicating number from E1 transceiver 141, and after decoding, extract address field the HDLC frame that obtains, control domain, information field data send to BTS side interface module 101 upper stratas; HDLC unit 131 further has test function, and whether for example detect, add up the HDLC frame that is received has crc error, whether the frame losing mistake is arranged.
BTS side E1 transceiver 141 is used to receive the PCM sign indicating number from HDLC unit 131, and it is encoded to the HDB3 sign indicating number and sends to E1 transceiver 142 by transport module 103; E1 transceiver 141 also is used to receive the HDB3 sign indicating number from E1 transceiver 142 that transmits by transport module 103, and it is decoded as the PCM sign indicating number and is sent to HDLC unit 131.
BSC side HDLC unit 132 is used to receive the data from BSC side interface module 102 upper stratas, these data occupy address field, control domain and information field in the HDLC frame, HDLC unit 132 is the HDLC frame horizontal pulse modulating-coding of going forward side by side with these data encapsulation, and the PCM sign indicating number that coding is obtained sends E1 transceiver 142 to; HDLC unit 132 also is used to receive the PCM sign indicating number from E1 transceiver 142, and after decoding, extract address field the HDLC frame that obtains, control domain, information field data send to BSC side interface module 102 upper stratas; HDLC unit 132 also has test function, and whether for example detect, add up the HDLC frame that receives has crc error, whether the frame losing mistake is arranged.
E1 transceiver 142 is used to receive the PCM sign indicating number from HDLC unit 132, and it is encoded to the HDB3 sign indicating number and sends to E1 transceiver 141 by transport module 103; E1 transceiver 142 also is used to receive the HDB3 sign indicating number from E1 transceiver 141 that transmits by transport module 103, and it is decoded as the PCM sign indicating number and is sent to HDLC unit 132.
Common, adopt the communication link of the E1 transceiver support of TDM (time division multiplexing) to be divided into 32 time slots, wherein the data of HDLC unit transmitting-receiving may only take the part time slot of E1 transceiver, in this case, when the HDLC unit receives data from the E1 transceiver, only extract the data on its part time slot that takies.
In current practical application, the HDLC unit of BTS side and BSC side is realized by the communication controler as the CPU external equipment usually, serial communication controller of the MPC860 of Motorola Inc. (SCC) etc. for example, their common feature is the transmitting-receiving and the test function that can only provide fixing, be difficult to carry out flexible expansion, only can detect such as current HDLC unit, in the HDLC frame that statistics is received whether crc error is arranged, whether the frame losing mistake is arranged, but just be difficult to the location for the reason that forms these problems, and in fact, the generation of these mistakes may have relation with following three aspects: originating party HDLC unit mistake, it is wrong that for example originating party HDLC unit calculates the CRC territory, perhaps do not fill in the CF territory; Transmission course mistake, i.e. device that connects between originating party HDLC unit and debit HDLC unit and the Miswire between the device; Debit HDLC unit mistake, for example debit HDLC unit calculates CRC territory mistake.The BTS-BSC interface of prior art must detect above-mentioned three aspects respectively by special inspecting equipment could orientation problem, this caused existing BTS-BSC interface the testability extreme difference, detect with high costs.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of BTS-BSC interface, it has testability preferably.
The present invention also aims to provide a kind of method of the BTS-BSC of detection interface, it can detect the BTS-BSC interface.
An aspect according to above-mentioned purpose the invention provides a kind of BTS-BSC interface, and this interface comprises BTS side interface module and BSC side interface module,
BTS side interface module comprises interconnective BTS side HDLC unit and BTS side E1 transceiver, and this BTS side HDLC unit is used for encapsulation and decapsulation HDLC frame data, and this BTS side E1 transceiver is used to receive and dispatch the HDLC frame data;
BSC side interface module comprises interconnective BSC side HDLC unit and BSC side E1 transceiver, and this BSC side HDLC unit is used for encapsulation and decapsulation HDLC frame data, and this BSC side E1 transceiver is used to receive and dispatch the HDLC frame data;
And be connected the transport module that is used for the transmission of BTS side and BSC side HDLC frame data between BTS side E1 transceiver and the BSC side E1 transceiver,
In described BTS side HDLC unit and the described BSC side HDLC unit at least one is arranged in its side CPU, can generates and send arbitrary frame.
Wherein, at least one in described BTS side HDLC unit and the described BSC side HDLC unit is arranged in its side CPU, what can generate and send arbitrary frame is BTS side HDLC unit; Described interconnective BTS side HDLC unit and BTS side E1 transceiver interconnect by the transparent transmission unit.
Wherein, at least one in described BTS side HDLC unit and the described BSC side HDLC unit is arranged in its side CPU, what can generate and send arbitrary frame is BSC side HDLC unit; Described interconnective BSC side HDLC unit and BSC side E1 transceiver interconnect by the transparent transmission unit.
Wherein, at least one in described BTS side HDLC unit and the described BSC side HDLC unit is arranged in its side CPU, what can generate and send arbitrary frame is BTS side HDLC unit and BSC side HDLC unit; Described interconnective BTS side HDLC unit and BTS side E1 transceiver interconnect by the transparent transmission unit; Described interconnective BSC side HDLC unit and BSC side E1 transceiver interconnect by the transparent transmission unit.
According to another aspect of above-mentioned purpose, the present invention also provides a kind of method of base stations detected BTS-base station controller BSC interface, and the process that interface detects may further comprise the steps:
A HDLC unit that can generate and send arbitrary frame in A, BTS side HDLC unit and the BSC side HDLC unit, send HDLC test frame X by this side E1 transceiver, transport module and opposite side E1 transceiver to the 2nd HDLC unit of opposite side successively, whether the HDLC test frame X that the 2nd HDLC unit detects its reception is vicious HDLC test frame X ', if, execution in step B then, otherwise confirm that this interface is correct, process ends;
This HDLC test frame X ' is preserved in B, the 2nd HDLC unit, the one HDLC unit obtains the HDLC verification frame X ' identical with HDLC test frame X ' with generation, and send this HDLC verification frame X ' by this side E1 transceiver, transport module and opposite side E1 transceiver to the 2nd HDLC unit successively, whether the HDLC verification frame X ' that the 2nd HDLC unit compares its reception is identical with the HDLC test frame X ' of its preservation, if, confirm that then a HDLC unit is incorrect, other parts are correct in this interface, otherwise confirm that other parts are incorrect in this interface.
Wherein, described mistake is a verification territory crc error.
Wherein, described mistake is the frame losing mistake.
Wherein, a HDLC unit that can generate and send arbitrary frame in described BTS side HDLC unit and the BSC side HDLC unit is BTS side HDLC unit, and described the 2nd HDLC unit is BSC side HDLC unit;
Among described steps A and the B, BTS side HDLC unit sends HDLC test frame X and HDLC verification frame X ' by this side transparent transmission unit, E1 transceiver, transport module and BSC side E1 transceiver to BSC side HDLC unit successively.
Wherein, a HDLC unit that can generate and send arbitrary frame in described BTS side HDLC unit and the BSC side HDLC unit is BSC side HDLC unit, and described the 2nd HDLC unit is BTS side HDLC unit;
Among described steps A and the B, BSC side HDLC unit sends HDLC test frame X and HDLC verification frame X ' by this side transparent transmission unit, E1 transceiver, transport module and BTS side E1 transceiver to BTS side HDLC unit successively.
Wherein, in described BTS side HDLC unit and the BSC side HDLC unit can to generate and send a HDLC unit of arbitrary frame be in BTS side HDLC unit and the BSC side HDLC unit any;
Among described steps A and the B, a HDLC unit sends HDLC test frame X and HDLC verification frame X ' by this side transparent transmission unit, E1 transceiver, transport module and opposite side E1 transceiver to the 2nd HDLC unit successively.
As seen, in BTS-BSC interface provided by the invention, because the HDLC unit of BTS side and BSC side has a direct treatment facility of CPU that is arranged in its side at least in the two, can generate and send arbitrary frame, so when the debit detects wrong HDLC frame, originating party HDLC unit can generate and send the verification frame identical with it to debit HDLC unit, and the concrete equipment of HDLC frame mistake can be determined to cause in debit HDLC unit by more vicious HDLC frame and the verification frame of being received.Need not to carry out owing to detect the whole testing process of the method for this interface, so it is very low to detect cost by the checkout equipment of special use.
Description of drawings
Fig. 1 is the structure chart of the BTS-BSC interface of prior art.
Fig. 2 is the structure chart of the BTS-BSC interface of the embodiment of the invention one.
Fig. 3 is the structure chart of the BTS-BSC interface of the embodiment of the invention two.
Fig. 4 is the structure chart of the BTS-BSC interface of the embodiment of the invention three.
Embodiment
Core concept of the present invention is: in the either side or the both sides of the BTS of BTS-BSC interface side or BSC side, use the HDLC unit of realizing, can generate and send arbitrary frame by the direct treatment facility of this side CPU to replace HDLC of the prior art unit.
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples, and with reference to accompanying drawing, the present invention is described in more detail.
Embodiment one: in the BTS of present embodiment side, use the HDLC unit of being realized, can be generated and send any HDLC frame by the direct treatment facility of this side CPU, replace HDLC of the prior art unit.
Fig. 2 is the structure chart of the BTS-BSC interface of the embodiment of the invention one, and the BTS-BSC interface 200 of the embodiment of the invention one comprises: the BTS side interface module 201 that includes E1 transceiver 141 and HDLC unit 261; The BSC side interface module 102 that includes HDLC unit 132 and E1 transceiver 142; Be used for 102 transport modules of communicating by letter 103 of BTS side interface module 201 and BSC side interface module.
Wherein, the E1 transceiver 141 of BTS side interface module 201 is realized by BTS side CPU external equipment, and HDLC unit 261 is realized by the direct treatment facility of BTS side CPU.BTS side interface module 201 also can further comprise the transparent transmission unit 251 of being realized, be used for transparent data by the CPU external equipment, also we can say, transparent transmission unit 251 can be used as by the HDLC unit 261 of the direct treatment facility realization of CPU with by the transmission channel between the E1 transceiver 141 of CPU external equipment realization and exists, and it can play the effect of contact BTS side CPU and external equipment.For the BSC side, compared with prior art, the HDLC unit 132 of BSC side interface module 102 and E1 transceiver 142 still realize that by BSC side CPU external equipment their function and annexation do not change yet.
HDLC unit 261 is used to receive the data from BTS side interface module 201 upper stratas, these data occupy address field, control domain and information field in the HDLC frame, HDLC unit 261 is the HDLC frame horizontal pulse modulating-coding of going forward side by side with these data encapsulation, and the PCM sign indicating number that coding is obtained sends transparent transmission unit 251 to; HDLC unit 261 also is used to receive the PCM sign indicating number from transparent transmission unit 251, and extracts address field, control domain, information field data send to BTS side interface module 201 upper stratas from the HDLC frame that decoding obtains; The HDLC unit further has test function flexibly, except that can carry out detection, the statistics HDLC frame that receives whether crc error is arranged, whether has the frame losing mistake, can also generate and send arbitrary frame.
Transparent transmission unit 251 is used to receive from the PCM sign indicating number of HDLC unit 261 and sends to E1 transceiver 141; Transparent transmission unit 251 also is used to receive from the PCM sign indicating number of E1 transceiver 141 and sends to HDLC unit 261, the data of 261 transmitting-receivings only take under the situation of E1 transceiver 141 part time slots in the HDLC unit, when transparent transmission module 251 receives data from the E1 transceiver, only extract the data on the part time slot that HDLC unit 261 takies.
E1 transceiver 141 is used to receive the PCM sign indicating number from transparent transmission unit 251, and it is encoded to the HDB3 sign indicating number and sends to E1 transceiver 142 by transport module 103; E1 transceiver 141 also is used to receive the HDB3 sign indicating number from E1 transceiver 142 that transmits by transport module 103, and it is decoded as the PCM sign indicating number and is sent to transparent transmission unit 251.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is detected and comprise that crc error detects and the frame losing error detection, below is the idiographic flow of these two kinds of detections, wherein comprises that with BTS side interface module 201 situation of transparent transmission module 251 is an example.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is carried out crc error detects and specifically comprises step 11～14:
11, the HDLC unit 261 of BTS side receives from the data on this side interface module 201 upper stratas and is encapsulated as HDLC test frame A, passes and sends them to HDLC unit 132 by transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 successively;
12, the HDLC unit 132 of BSC side detects whether the HDLC test frame A of its receptions is the HDLC test frame A ' that crc error is arranged, if, then execution in step 13 and subsequent step thereof; Otherwise confirm that this interface is correct, process ends;
13, this is preserved in HDLC unit 132 the HDLC test frame A ' of crc error, BTS side HDLC unit 261 obtains and generates the HDLC verification frame A ' identical with this HDLC test frame A ', and sends them to HDLC unit 132 by transparent transmission unit 251, E1 transceiver 141, transport module 103 and E1 transceiver 142 biographies successively;
14, whether the HDLC check frame A ' of BSC side HDLC unit 132 its receptions of comparison is identical with the HDLC test frame A ' of its preservation, if the two is identical, then confirm BTS side HDLC unit 261 mistakes, confirm that transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and HDLC unit 132 and the line between them are correct; If the two difference is then confirmed the one or more or Miswire between them in transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and the HDLC unit 132.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is carried out the frame losing error detection specifically comprises:
21, the HDLC unit 261 of BTS side receives from the data on this side interface module 201 upper stratas and is encapsulated as HDLC test frame B, passes and sends them to HDLC unit 132 by transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 successively;
22, the HDLC unit 132 of BSC side detects whether the HDLC test frame B of its receptions is the HDLC test frame B ' that the frame losing mistake is arranged, if, then execution in step 23 and subsequent step thereof, otherwise confirm that this interface is correct, process ends;
23, this is preserved in HDLC unit 132 the HDLC test frame B ' of frame losing mistake, BTS side HDLC unit 261 obtains the HDLC verification frame B ' identical with HDLC test frame B ' with generation, and sends them to HDLC unit 132 by transparent transmission unit 251, E1 transceiver 141, transport module 103 and E1 transceiver 142 biographies successively;
24, whether the HDLC check frame B ' of HDLC unit 132 its receptions of comparison of BSC side is identical with the HDLC test frame B ' of its preservation, if the two is identical, then confirm BTS side HDLC unit 261 mistakes, confirm that transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and HDLC unit 132 and the line between them are correct; If the two difference is then confirmed the one or more or Miswire between them in transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and the HDLC unit 132.
Embodiment two: in the BSC of present embodiment side, use the HDLC unit of realizing, can generate and send any HDLC frame by the direct treatment facility of this side CPU to replace HDLC of the prior art unit.
Fig. 3 is the structure chart of the BTS-BSC interface of the embodiment of the invention two, and the BTS-BSC interface 300 of the embodiment of the invention two comprises: the BTS side interface module 101 that includes HDLC unit 131 and E1 transceiver 141; The BSC side interface module 302 that includes E1 transceiver 142 and HDLC unit 362; Be used for 302 transport modules of communicating by letter 103 of BTS side interface module 101 and BSC side interface module.
Wherein, the E1 transceiver 142 of BSC side interface module 302 is realized by BSC side CPU external equipment, and HDLC unit 362 is realized by the direct treatment facility of BSC side CPU.BSC side interface module 302 also can further comprise the transparent transmission unit 352 of being realized, be used for transparent data by the CPU external equipment, also we can say, transparent transmission unit 352 can be used as by the HDLC unit 362 of the direct treatment facility realization of CPU with by the transmission channel between the E1 transceiver 142 of CPU external equipment realization and exists, and it can play the effect of contact CPU and external equipment.For the BTS side, compared with prior art, the HDLC unit 131 of BTS side interface module 101 and E1 transceiver 141 still realize that by BTS side CPU external equipment their function and annexation do not change yet.
HDLC unit 362 is used to receive the data from BSC side interface module 302 upper stratas, these data occupy address field, control domain and information field in the HDLC frame, HDLC unit 362 is the HDLC frame horizontal pulse modulating-coding of going forward side by side with these data encapsulation, and the PCM sign indicating number that coding is obtained sends transparent transmission unit 352 to; HDLC unit 362 also is used to receive the PCM sign indicating number from transparent transmission unit 352, and extracts address field, control domain, information field data send to BSC side interface module 302 upper stratas from the HDLC frame that decoding obtains; The HDLC unit further has test function flexibly, except that can carry out detection, the statistics HDLC frame that receives whether crc error is arranged, whether is the frame losing, can also generate and send arbitrary frame.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is detected and comprise that crc error detects and the frame losing error detection, below is the idiographic flow of these two kinds of detections, wherein comprises that with BSC side interface module 302 situation of transparent transmission module 352 is an example.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is carried out crc error detects and specifically comprises:
31, the HDLC unit 362 of BSC side receives from the data on this side interface module 302 upper stratas and is encapsulated as HDLC test frame C, passes and sends them to HDLC unit 131 by transparent transmission unit 352, E1 transceiver 142, transport module 103, E1 transceiver 141 successively;
32, the HDLC test frame C of HDLC unit 131 its receptions of detection of BTS side is not the HDLC test frame C ' that crc error is arranged, if then execution in step 33 and subsequent step thereof confirm that then this interface is correct, process ends;
33, this is preserved in HDLC unit 131 the HDLC test frame C ' of crc error, BSC side HDLC unit 362 obtains the HDLC verification frame C ' identical with HDLC test frame C ' with generation, and sends them to HDLC unit 131 by transparent transmission unit 352, E1 transceiver 142, transport module 103 and E1 transceiver 141 biographies successively;
34, whether the HDLC check frame C ' of BTS side HDLC unit 131 its receptions of comparison is identical with the HDLC test frame C ' of its preservation, if the two is identical, then confirm BSC side HDLC unit 362 mistakes, confirm that transparent transmission unit 352, E1 transceiver 142, transport module 103, E1 transceiver 141 and HDLC unit 131 and the line between them are correct; If the two difference is then confirmed the one or more or Miswire between them in transparent transmission unit 352, E1 transceiver 142, transport module 103, E1 transceiver 141 and the HDLC unit 131.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is carried out the frame losing error detection specifically comprises:
41, the HDLC unit 362 of BSC side receives from the data on this side interface module 302 upper stratas and is encapsulated as HDLC test frame D, passes and sends them to HDLC unit 131 by transparent transmission unit 352, E1 transceiver 142, transport module 103, E1 transceiver 141 successively;
42, the HDLC unit 131 of BTS side detects whether the HDLC test frame D of its receptions is HDLC test frame D ' that the frame losing mistake is arranged, if, then execution in step 43 and subsequent step thereof, otherwise confirm that this interface is correct, process ends;
43, this is preserved in HDLC unit 131 the HDLC test frame D ' of frame losing mistake, BSC side HDLC unit 362 obtains the HDLC verification frame D ' identical with HDLC test frame D with generation, and sends them to HDLC unit 131 by transparent transmission unit 352, E1 transceiver 142, transport module 103 and E1 transceiver 141 biographies successively;
44, whether the HDLC check frame D ' of BTS side HDLC unit 131 its receptions of comparison is identical with the HDLC test frame D ' of its preservation, if the two is identical, then confirm BSC side HDLC unit 362 mistakes, confirm that transparent transmission unit 352, E1 transceiver 142, transport module 103, E1 transceiver 141 and HDLC unit 131 and the line between them are correct; If the two difference is then confirmed the one or more or Miswire between them in transparent transmission unit 352, E1 transceiver 142, transport module 103, E1 transceiver 141 and the HDLC unit 131.
Embodiment three: in the BTS of present embodiment side, use the HDLC unit of realizing, can generate and send arbitrary frame by the direct treatment facility of this side CPU to replace HDLC of the prior art unit; In the BSC side, use the HDLC unit of realizing, can generate and send arbitrary frame by the direct treatment facility of this side CPU to replace HDLC of the prior art unit.
Fig. 4 is the structure chart of the BTS-BSC interface of the embodiment of the invention three, and the BTS-BSC interface 400 of the embodiment of the invention three comprises: the BTS side interface module 201 that includes E1 transceiver 141 and HDLC unit 261; The BSC side interface module 302 that includes E1 transceiver 142 and HDLC unit 362; Be used for 302 transport modules of communicating by letter 103 of BTS side interface module 201 and BSC side interface module.
Wherein, the E1 transceiver 141 of BTS side interface module 201 is realized by BTS side CPU external equipment, and HDLC unit 261 is realized by the direct treatment facility of BTS side CPU.BTS side interface module 201 also can further comprise the transparent transmission unit 251 of being realized, be used for transparent data by the CPU external equipment, also we can say, transparent transmission unit 251 can be used as by the HDLC unit 261 of the direct treatment facility realization of CPU with by the transmission channel between the E1 transceiver 141 of CPU external equipment realization and exists, and it can play the effect of contact CPU and external equipment.
HDLC unit 261 is used to receive the data from BTS side interface module 201 upper stratas, these data occupy address field, control domain and information field in the HDLC frame, HDLC unit 261 is the HDLC frame horizontal pulse modulating-coding of going forward side by side with these data encapsulation, and the PCM sign indicating number that coding is obtained sends transparent transmission unit 251 to; HDLC unit 261 also is used to receive the PCM sign indicating number from transparent transmission unit 251, and extracts address field, control domain, information field data send to BTS side interface module 201 upper stratas from the HDLC frame that decoding obtains; The HDLC unit further has test function flexibly, except that can carry out detection, the statistics HDLC frame that receives whether crc error is arranged, whether is the frame losing, can also generate and send arbitrary frame.
Transparent transmission unit 251 is used to receive from the PCM sign indicating number of HDLC unit 261 and sends to E1 transceiver 141; Transparent transmission unit 251 also is used to receive from the PCM sign indicating number of E1 transceiver 141 and sends to HDLC unit 261, the data of 261 transmitting-receivings only take under the situation of E1 transceiver 141 part time slots in the HDLC unit, when transparent transmission module 251 receives data from the E1 transceiver, only extract the data on the part time slot that HDLC unit 261 takies.
Accordingly, the E1 transceiver 142 of BSC side interface module 302 is realized by BSC side CPU external equipment, and HDLC unit 362 is realized by the direct treatment facility of BSC side CPU.The data of 362 transmitting-receivings only take under the situation of E1 transceiver 142 part time slots in the HDLC unit, BSC side interface module 302 also can further comprise the transparent transmission unit 352 of being realized, be used for transparent data by the CPU external equipment, also we can say, transparent transmission unit 352 can be used as by the HDLC unit 362 of the direct treatment facility realization of CPU with by the transmission channel between the E1 transceiver 142 of CPU external equipment realization and exists, and it can play the effect of contact CPU and external equipment.
HDLC unit 362 is used to receive the data from BSC side interface module 302 upper stratas, these data occupy address field, control domain and information field in the HDLC frame, HDLC unit 362 is the HDLC frame horizontal pulse modulating-coding of going forward side by side with these data encapsulation, and the PCM sign indicating number that coding is obtained sends transparent transmission unit 352 to; HDLC unit 362 also is used to receive the PCM sign indicating number from transparent transmission unit 352, and extracts address field, control domain, information field data send to BSC side interface module 302 upper stratas from the HDLC frame that decoding obtains; The HDLC unit further has test function flexibly, except that can carry out detection, the statistics HDLC frame that receives whether crc error is arranged, whether is the frame losing, can also generate and send arbitrary frame.
Because in the present embodiment, BTS side interface module 201 and BSC side interface module 302 are symmetrical, so BTS side and BSC side can send the HDLC frame as originating party respectively this BTS-BSC interface 400 is detected, below be example with the BTS side as the situation of originating party, the BSC side is as the situation of originating party similarly.
Utilize the HDLC frame that the BTS-BSC interface of present embodiment is detected and comprise that crc error detects and the frame losing error detection, below be the idiographic flow of these two kinds of detections, wherein comprise that with BTS side interface module 201 transparent transmission module 251, BSC side interface module 302 comprise that the situation of transparent transmission module 352 is an example.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is carried out crc error detects and specifically comprises:
51, the HDLC unit 261 of BTS side receives from the data on this side interface module 201 upper stratas and is encapsulated as HDLC test frame E, passes and sends them to HDLC unit 362 by transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142, transparent transmission module 352 successively;
52, the HDLC unit 362 of BSC side detects whether the HDLC test frame E of its receptions is HDLC test frame E ' that crc error is arranged, if, then execution in step 53 and subsequent step thereof, otherwise confirm that this interface is correct, process ends;
53, this is preserved in HDLC unit 362 the HDLC test frame E ' of crc error, BTS side HDLC unit 261 obtains the HDLC verification frame E ' identical with HDLC test frame E ' with generation, passes by transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and transparent transmission unit 352 successively and sends them to HDLC unit 362;
54, whether the HDLC check frame E ' of BSC side HDLC unit 362 its receptions of comparison is identical with the HDLC test frame E ' of its preservation, if the two is identical, then confirm BTS side HDLC unit 261 mistakes, confirm that transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142, transparent transmission unit 352 and HDLC unit 362 and the line between them are correct; If the two difference is then confirmed the one or more or Miswire between them in transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142, transparent transmission unit 352 and the HDLC unit 362.
Utilizing the HDLC frame that the BTS-BSC interface of present embodiment is carried out the frame losing error detection specifically comprises:
61, the HDLC unit 261 of BTS side receives from the data on this side interface module 201 upper stratas and is encapsulated as HDLC test frame F, passes by transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and transparent transmission unit 352 successively and sends them to HDLC unit 362;
62, the HDLC unit 362 of BSC side detects whether the HDLC test frame F of its receptions is HDLC test frame F ' that the frame losing mistake is arranged, if, then execution in step 63 and subsequent step thereof, otherwise confirm that this interface is correct, process ends;
63, this is preserved in HDLC unit 362 the HDLC test frame F ' of frame losing mistake, BTS side HDLC unit 261 obtains the HDLC verification frame F ' identical with HDLC test frame F ' with generation, and sends them to HDLC unit 362 by transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and transparent transmission unit 352 biographies successively;
64, whether the HDLC check frame F ' of HDLC unit 362 its receptions of comparison of BSC side is identical with the HDLC test frame F ' of its preservation, if the two is identical, then confirm BTS side HDLC unit 261 mistakes, confirm that transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142, transparent transmission unit 352 and HDLC unit 362 and the line between them are correct; If the two difference is then confirmed the one or more or Miswire between them in transparent transmission unit 251, E1 transceiver 141, transport module 103, E1 transceiver 142 and the HDLC unit 132.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1, a kind of base station BTS-base station controller BSC interface, this interface comprise BTS side interface module and BSC side interface module,
BTS side interface module comprises interconnective BTS side HDLC unit and BTS side E1 transceiver, and this BTS side HDLC unit is used for encapsulation and decapsulation HDLC frame data, and this BTS side E1 transceiver is used to receive and dispatch the HDLC frame data;
BSC side interface module comprises interconnective BSC side HDLC unit and BSC side E1 transceiver, and this BSC side HDLC unit is used for encapsulation and decapsulation HDLC frame data, and this BSC side E1 transceiver is used to receive and dispatch the HDLC frame data;
And be connected the transport module that is used for BTS side and the transmission of BSC side HDLC frame data between BTS side E1 transceiver and the BSC side E1 transceiver, it is characterized in that:
In described BTS side HDLC unit and the described BSC side HDLC unit at least one is arranged in its side central processing unit CPU, can generates and send arbitrary frame.
2, BTS-BSC interface as claimed in claim 1 is characterized in that, at least one in described BTS side HDLC unit and the described BSC side HDLC unit is arranged in its side CPU, what can generate and send arbitrary frame is BTS side HDLC unit; Described interconnective BTS side HDLC unit and BTS side E1 transceiver interconnect by the transparent transmission unit.
3, BTS-BSC interface as claimed in claim 1 is characterized in that, at least one in described BTS side HDLC unit and the described BSC side HDLC unit is arranged in its side CPU, what can generate and send arbitrary frame is BSC side HDLC unit; Described interconnective BSC side HDLC unit and BSC side E1 transceiver interconnect by the transparent transmission unit.
4, BTS-BSC interface as claimed in claim 1, it is characterized in that at least one in described BTS side HDLC unit and the described BSC side HDLC unit is arranged in its side CPU, what can generate and send arbitrary frame is BTS side HDLC unit and BSC side HDLC unit; Described interconnective BTS side HDLC unit and BTS side E1 transceiver interconnect by the transparent transmission unit; Described interconnective BSC side HDLC unit and BSC side E1 transceiver interconnect by the transparent transmission unit.
5, a kind of method of base stations detected BTS-base station controller BSC interface is characterized in that, the process that interface detects may further comprise the steps:
A HDLC unit that can generate and send arbitrary frame in A, BTS side HDLC unit and the BSC side HDLC unit, send HDLC test frame X by this side E1 transceiver, transport module and opposite side E1 transceiver to the 2nd HDLC unit of opposite side successively, whether the HDLC test frame X that the 2nd HDLC unit detects its reception is vicious HDLC test frame X ', if, execution in step B then, otherwise confirm that this interface is correct, process ends;
This HDLC test frame X ' is preserved in B, the 2nd HDLC unit, the one HDLC unit obtains the HDLC verification frame X ' identical with HDLC test frame X ' with generation, and send this HDLC verification frame X ' by this side E1 transceiver, transport module and opposite side E1 transceiver to the 2nd HDLC unit successively, whether the HDLC verification frame X ' that the 2nd HDLC unit compares its reception is identical with the HDLC test frame X ' of its preservation, if, confirm that then a HDLC unit is incorrect, other parts are correct in this interface, otherwise confirm that other parts are incorrect in this interface.
6, method as claimed in claim 5 is characterized in that, described mistake is a verification territory crc error.
7, method as claimed in claim 5 is characterized in that, described mistake is the frame losing mistake.
8, as each described method in the claim 5～7, it is characterized in that, a HDLC unit that can generate and send arbitrary frame in described BTS side HDLC unit and the BSC side HDLC unit is BTS side HDLC unit, and described the 2nd HDLC unit is BSC side HDLC unit;
Among described steps A and the B, BTS side HDLC unit sends HDLC test frame X and HDLC verification frame X ' by this side transparent transmission unit, E1 transceiver, transport module and BSC side E1 transceiver to BSC side HDLC unit successively.
9, as each described method in the claim 5～7, it is characterized in that, a HDLC unit that can generate and send arbitrary frame in described BTS side HDLC unit and the BSC side HDLC unit is BSC side HDLC unit, and described the 2nd HDLC unit is BTS side HDLC unit;
Among described steps A and the B, BSC side HDLC unit sends HDLC test frame X and HDLC verification frame X ' by this side transparent transmission unit, E1 transceiver, transport module and BTS side E1 transceiver to BTS side HDLC unit successively.
10, as each described method in the claim 5～7, it is characterized in that the HDLC unit that in described BTS side HDLC unit and the BSC side HDLC unit one could generate and send arbitrary frame is any in BTS side HDLC unit and the BSC side HDLC unit;
Among described steps A and the B, a HDLC unit sends HDLC test frame X and HDLC verification frame X ' by this side transparent transmission unit, E1 transceiver, transport module and opposite side E1 transceiver to the 2nd HDLC unit successively.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101080606A CN100539492C (en) | 2005-09-29 | 2005-09-29 | A kind of base-station, base-station controller interface and detect the method for this interface |
| PCT/CN2006/002263 WO2007036128A1 (en) | 2005-09-29 | 2006-09-01 | A bts-bsc interface and a method for detecting the interface |
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| CNB2005101080606A CN100539492C (en) | 2005-09-29 | 2005-09-29 | A kind of base-station, base-station controller interface and detect the method for this interface |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257444B (en) * | 2008-03-25 | 2010-10-27 | 华为技术有限公司 | System, device and method for transmitting packet data |
| CN101309263B (en) * | 2008-06-02 | 2011-03-30 | 华为技术有限公司 | Data transmission method, apparatus and system |
| CN107872358A (en) * | 2016-09-23 | 2018-04-03 | 北京遥感设备研究所 | A kind of automation simulation method of testing for HDLC protocol |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112532618B (en) * | 2020-11-26 | 2023-02-28 | 国网山西省电力公司电力科学研究院 | Non-transparent protocol conversion method and device for joint debugging test of stability control test system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100337639B1 (en) * | 1999-08-16 | 2002-05-23 | 오길록 | ATM interface module for the base station controller in IMT-2000 network |
| KR20010057299A (en) * | 1999-12-21 | 2001-07-04 | 박종섭 | Serve channel control apparatus and method between base station and base station controller for ATM system |
| KR20030085394A (en) * | 2002-04-30 | 2003-11-05 | 주식회사 현대시스콤 | Apparatus for interfacing between BSC and BTS in a mobile communication inbuilding system |
| CN1545288B (en) * | 2003-11-22 | 2011-06-22 | 中兴通讯股份有限公司 | A method for external link identification mapping and processing within base station |
-
2005
- 2005-09-29 CN CNB2005101080606A patent/CN100539492C/en active Active
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2006
- 2006-09-01 WO PCT/CN2006/002263 patent/WO2007036128A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257444B (en) * | 2008-03-25 | 2010-10-27 | 华为技术有限公司 | System, device and method for transmitting packet data |
| CN101309263B (en) * | 2008-06-02 | 2011-03-30 | 华为技术有限公司 | Data transmission method, apparatus and system |
| CN107872358A (en) * | 2016-09-23 | 2018-04-03 | 北京遥感设备研究所 | A kind of automation simulation method of testing for HDLC protocol |
| CN107872358B (en) * | 2016-09-23 | 2020-12-11 | 北京遥感设备研究所 | Automatic simulation test method for HDLC protocol |
Also Published As
| Publication number | Publication date |
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| WO2007036128A1 (en) | 2007-04-05 |
| CN100539492C (en) | 2009-09-09 |
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