CN100407666C - Wideband wireless switch-in equipment chain circuit loop testing method - Google Patents
Wideband wireless switch-in equipment chain circuit loop testing method Download PDFInfo
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- CN100407666C CN100407666C CN200510080166XA CN200510080166A CN100407666C CN 100407666 C CN100407666 C CN 100407666C CN 200510080166X A CN200510080166X A CN 200510080166XA CN 200510080166 A CN200510080166 A CN 200510080166A CN 100407666 C CN100407666 C CN 100407666C
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Abstract
A loop back testing method of BWA device link includes carrying out configuration of BWA device up/down link parameter and utilizing configured parameter to let data message carry out direct loop back in BWA device then utilizing data message of said loop back to carry out loop back test of BWA device link.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of loop testing method of wideband wireless switch-in equipment chain circuit.
Background technology
The broadband access method that broadband wireless access BWA (Broadband wireless access, broadband wireless access) equipment can be provided convenience for the user.Broadband wireless access equipment based on proprietary protocol is arranged at present, the broadband wireless access equipment based on standard agreement is also arranged.The broadband wireless access equipment of IEEE (IEEE) 802.16 standard definitions is subclass of the series standard of wireless access wide band technology.Comprise WIMAX (global interactive inserting of microwave) equipment in the BWA equipment.
A concrete BWA equipment such as SS (subscriber station) or BS (base station), is divided from detailed functions, all comprises MAC (medium access control), base band PHY (physical layer equipment), three major parts of middle radio frequency at least.Usually we in the device design process, all between various piece, design some superfluous in loop fuction, with the debugging that makes things convenient for equipment and the location of problem.But concerning BWA equipment, because the parameter difference of the up-downgoing of stipulating in the agreement makes us directly to return a data message loopback.Test for functions of the equipments can only be by BS and SS pairing test, and BS and SS pairing joint test schematic diagram are as shown in Figure 1.
In BS shown in Figure 1 and SS pairing joint test process:
The CPU of BS side at first initiates test, and when SS provided the FE interface, data message was by the Ls1 interface and the Ls2 interface loopback of SS side; When SS provided the E1 interface, data message was by the Ls3 interface and the Ls4 interface loopback of SS side.Then, the data message of the CPU of BS side statistics loopback, and will send message and the loopback message compares, and if it is identical with loopback message number to send message, and there is not mistake, then test and pass through.In above-mentioned test process, BS does not need the loopback message carried out special processings such as parameter conversion.
In the prior art, also in BWA equipment, directly do not carry out the solution of loopback test.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of loop testing method of broadband wireless access equipment, thereby realized in BWA equipment, directly carrying out loopback test.
The objective of the invention is to be achieved through the following technical solutions:
A kind of loop testing method of wideband wireless switch-in equipment chain circuit comprises:
A, the parameter of the up-downgoing of broadband wireless access BWA equipment is configured, and utilizes the parameter of configuration, make data message direct loopback in BWA equipment;
B, utilize the data message of described loopback, the link of BWA equipment is carried out loopback test.
Described steps A specifically comprises:
The central processor CPU configuration media access control MAC layer of A1, BWA equipment is a test pattern, the MAC layer of BWA equipment disposes all list items of the descending connection identifiers CID of the data message that receives in up, and the up-downgoing encryption and decryption of described CID correspondence performance configuration must be mated;
A2, with the interface loopback of described data message at MAC layer and base band physical layer PHY, perhaps loopback in MAC layer inter-process module.
Described steps A specifically comprises:
The CPU configuration MAC layer of A3, BWA equipment is a test pattern, and configuration base band PHY layer is a test pattern, if the MAC layer of BWA equipment and base band PHY layer are under the test pattern, then the transmitter side of BWA equipment sends the data message of short lead code; Otherwise, the data message of transmission long preambles sign indicating number;
The base band PHY layer of A4, BWA equipment generates different satisfactory random numbers at random, and gives each up-downgoing that needs configuration corresponding register the corresponding configuration of random number;
A5, utilize the described corresponding register of up-downgoing that has carried out configuration, with the interface loopback of data message between base band PHY layer and middle radio frequency, perhaps in base band PHY layer inter-process module loopback.
The corresponding register of described up-downgoing comprises scrambler register, reed-solomon-convolutional encoding register and the modulation register of up-downgoing.
Described steps A 5 also comprises:
When BWA equipment has a more than base band PHY, can make data message loopback between different base band PHY by the routing node of base band PHY.
Described step B specifically comprises:
The CPU of BWA equipment adds up the data message of loopback, and will send message and the loopback message compares, if it is identical with loopback message number to send message, and does not have mistake, and then test result is for passing through; Otherwise test result is not for passing through.
Described step B also comprises:
When test result is obstructed out-of-date, can be by data message be carried out loopback at the different loopback points place of BWA equipment, the link of BWA equipment is carried out fault location.
Described step B also comprises:
When the interface loopback of data message at MAC layer and base band PHY layer, test result is obstructed out-of-date, then the fault of the link of BWA equipment in the MAC layer,
Perhaps,
When the interface loopback of data message at MAC layer and base band PHY layer, test result is for passing through, and, when the interface loopback of data message between base band PHY layer and middle radio frequency, test result is obstructed out-of-date, and then the fault of the link of BWA equipment is in base band PHY layer;
Perhaps,
When the interface loopback of data message between base band PHY layer and middle radio frequency, test result is for passing through, and, when data message in the port of middle radio frequency by the cable loopback, test result is obstructed out-of-date, then the fault of the link of BWA equipment is in middle radio frequency.
As seen from the above technical solution provided by the invention, the present invention is with data message direct loopback in the MAC of BWA equipment layer or base band PHY layer of BWA equipment, utilize the data message of loopback that BWA equipment is carried out loopback test, thereby realized in BWA equipment, directly carrying out loopback test, simplify the test process of BWA equipment widely, and reduced the positioning problems difficulty in the test process.
Description of drawings
Fig. 1 is BS and SS pairing joint test schematic diagram;
The schematic diagram of data message loopback in the MAC of BWA equipment layer or base band PHY layer when Fig. 2 is single PHY;
The schematic diagram of data message loopback in the base band PHY of BWA equipment layer when Fig. 3 is many PHY;
Fig. 4 is for carrying out the concrete process chart of positioning problems to BWA equipment.
Embodiment
The invention provides a kind of loop testing method of wideband wireless switch-in equipment chain circuit.Core of the present invention is: the parameter to the up-downgoing of data message disposes accordingly, makes data message loopback in the MAC of BWA equipment layer or base band PHY layer.
The present invention is for can be better to the BWA testing equipment, a test pattern register need be set in BWA equipment, and according to this test pattern register, judge that BWA equipment is under the test pattern, be the CPU of BWA equipment when MAC layer and base band PHY layer are configured to test pattern, just use loop fuction that the data message is carried out loopback.
Describe the present invention in detail below in conjunction with accompanying drawing, during single PHY the schematic diagram of data message loopback in the MAC of BWA equipment layer or base band PHY layer as shown in Figure 2, comprise among Fig. 2 data message at MAC layer loopback and data message two kinds of data message loopbacks of loopback scheme in base band PHY layer.
Below we at first discuss under test pattern, data message is in the situation of MAC layer loopback:
When data message during at MAC layer loopback, need CID (connection identifier) list item of up-downgoing data message be configured, the CID of up-downgoing data message is matched each other.For example, if the CID of the data message of descending transmission configuration is 1,000 0,000 0,000 1111, the up CID that just must dispose is all list items of 1,000 0,000 0,000 1111.The up-downgoing encryption and decryption performance configuration of this CID correspondence must be mated, and makes looping back data can pass through encryption check.
This data message just can successfully carry out loopback at the MAC layer.Specifically can also can then, this data message be handed to the CPU of BWA equipment at the interface loopback of MAC and base band PHY at MAC inter-process module loopback.
Below we discuss under test pattern, data message is in the situation of base band PHY layer loopback:
The base band of BWA equipment can have a PHY, also a plurality of PHY can be arranged.When data message during at base band PHY layer loopback, the modulating-coding rate modulation that must be configured to identical numerical value, up-downgoing RS-CC (reed-solomon-convolutional encoding) to the initial value of up-downgoing Randomization (scrambler) register is identical value, and the modulation system of up-downgoing Modulation (modulation) is configured to identical value.The process of configuration is as follows:
1, Randomization is carried out parameter configuration.Produce a seed at random, then, up-downgoing Randomization register initial value is configured to this seed.This layoutprocedure can be represented by following program:
If (test_mode_reg) { ' judges whether BWA equipment is in test pattern
Reg[15:0]=randm; ' produce a seed at random
Up_Randomization_reg=Reg[15:0]; ' with up Randomization register configuration is this seed
Down_Randomization_reg=Reg[15:0]; ' with descending Randomization register configuration is this seed
}
2, RS-CC and Modulation are carried out parameter configuration.Only need do the configuration of random number to up-downgoing RS-CC and Modulation register.Produce the random number of a scope between 0～6 at random, (because only having stipulated seven kinds of modulation coding modes in the 16d agreement) disposes this random number respectively the corresponding register to up-downgoing RS-CC and Modulation module then.This layoutprocedure can be represented by following program:
If (test_mode_reg) { ' judges whether BWA equipment is in test pattern
Reg=(randm) %7; ' produce the random number between 0～6 at random
Up_RS_CC_reg=Reg; ' with up RS-CC register configuration is this random number
Down_RS_CC_reg=Reg; ' with descending RS-CC register configuration is this random number
Up_Modulation_reg=Reg; ' with up Modulation register configuration is this random number
Down_Modulation_reg=Reg; ' with descending Modulation register configuration is this random number
}
The uplink data messages of BWA equipment is short preamble (lead code), and downlink data message is long preamble.Therefore, when data message during, also need to solve the inconsistent problem of preamble of up-downgoing data message at base band PHY layer loopback.So, when design BWA equipment, need design two kinds of different preamble at the transmitter side of this equipment, long preamble and short preamble, under test pattern, transmitter side sends the data message of weak point preamble; Under mode of operation, transmitter side sends the data message of long preamble.Like this under test pattern,, just do not need the preamble of this data message is done any special processing when data message during at base band PHY layer loopback.The above-mentioned process that the preamble of data message is handled can be represented by following program:
If (test_mode_reg) { ' judges whether BWA equipment is in test pattern
Out_preamble=Short_preamble; ' if then send the data message of lacking preamble
}
else{
Out_preamble=Long_preamble; ' if not, then send the data message of long preamble
}
When the base band of BWA equipment had a plurality of PHY, the common public radio interface of base band back had a plurality of exchange contacts.The schematic diagram of data message loopback in the base band PHY of BWA equipment layer as shown in Figure 3 during many PHY.Under the situation of many base band PHY shown in Figure 3, the switching node of base band PHY back can be intercoursed easily, such as, can be with A node switching arbitrary node among B, C, D, E, the F, also can the A node directly be looped back to own itself.Also can carry out same operation to B, C, D, E, F node.Node switching recited above can be represented by following program:
switch(A_switch_to_reg){
Case A:A_data=A_data; ' the A node is arrived in the A node switching
Case B:B_data=A_data; ' the B node is arrived in the A node switching
Case C:C_data=A_data; ' the C node is arrived in the A node switching
Case D:D_data=A_data; ' the D node is arrived in the A node switching
Case E:E_data=A_data; ' the E node is arrived in the A node switching
Case F:F_data=A_data; ' the F node is arrived in the A node switching
Default:null; ' the acquiescence node is empty
}
switch(B_switch_to_reg){
Case A:A_data=B_data; ' the A node is arrived in the B node switching
Case B:B_data=B_data; ' the B node is arrived in the B node switching
Case C:C_data=B_data; ' the C node is arrived in the B node switching
Case D:D_data=B_data; ' the D node is arrived in the B node switching
Case E:E_data=B_data; ' the E node is arrived in the B node switching
Case F:F_data=B_data; ' the F node is arrived in the B node switching
Default:null; ' the acquiescence node is empty
}
……
……
switch(F_switch_to_reg){
Case A:A_data=F_data; ' the A node is arrived in the F node switching
Case B:B_data=F_data; ' the B node is arrived in the F node switching
Case C:C_data=F_data; ' the C node is arrived in the F node switching
Case D:D_data=F_data; ' the D node is arrived in the F node switching
Case E:E_data=F_data; ' the E node is arrived in the F node switching
Case F:F_data=F_data; ' the F node is arrived in the F node switching
Default:null; ' the acquiescence node is empty
}
After having carried out parameter configuration recited above, data message just can successfully carry out loopback at base band PHY layer.Specifically can be at base band PHY inter-process module loopback, also can be at the interface loopback between base band PHY and the middle radio frequency, the data message that carries out loopback at base band PHY layer passes through the MAC layer again, and the MAC layer is through after the respective handling handing to this data message the CPU of BWA equipment.
When data message behind MAC layer or base band PHY layer loopback, the CPU of BWA equipment need add up the data message of loopback, and will send message and the loopback message compares, if it is identical with loopback message number to send message, and do not have mistake, then test result is for passing through; Otherwise test result is not for passing through.
When test result is obstructed out-of-date, can continue to utilize data message loop-back process recited above, the link of BWA equipment is carried out positioning problems.Such as, utilizing the data message loopback, the concrete process chart that the BWA equipment shown in Fig. 2 is carried out positioning problems is as shown in Figure 4.
In positioning flow shown in Figure 4, comprise that data message carries out three kinds of loopback schemes of loopback respectively at the L1 of BS side interface, L2 interface and Lx3 port.Wherein, carrying out loopback at L1 interface, L2 interface is internal loopback, can determine whether loopback by the CPU configuration.Carrying out loopback at the Lx3 port is the port loopback, need be to use the cable loopback in the port.
In positioning flow shown in Figure 4, only design a loopback in the MAC side, also be loopback of design in the PHY side.When flow process began, it was test pattern that the CPU of BWA equipment B S side at first needs to dispose the MAC layer, and configuration base band PHY layer is a test pattern.
At first data message is carried out loopback at the Lx3 port, then, the CPU of BWA equipment B S side adds up the data message of loopback, and will send message and the loopback message compares, if it is identical with loopback message number to send message, and do not have mistake, then test result is for passing through, and the link of BWA equipment is no problem; Otherwise test result is not for passing through.
When data message carries out loopback at the Lx3 port, test result is obstructed out-of-date, and the CPU of BWA equipment B S side is configured again, and data message is carried out loopback at the L2 interface.Then, CPU adds up the data message of loopback, and will send message and the loopback message compares, if it is identical with loopback message number to send message, and does not have mistake, and then the positioning problems of BWA device link is between L2 interface and Lx3 port; Otherwise CPU is configured again, and data message is carried out loopback at the L1 interface.Then, CPU will send message and the loopback message compares, if it is identical with loopback message number to send message, and does not have mistake, and then the positioning problems of BWA device link is between L1 interface and L2 interface; Otherwise, in the MAC layer of the positioning problems of BWA device link before the L1 interface.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
1. the loop testing method of a wideband wireless switch-in equipment chain circuit is characterized in that, comprising:
A, the parameter of the up-downgoing of broadband wireless access BWA equipment is configured, and utilizes the parameter of configuration, make data message direct loopback in BWA equipment;
B, utilize the data message of described loopback, the link of BWA equipment is carried out loopback test.
2. according to the loop testing method of the described wideband wireless switch-in equipment chain circuit of claim 1, it is characterized in that described steps A specifically comprises:
The central processor CPU configuration media access control MAC layer of A1, BWA equipment is a test pattern, the MAC layer of BWA equipment disposes all list items of the descending connection identifiers CID of the data message that receives in up, and the up-downgoing encryption and decryption of described CID correspondence performance configuration must be mated;
A2, with the interface loopback of described data message at MAC layer and base band physical layer PHY, perhaps loopback in MAC layer inter-process module.
3. according to the loop testing method of the described wideband wireless switch-in equipment chain circuit of claim 1, it is characterized in that described steps A specifically comprises:
The CPU configuration MAC layer of A3, BWA equipment is a test pattern, and configuration base band PHY layer is a test pattern, if the MAC layer of BWA equipment and base band PHY layer are under the test pattern, then the transmitter side of BWA equipment sends the data message of short lead code; Otherwise, the data message of transmission long preambles sign indicating number;
The base band PHY layer of A4, BWA equipment generates different satisfactory random numbers at random, and gives each up-downgoing that needs configuration corresponding register the corresponding configuration of random number;
A5, utilize the described corresponding register of up-downgoing that has carried out configuration, with the interface loopback of data message between base band PHY layer and middle radio frequency, perhaps in base band PHY layer inter-process module loopback.
4. according to the loop testing method of the described wideband wireless switch-in equipment chain circuit of claim 3, it is characterized in that the corresponding register of described up-downgoing comprises scrambler register, reed-solomon-convolutional encoding register and the modulation register of up-downgoing.
5. according to the loop testing method of the described wideband wireless switch-in equipment chain circuit of claim 3, it is characterized in that described steps A 5 also comprises:
When BWA equipment has a more than base band PHY, can make data message loopback between different base band PHY by the routing node of base band PHY.
6. according to the loop testing method of each described wideband wireless switch-in equipment chain circuit of claim 1 to 5, it is characterized in that described step B specifically comprises:
The CPU of BWA equipment adds up the data message of loopback, and will send message and the loopback message compares, if it is identical with loopback message number to send message, and does not have mistake, and then test result is for passing through; Otherwise test result is not for passing through.
7. according to the loop testing method of the described wideband wireless switch-in equipment chain circuit of claim 6, it is characterized in that described step B also comprises:
When test result is obstructed out-of-date, can be by data message be carried out loopback at the different loopback points place of BWA equipment, the link of BWA equipment is carried out fault location.
8. according to the loop testing method of the described wideband wireless switch-in equipment chain circuit of claim 7, it is characterized in that described step B also comprises:
When the interface loopback of data message at MAC layer and base band PHY layer, test result is obstructed out-of-date, then the fault of the link of BWA equipment in the MAC layer,
Perhaps,
When the interface loopback of data message at MAC layer and base band PHY layer, test result is for passing through, and, when the interface loopback of data message between base band PHY layer and middle radio frequency, test result is obstructed out-of-date, and then the fault of the link of BWA equipment is in base band PHY layer;
Perhaps,
When the interface loopback of data message between base band PHY layer and middle radio frequency, test result is for passing through, and, when data message in the port of middle radio frequency by the cable loopback, test result is obstructed out-of-date, then the fault of the link of BWA equipment is in middle radio frequency.
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| CN101505240B (en) * | 2008-02-05 | 2011-03-30 | 华为技术有限公司 | Fault detection method and apparatus |
| CN103441818B (en) * | 2013-08-27 | 2016-07-20 | 大唐移动通信设备有限公司 | The detection method of a kind of data transmission fault and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0278289A2 (en) * | 1987-02-12 | 1988-08-17 | ANT Nachrichtentechnik GmbH | Testing device for a broadband switching network |
| JPH10336123A (en) * | 1997-05-29 | 1998-12-18 | Hitachi Denshi Ltd | Loop-back test system |
| US20030067869A1 (en) * | 2001-10-05 | 2003-04-10 | Adtran, Inc. | Integrated RF loopback test apparatus for redundant data radio transceiver system |
| CN1466315A (en) * | 2002-06-05 | 2004-01-07 | 华为技术有限公司 | Method for realizing long distance controlled loopback of communication equipment |
-
2005
- 2005-06-30 CN CN200510080166XA patent/CN100407666C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0278289A2 (en) * | 1987-02-12 | 1988-08-17 | ANT Nachrichtentechnik GmbH | Testing device for a broadband switching network |
| JPH10336123A (en) * | 1997-05-29 | 1998-12-18 | Hitachi Denshi Ltd | Loop-back test system |
| US20030067869A1 (en) * | 2001-10-05 | 2003-04-10 | Adtran, Inc. | Integrated RF loopback test apparatus for redundant data radio transceiver system |
| CN1466315A (en) * | 2002-06-05 | 2004-01-07 | 华为技术有限公司 | Method for realizing long distance controlled loopback of communication equipment |
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