CN100372319C - Method for detecting link physical self ring - Google Patents
Method for detecting link physical self ring Download PDFInfo
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- CN100372319C CN100372319C CNB2005101215355A CN200510121535A CN100372319C CN 100372319 C CN100372319 C CN 100372319C CN B2005101215355 A CNB2005101215355 A CN B2005101215355A CN 200510121535 A CN200510121535 A CN 200510121535A CN 100372319 C CN100372319 C CN 100372319C
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- test pattern
- link
- data
- physical self
- time slot
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Abstract
The present invention provides a method for detecting link physical self loops. A transmitting end is filled with a test pattern in an idle bit of one time slot when data is transmitted; each link can carry out periodic detection to the bit and the time slot; whether the data received by the transmitting end is matched with the test pattern transmitted by the link can be judged; if the data is matched with the test pattern, that physical self loops occur is determined. The present invention can effectively detect the actual state of the links, and can differentiate the distinction between the normal links and physical loop back links. Thereby, the reliability of a whole system can be enhanced, which ensures that the system can continuously provide reliable services. The present invention is not only suitable for the state of clock switching, but also suitable for all the places relating to link state detection.
Description
Technical field
The present invention relates to a kind of link state detection method, relate in particular to a kind of detection method of E1 link physical self ring.
Background technology
Shown in Figure 1 is state (wherein RX1 is meant that the 1st receives link, and Rx represents to receive, and Tx1 is meant that the 1st sends link, and Tx the represents to send) signal that has multilink between two transmission equipments.In present design, need to carry out the state-detection of E1 (a kind of transmission medium) often.For example, the automatic switching procedure in IUB (interface between NodeB and the RNC) clock source is when the state of a certain E1 changes, produce fault, in the time of can't providing the clock source once more, when system need automatically switch on the normal E1, just need new Link State be detected.The state of E1 generally shows as normal, local from ring, Remote selfloop state.Present this locality needs the user to set up on their own from ring and Remote selfloop, so these two states are to carry out condition judgement by the sign of setting for the user.Whether have link loopback physically or be operated in normal condition but distinguish E1, then existing problems are merely able to adopt artificial assurance at present.
Summary of the invention
Technical problem to be solved by this invention provides a kind of detection method of link physical self ring, the present invention can judge accurately whether new link carries out physics, logic from ring, can realize differentiation, find the link of operate as normal, thereby the link after guaranteeing to switch is normal new Link State.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of detection method of link physical self ring,
Transmitting terminal is filled test pattern in certain time slot spare bits of the data that send; Every link carries out periodicity to this position of this time slot and detects; Judge whether the data that transmitting terminal receives are complementary with the test pattern that sends of controlling oneself; If be complementary, then think physical self ring to have occurred.
Described test pattern is meant the data of forming by 0,1.
Described coupling is meant data consistent or only has cyclic shift.
Correspondingly, the present invention also provides a kind of checkout gear of link physical self ring, comprising:
Filling device is used for filling test pattern in certain time slot spare bits of the data that send;
Checkout gear is used for periodically this position of this time slot being detected;
Judgment means is used to judge whether the data that receive are complementary with the test pattern that sends of controlling oneself, if be complementary, then think physical self ring to have occurred.
The present invention can use between base station, radio network controller, also can equipment for other between, as long as, can handle between the two by the E1 link transmission.
The present invention can effectively detect the time of day of link, distinguishes the difference of normal link and physics loopback link, and then has improved the reliability of total system, and the system that guaranteed can continue to provide the ability of reliable business.The present invention is not only applicable to the situation that clock switches, and the place that relates to the detection of E1 Link State all is suitable for.
Description of drawings
Fig. 1 is the view that has multilink between two transmission equipments
Fig. 2 is a pattern transmission schematic diagram of the present invention.
Embodiment
In this specific embodiment, idle bit (position) at 0 time slot of odd-numbered frame, can be to fill test pattern among any in 4 to 8, every link carries out periodicity to this position of this time slot and detects, and judges whether the data that transmitting terminal receives are complementary with the test pattern that sends of controlling oneself.If be complementary, then think physical self ring to have occurred.
At every E1 link, all can design a test pattern, as follows:
E1 numbers test pattern
No. 0 00000001
No. 1 00000011
No. 2 00000101
No. 3 00001001
No. 4 00010001
No. 5 00000111
No. 6 00001101
No. 7 00001011
Send out the pattern (in this specific embodiment, pattern is 8 data, and every frame is filled data, and 8 frames are finished the transmission of a pattern) of each E1 by high level, wait for 100MS, the data of relatively receiving are if the pattern unanimity is just thought loopback.Pattern is consistent to be that expression can have skew, as long as look the same.Shown in Figure 2 is that the test pattern according to No. 0 E1 sends bit stream, the situation of the pattern that receives under the situation of physical self ring:
00000001
00000010
00000100
00001000
00010000
00100000
01000000
10000000
All be expressed as No. 0 characteristic test pattern.Promptly think and carried out ring certainly physically.
Correspondingly, the present invention also provides a kind of checkout gear of E1 link physical self ring, comprising:
Filling device is used for filling test pattern in certain time slot spare bits of the data that send;
Checkout gear is used for periodically this position of this time slot being detected;
Judgment means is used to judge whether the data that receive are complementary with the test pattern that sends of controlling oneself, if be complementary, then think physical self ring to have occurred.
Claims (6)
1. the detection method of a link physical self ring is characterized in that,
Transmitting terminal is filled test pattern in certain time slot spare bits of the data that send; Every link carries out periodicity to this position of this time slot and detects; Judge whether the data that transmitting terminal receives are complementary with the test pattern that sends of controlling oneself; If be complementary, then think physical self ring to have occurred.
2. the detection method of link physical self ring according to claim 1 is characterized in that, described test pattern is meant the data of forming by 0,1.
3. the detection method of link physical self ring according to claim 2 is characterized in that, described coupling is meant data consistent or only has cyclic shift.
4. the detection method of link physical self ring according to claim 1 and 2 is characterized in that, transmitting terminal is filled test pattern in the spare bits of 0 time slot of odd-numbered frame.
5. the detection method of link physical self ring according to claim 4 is characterized in that, fills test pattern among transmitting terminal any in 4 to 8.
6. the checkout gear of a link physical self ring is characterized in that, comprising:
Filling device is used for filling test pattern in certain time slot spare bits of the data that send;
Checkout gear is used for periodically this position of this time slot being detected;
Judgment means is used to judge whether the data that receive are complementary with the test pattern that sends of controlling oneself, if be complementary, then think physical self ring to have occurred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101215355A CN100372319C (en) | 2005-12-31 | 2005-12-31 | Method for detecting link physical self ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101215355A CN100372319C (en) | 2005-12-31 | 2005-12-31 | Method for detecting link physical self ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1859230A CN1859230A (en) | 2006-11-08 |
| CN100372319C true CN100372319C (en) | 2008-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101215355A Expired - Fee Related CN100372319C (en) | 2005-12-31 | 2005-12-31 | Method for detecting link physical self ring |
Country Status (1)
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101466113B (en) * | 2007-12-21 | 2011-11-16 | 大唐移动通信设备有限公司 | Method and system for monitoring time-division radio base station link |
| CN101252470B (en) * | 2008-03-28 | 2010-09-01 | 中兴通讯股份有限公司 | Method for link self-loop test on IMA interface |
| CN101488781A (en) * | 2009-02-23 | 2009-07-22 | 华为技术有限公司 | Loop link detection method in transmission cable and apparatus |
| CN112968846B (en) * | 2021-02-02 | 2022-08-16 | 武汉迈威通信股份有限公司 | Detection system for illegal short circuit of switch port |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1260928A (en) * | 1997-02-28 | 2000-07-19 | 夸尔柯姆股份有限公司 | Method and apparatus for testing communication system |
| CN1426196A (en) * | 2001-12-19 | 2003-06-25 | 深圳市中兴通讯股份有限公司上海第二研究所 | Self circulation method for program control exchanger |
| US6687232B1 (en) * | 2000-01-14 | 2004-02-03 | Adtran, Inc. | Subscriber loop terminal equipment-resident mechanism for determining bit rate of high-level data link control communication channel |
| US6937594B2 (en) * | 2001-04-27 | 2005-08-30 | Lucent Technologies Inc. | Loop back testing for multi-protocol hybrid networks |
-
2005
- 2005-12-31 CN CNB2005101215355A patent/CN100372319C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1260928A (en) * | 1997-02-28 | 2000-07-19 | 夸尔柯姆股份有限公司 | Method and apparatus for testing communication system |
| US6687232B1 (en) * | 2000-01-14 | 2004-02-03 | Adtran, Inc. | Subscriber loop terminal equipment-resident mechanism for determining bit rate of high-level data link control communication channel |
| US6937594B2 (en) * | 2001-04-27 | 2005-08-30 | Lucent Technologies Inc. | Loop back testing for multi-protocol hybrid networks |
| CN1426196A (en) * | 2001-12-19 | 2003-06-25 | 深圳市中兴通讯股份有限公司上海第二研究所 | Self circulation method for program control exchanger |
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| CN1859230A (en) | 2006-11-08 |
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