CN1852543A - Method for detecting physical random access channel abnormal condition - Google Patents
Method for detecting physical random access channel abnormal condition Download PDFInfo
- Publication number
- CN1852543A CN1852543A CNA200610000615XA CN200610000615A CN1852543A CN 1852543 A CN1852543 A CN 1852543A CN A200610000615X A CNA200610000615X A CN A200610000615XA CN 200610000615 A CN200610000615 A CN 200610000615A CN 1852543 A CN1852543 A CN 1852543A
- Authority
- CN
- China
- Prior art keywords
- control software
- statistics
- abnormal condition
- random access
- channel abnormal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The disclosed method for detecting channel abnormity of physical random access channel (PRACH) includes steps: making statistics for PRACH to capture information of indicator and information of successful access message, and reporting result of statistics to control software in high level; based on threshold value setup, if difference value of result of statistics is larger than the threshold value, then the control software in high level determines channel is abnormal, and sends warning to user. The invention increases reliability of service.
Description
Technical field
Wideband Code Division Multiple Access (WCDMA) in the present invention relates to communicate by letter (WCDMA:Wide Code DivisionMultiple Address) field relates in particular to the unusual detection method of a kind of Physical Random Access Channel in the WCDMA system (PRACH:Physical Random Access Channel).
Background technology
In the WCDMA system, subscriber equipment (UE:User Equipment) is finished access function jointly by PRACH channel and acquisition indicator channel (AICH:Acquisition Indicator Channel).
Up PRACH channel is divided into up access slot, and each access slot length is 5120 chips.N up access slot be UE receive n descending access slot (n=0 wherein, 1 ..., 14) begin to transmit during tp-a chip before.
Descending AICH channel is divided into descending access slot, and each access slot length is 5120 chips.Descending access slot aligns in time with basic Common Control Channel (P-CCPCH).
Descending emission of catching indication is only carried out at the place that begins of descending access slot.Similarly, the emission of up PRACH prefix code (Preamble) and PRACH channel massage part only begins to locate to carry out at a up access slot.
Accompanying drawing 1 is the schematic diagram that concerns of PRACH channel/AICH channel, and concrete timing relationship can be referring to 25.211 agreements.
In actual applications, the processing module of base station (NODEB) PRACH channel need be finished two tasks simultaneously: insert energy, interchannel noise etc. according to the user and finish and insert judgement, and be to send to the AICH channel processing module behind acquisition indicator (AI:Acquisition Indicator) the information framing with court verdict; Demodulation allows to insert user's message (Message) information, and sends back level decoding module to, after decoding, finally delivers to radio network controller (RNC:RadioNetwork Controller).
Because the output of above-mentioned acquisition indicator information and demodulating data is generally delivered to corresponding processing module by two different channels, therefore needing a kind of mechanism can be qualitative, the state of these two Channel Transmission of cycle detection.
Summary of the invention
The objective of the invention is to monitor the transmission state of interface, and show channel abnormal condition, realize detection and alarm function the PRACH channel by alarm by the detection method of introducing a kind of PRACH channel abnormal condition.
For reaching above purpose, the present invention proposes a kind of detection method of physical random access channel abnormal condition: the information that acquisition indicator information that the Statistical Physics Random Access Channel successfully inserts and success insert, if there is difference to represent to detect channel abnormal condition between the statistics.
Wherein, by underlying algorithm Control Software statistics acquisition indicator information, and report high-rise Control Software; Add up the information that successfully inserts by back level decoding module, and report high-rise Control Software; High-rise Control Software is judged the difference of the statistics that reports, and represents to detect channel abnormal condition if surpass the setting thresholding, and high-rise Control Software is by the alarm notification user.
As shown in Figure 2, preferably, this method can may further comprise the steps:
S01. the underlying algorithm Control Software according to the court verdict of acquisition indicator, is added up the acquisition indicator number of times that success inserts in each base station frame number BFN cycle;
S02. the underlying algorithm Control Software equals 0 constantly at next base station frame number BFN, reports the statistics of step S01 to its high-rise Control Software;
S03. level decoding module in back is added up the number of users that success inserts in each base station frame number BFN cycle according to message (MSG) information;
S04. level decoding module in back equals 0 moment reported statistics from step S03 to its high-rise Control Software at next base station frame number BFN;
S05. high-rise Control Software is according to the statistics that reports in S02, the S04 step, if the difference of statistics surpasses and thinks channel abnormal condition when setting thresholding.
S06. high-rise Control Software is alarmed to the user under the situation of channel abnormal condition.
Wherein, underlying algorithm Control Software and high-rise Control Software are same software;
Wherein, the statistical criteria of adding up among the step S03 is:
There are a plurality of data blocks in spreading factor SF for different on the interface, only judge according to the first blocks of data piece;
Transmission Time Interval TTI has two kinds of value 10ms and 20ms, if TTI is 20ms, does not then do statistics in the 10ms of back.
Wherein, the numerical value of thresholding is greater than the maximum deviation of the statistical value that causes owing to the statistics time difference of two modules.
The invention has the beneficial effects as follows: the information that acquisition indicator information that the Statistical Physics Random Access Channel successfully inserts and success insert, whether the difference by statistics detects channel unusual, show channel abnormal condition by alarm, improve professional reliability.
Description of drawings
Fig. 1 is the schematic diagram that concerns of PRACH channel/AICH channel;
Fig. 2 is the detection flow chart of steps of PRACH channel abnormal condition among the embodiment;
Fig. 3 is that NODEB PRACH channel is because the error schematic diagram of the asynchronous introducing of timing statistics.
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention is specifically described.
Specifically be embodiment PRACH channel abnormal condition the detection steps flow chart as shown in Figure 2, the specific implementation step that the MSG information of the acquisition indicator information of NODEB PRACH channel processing module and back level decoding module of detecting is transmitted by the correct level backward of corresponding channel is as follows:
S01. the underlying algorithm Control Software according to the court verdict of acquisition indicator, is added up the acquisition indicator number of times that success inserts in each base station frame number BFN cycle;
S02. the underlying algorithm Control Software equals 0 constantly at next base station frame number BFN, reports the statistics (just allowing the AI number of access) of step S01 to its high-rise Control Software;
S03. level decoding module in back is added up the number of users that success inserts in each base station frame number BFN cycle according to MSG information;
S04. level decoding module in back equals 0 moment reported statistics from step S03 to its high-rise Control Software at next base station frame number BFN;
S05. high-rise Control Software is according to the statistics that reports in S02, the S04 step, if the difference of statistics surpasses and thinks channel abnormal condition when setting thresholding.
S06. high-rise Control Software is alarmed to the user under the situation of channel abnormal condition.
Wherein, underlying algorithm Control Software and high-rise Control Software are same software; The statistical criteria of adding up among the step S03 is:
For different spreading factor SF (SF=32 being arranged, 64,128 and 256 branch), there are a plurality of data blocks on the interface, only judge according to the first blocks of data piece;
Transmission Time Interval TTI has two kinds of value 10ms and 20ms, if TTI is 20ms, does not then do statistics in the 10ms of back.
Because the underlying algorithm Control Software of PRACH channel is finished statistics according to prefix code Preamble, decoding module is then according to the Message Information Statistics, and both are not fully synchronously in time, and two parts error is arranged under limiting case, as shown in Figure 3:
1) set time between Preamble and the Message is poor: during AI_TIMING=0, may differ from 3 access slots, during AI_TIMING=1, may differ from 4 access slots.
2) there is time delay in the inter-process of NODEB underlying algorithm Control Software.
Therefore, high-rise Control Software needs to increase a thresholding when detecting according to statistics execution cycle that reports of two modules, whether unusual to recently judging channel according to the difference of statistics and threshold value.If the statistics difference greater than threshold value, is then represented channel abnormal condition.But, the error of the asynchronous introducing of consideration timing statistics, this threshold value of setting numerically is greater than the maximum deviation of the statistical value that causes owing to the statistics time difference of two modules, thereby gets rid of the influence that this error is judged channel abnormal condition.In the present embodiment, the threshold value that sets need be greater than the summation of set time difference and inter-process time delay, and promptly threshold value is greater than the maximum deviation of the statistical value that causes owing to these two the statistics time differences.
Like this, just realized the detection of NODEB PRACH channel abnormal condition by the inventive method.
Claims (8)
1. the detection method of a physical random access channel abnormal condition is characterized in that: the information that acquisition indicator information that the Statistical Physics Random Access Channel successfully inserts and success insert, if there is difference to represent to detect channel abnormal condition between the statistics.
2. the detection method of physical random access channel abnormal condition as claimed in claim 1 is characterized in that: add up described acquisition indicator information by the underlying algorithm Control Software, and report high-rise Control Software.
3. the detection method of physical random access channel abnormal condition as claimed in claim 1 is characterized in that: by the information of the described success access of back level decoding module statistics, and report high-rise Control Software.
4. as the detection method of claim 2,3 described physical random access channel abnormal conditions, it is characterized in that: described high-rise Control Software is judged the difference of the statistics that reports, represent to detect channel abnormal condition if surpass the setting thresholding, high-rise Control Software is by the alarm notification user.
5. the detection method of physical random access channel abnormal condition as claimed in claim 1 is characterized in that said method comprising the steps of:
S01. the underlying algorithm Control Software according to the court verdict of acquisition indicator, is added up the acquisition indicator number of times that success inserts in each base station frame number BFN cycle;
S02. the underlying algorithm Control Software equals 0 constantly at next base station frame number BFN, reports the statistics of step S01 to its high-rise Control Software;
S03. level decoding module in back is added up the number of users that success inserts in each base station frame number BFN cycle according to information;
S04. level decoding module in back equals 0 moment reported statistics from step S03 to its high-rise Control Software at next base station frame number BFN;
S05. high-rise Control Software is according to the statistics counting statistics result's who reports in S02, the S04 step difference, if the difference of statistics surpasses and thinks channel abnormal condition when setting thresholding;
S06. high-rise Control Software is alarmed to the user under the situation of channel abnormal condition.
6. the detection method of physical random access channel abnormal condition as claimed in claim 5, it is characterized in that: described underlying algorithm Control Software and high-rise Control Software are same software.
7. the detection method of physical random access channel abnormal condition as claimed in claim 5 is characterized in that the statistical criteria of adding up among the described step S03 is:
There are a plurality of data blocks in spreading factor SF for different on the interface, only judge according to first data block;
Transmission Time Interval TTI has two kinds of value 10ms and 20ms, if TTI is 20ms, does not then do statistics in the 10ms of back.
8. the detection method of physical random access channel abnormal condition as claimed in claim 2 is characterized in that: the numerical value of thresholding is greater than because the maximum deviation of the statistical value that causes of the statistics time difference of two modules among the described step S05.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610000615XA CN100407841C (en) | 2006-01-09 | 2006-01-09 | Method for detecting physical random access channel abnormal condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610000615XA CN100407841C (en) | 2006-01-09 | 2006-01-09 | Method for detecting physical random access channel abnormal condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1852543A true CN1852543A (en) | 2006-10-25 |
| CN100407841C CN100407841C (en) | 2008-07-30 |
Family
ID=37134006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610000615XA Expired - Fee Related CN100407841C (en) | 2006-01-09 | 2006-01-09 | Method for detecting physical random access channel abnormal condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100407841C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032420A1 (en) * | 2009-09-16 | 2011-03-24 | 中兴通讯股份有限公司 | Method and apparatus for detecting performance of random access channel |
| CN102264149A (en) * | 2010-05-26 | 2011-11-30 | 中兴通讯股份有限公司 | WCDMA system terminal random access method and apparatus thereof |
| CN107911182A (en) * | 2017-11-21 | 2018-04-13 | 合肥工业大学 | A kind of wireless channel environment characteristic parameter mutation detection methods |
| CN111031583A (en) * | 2019-12-19 | 2020-04-17 | 杭州迪普科技股份有限公司 | Channel switching method and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9509921D0 (en) * | 1995-05-17 | 1995-07-12 | Roke Manor Research | Improvements in or relating to mobile radio systems |
| EP1190496B1 (en) * | 2000-02-17 | 2004-10-27 | Samsung Electronics Co., Ltd. | Apparatus and method for assigning a common packet channel in a cdma communication system |
| EP1198076A1 (en) * | 2000-10-10 | 2002-04-17 | Siemens Aktiengesellschaft | Method and apparatus for the initiation of communication |
| US6917602B2 (en) * | 2002-05-29 | 2005-07-12 | Nokia Corporation | System and method for random access channel capture with automatic retransmission request |
| JP4244670B2 (en) * | 2003-03-19 | 2009-03-25 | 日本電気株式会社 | Mobile communication system, radio base station apparatus and operation control method thereof |
-
2006
- 2006-01-09 CN CN200610000615XA patent/CN100407841C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032420A1 (en) * | 2009-09-16 | 2011-03-24 | 中兴通讯股份有限公司 | Method and apparatus for detecting performance of random access channel |
| CN102264149A (en) * | 2010-05-26 | 2011-11-30 | 中兴通讯股份有限公司 | WCDMA system terminal random access method and apparatus thereof |
| CN102264149B (en) * | 2010-05-26 | 2014-08-13 | 中兴通讯股份有限公司 | WCDMA system terminal random access method and apparatus thereof |
| CN107911182A (en) * | 2017-11-21 | 2018-04-13 | 合肥工业大学 | A kind of wireless channel environment characteristic parameter mutation detection methods |
| CN107911182B (en) * | 2017-11-21 | 2020-07-14 | 合肥工业大学 | Method for detecting sudden change of environmental characteristic parameters of wireless channel |
| CN111031583A (en) * | 2019-12-19 | 2020-04-17 | 杭州迪普科技股份有限公司 | Channel switching method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100407841C (en) | 2008-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2574321Y (en) | Base station and user apparatus | |
| CN1258944C (en) | Method for allocating secondary synchronization codes to a base station of a mobile telecommunication system | |
| CN1852543A (en) | Method for detecting physical random access channel abnormal condition | |
| CN101185250B (en) | Initial multi-path acquisition of random access channels | |
| CN1853383A (en) | Information flow admission control for wireless systems | |
| CN1645764A (en) | Antenna-switching diversity receiver | |
| CN1867166A (en) | Method for deleting wireless link under out-of-step state | |
| CN1549475A (en) | Fast random switching in method used for upward special channel enhancement of WCDMA system | |
| CN101064944A (en) | Sharing channel based switch method for mobile communication system | |
| CN1157965C (en) | Method for transmitting emergency stopping control information on public subdivided information channel | |
| CN1640006A (en) | Transmit power control during condition of out-of-lock for fingers in a rake receiver | |
| CN100341338C (en) | User-oriented fault detection method for wireless network controller | |
| CN1266955C (en) | Method for wireless link deterioration detection and deterioration processing of TD-SCDMA system | |
| CN1223215C (en) | Load control method for Iu interface supporting Iu Flex technique | |
| CN1254125C (en) | Cell search apparatus and method in asynchronous mobile communication system | |
| CN1859036A (en) | Regulating method and its device for physically random cut-in channel judging threshold | |
| CN1885743A (en) | Method for optimizing power deviation between PRACH lead and message | |
| WO2006007714A1 (en) | Cdma probe for self-testing base station receivers | |
| CN1303765C (en) | Path diversity receiver apparatus and method of spectrum spread communication system | |
| CN1252940C (en) | Assignment and reassignment of second finger in CDMA rake receiver | |
| CN100346581C (en) | Reception device and reception method | |
| CN1816197A (en) | Method for insuring super wireless-user immediatly accessing internet | |
| CN1688177A (en) | Call loss reducing method for time-division synchronous CDMA access system | |
| US20040017845A1 (en) | Synchronization strategy and architecture for spread-spectrum receivers | |
| CN1152500C (en) | Mobile station acces scontrol method for CDMA system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080730 Termination date: 20220109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |