CN102572900B - Base station fault detection method - Google Patents
Base station fault detection method Download PDFInfo
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- CN102572900B CN102572900B CN201010583992.7A CN201010583992A CN102572900B CN 102572900 B CN102572900 B CN 102572900B CN 201010583992 A CN201010583992 A CN 201010583992A CN 102572900 B CN102572900 B CN 102572900B
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Abstract
The invention provides a base station fault detection method. In the method, by periodically executing online detection on an uplink pilot time slot (UpPTS) signal loop, namely, detecting whether the processes that the uplink synchronous signals on the UpPTS routes from a RRU to an uplink synchronous detection module for detection via data routing and the uplink synchronous detection module submits the detection result to a layer 1 baseband processing module, are regular, the currently happed random access fault can be known in time under a condition of having no influence on the regular services and having very small influence on the system load.
Description
Technical field
The present invention relates to the fault detection technique in mobile communication system, the base station fault detection method while particularly relating to random access.
Background technology
In existing mobile communication system, part relevant to random access in base station (NodeB) mainly comprises: antenna, radio frequency remoto module (RRU) and baseband processing unit (BBU).Wherein, the correlation module in BBU is data routing module, uplink synchronous detection module, layer 1 (L1) baseband processing module and operational administrative module.In the time that subscriber equipment (UE) accesses at random, 1 in the random uplink synchronous code (SYNCUL code) 0～7 of selecting its community, place sends at uplink synchronous time slot (UpPTS), the corresponding passage of every antenna of community, the signal of receiving is passed to connected RRU by feeder line to be processed, RRU passes to baseband signal after treatment each passage the data routing module of BBU by optical fiber, then passes to corresponding uplink synchronous detection module by data routing module.Uplink synchronous detection module carries out the detection of uplink synchronous code and testing result is fed back to L1 baseband processing module carrying out the scheduling of forward direction paging access channel (FPACH) take passage group as unit.Passage group is the set of passage, and 8 passages of smart antenna are 1 passage group, and each passage of spaced antenna is 1 passage group.The testing result of feedback comprises respectively the detection case of SYNC UL code 0～7: this SYNC ULcode whether detected, whether has conflict, and whether reliable, signature power, peak and place passage group.Operational administrative module is carried out control and management to the modules of base station, it with RRU between communicate by letter and carried by maintenance channel, also by Optical Fiber Transmission, data routing module carries out route.
In existing TD-SCDMA network, due to interface (the Interface between the RRU and the BBU of antenna, RRU, RRU and BBU, Ir) fault such as the uplink synchronous of path and BBU (SYNC-UL) input, can cause UE to access at random time, NodeB cannot detect SYNC UL signal, the fault that causes UE to access.Now, whether be no user access or access fault because NodeB cannot distinguish, can not be in time to fault warning.That is to say, existing system cannot be known the access fault that network side occurs in time.
At present, can only be after user complain owing to making a phone call, by system maintenance, personnel investigate orientation problem by scene.Owing to now needing to suspend regular traffic, and need to allow base station enter debugging mode, therefore will affect the normal operation of system and normally carrying out of customer service.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of detection method of base station fault, and the method can make system know in time the random access fault of current generation.
In order to achieve the above object, the technical scheme that the present invention proposes is:
A kind of detection method of base station fault, in each default fault detect cycle, for the current each activation cell on the baseband processing unit (BBU) of base station, the operational administrative module of base station triggers the process that all activated passage group of this activation cell is detected according to default detection mode, described detection mode is for detect q passage group at every turn simultaneously, in the time that the activate channel group number not detecting in community is less than q, the passage group that this activate channel group not detecting is detected as single simultaneously, described q is more than or equal to 1 and be less than or equal to the activate channel group sum of described activation cell,
Wherein, each process detecting comprises:
A, described operational administrative module are according to N
check=N
now+ X, determines the detection subframe numbers N of this detection
check; Wherein, N
nowfor current subframe numbers, X is the detection framing control parameter of presetting, X > 0;
B, described operational administrative module are by the synchronizing sequence for this detection, frequency, passage and described N
checknotice is to remote radio unit (RRU) (RRU);
C, described RRU receive after described notice, determine current whether can detection, if can, feeding back ACK message is given described operational administrative module, and at N
checksubframe, on described frequency and described passage, substitutes the receiving sequence on real uplink synchronous time slot and sends to the uplink synchronous detection module on BBU with described synchronizing sequence; Otherwise feedback NACK message is given described operational administrative module;
If the described operational administrative module of d is at N
checkbefore-Y subframe, receive the ACK message of all described RRU feedbacks, by described N
checkissue L1 baseband processing module, and by described N
check, described frequency notifies to described uplink synchronous detection module; Otherwise, the ACK message that received of record at N
check+ 1 subframe finishes this to detect the detection of corresponding activation cell; Wherein, Y is zero the integer of being more than or equal to of presetting;
E, described uplink synchronous detection module are at N
checksubframe gathers the data of the uplink synchronous time slot of all passages of described frequency, and detects, and this testing result is notified to layer 1 baseband processing module; Described testing result is fed back to described operational administrative module by described layer 1 baseband processing module, and described testing result is not dispatched for FPACH;
F, when described operational administrative module is at N
checkwhile receiving described testing result before+Z subframe, determine that whether cell status corresponding to described detection changes, if so, finishes the detection to current activation cell; Otherwise judge whether described testing result meets preset requirement, if so, finish this and detect, otherwise, read the data of described collection from described uplink synchronous detection module, described data are recorded in daily record and alarm; Wherein, Z is zero the integer of being more than or equal to of presetting;
When described operational administrative module is at N
checkwhile not receiving described testing result before+Z subframe, recording exceptional event in described daily record, finishes this detection.
In sum, the detection method of the base station fault that the present invention proposes, by the periodically online detection to UpPTS time slot signal loop, detect uplink synchronizing signals on UpPTS time slot be routed to uplink synchronous detection module through data from RRU detect, whether testing result is submitted to these processes of layer 1 baseband processing module by uplink synchronous detection module normal, thereby can not affect regular traffic, very little on system load impact in the situation that, know in time the random access fault of current generation.
Accompanying drawing explanation
Fig. 1 is the single testing process schematic diagram of the embodiment of the present invention one.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Core concept of the present invention is: triggered the each activate channel group in the upper all current activation cells of BBU is periodically detected by the operational administrative module in base station, when each detection, the uplink synchronizing signals on UpPTS time slot is routed to and uplink synchronous detection module, is detected and testing result is submitted to layer 1 baseband processing module by uplink synchronous detection module through data from RRU, whether these processes normally detect.So, can know in time the random access fault of current generation.
Fig. 1 is the single testing process schematic diagram of the embodiment of the present invention one.As shown in Figure 1, this embodiment comprises:
In each default fault detect cycle, for the current each activation cell on the baseband processing unit (BBU) of base station, the operational administrative module of base station triggers the process that all activated passage group of this activation cell is detected according to default detection mode;
In the present embodiment, know in time the random access fault of current generation in order to make system, adopt periodic detection mode, successively the activate channel group of the current each activation cell on BBU is detected in each sense cycle, the detection mode adopting when each activation cell is detected is: detect q passage group at every turn simultaneously, in the time that the activate channel group number not detecting in community is less than q, the passage group that this activate channel group not detecting is detected as single simultaneously, described q is more than or equal to 1 and be less than or equal to the activate channel group sum of described activation cell.
Here, those skilled in the art can be according to actual needs, for q arranges suitable value.Preferably, q on be limited to 8.Because the sync ul code of regulation Yi Ge community only has 8 in existing protocol standard.For the passage group detecting simultaneously, need each passage group to use a sync ul code.Q is set to 8, can reduce the detection number of times that has multiple passage Zu community.
In actual applications, each detailed process detecting comprises the following steps:
In actual applications, the value of X should be greater than notice RRU, uplink synchronous detection module and layer 1 baseband processing module carrying out the ready needed time of uplink synchronous detection and these modules.Those skilled in the art can be according to actual needs, and suitable X value is set, and preferably, this value is 2000.
Here, operational administrative module will be notified to RRU for the information of this detection, so that on the detection subframe that after this RRU notifies in operational administrative module, frequency, passage, substitute the sequence of real uplink synchronous time slot reception with notified synchronizing sequence, for uplink synchronous detection module to current for detection of synchronizing sequence detect, thereby can determine current whether fault to occur to access at random according to detecting.
In this step, for detection of passage be these all passages that all passage groups of detecting comprise while detecting.The testing result for the treatment of sense channel group for fear of the input of non-passage group to be detected exerts an influence, and need to also will send out message to the passage of non-passage group to be detected and carry out special setting.Therefore need all RRU of Dui Gai community to send corresponding message.1 passage group also may have multiple passages, passage group need to be decomposed to passage.Need to send 1 in the SYNCUL Code0～Code7 of this community for the passage of passage group to be detected, the passage of same passage group sends identical SYNCUL Code, and the passage of different passage groups sends different SYNCUL Code.For the passage of non-passage group to be detected, the syncUL code of use is numbered 8, is used to indicate at UpPTS time slot and does not send any SYNCUL Code.
Here, operational administrative module can be notified the above-mentioned information for this detection to RRU by private message.
Particularly, while carrying out described notice, operational administrative module will detect the scrambler group number of subframe numbers and current area, dominant frequency period, port number to be detected, channel list to be detected ([numbering of passage 1, synchronizing sequence (syncUL code) numbering that passage 1 uses, the numbering of passage 2, the syncUL code numbering .. that passage 2 uses, the numbering of passage 8, syncUL code that passage 8 uses numbering]) issue corresponding RRU with private message, and await a response.
Here, in actual applications, RRU prestores, and (each SYNC UL sequence has 128 chip to all 128 SYNCUL sequences, for saving memory space, each chip can represent with 2bit, corresponding with 4 constellation point of QPSK) be divided into 32 groups by scrambler group number, 8 every group.
The concrete grammar of this step is:
RRU receives after the notice from operational administrative module, checks that the detection of RRU enables (determining current whether can detection), if be not now 0 (can not detect), returns NACK.If 0, resolve message, find SYNC UL code character corresponding to this community according to the scrambler group number in message, according to each channel number of specifying and corresponding syncUL code numbering, be the reserved memory space of dedicated tunnel writing after the QPSK constellation point sequence of specifying the sync ul sequence mapping that prestores of syncUL code numbering to become to represent with IQ sample in logic ram again.(filling out complete zero when syncUL code is numbered 8, IQ sample) then enables the slotting number of dedicated tunnel, carrier wave to open, and the detection of set RRU enables, and returns ACK message.
At N
checksubframe, if it is 1 that the detection of RRU enables, enable according to the slotting number of passage, carrier wave, by the IQ sample zero clearing of 48 chip before UpPTS time slot of respective channel, carrier wave, then this passage sync UL IQ sample sequence of preparing in aforementioned logic ram is read, start the reception IQ sample sequence of the IQ sample sequential covering UpPTS time slot of this SYNC UL from the 1st chip of UpPTS time slot, then by the IQ sample zero clearing of 32 chip after UpPTS time slot.Finally the detection of RRU is enabled and inserts number to enable zero clearing.
If the described operational administrative module of step 104 is at N
checkbefore-Y subframe, receive the ACK message of all described RRU feedbacks, by described N
checkissue L1 baseband processing module, and by described N
checknotify to described uplink synchronous detection module with described frequency; Otherwise, the ACK message that received of record at N
check+ 1 subframe finishes this to detect the detection of corresponding activation cell.
Wherein, Y is zero the integer of being more than or equal to of presetting, particularly, notice uplink synchronous detection module and layer 1 baseband processing module be should be greater than and uplink synchronous detection and ready time of these modules carried out, and for X-Y, should be greater than under normal circumstances from operational administrative module send comprise for detection of the message of information to RRU, receive the time of the feedback message of RRU to operational administrative module, those skilled in the art can be according to actual needs, suitable value is set, preferably, this value is 40.
Here, if operational administrative module at N
checkbefore-Y subframe, receive the ACK message of all described RRU feedbacks, illustrate that described RRU normally moves, there is not fault, next can detect RRU, uplink synchronous detection module and the triangular access link of L1 baseband processing module by subsequent step; If do not receive the ACK message of all RRU feedback, some RRU that current institute detected cells is described have gone wrong normal service can not be provided, and therefore, after this do not need again any detection to be carried out in current detected community, and only need to be recorded in N
checkthe ACK message of feedback before-Y subframe, i.e. the situation of recording cell mark, each RRU feeding back ACK, and exit the detection of current activation cell, at N
check+ 1 subframe starts to carry out the detection of next activation cell.
Particularly, receive the detection frame number N of operational administrative block configuration when uplink synchronous detection module
check, at N
checkit is 0 that subframe is set up row synchronization slot skew UpPTSshifting, at N
check+ 1 subframe is recovered former UpPTSshifting.At N
checksubframe gathers the input data of the UpPTS time slot of all passages of designated carrier, and this testing result is notified to layer 1 baseband processing module.Because this detects for fault detect, therefore, for N
checksubframe, only feeds back to described operational administrative module after layer 1 baseband processing module received testing result, and no longer this testing result is dispatched for FPACH.
Here it should be noted that, in actual applications, layer 1 baseband processing module processed N
check-1 subframe enters fault detect pattern, is processing N
checkafter+1 subframe, exit fault detect pattern.Under fault detect pattern, the impact that reset by uplink synchronous slot offset, layer 1 baseband processing module do not do FPACH scheduling.Layer 1 baseband processing module processed N
checkwhen subframe, send testing result message to operational administrative module, carry testing result and the local antenna condition of syncUL code0～syncUL code7.Testing result comprises the detection mark (whether detecting whether conflict, whether reliable) of syncUL code0～7, effectively passage group number, peak and signature power information.
Here, cell status has changed and has referred to that community is deleted by inaccessible (lock) or community, if changed, does not need current activation cell to be detected again, and exits this and detects, at N
check+ 1 subframe starts the detection to next activation cell; If not do not changed, judge whether current testing result meets default condition, whether meet: in the passage group of this detection, the synchronizing sequence for this detection detected, do not exist conflict and reliable, peak is correct.If testing result is eligible, the current access fault that do not exist is described, exit this and detect, enter next testing process, process other not detected passage group.If testing result is ineligible, current existence access fault is described, need to carry out record to concrete fault message, operational administrative module reads in N from uplink synchronous detection module
checkthe data that subframe gathers, are recorded in daily record and alarm by described data.
When described operational administrative module is at N
checkwhile not receiving described testing result before+Z subframe, recording exceptional event in described daily record, finishes this detection.
Here, if operational administrative module at N
checkbefore+Z subframe, do not receive described testing result, current existence access fault is described, set it as anomalous event record, so that after this Operation and Maintenance personnel process accordingly according to daily record.The content of physical record comprises the image data that reads from uplink synchronous detection module and current feedback result and cell ID, the information such as carrier identification.
Described Z is zero the integer of being more than or equal to of presetting.Particularly, the value of Z should be greater than layer 1 baseband processing module and receives testing result the delay processed and layer 1 baseband processing module and send out testing result message corresponding to the transmission delay sum of operational administrative module.
Those skilled in the art can be according to actual needs, and suitable value is set, and preferably, this value is 40.
Can find out by technique scheme, the detection method of the base station fault that the present invention proposes, can detect online UpPTS time slot signal loop to property performance period, detect uplink synchronizing signals on UpPTS time slot be routed to uplink synchronous detection module through data from RRU detect, whether testing result is submitted to these processes of layer 1 baseband processing module by uplink synchronous detection module normal, thereby can not affect regular traffic, very little on system load impact in the situation that, know in time the random access fault of current generation.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. the detection method of a base station fault, it is characterized in that, in each default fault detect cycle, for the current each activation cell on the baseband processing unit BBU of base station, the operational administrative module of base station triggers the process that all activated passage group of this activation cell is detected according to default detection mode, described detection mode is for detect q passage group at every turn simultaneously, in the time that the activate channel group number not detecting in community is less than q, the passage group that this activate channel group not detecting is detected as single simultaneously, described q is more than or equal to 1 and be less than or equal to the activate channel group sum of described activation cell,
Wherein, each process detecting comprises:
A, described operational administrative module are according to N
check=N
now+ X, determines the detection subframe numbers N of this detection
check; Wherein, N
nowfor current subframe numbers, X is the detection framing control parameter of presetting, X > 0;
B, described operational administrative module are by the synchronizing sequence for this detection, frequency, passage and described N
checknotice is to remote radio unit (RRU) RRU;
C, described RRU receive after described notice, determine current whether can detection, if can, feeding back ACK message is given described operational administrative module, and at N
checksubframe, on described frequency and described passage, substitutes the receiving sequence on real uplink synchronous time slot and sends to the uplink synchronous detection module on BBU with described synchronizing sequence; Otherwise feedback NACK message is given described operational administrative module;
If the described operational administrative module of d is at N
checkbefore-Y subframe, receive the ACK message of all described RRU feedbacks, by described N
checkissue layer 1 baseband processing module, and by described N
check, described frequency notifies to described uplink synchronous detection module; Otherwise, the ACK message that received of record at N
check+ 1 subframe finishes this to detect the detection of corresponding activation cell; Wherein, Y is zero the integer of being more than or equal to of presetting;
E, described uplink synchronous detection module are at N
checksubframe gathers the data of the uplink synchronous time slot of all passages of described frequency, and detects, and this testing result is notified to layer 1 baseband processing module; Described testing result is fed back to described operational administrative module by described layer 1 baseband processing module, and described testing result is not dispatched for FPACH;
F, when described operational administrative module is at N
checkwhile receiving described testing result before+Z subframe, determine that whether cell status corresponding to described detection changes, if so, finishes the detection to current activation cell; Otherwise judge whether described testing result meets preset requirement, if so, finish this and detect, otherwise, read the data of described collection from described uplink synchronous detection module, described data are recorded in daily record and alarm; Wherein, Z is zero the integer of being more than or equal to of presetting;
When described operational administrative module is at N
checkwhile not receiving described testing result before+Z subframe, recording exceptional event in described daily record, finishes this detection.
2. method according to claim 1, is characterized in that, the module of operational administrative described in step b by private message by the synchronizing sequence for this detection, frequency, passage and described N
checknotice is to RRU.
3. method according to claim 1, is characterized in that, described X is 2000.
4. method according to claim 1, is characterized in that, described Y is 40.
5. method according to claim 1, is characterized in that, described Z is 40.
6. method according to claim 1, is characterized in that, the preset requirement in described step f is: in the passage group of this detection, the synchronizing sequence for this detection detected, and without conflict, reliable and peak is correct.
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| CN106332157A (en) * | 2015-07-06 | 2017-01-11 | 中兴通讯股份有限公司 | Wireless communication device detection method and wireless communication device |
| CN114079959B (en) * | 2020-08-13 | 2023-08-04 | 大唐移动通信设备有限公司 | Abnormality positioning method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1852541A (en) * | 2005-11-30 | 2006-10-25 | 华为技术有限公司 | Base-station fault detecting method and fault detecting system |
| CN101179816A (en) * | 2007-12-13 | 2008-05-14 | 华为技术有限公司 | Fault detection method and apparatus of base station and base station system |
| CN101404825A (en) * | 2008-11-13 | 2009-04-08 | 中兴通讯股份有限公司 | Method and system for processing service frame of base station side in fail-soft mode |
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| KR20030046682A (en) * | 2001-12-06 | 2003-06-18 | 삼성전자주식회사 | Radio network controller/node b for detecting position of user equipment using differential global positioning system in mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1852541A (en) * | 2005-11-30 | 2006-10-25 | 华为技术有限公司 | Base-station fault detecting method and fault detecting system |
| CN101179816A (en) * | 2007-12-13 | 2008-05-14 | 华为技术有限公司 | Fault detection method and apparatus of base station and base station system |
| CN101404825A (en) * | 2008-11-13 | 2009-04-08 | 中兴通讯股份有限公司 | Method and system for processing service frame of base station side in fail-soft mode |
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