CN1867151A - Realization method and device for improving clock source stability - Google Patents
Realization method and device for improving clock source stability Download PDFInfo
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- CN1867151A CN1867151A CNA2006100016575A CN200610001657A CN1867151A CN 1867151 A CN1867151 A CN 1867151A CN A2006100016575 A CNA2006100016575 A CN A2006100016575A CN 200610001657 A CN200610001657 A CN 200610001657A CN 1867151 A CN1867151 A CN 1867151A
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Abstract
The invention relates to a method for improving the stability of clock source, and relative device. Wherein, said method comprises: first, when the base station uses several chain circuits, the base station selects one chain circuit to supply IUB clock source as the reference clock source; the system will detect the condition of said chain circuit periodically; then when said chain circuit has the failures as high error code, frequent interruption or physical break, the base station can detect and automatically switch the reference clock source to the normal chain circuit, without hand-operated, to use other chain circuit as the clock reference source, to avoid losing clock source when the maintainer dose not maintain on time, to keep the normal operation of base station.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of implementation method and device that improves clock source stability.
Background technology
In existing wireless communications network, NodeB (base station) needs the clock source of an outside and comes its clock frequency is proofreaied and correct, and can carry out operate as normal.In system, the clock source that is used to proofread and correct the NodeB clock is called reference clock source.Wherein, IUB (wireless network air interface) clock source is a kind of in the reference clock source, and IUB clock source provides the clock source by the link of appointment usually.When IUB clock source is set, normally specify a link in many transmission links, provide the clock source to come the clock frequency of base station is carried out verification by this link.
Under present technical situation, if provide the physical link in clock source high bit error, disconnected, the physical layer fault of frequent sudden strain of a muscle to occur to the base station, or owing to attendant's misoperation makes that providing the logic of clock source link to connect to the base station goes wrong, the IUB clock source that provides to the base station can't be continued to use by the base station so, base station system will be merely able to be operated under the free-running operation, the formation clock source signals is lost, lose time standard, and then can cause the base station to provide professional quality and ability to be affected, reduced the satisfaction of user to operator.
In addition, in the prior art, when base station system works in free-running operation following time, also may need the attendant often the link that the clock source is provided to be checked and be provided with and the clock of the base station of losing clock source signals is adjusted the possibility that this will inevitably increase the work of maintenance personnel amount and go wrong in maintenance process.And, if the attendant does not in time handle these problems or misoperation, will cause the decline of system communication service quality.
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 implementation method that improves clock source stability, can be under the situation of the link occurs fault that IUB clock source is provided by this method, do not need the attendant that it is safeguarded, system can automatically switch to IUB clock source is provided on the link that is in normal condition, guarantee the base station operate as normal, improved the base station and obtained the stability in clock source.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of implementation method that improves clock source stability, comprising:
A, system detect the state that the link of reference clock source is provided to the base station;
B, when the link that reference clock source is provided breaks down, then switch on the normal link of state, provide reference clock source by this link for the base station.
Described method also comprises:
Active link and one or more reserve link that reference clock source is provided provide for base station configuration.
Described steps A comprises:
The state that system is regular or the periodicity detection provides the physical connection of the active link of reference clock source to be connected with logic.
Described step B comprises:
When the link that reference clock source is provided broke down, system detected the physical connection and the logic connection status of reserve link, and switched on the available link according to testing result, provided reference clock source by this link for the base station.
Described step B comprises:
Can carry out whether existing in the handoff links from ring status in the physical connection of system's detection reserve link, when being defined as, be defined as unavailable from ring status;
And/or,
Can carry out whether existing in the handoff links from ring status in the logic state of system's detection reserve link, when being defined as, be defined as unavailable from ring status.
Described step B comprises:
When the link that reference clock source is provided breaks down and the system that do not detect when having spendable reserve link, the state of each link in the system cycle property detection system then, when detecting the link that is in normal condition, be that the base station provides reference clock source then with this link.
Described step B comprises:
The detecting in the system of system cycle exist the reserve link of reference clock source can be provided after, the link switchover that reference clock source will be provided immediately is to the reserve link that is in normal condition;
Perhaps,
When system detects a plurality of reserve link that is in normal condition, then select a reserve link, and the link switchover that reference clock source will be provided is to this reserve link according to the condition of setting.
Described step B also comprises:
When detecting when providing the reference clock source link to break down, switch to immediately on the reserve link that is in normal condition, perhaps, through after the scheduled time, when providing the link of reference clock source still to be in malfunction, then switch on the reserve link that is in normal condition.
Described step B comprises:
After system provides the link successful switch of reference clock source, execution in step A then.
The invention provides a kind of implement device that improves clock source stability, comprising:
The link detecting module: system detects the state that the reference clock source link is provided, when this link breaks down, and notice link switchover module;
Link switchover module: reference clock source is switched on the normal non-link that reference clock source is provided of operating state, provide reference clock source by it.
Described device also comprises:
Timer, timer duration be for the sense cycle of the link detecting module set, when timer expiry, and trigger link detection module then, and pick up counting again.
Described device also comprises:
Reserve link detects trigger module: be used for when definite active link breaks down, the trigger link detection module detects reserve link, and notifies the link switchover module with testing result.
As seen from the above technical solution provided by the invention, provided by the invention multilink is detected, and when providing the IUB clock chain circuit to break down, high bit error, disconnected, the physical layer fault of frequent sudden strain of a muscle appear such as physical link, can in time switch on the link working properly to the base station provides reference clock source, make the base station continue operate as normal.
In addition, providing in the process that link is switching of IUB clock source, can distinguish effectively whether the link that makes new advances exist physically, the state of links such as ring certainly in logic, judge the communication quality and the state of new link, avoid switching on the link that has been in logic loopback, physics wrapped state or high bit error, avoid switching the possibility that the untimely and human factor of IUB clock chain circuit is provided and causes misoperation, finished the automatic switching procedure that the IUB clock chain circuit is provided.
Description of drawings
Fig. 1 is the flow chart that the invention provides the embodiment of method;
Fig. 2 is the specific implementation structural representation of device provided by the invention.
Embodiment
When the link that core concept of the present invention provides IUB clock source breaks down, on the normal link of the state that automatically switches to, provide IUB clock source by it.When automaticallying switch, system can detect the state of other link, can distinguish whether the new link that switches to is from the link that encircles, and realizes the differentiation to the multilink Link State, finds the link of operate as normal.
More specifically say, the present invention be when clock source that the user is provided with the base station be after the IUB clock source, system detects and the E1 Link State in IUB clock source is provided and takes appropriate measures, and is specific as follows:
If the state of 1 link is normal, then periodically detect the state of this link.
If 2 links break down, then whether there are other available links on the base stations detected, require the non-user of this link from ring, non-physical self ring.
If 3 exist available link, the user configured IUB clock source of then automaticallying switch is gone to this available link.
Do not have available link if 4 systems are current, then system continues the link in the detection system, till finding the link that is in normal condition and switching on this link.
In a word, system detects the link that IUB clock source is provided, and when this link breaks down, can automatically switch to the link that is in normal condition, provides IUB clock source by it.
For the present invention there being further understanding, below in conjunction with figure, explain implementation method of the present invention, its handling process is as shown in Figure 1.Its concrete steps are as follows:
Step 11: the user sets the link that the clock source of IUB is provided to the base station.
Step 12: system regularly or periodically detects the state of this link.
System carries out regularly or periodic the detection link, and the system that makes can in time find the fault of link appearance and it is taked measures areput;
Cycle for periodically detection can be set according to needs, if the attendant thinks the link job insecurity of recent system, can the setting-up time cycle smaller, so that in time obtain link-state information, this system detects judges just whether the physical connection of link in the system and logic connection status meet the Link State that the clock source is provided.
System detects this provides the physical connection of clock source link whether to have faults such as chain rupture or high bit error.If link is chain rupture physically, system can report and alarm, obtains the malfunction of link easily.If there is high bit error in link, then can learn by system prompt or by Meter Test.
In addition, also need to provide the logic of clock source link to connect and detect this, such as, because attendant's misoperation causes the undesired etc. of logic connection.
Step 13: whether the state of judging this link is in normal condition, for example, provides the physical link in clock source high bit error, the frequent abnormal condition such as disconnected, physical layer fault of dodging may occur to the base station, if then execution in step 12, continue to detect this link, otherwise then execution in step 14.
Step 14: the state of other link that exists in system's detection system, search the link that is in normal condition, promptly link is in non-user from link normal conditions such as ring, non-physical self rings.System is as described below in detection to link:
1, realization is to the link physical joint detection of system configuration link
Whether the physical connection of detection system configuration link satisfies as the primary condition that the physical connection of clock source link is provided, and does not promptly have abnormal conditions such as chain rupture, frequent sudden strain of a muscle are broken, physical layer fault.If primary condition meets, then this link is considered as link to be transferred, promptly this link may provide IUB clock source for the base station, otherwise, continue the link that disposes in the detection system;
The physical link detection is identical with step 12 implementation in this step, but needs many circuits that exist in the system are detected in step 14, selects link to be transferred.
2, realization is to the state-detection of link to be transferred in the system
After in the 1st testing process, having determined link to be transferred, also need it is carried out further state-detection, whether meet the state that clock source link is provided, can reach final conduct provides the clock source to the base station link further to determine it;
Link State detects and mainly comprises: whether link goes out non-ring certainly physically, and Link States such as the ring certainly on the NOT logic judge whether the state of link to be transferred really meets the Link State that timing reference input is provided for the base station.If the user is provided with the logic loopback of transmission on NodeB, then system also can get access to the logic of this link from ring status.
Whether be in physical self ring, logic under the situation of ring having solved new link, realize differentiation, select and meet the link that clock source link condition is provided new Link State.
By above-mentioned method, the multilink that exists in the system is detected, normal, the operable link of searching work as far as possible guarantees to finish the automation handoff procedure of IUB clock source link.Adopt above-mentioned method, can avoid when the link that system is existed detects,, the operable link of certain bar do not have operable link in the judgement system owing to not detected, operable link occurs also existing in the system, but can not carry out the situation that switch in the clock source.
Step 15: whether system finds the normal link of state, if then execution in step 16, otherwise, execution in step 12;
Do not have available link if system is current, then the base station is operated in the free oscillation operating state; Simultaneously, whether there is the link that is in normal condition in the detection system,, then carries out the switching of IUB clock source link, make link that normal IUB clock source can be provided in case find the link that is in normal condition;
Step 16: with switching on the normal link of the state of being in of IUB clock source link, and execution in step 12, detect the Link State that this newly provides IUB clock source.
If during the normal link of the current existence of system, then concrete handoff procedure is as described below:
1, system only finds an available link, then carries out the switching of IUB clock source link;
2, system searching is to many available reserve links, then selects wherein one to switch according to the condition of setting; The attendant can set the switching condition of IUB clock source link according to the situation of reality, and the condition of this setting can be link-state information or link switchover temporal information, or the like;
3, system detects the reserve link that is in normal condition, and at this moment, whether the state that the current IUB of providing clock source link is provided in system becomes normal condition, then select to switch according to the condition of setting;
Such as, set a timer, if active link recovers normal condition in the time that timer limits, then do not switch, otherwise, switch;
Perhaps, consider this link recent work state labile, if continue to use this link also may break down, the condition that can set switching is the communication quality of link, such as this condition is the error rate of link, if the error rate of other the non-IUB of providing clock source link is lower than the error rate that IUB clock source link is provided, then switches to other the non-IUB of providing clock source link, otherwise, do not switch.
In order to realize method of the present invention well, also comprised among the present invention and the corresponding device of entity, this device can be arranged in base station or the base station controller, considers the convenience of maintenance, and suggestion is arranged on this device in the base station controller.
This device comprises link detecting module, link switchover module as shown in Figure 2, and wherein the link detecting module also is connected with timer, and comprises also in the link detecting module that reserve link detects trigger module.Wherein, the link detecting module is used to detect the state of active link, promptly detects the state that clock source link is provided, and specifically by timer control active link is carried out periodicity and detects.When the existing fault of this link, then detect trigger module and touch the link detecting module state of reserve link is detected by reserve link, when finding the reserve link that is in normal operating conditions, switch by link detecting module notice link switchover module.
Introduce each module below in detail, specific as follows:
The link detecting module: system detects the state that the reference clock source link is provided, when this link breaks down, and notice link switchover module;
Timer: length of timer is the sense cycle of the link detecting module of setting, and then the trigger link detection module carries out the periodicity detection when timer expiry, and picks up counting again;
Reserve link detects trigger module: be used for when definite active link breaks down, the trigger link detection module detects reserve link, and notifies the link switchover module with testing result;
Link switchover module: reference clock source is switched on the normal non-link that reference clock source is provided of operating state, provide reference clock source by it.
In sum, method provided by the invention can automatically switch on the normal link of operating state when providing clock source link to break down, and continues to provide normal clock source, improved the reliability of system works, the system that guaranteed can continue to provide the ability of reliable business.
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 (12)
1, a kind of implementation method that improves clock source stability is characterized in that, comprising:
A, system detect the state that the link of reference clock source is provided to the base station;
B, when the link that reference clock source is provided breaks down, then switch on the normal link of state, provide reference clock source by this link for the base station.
2, the implementation method of raising clock source stability according to claim 1 is characterized in that, described method also comprises:
Active link and one or more reserve link that reference clock source is provided provide for base station configuration.
3, the implementation method of raising clock source stability according to claim 1 is characterized in that, described steps A comprises:
The state that system is regular or the periodicity detection provides the physical connection of the active link of reference clock source to be connected with logic.
According to the implementation method of claim 1,2 or 3 described raising clock source stabilities, it is characterized in that 4, described step B comprises:
When the link that reference clock source is provided broke down, system detected the physical connection and the logic connection status of reserve link, and switched on the available link according to testing result, provided reference clock source by this link for the base station.
5, the implementation method of raising clock source stability according to claim 4 is characterized in that, described step B comprises:
Can carry out whether existing in the handoff links from ring status in the physical connection of system's detection reserve link, when being defined as, be defined as unavailable from ring status;
And/or,
Can carry out whether existing in the handoff links from ring status in the logic state of system's detection reserve link, when being defined as, be defined as unavailable from ring status.
6, the implementation method of raising clock source stability according to claim 4 is characterized in that, described step B comprises:
When the link that reference clock source is provided breaks down and the system that do not detect when having spendable reserve link, the state of each link in the system cycle property detection system then, when detecting the link that is in normal condition, be that the base station provides reference clock source then with this link.
7, the implementation method of raising clock source stability according to claim 6 is characterized in that, described step B comprises:
The detecting in the system of system cycle exist the reserve link of reference clock source can be provided after, the link switchover that reference clock source will be provided immediately is to the reserve link that is in normal condition;
Perhaps,
When system detects a plurality of reserve link that is in normal condition, then select a reserve link, and the link switchover that reference clock source will be provided is to this reserve link according to the condition of setting.
8, the implementation method of raising clock source stability according to claim 4 is characterized in that, described step B also comprises:
When detecting when providing the reference clock source link to break down, switch to immediately on the reserve link that is in normal condition, perhaps, through after the scheduled time, when providing the link of reference clock source still to be in malfunction, then switch on the reserve link that is in normal condition.
According to the implementation method of claim 1,2 or 3 described raising clock source stabilities, it is characterized in that 9, described step B comprises:
After system provides the link successful switch of reference clock source, execution in step A then.
10, a kind of implement device that improves clock source stability.It is characterized in that, comprising:
The link detecting module: system detects the state that the reference clock source link is provided, when this link breaks down, and notice link switchover module;
Link switchover module: reference clock source is switched on the normal non-link that reference clock source is provided of operating state, provide reference clock source by it.
11, the implement device of raising clock source stability according to claim 10 is characterized in that, described device also comprises:
Timer, timer duration be for the sense cycle of the link detecting module set, when timer expiry, and trigger link detection module then, and pick up counting again.
According to the implement device of claim 10 or 11 described raising clock source stabilities, it is characterized in that 12, described device also comprises:
Reserve link detects trigger module: be used for when definite active link breaks down, the trigger link detection module detects reserve link, and notifies the link switchover module with testing result.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100016575A CN100442903C (en) | 2006-01-20 | 2006-01-20 | Realization method and device for improving clock source stability |
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| CNB2006100016575A CN100442903C (en) | 2006-01-20 | 2006-01-20 | Realization method and device for improving clock source stability |
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| CN1867151A true CN1867151A (en) | 2006-11-22 |
| CN100442903C CN100442903C (en) | 2008-12-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008110083A1 (en) * | 2007-03-12 | 2008-09-18 | Huawei Technologies Co., Ltd. | Transmission method, device and system for iub interface service transmitting based ip |
| CN101909316A (en) * | 2010-08-17 | 2010-12-08 | 中兴通讯股份有限公司 | Operation maintenance method and system |
| CN102035638A (en) * | 2009-09-25 | 2011-04-27 | 华为技术有限公司 | Clock source selection processing method, device and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI95979C (en) * | 1994-03-01 | 1996-04-10 | Nokia Telecommunications Oy | Hierarchical synchronization procedure |
| US5727034A (en) * | 1995-07-26 | 1998-03-10 | Nokia Telecommunications Oy | Apparatus and method for synchronizing base sites individually in a communication system |
| GB9930132D0 (en) * | 1999-12-22 | 2000-02-09 | Ericsson Telefon Ab L M | Telecommunication network synchronisation |
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2006
- 2006-01-20 CN CNB2006100016575A patent/CN100442903C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008110083A1 (en) * | 2007-03-12 | 2008-09-18 | Huawei Technologies Co., Ltd. | Transmission method, device and system for iub interface service transmitting based ip |
| CN102035638A (en) * | 2009-09-25 | 2011-04-27 | 华为技术有限公司 | Clock source selection processing method, device and system |
| CN102035638B (en) * | 2009-09-25 | 2014-09-03 | 华为技术有限公司 | Clock source selection processing method, device and system |
| CN101909316A (en) * | 2010-08-17 | 2010-12-08 | 中兴通讯股份有限公司 | Operation maintenance method and system |
| CN101909316B (en) * | 2010-08-17 | 2015-05-20 | 中兴通讯股份有限公司 | Operation maintenance method and system |
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| CN100442903C (en) | 2008-12-10 |
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Effective date of registration: 20211221 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |