CN104066102A - Fault positioning detection method, system and device of time synchronization system - Google Patents
Fault positioning detection method, system and device of time synchronization system Download PDFInfo
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Abstract
The invention discloses a fault positioning detection method, system and device of a time synchronization system. A master-slave link through nodes is established between a time server TS and a wireless base station. A transmission link is established between the wireless base station and the TS. The method comprises the steps that the TS receives wireless base station clock information transmitted by the wireless base station through the transmission link; the TS determines whether the difference between the received wireless base station clock information and local clock information exceeds set system tolerance; if the difference exceeds the set system tolerance, the TS indicates each node on the master-slave link to upload the own clock information to the TS; and the TS compares the received clock information of each node with the difference of the local clock information, and respectively confirms whether the set system tolerance is exceeded to determine a node with a time synchronization fault. According to the invention, the node with the time synchronization fault can be accurately detected.
Description
Technical field
The present invention relates to based on transmission system field, particularly a kind of fault location test method of clock synchronization system, system and device.
Background technology
IEEE1588V2 utilizes transfer system to transmit high-precision synchronous protocol standard, defined synchronous (PTP) agreement of precision interval clock of Ethernet, precision can reach the wonderful level of sub-micro, can realize Frequency Synchronization and time synchronized, and time synchronized refers to the Phase synchronization of time.
While carrying out time synchronized, this system is called to clock synchronization system, the principle that clock synchronization system carries out time synchronized is: main equipment (Master) and adopt synchronous (Sync) message from equipment (Slave), follow the tracks of (Follow_Up) message, postpone request (Delay_Req) message and delayed response (Delay_Resp) message and mutually notice precise time stamp, by optimal clock algorithm (BMC, Best Master ClockAlgorithm) select optimal clock source, complete frequency and time synchronized, as shown in Figure 1, Fig. 1 is main equipment and from the framework schematic diagram of interacting message between equipment in prior art.
Fig. 2 is the method for synchronizing time flow chart in prior art clock synchronization system, and its concrete steps are:
The picture transfer protocol of step 201, main equipment (PTP) application layer is to sending synchronization message from equipment, synchronization message comprises that this message leaves the evaluation time t1 ' of main equipment, and main equipment records the precise time t1 that synchronization message is left PTP application layer port simultaneously;
Step 202, from equipment, receive synchronization message, record synchronization message time of reception t2, report the PTP application layer from equipment simultaneously;
The PTP application layer of step 203, main equipment is to sending tracking message from equipment, and message is carried the precise time t1 that synchronization message is left PTP application layer port;
Step 204, from equipment receives this tracking message, record synchronization message from the precise time t1 of PTP application layer port;
After this step, the t1 ' and precise time t1 estimated time that can learn from equipment that synchronization message sends, reception t2 lock in time;
Step 205, from the PTP application layer transmission lag request message of equipment to main equipment, from this delay message of equipment records, leave the time t3 of PTP application layer port;
Step 206, main equipment record receive the time t4 that this postpones request message, by delayed response message, the time t4 that receives this delay request message are sent to from equipment.
Through after above-mentioned steps, can obtain formula (1) and formula (2):
Between master-slave equipment time difference=from offset+master-slave equipment message transfer length of delay=t2-t1 or the t2-t1 ' of equipment; Formula (1)
From between main equipment time difference=from master transmissions message delay value-from offset=t4-t3 formula (2) of equipment
Suppose that master-slave equipment message transfer length of delay, with identical from master transmissions message delay value, can draw from equipment: from the offset of equipment=((t2-t1)-(t4-t3))/2
Length of delay=((t4-t3)+(t2-t1))/2
Like this, from equipment, according to the offset from equipment, compensate the local zone time from equipment, realize the time synchronized from equipment and main equipment.
The Packet Transport Network of prior art (PTN) structural representation as shown in Figure 3, comprise: a plurality of PTN nodes have formed looped network, more than providing the time server (TS, Time Server) of master clock to be deployed in to like the online convergence-level of PTN, the PTN node being directly connected with TS is node A.Wireless base station, is connected on the node in PTN, such as wireless base station is connected on node E.When this wireless base station needs synchronous master clock, just between node A and node E, set up a master-slave synchronisation chain, in figure, be node A-Node B-node C-node D-node E, be called master-slave synchronisation chain, the foundation of master-slave synchronisation chain is automatically generated or is completed by human configuration by BMC.Each node on master-slave synchronisation chain adopts boundary clock (BC) pattern synchronization node on it, realizes synchronous step by step.As shown in Figure 3, the first node A of master-slave synchronisation chain and tail node E operation ordinary clock (OC) pattern, remaining intermediate node operation BC pattern, by Node B, be synchronized to node A, node C is synchronized to Node B, node D is synchronized to node C, and node E is synchronized to node D, finally realizes wireless base station and is time-synchronized to TS.
In Fig. 3, the timing tracking accuracy of each node and wireless base station depends on the hardware of service traffics and each node, such as one of them node may cause the precision of time synchronized to decline to a great extent due to the crystal oscillator fault of self timer.On principal and subordinate's link, if the synchronous fault of intermediate node time of origin will have a strong impact on the timing tracking accuracy of downstream node.And when time synchronization problem occurs, downstream node cannot be known upstream node whether time synchronized fault has occurred, further cannot there is time synchronized fault by clear and definite which upstream node.For example, in Fig. 3, such as clock synchronous fault appears in the node D port being connected with node C, cause timing tracking accuracy to decline, but because the Node B port time synchronized course of work being connected with node C is normal, B node can not found node C time synchronized fault, and node D can only synchronization node C time of output, also can not find the clock synchronous fault of node C, therefore,, on whole principal and subordinate's link, do not find the fault of node C, this will cause the timing tracking accuracy degradation of wireless base station, further understands traffic affecting and transmits.
Summary of the invention
In view of this, the invention provides a kind of fault location test method of clock synchronization system, the method can accurately detect the node of time synchronized fault.
The present invention also provides a kind of fault location detection system of clock synchronization system, and this system can accurately detect the node of time synchronized fault.
The present invention also provides a kind of fault location checkout gear of clock synchronization system, and this device can accurately detect the node of time synchronized fault.
For achieving the above object, technical scheme of the invention process is specifically achieved in that
A fault location test method for clock synchronization system, sets up and has the principal and subordinate's link through node between time server TS and wireless base station, between wireless base station and TS, sets up transmission link, and the method comprises:
TS receives wireless base station through the wireless base station clock information of transmission link transmission, TS determines whether the wireless base station clock information of reception and the difference of local clock information surpass the system tolerance value arranging, if surpassed, each node on TS indication principal and subordinate link is uploaded to respectively TS by self clock information;
TS compares with the difference of local clock information respectively according to each received nodal clock information, according to being confirmed whether respectively, surpasses the system tolerance value arranging, and determines the node of time synchronized fault.
The node of described definite time synchronized fault is:
Hop-by-hop node in principal and subordinate's link is judged one by one, determined that in the node that surpasses set system tolerance value in principal and subordinate's link be the node of time synchronized fault from the nearest node of TS.
When described transmission link transmission wireless base station clock information and each node transfer clock information, TS and adjacent node adopt OC pattern, adopt TC pattern between adjacent node, and wireless base station and adjacent node adopt OC pattern.
The wireless base station clock information that described TS receives is through the node hop-by-hop transparent transmission on transmission link, and the nodal clock information in principal and subordinate's link that TS receives is through node hop-by-hop transparent transmission between the two.
Between described wireless base station and TS, set up transmission link and be principal and subordinate's link of TS and wireless base station or non-principal and subordinate's link from wireless base station through node the protection link to TS.
The link that each node on principal and subordinate's link is uploaded to respectively TS by self clock information be principal and subordinate's link between TS and node or non-principal and subordinate's link from node to TS between protection link.
A fault location detection system for clock synchronization system, comprising: the node between wireless base station, TS, TS and wireless base station in principal and subordinate's link, set up the transmission link between wireless base station and TS, wherein,
Wireless base station, for sending to TS by wireless base station clock information through transmission link;
Node, under the indication of TS, the transmission link by nodal clock information between wireless base station and node is transferred to TS;
TS, for receiving wireless base station through the wireless base station of link transmission clock information, whether the wireless base station clock information determine receiving and the difference of local clock information surpass the system tolerance value of setting, if surpassed, indicate each node that self clock information is uploaded respectively; According to each received nodal clock information, compare with the difference of local clock information respectively, according to being confirmed whether respectively, surpass the system tolerance value arranging, determine the node of time synchronized fault.
Transmission link between described wireless base station and TS be principal and subordinate's link of TS and wireless base station or non-principal and subordinate's link from wireless base station through node the protection link to TS;
Link between described node and TS be principal and subordinate's link between TS and node or non-principal and subordinate's link from node to TS between protection link.
A fault location checkout gear for clock synchronization system, comprising: transceiver module, judge module and indicating module, wherein,
Transceiver module, for receiving wireless base station through the wireless base station of link transmission clock information; Self clock information that receives that each node uploads respectively;
Judge module, for determining whether the wireless base station clock information of reception and the difference of local clock information surpass the system tolerance value arranging, if surpassed, sends Indication message to indicating module; According to each received nodal clock information, compare with the difference of local clock information respectively, according to being confirmed whether respectively, surpass the system tolerance value arranging, determine the node of time synchronized fault;
Indicating module, indicates each node that self clock information is uploaded respectively for the Indication message sending according to judge module.
A fault location checkout gear for clock synchronization system, comprising:
Upper transmission module, for uploading self clock information, by the clock information transparent transmission receiving.
As can be seen from the above scheme, method provided by the invention is after completing the time synchronized of principal and subordinate's link, wireless base station passes through principal and subordinate's link transmission to TS by wireless base station clock information, whether the difference of the definite wireless base station clock information receiving of TS and local clock information surpasses the system tolerance value arranging, if surpassed, indicate each node on principal and subordinate's link that self clock information is uploaded to respectively to TS, TS compares with the difference of local clock information respectively according to each received nodal clock information, be confirmed whether respectively to surpass the system tolerance value arranging, accurately determine the node of time synchronized fault.Further, set up non-principal and subordinate's link from wireless base station through node the protection link to TS, by this protection link, whether the difference of the definite wireless base station clock information receiving of TS and local clock information surpasses the system tolerance value arranging, if surpassed, set up respectively the node from each principal and subordinate's link of non-principal and subordinate's link to the protection link of TS, protection link by the node from each principal and subordinate's link to TS, each node on indication principal and subordinate link is uploaded to respectively TS by self clock information, TS compares with the difference of local clock information respectively according to each received nodal clock information, be confirmed whether respectively to surpass the system tolerance value arranging, accurately determine the node of time synchronized fault.Like this, just the node of time synchronized fault can accurately be detected.
Accompanying drawing explanation
Fig. 1 is main equipment and from the framework schematic diagram of interacting message between equipment in prior art;
Fig. 2 is the method for synchronizing time flow chart in prior art clock synchronization system;
Principal and subordinate's link schematic diagram that Fig. 3 provides for prior art;
The fault location test method flow chart of the clock synchronization system that Fig. 4 provides for the embodiment of the present invention;
Principal and subordinate's link schematic diagram that Fig. 5 provides for the embodiment of the present invention;
Fault location test method two flow charts of the clock synchronization system that Fig. 6 provides for the embodiment of the present invention;
Non-principal and subordinate's link that Fig. 7 provides for the embodiment of the present invention from wireless base station through node the protection link schematic diagram to TS;
The fault location detection system structural representation of the clock synchronization system that Fig. 8 provides for the embodiment of the present invention;
The TS structural representation that Fig. 9 provides for the embodiment of the present invention;
The node structure schematic diagram that Figure 10 provides for the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
For detect from TS through node to the node of free synchronous fault whether principal and subordinate's link of mobile base station, the present invention is after completing the time synchronized of principal and subordinate's link, between time server TS and wireless base station, set up and have the principal and subordinate's link through node, between wireless base station and TS, set up transmission link, the method comprises: TS receives wireless base station through the wireless base station clock information of transmission link transmission, TS determines whether the wireless base station clock information of reception and the difference of local clock information surpass the system tolerance value arranging, if surpassed, each node on TS indication principal and subordinate link is uploaded to respectively TS by self clock information, TS compares with the difference of local clock information respectively according to each received nodal clock information, according to being confirmed whether respectively, surpasses the system tolerance value arranging, and determines the node of time synchronized fault.
Here; the link of setting up can for principal and subordinate's link of TS and wireless base station or non-principal and subordinate's link from wireless base station through node the protection link to TS, the link between node and TS be principal and subordinate's link between TS and node or non-principal and subordinate's link from node to TS between protection link.Below be elaborated respectively.
After completing the time synchronized of principal and subordinate's link, wireless base station passes through principal and subordinate's link transmission to TS by wireless base station clock information, whether the difference of the definite wireless base station clock information receiving of TS and local clock information surpasses the system tolerance value arranging, if surpassed, indicate each node on principal and subordinate's link that self clock information is uploaded to respectively to TS, TS compares with the difference of local clock information respectively according to each received nodal clock information, be confirmed whether respectively to surpass the system tolerance value arranging, accurately determine the node of time synchronized fault.
The fault location test method flow chart of the clock synchronization system that Fig. 4 provides for the embodiment of the present invention, sets up from TS the principal and subordinate's link to mobile base station through node, and after completing the time synchronized of principal and subordinate's link, the method also comprises:
Step 401, TS receive wireless base station through the wireless base station clock information of node transmission;
Whether the difference of step 402, the definite wireless base station clock information receiving of TS and local clock information surpasses the system tolerance value arranging, if surpassed, performs step 403; If not, process ends;
Each node on step 403, TS indication principal and subordinate link is uploaded to respectively TS by self clock information;
Step 404, TS compare with the difference of local clock information respectively according to each received nodal clock information, according to being confirmed whether respectively, surpass the system tolerance value arranging, and determine the node of time synchronized fault;
In this step, after the hop-by-hop node in principal and subordinate's link is all judged one by one, determine that in principal and subordinate's link, surpassing in the node of system tolerance value is the node of time synchronized fault from the nearest node of TS.
In the method described in Fig. 4, when principal and subordinate's link passback wireless base station clock information and each node passback clock information, TS and adjacent node adopt OC pattern, adopt transparent clock (TC) pattern between adjacent node, and wireless base station and adjacent node adopt OC pattern.TC pattern is exactly from main equipment, the clock information of self to be transparent to from equipment by each node, makes can carry out time synchronized from equipment, and this TC pattern is prior art.
In the method described in Fig. 4, node in principal and subordinate's link is distributed in core net, converges in net and Access Network, mobile base station is by the node access principal and subordinate link of Access Network, TS is by the node access principal and subordinate link of core net, and the node of Access Network and the node of core net are by converging the mutual clock information of node of net.
In the method described in Fig. 4, the wireless base station clock information that TS receives is through the node hop-by-hop transmission on principal and subordinate's link, and the nodal clock information in principal and subordinate's link that TS receives is also through node hop-by-hop transmission between the two.
In the method, each node on principal and subordinate's link, after receiving the clock information of downstream node transmission, is just uploaded to upstream node, until TS, and do not upgrade the clock on synchronous this node.
Lift an object lesson explanation, principal and subordinate's link schematic diagram that Fig. 5 provides for the embodiment of the present invention, this principal and subordinate's link is the principal and subordinate's link based on Fig. 3, dotted line in way is clock information passback path, adopt the present invention, if there is fault in the time synchronized in principal and subordinate's link, the difference of the definite wireless base station clock information receiving of TS and local clock information surpasses the system tolerance value arranging, then indicate each node in principal and subordinate's link to return respectively clock information, inaccurate by detecting from the clock information of which node, judge abort situation.For example, if the downlink port of node C breaks down, TS finds that the passback clock information of node A, Node B and node C is accurate, and the passback clock information of node D and node E is inaccurate, thereby determine, is that the downlink port of node C is to the link occurs fault of node D.
The above-mentioned method providing of the present invention is provided, in particular cases a kind of, the node of time synchronized fault cannot be detected: in principal and subordinate's link one across section because certain reason such as having changed one-sided optical fiber has caused length of delay two-way when inconsistent, the node of time synchronized fault cannot be detected.
Specifically, when the length of delay of principal and subordinate's link two-way inconsistent, when carrying out the time synchronized of principal and subordinate's link, upper hop node is main equipment, lower hop node is from equipment, upper hop node is length of delay 1 to the link delay between lower hop node, and lower hop node is length of delay 2 to the link delay between upper hop node, according to formula (1) and formula (2), obtains:
The actual offset from equipment=((t2-t1)-(t4-t3))/2+(length of delay 2-length of delay 1)/2;
In this state, the offset from equipment that downstream node is estimated=((t2-t1)-(t4-t3))/2, this makes is that deviation appears in time synchronization process, will affect principal and subordinate's link all nodes afterwards.
In the time synchronization process of subsequent detection principal and subordinate link, lower hop node is as main equipment, upper hop node is as from equipment, upper hop node is length of delay 2 to the link delay between lower hop node, lower hop node is length of delay 1 to the link delay between upper hop node, according to formula (3) and formula (4), obtains:
The actual offset from equipment=((T2-T1)-(T4-T3))/2+(length of delay 1-length of delay 2)/2;
And the offset from equipment that upstream node is estimated=((T2-T1)-(T4-T3))/2.
If the clock time of upstream node is t0, for correct time synchronization process, should be the estimated time after the compensation that upstream node receives: the offset from equipment=(t2-t1)-(t4-t3)/2+(T2-T1 that the offset from equipment that t0+ downstream node is estimated+upstream node is estimated)-(T4-T3)/2;
For actual conditions, the real time after the compensation that upstream node receives should be: the offset from equipment of the offset+reality from equipment of t0+ reality=(t2-t1)-(t4-t3)/2+(T2-T1)-(T4-T3)/2.
Here, real time after the compensation that receive the estimated time after the compensation that upstream node receives with upstream node is identical, so in principal and subordinate's link one across section because certain reason such as having changed one-sided optical fiber has caused length of delay two-way when inconsistent, the node of time synchronized fault cannot be detected.In order to address this problem, the present invention adopts non-same routing plan, comprise: set up non-principal and subordinate's link from wireless base station through node the protection link to TS, by this protection link, whether the difference of the definite wireless base station clock information receiving of TS and local clock information surpasses the system tolerance value arranging, if surpassed, set up respectively the node from each principal and subordinate's link of non-principal and subordinate's link to the protection link of TS, protection link by the node from each principal and subordinate's link to TS, each node on indication principal and subordinate link is uploaded to respectively TS by self clock information, TS compares with the difference of local clock information respectively according to each received nodal clock information, be confirmed whether respectively to surpass the system tolerance value arranging, accurately determine the node of time synchronized fault.
Fault location test method two flow charts of the clock synchronization system that Fig. 6 provides for the embodiment of the present invention, its concrete steps are:
Step 601, set up non-principal and subordinate's link from wireless base station through node the protection link to TS;
Step 602, TS are by this protection link, and whether the difference of definite wireless base station clock information receiving and local clock information surpasses the system tolerance value arranging, if surpassed, performs step 603; If not, process ends;
Step 603, TS set up respectively the node from each principal and subordinate's link of non-principal and subordinate's link to the protection link of TS;
Step 604, TS be the protection link to TS by the node from each principal and subordinate's link, and each node on indication principal and subordinate link is uploaded to respectively TS by self clock information;
Step 605, TS compare with the difference of local clock information respectively according to each received nodal clock information, are confirmed whether respectively to surpass the system tolerance value arranging, and determine the node of time synchronized fault.
In this step, after the hop-by-hop node in principal and subordinate's link is all judged one by one, determine that in principal and subordinate's link, surpassing in the node of system tolerance value is the node of time synchronized fault from the nearest node of TS.
In the method described in Fig. 6; from wireless base station through node the protection link passback wireless base station clock information to TS; and during each node passback clock information of the protection link from the node of each principal and subordinate's link to TS; TS and adjacent node adopt OC pattern; between adjacent node, adopt TC pattern, wireless base station and adjacent node adopt OC pattern.
In the method described in Fig. 6; the wireless base station clock information that TS receives be through wireless base station through node to the node hop-by-hop transmission on the protection link of TS, the nodal clock information in principal and subordinate's link that TS receives is to transmit to the node hop-by-hop between the protection link of TS through the node of principal and subordinate's link.
Lift an object lesson explanation, non-principal and subordinate's link that Fig. 7 provides for the embodiment of the present invention from wireless base station through node the protection link schematic diagram to TS, this principal and subordinate's link is the principal and subordinate's link based on Fig. 3, dotted line in way is clock information passback path, adopt the present invention, set up non-principal and subordinate's link from wireless base station through node the protection link to TS, as shown in figure dotted line, by this protection link, the difference of the definite wireless base station clock information receiving of TS and local clock information surpasses the system tolerance value arranging, then indicate each node in principal and subordinate's link to pass through respectively each set up node to the protection link passback clock information of non-principal and subordinate's link of TS, as shown in figure dotted line, inaccurate by detecting from the clock information of which node, judge abort situation.For example, if the downlink port of node C breaks down, TS finds that the passback clock information of node A, Node B and node C is accurate, and the passback clock information of node D and node E is inaccurate, thereby determine, is that the downlink port of node C is to the link occurs fault of node D.
The fault location detection system structural representation of the clock synchronization system that Fig. 8 provides for the embodiment of the present invention, comprising: the node between wireless base station, TS, TS and wireless base station in principal and subordinate's link, set up the transmission link between wireless base station and TS, wherein,
Wireless base station, for sending to TS by wireless base station clock information through transmission link;
Node, under the indication of TS, the transmission link by nodal clock information between wireless base station and node is transferred to TS;
TS, for receiving wireless base station through the wireless base station of link transmission clock information, whether the wireless base station clock information determine receiving and the difference of local clock information surpass the system tolerance value of setting, if surpassed, indicate each node that self clock information is uploaded respectively; According to each received nodal clock information, compare with the difference of local clock information respectively, according to being confirmed whether respectively, surpass the system tolerance value arranging, determine the node of time synchronized fault.
In this system, the wireless base station of setting up and the transmission link between TS can for principal and subordinate's link of TS and wireless base station or non-principal and subordinate's link from wireless base station through node the protection link to TS.
In this system, the link between node and TS be principal and subordinate's link between TS and node or non-principal and subordinate's link from node to TS between protection link.
Fig. 9 is the TS structural representation that the embodiment of the present invention provides, and comprising: transceiver module, judge module and indicating module, wherein,
Transceiver module, for receiving wireless base station through the wireless base station of link transmission clock information; Self clock information that receives that each node uploads respectively;
Judge module, for determining whether the wireless base station clock information of reception and the difference of local clock information surpass the system tolerance value arranging, if surpassed, sends Indication message to indicating module; According to each received nodal clock information, compare with the difference of local clock information respectively, according to being confirmed whether respectively, surpass the system tolerance value arranging, determine the node of time synchronized fault;
Indicating module, indicates each node that self clock information is uploaded respectively for the Indication message sending according to judge module.
In this structure, between described transceiver module and node, adopt OC pattern to carry out the transmission of clock information.
Figure 10 is the node structure schematic diagram that the embodiment of the present invention provides, and comprising: upper transmission module, and for self clock information is uploaded, by the clock information transparent transmission receiving.
In this structure, also comprise that indication confirms module, for receiving after the indication of TS, upper transmission module is uploaded self clock information again, by the clock information transparent transmission receiving.
More than lift preferred embodiment; the object, technical solutions and advantages of the present invention are further described; institute is understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a fault location test method for clock synchronization system, is characterized in that, between time server TS and wireless base station, sets up and has the principal and subordinate's link through node, between wireless base station and TS, sets up transmission link, and the method comprises:
TS receives wireless base station through the wireless base station clock information of transmission link transmission, TS determines whether the wireless base station clock information of reception and the difference of local clock information surpass the system tolerance value arranging, if surpassed, each node on TS indication principal and subordinate link is uploaded to respectively TS by self clock information;
TS compares with the difference of local clock information respectively according to each received nodal clock information, according to being confirmed whether respectively, surpasses the system tolerance value arranging, and determines the node of time synchronized fault.
2. the method for claim 1, is characterized in that, the node of described definite time synchronized fault is:
Hop-by-hop node in principal and subordinate's link is judged one by one, determined that in the node that surpasses set system tolerance value in principal and subordinate's link be the node of time synchronized fault from the nearest node of TS.
3. the method for claim 1, it is characterized in that, when described transmission link transmission wireless base station clock information and each node transfer clock information, TS and adjacent node adopt OC pattern, between adjacent node, adopt TC pattern, wireless base station and adjacent node adopt OC pattern.
4. the method for claim 1, it is characterized in that, the wireless base station clock information that described TS receives is through the node hop-by-hop transparent transmission on transmission link, and the nodal clock information in principal and subordinate's link that TS receives is through node hop-by-hop transparent transmission between the two.
5. the method for claim 1, is characterized in that, between described wireless base station and TS, set up transmission link and be principal and subordinate's link of TS and wireless base station or non-principal and subordinate's link from wireless base station through node the protection link to TS.
6. the method for claim 1, is characterized in that, the link that each node on principal and subordinate's link is uploaded to respectively TS by self clock information be principal and subordinate's link between TS and node or non-principal and subordinate's link from node to TS between protection link.
7. a fault location detection system for clock synchronization system, is characterized in that, comprising: the node between wireless base station, TS, TS and wireless base station in principal and subordinate's link, set up the transmission link between wireless base station and TS, wherein,
Wireless base station, for sending to TS by wireless base station clock information through transmission link;
Node, under the indication of TS, the transmission link by nodal clock information between wireless base station and node is transferred to TS;
TS, for receiving wireless base station through the wireless base station of link transmission clock information, whether the wireless base station clock information determine receiving and the difference of local clock information surpass the system tolerance value of setting, if surpassed, indicate each node that self clock information is uploaded respectively; According to each received nodal clock information, compare with the difference of local clock information respectively, according to being confirmed whether respectively, surpass the system tolerance value arranging, determine the node of time synchronized fault.
8. system as claimed in claim 7, is characterized in that, the transmission link between described wireless base station and TS be principal and subordinate's link of TS and wireless base station or non-principal and subordinate's link from wireless base station through node the protection link to TS;
Link between described node and TS be principal and subordinate's link between TS and node or non-principal and subordinate's link from node to TS between protection link.
9. a fault location checkout gear for clock synchronization system, is characterized in that, comprising: transceiver module, judge module and indicating module, wherein,
Transceiver module, for receiving wireless base station through the wireless base station of link transmission clock information; Self clock information that receives that each node uploads respectively;
Judge module, for determining whether the wireless base station clock information of reception and the difference of local clock information surpass the system tolerance value arranging, if surpassed, sends Indication message to indicating module; According to each received nodal clock information, compare with the difference of local clock information respectively, according to being confirmed whether respectively, surpass the system tolerance value arranging, determine the node of time synchronized fault;
Indicating module, indicates each node that self clock information is uploaded respectively for the Indication message sending according to judge module.
10. a fault location checkout gear for clock synchronization system, is characterized in that, comprising:
Upper transmission module, for uploading self clock information, by the clock information transparent transmission receiving.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007587A (en) * | 2019-03-27 | 2019-07-12 | 国网上海市电力公司 | A kind of electric system time synchronization clock apparatus does not have a power failure the method for replacement |
| CN111381251A (en) * | 2020-03-18 | 2020-07-07 | 杭州微萤科技有限公司 | Positioning system and synchronization chain self-optimization method thereof |
| CN112838939A (en) * | 2019-11-25 | 2021-05-25 | 中国移动通信有限公司研究院 | Synchronous network fault judgment method and equipment |
| CN113157481A (en) * | 2021-04-28 | 2021-07-23 | 中国工商银行股份有限公司 | Cluster-based server jump time fault processing method, device and system |
| CN114173277A (en) * | 2021-10-29 | 2022-03-11 | 四川中电昆辰科技有限公司 | Positioning base station synchronization and displacement monitoring system and monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1815970A (en) * | 2005-02-01 | 2006-08-09 | 华为技术有限公司 | Method for detecting network chain fault and positioning said fault |
| US7146516B2 (en) * | 2002-12-20 | 2006-12-05 | Invensys Systems, Inc. | Time synchronization schemes wherein at least one data message associates a hardware pulse with a future time |
| CN101227205A (en) * | 2008-01-29 | 2008-07-23 | 中兴通讯股份有限公司 | Clock detection method for wireless communication system |
| CN101790230A (en) * | 2009-01-23 | 2010-07-28 | 华为技术有限公司 | Precision time protocol node, time stamp operation method and time synchronization system |
| CN102546009A (en) * | 2012-01-17 | 2012-07-04 | 华为技术有限公司 | Optical fiber symmetry detecting method and device |
-
2013
- 2013-03-18 CN CN201310085564.5A patent/CN104066102B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7146516B2 (en) * | 2002-12-20 | 2006-12-05 | Invensys Systems, Inc. | Time synchronization schemes wherein at least one data message associates a hardware pulse with a future time |
| CN1815970A (en) * | 2005-02-01 | 2006-08-09 | 华为技术有限公司 | Method for detecting network chain fault and positioning said fault |
| CN101227205A (en) * | 2008-01-29 | 2008-07-23 | 中兴通讯股份有限公司 | Clock detection method for wireless communication system |
| CN101790230A (en) * | 2009-01-23 | 2010-07-28 | 华为技术有限公司 | Precision time protocol node, time stamp operation method and time synchronization system |
| CN102546009A (en) * | 2012-01-17 | 2012-07-04 | 华为技术有限公司 | Optical fiber symmetry detecting method and device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007587A (en) * | 2019-03-27 | 2019-07-12 | 国网上海市电力公司 | A kind of electric system time synchronization clock apparatus does not have a power failure the method for replacement |
| CN112838939A (en) * | 2019-11-25 | 2021-05-25 | 中国移动通信有限公司研究院 | Synchronous network fault judgment method and equipment |
| CN112838939B (en) * | 2019-11-25 | 2023-04-07 | 中国移动通信有限公司研究院 | Synchronous network fault judgment method and equipment |
| CN111381251A (en) * | 2020-03-18 | 2020-07-07 | 杭州微萤科技有限公司 | Positioning system and synchronization chain self-optimization method thereof |
| CN113157481A (en) * | 2021-04-28 | 2021-07-23 | 中国工商银行股份有限公司 | Cluster-based server jump time fault processing method, device and system |
| CN113157481B (en) * | 2021-04-28 | 2024-06-25 | 中国工商银行股份有限公司 | Cluster-based server time-hopping fault processing method, device and system |
| CN114173277A (en) * | 2021-10-29 | 2022-03-11 | 四川中电昆辰科技有限公司 | Positioning base station synchronization and displacement monitoring system and monitoring method |
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