CN105207768A - Reminding method and system for time inconsistency between router side access device and Internet - Google Patents
Reminding method and system for time inconsistency between router side access device and Internet Download PDFInfo
- Publication number
- CN105207768A CN105207768A CN201510697660.4A CN201510697660A CN105207768A CN 105207768 A CN105207768 A CN 105207768A CN 201510697660 A CN201510697660 A CN 201510697660A CN 105207768 A CN105207768 A CN 105207768A
- Authority
- CN
- China
- Prior art keywords
- time
- router
- network
- server
- ntp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
Abstract
The invention provides a reminding method and system for time inconsistency between a router side access device and the Internet. The method comprises the following steps: sending a network time protocol message to a time server when receiving access of the device; obtaining the Internet time and the local time of the current access device after receiving the network time protocol message fed back by the time server; if the difference value of the internet time and the local time of the current access device is larger than or equal to the preset threshold value, sending reminding information about correcting the local time to the current access device. According to the reminding method and system, a user can be reminded of timely correcting the device time by the reminding method and system actively when the time of the router side access device and the time of the internet are inconsistent.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of router side access equipment and the inconsistent based reminding method of internet time and system.
Background technology
Mobile phone and computer have become the visual plant of instruction time in our life, but due to many reasons, the time of mobile phone and computer is forbidden sometimes, such as: computer does not have the opening network time and CMOS (ComplementaryMetalOxideSemiconductor on mainboard, complementary metal oxide semiconductors (CMOS)) battery electric quantity deficiency, virus in computer, networking time synchronized function etc. do not opened by mobile phone.Time will definitely not cause various problems to us, and have influence on the many-sides such as life, work, therefore the time accuracy of mobile phone, computer is extremely important.
NTP (NetworkTimeProtocol, NTP (Network Time Protocol)) is used to a kind of agreement making each computer time in network synchronous.Its purposes is the clock synchronous of computer to UTC (CoordinatedUniversalTime, UTC Universal Time Coordinated), and its precision is at local area network (LAN) Nei Keda 0.1ms, and its precision of place most on the internet can reach 1-50ms.It can make computer carry out time synchronized to its server or clock source, and can provide the time adjustment of high accurancy and precision, and the mode of encrypted acknowledgment can be used to prevent vicious protocol attack.
At present, mobile phone and computer all do not have the method that initiatively the prompt facility time is inaccurate, and their acquiescences provide correct time, so user is forbidden the passively discover equipment time, and often the time problem of being forbidden has had influence on work and the life of user.
Summary of the invention
In view of this, the object of the invention is for above-mentioned technical problem, there is provided a kind of router side to access equipment and the inconsistent based reminding method of internet time and system, when router side accesses equipment and internet time is inconsistent, can initiatively point out user's calibrator (-ter) unit time.
The based reminding method that the invention provides the access of a kind of router side equipment and internet time inconsistent is applied on router, comprising: when receiving the access of equipment, to time server transmission NTP (Network Time Protocol) message; After receiving the NTP (Network Time Protocol) message that time server returns, obtain the local zone time of network time and current accessed equipment; If the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, then send the prompting of calibration local zone time to current accessed equipment.
Further, described NTP (Network Time Protocol) message comprises original time stamp, time of reception stamp and delivery time stamp field; Described to time server transmission NTP (Network Time Protocol) message, with the described NTP (Network Time Protocol) message receiving time server and return, comprise: when receiving the access of equipment, router sends NTP (Network Time Protocol) message to time server, and carries the time stamp T 1 when leaving router in the original time stamp field of NTP (Network Time Protocol) message; When the NTP (Network Time Protocol) message server time of advent, time server adds the time stamp T 2 arriving time server in the time of reception stamp field of NTP (Network Time Protocol) message; When NTP (Network Time Protocol) message time departure server, time server adds the time stamp T 3 of time departure server in the delivery time stamp field of NTP (Network Time Protocol) message; When the NTP (Network Time Protocol) message that router time server returns, the timestamp of router local zone time is T4.
Further, between described router and time server, round-trip delay=(T4-T1)-(T3-T2) of NTP (Network Time Protocol) message; Router relative time server time difference=((T2-T1)+(T3-T4))/2.
Further, described acquisition network time, comprising: according to the round-trip delay determination time server time of NTP (Network Time Protocol) message; Network time=time server time+time difference of router relative time server; Network time is preserved with timestamp form.
Further, the local zone time of described acquisition current accessed equipment, being comprised: the local zone time being parsed current accessed equipment by the function of time of browser, and is preserved with timestamp form by the local zone time of current accessed equipment.
Further, described method also comprises: router pre-sets time difference computing function and refresh function; If the local time difference of described network time and current accessed equipment is more than or equal to the threshold value pre-set, the then local zone time of prompting calibration current accessed equipment, comprise: when equipment is by browser access router, the local time difference of router allocating time mathematic interpolation function computing network time and current accessed equipment; If the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, then call the local zone time that refresh function ejects dialog box prompting calibration current accessed equipment.
Present invention also offers a kind of for router side access equipment and the inconsistent system for prompting of internet time, comprise router, the equipment of access router and time server, comprise: when router receives the access of equipment, send NTP (Network Time Protocol) message to time server; Time server returns NTP (Network Time Protocol) message to router; Router obtains the local zone time of network time and current accessed equipment, and when the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, sends the prompting of the local zone time of calibration current accessed equipment to equipment.
Further, described NTP (Network Time Protocol) message comprises original time stamp, time of reception stamp and delivery time stamp field; Described to time server transmission NTP (Network Time Protocol) message, NTP (Network Time Protocol) message is returned to router with described, comprise: when receiving the access of equipment, router sends NTP (Network Time Protocol) message to time server, and carries the time stamp T 1 when leaving router in the original time stamp field of NTP (Network Time Protocol) message; When the NTP (Network Time Protocol) message server time of advent, time server adds the time stamp T 2 arriving time server in the time of reception stamp field of NTP (Network Time Protocol) message; When NTP (Network Time Protocol) message time departure server, time server adds the time stamp T 3 of time departure server in the delivery time stamp field of NTP (Network Time Protocol) message; When the NTP (Network Time Protocol) message that router time server returns, the timestamp of router local zone time is T4; Between described router and time server, round-trip delay=(T4-T1)-(T3-T2) of NTP (Network Time Protocol) message; Router relative time server time difference=((T2-T1)+(T3-T4))/2.
Further, described acquisition network time, comprising: according to the round-trip delay determination time server time of NTP (Network Time Protocol) message; Network time=time server time+time difference of router relative time server; Network time is preserved with timestamp form; The local zone time of described acquisition current accessed equipment, being comprised: the local zone time being parsed current accessed equipment by the function of time of browser, and is preserved with timestamp form by the local zone time of current accessed equipment.
Further, described router also pre-sets time difference computing function and refresh function; When equipment is by browser access router, the local time difference of router allocating time mathematic interpolation function computing network time and current accessed equipment; If the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, router calls the local zone time that refresh function ejects dialog box prompting calibration current accessed equipment.
Compared to the prior art, beneficial effect of the present invention is: with the addition of reminding user Time Inconsistency prompting function in router side, when user is by mobile phone or computer to access router homepage, first router obtains network time by Network Time Protocol, then the time of access equipment is obtained by browser, calculate difference between the two, if difference is between the two greater than set point, eject the time of corresponding dialog box reminding user calibration local device, namely router side realize when access equipment and network time inconsistent time prompting function, adopt the mode reminding user calibrator (-ter) unit time initiatively, thus avoid user passive go find, decrease the possibility that the equipment time forbidden to have an impact to user.
Accompanying drawing explanation
Fig. 1 is the configuration diagram for router side access equipment and the inconsistent system for prompting of internet time disclosed in this invention.
Fig. 2 is the schematic flow sheet of router side disclosed in this invention access equipment and the inconsistent based reminding method of internet time.
Fig. 3 is the structural representation of Network Time Protocol message in the present invention's specific embodiment.
Embodiment
Describe the present invention below with reference to embodiment shown in the drawings; but these execution modes do not limit the present invention, the structure that those of ordinary skill in the art makes according to these execution modes, method or conversion functionally are all included in protection scope of the present invention.
The prompting that existing mobile phone and computer do not have the active warning subscriber equipment time inaccurate, therefore need user passive go find, which increase the possibility that the equipment time forbidden to have an impact to user.Be compared to prior art, the present invention proposes a kind of router side access equipment and the inconsistent based reminding method of internet time and system.
Fig. 1 is the configuration diagram for router side access equipment and the inconsistent system for prompting of internet time disclosed in this invention.As shown in Figure 1, user uses mobile phone or apparatus such as computer access router, between router and time server by Network Time Protocol by the time coordination of equipment to UTC.
Fig. 2 is the schematic flow sheet of router side disclosed in this invention access equipment and the inconsistent based reminding method of internet time.As shown in Figure 2, method of the present invention comprises:
Step 201, when router receives the access of equipment, sends NTP message to time server.
In this step, user uses mobile phone or apparatus such as computer access router, and router uses Network Time Protocol to send NTP message to time server.
Particularly, NTP form as shown in Figure 3, comprises following field:
LI: jump indicating device, warns the approaching boudoir second of inserting in the final moment of of that month last day;
VN:NTP protocol version;
Mode: pattern, this field comprises following value: 0-reserves; 1-symmetrical behaviour; 3-client computer; 4-server; 5-broadcasts; 6-NTP control information;
Stratum: to the entirety identification of local clock rank;
Poll: signed integer represents the largest interval between continuous information;
Precision: signed integer represents local clock accuracy;
RootDelay: have symbol fixing point sequence number to represent the total delay in Primary Reference source, the waypoint between the position 15 to 16 in very short time;
RootDispersion: represent the normal mistake relative to Primary Reference source without symbol fixing point sequence number, the waypoint between the position 15 to 16 in very short time;
ReferenceIdentifier: identify special reference source;
Original time stamp (OriginateTimestamp): be the time being separated client computer to server request, adopt 64 markers (Timestamp) forms;
Time of reception stamp (ReceiveTimestamp): be the time arriving client computer to server request, adopt 64 markers forms;
Delivery time stamp (TransmitTimestamp): be the time replying disjoint server to client computer, adopt 64 markers forms;
Authenticator (Optional): when achieving ntp authentication pattern, primary identifier and message digit territory just comprise defined message authentication codes (MAC) information.
Step 202, judges whether to receive the NTP message that time server returns, if so, carry out step 203; If not, then process ends.
In this step, the concrete form of NTP message returned, as front, repeats no more.
Step 203, obtains network time.
In this step, Internet has multiple time server, and the time source that time server obtains UTC can be atomic clock, observatory, satellite etc., and therefore, time server has time source accurately and reliably.
Router carries out parsing to NTP back message and obtains network time, and detailed process is as follows:
Router sends a NTP message to time server, and this NTP message is with timestamp when leaving router in OriginateTimestamp field, and this timestamp is very first time T1.
When this NTP message server time of advent, time server adds the timestamp of the server time of advent in the ReceiveTimestamp field of NTP message, and this timestamp is the second time T2.
When this NTP message time departure server, time server adds the timestamp of time departure server in the TransmitTimestamp field of NTP message, and this timestamp is the 3rd time T3.
When router receives this NTP message, the local zone time of router is the 4th time T4.
So far, router has had enough information to calculate two important parameters:
Round-trip delay Delay=(T4-T1)-(T3-T2) of NTP message.
The time difference offset=((T2-T1)+(T3-T4))/2 of router relative time server.
Router generally connects with multiple time server, according to the round-trip delay Delay of NTP message, can select best path and determine the time server time.
According to the time difference offset of router relative time server, router gets network time, namely network time=time server time+the time difference offset of router relative time server.
The network time that router parses goes out preserves with timestamp form, be from during 1970 01 month 01 day 00 Greenwich Mean Time 00 point 00 second to present total number of seconds.
Step 204, obtains the local zone time of current accessed equipment.
In this step, parsed the local zone time of current accessed equipment by the function of time of browser, and the local zone time of current accessed equipment is preserved with timestamp form.
Step 205, the local zone time of contrast network time and current accessed equipment, if the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, carry out step 206; If the local time difference of network time and current accessed equipment is less than the threshold value pre-set, then process ends.
Be compared to prior art, in the present invention, router pre-sets time difference computing function and calls alert function, when equipment is by browser access router, the local time difference of router allocating time mathematic interpolation function computing network time and current accessed equipment, and determine whether that calling prompting (alert) function ejects the local zone time that dialog box prompting user calibrates current accessed equipment according to difference.
Step 206, the local zone time of prompting calibration current accessed equipment.
In this step, if the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, such as 60 seconds, then send the prompting of calibration local zone time to current accessed equipment.
Compared with prior art, the present invention router side realize when access equipment and network time inconsistent time prompting function, adopt the mode reminding user calibrator (-ter) unit time initiatively, thus avoid user passive go find, decrease the possibility that the equipment time forbidden to have an impact to user.
Present invention also offers a kind of for router side access equipment and the inconsistent system for prompting of internet time, as shown in Figure 1, the router comprised, the equipment of access router and time server, wherein:
When router receives the access of equipment, send NTP (Network Time Protocol) message to time server;
Time server returns NTP (Network Time Protocol) message to router;
Router obtains the local zone time of network time and current accessed equipment, and when the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, sends the prompting of the local zone time of calibration current accessed equipment to equipment.
The concrete ins and outs of the system for prompting inconsistent with internet time for router side access equipment of the present invention can access ins and outs corresponding to the equipment based reminding method inconsistent with internet time with reference to aforesaid router side, therefore are not repeated herein.
Although the present invention discloses as above with preferred embodiment, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
Claims (10)
1. router side access equipment and the inconsistent based reminding method of internet time, is applied on router, it is characterized in that, comprising:
When receiving the access of equipment, send NTP (Network Time Protocol) message to time server;
After receiving the NTP (Network Time Protocol) message that time server returns, obtain the local zone time of network time and current accessed equipment;
If the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, send the prompting of calibration local zone time to current accessed equipment.
2. the based reminding method that router side access equipment as claimed in claim 1 is inconsistent with internet time, is characterized in that, described NTP (Network Time Protocol) message comprises original time stamp, time of reception stamp and delivery time and stabs field;
Described to time server transmission NTP (Network Time Protocol) message, and the described NTP (Network Time Protocol) message receiving time server and return, comprising:
When receiving the access of equipment, router sends NTP (Network Time Protocol) message to time server, and carries the time stamp T 1 when leaving router in the original time stamp field of NTP (Network Time Protocol) message;
When the NTP (Network Time Protocol) message server time of advent, time server adds the time stamp T 2 arriving time server in the time of reception stamp field of NTP (Network Time Protocol) message;
When NTP (Network Time Protocol) message time departure server, time server adds the time stamp T 3 of time departure server in the delivery time stamp field of NTP (Network Time Protocol) message;
When the NTP (Network Time Protocol) message that router time server returns, the timestamp of router local zone time is T4.
3. router side access equipment as claimed in claim 2 and the inconsistent based reminding method of internet time, it is characterized in that, between described router and time server, round-trip delay=(T4-T1)-(T3-T2) of NTP (Network Time Protocol) message;
Router relative time server time difference=((T2-T1)+(T3-T4))/2.
4. router side access equipment as claimed in claim 3 and the inconsistent based reminding method of internet time, is characterized in that, described acquisition network time, comprising:
According to the round-trip delay determination time server time of NTP (Network Time Protocol) message;
Network time=time server time+time difference of router relative time server;
Network time is preserved with timestamp form.
5. router side access equipment as claimed in claim 4 and the inconsistent based reminding method of internet time, it is characterized in that, the local zone time of described acquisition current accessed equipment, comprising:
Parsed the local zone time of current accessed equipment by the function of time of browser, and the local zone time of current accessed equipment is preserved with timestamp form.
6. router side access equipment as claimed in claim 5 and the inconsistent based reminding method of internet time, it is characterized in that, described method also comprises: router pre-sets time difference computing function and refresh function;
If the local time difference of described network time and current accessed equipment is more than or equal to the threshold value pre-set, sends the prompting of calibration local zone time to current accessed equipment, comprising:
When equipment is by browser access router, the local time difference of router allocating time mathematic interpolation function computing network time and current accessed equipment;
If the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, then call the local zone time that refresh function ejects dialog box prompting calibration current accessed equipment.
7., for router side access equipment and the inconsistent system for prompting of internet time, comprise router, the equipment of access router and time server, it is characterized in that, comprising:
When router receives the access of equipment, send NTP (Network Time Protocol) message to time server;
Time server returns NTP (Network Time Protocol) message to router;
Router obtains the local zone time of network time and current accessed equipment, and when the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, sends the prompting of calibration local zone time to current accessed equipment.
8. as claimed in claim 7 for the system for prompting that router side access equipment is inconsistent with internet time, it is characterized in that, described NTP (Network Time Protocol) message comprises original time stamp, time of reception stamp and delivery time and stabs field;
Describedly send NTP (Network Time Protocol) message to time server, and describedly return NTP (Network Time Protocol) message to router, comprising:
When receiving the access of equipment, router sends NTP (Network Time Protocol) message to time server, and carries the time stamp T 1 when leaving router in the original time stamp field of NTP (Network Time Protocol) message;
When the NTP (Network Time Protocol) message server time of advent, time server adds the time stamp T 2 arriving time server in the time of reception stamp field of NTP (Network Time Protocol) message;
When NTP (Network Time Protocol) message time departure server, time server adds the time stamp T 3 of time departure server in the delivery time stamp field of NTP (Network Time Protocol) message;
When the NTP (Network Time Protocol) message that router time server returns, the timestamp of router local zone time is T4;
Between described router and time server, round-trip delay=(T4-T1)-(T3-T2) of NTP (Network Time Protocol) message; Router relative time server time difference=((T2-T1)+(T3-T4))/2.
9., as claimed in claim 8 for router side access equipment and the inconsistent system for prompting of internet time, it is characterized in that, described acquisition network time, comprising: according to the round-trip delay determination time server time of NTP (Network Time Protocol) message; Network time=time server time+time difference of router relative time server; Network time is preserved with timestamp form;
The local zone time of described acquisition current accessed equipment, being comprised: the local zone time being parsed current accessed equipment by the function of time of browser, and is preserved with timestamp form by the local zone time of current accessed equipment.
10., as claimed in claim 9 for router side access equipment and the inconsistent system for prompting of internet time, it is characterized in that, described router also pre-sets time difference computing function and refresh function;
When equipment is by browser access router, the local time difference of router allocating time mathematic interpolation function computing network time and current accessed equipment;
If the local time difference of network time and current accessed equipment is more than or equal to the threshold value pre-set, router calls the local zone time that refresh function ejects dialog box prompting calibration current accessed equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697660.4A CN105207768B (en) | 2015-10-23 | 2015-10-23 | Router side access equipment and the inconsistent based reminding method of internet time and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697660.4A CN105207768B (en) | 2015-10-23 | 2015-10-23 | Router side access equipment and the inconsistent based reminding method of internet time and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105207768A true CN105207768A (en) | 2015-12-30 |
| CN105207768B CN105207768B (en) | 2018-06-19 |
Family
ID=54955227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510697660.4A Active CN105207768B (en) | 2015-10-23 | 2015-10-23 | Router side access equipment and the inconsistent based reminding method of internet time and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105207768B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686204A (en) * | 2016-07-18 | 2017-05-17 | 腾讯科技（深圳）有限公司 | Event processing method and device |
| CN107919933A (en) * | 2017-11-17 | 2018-04-17 | 深圳市泉眼网络科技有限公司 | A kind of method, apparatus, mobile terminal and the storage medium of time renewal |
| CN108075876A (en) * | 2016-11-18 | 2018-05-25 | 腾讯科技（深圳）有限公司 | A kind of time calibrating method, apparatus and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855915A (en) * | 2005-04-20 | 2006-11-01 | 华为技术有限公司 | Method for obtaining immediate system lime in worldwide interactive microwave access apparatus |
| CN1859373A (en) * | 2005-11-02 | 2006-11-08 | 华为技术有限公司 | Method and device for correting time of customer end through network time protocol |
| CN102421187A (en) * | 2011-12-01 | 2012-04-18 | 北京航天测控技术有限公司 | High-accuracy clock synchronization method of wireless sensor network |
| CN103220120A (en) * | 2012-01-20 | 2013-07-24 | 腾讯科技（深圳）有限公司 | Time synchronizing method of mobile terminal, mobile terminal and time synchronizing system |
| CN104994601A (en) * | 2015-06-01 | 2015-10-21 | 南京邮电大学 | 4G vehicle smart terminal system |
-
2015
- 2015-10-23 CN CN201510697660.4A patent/CN105207768B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855915A (en) * | 2005-04-20 | 2006-11-01 | 华为技术有限公司 | Method for obtaining immediate system lime in worldwide interactive microwave access apparatus |
| CN1859373A (en) * | 2005-11-02 | 2006-11-08 | 华为技术有限公司 | Method and device for correting time of customer end through network time protocol |
| CN102421187A (en) * | 2011-12-01 | 2012-04-18 | 北京航天测控技术有限公司 | High-accuracy clock synchronization method of wireless sensor network |
| CN103220120A (en) * | 2012-01-20 | 2013-07-24 | 腾讯科技（深圳）有限公司 | Time synchronizing method of mobile terminal, mobile terminal and time synchronizing system |
| CN104994601A (en) * | 2015-06-01 | 2015-10-21 | 南京邮电大学 | 4G vehicle smart terminal system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686204A (en) * | 2016-07-18 | 2017-05-17 | 腾讯科技（深圳）有限公司 | Event processing method and device |
| CN108075876A (en) * | 2016-11-18 | 2018-05-25 | 腾讯科技（深圳）有限公司 | A kind of time calibrating method, apparatus and system |
| CN108075876B (en) * | 2016-11-18 | 2020-09-08 | 腾讯科技（深圳）有限公司 | Time calibration method, device and system |
| CN107919933A (en) * | 2017-11-17 | 2018-04-17 | 深圳市泉眼网络科技有限公司 | A kind of method, apparatus, mobile terminal and the storage medium of time renewal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105207768B (en) | 2018-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101455014B (en) | Methods and devices for sending transmission-time or reception-time information for a transmitted or received message | |
| US7191354B2 (en) | Method for synchronizing a first clock to a second clock, processing unit and synchronization system | |
| EP1961186B1 (en) | Using travel-time as means for improving the accuracy of simple network time protocol | |
| CN109218007B (en) | Path selection method, device and storage medium | |
| WO2020172085A9 (en) | Wireless communication enhancements for transparent and boundary clocks | |
| US20180041329A1 (en) | Clock synchronization frequency offset estimation method adapted to wia-pa network | |
| CN105187148B (en) | A kind of network clock synchronization system and method based on ARM | |
| CN109669899B (en) | Method for adaptively adjusting serial port communication baud rate and serial port device | |
| EP1990938A1 (en) | Method for synchronizing a clock of a network component with a clock of a further network component and network component therefor | |
| US20090135677A1 (en) | System and method for application layer time synchronization without creating a time discrepancy or gap in time | |
| US9042411B1 (en) | System and method for accurate time sampling in presence of output delay | |
| US20150207877A1 (en) | Time synchronization client, a system and a non-transitory computer readable medium | |
| US11153838B1 (en) | Time synchronization enhancements for integrated 5G-TSN networking | |
| CN113328820B (en) | Method for interacting time synchronization message and network device | |
| CN105207768A (en) | Reminding method and system for time inconsistency between router side access device and Internet | |
| WO2018107606A1 (en) | Method and device for delivering messages in internet of things | |
| US20160065358A1 (en) | Synchronization method, intermediate node, and slave node of communication network system | |
| CN101808167B (en) | Method for procedure tracking, device and system | |
| CN101951300B (en) | Method for realizing accurate time tick of Ethernet | |
| EP2627040B1 (en) | Method for eliminating systematical error components in a set of one-way delay measurement results for communications between two or more computing systems in a communication network, apparatus for performing the method and computer program product | |
| CN103023596A (en) | Method for achieving synchronization of network device and time server | |
| CN116887393A (en) | Timing advance information acquisition method and device, storage medium and electronic device | |
| KR102064575B1 (en) | Method, apparatus, system and computer program for enhancing the accuracy of Time Synchronization between devices | |
| Guchhait et al. | Joint minimum variance unbiased and maximum likelihood estimation of clock offset and skew in one-way packet transmission | |
| DE102007031129A1 (en) | Mobile transceiver for use in e.g. wireless local area network, has distance determining unit determining distance between transceiver and another transceiver based on signal propagation delay between reception and transmission values |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201210 Address after: 313028 Industrial Park, balidian Town, Huzhou City, Zhejiang Province Patentee after: HUZHOU FENGYUAN AGRICULTURAL EQUIPMENT MANUFACTURE Co.,Ltd. Address before: 201616 No. 3666 Sixian Road, Songjiang District, Shanghai Patentee before: Phicomm (Shanghai) Co.,Ltd. |