CN109660959A - Method for synchronizing time and device - Google Patents
Method for synchronizing time and device Download PDFInfo
- Publication number
- CN109660959A CN109660959A CN201910163865.2A CN201910163865A CN109660959A CN 109660959 A CN109660959 A CN 109660959A CN 201910163865 A CN201910163865 A CN 201910163865A CN 109660959 A CN109660959 A CN 109660959A
- Authority
- CN
- China
- Prior art keywords
- time
- node
- source node
- broadcast message
- message packet
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
Abstract
The present invention provides a kind of method for synchronizing time and device, belongs to field of communication technology.Method for synchronizing time of the invention, comprising: receive the intersection broadcast message packet that each source node is sent, and record the time for receiving and intersecting broadcast message packet；Wherein, intersecting broadcast message packet includes: the generation time for intersecting broadcast message packet；The generation time of the intersection broadcast message packet sent according to each source node received, the time for receiving intersection broadcast message packet recorded, and source node transmission delay and own node reception delay, calculate own node and each source node timing time it is poor；According to the present timing time of own node and calculated own node and each source node timing time it is poor, calculate the present timing time of each source node；According to the present timing time of own node calculated each source node the present timing time, synchronization time is calculated.
Description
Technical field
The invention belongs to fields of communication technology, and in particular to a kind of method for synchronizing time and device.
Background technique
In wireless sensor network, node is in unmanned maintenance, in rugged environment.Due to sensor node mainly by
Battery is powered, and energy consumption problem becomes the significant problem for restricting network lifetime.
Node in network must just carry out time synchronization to efficiently cooperate.And traditional method for synchronizing time
It needs periodically to carry out the whole network to synchronize to will lead to a large amount of energy consumption.Since sensor network is limited by energy, design
A kind of method for synchronizing time of low-power consumption becomes crucial research field.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, provide a kind of method for synchronizing time and
Device.
Solving technical solution used by present invention problem is a kind of method for synchronizing time, comprising:
The intersection broadcast message packet that each source node is sent is received, and records the time for receiving and intersecting broadcast message packet；
Wherein, the broadcast message packet that intersects includes: the generation time for intersecting broadcast message packet；
The generation time of the intersection broadcast message packet sent according to each source node received, the reception recorded
To the transmission delay for the time and source node for intersecting broadcast message packet and the reception delay of own node, own node is calculated
It is poor with the timing time of each source node；
According to the present timing time of own node and calculated own node and each source node timing time
Difference calculates the present timing time of each source node；
According to the present timing time of own node calculated each source node the present timing time, be calculated
Synchronization time；
It is generated according to the synchronization time of calculating arrived and intersects broadcast message packet, to carry out intersecting the transmitting of broadcast message packet.
Preferably, the intersection broadcast message packet for receiving each source node and sending, and record and receive intersection broadcast
The step of time of packet includes:
Receive the intersection broadcast message packet of each source node；
The data information for intersecting broadcast message packet based on the received, judges whether the intersection broadcast message packet is for the first time
It is received, if then record receives the time of the intersection broadcast message.
Preferably, when the generation for the intersection broadcast message packet that each source node that the basis receives is sent
Between, recorded receive intersect broadcast message packet time and source node transmission delay and own node reception when
Prolong, calculates own node and the step of the timing time difference of each source node includes:
The generation time of the intersection broadcast message packet sent according to each source node received, the reception recorded
To the reception delay for the transmission delay and own node for intersecting time and source node that broadcast message includes, using formula:
tbn=(Tn+α+β)-Tbn, calculate the present timing time of each source node；
Wherein, tbnIndicate that the timing time of own node and n-th of source node is poor；TnIndicate what n-th of source node was sent
The generation time for intersecting broadcast message packet；α indicates the transmission delay of n-th of source node；When β indicates the reception of own node
Prolong；TbnIndicate the time for the intersection broadcast message packet that n-th of the sending node received that own node is recorded is sent, n is
Integer more than or equal to 1.
Preferably, described to be saved according to present timing time and the institute calculated own node of own node and each source
The timing time of point is poor, and the step of calculating the present timing time of each source node includes:
According to the present timing time of own node and calculated own node and each source node timing time
Difference, using formula:
Tn'=Tb+tbn, calculate the present timing time of each source node；
Wherein, TnThe present timing time of n-th of source node of ' expression；TbIndicate the present timing time of own node；tbn
Indicate that the timing time of own node and n-th of source node is poor.
Preferably, the present timing time according to own node calculated each source node present timing
Time, the step of synchronization time is calculated include:
According to the present timing time of own node calculated each source node the present timing time, using public affairs
Formula:
Wherein, Tb' indicate synchronization time；TnThe present timing time of n-th of source node of ' expression；TbIndicate own node
Present timing time, k are the number of source node.
Solving technical solution used by present invention problem is a kind of time synchronism apparatus, comprising:
Receiving module, the intersection broadcast message packet sent for receiving each source node, and record and receive intersection broadcast
The time of packet；Wherein, the broadcast message packet that intersects includes: the generation time for intersecting broadcast message packet；
First computing module, the generation of the intersection broadcast message packet for being sent according to each source node received
The reception of time, the transmission delay and own node for receiving the time and source node that intersect broadcast message packet recorded
Time delay, the timing time for calculating own node and each source node are poor；
Second computing module, for according to present timing time of own node and institute calculated own node with it is each
The timing time of source node is poor, calculates the present timing time of each source node；
Third computing module, for the present timing time according to own node calculated each source node it is current
Synchronization time is calculated in timing time；
Sending module generates for the synchronization time arrived according to calculating and intersects broadcast message packet, to carry out intersection broadcast
The transmitting of packet.
Preferably, the receiving module, specifically for receiving the intersection broadcast message packet of each source node；According to being connect
The data information of the intersection broadcast message packet received judges whether the intersection broadcast message packet is to be received for the first time, if then remembering
Record receives the time of the intersection broadcast message.
Preferably, first computing module, specifically for the friendship sent according to each source node received
The generation time of fork broadcast message packet, the transmission for receiving time and source node that intersection broadcast message includes recorded
The reception delay of time delay and own node, using formula:
tbn=(Tn+α+β)-Tbn, calculate the present timing time of each source node；
Wherein, tbnIndicate that the timing time of own node and n-th of source node is poor；TnIndicate what n-th of source node was sent
The generation time for intersecting broadcast message packet；α indicates the transmission delay of n-th of source node；When β indicates the reception of own node
Prolong；TbnIndicate the time for the intersection broadcast message packet that n-th of the sending node received that own node is recorded is sent, n is
Integer more than or equal to 1.
Preferably, second computing module, specifically for according to present timing time of own node and being calculated
The timing time of own node out and each source node is poor, using formula:
Tn'=Tb+tbn, calculate the present timing time of each source node；
Wherein, TnThe present timing time of n-th of source node of ' expression；TbIndicate the present timing time of own node；tbn
Indicate that the timing time of own node and n-th of source node is poor.
Preferably, the third computing module, specifically for being calculated according to the present timing time of own node
Each source node the present timing time, using formula:
Wherein, Tb' indicate synchronization time；TnThe present timing time of n-th of source node of ' expression；TbIndicate own node
Present timing time, k are the number of source node.
The invention has the following beneficial effects:
Node time synchronous method in the present invention eliminates time mistake without necessarily referring to synchronous step by step between node and node
Difference will not influence the performance of network entirety when respective nodes death.
Detailed description of the invention
Fig. 1 is the flow chart of the method for synchronizing time of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the time synchronism apparatus of the embodiment of the present invention 2.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula.
Embodiment 1:
As shown in Figure 1, wherein the executing subject in the present embodiment is to receive the present embodiment provides a kind of method for synchronizing time
Node, source node namely sending node provide a kind of method that receiving node carries out time synchronization.Time in the present embodiment is same
One step process specifically comprises the following steps:
S1, receive the intersection that each source node is sent and broadcast the message packet, and record receive intersect broadcast message packet when
Between；Wherein, the broadcast message packet that intersects includes: the generation time for intersecting broadcast message packet.
Specifically, source node each first, which generates, intersects broadcast message packet, it include source node in the intersection broadcast message packet
Generate the time for intersecting broadcast message packet；Later, intersection generated broadcast message packet is sent to reception section by each source node
Point；Finally, receiving node record receives the intersection broadcast message packet time that each source node is sent.
Wherein, it when receiving node record receives the intersection broadcast message packet time that each source node is sent, receives
Node first determines whether the intersection broadcast message packet is to be received for the first time, if then record receives the intersection broadcast message
Time will not record the time for receiving the intersection broadcast message if not then abandoning the intersection broadcast message packet.
S2, the intersection broadcast message packet that is sent according to each source node for receiving the generation time, recorded
The reception delay for intersecting the time of broadcast message packet and the transmission delay of source node and own node is received, itself is calculated
The timing time of node and each source node is poor.
Specifically, the generation of the intersection broadcast message packet sent in this step according to each source node received
Time, receiving of being recorded intersect the broadcast message transmission delay of the time and source node that include and connecing for own node
Time receiving prolongs, using formula: tbn=(Tn+α+β)-Tbn, calculate the present timing time of each source node.
Wherein, tbnIndicate that the timing time of own node and n-th of source node is poor；TnIndicate what n-th of source node was sent
The generation time for intersecting broadcast message packet；α indicates the transmission delay of n-th of source node；When β indicates the reception of own node
Prolong；TbnIndicate the time for the intersection broadcast message packet that n-th of the sending node received that own node is recorded is sent, n is
Integer more than or equal to 1.
In order to become apparent from the realization of step S2, node A and node C are denoted as two with source node respectively below；Send section
For point is indicated with node B, step S2 is illustrated.
The timing of the generation broadcast data packet of node A and node C is respectively TaAnd Tc, broadcast of the Node-B receiver to node A
Record receives timing T when message packageba, record receives timing T when receiving the broadcast message packet of node Cbc, data packet sending
The delay α at end, receiving end delay β；Node B and the timing time difference of node A and C are respectively as follows:
tba=(Ta+α+β)-Tba；
tbc=(Tc+α+β)-Tbc。
S3, according to present timing time of own node and calculated own node and each source node timing when
Between it is poor, calculate the present timing time of each source node.
Specifically, in this step according to the present timing time of own node and the calculated own node of institute with it is each
The timing time of source node is poor, using formula: Tn'=Tb+tbn, calculate the present timing time of each source node.
Wherein, TnThe present timing time of n-th of source node of ' expression；TbIndicate the present timing time of own node；tbn
Indicate that the timing time of own node and n-th of source node is poor.
In order to become apparent from the realization of step S2, node A and node C are denoted as two with source node respectively below；Send section
For point is indicated with node B, it is illustrated on the basis of step S2.
Wherein, specifically formula can be passed through for the present timing time of node A: Ta'=Tb+tbaIt is calculated；For
The present timing time of node C can specifically pass through formula: Tc'=Tb+tbcIt is calculated.
S4, according to present timing time of own node calculated each source node the present timing time, calculate
Obtain synchronization time.
Specifically, in this step according to the present timing time of own node calculated each source node it is current
Timing time, using formula:
Wherein, Tb' indicate synchronization time；TnThe present timing time of n-th of source node of ' expression；TbIndicate own node
Present timing time, k are the number of source node.
In order to become apparent from the realization of step S2, node A and node C are denoted as two with source node respectively below；Send section
For point is indicated with node B, it is illustrated on the basis of step S3.
Wherein it is possible to using the formulaCalculate node B synchronization time, when with the timing of substitute node B
Between.
S5, it is generated according to the synchronization time of calculating arrived and intersects broadcast message packet, to carry out intersecting the biography of broadcast message packet
It passs.
Node time synchronous method in the present embodiment eliminates the time without necessarily referring to synchronous step by step between node and node
Error will not influence the performance of network entirety when respective nodes death.
Embodiment 2:
As shown in Fig. 2, the time synchronism apparatus can use embodiment 1 the present embodiment provides a kind of time synchronism apparatus
Middle method for synchronizing time.The time synchronism apparatus includes: receiving module, the first computing module, the second computing module, third calculating
Module, sending module.
Wherein, receiving module is used to receive the intersection broadcast message packet that each source node is sent, and records and receive intersection
The time of broadcast message packet；Wherein, the broadcast message packet that intersects includes: the generation time for intersecting broadcast message packet.
Specifically, receiving module is specifically used for receiving the intersection broadcast message packet of each source node；Based on the received
The data information for intersecting broadcast message packet, judges whether the intersection broadcast message packet is to be received for the first time, if then recording reception
To the time of the intersection broadcast message.
The generation for the intersection broadcast message packet that first computing module is used to be sent according to each source node received
The reception of time, the transmission delay and own node for receiving the time and source node that intersect broadcast message packet recorded
Time delay, the timing time for calculating own node and each source node are poor.
First computing module is specifically used for the intersection broadcast message packet sent according to each source node received
The transmission delay and own node for receiving time and source node that intersection broadcast message includes for generating the time, being recorded
Reception delay, using formula:
tbn=(Tn+α+β)-Tbn, calculate the present timing time of each source node；
Wherein, tbnIndicate that the timing time of own node and n-th of source node is poor；TnIndicate what n-th of source node was sent
The generation time for intersecting broadcast message packet；α indicates the transmission delay of n-th of source node；When β indicates the reception of own node
Prolong；TbnIndicate the time for the intersection broadcast message packet that n-th of the sending node received that own node is recorded is sent, n is
Integer more than or equal to 1.
Second computing module, for according to present timing time of own node and institute calculated own node with it is each
The timing time of source node is poor, calculates the present timing time of each source node.
Second computing module be specifically used for according to present timing time of own node and institute calculated own node and
The timing time of each source node is poor, using formula:
Tn'=Tb+tbn, calculate the present timing time of each source node；
Wherein, TnThe present timing time of n-th of source node of ' expression；TbIndicate the present timing time of own node；tbn
Indicate that the timing time of own node and n-th of source node is poor.
Third computing module be used for according to present timing time of own node calculated each source node it is current
Synchronization time is calculated in timing time.
Third computing module be specifically used for according to present timing time of own node calculated each source node
The present timing time, using formula:
Wherein, Tb' indicate synchronization time；TnThe present timing time of n-th of source node of ' expression；TbIndicate own node
Present timing time, k are the number of source node.
Sending module generates for the synchronization time arrived according to calculating and intersects broadcast message packet, to carry out intersection broadcast
The transmitting of packet.
Node time synchronizing device in the present embodiment eliminates the time without necessarily referring to synchronous step by step between node and node
Error will not influence the performance of network entirety when respective nodes death.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of method for synchronizing time characterized by comprising
The intersection broadcast message packet that each source node is sent is received, and records the time for receiving and intersecting broadcast message packet；Wherein,
The broadcast message packet that intersects includes: the generation time for intersecting broadcast message packet；
The generation time of the intersection broadcast message packet sent according to each source node for receiving, recorded receive friendship
The reception delay of the time of broadcast message packet and the transmission delay of source node and own node are pitched, own node and each is calculated
The timing time of a source node is poor；
According to the present timing time of own node and calculated own node and each source node timing time it is poor, meter
Calculate the present timing time of each source node；
According to the present timing time of own node calculated each source node the present timing time, synchronization is calculated
Time；
It is generated according to the synchronization time of calculating arrived and intersects broadcast message packet, to carry out intersecting the transmitting of broadcast message packet.
2. method for synchronizing time according to claim 1, which is characterized in that the intersection for receiving each source node and sending
Broadcast message packet, and record the step of receiving the time for intersecting broadcast message packet and include:
Receive the intersection broadcast message packet of each source node；
The data information for intersecting broadcast message packet based on the received, judges whether the intersection broadcast message packet is to be connect for the first time
It receives, if then record receives the time of the intersection broadcast message.
3. method for synchronizing time according to claim 1, which is characterized in that each source node hair that the basis receives
The generation time of the intersection broadcast message packet sent, the time for receiving intersection broadcast message packet recorded and source section
The transmission delay of point and the reception delay of own node, calculate the step packet of the timing time difference of own node and each source node
It includes:
The generation time of the intersection broadcast message packet sent according to each source node for receiving, recorded receive friendship
The transmission delay of time and source node that fork broadcast message includes and the reception delay of own node, using formula:
tbn=(Tn+α+β)-Tbn, calculate the present timing time of each source node；
Wherein, tbnIndicate that the timing time of own node and n-th of source node is poor；TnIndicate that n-th of source node is sent described
Intersect the generation time of broadcast message packet；α indicates the transmission delay of n-th of source node；The reception delay of β expression own node；
TbnIndicate the time for the intersections broadcast message packet that n-th of sending node of receiving of being recorded of own node is sent, n for greater than
Integer equal to 1.
4. method for synchronizing time according to claim 1, which is characterized in that when the present timing according to own node
Between and calculated own node and each source node timing time it is poor, calculate the present timing time of each source node
The step of include:
According to the present timing time of own node and calculated own node and each source node timing time it is poor, adopt
With formula:
Tn'=Tb+tbn, calculate the present timing time of each source node；
Wherein, TnThe present timing time of n-th of source node of ' expression；TbIndicate the present timing time of own node；tbnIt indicates
The timing time of own node and n-th of source node is poor.
5. method for synchronizing time according to claim 1, which is characterized in that when the present timing according to own node
Between calculated each source node the present timing time, the step of synchronization time is calculated includes:
According to the present timing time of own node calculated each source node the present timing time, using formula:
Wherein, Tb' indicate synchronization time；TnThe present timing time of n-th of source node of ' expression；TbIndicate the current of own node
Timing time, k are the number of source node.
6. a kind of time synchronism apparatus characterized by comprising
Receiving module, the intersection broadcast message packet sent for receiving each source node, and record and receive intersection broadcast message
The time of packet；Wherein, the broadcast message packet that intersects includes: the generation time for intersecting broadcast message packet；
First computing module, when the generation of the intersection broadcast message packet for being sent according to each source node for receiving
Between, recorded receive intersect broadcast message packet time and source node transmission delay and own node reception when
Prolong, the timing time for calculating own node and each source node is poor；
Second computing module, for being saved according to present timing time and the institute calculated own node of own node and each source
The timing time of point is poor, calculates the present timing time of each source node；
Third computing module, for the present timing time according to own node calculated each source node present timing
Synchronization time is calculated in time；
Sending module generates for the synchronization time arrived according to calculating and intersects broadcast message packet, to carry out intersection broadcast message
The transmitting of packet.
7. time synchronism apparatus according to claim 6, which is characterized in that the receiving module is specifically used for receiving each
The intersection broadcast message packet of a source node；The data information for intersecting broadcast message packet based on the received, judges that the intersection is wide
Broadcast whether packet is to be received for the first time, if then record receives the time of the intersection broadcast message.
8. time synchronism apparatus according to claim 6, which is characterized in that first computing module is specifically used for root
The generation time of the intersection broadcast message packet sent according to each source node received, the intersection that receives recorded are broadcasted
The transmission delay of time and source node that information includes and the reception delay of own node, using formula:
tbn=(Tn+α+β)-Tbn, calculate the present timing time of each source node；
Wherein, tbnIndicate that the timing time of own node and n-th of source node is poor；TnIndicate that n-th of source node is sent described
Intersect the generation time of broadcast message packet；α indicates the transmission delay of n-th of source node；The reception delay of β expression own node；
TbnIndicate the time for the intersections broadcast message packet that n-th of sending node of receiving of being recorded of own node is sent, n for greater than
Integer equal to 1.
9. time synchronism apparatus according to claim 6, which is characterized in that second computing module is specifically used for root
According to own node the present timing time and calculated own node and each source node timing time it is poor, using public affairs
Formula:
Tn'=Tb+tbn, calculate the present timing time of each source node；
Wherein, TnThe present timing time of n-th of source node of ' expression；TbIndicate the present timing time of own node；tbnIt indicates
The timing time of own node and n-th of source node is poor.
10. time synchronism apparatus according to claim 6, which is characterized in that the third computing module is specifically used for root
According to own node the present timing time calculated each source node the present timing time, using formula:
Wherein, Tb' indicate synchronization time；TnThe present timing time of n-th of source node of ' expression；TbIndicate the current of own node
Timing time, k are the number of source node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910163865.2A CN109660959B (en) | 2019-03-05 | 2019-03-05 | Time synchronization method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910163865.2A CN109660959B (en) | 2019-03-05 | 2019-03-05 | Time synchronization method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109660959A true CN109660959A (en) | 2019-04-19 |
| CN109660959B CN109660959B (en) | 2021-07-06 |
Family
ID=66123904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910163865.2A Active CN109660959B (en) | 2019-03-05 | 2019-03-05 | Time synchronization method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109660959B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060083264A1 (en) * | 2004-10-14 | 2006-04-20 | Jordan Patrick D | System and method for time synchronizing nodes in an automotive network using input capture |
| CN101247168A (en) * | 2007-02-15 | 2008-08-20 | 华为技术有限公司 | Time synchronization method and system |
| US20080240075A1 (en) * | 2007-03-26 | 2008-10-02 | Yokogawa Electric Corporation | Time synchronization system |
| CN101400018A (en) * | 2007-09-30 | 2009-04-01 | 中兴通讯股份有限公司 | Broadcast data synchronization layer implementing method |
| CN101588628A (en) * | 2009-06-19 | 2009-11-25 | 山东省计算中心 | Clock synchronizing method for wireless sensor network |
| CN105282840A (en) * | 2014-07-24 | 2016-01-27 | 北京信威通信技术股份有限公司 | Method for time synchronization between nodes in wireless Ad Hoc network |
| CN105680976A (en) * | 2016-03-29 | 2016-06-15 | 中国电子科技集团公司第二十九研究所 | Distributed network time synchronization method |
| CN107995681A (en) * | 2017-11-16 | 2018-05-04 | 全球能源互联网研究院有限公司 | A kind of wireless sense network method for synchronizing time and device |
-
2019
- 2019-03-05 CN CN201910163865.2A patent/CN109660959B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060083264A1 (en) * | 2004-10-14 | 2006-04-20 | Jordan Patrick D | System and method for time synchronizing nodes in an automotive network using input capture |
| CN101247168A (en) * | 2007-02-15 | 2008-08-20 | 华为技术有限公司 | Time synchronization method and system |
| US20080240075A1 (en) * | 2007-03-26 | 2008-10-02 | Yokogawa Electric Corporation | Time synchronization system |
| CN101400018A (en) * | 2007-09-30 | 2009-04-01 | 中兴通讯股份有限公司 | Broadcast data synchronization layer implementing method |
| CN101588628A (en) * | 2009-06-19 | 2009-11-25 | 山东省计算中心 | Clock synchronizing method for wireless sensor network |
| CN105282840A (en) * | 2014-07-24 | 2016-01-27 | 北京信威通信技术股份有限公司 | Method for time synchronization between nodes in wireless Ad Hoc network |
| CN105680976A (en) * | 2016-03-29 | 2016-06-15 | 中国电子科技集团公司第二十九研究所 | Distributed network time synchronization method |
| CN107995681A (en) * | 2017-11-16 | 2018-05-04 | 全球能源互联网研究院有限公司 | A kind of wireless sense network method for synchronizing time and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109660959B (en) | 2021-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106488550B (en) | Determine the method and apparatus of terminal Yu base station clock time deviation | |
| US11038609B2 (en) | Sensing system and time synchronization method | |
| Serpedin et al. | Synchronization in wireless sensor networks: parameter estimation, performance benchmarks, and protocols | |
| CN102244603B (en) | Method, equipment and system for transmitting message bearing time | |
| Kim et al. | Energy-efficient time synchronization based on asynchronous source clock frequency recovery and reverse two-way message exchanges in wireless sensor networks | |
| KR20090006757A (en) | Time synchronization and routing method in wireless sensor network, and apparatus for enabling the method | |
| CN103929293A (en) | Asymmetrically-delayed time synchronization method and system | |
| CN103108388A (en) | Method, device and system of wireless sensor network clock synchronization | |
| Dian et al. | A study in accuracy of time synchronization of BLE devices using connection-based event | |
| US11503557B2 (en) | Time synchronization in integrated 5G wireless and time-sensitive networking systems | |
| Hu et al. | Algorithmic aspects of the time synchronization problem in large-scale sensor networks | |
| CN105188126A (en) | Distributed multi-hop wireless network clock synchronization method based on mean field | |
| CN102916758A (en) | Ethernet time synchronization device and network equipment | |
| CN106455042B (en) | A kind of time synchronization between nodes method, wireless sensor network and its node | |
| Jin et al. | Integrated time synchronization and multiple access protocol for underwater acoustic sensor networks | |
| Kiani et al. | Energy efficiency in wireless sensor and actor networks by distributed time sychnronization algorithm | |
| CN103491624B (en) | The method for synchronizing time of event time label in sensor network | |
| CN107197514A (en) | The cognizable global clock synchronous method of wireless sensor network and the application in multihop network | |
| CN109660959A (en) | Method for synchronizing time and device | |
| CN106604387A (en) | Wireless sensor time synchronization method based on game theory | |
| Xia et al. | COPESM-MAC: A contention-based medium access protocol using parallel reservation and sleep mode for underwater acoustic sensor networks | |
| JP2022044567A (en) | Method for data collection in wireless mesh network and devices for its implementation | |
| KR20120051632A (en) | Method for clock synchronization in distributed system having ring topology and apparatus for the same | |
| CN106507468B (en) | A kind of wireless sensor network time synchronization method and system | |
| Chaudhari et al. | Clock estimation for long-term synchronization in wireless sensor networks with exponential delays |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |