CN106714284A - Sequential sleep and wakeup method for wireless chain type topological network - Google Patents
Sequential sleep and wakeup method for wireless chain type topological network Download PDFInfo
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- CN106714284A CN106714284A CN201611082890.0A CN201611082890A CN106714284A CN 106714284 A CN106714284 A CN 106714284A CN 201611082890 A CN201611082890 A CN 201611082890A CN 106714284 A CN106714284 A CN 106714284A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a sequential sleep and wakeup method for a wireless chain type topological network. All nodes in a network sleep according to a chain type topological sequence and are woken up in sequence; and a sleep and wakeup time difference between each node and the adjacent node is equal to one-hop air interface one-way transmission delay. Therefore, first-packet delay of real-time services in a wireless multi-hop environment can be reduced to the greatest extent. Periodic sleep of all nodes in the network is carried out under the circumstance that the real-time performance of the broadband services is not affected, so that the power consumption of the system can be saved; and when a service exists, a chain can be woken up rapidly.
Description
Technical field
The present invention relates to a kind of link order dormancy suitable for wireless chain topology communication network and wake-up scheme, can use
In the multihop network of wireless chain topology, belong to wireless communication field.
Background technology
Wireless chain communication system is applied to communication zone in chain or the application scenarios of banded topology, and it has fast and flexible
The features such as networking, chain topology, chain is needed in frontier defense, coast defence, forest conservation, high voltage cable and oil pipeline monitoring etc.
There is the advantage of uniqueness in the application scenarios of covering, but in use above scene, remote geographic location, working environment is disliked
It is bad, often periodically cannot effectively supplement energy.Reducing energy consumption is a critically important problem, and low power dissipation design is to closing weight
Will.In traditional Low-power-consumptiodormancy dormancy design, the node of the whole network is in asynchronous sleep state, and this is largely degrading business
Time delay, cause many broadband real-time services to smoothly complete.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided one kind is applied to wireless chain topological network
The order dormancy awakening method of network, makes the whole network node by topological order dormancy, when there is business, can be and asynchronous with fast wake-up
The time required for reducing link wakeup is compared in dormancy, both ensure that the low power capabilities of node in turn ensure that wake-up the whole network section
The low delay of point.The technical solution adopted by the present invention is：
In the present invention, the dormancy period of node includes dormant stage and awakening phase two parts, and node is only in wake-up
Business packet could be received during stage.Node has four kinds of states：Working condition, resting state（Node is in the dormant stage stops
Dormancy state）, intercept state and from resting state.There is the abnormal situation of node wherein from resting state mark in link, be in
Periodic dormancy and can be waken up until link-recovery is normal from the node of resting state.
（One）, node dormancy method：
All nodes are all in state of intercepting, all node asynchronous when initial.In order to ensure that service delay is small, enable node fast
Speed is waken up and starts business transmission, it is necessary to allow node when without business by link topology order dormancy.
Link root node（First in link）During state is intercepted, initiate suitable according to certain trigger mechanism
Sequence dormancy flow, the mechanism can be that root node actively initiates dormancy flow after business is transmitted, and send dormancy instruction,
Can be that root node passively receives comprehensive management platform（The monitoring system at PC ends, is connected with root node）Dormancy instruction then send out
Go out.Actively initiate dormancy with root node below to be described, first, from root node to its forward direction（Root node is toward ordinary node side
To）Node periodically send carry dormancy bag dormancy instruction, in dormancy bag carry sleep time (fixed value), intercept duration,
Into dormancy moment, source node number, dormancy bag destination address（Broadcast packet address, i.e. each node receive dormancy bag will dormancy）
Etc. parameter, forward direction node enters the moment of dormancy, i.e. dormancy according to parameter setting this section point in dormancy bag when receiving dormancy instruction
Backward node in bag enters the dormancy moment plus adjacent node unidirectional transmission time delay（Adjacent node herein refers to and receives dormancy bag
This node and its backward node）, sleep time, intercept duration, then reply root node ACK bags（Response bag）, dormancy bag
The corresponding source node number of this node, destination node number, the abnormal conditions of forward direction node are included in ACK bags, if root node does not have
Then indicate preceding to node exception for the ACK bags of dormancy bag to node before receiving.Finally, this node adjacent with root node exists
Continue a down forward direction node hair dormancy bag after receiving dormancy bag, until all nodes have successfully received dormancy instruction in link.
Using this strategy, all nodes in link can be made to enter according to topological order in the case where clock frequency offset is little
Dormancy.
（Two）, before node to awakening method：
When there is business to initiate, it is necessary to wake source service node is to the chain between purpose service node before business data transmission
Road, wakeup process wakes up two kinds to wake-up before having with backward.
To wakeup process before introducing first.When there is the business datum from root node to certain purpose service node, now
To link process is waken up before being initiated from root node, root node periodically sends in awakening phase initial time to its forward direction node
Instruction, the parameter such as active node number, destination node number, Packet type in forward direction wake-up packet are waken up comprising the preceding forward direction to wake-up packet.
Forward direction node postbacks the preceding ACK bags to wake-up packet after being instructed to wake-up before receiving, if to node for preceding to wake-up packet before receiving
ACK bags（The abnormal information of main active node, destination node number and forward direction node in bag）, then root node stop send before to
Wake up instruction.If to wake-up packet time-out before hair（A re-transmission time can be set, more than re-transmission time）To wake-up packet before not receiving
ACK bags, show before to node exception.Forward direction node receives that this is preceding to that can leave periodicity resting state after wake-up packet, is in
Working condition.If purpose service node is not that this is preceding to node, this is preceding continue to be sent out to its next forward direction node to node before
To wake-up packet, process as previously shown, until wake up purpose service node.Dormancy principle in sequence, the entrance of forward direction node is stopped
The time of dormancy jumps the unidirectional transmission time delay time than backward node delay one, and the dormancy dutycycle of each node is identical, before institute
Enter the initial time of awakening phase than its backward late unidirectional transmission time delay of waking up nodes stage initial time to node, this
Sample can ensure that under normal circumstances first instruction in backward waking up nodes stage can be received just when forward direction node is waken up
Arrive.
If business occurs when between two intermediate nodes, it is necessary to be initiated to its forward direction purpose industry by the node near root node
The wake-up flow of business node, detailed process is ibid.
The whole network node is by chain topological order dormancy in the present invention.Assuming that the one-way transmission between two neighboring node
Time delay is T0, and it is T1 that the wake-up of individual node takes, and wherein T1 is much larger than T0.Waking up purpose service node n with root node 0 is
Example, in other dormancy mechanisms, because the dormancy time of each node is asynchronous, so positive to wake up the total time delays of node n most
A length of T=（n-1）* T0+n*T1, and time delay total in the present invention is about T=(n-1) * T0+T1, this arrives there is business
When, wake-up time delay is greatly reduced, improve the Consumer's Experience of real time business.
（Three）To awakening method after node：
When certain intermediate node of link has urgency traffic communication requirement with root node, the intermediate node is waken up, Ran Houyou
The intermediate node triggers backward wakeup process, to the rear backward wake-up that the backward wake-up packet of carrying is sent to node of the intermediate node
Instruction；The link between the node and root node of urgency traffic communication requirement is waken up, it is main in backward wake-up packet to include waking up section
Period and destination node（That is root node）Deng.Each backward node receive carry after to wake-up packet it is rear to wake up instruction when,
Mark is preceding normal to node and this section point is entered working condition, while to the preceding ACK that backward wake-up packet is directed to node reverts back
Bag, for the main abnormal information for including source node and destination node number and backward node in the ACK bags of backward wake-up packet
Have successfully received and backward wake up instruction Deng, expression.Then the backward node continues to send out wake-up packet backward to its next backward node,
Until the link between root node and service node is all waken up.
After node to awakening method compared with existing asynchronous sleep method, although wake up time delay without reducing, but can be right
The present invention serves a kind of supplementary function, that is, when there is the urgency traffic demand of intermediate node and root node, can wake up backward
Intermediate node is to the link between root node.
（Four）Node abnormality eliminating method：
When exception occurs in certain node device in link, the communication of link is obstructed, and abnormal nodes are asynchronous with normal node.Work as section
Point needs to ensure the dormancy awakening synchronism with neighbor node when recovering from abnormality；
When there are abnormal nodes in the link of wireless chain topological network, then the backward normal node of the abnormal nodes is by abnormal section
The abnormal information of point toward backward transmission, notifies root node link abnormal conditions node by node；
The forward direction normal node of the abnormal nodes enters from resting state, then instead of root node to this it is preceding to normal node before
To node periodically send carry dormancy bag dormancy instruction, to notify that forward link interior joint carries out dormancy, so make before to
The dormancy of forward link of abnormal nodes is in turn ensure that while link nodes lower power consumption sequentially, when abnormal nodes recover normal
When, forward direction node can again after awakening phase reception to the instruction such as dormancy, wake-ups of node, again can according to it is above-mentioned not
Dormancy flow and wake-up flow make link synchronization.
The order dormancy flow that the forward direction normal node of the abnormal nodes is initiated is identical with root node.
The advantage of the invention is that：The whole network node wakes up according to chain topological order dormancy, order, and each node is adjacent with it
Occupy the dormancy of node, wakeup time and differ a gap mouthful unidirectional transmission time delay.Therefore can shorten to greatest extent wireless many
The first packet time delay of real time business under jump environment.Whole net node is carried out periodically under the requirement for not influenceing broadband services real-time
Dormancy, to save system power dissipation, and when there is business, can be with fast wake-up link.
Brief description of the drawings
Fig. 1 is chain multi-hop topological network dormancy schematic diagram of the invention.
Fig. 2 is that chain multi-hop topological network of the invention wakes up schematic diagram.
Specific embodiment
With reference to specific drawings and Examples, the invention will be further described.
The present invention will be illustrated with chain topology, but be not limited thereto.Fig. 1 show chain multi-hop topological network and stops
Dormancy flow.Each node spacing is equal or of substantially equal in wireless chain topological network（Each node spacing difference is in the range of 10%）；
A root node 0 is there is in the wireless chain topological network.It is preceding to define the communication direction from root node to ordinary node
To the communication direction from ordinary node to root node is backward.For example, for node 2, node 1 is near network root
On the direction of node, the referred to as backward node of node 2；Node 3 is referred to as the forward direction node of node 2.
When business data transmission completion or root node intercept time-out, the whole network order dormancy, root section can be initiated by root node 0
Point periodically sends dormancy bag to its forward direction node 1, and dormancy moment, sleep time, source node number, dormancy bag are carried along into bag
Destination address（Broadcast packet address, i.e. each node receive dormancy bag will dormancy）Etc. parameter.By taking node 1 as an example, if node 1
The dormancy bag is then just not responding in processing data business when receiving the dormancy bag that root node 0 sends, otherwise into resting state, together
When mark root node 0 it is normal and reply ACK bags (major parameter active node number 1, destination node number 0 and forward direction node in ACK bags
Possible abnormal conditions), when node 0 sends out dormancy bag to node 1 every time, node 1 can be clearly told, also how long node 0
Into dormancy.For example, the unidirectional transmission time delay that node 0 will enter between dormancy, adjacent node after time t is T0, individual node
Time-consuming T1 is waken up, the re-transmission time of dormancy bag is T2.Node 0 sends out dormancy bag toward forward direction node 1, if node 0 does not have within the T2 times
ACK is received, then retransmits dormancy bag, now tell node 1, this node（Node 0）The also t-T2 times enter dormancy, node 1
Oneself can be adjusted after dormancy bag is received into time t-T2+T0, the sleep time of dormancy（Fixed value）, so setting make node
1 can enter dormancy than the delay T0 times of node 0, while node 1 is waken up than the delay T0 times of node 0, under normal circumstances, node
First instruction of 0 hair can just be received when node 1 is waken up, and finally, node 1 sends out dormancy bag to node 2, until all sections
Point dormancy.The like, using this strategy, the order in the case where clock skew is little of all nodes in link can be made
Dormancy.
Fig. 2 represents that chain multi-hop topological network wakes up flow.As shown in Fig. 2 by taking forward direction wake-up as an example, on the needs of node 2
, it is necessary to wake up the link from root node 0 to node 2, first, root node 0 is opened in awakening phase initial time during biography business information
Begin to be sent to node 1 and instructed comprising the preceding wake-up to wake-up packet, forward direction wake-up packet includes source node number and destination node number.Section
After point 1 receives wake-up instruction, mark its backward node 0 normal, node 1 enters working condition, while can be to 0 loopback of node one
The message being waken up（ACK）, node 1 continue to node 2 hair wake up instruction, the like, until the purpose service node 2 of business
It is waken up with the link between root node 0.
When certain node and root node 0 have urgency traffic communication requirement, it is necessary to wake up the intermediate node between root node 0
Link.By taking node 2 as an example, after node 2 is waken up by hardware I/O interface, initiated to find to wake up by node 2, first check for node 1
Whether normal, if node 1 is in from resting state, node 2 ignores the wake command.To node 1 if node 1 is normal
Hair carries the backward wake-up instruction of backward wake-up packet, wakes up node 1 and enters working condition, and node 1 replys pin toward forward direction to node 2
To the ACK bags of backward wake-up packet, then node 1 continue toward it is backward periodically send out it is backward wake up instruction, until service node 2 with
Link between root node 0 is all waken up, and carries out business transmission.Node 2 is preceding to node toward node 3, node 4... etc. simultaneously
Hair dormancy bag, makes it keep synchronous.
Claims (6)
1. a kind of order dormancy awakening method suitable for wireless chain topological network, it is characterised in that including：
The dormancy period of wireless chain topological network interior joint includes dormant stage and awakening phase two parts, is opened up in wireless chain
The node rushed the net in network includes following state：Working condition, resting state, intercept state；Node is in dormancy in the dormant stage
State；
（One）, node dormancy method：All nodes are all in intercepting state when initial,
Link root node during state is intercepted, according to trigger mechanism initiation order dormancy flow, first, from root node to before it
To node periodically send carry dormancy bag dormancy instruction, in dormancy bag carry sleep time, intercept duration, when dormancy
Quarter, source node number, dormancy bag destination address parameter, according to parameter setting this section in dormancy bag when forward direction node receives dormancy instruction
Point enter dormancy moment, i.e., the backward node in dormancy bag enter the dormancy moment plus adjacent node unidirectional transmission time delay, stop
Dormancy duration, intercept duration, then reply root node ACK bags, included in the ACK bags of dormancy bag the corresponding source node number of this node,
The abnormal conditions of destination node number, forward direction node, if the ACK bags of dormancy bag are directed to before root node is not received to node,
To node exception before mark；Finally, this node adjacent with root node continues a down forward direction node after dormancy bag is received
Hair dormancy bag, until all nodes have successfully received dormancy instruction in link；
Above-mentioned adjacent node refers to this node and its backward node for receiving dormancy bag；
（Two）, before node to awakening method：
Source service node periodically sends to its forward direction node in awakening phase initial time and includes the preceding forward direction to wake-up packet
Wake-up instruction, forward direction node postbacks the preceding ACK bags to wake-up packet after being instructed to wake-up before receiving, if to node for preceding before receiving
To the ACK bags of wake-up packet, then to wake-up instruction before source service node stops sending；If hair before to wake-up packet time-out do not receive before to
The ACK bags of wake-up packet, to node exception before showing；It is preceding to can leave periodicity dormancy shape after wake-up packet that forward direction node receives this
State, it is in running order；If purpose service node is not that this is preceding to node, this is preceding to continue to its next forward direction section to node
To wake-up packet before point hair, until waking up purpose service node.
2. as claimed in claim 1 suitable for the order dormancy awakening method of wireless chain topological network, it is characterised in that
Also include（Three）To awakening method after node：
When certain intermediate node of link has urgency traffic communication requirement with root node, the intermediate node is waken up, Ran Houyou
The intermediate node triggers backward wakeup process, to the rear backward wake-up that the backward wake-up packet of carrying is sent to node of the intermediate node
Instruction；Wake up urgency traffic communication requirement node and root node between link, each backward node receive carry after to
When the backward wake-up of wake-up packet is instructed, mark is preceding normal to node and this section point is entered working condition, while to preceding to node
The ACK bags for backward wake-up packet are replied, expression has successfully received backward wake-up instruction；Then the backward node continues next to its
Individual backward node sends out wake-up packet backward, until the link between root node and service node is all waken up.
3. as claimed in claim 2 suitable for the order dormancy awakening method of wireless chain topological network, it is characterised in that
Also include（Four）Node abnormality eliminating method：
When there are abnormal nodes in the link of wireless chain topological network, then the backward normal node of the abnormal nodes is by abnormal section
The abnormal information of point toward backward transmission, notifies root node link abnormal conditions node by node；
The forward direction normal node of the abnormal nodes enters from resting state, then instead of root node to this it is preceding to normal node before
The dormancy instruction for carrying dormancy bag is periodically sent to node, to notify that forward link interior joint carries out dormancy；The abnormal nodes
Forward direction normal node initiate order dormancy flow it is identical with root node.
4. the order dormancy awakening method suitable for wireless chain topological network as described in claim 1,2 or 3, its feature exists
In,
It is described（One）In node dormancy method, link root node during state is intercepted, according to trigger mechanism initiation order dormancy
Flow；
The trigger mechanism actively initiates dormancy flow for root node is after business is transmitted or root node intercepts time-out, sends
Dormancy instruction；Or root node passively receives the dormancy instruction of comprehensive management platform and then sends.
5. the order dormancy awakening method suitable for wireless chain topological network as described in claim 1,2 or 3, its feature exists
In,
The sleep time is fixed value.
6. the order dormancy awakening method suitable for wireless chain topological network as described in claim 1,2 or 3, its feature exists
In,
Each node spacing is equal or each node spacing difference is in the range of 10% in wireless chain topological network.
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| CN114554581A (en) * | 2022-02-21 | 2022-05-27 | 营口天成消防设备有限公司 | Method for realizing networking communication of low-power-consumption wireless equipment for fire fighting |
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| CN114554581A (en) * | 2022-02-21 | 2022-05-27 | 营口天成消防设备有限公司 | Method for realizing networking communication of low-power-consumption wireless equipment for fire fighting |
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| CN106714284B (en) | 2020-05-05 |
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