CN107637134B - Wireless communication device and wireless communications method - Google Patents
Wireless communication device and wireless communications method Download PDFInfo
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- CN107637134B CN107637134B CN201580080535.7A CN201580080535A CN107637134B CN 107637134 B CN107637134 B CN 107637134B CN 201580080535 A CN201580080535 A CN 201580080535A CN 107637134 B CN107637134 B CN 107637134B
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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
- H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/005—Routing actions in the presence of nodes in sleep or doze mode
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/28—Connectivity information management, e.g. connectivity discovery or connectivity update for reactive routing
-
- 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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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
Starting and suspend mode is repeated in the wireless communication device for constituting the multihop network of tree structure, wherein, the wireless communication device has: network-control portion, keeps the information that the link of data is sent to other wireless communication devices, and generate the link control message comprising link information；And wireless transmission receiving unit, it is when receiving following request of data from the adjacent wireless communication device in other wireless communication devices, the link control message that network-control portion generates is sent to adjacent wireless communication device, the request of data shows the transmission of the case where adjacent wireless communication device is started since suspend mode and request data, therefore, even if can be also updated to communication link in the case where the wireless communication device for constituting multihop network is carrying out tapping mode.
Description
Technical field
The present invention relates to constitute multihop network and carry out tapping mode wireless communication device transmission link information skill
Art.
Background technique
For the cost effective of wireless module and with the bandspreading without authorization of frequency recombination, wireless M2M
(Machine-to-Machine, machine-to-machine) systematic difference is extending.Wireless M2M system is by wireless communication in equipment
Between send and receive monitoring information and/or control data system.In wireless M2M system, due to will with configuration extensive
Equipment in region is communicated, and therefore, the extension of communication distance is listed in one of project.In addition, it is also assumed that being unable to ensure
The case where radio node is arranged in the environment of power supply, therefore, radio node is also using the low power consumption that battery works long hours
One project.
As the technology for extending communication distance, there is multi-hop communication technology as follows: sending source node and target
Relay node is configured between addressed nodes, is received using relay node from the data for sending source node and sending, then from relay node
It is sent to destination address node.By applying multi-hop communication technology, without extending the communication distance of Radio Link, it will be able to
Extend the communication distance sent between source node and destination address node.As one of multi-hop communication technology, have by ietf standard
(IPv6Routing Protocol for Low Power and Lossy Networks is suitable for low-power consumption to RPL after change
With the IPv6 Routing Protocol of lossy networks) (referring to following non-patent literatures 1).
RPL carries out the update of communication link by regularly replacing control message.In wireless communications, due to electric wave
Situation at every moment changes, and therefore, regularly link update is essential.Each node constructs one using gateway as root
Tree structure multihop network.In the presence of from this node towards gateway direction link (hereinafter referred to as uplink) and from
Gateway is utilized respectively means below and is updated to link towards the link (hereinafter referred to as downlink) of this node direction.
Firstly, the update to uplink is illustrated.
Up-link information is set as uplink control message by gateway, is regularly sent with broadcast mode.It connects
The up-link information that the node of uplink control message keeps this node is received to be updated, and will be updated on
Downlink message is set as uplink control message, is sent with broadcast mode.
Fig. 9 is to show the timing diagram for updating uplink.There are node A~C in Fig. 9.Node A is adjacent with node B, is section
The next node of point B and node C.Node B is the next node adjacent with node C.
The up-link information that the node C of uplink control message keeps this node is received to be updated, and
Updated up-link information is set as uplink control message, (S901) is sent with broadcast mode.Node B connects
The uplink control message from node C is received, (S902) is updated to up-link information.Node B is by updated
The up-link information of node is set as uplink control message, and is sent (S903) with broadcast mode.Node A is received
Uplink control message from node B is updated (S904) to up-link information.
Next, the update to downlink is illustrated.
Figure 10 is to show the timing diagram for updating downlink.There are node A~C in Figure 10.Node A~C is regularly with list
Broadcast mode sends downlink control messages to adjacent host node.
Node A sends downlink control messages (S1001) to node B with mode of unicast.Receive downlink control
The node B of message is updated (S1002) to downlink information.In addition, node B is by the downlink control of updated content
Message processed is sent to node C (S1003).The node C for receiving downlink control messages is updated downlink information
(S1004)。
On the other hand, as the technology for realizing low-power consumption, there are the tapping modes that starting and suspend mode is repeated in node.Example
Such as, in IEEE802.15.4e, as the mode of tapping mode, RIT (Receiver Initiated Transmission,
Recipient starts transmission) it has been standardized (referring to following non-patent literatures 2).
Figure 11 is to show the timing diagram based on the RIT tapping mode carried out.There are node A, B in Figure 11.Node A, B are each other
It is adjacent, it is the node for constituting multihop network.Starting and suspend mode is repeated in node A, B.Node B grasped in advance node A be into
The case where node of row tapping mode.
Even if node B receives the data for issuing node A from other nodes, also (S1101) is not forwarded immediately.Node A rises
When dynamic, the node B of Xiang Xianglin sends the request of data (S1102) that request sends data.Node B receives data from node A and asks
When asking, the data (S1103) of node A are issued.Node A receives data, treats as to enter suspend mode due to intermittent periods it
Timing when carry out suspend mode.
Citation
Non-patent literature
Non-patent literature 1:IETF RFC6550, " IPv6Routing Protocol for Low-Power and
Lossy Networks”
Non-patent literature 2:IEEE Std 802.15.4e-2012
Summary of the invention
Subject to be solved by the invention
However, in update mode and non-patent literature 2 by non-patent literature 1 based on the RPL communication link realized
In the case where being combined based on the RIT tapping mode realized, when node dormancy, exists not receiving and sent with broadcast mode
Link control message to can not carry out link information update the problem of.
The present invention is completed to solve the problems, such as described above, it is therefore intended that is constituting multihop network even if obtaining
Node carrying out the wireless communication device for also capableing of more new communication link in the case where tapping mode.
Means for solving the problems
Wireless communication device constitutes the multihop network of tree structure and starting and suspend mode is repeated, wherein the channel radio
T unit has: network-control portion, keeps the information that the link of data is sent to other wireless communication devices, and generate and include
The link control message of the information of link；With wireless transmission receiving unit, from the adjacent nothing in other wireless communication devices
When line communication device receives following request of data, the link control message that the portion of being network controlled generates is sent to adjacent
Wireless communication device, the request of data show the case where adjacent wireless communication device is started since suspend mode and request
The transmission of data.
Invention effect
It according to the present invention, also can be right even if in the case where the node for constituting multihop network is carrying out tapping mode
Communication link is updated.
Detailed description of the invention
Fig. 1 is the block diagram for showing the structure of network of embodiment 1.
Fig. 2 is the block diagram for showing the structure of node of embodiment 1.
Fig. 3 is the flow chart for showing the process of reception processing of the node of embodiment 1.
Fig. 4 is the flow chart for showing the process of transmission processing of the node of embodiment 1.
Fig. 5 is the timing diagram for showing the uplink of more new node of embodiment 1.
Fig. 6 is the timing diagram for showing the downlink of more new node of embodiment 1.
Fig. 7 is the block diagram for showing an example of the hardware configuration of node of embodiment 1.
Fig. 8 is the flow chart for showing the processing of network-control portion update link of embodiment 2.
Fig. 9 is to show the timing diagram for updating uplink.
Figure 10 is to show the timing diagram for updating downlink.
Figure 11 is to show the timing diagram based on the RIT tapping mode realized.
Specific embodiment
Embodiment 1.
Firstly, being illustrated to network structure of the invention.
Fig. 1 is the figure for showing the structure of network of embodiment 1.Network is by the node 10a as wireless communication device
The multihop network that~c and gateway 11 are constituted.In addition, the network of Fig. 1 is the network with gateway 11 for the tree structure of root.Gateway 11
It constructs network and is managed, directly send and receive data with node or via other nodes and node.In addition, gateway
11 and be connected to gateway 11 upper device and/or other networks between send and receive data.
It is uplink from node towards the direction of gateway 11, is downlink from gateway 11 towards the direction of node.In Fig. 1, structure
Build the link being connect from gateway 11 via other nodes with node 10a, node 10b, node 10c.Node 10a is node
The next node of 10b and node 10c.Node 10b is both the next node of node 10c and the host node of node 10a.Section
Point 10c is the host node of node 10a and node 10b.In addition, node 10a~c carries out tapping mode.
Next, being illustrated to the structure of node 10.Node 10a~c is structure identical with node 10.
Fig. 2 is the block diagram for showing the structure of node 10 of embodiment 1.
Node 10 by antenna 21, wireless transmission receiving unit 22, using data transmission and reception unit 23, network-control portion 24 and
Control unit 25 of having a rest is constituted.In addition, network-control portion 24 is made of uplink management department 26 and downlink management department 27.This
Outside, tapping mode portion 25 is made of node administration portion 28 and starting management department 29.Sometimes node 10 is connected with sensor, using number
The data transmission and reception between sensor are carried out according to transmission and reception unit 23.
Firstly, the case where receiving data to node 10 is illustrated.
Wireless signal is exported when receiving wireless signal from other nodes and gives wireless transmission receiving unit 22 by antenna 21.
Wireless signal is converted to frame by wireless transmission receiving unit 22, is confirmed to the destination address of frame.In frame, as target
Location, be set with network address and MAC Address both.Network address is the destination address for the data that frame is sent.MAC Address is to show
The destination address of the next node of the chain road of multihop network out.As long as network address and MAC Address can uniquely be known
The value of other node.In addition, also in the same manner as destination address, transmission source network address is set in frame for transmission source
With transmission source MAC.
Receiving unit 22 is transmitted wirelessly according to the content of the frame data to be sent, Xiang Yingyong data transmission and reception unit 23 or network
Control unit 24 is exported.Using data transmission and reception unit 23 to from being carried out from the application data that wireless transmission receiving unit 22 inputs
Reason.When having input link control message from wireless transmission receiving unit 22, network-control portion 24 is updated link information.
Uplink management department 26 by the MAC Address of host node, class information, next node MAC Address and chain
The term of validity of road information, which is mapped, to be kept.Class information refer to indicate gateway 11 to node distance value.Distance
Such as it is indicated with hop count.Hop count be until the node of destination address via node number.Next node is
The next node of chain road when issuing the data of host node, is the node adjacent with node 10.Uplink pipe
Reason portion 26 saves MAC Address of the transmission source MAC of uplink control message as next node.Host node
The term of validity of MAC Address, class information and link information is the value notified by uplink control message.
In addition, downlink management department 27 by the MAC Address of the next node, class information, next node MAC Address
It is mapped and is kept with the term of validity of link information.Next node is chain when issuing the data of the next node
The next node of road is the node adjacent with node 10.Downlink management department 27 saves downlink control messages
Send MAC Address of the source MAC as next node.The MAC Address of the next node, class information and link information have
The effect time limit is the value notified by downlink control messages.
Uplink management department 26 and downlink management department 27 maintain the link information of multiple nodes sometimes.
Node administration portion 28 by the MAC Address of adjacent node and each node whether carrying out tapping mode be mapped into
Row is kept.When network is added in node, by the MAC Address of this node and the node that tapping mode is sent to surrounding whether is carried out.
Node administration portion 28 will appreciate that whether adjacent node is carrying out tapping mode according to information at this moment.
In addition, starting the resting period that management department 29 keeps this node.
Next, the case where sending data to node 10 is illustrated.
It is using data transmission and reception unit 23 that the sensor connecting with node 10 and/or application application data generated is defeated
Wireless transmission receiving unit 22 is given out.Network-control portion 24 is and attached referring to uplink management department 26 or downlink management department 27
Add the information of this node and generates link control message.MAC Address, class information of the uplink control message by host node
It is constituted with the term of validity of link.Network-control portion 24 sets the MAC Address of this node in the MAC Address of host node, makees
For the link information of this node.Network-control portion 24 maintains the class information of this node and the term of validity of link, and to upper
Downlink control message sets kept value.Network-control portion 24 is by uplink control message generated and next section
The MAC Address of point, which exports, gives wireless transmission receiving unit 22.
Downlink control messages are made of the term of validity of the MAC Address of the next node, class information and link.Network
Control unit 24 sets the MAC Address of this node in the MAC Address of the next node, the link information as this node.Network control
Portion 24 processed maintains the class information of this node and the term of validity of link, and downlink control messages setting is kept
Value.Network-control portion 24 exports the MAC Address of downlink control messages generated and next node to wireless transmission
Receiving unit 22.
Wireless transmission receiving unit 22 inquires whether next node is carrying out tapping mode to node administration portion 28.Under
In the case that one node is carrying out tapping mode, wireless transmission receiving unit 22, which is worked as from next node, receives request of data
When, next node is sent to by link control message and using data via antenna 21.Between next node does not carry out
Have a rest in the case where control, wireless transmission receiving unit 22 be not to wait for the reception of request of data and by link control message and using data
It is sent to next node.
Next, being illustrated to the details for the movement that node 10 receives data from other nodes.
Fig. 3 is the flow chart for showing the process of reception processing of the node 10 of embodiment 1.
Receiving unit 22 is transmitted wirelessly when receiving wireless signal from antenna 21, is started to process from step S301.
In step S301, whether wireless transmission receiving unit 22 is to issue this section point to sentence to the frame data to be sent
It is fixed.In the case where the destination network addresses of frame are this nodes, processing is made to advance to step S302.
In step s 302, whether wireless transmission receiving unit 22 is to determine using data to the frame data to be sent.
In the case where the data that frame to be sent are using data, wireless transmission receiving unit 22 will be exported using data and be sent out to using data
Send receiving unit 23.
In step S303, the application data inputted using 23 Duis of data transmission and reception unit are handled.Using data
Data output is also further given the sensor of this node connection by transmission and reception unit 23 sometimes.Processing terminate.
In step s 302, in the case where the frame data to be sent are not using data, processing advances to step S304.
In step s 304, in the case where the data that frame to be sent are link control messages, receiving unit 22 is transmitted wirelessly
Link control message is exported to network-control portion 24.
In step S305, network-control portion 24 is updated link information.It is being link relevant to uplink
In the case where control message, link information is stored in uplink management department 26 by network-control portion 24.It is being and downlink chain
In the case where the relevant link control message in road, link information is stored in downlink management department 26 by network-control portion 24.
Processing terminate.
In step s 304, in the case where the frame data to be sent are not link control messages, receiving unit is transmitted wirelessly
22 carry out processing corresponding with the content of message, and processing terminate.
In step S301, in the case where the destination network addresses of frame are not this nodes, processing is made to advance to step
S306.This is the case where forwarding a frame to other nodes.
In step S306, in the case where the destination-mac address of frame is this node, processing is made to advance to step S307.
In step S307, wireless transmission receiving unit 22 gives the data forwarding received from other nodes to next section
Point.The details of processing repeats after holding.
In step S306, in the case where the destination-mac address of frame is not this node, step S308 is advanced to.
In step S308, wireless transmission receiving unit 22 abandons frame.Processing terminate.
Next, being illustrated to the details for the movement that node 10 sends data to other nodes.
Fig. 4 is the flow chart for showing the process of transmission processing of the node 10 of embodiment 1.Node 10 sends the number generated
According to the case where and forwarding from the data that other nodes receive the case where, carry out the processing of this flow chart.It forwards from other
The case where data that node receives is the step S307 of Fig. 3.
It is utilized using data transmission and reception unit 23 corresponding with the input from sensor and/or the application data received
Processing will be sent to other nodes using data.It will be defeated using data and destination network addresses using data transmission and reception unit 23
Wireless transmission receiving unit 22 is given out.
Wireless transmission receiving unit 22 is when being entered the data by sending using data transmission and reception unit 23, from step S401
It starts to process.
In step S401, wireless transmission receiving unit 22 exports destination network addresses to network-control portion 24, and inquiry
Next node.Network-control portion 24 exports the MAC Address of next node corresponding with destination network addresses to wireless hair
Send receiving unit 22.Wireless transmission receiving unit 22 will be set as frame from the destination network addresses inputted using data transmission and reception unit 23
Destination network addresses.In addition, transmitting wirelessly receiving unit 22 for the MAC Address of the next node inputted from network-control portion 24
It is set as the destination-mac address of frame.
In step S402, wireless transmission receiving unit 22 exports the MAC Address of next node to tapping mode portion 25,
And whether inquiry next node is carrying out tapping mode.Tapping mode portion 25 is referring to node administration portion 28, by next section
Whether point exports in tapping mode is given wireless transmission receiving unit 22.The situation in tapping mode is in next node
Under, so that processing is advanced to step S403.In addition, making processing advance in the case where next node is not in tapping mode
To step S404.
In step S403, when wireless transmission receiving unit 22 receives request of data from next node or keeps hair
When sending the timer expired of data, processing is made to advance to step S404.
In step s 404, wireless transmission receiving unit 22 exports the transmission source MAC of request of data to network-control
Portion 24.In the case where the transmission source node of request of data is the node of uplink, network-control portion 24 generates uplink
Wireless transmission receiving unit 22 is given in control message and output.The data portion that receiving unit 22 is transmitted wirelessly in frame sets uplink control
Message processed, converts the frames into wireless signal.It transmits wirelessly receiving unit 22 and transmits radio signals to next section via antenna 21
Point.
In the case where the transmission source node of request of data is the node of downlink, network-control portion 24 generates downlink chain
Wireless transmission receiving unit 22 is given in road control message and output.Transmit wirelessly receiving unit 22 it is same as uplink control message
Ground is sent to next node.Processing advances to step S405.
In step S405, wireless transmission receiving unit 22 with setting the MAC of next node in the destination-mac address of frame
Location, and data are applied in the setting of the data portion of frame.In addition, wireless transmission receiving unit 22 converts the frames into wireless signal and exports
To antenna 21.Antenna 21 transmits radio signals to next node.Processing terminate.
In addition, wireless transmission receiving unit 22 is when receiving request of data from adjacent node, oriented this is adjacent not keeping
In the case where the application data that node is sent, only transmission link control message.At this moment, wireless transmission receiving unit 22 can also sent out
Send added in the frame of link control message indicate not maintain to be sent using data the case where information and to adjacent node
It is sent.
Next, being illustrated to the movement for updating uplink.In addition, to simplify the explanation, based on device name
Movement is illustrated.
Fig. 5 is the timing diagram for showing the uplink of more new node 10b of embodiment 1.
Node 10b receives the data (S501) for issuing node 10a.The node administration portion 28 of node 10b to node 10a whether
Be carry out tapping mode node determined.Since node 10a carries out tapping mode, node 10b postpones to node 10a
The transmission (S502) of progress.Node 10a sends request of data when end suspend mode starts.Node 10b is received from node
When the request of data of 10a, to 26 inquiry node 10a of uplink management department whether be uplink node (S503).If
Node 10a is the node of uplink, then node 10b sends uplink control message to node 10a with mode of unicast
(S504).Node 10a is updated up-link information according to the uplink control message received from node 10b
(S505).When node 10b receives when being sent to confirmation of uplink control message, the data once postponed are sent
(S506).Node 10a receives data, when becoming intermittent periods it, carries out suspend mode.
When receiving request of data from node 10a there is no the postponement data of node 10a are issued in the case where, node
10b can also express the case where there is no postponement data in uplink control message and be sent to node 10a.Pass through
Express in uplink control message there is no data are postponed, node 10a can be not to wait for data and go to suspend mode
State.Thus have the effect of reducing power consumption.
In addition, node 10b can also send the uplink control message for being sent to node 10a with broadcast mode.Pass through
Broadcast, the node of surrounding can also obtain the information of uplink and more new information.
Next, being illustrated to the movement for updating downlink.In addition, to simplify the explanation, based on device name
Movement is illustrated.
Fig. 6 is the timing diagram for showing the downlink of more new node 10b of embodiment 1.
Node 10b receives the data (S601) for issuing node 10c.The node administration portion 28 of node 10b to node 10c whether
Be carry out tapping mode node determined.Since node 10c carries out tapping mode, node 10b postpones to node 10c
The transmission (S602) of progress.Node 10c sends request of data when end suspend mode starts.Node 10b is received from node
When the request of data of 10c, to 27 inquiry node 10c of downlink management department whether be downlink node (S603).If
Node 10c is the node of downlink, then node 10b sends downlink control messages to node 10c with mode of unicast
(S604).Node 10c is updated downlink information according to the downlink control messages received from node 10b
(S605).When node 10b receives when being sent to confirmation of downlink control messages, the data once postponed are sent
(S606).Node 10c receives data, when becoming intermittent periods it, carries out suspend mode.
Next, being illustrated to the hardware configuration of node 10.
Fig. 7 is the block diagram for showing an example of the hardware configuration of node 10 of embodiment 1.
Node 10 is made of memory 71, processor 72 and wireless telecom equipment 73.Wireless telecom equipment 73 and antenna
21 connections.
Memory 71 is stored with for realizing wireless transmission receiving unit 22, using data transmission and reception unit 23, network-control
The program and data of each function in portion 24 and tapping mode portion 25.In addition, memory 71 is also stored with for realizing uplink
The data of each function of management department 26, downlink management department 27, node administration portion 28 and starting management department 29.Memory is for example
By ROM (Read Only Memory, read-only memory), RAM (Random Access Memory, random access memory),
HDD (Hard Disk Drive, hard disk drive), SSD (Solid State Drive, solid state hard disk) are constituted.
Processor 72 reads the program being stored in memory 71 and data and realizes wireless transmission receiving unit 22, using number
According to transmission and reception unit 23, network-control portion 24 and each function in tapping mode portion 25.Processor 72 is stored in storage by executing
The processing circuits such as CPU, the system LSI (Large Scale Integration, large scale integrated circuit) of the program in device come real
It is existing.
Alternatively, it is also possible to be configured to execute wireless transmission receiving unit 22 by the cooperation of multiple processing circuits, be sent out using data
Send the function of receiving unit 23, network-control portion 24 and tapping mode portion 25.
Wireless telecom equipment 73 and memory 71 and processor 72 realize the function of wireless transmission receiving unit 22 together.Nothing
Line communication equipment 73 is made of wireless transmission device and radio receiver, by between wireless mode and other devices send and
Receive wireless signal.
Therefore, in the present embodiment, starting is repeated in the wireless communication device for constituting the multihop network of tree structure
And suspend mode, the wireless communication device include network-control portion, keep the link that data are sent to other wireless communication devices
Information, and generate the link control message comprising link information；And wireless transmission receiving unit, it is filled from other wireless communications
When adjacent wireless communication device in setting receives following request of data, link control message that network-control portion is generated
It is sent to adjacent wireless communication device, wherein the request of data shows adjacent wireless communication device from suspend mode
Dynamic situation and request sends data, therefore, even if carrying out tapping mode in the wireless communication device for constituting multihop network
In the case where, communication link can be also updated.
Embodiment 2.
In above embodiment 1, to receive this case that request of data, to be opportunity send uplink control
Message or downlink control messages still in the present embodiment, show the term of validity in view of communication link and send
The embodiment of link control message.
In addition, in the present embodiment, being illustrated to the part different from embodiment 1.
Fig. 8 is the flow chart for showing the processing of the update of network-control portion 24 link information of embodiment 2.
Network-control portion 24 obtains the term of validity of uplink and the validity period of downlink from link control message
Limit, and be stored in uplink management department 26 and downlink management department 27 respectively.
Node 10 is started to process from step S801.
In step S801, network-control portion 24 starts uplink timer and downlink timer.Timer value
Start from scratch and counts up.
In step S802, wireless transmission receiving unit 22 receives request of data.Receiving unit 22 is transmitted wirelessly by request of data
The transmission source MAC of frame is exported to network-control portion 24.The case where the transmission source of request of data is the node of uplink
Under, advance to step S803.
In step S803, the value of uplink timer is compared by network-control portion 24 with threshold value.Work as uplink
When the value of road timer is not less than threshold value, step S804 is advanced to.When the value of uplink timer is less than threshold value, it is back to
Step S802.
In step S804, network-control portion 24, which generates uplink control message and exports, gives wireless transmission receiving unit
22.Wireless transmission receiving unit 22 sends uplink control message via antenna 21 with mode of unicast.
In step S805, network-control portion 24 makes the value of uplink timer reset and be set as zero.Processing returns to
To step S802.
In step S802, in the case where the transmission source of request of data is the node of downlink, step is advanced to
S806。
In step S806, the value of downlink timer is compared with threshold value.When the value of downlink timer
When not less than threshold value, step S807 is advanced to.When the value of downlink timer is less than threshold value, it is back to step S802.
In step S807, network-control portion 24, which generates downlink control messages and exports, gives wireless transmission receiving unit
22.Wireless transmission receiving unit 22 sends downlink control messages via antenna 21 with mode of unicast.
In step S808, network-control portion 24 makes the value of downlink timer reset and be set as zero.Processing returns to
To step S802.
The threshold value being compared with uplink timer and downlink timer is set to the interval control of this node
N times of the value in period processed.The tapping mode period is that time of suspend mode until starting again is carried out since starting node.n
For the integer more than or equal to 1.
By the way that threshold value to be set as to n times of the value in tapping mode period, thus until the term of validity of link is overtime, energy
Enough send n times uplink and downlink control messages.When setting n as 1, if the transmission failure one of link control message
It is secondary, then lead to the term of validity time-out of link, the update failure of link.On the other hand, when n being set to larger, link control
The transmission interval of message shortens, and increases so as to cause the portfolio of wireless network, and the power consumption of node increases.Therefore, by appropriate
Ground sets n, can reduce the failure of link update, additionally it is possible to which the power consumption of the portfolio increase and node that inhibit wireless network increases
Add.
Therefore, in the present embodiment, when network-control portion is to exporting link control message to wireless transmission receiving unit
That rises is counted by the time, and when receiving request of data from adjacent wireless communication device, elapsed time is less than threshold
When value, transmission link control message therefore, can be not right until the term of validity of link is overtime for wireless transmission receiving unit
Link is updated.
Label declaration
10,10a~c: node；
11: gateway；
21: antenna；
22: wireless transmission receiving unit；
23: applying data transmission and reception unit；
24: network-control portion；
25: tapping mode portion；
26: uplink management department；
27: downlink management department；
28: node administration portion；
29: starting management department；
71: memory；
72: processor；
73: wireless telecom equipment.
Claims (5)
1. a kind of wireless communication device, the wireless communication device constitute the multihop network of tree structure and be repeated starting and
Suspend mode, wherein the wireless communication device includes
Network-control portion keeps the information that the link of data is sent to other wireless communication devices, and generating includes the chain
The link control message of the information on road；And
Receiving unit is transmitted wirelessly, it is as follows being received from the adjacent wireless communication device in other wireless communication devices
Request of data when, the link control message generated by the network-control portion is sent to the adjacent wireless communication
Device, the request of data show the case where adjacent wireless communication device is started since suspend mode and request data
It sends.
2. wireless communication device according to claim 1, wherein
The wireless transmission receiving unit does not maintain when receiving the request of data from the adjacent wireless communication device
In the case where the data to send to the adjacent wireless communication device, transmission, which is attached with to show, is not present the data to be sent
Information the link control message.
3. wireless communication device according to claim 1 or 2, wherein
The network-control portion to from when the link control message is sent to the adjacent wireless communication device by
Time is counted,
When receiving the request of data again from the adjacent wireless communication device, the elapsed time is less than threshold value
When, the wireless transmission receiving unit does not retransmit the link control message.
4. wireless communication device according to claim 3, wherein
The wireless communication device has tapping mode portion, which is kept for the tapping mode period of the present apparatus, and
The tapping mode of the present apparatus is carried out,
The threshold value is set as n times of the value in the tapping mode period of the present apparatus by the network-control portion, wherein n is positive whole
Number.
5. a kind of wireless communications method, the wireless communications method are used to constitute the multihop network of tree structure, and have been repeated
Dynamic and suspend mode, wherein the wireless communications method includes:
Network-control step keeps the information that the link of data is sent to other wireless communication devices, and generating includes the chain
The link control message of the information on road；And
Receiving step is transmitted wirelessly, it is as follows being received from the adjacent wireless communication device in other wireless communication devices
Request of data when, the link control message generated by the network-control step is sent to described adjacent wireless
Communication device, the request of data show the case where adjacent wireless communication device is started since suspend mode and number of request
According to transmission.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/066229 WO2016194205A1 (en) | 2015-06-04 | 2015-06-04 | Wireless communication apparatus and wireless communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107637134A CN107637134A (en) | 2018-01-26 |
| CN107637134B true CN107637134B (en) | 2019-05-17 |
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| CN201580080535.7A Active CN107637134B (en) | 2015-06-04 | 2015-06-04 | Wireless communication device and wireless communications method |
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|---|---|
| JP (1) | JP6218993B2 (en) |
| CN (1) | CN107637134B (en) |
| DE (1) | DE112015006595B4 (en) |
| TW (1) | TWI586204B (en) |
| WO (1) | WO2016194205A1 (en) |
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| JP2018124774A (en) * | 2017-01-31 | 2018-08-09 | 東京瓦斯株式会社 | Wireless communication system |
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| JP5627816B2 (en) * | 2012-02-20 | 2014-11-19 | 三菱電機株式会社 | Communication system, communication terminal, and communication method |
| US8693322B2 (en) * | 2012-02-21 | 2014-04-08 | Yikun Zhang | Routing method for a wireless multi-hop network |
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| JP6236152B2 (en) * | 2013-07-12 | 2017-11-22 | コンヴィーダ ワイヤレス， エルエルシー | Neighbor discovery to support Sleepy Node |
-
2015
- 2015-06-04 CN CN201580080535.7A patent/CN107637134B/en active Active
- 2015-06-04 JP JP2017521456A patent/JP6218993B2/en active Active
- 2015-06-04 DE DE112015006595.4T patent/DE112015006595B4/en active Active
- 2015-06-04 WO PCT/JP2015/066229 patent/WO2016194205A1/en active Application Filing
- 2015-06-16 TW TW104119360A patent/TWI586204B/en not_active IP Right Cessation
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| WO2007020941A1 (en) * | 2005-08-18 | 2007-02-22 | Nec Corporation | Communication terminal and communication path control method in wireless multi-hop network |
| CN101039507A (en) * | 2006-03-14 | 2007-09-19 | 华为技术有限公司 | Method and apparatus for establishing and releasing tunnel in evolution network framework |
| CN101267240A (en) * | 2007-03-15 | 2008-09-17 | 华为技术有限公司 | Multi-hop wireless relay communication system and download data transmission method and device |
| JP2009302694A (en) * | 2008-06-11 | 2009-12-24 | Hitachi Ltd | Radio communication network system |
| CN104205993A (en) * | 2012-01-26 | 2014-12-10 | 松下电器（美国）知识产权公司 | Improved discontinuous reception operation with additional wake up opportunities |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112015006595T5 (en) | 2018-03-15 |
| JPWO2016194205A1 (en) | 2017-10-19 |
| DE112015006595B4 (en) | 2019-02-21 |
| TWI586204B (en) | 2017-06-01 |
| JP6218993B2 (en) | 2017-10-25 |
| TW201644314A (en) | 2016-12-16 |
| WO2016194205A1 (en) | 2016-12-08 |
| CN107637134A (en) | 2018-01-26 |
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