CN106921987B - Wireless communication method and device - Google Patents
Wireless communication method and device Download PDFInfo
- Publication number
- CN106921987B CN106921987B CN201710132154.XA CN201710132154A CN106921987B CN 106921987 B CN106921987 B CN 106921987B CN 201710132154 A CN201710132154 A CN 201710132154A CN 106921987 B CN106921987 B CN 106921987B
- Authority
- CN
- China
- Prior art keywords
- communication node
- time slot
- sub
- information
- data
- 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.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 514
- 230000006854 communication Effects 0.000 title claims abstract description 376
- 238000000034 method Methods 0.000 title claims abstract description 64
- 230000006855 networking Effects 0.000 claims description 118
- 230000004044 response Effects 0.000 claims description 37
- 238000012790 confirmation Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000003993 interaction Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a wireless communication method and a wireless communication device. The wireless communication method comprises the following steps: determining whether the current time slot is a legal time slot corresponding to the sub communication node of the current time slot; and if the current time slot is the legal time slot, transmitting the data to be transmitted to a main communication node when the data to be transmitted is determined to exist. By adopting the method, the existing wireless communication method can be optimized, and the problems of overlarge resource consumption and low data communication accuracy caused by a wireless channel collision arbitration principle are solved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a wireless communication method and apparatus.
Background
Industrial Scientific Medical bands (ISM bands) are defined by the radio communication bureau of the international telecommunication union for Industrial, Scientific, Medical bands that do not require licensed permission. The above frequency bands are typically used for communication between the fault indicators (acquisition units) of the distribution lines and their corresponding collection units. Generally, the acquisition Unit and the aggregation Unit communicate with each other by using a radio frequency chip with wireless data half-duplex transceiving function provided by chip manufacturers, ISM bands, in cooperation with an application Micro Control Unit (MCU).
When the acquisition unit communicates with the aggregation unit, a relatively simple wireless channel collision arbitration principle is generally adopted, and the wireless communication mode has strict requirements on reliability, accuracy, real-time performance, power consumption and the like. If a product (such as a distribution line fault indicator) adopting the wireless communication mode is used in a national power grid, the using quantity is large, the strength of a wireless signal needs to be detected before data is sent each time to determine whether a sending condition is met, if the sending condition is not met, the strength of the wireless signal needs to be detected again after a period of time, so that more wireless frequency resources are occupied, meanwhile, the uncertainty of synchronization precision is brought because the sending time is uncertain, namely, the resource barrier of a wireless channel is easily met, and further the loss of transmission information is caused.
Disclosure of Invention
In view of this, embodiments of the present invention provide a wireless communication method and apparatus to optimize an existing wireless communication method, so as to solve the problems of excessive resource consumption and low data communication accuracy caused by the arbitration principle of wireless channel collision.
In a first aspect, an embodiment of the present invention provides a wireless communication method, including:
determining whether the current time slot is a legal time slot corresponding to the sub communication node of the current time slot;
and if the current time slot is a legal time slot, transmitting the data to be transmitted to a main communication node when determining that the data to be transmitted exists.
In a second aspect, an embodiment of the present invention further provides a wireless communication method, including:
determining a legal time slot of the sub communication node;
and sending effective information containing the legal time slot to the sub-communication node so that the sub-communication node sends data to be sent according to the legal time slot when determining that the data to be sent exists.
In a third aspect, an embodiment of the present invention further provides a wireless communication apparatus, including:
the first time slot determining module is used for determining whether the current time slot is a legal time slot corresponding to the sub communication node of the first time slot determining module;
and the first sending module is used for sending the data to be sent to the main communication node when the current time slot is determined to be a legal time slot.
In a fourth aspect, an embodiment of the present invention further provides a wireless communication apparatus, including:
the second time slot determining module is used for determining the legal time slot of the sub-communication node;
and the second sending module is used for sending effective information containing the legal time slot to the sub-communication node so that the sub-communication node sends the data to be sent according to the legal time slot when determining that the data to be sent exists.
According to the wireless communication method and device provided by the embodiment of the invention, whether the current time slot is the legal time slot corresponding to the sub-communication node is determined by each sub-communication node, if the current time slot is the legal time slot corresponding to the sub-communication node, a technical means of sending data to be sent to the main communication node when the data to be sent is determined to exist, namely, the ultra-low power consumption time division multiple access multiplexing technology is adopted, so that collision generated when each sub-communication node sends data to the main communication node and overlarge resource consumption caused by a wireless channel collision arbitration principle are avoided, the accuracy of data transmission is improved, and meanwhile, the corresponding legal time slot is set for each sub-communication node, so that the synchronization precision of each sub-communication node can be ensured to reach 10 us.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1a is a flowchart of a wireless communication method according to an embodiment of the present invention;
fig. 1b is a diagram of an operating timeslot according to an embodiment of the present invention;
fig. 1c is a flowchart of a method for confirming success of an active reporting event according to an embodiment of the present invention;
fig. 2a is a flowchart of a wireless communication method according to a second embodiment of the present invention;
fig. 2b is a flowchart of a wireless communication method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a wireless communication method according to a third embodiment of the present invention;
fig. 4a is a flowchart of a wireless communication method according to a fourth embodiment of the present invention;
fig. 4b is a networking timeslot diagram according to a fourth embodiment of the present invention;
fig. 4c is a flowchart of a wireless communication method according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a wireless communication device according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a wireless communication device according to a sixth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
Example one
Fig. 1a is a flowchart of a wireless communication method according to an embodiment of the present invention, which is applicable to a case where a plurality of sub-communication nodes (e.g., a plurality of power distribution line fault indicators) and a main communication node (e.g., a server interacting with the plurality of power distribution line fault indicators) perform data communication. A wireless communication method provided by the present embodiment may be performed by a wireless communication apparatus that may be implemented by software and/or hardware and integrated in a child communication node. Referring to fig. 1a, the wireless communication method provided in this embodiment specifically includes:
s110, determining whether the current time slot is a legal time slot corresponding to the sub communication node. If the current time slot is a legal time slot, S120 is performed, otherwise, S110 is continuously performed.
In this embodiment, the child communication node may include: the intelligent water meter, the distribution line fault indicator and other devices are held by users and can be used for data collection, data transmission and simple data analysis. The simple data analysis mainly aims at analyzing data sent by the main communication node. The main communication node is a device which interacts with at least one of the child communication nodes and can manage the child communication nodes.
Specifically, each sub-communication node has a corresponding legal time slot, the legal time slot is determined by the main communication node, and each sub-communication node can transmit data to the main station only when the time slot is legal. The legal time slots comprise active reporting time slots and passive reporting time slots. The active reporting time slot is the corresponding time slot when the sub communication node actively reports data to the main communication node. The passive reporting time slot is a time slot for reporting corresponding data to the main communication node according to the reporting information after the sub communication node receives the reporting information sent by the main communication node. Generally speaking, after the sub-communication node successfully networks with the main communication node, the active reporting time slot of the sub-communication node is basically fixed. And the main communication node sends the report information to the sub communication nodes, wherein the report information comprises the passive report time slots of the sub communication nodes. The active reporting time slot and the passive reporting time slot correspond to the time slot when the sub communication node is in the working state.
And S120, when the data to be sent is determined to exist, sending the data to be sent to the main communication node.
Specifically, the data to be sent is data that the child communication node needs to send to the master station in its own legal time slot, where the data to be sent may include data to be sent that is actively reported and data to be sent that is passively reported. Further, if the current time slot is a legal time slot corresponding to the sub-communication node, determining whether data to be sent currently exists, if so, sending the data to be sent to the main communication node in the legal time slot, and if not, confirming whether the data to be sent exists again when the next legal time slot arrives.
Optionally, when the sub-communication node performs data interaction with the main communication node in the working state, the main communication node may periodically synchronize with the sub-communication node to ensure network stability and accuracy during data interaction. The synchronization period can be determined according to the number of the sub-communication nodes in the network, the active reporting time slot, the passive reporting time slot, and the battery power consumption of the main communication node and the sub-communication nodes. It should be noted that, even if the sub communication nodes do not perform data interaction with the main communication node in the synchronization period, the main communication node synchronizes with each sub communication node according to the synchronization period as long as the sub communication node is still in the current communication network.
The wireless communication method provided by the present embodiment is exemplified by using a plurality of distribution line fault indicators as sub-communication nodes, a server interacting with the plurality of distribution line fault indicators as a main communication node, and the sub-communication nodes being in an operating state.
Assume that there are 9 child communication nodes in total in this example, and that the 9 child communication nodes can respectively perform data interaction with 1 main communication node, and the 9 child communication nodes have successfully networked with the main communication node. Fig. 1b is a working timeslot diagram according to an embodiment of the present invention, where td1-td9 are active reporting timeslots of 9 sub-communication nodes, respectively, a total duration of the active reporting timeslots is t1, and t2 is a timeslot when the main communication node sends query information to the sub-communication nodes and a timeslot when the sub-communication node sends data to the main communication node according to the query information, which are collectively referred to as passive reporting timeslots. In practical application, the time length of t1+ t2 can meet the time length requirement that all the sub communication nodes actively report data. For a communication network configured with 9 sub communication nodes, the basic communication requirement can be satisfied when t1+ t2 is 100 ms. For a communication network configured with 15 sub-communication nodes, the basic communication requirement can be satisfied when t1+ t2 is 200 ms. Generally, the synchronization period TS is m × (t1+ t2), where the value of m is related to the number of child communication nodes in the network, the active reporting time slots, the passive reporting time slots, and the battery power consumption of the primary and child communication nodes.
For example, the 2 nd sub-communication node determines whether the current time slot is td2, if the current time slot is td2, determines whether there is actively reported data to be transmitted, if there is actively reported data to be transmitted, the actively reported data to be transmitted may be transmitted to the main communication node in td2, if there is no actively reported data to be transmitted, when the next time td2 arrives, it determines whether there is actively reported data to be transmitted, and when there is actively reported data to be transmitted, the actively reported data to be transmitted is transmitted to the main communication node. Each sub-communication node has a corresponding active reporting time slot, so that each sub-communication node basically does not generate a collision event when transmitting data to be transmitted.
It should be noted that the communication method provided in this embodiment is not limited to the sub-communication node being in a working state, and if the sub-communication node is in networking with the main communication node, the sub-communication node also needs to determine whether the current time slot is a networking time slot corresponding to itself, and further determines whether the data to be sent can be sent when the data to be sent exists. That is, it can be understood that the wireless communication method provided in the present embodiment is applicable to any procedure.
According to the technical scheme provided by the embodiment, whether the current time slot is the legal time slot corresponding to the sub-communication node is determined by each sub-communication node, if the current time slot is the legal time slot corresponding to the sub-communication node, when the data to be sent is determined to exist, the technical means of sending the data to be sent to the main communication node is adopted, namely, the ultra-low power consumption time division multiple access multiplexing technology is adopted, collision generated when each sub-communication node sends the data to the main communication node and overlarge resource consumption caused by a wireless channel collision arbitration principle are avoided, the accuracy of data transmission is improved, and meanwhile, the corresponding legal time slot is set for each sub-communication node, so that the synchronization precision of each sub-communication node can be guaranteed to reach 10 us.
Optionally, when the legal timeslot is an active reporting timeslot, referring to fig. 1c, after sending data to be sent to the main communication node, the method further includes:
and S130, in the first time interval, confirming whether the confirmation information fed back by the main communication node is received. If the confirmation information is received, S140 is performed, otherwise, S150 is performed.
Specifically, the specific value of the first time interval may be set according to the actual situation, for example, 200 ms. The first time interval may be determined by the master communication node and sent to the corresponding child communication node when networking with the child communication node. The first time interval can be determined by the sub-communication node, and the MCU of the sub-communication node can determine the first time interval according to parameters such as legal time slot, data capacity and battery power consumption.
The acknowledgement information fed back by the primary communication node may include: and response information about actively reported data to be sent. For example, it is determined that response data of actively reported data to be sent is received and/or adjustment data obtained after analyzing and processing the actively reported data to be sent is received. The sub-communication nodes can determine that the main communication node receives the actively reported data to be sent and/or adjust the self-operation parameters according to the adjustment data according to the confirmation information so as to better serve the user.
S140, confirming that the active reporting event is successful.
If the sub-communication node receives the confirmation information fed back by the main communication node in the first time interval, the main communication node accurately receives the actively reported data to be sent, and the sub-communication node determines that the actively reported event is successful.
S150, performing first pretreatment.
If the sub-communication node does not receive the confirmation information fed back by the main communication node within the first time interval, it indicates that the main communication node does not accurately receive the actively reported data to be sent (which may be data loss and not transmitted to the main communication node, or data error caused by a packet loss condition when the data to be sent is sent to the main communication node), and at this time, the sub-communication node performs a first preprocessing. The first preprocessing mode may be: and performing retransmission or quitting the active transmission to wait for the occurrence of the next active reporting event again, wherein the specific selection of which preprocessing mode can be determined by the MCU of the sub-communication node.
Example two
Fig. 2a is a flowchart of a wireless communication method according to a second embodiment of the present invention, the wireless communication method according to the present embodiment is embodied on the basis of the foregoing embodiment, and referring to fig. 2a, the wireless communication method according to the present embodiment includes:
s201, starting a receiving function at regular time, and confirming whether the broadcast networking information is received. If the broadcast networking information is received, S202 is executed, otherwise, S201 is continuously executed.
Wherein the receiving function is a function of receiving data by the child communication node. The broadcast networking information is information which is sent by the main communication node in a broadcast mode so as to inform the sub communication nodes of networking.
Specifically, the child communication node is in an offline state when not networking with the main communication node. In the off-line state, the sub-communication node starts the receiving function at regular time to receive the broadcast networking information broadcast by the main communication node. For example, the child communication node turns on the receiving function with a time length of 20ms every 2 minutes, and the rest of the time is in a sleep state.
Further, if the broadcast networking information is received while the receiving function is turned on, S202 is performed. If the broadcast networking information is not received when the receiving function is started, the receiving function is closed, and the receiving function is started again at regular time to confirm whether the broadcast networking information is received or not until the broadcast networking information is received.
S202, configuration information starting time is obtained from the broadcast networking information.
Specifically, the broadcast networking information includes a configuration information starting time, where the configuration information starting time is a time when the child communication node starts the receiving function again. Since the broadcast networking information is sent in a broadcast form, and configuration information when each sub-communication node is networked is not included, the main communication node needs to send the configuration information when each sub-communication node is networked to the corresponding sub-communication node again. In order to ensure the accuracy of the configuration information transmission, the primary communication node generally transmits the configuration information after a certain time interval after the broadcast networking information is transmitted, so as to prevent the configuration information from being confused with the broadcast networking information. Therefore, each sub-communication node receives the configuration information after a certain time interval after receiving the broadcast networking information, and at this time, in order to save the power consumption of the sub-communication node, the main communication node usually determines the transmission time of the configuration information, determines the configuration information starting time for starting the receiving function of the sub-communication node according to the transmission time, and writes the configuration information starting time into the broadcast networking information to transmit to the sub-communication node. After the start time of the configuration information is obtained by the child communication node according to the broadcast networking information, the child communication node can enter the dormant state again until the dormant state is finished at the start time of the configuration information, and the receiving function is started.
S203, when the configuration information is started, the receiving function is started again to acquire the configuration information.
And after the starting moment of the configuration information is started, the sub-communication node enters a networking time slot, wherein the networking time slot is a legal time slot of data interaction when the sub-communication node and the main communication node perform networking. It can also be understood that, in the networking process, the child communication node can perform data interaction with the main communication node only in its own networking time slot.
And S204, analyzing the configuration information to acquire networking information.
Generally, when a main communication node corresponds to a plurality of sub-communication nodes, each sub-communication node has a corresponding identity. The networking information may include an identity of the corresponding child communication node. Correspondingly, the child communication node can determine whether the networking information is the networking information of the child communication node by identifying the identity. If the configuration information is the own networking information, the configuration information is continuously analyzed, and if the configuration information is not the own networking information, other networking information is continuously waited until the own networking information is acquired. The identity of all the child communication nodes which are possible to be networked is stored in the main communication node in advance, and the identity can be updated periodically, but the identity of each child communication node is not changed once being determined.
Further, the networking information includes legal time slots of the child communication nodes. The legal time slot comprises an active reporting time slot when the sub-communication node actively reports data and a passive reporting time slot when the sub-communication node feeds back response information. The legitimate time slots preferably comprise active reporting time slots.
Illustratively, the configuration information further includes other parameters required when the child communication node performs networking with the master communication node. After the networking is successful, if the sub communication nodes have active reporting data, the active reporting data can be sent in the active reporting time slot.
S205, sending response information to the main communication node so that the main communication node determines that the sub communication node is successfully networked.
Specifically, after the sub-communication node acquires networking information and performs networking with the main communication node according to the networking information, response information is generated, and the response information mainly comprises a networking success signal. Further, the sub-communication node feeds back the response information to the main communication node during the networking time slot, so that the main communication node determines that the networking of the sub-communication node is successful.
Generally speaking, as long as the configuration information acquired by the child communication node contains the identity of the child communication node, the success of networking of the child communication node is determined, and only if the primary communication node needs to know that the networking of the child communication node is successful according to the response information sent by the child communication node. After networking is successful, the child communication nodes can enter a working state.
The foregoing is a wireless communication method in networking, and the following procedure is a wireless communication method in an operating state.
S206, determining whether the current time slot is a legal time slot corresponding to the sub communication node. If the current time slot is a legal time slot, executing S207, otherwise, continuing to execute S206.
And S207, when the data to be sent is determined to exist, sending the data to the main communication node.
In general, the passive reporting time slot of a child communication node may be different each time it passively reports, which is typically determined and notified by the master communication node each time it initiates a passive reporting event. The following mainly describes a specific process of a sub-communication node performing a passive event reporting once, where the sub-communication node is a node that has successfully networked. Referring to fig. 2b, it specifically includes:
and S208, receiving the inquiry starting information sent by the main communication node.
After networking is successful, the sub-communication nodes can receive query starting information sent by the main communication node in real time, and the query starting information is information for informing the sub-communication nodes of about query events to be carried out by the main communication node. The query event may include: data query events, environmental monitoring query events, synchronization events, and the like. The inquiry starting information comprises a passive reporting time slot.
S209, acquiring the passive reporting time slot in the query starting information.
The passive reporting time slot is not only the time slot of the sub communication node for sending the passive reporting data, but also the time slot of the main communication node for sending the query information. Therefore, the specific time for the main communication node to inquire can be determined after the sub communication node acquires the passive reporting time slot.
S210, in the passive reporting time slot, whether the inquiry information sent by the main communication node is received or not is determined. If the query information is received, S211 is performed, otherwise, S212 is performed.
Wherein, the query information generally includes: query type (data query, environment monitoring query, synchronization query, etc.), feedback data type, and the like.
And S211, generating inquiry response information according to the inquiry information as to-be-sent data sent to the main communication node. S206 is performed.
And if the sub communication node receives the query information, generating query response information according to the query information. The inquiry response information includes the data that the primary communication node needs to inquire.
S206, determining whether the current time slot is a legal time slot corresponding to the sub communication node. If the current time slot is a legal time slot, executing S207, otherwise, continuing to execute S206.
And the legal time slot is the passive reporting time slot corresponding to the query event.
And S207, when the data to be sent is determined to exist, sending the data to be sent to the main communication node.
Specifically, the data to be sent is query response information.
Optionally, after the sub-communication node sends the query response message to the main communication node, a time interval is set, for example, 200ms, if the query message or other messages sent by the main communication node are continuously received in the time interval, the received messages are continuously analyzed, and when messages need to be fed back to the main communication node, messages are fed back to the main communication node in a corresponding passive reporting time slot. And if the inquiry information sent by the main communication node is not received in the time interval, exiting the inquiry event, namely exiting the passive reporting event. Specifically, referring to fig. 1b, in general, the passive reporting time slot t2 is applicable to all the child communication nodes in the network, that is, the data communication between the primary communication node and the child communication node during the non-active reporting event is generally completed within t 2.
S212, quitting the passive reporting event.
Generally, when the master communication node determines the passive reporting time slot of the query event, the situation of a collision event generated when each of the child communication nodes feeds back data is avoided as much as possible.
The technical solution provided in this embodiment is to, after the receiving function is started regularly, if the broadcast networking information of the main communication node is received, obtain the start time of the configuration information in the broadcast networking information, and continue to enter the dormant state, and start the receiving function until the start time of the configuration information, perform networking according to the networking information in the configuration information, and simultaneously notify the main communication node that the networking is successful, after the networking is successful, if the current time slot is a legal time slot of itself, when it is determined that there is data to be sent, send the data to be sent to the main communication node, that is, through the ultra-low power consumption time division multiple access multiplexing technique, avoid collision when each sub-communication node sends data to the main communication node and excessive resource consumption due to the arbitration principle of wireless channel collision, improve the accuracy of data transmission, and simultaneously ensure the networking success rate on the premise of saving the power consumption of the sub-communication nodes, meanwhile, by setting corresponding legal time slots for each sub-communication node by using the networking method provided in the embodiment, the synchronization precision of each sub-communication node can be ensured to reach 10 u.
EXAMPLE III
Fig. 3 is a flowchart of a wireless communication method according to a third embodiment of the present invention, where the wireless communication method is applied to a case where data communication is performed between a plurality of sub-communication nodes (e.g., a plurality of distribution line fault indicators) and a main communication node (e.g., a server interacting with the plurality of distribution line fault indicators). A wireless communication method provided by the present embodiment may be performed by a wireless communication apparatus that may be implemented by software and/or hardware and integrated in a primary communication node. Referring to fig. 3, the wireless communication method provided in this embodiment specifically includes:
s310, determining the legal time slot of the sub communication node.
Optionally, when the master communication node performs networking, the master communication node obtains an information table of the child communication nodes that can perform networking from a higher-level server through local communication or remote communication, where the information table includes the identity of each child communication node. The main communication node determines the active reporting time slot of each sub communication node in sequence according to the identity, optionally, the passive reporting time slot can also be determined. Meanwhile, the primary communication node also needs to determine the networking time slot. In general, the active reporting time slot of each child communication node is different.
Optionally, the passive reporting time slot of each sub-communication node may be determined by the main communication node each time the sub-communication node needs to perform passive reporting. After networking with the sub-communication nodes is successful, if the main communication node has an inquiry event, the passive reporting time slot for data communication with the sub-communication nodes is determined, so that the sub-communication nodes can transmit data during the passive reporting time slot.
And S320, sending effective information containing legal time slots to the sub-communication nodes so that the sub-communication nodes send the data to be sent according to the legal time slots when determining that the data to be sent exists.
Specifically, the main communication node sends valid information containing valid time slots to the sub-communication nodes, so that the sub-communication nodes perform data interaction with the main communication node according to the valid time slots in the valid information.
If the legal time slot is an active reporting time slot, the valid information may be networking information. At this time, the main communication node only needs to send networking information including an active reporting time slot to the sub communication nodes during networking. If the legal time slot is the passive reporting time slot, the valid information is inquiry starting information or networking information, and at this time, the main communication node needs to determine when to send the valid information including the passive reporting time slot to the sub communication nodes according to actual conditions. It should be noted that the networking time slot also belongs to a legal time slot, and the corresponding effective information is broadcast networking information.
In the technical scheme provided by this embodiment, by determining the legal time slots of each sub-communication node and sending the legal time slots to the corresponding sub-communication nodes, it is ensured that each sub-communication node has a corresponding legal time slot, so as to avoid collision when each sub-communication node sends data to be sent to the main communication node and excessive resource consumption caused by the arbitration principle of wireless channel collision, and improve the accuracy of data transmission.
On the basis of the above embodiment, before sending valid information including valid time slots to the child communication node, the method further includes: and determining a sending channel, and performing frequency hopping processing on the carrier frequency of the effective information to ensure that the carrier frequency meets the frequency requirement of the sending channel.
In actual operation, the main communication node and the sub communication node perform data communication in the ISM band, and during data communication, the main communication node usually selects a relatively free channel as a channel for communicating with the sub communication node. Generally, when networking, the main communication node can select from 2 networking channels, and when non-networking communication (such as the sub communication node is in an operating state), the main communication node can select from 12 operating channels.
The specific selection mode can be set according to the actual situation. For example, when a working channel is selected, the passive reporting time slot can be used to train 12 working channels in turn to determine a spare working channel when there is no query task, and when the working channel needs to be replaced, the working channel can be directly called.
Since the frequency of each channel may be different, when determining a transmission channel for transmitting data, it is necessary to perform frequency hopping on valid information to ensure that the carrier frequency after frequency hopping meets the frequency requirement of the transmission channel.
Example four
Fig. 4a is a flowchart of a wireless communication method according to a fourth embodiment of the present invention, the wireless communication method according to the present embodiment is embodied on the basis of the foregoing embodiment, and referring to fig. 4a, the wireless communication method according to the present embodiment includes:
s410, determining the legal time slot of the sub communication node.
In this embodiment, the step is mainly applied to determine an active reporting timeslot and a passive reporting timeslot of a child communication node during networking. Meanwhile, the networking time slot needs to be determined.
And S420, sending broadcast networking information to the sub communication nodes at intervals of a set period.
Specifically, the interval setting period may be determined according to actual conditions, and generally, the period is the same as the time length of the receiving function which is continuously turned on after the child communication node turns on the receiving function periodically. For example, if the receiving function of 20ms is turned on every 2 minutes by the child communication node, the networking information is broadcasted by the main communication node every 20 ms. Optionally, when the broadcast networking information is sent, the main communication node needs to continuously send the broadcast networking information at a set interval period within a certain time, so as to ensure that each sub-communication node can receive the broadcast networking information. For example, broadcast networking information is sent every 20ms for 1 minute. The broadcast networking information comprises networking time slots.
And S430, sending the configuration information to the child communication node at the information starting time.
The starting time of the configuration information can be determined by the main communication node according to the actual situation, and the starting time of the configuration information is also the starting time of the networking time slot. If the current time slot enters the starting moment of the configuration information, the data receiving and sending can be carried out between the main communication node and the sub communication nodes when networking is carried out. For example, fig. 4b is a networking time slot diagram provided by the fourth embodiment of the present invention, and referring to fig. 4b, in the T period, the master communication node sends broadcast networking information to the child communication nodes every wt, and enters the networking time slot T0 at the configuration information starting time Q, that is, starts sending configuration information to the child communication nodes at the configuration information starting time Q.
Specifically, the configuration information includes a legal timeslot, and the legal timeslot preferably includes an active reporting timeslot and a passive reporting timeslot.
Illustratively, the master communication node determines an order of sending the configuration information to the child communication nodes according to the identity of the child communication nodes. And starting at the configuration information starting time, the main communication node sequentially sends the configuration information to each sub communication node according to the sequence. The method specifically comprises the following steps: the main communication node sends configuration information to a sub-communication node, and if response information sent by the sub-communication node is received within a set interval (such as 200ms), the sub-communication node is determined to be successfully networked, and the configuration information is sent to the next sub-communication node according to the sequence until the configuration information is sent to all the sub-communication nodes. Further, recording the sub-communication nodes which do not receive the response information within the set interval, and after sending the configuration information, sending the corresponding configuration information to the sub-communication nodes again, which is called a re-networking process. And if the main communication node still does not receive the response information of a certain sub communication node after N (N can be 2, 3 or 4) times of networking, the sub communication node is considered as an invalid sub communication node, and the processing of the data related to the sub communication node is stopped.
S440, if response information based on the configuration information sent by the sub communication nodes is received, the success of networking of the sub communication nodes is determined.
Illustratively, after N times of re-networking, it is confirmed that the main communication node and the sub communication node feeding back the response information successfully perform networking. Further, after the networking is successful, the main communication node may initiate a query event, and the sub communication nodes may also actively report data. When the sub-communication nodes report data actively, after the main communication node needs to receive the actively reported data, the main communication node feeds back confirmation information of the actively reported data to the sub-communication nodes within a first time interval, so that the sub-communication nodes can confirm that the actively reported event is successful.
The primary communication node initiates a query event, which occurs after successful networking. Referring to fig. 4c, the process mainly comprises:
s450, determining the legal time slot of the sub communication node.
Wherein, the legal time slot is a passive reporting time slot. Taking fig. 1b as an example, the passive reporting slot is in T2.
Optionally, the master communication node needs to predetermine parameters such as a passive reporting time slot, a query type, and a feedback data type, and generate query start information and query information according to the parameters, where the query start information includes: and passive up time slot, the query information comprises: query type and feedback data type, etc.
And S460, sending effective information containing legal time slots to the sub-communication nodes, so that the sub-communication nodes send the data to be sent according to the legal time slots when determining that the data to be sent exists.
Specifically, the valid information is: and inquiring starting information.
And S470, sending the query information to the sub communication nodes in the passive reporting time slot.
The passive reporting time slot may also be a time slot for the master communication node to send data to the slave communication node when querying for an event.
And S480, acquiring the inquiry response information sent by the sub communication node in a second set interval.
After the main communication node sends the query information, the main communication node needs to acquire the query response information sent by the sub communication node within a second set interval to determine that the query event is successful. The second setting interval may be set according to actual conditions, such as 200 ms.
And S490, analyzing the query response information to obtain a query result.
Optionally, if it is determined according to the query result that the primary communication node needs to communicate with the secondary communication node again, the primary communication node may continue to communicate with the secondary communication node in the passive reporting time slot, and the specific communication process may refer to S470-S490.
According to the technical scheme provided by the embodiment, the legal time slots of the sub-communication nodes are determined, networking, event active reporting and event inquiring between the sub-communication nodes are realized according to the legal time slots, namely, through an ultra-low power consumption time division multiple access multiplexing technology, collision generated when each sub-communication node sends data to the main communication node and overlarge resource consumption caused by a wireless channel collision arbitration principle are avoided, meanwhile, main data processing and legal time slot confirmation are determined at the main communication node, so that reasonable scheduling and distribution are conveniently performed by the main communication node, the traffic of the sub-communication nodes is reduced, the power consumption of the sub-communication nodes is further reduced, and meanwhile, the corresponding legal time slots are set for each sub-communication node, and the synchronization precision of each sub-communication node can be guaranteed to reach 10 us.
EXAMPLE five
Fig. 5 is a schematic structural diagram of a wireless communication device according to a fifth embodiment of the present invention. Referring to fig. 5, the apparatus includes: a first slot determination module 501 and a first transmission module 502.
The first time slot determining module 501 is configured to determine whether a current time slot is a valid time slot corresponding to a sub-communication node of the current time slot; a first sending module 502, configured to send data to be sent to the primary communication node when it is determined that data to be sent exists if the current time slot is a legal time slot.
On the basis of the above embodiment, the method further includes: the first receiving module is used for starting a receiving function at regular time before determining whether the current time slot is a legal time slot corresponding to the sub-communication node of the first receiving module and confirming whether the broadcast networking information is received or not; the starting time determining module is used for acquiring the starting time of the configuration information in the broadcast networking signal information if the broadcast networking information is received; the second receiving module is used for starting the receiving function again to acquire the configuration information when the configuration information is started; the networking information acquisition module is used for analyzing the configuration information to acquire networking information, and the networking information comprises legal time slots of the sub communication nodes; and the first response module is used for sending response information to the main communication node so that the main communication node determines that the sub-communication node is successfully networked.
On the basis of the above embodiment, the legal timeslot is a passive reporting timeslot, and further includes: the third receiving module is used for determining whether the current time slot is before the legal time slot corresponding to the sub communication node of the third receiving module, and receiving the query starting information sent by the main communication node; the time slot acquisition module is used for acquiring the passive reporting time slot in the inquiry starting information; the inquiry information determining module is used for determining whether inquiry information sent by the main communication node is received or not in the passive reporting time slot; and the data determining module is used for generating inquiry response information according to the inquiry information if the inquiry information is received and using the inquiry response information as the data to be sent to the main communication node.
On the basis of the above embodiment, the legal timeslot is an active reporting timeslot, and further includes: the confirmation information feedback module is used for confirming whether the confirmation information fed back by the main communication node is received or not within a first time interval after the data to be sent is sent to the main communication node when the data to be sent is confirmed to exist; and the report success module is used for confirming that the active report event is successful if the confirmation information is received.
The wireless communication device provided by this embodiment can perform the wireless communication method provided by the first embodiment and/or the second embodiment, and has corresponding functions and advantages.
EXAMPLE six
Fig. 6 is a schematic structural diagram of a wireless communication device according to a sixth embodiment of the present invention. Referring to fig. 6, the apparatus includes: a second time slot determining module 601 and a second sending module 602.
The second time slot determining module 601 is configured to determine a legal time slot of a child communication node; a second sending module 602, configured to send effective information including a legal time slot to the child communication node, so that the child communication node sends the data to be sent according to the legal time slot when determining that the data to be sent exists.
On the basis of the above embodiment, the second sending module 602 includes: a networking information sending unit, configured to send broadcast networking information to the child communication nodes at intervals of a set period; the configuration information sending unit is used for sending configuration information to the sub communication node at the starting time of the configuration information, and the configuration information comprises a legal time slot; and the networking success confirmation unit is used for determining that the networking of the sub communication nodes is successful if the response information based on the configuration information sent by the sub communication nodes is received.
On the basis of the above embodiment, the legal timeslot is a passive reporting timeslot, and the valid information is inquiry start information, further comprising: the query information sending module is used for sending effective information containing legal time slots to the sub-communication nodes so that the sub-communication nodes send query information to the sub-communication nodes in a passive reporting time slot after sending data to be sent according to the legal time slots when determining that the data to be sent exists; the query response acquisition module is used for acquiring query response information sent by the sub communication nodes in a second set interval; and the query result determining module is used for analyzing the query response information to obtain a query result.
On the basis of the above embodiment, the method further includes: and the channel selection module is used for determining a sending channel before sending the effective information containing the legal time slot to the sub-communication node, and carrying out frequency hopping processing on the carrier frequency of the effective information so as to ensure that the carrier frequency meets the frequency requirement of the sending channel.
The wireless communication device provided by this embodiment can perform the wireless communication method provided by the third embodiment and/or the fourth embodiment, and has corresponding functions and advantages.
The embodiment of the present invention further includes a wireless communication system, where the wireless communication system includes a main communication node and at least one sub communication node, and the wireless communication system may be configured to execute the wireless communication method provided in any of the above embodiments, and has corresponding functions and advantages.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A method of wireless communication, comprising:
determining whether the current time slot is a legal time slot corresponding to the sub communication node of the current time slot;
if the current time slot is a legal time slot, transmitting the data to be transmitted to a main communication node when the data to be transmitted is determined to exist;
the legal time slots comprise an active reporting time slot and a passive reporting time slot, wherein the active reporting time slot is a time slot corresponding to the time when the sub-communication node actively reports data to the main communication node, and the passive reporting time slot is a time slot corresponding to the time when the sub-communication node reports data to the main communication node according to the reporting information after receiving the reporting information sent by the main communication node;
determining whether the current time slot is before a legal time slot corresponding to the sub-communication node, further comprising:
starting a receiving function at regular time, and confirming whether broadcasting networking information is received or not;
if the broadcast networking information is received, acquiring configuration information starting time in the broadcast networking information;
starting the receiving function again at the starting time of the configuration information to acquire the configuration information;
analyzing the configuration information to acquire networking information, wherein the networking information comprises legal time slots of the sub communication nodes;
sending response information to the main communication node so that the main communication node determines that the child communication nodes successfully perform networking;
the wireless communication method is applied to data communication between a plurality of sub-communication nodes and a main communication node, and each sub-communication node corresponds to a different active reporting time slot.
2. The wireless communication method of claim 1, wherein the legal timeslot is a passive reporting timeslot;
the determining whether the current time slot is before the valid time slot corresponding to the own sub-communication node further includes:
receiving query starting information sent by the main communication node;
acquiring a passive reporting time slot in the query starting information;
determining whether query information sent by the main communication node is received or not in the passive reporting time slot;
and if the query information is received, generating query response information according to the query information to serve as the data to be sent to the main communication node.
3. The wireless communication method of claim 1, wherein the legal timeslot is an active reporting timeslot;
when it is determined that there is data to be transmitted, after the data to be transmitted is transmitted to the main communication node, the method further includes:
confirming whether confirmation information fed back by the main communication node is received or not within a first time interval;
and if the confirmation information is received, confirming that the active reporting event is successful.
4. A method of wireless communication, comprising:
determining a legal time slot of the sub communication node;
sending effective information containing the legal time slot to the sub-communication node so that the sub-communication node sends data to be sent according to the legal time slot when determining that the data to be sent exists;
the legal time slots comprise an active reporting time slot and a passive reporting time slot, wherein the active reporting time slot is a time slot corresponding to the time when the sub-communication node actively reports data to the main communication node, and the passive reporting time slot is a time slot corresponding to the time when the sub-communication node reports data to the main communication node according to the reporting information after receiving the reporting information sent by the main communication node;
the sending of the valid information including the valid time slot to the child communication node so that the sending of the data to be sent according to the valid time slot when the child communication node determines that the data to be sent exists includes:
sending broadcast networking information to the sub communication nodes at intervals of a set period;
sending configuration information to the child communication nodes at the starting time of the configuration information, wherein the configuration information comprises legal time slots;
if response information based on the configuration information sent by the child communication node is received, determining that the child communication node successfully networks;
the wireless communication method is applied to data communication between a plurality of sub-communication nodes and a main communication node, and each sub-communication node corresponds to a different active reporting time slot.
5. The wireless communication method according to claim 4, wherein the legal timeslot is a passive reporting timeslot, and the valid information is query start information;
the sending effective information including the legal time slot to the sub-communication node so that the sub-communication node sends data to be sent according to the legal time slot when determining that the data to be sent exists further includes:
sending query information to the child communication nodes in the passive reporting time slot;
acquiring query response information sent by the sub communication nodes in a second set interval;
and analyzing the query response information to obtain a query result.
6. The wireless communication method according to claim 4, wherein before sending the valid information including the valid time slot to the child communication node, further comprising:
and determining a sending channel, and performing frequency hopping processing on the carrier frequency of the effective information to ensure that the carrier frequency meets the frequency requirement of the sending channel.
7. A wireless communications apparatus, comprising:
the first time slot determining module is used for determining whether the current time slot is a legal time slot corresponding to the sub communication node of the first time slot determining module;
a first sending module, configured to send, if the current time slot is a legal time slot, to-be-sent data to a main communication node when it is determined that the to-be-sent data exists;
the legal time slots comprise an active reporting time slot and a passive reporting time slot, wherein the active reporting time slot is a time slot corresponding to the time when the sub-communication node actively reports data to the main communication node, and the passive reporting time slot is a time slot corresponding to the time when the sub-communication node reports data to the main communication node according to the reporting information after receiving the reporting information sent by the main communication node;
the device further comprises: the first receiving module is used for starting a receiving function at regular time before determining whether the current time slot is a legal time slot corresponding to the sub-communication node of the first receiving module and confirming whether the broadcast networking information is received or not; the starting time determining module is used for acquiring the starting time of the configuration information in the broadcast networking signal information if the broadcast networking information is received; the second receiving module is used for starting the receiving function again to acquire the configuration information when the configuration information is started; the networking information acquisition module is used for analyzing the configuration information to acquire networking information, and the networking information comprises legal time slots of the sub communication nodes; the first response module is used for sending response information to the main communication node so that the main communication node determines that the sub-communication node is successfully networked;
the wireless communication method is applied to data communication between a plurality of sub-communication nodes and a main communication node, and each sub-communication node corresponds to a different active reporting time slot.
8. A wireless communications apparatus, comprising:
the second time slot determining module is used for determining the legal time slot of the sub-communication node;
a second sending module, configured to send valid information including the valid time slot to the child communication node, so that the child communication node sends data to be sent according to the valid time slot when determining that data to be sent exists;
the legal time slots comprise an active reporting time slot and a passive reporting time slot, wherein the active reporting time slot is a time slot corresponding to the time when the sub-communication node actively reports data to the main communication node, and the passive reporting time slot is a time slot corresponding to the time when the sub-communication node reports data to the main communication node according to the reporting information after receiving the reporting information sent by the main communication node;
the second sending module includes: a networking information sending unit, configured to send broadcast networking information to the child communication nodes at intervals of a set period; the configuration information sending unit is used for sending configuration information to the sub communication node at the starting time of the configuration information, and the configuration information comprises a legal time slot; the networking success confirming unit is used for confirming that the networking of the sub communication nodes is successful if the response information based on the configuration information sent by the sub communication nodes is received;
the wireless communication method is applied to data communication between a plurality of sub-communication nodes and a main communication node, and each sub-communication node corresponds to a different active reporting time slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132154.XA CN106921987B (en) | 2017-03-07 | 2017-03-07 | Wireless communication method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132154.XA CN106921987B (en) | 2017-03-07 | 2017-03-07 | Wireless communication method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106921987A CN106921987A (en) | 2017-07-04 |
| CN106921987B true CN106921987B (en) | 2020-12-15 |
Family
ID=59460932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710132154.XA Active CN106921987B (en) | 2017-03-07 | 2017-03-07 | Wireless communication method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106921987B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091402A (en) * | 2017-11-30 | 2018-05-29 | 上海京颐科技股份有限公司 | A kind of medical terminal and data receiver method and device for it, storage medium |
| CN111314185B (en) * | 2018-12-12 | 2022-05-13 | 深圳市云海物联科技有限公司 | Ad hoc network method, ad hoc network response method, controlled equipment and gateway |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929824A (en) * | 2014-03-26 | 2014-07-16 | 中国人民解放军总参谋部第六十三研究所 | Wireless network node neutral access dynamic configuration method |
| CN104968029A (en) * | 2015-05-20 | 2015-10-07 | 中国电子科技集团公司第三十八研究所 | Synchronous time division multiple access method suitable for wireless sensing network |
| CN104994567A (en) * | 2015-07-11 | 2015-10-21 | 李雄 | Method and system for low-power dissipation wireless networking communication |
| CN105208638A (en) * | 2015-08-27 | 2015-12-30 | 重庆甲虫网络科技有限公司 | Communication method of wireless sensor network |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024788B (en) * | 2012-12-23 | 2015-07-29 | 浙江宏睿通信技术有限公司 | A kind of method that DMR/PDT terminal equipment communicates on two time slot simultaneously |
| WO2016183691A1 (en) * | 2015-05-20 | 2016-11-24 | The Governing Council Of The University Of Toronto | Transparent metallo-dielectric coatings, structures, and devices, and methods of fabrication thereof |
| CN106128084A (en) * | 2016-09-05 | 2016-11-16 | 湖南农业大学 | Wireless meter reading method and system |
-
2017
- 2017-03-07 CN CN201710132154.XA patent/CN106921987B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929824A (en) * | 2014-03-26 | 2014-07-16 | 中国人民解放军总参谋部第六十三研究所 | Wireless network node neutral access dynamic configuration method |
| CN104968029A (en) * | 2015-05-20 | 2015-10-07 | 中国电子科技集团公司第三十八研究所 | Synchronous time division multiple access method suitable for wireless sensing network |
| CN104994567A (en) * | 2015-07-11 | 2015-10-21 | 李雄 | Method and system for low-power dissipation wireless networking communication |
| CN105208638A (en) * | 2015-08-27 | 2015-12-30 | 重庆甲虫网络科技有限公司 | Communication method of wireless sensor network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106921987A (en) | 2017-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3298710B1 (en) | Low power sensor node operation for wireless network | |
| US8335244B2 (en) | Data transmission method, network device, and communication system | |
| EP2728764B1 (en) | Synchronous access method, and communication device and system in frequency hopping radio communication | |
| JP6823169B2 (en) | Synchronization between low-energy endpoint devices and parent devices in a time slot channel hopping network | |
| CN113596741B (en) | Enhanced broadcast transmission method in non-time slot channel hopping medium access control | |
| CN101978760A (en) | Hybrid multiple access method and system in wireless networks with extended content free access period | |
| CN105935001A (en) | Redundant scheduling information for direct communication | |
| US20230018928A1 (en) | Method and Device for Power-Saving in Wireless Sidelink Communication | |
| US8873587B2 (en) | Communication method using time-division multiplexing | |
| CN101815286A (en) | Network based on beacon, method of joining network and frame transmission method and device | |
| US10333665B2 (en) | Method and system for wireless communication between terminals and half-duplex base stations | |
| CN115643593B (en) | Wireless ad hoc network communication system and method based on high dynamic routing protocol | |
| CN103491516A (en) | Control signal transmission method and base station | |
| EP2925072B1 (en) | Node scheduling method and device | |
| CN111132303B (en) | Wireless downlink communication method with low power consumption and high real-time performance | |
| CN106921987B (en) | Wireless communication method and device | |
| US20210282134A1 (en) | Method, system, controller, entity and computer program for network access | |
| CN110034942B (en) | Networking communication control method and system based on half-duplex radio station | |
| JP2019515565A (en) | Method of forming a time synchronization channel hopping network using guaranteed time slots | |
| EP2105037B1 (en) | System, method and apparatus employing tone and/or tone patterns to indicate the message type in wireless sensor networks | |
| JP2014057279A (en) | Radio communication device, radio communication system and radio communication control method | |
| CN111935691A (en) | Wireless low-power-consumption configuration method and device | |
| KR20220065823A (en) | Distributed Synchronization Solution for Wireless Communication Networks | |
| CN111988774B (en) | Communication method and device of beacon frame in communication network | |
| JP5691016B2 (en) | Wireless communication system, wireless terminal, and program |
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 |