WO2013187752A1 - Method and system of wireless communication using master carrier signal - Google Patents

Method and system of wireless communication using master carrier signal Download PDF

Info

Publication number
WO2013187752A1
WO2013187752A1 PCT/MY2013/000102 MY2013000102W WO2013187752A1 WO 2013187752 A1 WO2013187752 A1 WO 2013187752A1 MY 2013000102 W MY2013000102 W MY 2013000102W WO 2013187752 A1 WO2013187752 A1 WO 2013187752A1
Authority
WO
WIPO (PCT)
Prior art keywords
master
carrier signal
sending
wireless
network
Prior art date
Application number
PCT/MY2013/000102
Other languages
French (fr)
Inventor
Khoshdelniat Reza
Kanagaratnam Pannirselvam
Rao Sinniah Gopinath
Original Assignee
Mimos Berhad
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mimos Berhad filed Critical Mimos Berhad
Publication of WO2013187752A1 publication Critical patent/WO2013187752A1/en

Links

Classifications

    • 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
    • H04W40/244—Connectivity information management, e.g. connectivity discovery or connectivity update using a network of reference devices, e.g. beaconing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to a method to enable the wireless nodes in a wireless mesh network communicate with each other and the gateways without the need of multi hopping and routing which requires master gateways in the network with high transmission power in order to transmit the master carrier signal for covering the network.
  • the wireless nodes in the network will synchronize with the master gateways and will send their message which will be added to the master carrier signal and carried on to the other nodes in the network or the other master gateway.
  • Wireless sensor network consists of sensor nodes and gateway. Sensor nodes will discover the available gateway and send the data to the gateway accordingly.
  • the conventional wireless sensor network usually consists of one gateway. Therefore, all the sensor nodes will send their data to the gateway. This will cause the data traffic of sensor nodes which are nearby the gateway to be higher. This will lead to higher message collision in the wireless sensor network. As a result, higher retransmissions are required and cause higher power consumption.
  • One of the methods to pass the message in a wireless sensor network is by multi hopping. When a gateway wants to send a request to a sensor. node, the message will route through all the sensor nodes in the wireless sensor network by passing on the message from one sensor node to another until the message reaches the desired destination. If the destination node is far away from the gateway, it will involve a lot of sensor nodes.
  • Sensor nodes will send messages with each other in a mesh networks. More messages will lead to more traffic in the system. This will cause more power consumptions. As a result, the life time of the sensor nodes will be reduced.
  • One of the disadvantages by .having one gateway in high traffic sensor networks such as mesh networks or 6L0WPA is the sensor nodes which are closer to the gateway would be consuming more power to relay the message so those nodes will die faster compare to the sensor nodes further from the gateway. Besides that, the sensor nodes which are nearer to the gateway will be having very high traffic and will lead to message collisions.. The sensor nodes will not able, to function if the gateway dies.
  • routing protocol which will increase the memory usage on the sensor nodes. Besides that, routing protocol will increase the complexity and computation overhead for the sensor nodes .
  • the present invention provides a system comprising at least one master gateway and one wireless node for wireless communication by sending and receiving a master carrier signal in a wireless network.
  • the master gateway will transmit the master carrier signal, periodic beacon and location information, and receive the combined data signal with said master carrier signal from a wireless node in the network.
  • the wireless node will transmit the data signal at the correct time and phase to combine with said master carrier signal and direct it to the desired destination.
  • the objective of the present invention is reduce the message overhead by eliminating the routing messages and multi hopping in the network.
  • Still another objective of the present invention is to reduce the computation overhead by eliminating the need for calculating the routes and processing the routing messages.
  • Still another objective of the present invention is to reduce the memory overhead by eliminating the need for routing tables and buffering the messages from the neighbor nodes.
  • Still another objective of the present invention is to reduce the power consumptions since the message, computation and memory overhead has been reduced.
  • Still another objective of the present invention is to enable the nodes to communicate with any other node or master gateway in the network with low power transmission.
  • Still another objective of the present invention is to reduce the message delivery delay in the network by eliminating the need for multi hop communications.
  • the wireless nodes can communicate with other nodes and gateways in a wireless mesh network without the need of multi hopping and routing.
  • a master gateway with high transmission power is required in order to transmit the master carrier signal to cover the wireless network.
  • the wireless nodes in the network will calculate the correct time and phase by using the location information of the desired destination.
  • the wireless nodes will send their message at the right time and phase so that the message will be combined with the master carrier signal and sent to the desired destination at the correct angle.
  • Figure 1 shows wireless communication using master carrier signal.
  • Figure 2 shows wireless mesh sensor network.
  • Figure 3 shows the node (14) signal is directed to master gateway (10) by determining the distance, d (51) and angle (50) .
  • Figure 4 shows the general process flow for wireless communication with master carrier signal.
  • Figure 5 shows the detailed process flow for wireless communication with master carrier signal with regards of gateways .
  • Figure 6 shows the detailed process flow for wireless communication with master carrier signal with regards of wireless node.
  • Figure 7 shows wireless mesh network using master carrier signal for communication.
  • Figure., 8 shows wireless node sending message to another destined node.
  • This invention consists of a system for wireless communication by sending and receiving a master carrier signal in a wireless network.
  • the system consists of at least one master gateway and one wireless node.
  • the master gateway will transmit the master carrier signal (20), periodic beacon and location information, and receive the combined data signal (22) with said master carrier signal (20) from a wireless node (14) in the network.
  • the wireless node will transmit the data signal (21) at the correct time and phase to combine (22) with said master carrier signal (20) and direct it to the desired destination.
  • the master gateway may or may not be connected to the backhaul. However, the master gateway should have high transmission power in order to cover the entire network and send beacon signal periodically. Since the master gateways (10) do not have any power supply limitations, they can do high power " transmissions in the network. The master gateway will be using any of the existing methods to discover its location. If there is more than one master gateway in the network, they will perform time synchronization between each other. The master gateways will periodically send beacon signals which will be used by the sensors to calculate the correct time and phase to send their signals.
  • the system will include the time and phase calculation module. This will enable the wireless note in the network to calculate the correct time and phase by using the location information of the desired destination.
  • the wireless nodes will send their data signal at the right time and phase so that the data signal will be combined with the master carrier signal and sent to the desired destination at the correct angle. Therefore there will be no need for routing protocol in the network and then nodes can communicate with each other or with the master gateway without multi-hopping and routing.
  • the signal (21) from the node will be combined with the master carrier signal (20) from the master gateway to direct the signal (22) from the node to the master gateway or other destination nodes.
  • I 0 is the signal (20) from the master gateway (13) and Ii is the signal (21) from the node (14) .
  • ⁇ is the is the wave number, i.e. 2 ⁇ / ⁇ where ⁇ is the wavelength of the carrier frequency and d is the separation between the node (14) and Master gateway (13) antennas.
  • ⁇ is the polar angle and a is the phase shift induced to control the direction.
  • the direction of the beam is the angle at which the cosine of the phase term . given in the . revious equation - is maximized, ie. Ma ⁇ cos ( pdcose+c ⁇
  • One of the methods to determine the distance, d (51) and the location of the Master Gateway is by using GPS coordinates of the Master Gateway (13) and node (14) .
  • the required phase term a can then be introduced by the sensor to ensure that the signal is directed to the Master Gateway (10) at angle ⁇ (50) . Please refer to Figure 3 for details.
  • One of the advantages of this invention is to reduce the message overhead by eliminating the routing messages and multi hopping in the network. Besides that, the invention will reduce the computation overhead by eliminating the need for calculating the routes and processing the routing messages. Furthermore, the invention will reduce the memory overhead by eliminating the need for routing tables and buffering the messages from the neighbor nodes. The invention will be able to reduce the. power consumptions since the message, computation and memory overhead has been reduced. The invention will enable the nodes to communicate with any other node or master gateway in the network with low power transmission and. no need of routing and multi hopping. -
  • the general flowchart of this invention is shown in Figure 4.
  • the gateway will carry out time synchronization with other gateway and the nodes. Then, the gateway will send beacon signal periodically (30) .
  • the node will calculate the correct time to send the signal (21) after receiving the beacon signal from the gateway (31) .
  • the signal (21) from the node will combine (22) with the master carrier signal (20) and will be directed to the desired destination.
  • the detailed process flowchart for the gateways of this invention is shown in Figure 5.
  • the gateway will send time synchronization message to the other gateway and the nodes. Then the gateway will discover and advertise its location and the location data of the nodes in the network.
  • the master gateway (10) starts to transmit master carrier signal (20) periodically in synchronous with other gateway (33) .
  • the master gateway (10) will send beacon signal every T milliseconds (34.):. if the master gateway (10) is sending a message, it will set the sending time based on the active time of the nodes (14) and send the signal (36) . If not, the master gateway (10) will just receive the incoming signals.
  • the detailed process flowchart for the wireless node of this invention is shown in Figure 6.
  • the wireless node will synchronize its time with the gateway and will discover its location in the network and send the location data to the gateways. If the node is sending a message, the node will wait for receiving the beacon signal (37) and will calculate the right time and right phase to send the signal (3 ' 8) . The node will send the signal (21) at the correct phase (39) . The signal (21) will combine (22) with the master carrier signal (20) and directed to the destination at the correct angle (40) . If the node is not sending a message, it will receive the incoming signals during the active time.

Abstract

The invention relates to a method to enable the wireless nodes in a wireless mesh network communicate with each other and the gateways without the need of multi hopping and routing which requires master gateways in the network with high transmission power in order to transmit the master carrier signal for covering the network. The wireless nodes will use the location information of the desired destination to calculate the correct time and phase. When the nodes send their signal at the right time and phase, it will be combined with the master carrier signal and the combined signal will have the correct angle towards the desired destination.

Description

Method and System of Wireless Communication Using Master
Carrier Signal
Field of Invention
The present invention relates to a method to enable the wireless nodes in a wireless mesh network communicate with each other and the gateways without the need of multi hopping and routing which requires master gateways in the network with high transmission power in order to transmit the master carrier signal for covering the network. The wireless nodes in the network will synchronize with the master gateways and will send their message which will be added to the master carrier signal and carried on to the other nodes in the network or the other master gateway.
Background of the invention
Wireless sensor network consists of sensor nodes and gateway. Sensor nodes will discover the available gateway and send the data to the gateway accordingly. The conventional wireless sensor network usually consists of one gateway. Therefore, all the sensor nodes will send their data to the gateway. This will cause the data traffic of sensor nodes which are nearby the gateway to be higher. This will lead to higher message collision in the wireless sensor network. As a result, higher retransmissions are required and cause higher power consumption. One of the methods to pass the message in a wireless sensor network is by multi hopping. When a gateway wants to send a request to a sensor. node, the message will route through all the sensor nodes in the wireless sensor network by passing on the message from one sensor node to another until the message reaches the desired destination. If the destination node is far away from the gateway, it will involve a lot of sensor nodes.
Sensor nodes will send messages with each other in a mesh networks. More messages will lead to more traffic in the system. This will cause more power consumptions. As a result, the life time of the sensor nodes will be reduced.
One of the disadvantages by .having one gateway in high traffic sensor networks such as mesh networks or 6L0WPA is the sensor nodes which are closer to the gateway would be consuming more power to relay the message so those nodes will die faster compare to the sensor nodes further from the gateway. Besides that, the sensor nodes which are nearer to the gateway will be having very high traffic and will lead to message collisions.. The sensor nodes will not able, to function if the gateway dies.
One of the disadvantages of having multi hopping in sensor networks such as mesh networks or 6L0WPA is the need of a routing protocol which will increase the memory usage on the sensor nodes. Besides that, routing protocol will increase the complexity and computation overhead for the sensor nodes .
Therefore the present invention provides a system comprising at least one master gateway and one wireless node for wireless communication by sending and receiving a master carrier signal in a wireless network.
The master gateway will transmit the master carrier signal, periodic beacon and location information, and receive the combined data signal with said master carrier signal from a wireless node in the network.
The wireless node will transmit the data signal at the correct time and phase to combine with said master carrier signal and direct it to the desired destination. The objective of the present invention is reduce the message overhead by eliminating the routing messages and multi hopping in the network. Still another objective of the present invention is to reduce the computation overhead by eliminating the need for calculating the routes and processing the routing messages.
Still another objective of the present invention is to reduce the memory overhead by eliminating the need for routing tables and buffering the messages from the neighbor nodes.
Still another objective of the present invention is to reduce the power consumptions since the message, computation and memory overhead has been reduced.
Still another objective of the present invention is to enable the nodes to communicate with any other node or master gateway in the network with low power transmission.
Still another objective of the present invention is to reduce the message delivery delay in the network by eliminating the need for multi hop communications. These and other objects and advantages of the present invention will become apparent to those skilled in the art from a consideration of the following specification and claims.
Summary of the Invention
The wireless nodes can communicate with other nodes and gateways in a wireless mesh network without the need of multi hopping and routing. A master gateway with high transmission power is required in order to transmit the master carrier signal to cover the wireless network. The wireless nodes in the network will calculate the correct time and phase by using the location information of the desired destination. The wireless nodes will send their message at the right time and phase so that the message will be combined with the master carrier signal and sent to the desired destination at the correct angle. Brief Description of the Drawings
Other objects, features, and advantages of the ^ invention will be apparent from the following description when read with reference to the accompanying drawings. In the drawings, wherein like reference. numerals denote corresponding parts throughout the several views :
Figure 1 shows wireless communication using master carrier signal.
Figure 2 shows wireless mesh sensor network.
Figure 3 shows the node (14) signal is directed to master gateway (10) by determining the distance, d (51) and angle (50) .
Figure 4 shows the general process flow for wireless communication with master carrier signal.
Figure 5 shows the detailed process flow for wireless communication with master carrier signal with regards of gateways . Figure 6 shows the detailed process flow for wireless communication with master carrier signal with regards of wireless node.
Figure 7 shows wireless mesh network using master carrier signal for communication. Figure., 8 shows wireless node sending message to another destined node.
Detailed Description of the Preferred Embodiments
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those of ordinary skill in the art that the invention may be practiced without these specific details. In other instances, well-known methods, procedures and/or components have not been described in detail so as not to obscure the invention. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings .
This invention consists of a system for wireless communication by sending and receiving a master carrier signal in a wireless network. The system consists of at least one master gateway and one wireless node.
The master gateway will transmit the master carrier signal (20), periodic beacon and location information, and receive the combined data signal (22) with said master carrier signal (20) from a wireless node (14) in the network.
The wireless node will transmit the data signal (21) at the correct time and phase to combine (22) with said master carrier signal (20) and direct it to the desired destination.
The master gateway may or may not be connected to the backhaul. However, the master gateway should have high transmission power in order to cover the entire network and send beacon signal periodically. Since the master gateways (10) do not have any power supply limitations, they can do high power "transmissions in the network. The master gateway will be using any of the existing methods to discover its location. If there is more than one master gateway in the network, they will perform time synchronization between each other. The master gateways will periodically send beacon signals which will be used by the sensors to calculate the correct time and phase to send their signals.
The system will include the time and phase calculation module. This will enable the wireless note in the network to calculate the correct time and phase by using the location information of the desired destination. The wireless nodes will send their data signal at the right time and phase so that the data signal will be combined with the master carrier signal and sent to the desired destination at the correct angle. Therefore there will be no need for routing protocol in the network and then nodes can communicate with each other or with the master gateway without multi-hopping and routing.
The signal (21) from the node will be combined with the master carrier signal (20) from the master gateway to direct the signal (22) from the node to the master gateway or other destination nodes. In an array concept' the signal (22) is combined in the following fashion: sr = i0 + i1e^d£ose+a
Where I0 is the signal (20) from the master gateway (13) and Ii is the signal (21) from the node (14) . β is the is the wave number, i.e. 2ρϊ/λ where λ is the wavelength of the carrier frequency and d is the separation between the node (14) and Master gateway (13) antennas. Θ is the polar angle and a is the phase shift induced to control the direction. The direction of the beam is the angle at which the cosine of the phase term . given in the . revious equation - is maximized, ie. Ma {cos ( pdcose+c }
One of the methods to determine the distance, d (51) and the location of the Master Gateway is by using GPS coordinates of the Master Gateway (13) and node (14) . The required phase term a, can then be introduced by the sensor to ensure that the signal is directed to the Master Gateway (10) at angle φ (50) . Please refer to Figure 3 for details.
One of the advantages of this invention is to reduce the message overhead by eliminating the routing messages and multi hopping in the network. Besides that, the invention will reduce the computation overhead by eliminating the need for calculating the routes and processing the routing messages. Furthermore, the invention will reduce the memory overhead by eliminating the need for routing tables and buffering the messages from the neighbor nodes. The invention will be able to reduce the. power consumptions since the message, computation and memory overhead has been reduced. The invention will enable the nodes to communicate with any other node or master gateway in the network with low power transmission and. no need of routing and multi hopping. -
The general flowchart of this invention is shown in Figure 4. The gateway will carry out time synchronization with other gateway and the nodes. Then, the gateway will send beacon signal periodically (30) . The node will calculate the correct time to send the signal (21) after receiving the beacon signal from the gateway (31) . The signal (21) from the node will combine (22) with the master carrier signal (20) and will be directed to the desired destination.
The detailed process flowchart for the gateways of this invention is shown in Figure 5. The gateway will send time synchronization message to the other gateway and the nodes. Then the gateway will discover and advertise its location and the location data of the nodes in the network. The master gateway (10) starts to transmit master carrier signal (20) periodically in synchronous with other gateway (33) . The master gateway (10) will send beacon signal every T milliseconds (34.):. if the master gateway (10) is sending a message, it will set the sending time based on the active time of the nodes (14) and send the signal (36) . If not, the master gateway (10) will just receive the incoming signals. The detailed process flowchart for the wireless node of this invention is shown in Figure 6. The wireless node will synchronize its time with the gateway and will discover its location in the network and send the location data to the gateways. If the node is sending a message, the node will wait for receiving the beacon signal (37) and will calculate the right time and right phase to send the signal (3'8) . The node will send the signal (21) at the correct phase (39) . The signal (21) will combine (22) with the master carrier signal (20) and directed to the destination at the correct angle (40) . If the node is not sending a message, it will receive the incoming signals during the active time.
As will be readily apparent to those skilled in the art, the present invention may easily be produced in other specific forms without departing from its essential characteristics. The present embodiments is, therefore, to be considered as merely illustrative and not restrictive, the scope of the invention being indicated by the claims rather than the foregoing description, and all changes which come within therefore intended to be embraced therein.

Claims

Claims
1. A system for wireless communication by sending and receiving a master carrier signal in a wireless network, comprising :
at least one master gateway to transmit the master carrier signal (20) , periodic beacon or location information, and to receive the combined data signal (22) with said master carrier signal (20) from a wireless nodes (14) in the network; and
at least one wireless node to transmit the data signal (21) at the correct time and phase to combine (22) with said master carrier signal (20) and direct it to the desired destination.
2. The system for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 1, wherein said master gateway may or may not be connected to the backhaul .
3. The system for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 1, wherein the master gateway should have high transmission power in order to cover all the network and send beacon signal periodically.
4. The system for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 1, wherein the master gateway will be using any of the existing methods to discover its location.
5. The system for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 1, wherein the wireless node includes time and phase calculation module.
6. A method for wireless communication by sending and receiving a master carrier signal in a wireless network, said method comprising the steps of:
transmitting the master carrier signal (20), periodic beacon and location information by the master gateway (13) ;
receiving the combined data signal (22) with the master carrier signal (20) from the wireless nodes (14) in the network by the master gateway (13) ; and
transmitting the data signal (21) by the wireless node (14) at the correct time and phase to combine (22) with the master carrier signal (20) and direct it to the desired destination.
7. The method for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 6, wherein said step of transmitting the master carrier signal, periodic beacon" /and location information by the master gateway includes the step of sending a time synchronization message to any other master gateway if there is more than one master gateway in the network.
8. The method for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 6, wherein said step of transmitting the master carrier signal, periodic beacon and location information by the master gateway includes the step of sending time synchronization and master gateway location -message to the nodes in the network.
9. The method for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 6, wherein said step of transmitting the master carrier signal, periodic beacon and location information by the master gateway includes the step of transmitting the master carrier signal periodically in synchronous with the other master gateway if there is more than one master gateway in the network.
10. The method for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 6, wherein said step of transmitting the master carrier signal, periodic beacon and location information by the master gateway includes the step of sending a beacon signal periodically to the network for time and phase calculation for the wireless nodes in the network.
11. The method for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 9, wherein said step of sending a message from a wireless node (14) to the desired destination includes the step of receiving the beacon signal which is sent by the master gateway (13) .
12. The method for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 9, wherein said step of sending a message from a wireless node to the desired destination includes the step of calculating the right time and phase to send the message by using the distance value (51) and angle (50) from the desired destination and calculating the phase term.
13. The method for wireless communication by sending and receiving a master carrier signal in a wireless network as claimed in claim 9, wherein said step of sending a .message from a wireless node to the desired destination includes' the step of sending the message at the right time and phase to combine with the master . carrier signal and be directed to the desired destination and the correct angle (50) .
PCT/MY2013/000102 2012-06-15 2013-05-27 Method and system of wireless communication using master carrier signal WO2013187752A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2012002739A MY159123A (en) 2012-06-15 2012-06-15 Method and system of wireless communication using master carrier signal
MYPI2012002739 2012-06-15

Publications (1)

Publication Number Publication Date
WO2013187752A1 true WO2013187752A1 (en) 2013-12-19

Family

ID=48980245

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MY2013/000102 WO2013187752A1 (en) 2012-06-15 2013-05-27 Method and system of wireless communication using master carrier signal

Country Status (2)

Country Link
MY (1) MY159123A (en)
WO (1) WO2013187752A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018109565A3 (en) * 2016-10-30 2018-09-27 Chang Huei Meng Communication network with control plane network

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070223438A1 (en) * 2006-03-22 2007-09-27 Broadcom Corporation, A California Corporation Cell network using friendly relay communication exchanges
US7653394B2 (en) * 1999-05-28 2010-01-26 Afx Technology Group International, Inc. Node-to node messaging transceiver network with dynamic routing and configuring

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7653394B2 (en) * 1999-05-28 2010-01-26 Afx Technology Group International, Inc. Node-to node messaging transceiver network with dynamic routing and configuring
US20070223438A1 (en) * 2006-03-22 2007-09-27 Broadcom Corporation, A California Corporation Cell network using friendly relay communication exchanges

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018109565A3 (en) * 2016-10-30 2018-09-27 Chang Huei Meng Communication network with control plane network
US10298463B2 (en) * 2016-10-30 2019-05-21 Huei Meng Chang Communication network with control plane network
CN110024328A (en) * 2016-10-30 2019-07-16 张惠明 A kind of communication network with control planar network
GB2575910A (en) * 2016-10-30 2020-01-29 Meng Chang Huei Communication network with control plane network
GB2575910B (en) * 2016-10-30 2022-04-06 Meng Chang Huei Communication network with control plane network
CN110024328B (en) * 2016-10-30 2022-10-18 张惠明 Communication network with control plane network

Also Published As

Publication number Publication date
MY159123A (en) 2016-12-15

Similar Documents

Publication Publication Date Title
US10334549B2 (en) Wireless communication
US6707378B2 (en) Inter-vehicle wireless communication and warning system
US9066289B2 (en) Packet communication system, communication method and program
US10075892B2 (en) Mobile device for use in a dynamic and stochastic asynchronously updated wireless ad-hoc network
Dang et al. An efficient multi-channel MAC protocol for wireless ad hoc networks
CN109788542A (en) Ad hoc network channel access method, device, computer equipment and readable storage medium storing program for executing
US11765639B2 (en) Controlling tree topology over mesh topology based on autonomous decentralized control
US20230022225A1 (en) Methods and systems for managing reflecting surface
CN111343687B (en) Network data transmission method and device based on multi-relay cooperation and electronic equipment
KR101319553B1 (en) System for relaying data using single channel communications and method thereof
KR20100119402A (en) Apparatus and method for routing multi-path
WO2013187752A1 (en) Method and system of wireless communication using master carrier signal
EP1655895B1 (en) Radio communication method, radio communication terminal accommodating apparatus, and radio communication terminal
CN113574954A (en) Receiver-centric communication over combinational network technologies for enhanced reliability
KR101674182B1 (en) Broadcasting method in wireless sensor networks
KR20100093216A (en) Sensor node and method for controlling backoff range of wireless sensor network
JP5138538B2 (en) Route control method, wireless terminal, and program between interconnected wireless terminals
KR20180073894A (en) IoT Apparatus supporting various communication network and communication method thereof
Ababneh et al. Collision-free anycast transmission scheduling in UWSNs
Chen et al. Light Ad Hoc Network: A Solution to Hidden Terminal Problem
JP2024052156A (en) Relay communication device, communication method, and communication system
KR20090084535A (en) Sensor network system, mobile sensor node, schedule update method for mobile sensor node
EP2198650A1 (en) Routing of a communication in a wireless telecommunications network
Zhai et al. An improved ad hoc network communication based on cluster
Sun et al. Directional Transmission Based Optimization for the Hidden and Exposed Terminal Problems in Inter-vehicular Communications

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13748117

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13748117

Country of ref document: EP

Kind code of ref document: A1