Patents by Inventor Jianlin Guo

Jianlin Guo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8737455
    Abstract: A network includes a transmitter and a receiver, wherein the transmitter includes a set of transmit antennas and the receiver includes a set of receive antennas. The transmitter duplicates a packet as copies of the packet, and selects subsets of the set of transmit antennas independent of channel characteristics between the subsets of transmit antennas and the set of receive antennas, wherein combinations of the antennas in the subsets of the transmit antennas are different. The receiver selects subsets of the set of receive antennas independent of channel characteristics between the subsets of receive antennas and the set of transmit antennas, wherein combinations of the antennas in the subsets of the receive antennas are different. The selected subsets are used to transmit the packet, and retransmit the packet in case of a failure in a previous transmission.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: May 27, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Raymond Yim, Jianlin Guo, Philip Orlik, Jinyun Zhang
  • Patent number: 8654711
    Abstract: An operation channel in a multi-hop network is determined. The network uses a set of channels, and one of the nodes is a network management node. The operation channel is selected in the network management node. Then, the network management node broadcasts a channel information packet including the operation channel using all channels. The channel information packet is received in each of other nodes, either directly from the network management node or from an intermediate node that received and rebroadcasted the channel information packet. Lastly, the operation channel in each node is set according to the channel information packet until the network is formed.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: February 18, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Jianlin Guo, Philip Orlik, Jinyun Zhang, Ghulam M Bhatti
  • Patent number: 8571003
    Abstract: A method for transmitting information in a communication network of multiple nodes, in which information transmission is partitioned into successive superframes, and in which each superframe is partitioned into a beacon period followed by a data period, which may consist of a contention free period (CFP), and each beacon period and CFP of the data period is partitioned into timeslots. The method includes allocating to at least a first node of the multiple nodes a designated timeslot in which to transmit data in at least one of a plurality of superframes, and allocating to at least a second node of the multiple nodes the same designated timeslot in which to transmit information during at least one subsequent superframe.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: October 29, 2013
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Jianlin Guo, Chunjie Duan, Ghulam M. Bhatti, Jinyun Zhang
  • Patent number: 8565214
    Abstract: A hybrid communication network for a transportation safety system includes a fixed wired nodes and mobile wireless nodes. Because the wired nodes operate independently packets transmitted by the wired nodes to the wireless nodes need to be synchronized. A downlink travel time for downlink packets traveling from a controller to the wireless nodes is determined. Then, the controller schedules downlink data intervals (DDI) based on the downlink travel time; and transmits downlink packets to the wireless nodes during the DDI, such that a latency requirement of the transportation safety system is satisfied.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: October 22, 2013
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Jianlin Guo, Raymond Yim, Jinyun Zhang, Philip V. Orlik, Chunjie Duan, Frederick J Igo, Jr.
  • Publication number: 20130262648
    Abstract: Packets are transmitted by a server to mobile nodes in a coverage area of a wireless network using a coverage and reliability map, which indicates qualities and reliabilities of links between the server and the nodes. When a new packet is received in the server, the server transmits the packet if a current load of the packets including the new packet is less than a peak load constraint. Otherwise, the new packet is delayed for one time slot. Packets are transmitted according to associated priorities.
    Type: Application
    Filed: February 5, 2013
    Publication date: October 3, 2013
    Applicant: MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC.
    Inventors: Philip Orlik, Ke Xu, Jianlin Guo
  • Publication number: 20130223334
    Abstract: An operation channel in a multi-hop network is determined. The network uses a set of channels, and one of the nodes is a network management node. The operation channel is selected in the network management node. Then, the network management node broadcasts a channel information packet including the operation channel using all channels. The channel information packet is received in each of other nodes, either directly from the network management node or from an intermediate node that received and rebroadcasted the channel information packet. Lastly, the operation channel in each node is set according to the channel information packet until the network is formed.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 29, 2013
    Inventors: Jianlin Guo, Philip Orlik, Jinyun Zhang, Ghulam M. Bhatti
  • Publication number: 20130208583
    Abstract: Broken links in a sensor network are avoided by representing the network as a DODAG. A rank associated with each node defines a position of each node relative to other nodes, and the rank is in a form of a proper fraction, and the rank of each node never increases to enable loop-free routing.
    Type: Application
    Filed: February 11, 2012
    Publication date: August 15, 2013
    Inventors: Jianlin Guo, Chuan Han, Ghulam M. Bhatti, Philip Orlik, Jinyun Zhang
  • Patent number: 8509109
    Abstract: A set of routes are discovered in a network including concentrators, smart meters and an imaginary node. Each concentrator node, a source, broadcasts a route request (RREQ) packet to the imaginary destination node. Intermediate nodes store a route as a node list (NL) in the RREQ packet and as a route table (RT) in the node. Then, each smart meter node can select a primary route and a secondary route from the smart meter node to any concentrator from the route table.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: August 13, 2013
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Jianlin Guo, Ghulam M Bhatti, Philip Orlik, Jinyun Zhang
  • Patent number: 8452310
    Abstract: A coverage map for a wireless network is generated. The network includes a server communicating with clients in a coverage area. The clients are mobile devices. At the server, location and reliability information from each client is received. The server then constructs and maintains the coverage map according to the location and reliability information. The coverage map is used to deliver telematic information from the server to the clients in response to requests by the clients.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: May 28, 2013
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Philip Orlik, Jianlin Guo, Yukimasa Nagai
  • Publication number: 20130119770
    Abstract: A network for managing distributed resources (DRs) is connected to an electric power system (EPS). The network includes a set of controllers, and multiple sets of the DRs, wherein each controller is connected to one of the sets of the DRs by a personal area network (PAN). A management system connects the EPS and the set of controllers by a wide area network (WAN). The EPS generates commands for selected DRs to take actions, the commands are routed to the selected DRs via the WAN and PANs.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 16, 2013
    Inventor: Jianlin Guo
  • Patent number: 8418813
    Abstract: In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: April 16, 2013
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Raymond Yim, Philip V. Orlik, Chunjie Duan, Jinyun Zhang, Jianlin Guo, Frederick J Igo, Jr.
  • Publication number: 20120327792
    Abstract: A set of routes are discovered in a network including concentrators, smart meters and an imaginary node. Each concentrator node, a source, broadcasts a route request (RREQ) packet to the imaginary destination node. Intermediate nodes store a route as a node list (NL) in the RREQ packet and as a route table (RT) in the node. Then, each smart meter node can select a primary route and a secondary route from the smart meter node to any concentrator from the route table.
    Type: Application
    Filed: June 27, 2011
    Publication date: December 27, 2012
    Inventors: Jianlin Guo, Ghulam M. Bhatti, Philip Orlik, Jinyun Zhang
  • Patent number: 8315205
    Abstract: A wireless network with a star topology has a first and second central node. The first central node starts up first and initiates the network. The second central node starts up second and synchronizes to the first central node, and wherein one node is in active mode and the other node is in standby mode, and a set of leaf nodes configured to communicate only with the active node.
    Type: Grant
    Filed: January 3, 2010
    Date of Patent: November 20, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Chunjie Duan, Jianlin Guo, Zhifeng Tao
  • Publication number: 20120163486
    Abstract: A network includes a transmitter and a receiver, wherein the transmitter includes a set of transmit antennas and the receiver includes a set of receive antennas. The transmitter duplicates a packet as copies of the packet, and selects subsets of the set of transmit antennas independent of channel characteristics between the subsets of transmit antennas and the set of receive antennas, wherein combinations of the antennas in the subsets of the transmit antennas are different. The receiver selects subsets of the set of receive antennas independent of channel characteristics between the subsets of receive antennas and the set of transmit antennas, wherein combinations of the antennas in the subsets of the receive antennas are different. The selected subsets are used to transmit the packet, and retransmit the packet in case of a failure in a previous transmission.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 28, 2012
    Inventors: Raymond Yim, Jianlin Guo, Philip Orlik, Jinyun Zhang
  • Publication number: 20120147864
    Abstract: A hybrid communication network for a transportation safety system includes a wired network including a set of fixed nodes. Each fixed node includes a wired interface for connecting the fixed node to the wired network and at least one wireless interface. The set of fixed nodes further includes a head node at a first end of the wired network connected to a controller, a terminal node at a second end of the wired network, and a set of relay nodes arranged between the head node and the terminal node. A wireless network includes a set of mobile nodes and a set of fixed nodes connected to the wired network. Each mobile node includes at least one of the wireless interfaces, and each mobile node is arranged in a moveable car.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 14, 2012
    Inventors: Jianlin Guo, Raymond Yim, Philip V. Orlik, Frederick J. Igo, JR., Chunjie Duan, Jinyun Zhang
  • Publication number: 20120147879
    Abstract: A hybrid communication network for a transportation safety system includes a fixed wired nodes and mobile wireless nodes. Because the wired nodes operate independently packets transmitted by the wired nodes to the wireless nodes need to be synchronized. A downlink travel time for downlink packets traveling from a controller to the wireless nodes is determined. Then, the controller schedules downlink data intervals (DDI) based on the downlink travel time; and transmits downlink packets to the wireless nodes during the DDI, such that a latency requirement of the transportation safety system is satisfied.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 14, 2012
    Inventors: Jianlin Guo, Raymond Yim, Jinyun Zhang, Philip V. Orlik, Chunjie Duan, Frederick J. Igo, JR.
  • Publication number: 20120129458
    Abstract: In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 24, 2012
    Inventors: Raymond Yim, Philip V. Orlik, Chunjie Duan, Jinyun Zhang, Jianlin Guo, Frederick J. Igo, JR.
  • Patent number: 8155044
    Abstract: A method and system broadcasts an alert packet in a wireless multi-hop network of nodes. An event is sensed in a source node of the network, and an alert packet is broadcast in response to sensing the event. The alert packet is received in a set of candidate nodes within a broadcast range of the source node. Each candidate node infers a distance between the candidate node and the source node based on a receive power of the received alert packet, and determines a priority for rebroadcasting the alert packet, wherein the priority is based on the distance to minimizing a probability of collisions while rebroadcasting the alert packet and extend a range of the rebroadcasting.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: April 10, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Raymond Yim, Jianlin Guo, Philip V. Orlik
  • Patent number: 8094621
    Abstract: A method performs handover of a mobile station (MS from a current base station (BSC) connected to a target base station (BST) via a backbone in a Worldwide interoperability for Microwave Access (WiMAX) mobile communication network. The MS, before handover, transmits a Connection Identifier Request (CID-REQ) to the BST via the BSC, and receiving a Connection Identifier Response (CID-RSP) from the BST via the BSC. The MS, before handover, transmits a Subscriber Station (SS) Basic Capability Request (SBC-REQ), and receives a SS Basic Capability Response (SBC-RSP) from the BST via the BSC. Then, the MS transmits a Ranging Request (RNG-REQ) to the BST, and receives a Ranging Response (RNG-RSP) from the BST. During the handover, the MS transmits a Registration Request (REG-REQ) to the BST, and receives a Registration Response from the BST to establish the connection between the MS and the BST.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: January 10, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Jianlin Guo, Raymond Yim, Jinyun Zhang
  • Publication number: 20110176416
    Abstract: Multiple routes from a data source node to multiple data destination nodes in a large scale multi-hop mesh network are discovered. Nodes discover multiple routes to two destinations in an initial discovery phase that includes only two network-wide flooding of packets. The method can also work with one destination. The method can be extended to include more destinations with a proportional increase in the communication overhead. After the completion of the discovery phase, nodes can communicate or forward their own or received data by using any of the available routes.
    Type: Application
    Filed: March 31, 2011
    Publication date: July 21, 2011
    Inventors: Ghulam M. Bhatti, Jianlin Guo, Jinyun Zhang, Koon Hoo Teo