Patents Assigned to TTI Inventions D LLC
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Patent number: 9107131Abstract: A system and method is provided to manage wireless network mobility and wireless network resources. In one aspect of the invention, network equipment acquires samples associated with time that past user devices stayed in the coverage range of the network equipment and estimates a time that a user device currently stays in the cell based on the acquired samples. In another aspect, pre-authentication and pre-registration of the user device in another network are performed based on the estimated time. In yet another aspect, network resources reserved for the user device are released based on the estimated time.Type: GrantFiled: December 10, 2009Date of Patent: August 11, 2015Assignee: TTI Inventions D LLCInventors: Jyh-Cheng Chen, Tao Zhang, Zong-Hua Liu
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Patent number: 9088889Abstract: A method and system for managing awareness information relating to a mobile device's visibility with respect to other buddy devices, the system comprising; the mobile device, a mobile application listing one or more buddies, an application listener which tracks the one or more buddies zoom operations and radar zoom factors, and a server, the server comprising an encounter manager, an approach manager and a notification marshalling system.Type: GrantFiled: April 5, 2013Date of Patent: July 21, 2015Assignee: TTI Inventions D LLCInventors: Shoshana K. Loeb, Benjamin Falchuk
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Patent number: 8761175Abstract: An inventive method for data delivery in a multi-hop vehicular network with multiple vehicles and intersections is presented. The method comprises, at each source vehicle, initiating packet flow, labeling packets with destination coordinates and a current location, and forwarding the packet flow, and at each intersection, selecting a header vehicle, computing a backlog indicator and listening for broadcasts with a matrix and delay information, updating the matrix in accordance with the backlog indicator if the matrix is present, otherwise initializing the matrix, forwarding the packet flow, and broadcasting the matrix from the header vehicle. In one embodiment, selection of the header vehicle is performed based on random countdown and vehicle ID. The method converges to the optimal (lowest latency) state irrespective of the initial starting point of the network and continues to tend towards the optimal state even as the network conditions alter.Type: GrantFiled: March 20, 2009Date of Patent: June 24, 2014Assignee: TTI Inventions D LLCInventors: Ratul K. Guha, Wai Chen, Stephanie Demers, Jasmine Chennikara-Varghese
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Patent number: 8707044Abstract: A system and method for using networked mobile devices in a vehicle in a tightly integrated manner is presented. The vehicle has an OBE, a mobile device client, and vehicle components, and the mobile device has a mobile device proxy and applications, such that the mobile device client and the mobile device proxy communicate, enabling dynamic transfer of the applications to the OBE and execution of the applications on the mobile device and the OBE using the plurality of vehicle components at runtime. In one embodiment, the mobile device client and the mobile device proxy authenticate each other. The authentication can be performed using digital certificates. The mobile device client can communicate the vehicle components on the vehicle to the mobile device proxy. The mobile device client and the mobile device proxy can communicate using Bluetooth. The vehicle components can include dashboard displays, speakers, and voice I/O systems.Type: GrantFiled: August 11, 2009Date of Patent: April 22, 2014Assignee: TTI Inventions D LLCInventors: Hyong Shim, Stanley Pietrowicz, Tao Zhang, John R. Wullert, II
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Patent number: 8630224Abstract: Disclosed is an improved proactive location based routing protocol for ad-hoc wireless networks. When a source node has a data packet to send to a destination node, the source node calculates an estimated future location of the destination node prior to forwarding a data packet to the destination node. The estimated future location may be based on the last known location, velocity and bearing of the destination node, as well as upon the estimated propagation delay (i.e., the estimated time it will take the data packet to reach the destination node after being transmitted by the source node). The source node routes the data packet by identifying which one of a plurality of its neighbor nodes is closest to the estimated future location of the destination node, and routes the data packet the identified neighbor node as an intermediate node along the route from the source node to the destination node. Further, the frequency of flooding broadcasts is based on the velocity of the network nodes.Type: GrantFiled: January 31, 2005Date of Patent: January 14, 2014Assignee: TTI Inventions D LLCInventors: Yibei Ling, Chung-Min Chen, Wai Chen, Russell Hsing
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Patent number: 8514707Abstract: A method for controlling network access comprises receiving a request to allow a communication flow over a network and temporarily allowing the communication flow over the network before a response to the request is transmitted. Further, the availability of one or more network resources may be determined and compared with resources required for the requested communication flow. Priority of the communication flow may also be determined, and the temporarily allowed communication flow may be responded to based on the available resources, the requested resources, and the priority.Type: GrantFiled: December 28, 2009Date of Patent: August 20, 2013Assignee: TTI Inventions D LLCInventors: D. Scott Alexander, Ravichander Vaidyanathan, Balakrishnan Dasarathy, Mark W. Garrett, Shrirang Gadgil
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Patent number: 8509166Abstract: A resource scheduling and power allocation technique is provided for a LTE radio network integrated with femtocells. The technique utilizes a tri-phase approach that includes a stochastic geometric model of an exemplary radio network that generates a channel attenuation matrix for each channel at each PRB. A resource scheduling and power allocation procedure determines a near optimal assignment of mobile user to PRBs based on the channel attenuations, potential data rates, and transmit power subject to maximizing the data rates in accordance with a fairness objective. A discrete-event simulation procedure simulates the end-to-end transmission of the data packets in a packet-switch network in accordance with the assignments to analyze the behavior of the overall network.Type: GrantFiled: January 28, 2010Date of Patent: August 13, 2013Assignee: TTI Inventions D LLCInventors: Kenneth J. Kerpez, Tian Lan, Kaustubh Sinkar, Latha Kant
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Patent number: 8417262Abstract: A method and system for managing awareness information relating to a mobile device's visibility with respect to other buddy devices, the system comprising; the mobile device, a mobile application listing one or more buddies, an application listener which tracks the one or more buddies zoom operations and radar zoom factors, and a server, the server comprising an encounter manager, an approach manager and a notification marshalling system.Type: GrantFiled: November 13, 2009Date of Patent: April 9, 2013Assignee: TTI Inventions D LLCInventors: Shoshana K. Loeb, Benjamin Falchuk
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Patent number: 8340206Abstract: An adaptive wireless multiple-input multiple-output (MIMO) system switches among two or more modes of operation including Uninformed Transmitter (UT) and Informed Transmitter (IT) modes based on channel conditions as reflected in a set of metrics including a temporal selectivity metric (TSM) indicative of the temporal dynamics of the MIMO channel. In an exemplary embodiment, the adaptive MIMO system uses a dominant eigenmode IT mode of operation if a signal-to-noise ratio is below a threshold, otherwise, the system uses an IT mode or a UT mode based on the TSM. If the TSM indicates a channel that is changing too rapidly for feedback to be effective, the UT mode is used, otherwise the IT mode is used. Overall system capacity in time varying MIMO channels is thereby improved.Type: GrantFiled: January 21, 2010Date of Patent: December 25, 2012Assignee: TTI Inventions D LLCInventors: Carol C. Martin, John C. Koshy, Joseph C. Liberti, Anthony A. Triolo