公开(公告)号：US10382992B2

公开(公告)日：2019-08-13

申请号：US14766044

申请日：2014-02-05

Applicant: IDAC HOLDINGS, INC.

Inventor： Onur Sahin ,  Arnab Roy ,  Yugeswar Deenoo ,  Ravikumar V. Pragada ,  Philip J. Pietraski ,  Joseph S. Levy ,  Tao Deng

IPC: H04W24/02 ,  H04W24/10 ,  H04W16/10 ,  H04W72/12 ,  H04W16/30 ,  H04B7/06 ,  H04W16/28 ,  H04W84/18

Abstract: Techniques may be used for interference measurement and management in directional mesh networks, including centralized and/or distributed approaches. A centralized node, such as an operations and maintenance (OAM) center, may use feedback from nodes in the mesh network to partition the nodes in the mesh network into clusters based on interference levels. Interference measurement reports may be used by the centralized node to update cluster membership. An initiating node in the mesh network may use topographical information to generate an initial interference cluster, and interference measurement frame (IMF) scheduling information may be used to schedule transmissions within the interference clusters. Techniques for opportunistic measurement campaigns, simultaneous measurement campaigns, link failure detection, and link re-acquisition in directional mesh networks may also be used.

公开(公告)号：US20190165890A1

公开(公告)日：2019-05-30

申请号：US16315234

申请日：2017-07-01

Applicant: IDAC Holdings, Inc.

Inventor： Philip J. Pietraski ,  Arnab Roy ,  Kyle Jung-Lin Pan ,  Alpaslan Demir ,  Muhammad U. Fazili ,  William E. Lawton ,  Mohamed Abou El Seoud ,  Kevin T. Wanuga ,  Ravikumar V. Pragada

IPC: H04L1/00 ,  H04B7/06 ,  H04L5/00 ,  H04W80/02 ,  H03M13/11 ,  H04L27/26

Abstract: Latency reduction by fast forward (FF) in multi-hop communication device and/or systems is disclosed. Packets may be received and forwarded using a codeword (CW)-based approach with and/or without per-CW CRC. A FF session may have a flow ID and packets may have sequence numbers. Packets targeted for FF may be divided into independently decodable CWs that may be transmitted in the next hop, for example, as soon as the destination is determined without waiting for an entire packet's arrival and/or for CRC verification. Low latency (e.g. FF) traffic may be indicated. CW-based FF may be extensible for an e2e RAN path from a WTRU to the last access node in a RAN. Intermediate metrics, a packet CRC and/or a per-CW CRC may be utilized for data integrity. HARQ and/or CW retransmission procedures may be implemented between network nodes for error handling.

公开(公告)号：US10187840B2

公开(公告)日：2019-01-22

申请号：US14766370

申请日：2014-02-06

Applicant: IDAC HOLDINGS, INC.

Inventor： Ravikumar V. Pragada ,  Yugeswar Deenoo ,  Onur Sahin ,  Arnab Roy ,  Philip J. Pietraski

IPC: H04W40/16 ,  H04W40/12 ,  H04W28/02 ,  H04W40/24 ,  H04W72/12 ,  H04W84/18

Abstract: A method and apparatus for joint routing and distributed scheduling in a directional mesh network includes receiving feedback for multiple candidate paths from at least one neighbor node, Semi-static and instantaneous metrics are determined based upon the received feedback. Routing from a first node to a destination node is determined based upon the semi-static and instantaneous metrics, and a transmission is routed in accordance with the determined route from the first node to the destination node.