CDMA-IA network concept of operations and media access control (MAC) layer

    公开(公告)号:US12040884B2

    公开(公告)日:2024-07-16

    申请号:US18116743

    申请日:2023-03-02

    摘要: The present disclosure describes the concept of operations and the medium access control protocols of a wireless communication system using code-division multiple access with interference avoidance (CDMA-IA) as its physical layer. The system can dynamically share a common band with other networks without a central radio resource controller. In one embodiment, the wireless communication system includes a plurality of radio nodes forming a wireless mesh network, wherein the pairs of radio nodes use, individually optimized, time division duplexing. At least one radio node includes a software-defined radio, a memory, and an electronic processor. The electronic processor is configured to control the software-defined radio to transmit a pilot signal and share various state information with the other nodes of the network. The shared information includes local spectrum occupancy and node connectivity sets. The pervasive sharing of spectrum occupancy among all nodes enables the usage of the shared band to be maximized.

    CDMA-IA NETWORK CONCEPT OF OPERATIONS AND MEDIA ACCESS CONTROL (MAC) LAYER

    公开(公告)号:US20230283393A1

    公开(公告)日:2023-09-07

    申请号:US18116743

    申请日:2023-03-02

    摘要: The present disclosure describes the concept of operations and the medium access control protocols of a wireless communication system using code-division multiple access with interference avoidance (CDMA-IA) as its physical layer. The system can dynamically share a common band with other networks without a central radio resource controller. In one embodiment, the wireless communication system includes a plurality of radio nodes forming a wireless mesh network, wherein the pairs of radio nodes use, individually optimized, time division duplexing. At least one radio node includes a software-defined radio, a memory, and an electronic processor. The electronic processor is configured to control the software-defined radio to transmit a pilot signal and share various state information with the other nodes of the network. The shared information includes local spectrum occupancy and node connectivity sets. The pervasive sharing of spectrum occupancy among all nodes enables the usage of the shared band to be maximized.

    CDMA-IA network concept of operations and media access control (MAC) layer

    公开(公告)号:US11601212B2

    公开(公告)日:2023-03-07

    申请号:US17180079

    申请日:2021-02-19

    摘要: The present disclosure describes the concept of operations and the medium access control protocols of a wireless communication system using code-division multiple access with interference avoidance (CDMA-IA) as its physical layer. The system can dynamically share a common band with other networks without a central radio resource controller. In one embodiment, the wireless communication system includes a plurality of radio nodes forming a wireless mesh network, wherein the pairs of radio nodes use, individually optimized, time division duplexing. At least one radio node includes a software-defined radio, a memory, and an electronic processor. The electronic processor is configured to control the software-defined radio to transmit a pilot signal and share various state information with the other nodes of the network. The shared information includes local spectrum occupancy and node connectivity sets. The pervasive sharing of spectrum occupancy among all nodes enables the usage of the shared band to be maximized.

    Single Frequency Network (SFN) for Broadcast/Multicast application on a Spotbeam Satellite

    公开(公告)号:US20220038171A1

    公开(公告)日:2022-02-03

    申请号:US17387017

    申请日:2021-07-28

    IPC分类号: H04B7/185

    摘要: Systems and methods operating a spotbeam satellite network to provide single frequency network broadcast and multicast services. One example embodiment provides a satellite broadcast system. The system includes an electronic processor communicatively coupled to a satellite and a user equipment. The electronic processor is configured to receive a plurality of bearer signals, each bearing identical broadcast program information. The electronic processor is configured to, for each of the plurality of bearer signals, generate one of a plurality of spotbeams for transmission by the satellite within a coverage area. The user equipment is configured to receive the bearer signals from a plurality of adjacent spotbeams of the plurality of spotbeams. The user equipment is configured to constructively utilize the bearer signals received from the plurality of adjacent spotbeams to decode the program information.

    Devices, methods, and systems for uplink synchronization in time division multiple access (TDMA) satellite network

    公开(公告)号:US10985835B2

    公开(公告)日:2021-04-20

    申请号:US16405369

    申请日:2019-05-07

    IPC分类号: H04B7/212 H04B7/185

    摘要: Devices, methods, and systems for uplink synchronization in time division multiple access (TDMA) satellite network. In one embodiment, an earth-based satellite terminal is configured to communicate with a satellite hub through a satellite using the TDMA communication protocol. The earth-based satellite terminal is configured to determine its own location, a location of the satellite, estimate a distance between the location of the terminal and the location of the satellite, determine a Coarse Timing Advance based on the distance that is estimated, and transmit data to the satellite based on the Coarse Timing Advance and the TDMA communication protocol. The Coarse Timing Advance may allow uplink TDMA communication without a preamble transmission on a random access channel, the preamble transmission being required in many conventional systems.

    Multi-path TCP over dual networks

    公开(公告)号:US10735989B2

    公开(公告)日:2020-08-04

    申请号:US15998431

    申请日:2018-08-16

    摘要: Systems and methods for simultaneous multi-path TCP data flows over a plurality of transport paths, such as satellite and terrestrial networks. One system enables the plurality of paths to be used for increasing the end-to-end transport reliability or throughput of the network, depending on the prevailing reliabilities of the paths. One method includes determining, with a first electronic processor, a first reliability for a first network path configured to carry a first data stream, and a second reliability for a second network path configured to carry a second data stream. The method includes transmitting the first and second reliabilities to a second electronic processor. The method includes receiving a selected mode based on the first and second reliabilities, said mode indicating whether the plurality of paths are being used to enhance reliability or throughput. The method includes receiving the first and second data streams, and processing the first and second data streams based on the selected mode. The method includes determining the relative delays between the plurality of paths and equalizing the delays through buffering, which may be performed either at the transmitter, the receiver or both.

    Application service virtual circuit

    公开(公告)号:US10708188B2

    公开(公告)日:2020-07-07

    申请号:US16264004

    申请日:2019-01-31

    摘要: Systems and methods for exchanging data over a network are described. One method includes receiving, from a computing device via a physical network port, a request to forward network traffic, the request including a network domain identifier and a user identifier. The method includes retrieving, from a database storing user information, a user profile based on the user identifier. The method includes determining whether the traffic forwarding request is valid based on the user profile. The method includes, when the traffic forwarding request is valid, provisioning, on the network, an application service virtual circuit between a local virtual port of a communication interface coupled to the electronic processor and a peer port at a remote communication endpoint. The method includes forwarding the network traffic from the computing device to the remote communication end point via the application service virtual circuit.

    Wireless communication systems with code-division multiple access and interference avoidance

    公开(公告)号:US10666316B2

    公开(公告)日:2020-05-26

    申请号:US16206606

    申请日:2018-11-30

    发明人: Gary Churan

    摘要: The present disclosure includes wireless communication systems with code-division multiple access with interference avoidance (CDMA-IA). In one embodiment, the wireless communication system includes a plurality of transmitters and a plurality of receivers. At least one transmitter of the plurality of transmitters is configured to detect unoccupied segments of spectrum occupancy of interference at one of the plurality of receivers, and spread power of a transmitted signal non-uniformly across a channel bandwidth that is much wider than an information bandwidth of the transmitted signal using a plurality of non-contiguous spectral segments that correspond to the unoccupied segments of the spectrum occupancy of the interference at the one of the plurality of receivers. At least one receiver of the plurality of receivers is configured to perform a demodulation process by coherently integrating the power of the transmitted signal over the plurality of non-contiguous spectral segments.

    Communicating with unmanned aerial vehicles and air traffic control

    公开(公告)号:US10531505B2

    公开(公告)日:2020-01-07

    申请号:US15954001

    申请日:2018-04-16

    发明人: Michael Gagne

    摘要: The present disclosure includes devices, systems, and methods for communicating with unmanned aerial vehicles. In one embodiment, the present disclosure includes a server including a communication interface, a memory, and an electronic processor communicatively connected to the memory. The electronic processor is configured to communicate with one or more unmanned aerial vehicles via the communication interface and a satellite network, communicate with the one or more unmanned aerial vehicles via the communication interface and a terrestrial network, and communicate with the one or more unmanned aerial vehicles via the communication interface and a combination of the satellite network and the terrestrial network.

    Frequency division duplex (FDD) return link transmit diversity systems, methods and devices using forward link side information

    公开(公告)号:US10110288B2

    公开(公告)日:2018-10-23

    申请号:US12720189

    申请日:2010-03-09

    申请人: Santanu Dutta

    发明人: Santanu Dutta

    IPC分类号: H04B7/06 H04B7/08

    摘要: A Frequency Division Duplex (FDD) wireless terminal includes spaced-apart antennas that are configured to transmit over a return link and to receive over a forward link that is spaced apart from the return link in frequency. The FDD wireless terminal is configured to selectively refrain from transmitting over the return link from at least one of the spaced-apart antennas of the FDD wireless terminal in response to differentials in forward link power that is received at the spaced-apart antennas of the FDD wireless terminal, that are caused, for example, by blocking appendages of a user of the wireless terminal. Related methods are also described.