Abstract: Characterizing transport protocol connections and controlling behavior of a communication network based on the characterizations, including obtaining transport protocol state information for transport protocol packets on a transport protocol connection; identifying request/response periods for the transport protocol connection based on the transport protocol state information, the identifying including identifying a beginning of a first request/response period based on the transport protocol state information for a first forward packet, and identifying an end of the first request/response period and a beginning of a second request/response period based on the transport protocol state information for a second forward packet; associating an application type with a server endpoint based on the identified request/response periods; and controlling behavior of the communication network based on the application type.

Abstract: A data stream processing device including a first tapped delay line which outputs data values received via a first data input on N first taps, wherein N is two or more; a second tapped data delay line which outputs data values received via a second data input on N second taps; a first processing unit including N first delayed data inputs and which generates a first data output based on the N first delayed data inputs; a second processing unit including N second delayed data inputs and which generates a second data output based on the N second delayed data inputs; and control circuitry including a mode selection input, and which is coupled to in response to the mode selection input receiving a signal indicating a first mode, simultaneously couple each of the first taps to a respective one of the first delayed data inputs and couple each of the second taps to a respective one of the second delayed data inputs, and in response to the mode select input not receiving a signal indicating the first mode, simultaneou

Abstract: Each of a first group of gateway nodes of a communications network operates as a primary gateway identified by a respective unique gateway identification number (GWID), and each of a second group of gateway nodes operates as a backup gateway. Each gateway node has an assigned backup priority level with respect to each GWID. The gateway nodes are interconnected via a common local network. In the event that a primary gateway node becomes non-operational, the backup gateway that is assigned the highest priority level with respect to the GWID of the non-operational primary gateway assumes operation as the primary gateway identified by that GWID. Upon restoration of the non-operational gateway node, the gateway node operates as a backup gateway in place of the gateway node that assumed its operation as the primary gateway. A gateway node operates as a primary gateway for only one respective GWID at a time.

Abstract: A method for providing service levels in a Radio Frequency (RF) network is disclosed. The method including: associating one or more service levels with each supported symbol rate, modulation and error correction encoded scheme (ModCod); assigning a subscriber service level for a RF transmitter; receiving a signal quality of a transmission by the RF transmitter; selecting a transmit ModCod from the supported ModCods, wherein the signal quality exceeds a threshold signal quality for the transmit ModCod; and authorizing the RF transmitter to transmit to the receiver when the subscriber service level is included in the one or more service levels associated with the transmit ModCod, wherein signal quality adapts to a signal fade.

Abstract: Modulation and coding for a high altitude platform is disclosed. An example apparatus includes a gateway antenna configured to communicate with a ground-based gateway station and user antennas configured to provide communication coverage among a plurality of terminals within a specified area on the ground or in the air. Each user antenna is configured to communicate with a cell within the specified area. The example apparatus also includes a processor configured to demodulate and decode a first modulation scheme and a first coding scheme used for a feeder link provided by the gateway antenna, and apply at least a second modulation scheme and a second coding scheme for user links provided in spot beams by the user antennas. The first modulation scheme and the first coding scheme are configured to be relatively more spectrally efficient compared to the second modulation scheme and the second coding scheme for the user links.

Abstract: A satellite terminal and a machine-implemented method are provided for encoding a burst header of a burst for transmission on an inroute. One component of a group of satellite terminal components consisting of an ASIC, a FPGA, and a DSP, generates a burst header having five information bits encoded therein. The five information bits may be encoded using a Reed-Muller code, a (32, 5) block code or a convolutional code having a code rate of either 1/5 or 1/10. The five information bits may represent one or more of a modulation type for a payload of the burst, a code rate for encoding the payload, a code type, and a spreading factor for spreading the payload during transmission. A satellite gateway and a machine-implemented method are also provided for decoding a burst header of a burst received on an inroute as described above.

Abstract: In a telecommunication system, a gateway receives a first burst packet and a second burst packet, both encoded with a unique word associated with a color, a value, and an associated time slot. The gateway associates the second burst packet to the first burst packet based on the color and value associated with the unique word used to encode the second burst packet and a received time slot at which the second burst packet is received. A terminal generates the burst packets by generating the first burst packet with a group header and the second burst packet without the group header, encoding the first burst packet and the second burst packet with the unique word, and transmitting the encoded first burst packet and the encoded second burst packet to the gateway.

Abstract: Disclosed methods include a resource manager in a multiple node network receiving a demand for additional bandwidth, from a terminal, and the resource manager having updated information on the state of the mobile node network and, using that the state information, performing test allocation of the requested bandwidth to the requesting terminal. Disclosed methods include determining whether previous commitments of service can be met with the test allocation in place. Associated with a positive result, an allocation is sent to the terminal.

Abstract: A system and method for providing communications with a Low Earth Orbit (LEO) satellite constellation using a non-omnidirectional antenna is disclosed. A system and method for determining blockages around a non-omnidirectional antenna for use with a Low Earth Orbit (LEO) constellation is disclosed. The method including: receiving System Information (SI) including ephemeris data for satellites in the LEO constellation; receiving a segment division that divides a ground about the antenna into segments; and determining a segment blocking information for the antenna.

Abstract: A monitoring tool to facilitate real-time system performance monitoring, fault detection, fault isolation, and fault remediation verification, wherein the monitoring tool is connected to each of a plurality of gateways within a network, including a request reporter module configured to record results of URL access requests from one or more end users, a processing module configured to calculate a set of metrics based on success and failure rates for each of the URL access requests recorded by the request reporter and distinguish between failures related to the network and failures unrelated to the network, and a consolidator module configured to organize and present the set of metrics into a format useable for monitoring the network.

Abstract: Methods and apparatuses for enhancing flatness of frequency response of couplings of radio frequency (RF) ports in an RF switch matrix. Techniques include determining a second RF port has been selected to be coupled to a first RF port via a coupling, obtaining an indication of a frequency or frequencies to be carried via the coupling, determining an amount of attenuation or amplification for the coupling for the frequency or frequencies, and adjusting attenuation or amplification applied to the coupling according to the determined amount attenuation or amplification.

Abstract: A communications terminal receives a data communications signal via a random access channel. A processor searches for data bursts in a first time-slot that include one of a first set of signature sequences assigned to the first time-slot. When a data burst A in the first time-slot includes one of the first set of signature sequences, the data burst A in the first time-slot is an initial burst of a message from a first communications terminal. The processor determines whether a second time-slot includes a data burst B that includes the one signature sequence. When the second time-slot includes the data burst B, the message is a multi-burst message and that the data burst B is a second burst of the multi-burst message. When the second time-slot does not include the data burst B the message is a single-burst message that has been completed via the first time-slot.

Abstract: Systems and methods are described for performing Layered Belief LDPC decoding on received Standard Belief LDPC encoded data bursts. In on implementation, a receiver: demodulates a signal, the demodulated signal including a noise corrupted signal derived from a codeword encoded using standard belief LDPC encoding; converts the noise corrupted signal derived from the standard belief LDPC encoded codeword to a noise corrupted signal derived from a layered belief LDPC encoded codeword; and decodes the noise corrupted signal derived from the layered belief LDPC encoded codeword using a layered belief LDPC decoder. In further implementations, systems are described for reducing collisions in Layered Belief LDPC decoders that occur when multiple parity checks need the same soft decision at the same time. In these implementations, elements in an original LBD decoder table are rearranged to increase the distance between elements specifying the same location in a RAM where soft decisions are stored.

Abstract: A telecommunication system includes a gateway receiver having a processor and a data storage medium. The receiver is programmed to wirelessly communicate with a plurality of terminals, determine an error rate associated with communication with the plurality of terminals, determine an operating probability from the error rate, and transmit the operating probability to the plurality of terminals. A terminal includes a transmitter programmed to transmit signals to the gateway receiver in accordance with a number of transmitting slots. The terminal has a receiver programmed to receive signals transmitted from the gateway receiver, including an operating probability signal representing the operating probability. The terminal also includes processor programmed to select the number of transmitting slots based at least in part on the operating probability.

Abstract: Methods and devices are provided. Devices asynchronously transmit, without diversity, bursts including information encoded using a low rate FEC code having a code rate no higher than ½. A terminal receives transmitted multiple overlapping bursts. The terminal detects and decodes bursts in a window of burst times, performs an iteration of an iterative interference cancellation process, and when at least one burst of at least a portion of the window remains incorrectly decoded, another iteration of the iterative cancellation process is performed as long as a maximum number of repeated iterations has not yet been performed. When all of the bursts in at least the portion of the window are correctly decoded, the window is advanced by an amount of burst time, at least the portion of the window is updated, and the iterations may be repeated. Correctly decoded bursts may be passed to a next process or device.

Abstract: A satellite communication system, a method and a system are provided. In one aspect of the invention, an outdoor unit power source is connected to a switch of a satellite modem of an indoor unit. When the satellite modem receives a first signal from a wireless device, a first switch control signal is sent to the switch to open a connection between the outdoor unit power source and an inter-facility link connected to an antenna of an outdoor unit, thereby preventing power from flowing through the inter-facility link. When the satellite modem receives a second signal from the wireless device, a second switch control signal is sent to the switch to close a connection between the outdoor unit power source and the inter-facility link, thereby causing the power to flow through the inter-facility link. Other wirelessly received signals may cause various control signals to be sent via the inter-facility link.

Abstract: Methods and systems for providing sourcing Internet access requests from ISP subscribers serviced by a gateway not physically located near the subscribers. As the localization needs of all subscribers are not necessarily the same, the gateway determines an appropriate source IP address to use to ensure that the IP protocol localization features work efficiently. In addition, the gateway can help enforce rules related to the governing law of the geographic area of the subscriber and/or rules based on the content providers licensing. Through determination of the context of a request, the gateway may also determine whether localized sourcing of a request is necessary based on the type of content being requested.

Abstract: An uplink power control system and a machine-implemented method for determining clear sky and adjusting uplink power are provided. A receiving station, which may be a satellite terminal or a satellite gateway, receives a reference signal from a satellite. The reference signal may be sampled over a sampling time period in order to compute a filtered short-term average downlink SINR. A filtered long-term average downlink SINR may be adjusted toward the filtered short-term average downlink SINR using either a first time constant or second time constant, based on a relationship between the filtered long-term average downlink SINR and the filtered short-term average downlink SINR. In some implementations, the second time constant is less than the first time constant.

Abstract: A method and system for distributive flow control and bandwidth management in networks is disclosed. The method includes: providing multiple Internet Protocol (IP) Gateways (IPGWs) that each have a maximum send rate and one or more sessions with associated throughput criteria, wherein each IPGW performs flow control by limiting information flows by the respective maximum send rate and throughput criteria; providing multiple Code Rate Organizers (CROs) that each have a bandwidth capacity, wherein each CRO performs bandwidth allocation of its respective bandwidth capacity to one or more IPGWs of the multiple IPGWs; interconnecting the multiple IPGWs with the multiple CROs; and performing bandwidth management across the multiple CROs and IPGWs. In the method, an IPGW of the multiple IPGWs provides flow control across a plurality of the CROs of the multiple CROs, and a CRO of the multiple CROs allocates bandwidth to a plurality of the IPGWs of the multiple IPGWs.

Abstract: A receiver determines whether an outbound carrier frequency among a plurality of outbound carrier frequencies, as received, includes interference. Based at least in part on a result of the determining, a new outbound carrier frequency is selected for the receiver. Optionally, the receiver sends an interference report to a system controller.