Patent application number | Description | Published |
20090028187 | Upstream adaptive modulation in a communications system - A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly. | 01-29-2009 |
20100074167 | Downstream Time Domain Based Adaptive Modulation for DOCSIS Based Applications - In a DOCSIS based satellite gateway data is transmitted over a single downstream channel, at different throughput rates. Data destined for each subscriber/receiver is assigned a throughput rate depending upon the downstream signal quality of that subscriber/receiver. To accomplish this, the downstream DOCSIS MAC data is parsed to extract DOCSIS packets. The DOCSIS packets are then loaded into packet queues based on an identifier within such packets such as the MAC destination address or SID. Each of the queues represents a bandwidth efficiency or throughput rate that can be currently tolerated by specific subscribers based on the current signal quality being experienced at the subscriber location. A PHY-MAP describing the downstream data structure to be transmitted and inserted into the downstream data. Data is extracted from the packet queues in queue blocks as defined by the PHY-MAP. The queue blocks are modulated with transmission parameters appropriate for each queue block and transmitted to the DOCSIS based satellite modems. The satellite modems extract the PHY-MAP from the downstream data and use the information contained in it to demodulate and decode the queue for which they have sufficient downstream signal quality. Satellite modems measure and transmit downstream signal quality to the satellite gateway to be used to assigned traffic to the appropriate queues. | 03-25-2010 |
20100142437 | Method and System for Adaptive Modulation Scheduling - Provided is a method and system for transmitting MPEG frames between a DOCSIS based satellite modem termination system (SMTS) and a corresponding satellite modem (SM) system. The method includes identifying at least one data stream requiring transmission between the SMTS and the SM, the data stream including one or more MPEG frames. Next, the MPEG frames are organized within SMTS data queues based upon predetermined parameters and then transmitted based upon their organization within the data queues. | 06-10-2010 |
20100198974 | Modified Range Requests Enabling Bandwidth Requests and State of Health Reporting - A modified ranging request in a broadband communications system. The modified ranging request includes a header, a management message header attached to the header, a management message payload attached to the management message header, and a CRC attached to the management message payload. The management message header enables bandwidth requests to be made by subscriber equipment without contention. The management message header also includes state of health information on the status of a downstream transmission for enabling a central location to determine how to assign subscribers to queues in an adaptive modulation scheme. | 08-05-2010 |
20100262895 | Turbo-Coding DOCSIS Information for Satellite Communications - Methods and systems for modifying DOCSIS-based transmission paths for communication in higher frequency and/or wireless environments, such as wireless terrestrial communication systems and satellite communication systems. An inner turbo-code is combined with a DOCSIS based Reed-Solomon (“RS”) forward error correction (“FEC”) coding scheme, to produce a concatenated turbo-RS code (other FEC codes can be utilized). In phase and quadrature phase (“I-Q”) processing is utilized to enable relatively low cost up-converter implementations. The I-Q processing is preferably performed at baseband, essentially pre-compensating for analog variations in the transmit path. Power amplifier on/off control capable of controlling on/off RF power control of remote transmitters is modulated on a transmit cable to reduce the need for a separate cable. | 10-14-2010 |
20100278098 | High Speed Data Service Via Satellite Modem Termination System and Satellite Modems - A satellite communication system includes a satellite earth station operably coupled to a data network, and a plurality of satellite modems, each satellite modem of the plurality of satellite modems communicating in an upstream and downstream data communication mode with the satellite earth station via at least one servicing satellite. The satellite earth station includes a host processor for receiving data packets from the data network and processing DOCSIS management packets, a DOCSIS MAC coupled to the host processor for encrypting the transmit packet data from the host memory, framing data in MAC headers and inserting MAC timestamps in the transmit packet data, a satellite modulator coupled to the DOCSIS MAC for modulating the encrypted transmit packet data to generate downstream output data for transmission to at least one of the plurality of satellite modems, a burst demodulator for demodulating upstream data received from at least one of the plurality of satellite modems, and a turbo decoder coupled to the burst demodulator and the DOCSIS MAC for turbo decoding the demodulated data from the burst demodulator and sending the decoded data to the DOCSIS MAC. The DOCSIS MAC sends DOCSIS management packets portion of the decoded data to the host processor and sends transmit packet data portion of the decoded data to the data network. | 11-04-2010 |
20110274151 | Upstream Adaptive Modulation in a Communications System - A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly. | 11-10-2011 |
20130265870 | DOWNSTREAM TIME DOMAIN BASED ADAPTIVE MODULATION FOR DOCSIS BASED APPLICATIONS - In a satellite gateway, data is transmitted over a downstream channel at different throughput rates. Data destined for each subscriber/receiver is assigned a throughput rate depending upon the downstream signal quality of that subscriber/receiver. The downstream data is parsed to extract data packets. The data packets are then loaded into packet queues based on an identifier within such packets. The queues represent a bandwidth efficiency or throughput rate that can be currently tolerated by specific subscribers that may also be based on the current signal quality at a subscriber location. The parsed data traffic is processed based on the profile of the plurality of profiles to produce processed data traffic, and transmitted from the packet queues over a downstream channel. | 10-10-2013 |
Patent application number | Description | Published |
20090081291 | Sustained Release Dosage Forms For Delivery of Agents to an Oral Cavity of a User - Aspects of the invention include a sustained release dosage form that can be administered to an oral cavity, e.g., the mouth. In certain embodiments, the sustained release dosage form is formulated as a lozenge or gum that may be administered to an oral cavity of a user for the purpose of dissolving over a prolonged period of time and thereby delivering an essential oil component therein. In certain embodiments, the sustained release dosage form includes a beneficial agent and, therefore, not only provides for the prolonged delivery of an essential oil component to an oral cavity, but also provides for the sustained release of a beneficial agent thereto. In certain embodiments, the sustained release dosage form includes a biocompatible, water-insoluble polymer, e.g., ethylcellulose and an essential oil component, which are combined in such a manner so as to produce a dosage form that substantially dissolves over a prolonged period of time when positioned within an aqueous environment, such as an oral cavity of a user. In certain embodiments, the sustained release dosage form may include an additional water soluble agent, such as gum arabic, which may be included so as to further provide the dosage form with a desired dissolution characteristic. In certain embodiments, the dosage form may also include a beneficial agent to be delivered to the mouth. Methods of formulating such dosage forms and administering them to an oral cavity for the treatment of an adverse condition are also provided herein. | 03-26-2009 |
20090081294 | Sustained release dosage form for lubricating an oral cavity - Aspects of the invention include a sustained release dosage form that can be administered to an oral cavity, e.g., the mouth. In certain embodiments, the sustained release dosage form is formulated as a lozenge or gum that may be administered to an oral cavity for the purpose of providing lubrication therein. In certain embodiments, the sustained release dosage form not only provides lubrication to a mucosal surface of an oral cavity, but also provides for the sustained release of a flavoring and/or beneficial agent. Accordingly, in certain embodiments, the sustained release dosage form includes a water-insoluble polymer, e.g., ethylcellulose, an essential oil component, and an effective amount of a film forming binder, e.g., xanthan gum. In certain embodiments, the effective amount of the film forming binder and the type of film forming binder are selected so as to provide the sustained release dosage with the capability of lubricating one or more mucosal surfaces within an oral cavity when the dosage form is positioned therein. In certain embodiments, the sustained release dosage form is formulated in a manner sufficient to form a matrix that includes the various components of the sustained release dosage form, such that when positioned in an oral cavity the matrix slowly dissolves and thereby lubricates the oral cavity and/or delivers a flavoring and/or beneficial agent thereto. Methods of formulating such dosage forms and administering them to an oral cavity for the treatment of an adverse condition are also provided. | 03-26-2009 |
20100063152 | Method and Topical Formulation for Treating Localized Edema - Methods and formulations are provided for the treatment of localized edema, particularly localized edema resulting from chronic venous insufficiency. A metal ion sequestrant is topically administered to a subject afflicted with localized edema in combination with a permeation enhancer selected from methylsulfonylmethane and a combination of methylsulfonylmethane and dimethylsulfoxide. Topically administrable formulations for use in the aforementioned method are also provided. | 03-11-2010 |
20100069335 | Prevention and Treatment of Ophthalmic Complications of Diabetes - An method and formulation are provided for the prevention and treatment of adverse ocular conditions which are complications of diabetes. In one embodiment, the invention comprises administering to a person having diabetes, insulin resistance, or a risk factor for diabetes a formulation comprising a metal chelator and a transport enhancer. Most preferably, the metal chelator is EDTA or a salt of EDTA, and the transport enhancer is methylsulfonylmethane (MSM). The formulation may be in a form suitable for application to the eye itself, for example, in the form of eye drops. | 03-18-2010 |
20100209419 | Method and formulation for treating adverse biological conditions - A method for treatment of adverse biological conditions is provided, wherein a biologically active agent such as a macromolecular biomolecule, e.g., a nucleic acid or a peptidic compound, is administered to a subject in need of such treatment in a formulation containing a transport enhancer having the structure of formula (I) | 08-19-2010 |