| Patent application number | Description | Published |
|---|
| 20080285537 | System and method for communicating packet in a wireless multicast and broadcast communication network - A method and system for communicating packets in a Wireless Multicast and Broadcast communication network is provided. The method includes selecting a Modulation and Coding Scheme (MCS) for transmission of a packet. The packet is then transmitted using the selected MCS on at least one of a subset of available time slots, a subset of available frequency sub-carriers and a subset of available antennas. Thereafter, it is autonomously decided whether the plurality of transmitters are to retransmit the packet. Then, the packet is retransmitted on at least one of a different subset of time slots, a different subset of frequency sub-carriers and a different subset of antennas. | 11-20-2008 |
| 20090310550 | Method and apparatus for link adaptation in wirless communication network - A method and apparatus for link adaptation in a wireless communication network is provided. The method includes computing a first channel quality parameter based on one or more channel quality parameters. The one or more channel quality parameters are associated with a communication link between a Mobile Station (MS) and a Base Station (BS). The method further includes determining a qualifying transmission unit to compute a correction parameter. The correction parameter is computed based on the first channel quality parameter and one or more transmission parameters. The one or more transmission parameter is associated with the communication link. Thereafter, the method schedules a transmission mode of the communication link based on a second channel quality parameter. The second channel quality parameter is estimated based the first channel quality parameter and the correction parameter. | 12-17-2009 |
| 20090310562 | Wireless subscriber inter-technology handoff - Embodiments for a method and apparatus of a wireless subscriber unit triggering an inter-technology handoff are disclosed. One method includes estimating a signal quality of first technology communication signals received from a serving base station. Information of neighboring base stations is received from the serving base station. Based on the information of the neighboring base stations, a signal quality of first technology communication signals received from each of the neighboring base stations is estimated. An inter-technology handoff is triggered based on a function of the signal quality of communication signals received from a serving base station and the signal quality of communication signals received from each of the neighboring base stations. | 12-17-2009 |
| 20090316636 | Selecting a transmission mode between a subscriber and a base station - Embodiments for a method and apparatus of selecting a transmission mode between the subscriber and a base station are disclosed. One method includes determining a predictive window. Instantaneous channel quality measurements are averaged, wherein the averaging is dependent upon a size of the predictive window. A first estimate of the transmission mode is determined based on the averaged instantaneous channel quality measurements. A margin is calculated based on reception of a qualifying downlink transmission. The transmission mode is selected by updating the first estimate with the margin. | 12-24-2009 |
| 20110021210 | Estimating a subscriber location - A method and apparatus of estimating a location of a subscriber are disclosed. One method includes receiving a request for the location of the subscriber. The subscriber's serving base station, and a plurality of neighboring base stations sensed by the subscriber, are identified. At least two of the neighboring base stations are selected to aid in estimating the location of the subscriber. Stored locations of the serving base station and the selected neighboring base stations are accessed. The subscriber obtains a time delay from the serving base station for maintaining synchronization of the subscriber with the serving base station. The subscriber estimates a distance between the subscriber and the serving base station based on the time delay. The subscriber receives frames including preambles from each of the selected neighboring base stations, and estimates a delta time for each of the selected neighboring base stations for the subscriber to synchronize to each of the selected neighboring base stations. The subscriber estimates distances between the subscriber and each of the selected neighboring base stations based on the time delay and the delta time of each of the selected neighboring base stations. The subscriber location is estimated by trilateration of the distance between the subscriber and the serving base station, and the distances between the subscriber and each of the selected neighboring base stations. | 01-27-2011 |
| 20110086638 | METHOD AND APPARATUS FOR POWER AND HANDOVER MANAGEMENT IN A MULTIPLE WIRELESS TECHNOLOGY COMMUNICATION DEVICE - Method and apparatuses for power and handoff management in a multiple wireless technology communication device are disclosed. One method includes a wireless device communicating using a first technology, and detecting availability of a second technology. Logic control of the wireless device receives a power level indicator of communication signals of the first technology, and determining an acceptable power level of communication signals of the second technology based on the power level indicator. The logic control determines a requested power level of communication signals of the second technology based on a request from a base station. The logic control provides a modified link quality representation to the base station if the requested power level is greater than the acceptable power level. The wireless device transmits to the base station with the second technology at the acceptable power level. | 04-14-2011 |
