Patent application number | Description | Published |
20090067375 | BEAMFORMING WITH NULLING TECHNIQUES FOR WIRELESS COMMUNICATIONS NETWORKS - Beamforming with nulling techniques for wireless communications networks are disclosed. For example, an apparatus may include a beamforming module and a weight determination module. The beamforming module applies beamforming weights to a downlink user channel with a first mobile station. The weight determination module determines the beamforming weights based on user channel information and interfering channel information. This user channel information is received from the first mobile station and includes characteristics of the downlink user channel. However, the interfering channel information includes characteristics of one or more downlink interfering channels received by one or more further mobile stations. These downlink interfering channels are associated with transmissions across the downlink user channel with the first mobile station. | 03-12-2009 |
20090170497 | PROBABILISTIC INTERFERENCE MITIGATION FOR WIRELESS CELLULAR NETWORKS - An interference mitigation system randomizes transmissions to cell-edge users by carefully controlling the probability of transmission to these users, thereby creating a virtual fractional frequency system that does not require extensive frequency management and coordination across the network. In some embodiments, the interference mitigation system identifies severely interfered links and reduces the probability of transmission on these links, with the result being a reduced probability of interference. | 07-02-2009 |
20100020702 | TECHNIQUES FOR WIRELESS COMMUNICATIONS NETWORKS EMPLOYING BEAMFORMING - Techniques involving beamforming are disclosed. For example, For instance an apparatus may select a first mobile station served by a first base station and a second mobile station served by a second base station. Based on this selection, a quality metric may be determined that is based on a strength of a user link and a strength of an interfering link. The user link is associated with service of the first mobile station and the interfering link is associated with service of the second mobile station. When the quality metric is greater than a predetermined threshold, the apparatus may designate the first and second mobile stations as suitable for beamforming service in a same resource allocation. Also, techniques are disclosed for determining whether a mobile station is a cell edge mobile station. | 01-28-2010 |
20100210295 | Uplink power control for wireless systems - Techniques are described that can be used to determine a transmitter power level of a mobile station at cell edge. To determine transmitter power level, the technique considers at least a balance of power transmitted by mobile stations near cell edge and power transmitted by mobile stations closer to cell center, target mean received power by the base station from mobile stations near center cell, target mean power transmitted from cell edge mobile stations, signal-to-interference-power ratio between signals transmitted from base stations of different cells to the mobile station at cell edge, and channel gain. | 08-19-2010 |
20100246538 | ADAPTIVE FREQUENCY REUSE METHOD OF RADIO RESOURCES MANAGEMENT AND ALLOCATION - A method for managing and allocating radio resources (RRMA method) of multiple radio resource types to subscriber stations is disclosed. The RRMA method includes bandwidth partitioning, into parts comprising “slots” with a given reuse pattern, a selection rule, to select a “cell, reuse pattern” pair serving each user, and an allocation rule, for distributing to each user an appropriate number of bandwidth slots from the selected “cell, reuse pattern” pair. After an adaptation period, the method reaches a desired fairness, while simultaneously reaching a maximal mean throughput, possible under this fairness. For big networks, the method provides basically decentralized radio resource management. The RRMA method is useful to cellular networks having a single set of orthogonal sub-channels (frequency/time slots) being reused by all network cells, such as time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), or OFDMA/TDMA cellular systems. Particularly, the method is applicable in fractional frequency reuse cellular networks. | 09-30-2010 |
20100248728 | USER GROUP-BASED ADAPTIVE SOFT FREQUENCY REUSE METHOD TO MITIGATE DOWNLINK INTERFERENCE FOR WIRELESS CELLULAR NETWORKS - A novel soft fractional frequency reuse (FFR) technique is disclosed. The novel FFR technique includes reuse partition and power restriction, dynamic user grouping, channel quality indicator feedback based on reuse, and a user group-based interference aware scheduler. The FFR technique reduces co-channel interference for cell edge users. | 09-30-2010 |
20100331000 | MACRO-TO-FEMTO CELL RESELECTION - The present invention discloses a method including: storing identification information or location information for a handover previously performed by a mobile system; estimating when the mobile system enters within a coverage area of a target femtocell; recognizing the coverage area based on the identification information or the location information; and scanning for the target-femtocell prior to handover. | 12-30-2010 |
20110002270 | BASE STATION AND METHOD FOR REDUCING ASYNCHRONOUS INTERFERENCE IN A MULTI-TIER OFDMA OVERLAY NETWORK - Embodiments of a base station and method for reducing asynchronous interference in a multi-tier OFDMA overlay network are generally described herein. In some embodiments, a lower-tier base station is configured to adjust OFDMA frame boundaries to cause frames communicated by a higher-tier to arrive within a cyclic prefix at the lower-tier base station. The lower-tier base station may also be configured to adjust OFDMA frame boundaries to cause frames communicated by a lower-tier of the network to arrive within a cyclic prefix at a higher-tier mobile station. Accordingly, frames from one tier may arrive within the cyclic prefix of another thereby reducing asynchronous interference. | 01-06-2011 |
20110268103 | TRANSMISSION SIGNALING TECHNIQUES TO ENHANCE RECEIVER INTERFERENCE MITIGATION PERFORMANCE - Techniques are described that can be used to maximize the interference suppression capability of space-time coded systems by managing synchronous transmission signaling. To enhance the probability of the occurrence synchronous interference and accordingly increase interference cancellation capability at a receiver, a network of at least two transmitters in a network may utilize similar structured coding schemes and coordinate transmission so that the receiver receives co-channel signals synchronously. | 11-03-2011 |
20120058789 | PROBABILISTIC INTERFERENCE MITIGATION FOR WIRELESS CELLULAR NETWORKS - An interference mitigation system randomizes transmissions to cell-edge users by carefully controlling the probability of transmission to these users, thereby creating a virtual fractional frequency system that does not require extensive frequency management and coordination across the network. In some embodiments, the interference mitigation system identifies severely interfered links and reduces the probability of transmission on these links, with the result being a reduced probability of interference. | 03-08-2012 |
20120147846 | BASE STATION AND METHOD FOR RESOURCE ALLOCATION USING LOCALIZED AND DISTRIBUTED RESOURCE BLOCKS - Embodiments of a base station and method for resource allocation using localized and distributed resource blocks are generally described herein. The base station comprises processing circuitry to allocate localized resources to user stations based on receipt of channel quality information received from the user stations and to allocate distributed resource to user stations based on non-receipt of channel quality information. The base station also comprises physical layer circuitry to transmit control information on a physical channel to indicate the resources that are allocated to each scheduled user station. | 06-14-2012 |
20150070833 | COMPOSABLE THIN COMPUTING DEVICE - This disclosure is directed to a composable thin computing device. An example device may comprise at least a device interface module, a communication module, a processing module, a memory module, a composable computing module and a power module. The device interface module may couple the device to an operational environment via at least one of a physical connector or a wireless connection. The communication module may at least one of transmit or receive data via the device interface module. The processing module may process the data. The memory module may store at least a portion of the data. The composable computing module may cause at least one of the above modules to perform certain functionality related to the operational environment. The power module may power at least one of the above modules. | 03-12-2015 |