Patent application number | Description | Published |
20090201871 | EFFICIENT UTILIZATION OF CHANNEL RESOURCES IN WIRELESS COMMUNICATION - Providing for improved wireless communications for user equipment (UE) in a semi-active state is described herein. By way of example, a base station can employ particular wireless channel resources, monitored by a UE in a CELL_FACH state for instance, to trigger channel feedback information from the UE. The trigger can comprise an explicit order instructing the UE to provide data in response, or can include a portion of downlink traffic targeting the UE, where the UE is configured to respond in a suitable manner to receipt of traffic data. The UE can maintain the CELL_FACH state in receiving to and responding to the trigger, and can further receive subsequent traffic data in such state. Accordingly, the subject disclosure provides for improved efficiency and reliability in semi-active state wireless communications. | 08-13-2009 |
20100273432 | MEASUREMENT AGGREGATION IN WIRELESS COMMUNICATIONS SYSTEMS - Systems, devices, and methods for adjusting a transmission power at a femto node are described herein. According to the systems, devices, and methods herein, a measurement of a signal transmitted from a transmitting node may be communicated to the femto node, for example from a user equipment or a neighboring femto node, for use in adjusting the power. The transmitting node may comprise the femto node, a macro node, or a neighboring femto node. In addition, statistics regarding such measurements may be communicated to the femto node for use in adjusting the power. The femto node may also adjust the power based on unsuccessful registration attempts or interference communications received at the femto node. | 10-28-2010 |
20100273471 | FEMTO NODE POWER ADJUSTMENT IN WIRELESS COMMUNICATIONS SYSTEMS - Systems, devices, and methods for adjusting a transmission power at a femto node are described herein. According to the systems, devices, and methods herein, a measurement of a signal transmitted from a transmitting node may be communicated to the femto node, for example from a user equipment or a neighboring femto node, for use in adjusting the power. The transmitting node may comprise the femto node, a macro node, or a neighboring femto node. In addition, statistics regarding such measurements may be communicated to the femto node for use in adjusting the power. The femto node may also adjust the power based on unsuccessful registration attempts or interference communications received at the femto node. | 10-28-2010 |
20100273473 | COMMUNICATION OF AN INTERFERENCE CONDITION IN WIRELESS COMMUNICATIONS SYSTEMS - Systems, devices, and methods for adjusting a transmission power at a femto node are described herein. According to the systems, devices, and methods herein, a measurement of a signal transmitted from a transmitting node may be communicated to the femto node, for example from a user equipment or a neighboring femto node, for use in adjusting the power. The transmitting node may comprise the femto node, a macro node, or a neighboring femto node. In addition, statistics regarding such measurements may be communicated to the femto node for use in adjusting the power. The femto node may also adjust the power based on unsuccessful registration attempts or interference communications received at the femto node. | 10-28-2010 |
20100273481 | FEMTO NODE POWER ADJUSTMENT USING REQUESTS FOR REGISTRATION - Systems, devices, and methods for adjusting a transmission power at a femto node are described herein. According to the systems, devices, and methods herein, a measurement of a signal transmitted from a transmitting node may be communicated to the femto node, for example from a user equipment or a neighboring femto node, for use in adjusting the power. The transmitting node may comprise the femto node, a macro node, or a neighboring femto node. In addition, statistics regarding such measurements may be communicated to the femto node for use in adjusting the power. The femto node may also adjust the power based on unsuccessful registration attempts or interference communications received at the femto node. | 10-28-2010 |
20110176484 | Channel Quality Indicator Design for Multiple-User Multiple-Input and Multiple-Output in High-Speed Packet Access Systems - A method for providing multiple-user multiple-input and multiple-output in a high-speed packet access system is described. A channel quality indicator is received from a dual-stream-capable wireless communication device requesting a single-stream transmission at a first data rate. The first data rate is adjusted by an adaptive outer loop margin to obtain a second data rate. A data stream is transmitted to the wireless communication device using the second data rate. A positive-acknowledgement/negative-acknowledgement (ACK/NACK) is received from the wireless communication device. The adaptive outer loop margin is adjusted according to the received ACK/NACK. | 07-21-2011 |
20110237261 | TRANSMITTING SUBSTITUTE RESELECTION PARAMETERS - A cell reselection parameter is transmitted on one carrier frequency for a defined period of time to cause access terminals operating on that carrier frequency to more aggressively search for access points on at least one other carrier frequency. For example, a femto cell operating on one carrier frequency may transmit a broadcast channel including a cell reselection parameter such as Sintersearch on another carrier frequency that is used by a macro cell. Here, the value of the cell reselection parameter (e.g., Sintersearch) is chosen so that the access terminals will more aggressively conduct inter-frequency searches. In addition, the cell reselection parameter is transmitted for a period of time that ensures that a nearby access terminal will receive the parameter during its wakeup interval. | 09-29-2011 |
20110274053 | SYSTEM AND METHOD FOR CONTROLLING DOWNLINK PACKET LATENCY - A method, an apparatus, and a computer program product for wireless communication are provided in which VoIP traffic is scheduled in a way that focuses on controlling user latencies, by reshaping packet latency profiles of individual users to more efficiently utilize power/code resources. A feedback mechanism may utilize certain latency controllers to adjust a queuing delay and an over-the-air transmit time to meet latency targets. That is, system resources may be allocated in a wireless network by adjusting a latency target for a packet responsive to a user's packet latency history. | 11-10-2011 |
20110287787 | LOCATION-BASED SERVICE BASED ON ACCESS POINT IDENTIFIERS - An access point transmits cell information via a physical layer channel. In some cases, the cell information sent on the physical layer channel comprises a physical layer identifier. For example, a physical layer channel may be modulated based on a cell identifier and/or a closed subscriber group identifier associated with the access point. Through the use of this cell information, an access point may be quickly identified for mobility and/or interference management operations. In addition, this cell information may be used for finger-printing operations. | 11-24-2011 |
20110294493 | MODULATING CELL INFORMATION ON A PHYSICAL CHANNEL - An access point transmits cell information via a physical layer channel. In some cases, the cell information sent on the physical layer channel comprises a physical layer identifier. For example, a physical layer channel may be modulated based on a cell identifier and/or a closed subscriber group identifier associated with the access point. Through the use of this cell information, an access point may be quickly identified for mobility and/or interference management operations. In addition, this cell information may be used for finger-printing operations. | 12-01-2011 |
20110319084 | METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN FEMTOCELL DEPLOYMENTS - Methods and apparatuses are provided for mitigating interference among access points, and/or devices communicating therewith, in unplanned network deployments. Based on determining that one or more served devices potentially interfere with one or more access points, an inter-frequency handover (IFHO) threshold or data rate can be adjusted for the device to cause IFHO or reduce occurrence of interference, and/or a coverage area can be modified so the device can communicate with one or more other access points to mitigate potential interference. Based on determining interference from one or more devices served by other access points, an access point can switch operating modes to a hybrid or open access point to allow the one or more devices to handover to the access point, and/or can boost downlink transmit power to cause the one or more devices to perform IFHO from the other access points to mitigate potential interference. | 12-29-2011 |
20110319088 | METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN FEMTOCELL DEPLOYMENTS - Methods and apparatuses are provided for determining one or more parameters of an access point that can be set or adjusted to mitigate interference to other access points. A rise-over-thermal (RoT) threshold can be set at an access point based on one or more parameters, such as pathloss measurements, location of the access point, etc., such that interference from devices communicating with the access point can be mitigated. In addition, a noise floor, RoT threshold, etc., can be adjusted based on determining a transmit power difference, out-of-cell interference, and/or similar measurements. | 12-29-2011 |
20110319122 | METHOD AND APPARATUS FOR DEVICE TRANSMIT POWER CAPPING IN WIRELESS COMMUNICATIONS - Methods and apparatuses are provided for determining a transmission power cap for one or more devices based at least in part on pathloss measurements to one or more access points received from the one or more devices. A common transmission power cap can also be computed for assigning to devices communicating with an access point, and the transmission power cap for a given device can be adjusted when the transmission power is at or a threshold level from the common power cap to conserve signaling in the wireless network. Adjustment of the transmission power cap can additionally or alternatively be based on a received power at an access point related to signals from the device, an interference report from one or more access points, and/or the like. | 12-29-2011 |
20120021788 | METHOD AND APPARATUS FOR HANDOVER OF DEVICE TO MITIGATE UPLINK INTERFERENCE IN FEMTOCELL DEPLOYMENTS - Methods and apparatuses are provided for determining whether to handover a device to mitigate uplink interference while achieving acceptable uplink service quality in a wireless network. One or more parameters related to a device can be evaluated to determine whether to handover the device, such as a number of transmission power reports received from the device over a period of time, a frame error rate, setpoint, or power control commands related to the uplink of the device, a received pilot signal strength at the device, an uplink throughput or buffer size at the device, etc., from which transmit power information of the device can be inferred for determining whether the device potentially interferes with access points or devices. Based on the one or more parameters, an access point can determine whether handing over the device may mitigate such uplink interference while ensuring uplink service quality, and accordingly handover the device. | 01-26-2012 |
20120039265 | CONTROLLING ACCESS POINT TRANSMIT POWER BASED ON RECEIVED ACCESS TERMINAL MESSAGES - Transmit power for an access point is controlled based on information received by the access point. For example, an access point may employ one or more algorithms that use messages received from nearby access terminals to maintain an acceptable tradeoff between providing an adequate coverage area for access point transmissions and mitigating interference that these transmissions cause at nearby access terminals. Here, the access point may employ a network listen-based algorithm upon initialization of the access terminal to provide preliminary transmit power control until sufficient information is collected for another transmit power control algorithm (e.g., an access terminal assisted algorithm). Also, the access terminal may employ an active access terminal protection scheme to mitigate interference the access point may otherwise cause to a nearby access terminal that is in active communication with another access point. | 02-16-2012 |
20120046026 | CONTROLLING ACCESS POINT TRANSMIT POWER BASED ON EVENT-TRIGGERED ACCESS TERMINAL MESSAGING - Transmit power for an access point is controlled based on measurement reports received by the access point from one or more access terminals that are not currently being served by the access point. In some aspects, transmit power is controlled based on the number of received messages that correspond to a particular event. In some aspects, transmit power is controlled based on the contents of the received messages. For example, the access point may use signal strength information included in the messages to determine a level of transmit power that mitigates interference at a defined subset of reporting access terminals. | 02-23-2012 |
20120046063 | CONTROLLING ACCESS POINT TRANSMIT POWER BASED ON ACCESS TERMINAL RANKING - Transmit power for an access point is controlled based on measurement reports received by the access point from one or more access terminals that are not currently being served by the access point. In some aspects, transmit power is controlled based on the number of received messages that correspond to a particular event. In some aspects, transmit power is controlled based on the contents of the received messages. For example, the access point may use signal strength information included in the messages to determine a level of transmit power that mitigates interference at a defined subset of reporting access terminals. | 02-23-2012 |
20120094660 | METHOD AND APPARATUS FOR PROVIDING ENHANCED INTERFERENCE MANAGEMENT AT RESTRICTED ACCESS POINTS - Methods and apparatuses are provided that facilitate providing access point measurements to restricted access points. Restricted access points can lessen restrictions to allow devices to register with the restricted access point for providing measurements thereto. Additionally or alternatively, access point measurements can be provided to a minimization of drive tests (MDT) server for providing to the restricted access points. Thus, restricted access points can obtain the access point measurements for performing enhanced interference management or other functionality based at least in part on the measurements. | 04-19-2012 |
20120142392 | MULTI-STAGE TRANSMIT POWER CONTROL SCHEME FOR ACCESS POINT - Transmit power for an access point is controlled based on information received by the access point. For example, an access point may employ one or more algorithms that use messages received from nearby access terminals to maintain an acceptable tradeoff between providing an adequate coverage area for access point transmissions and mitigating interference that these transmissions cause at nearby access terminals. Here, the access point may employ a network listen-based algorithm upon initialization of the access terminal to provide preliminary transmit power control until sufficient information is collected for another transmit power control algorithm (e.g., an access terminal assisted algorithm). Also, the access terminal may employ an active access terminal protection scheme to mitigate interference the access point may otherwise cause to a nearby access terminal that is in active communication with another access point. | 06-07-2012 |
20120238268 | APPARATUS AND METHODS OF HAND-IN TO A FEMTO NODE - Methods and apparatuses are provided for causing active hand-in of a device from a macrocell base station to a femto node, which can be an inter-frequency hand-in. The femto node can broadcast a beacon over an operating frequency of the macrocell base station, and the macrocell base station, and/or one or more network components, can identify the femto node based on one or more parameters reported by the device from receiving the beacon. The beacon can be transmitted at varying powers to ensure active hand-in triggering, mitigate interference and/or can be powered on and off for such purposes. In addition, a macrocell base station can regulate compressed mode periods during which a device can measure the femto node based on receiving information regarding device proximity to the femto node, or a device can generate proximity indication messages base on measuring the beacon signals, etc. | 09-20-2012 |
20120309394 | APPARATUS AND METHODS FOR HAND-IN TO A FEMTO NODE - Methods and apparatuses are provided for causing active hand-in of a device from a macrocell base station to a femto node, which can be an inter-frequency hand-in. The femto node can broadcast a beacon, which can be received and reported by a device to a source base station along with one or more parameters for disambiguating a target femto node. The source base station can communicate a handover message to the femto node or a related femto gateway along with the one or more parameters. The femto node or femto gateway can disambiguate the intended target femto node based in part on the one or more parameters, which can include applying one or more filters. Additionally, the femto node can broadcast multiple beacons to assist in disambiguation of the target femto node. Also, where complete disambiguation is not possible, the femto gateway can prepare multiple femto nodes for hand-in. | 12-06-2012 |
20120322494 | MANAGEMENT OF HIGH-SPEED DEDICATED PHYSICAL CONTROL CHANNEL DECODING IN SOFT HANDOVER - Methods for management of high-speed dedicated physical control channel decoding in soft handover procedures include various methods that include controlling reverse link transmission power. Different algorithms may be used for controlling transmission power, including algorithms summarized as determining path-loss differences, determining a difference between pilot channel power from HSDPA serving and non-serving NodeBs, and adjusting a signal-to-interference target, an attenuation factor, or similar parameters for controlling reverse link power. Another of the management methods includes selecting a HSDPA serving NodeB for a mobile entity jointly based on the downlink and uplink channel quality, loading, and resource availability. The methods, and aspects of the methods, may be embodied in wireless communications apparatus, for example, in a NodeB or mobile entity. | 12-20-2012 |
20130079003 | MAINTAINING NEIGHBOR CELL LIST - Access terminals are provisioned to conduct intra-frequency, inter-frequency, and inter-RAT measurements and report physical layer identifiers of detected cells. The provisioning may involve cycling through all or a portion of a defined superset of physical layer identifier one subset at a time. In addition, the physical layer identifiers may be prioritized to improve the search procedure. Measurement report messages (including physical layer identifiers of the detected cells) are received at an access point as a result of the provisioning. A neighbor cell list for the femtocell is maintained based on the received measurement report messages and, optionally, other information. This other information may related to, for example, one or more of: physical layer identifier information received from access terminals that register with the access point, physical layer identifier information received via network listen operations, information regarding co-located cells, or physical layer identifier information received from a network entity. | 03-28-2013 |
20130079007 | NEIGHBOR CELL LIST BASED ON HANDOVER MESSAGE - A neighbor cell list for a cell is maintained based on a received handover message that identifies at least one physical layer identifier. For example, the handover message may include measurement report messages (MRMs) generated by the access terminal being handed over. As another example, the handover message may include a neighbor cell list that is associated with the access terminal. The measurement report messages and the neighbor cell list associated with the access terminal will identify physical layer identifiers of cells in the vicinity of the source cell and, in some cases, in the vicinity of the access terminal being handed over. Upon receipt of the handover message, the neighbor cell list for the target cell is updated based on the physical layer identifiers identified by the handover message. | 03-28-2013 |
20130094374 | METHOD AND APPARATUS FOR VIRTUAL ADAPTIVE UPLINK ATTENUATION - Techniques are provided for overcoming uplink (UL) interference at a femtocell or the like by modifying the estimated interference-plus-noise power in UL power control. In one example, the modification can be specified by a method, operable by a network entity, that may involve determining a level of excess received interference based at least in part on out-of-cell interference (Ioc). In another example, the modification can be specified by a method, operable by a network entity, that may involve determining a difference between the downlink transmit powers of the high-speed downlink packet access (HSDPA) serving and non-serving cells, with which the UE are in soft handover (SHO) in uplink and is served by the HSDPA serving cell in downlink. | 04-18-2013 |
20130102309 | METHOD AND APPARATUS FOR CALIBRATING TRANSMIT POWER OF A FEMTO NODE - Methods and apparatuses are provided that include calibrating transmit power of a femto node based on measuring one or more parameters related to usage of the femto node. The femto node can temporarily increase transmit power and analyze received measurement reports to determine a transmit power calibration. The femto node can additionally measure uplink received signal strength indicators over multiple time periods following handover of a user equipment (UE) to determine whether to increase transmit power to cover the UE. | 04-25-2013 |
20130150035 | METHOD AND APPARATUS FOR CLASSIFYING NEIGHBORING DEVICES - Methods and apparatuses are provided that include classifying nearby devices as neighboring or non-neighboring devices. Devices can be classified based on detected registration attempts to a femto node, where the femto node can switch paging area identifiers to cause the registration attempts or otherwise, analyzing measurement reports received from the devices in a registration request, and/or the like. The femto node can mitigate interference to the devices based on the classification. | 06-13-2013 |
20130225167 | METHOD AND APPARATUS FOR EXPANDING FEMTOCELL COVERAGE FOR HIGH CAPACITY OFFLOAD - Systems and methods are provided for deploying a femto node with expanded coverage. This may be achieved, for example, by operating a femto node in an open or hybrid access mode to allow registration from both member and non-member devices, monitoring conditions on a backhaul link maintained with a wireless network over a broadband connection configured to provide internet access to the devices and to other devices operating independent of the femto node, and managing resources or mobility for each device based on whether the device is a member device or a non-member device and based on the conditions over on the backhaul link. | 08-29-2013 |
20130235746 | METHOD AND SYSTEM FOR FEMTOCELL CHANNEL SELECTION - Femto node radio frequency channel selection may be achieved by selecting between a first band of operating channels and a second band of operating channels for a femto node based on at least one band-selection criterion, the first band including a plurality of channels that are higher in frequency than a plurality of channels in the second band, and configuring the femto node for operation according to one or more operating channels in the selected band. | 09-12-2013 |
20140135004 | MULTI-STAGE TRANSMIT POWER CONTROL SCHEME FOR ACCESS POINT - Transmit power for an access point is controlled based on information received by the access point. For example, an access point may employ one or more algorithms that use messages received from nearby access terminals to maintain an acceptable tradeoff between providing an adequate coverage area for access point transmissions and mitigating interference that these transmissions cause at nearby access terminals. Here, the access point may employ a network listen-based algorithm upon initialization of the access terminal to provide preliminary transmit power control until sufficient information is collected for another transmit power control algorithm (e.g., an access terminal assisted algorithm). Also, the access terminal may employ an active access terminal protection scheme to mitigate interference the access point may otherwise cause to a nearby access terminal that is in active communication with another access point. | 05-15-2014 |
20140161073 | METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN FEMTOCELL DEPLOYMENTS - Methods and apparatuses are provided for determining one or more parameters of an access point that can be set or adjusted to mitigate interference to other access points. A rise-over-thermal (RoT) threshold can be set at an access point based on one or more parameters, such as pathloss measurements, location of the access point, etc., such that interference from devices communicating with the access point can be mitigated. In addition, a noise floor, RoT threshold, etc., can be adjusted based on determining a transmit power difference, out-of-cell interference, and/or similar measurements. | 06-12-2014 |
20140219117 | APPARATUS AND METHOD FOR INTER CELL INTERFERENCE COORDINATION - The present disclosure presents a method and an apparatus of triggering an inter cell interference coordination (ICIC) mechanism in a wireless network. For example, the disclosure presents a method for identifying a pilot pollution metric and determining when a pilot pollution condition based at least on the pilot pollution metric is satisfied. In addition, such as an example method may include triggering an ICIC mechanism when the pilot pollution condition is satisfied. As such, triggering an ICIC mechanism in a wireless network may be achieved. | 08-07-2014 |
20140219243 | APPARATUS AND METHODS OF JOINT TRANSMIT POWER AND RESOURCE MANAGEMENT - The present disclosure presents a method and apparatus for joint power and resource management in a wireless network. For example, the disclosure presents a method for receiving reference signal received power (RSRP) measurements of one or more neighboring base stations of a base station. In addition, such an example method, may include calibrating a transmit power of the base station based at least on the received measurements, and adjusting transmit resources of the base station in response to the calibration. As such, joint power and resource management in a wireless network may be achieved. | 08-07-2014 |
20140334424 | METHODS AND APPARATUS FOR POWER MANAGEMENT IN A WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for communication comprise aspects that include performing a power management procedure for configuring a subset of network entities to receive one or more of downlink signal measurements and/or one or more uplink signal measurements. The methods and apparatus further comprise aspects that include storing the one or more one or more of downlink signal measurements and/or one or more uplink signal measurements associated with the subset of network entities at a database for managing transmit power at the subset of network entities. Moreover, the methods and apparatus comprise aspects that include adjusting a transmit power value of at least one of the subset of network entities from a first transmit power value to a second transmit power value based at least in part on the one or more of downlink signal measurements and/or one or more uplink signal measurements. | 11-13-2014 |
20140378124 | FEMTO NODE POWER ADJUSTMENT IN WIRELESS COMMUNICATIONS SYSTEMS - Systems, devices, and methods for adjusting a transmission power at a femto node are described herein. According to the systems, devices, and methods herein, a measurement of a signal transmitted from a transmitting node may be communicated to the femto node, for example from a user equipment or a neighboring femto node, for use in adjusting the power. The transmitting node may comprise the femto node, a macro node, or a neighboring femto node. In addition, statistics regarding such measurements may be communicated to the femto node for use in adjusting the power. The femto node may also adjust the power based on unsuccessful registration attempts or interference communications received at the femto node. | 12-25-2014 |
20150018042 | METHOD AND APPARATUS FOR PROVIDING ENHANCED INTERFERENCE MANAGEMENT AT RESTRICTED ACCESS POINTS - Methods and apparatuses are provided that facilitate providing access point measurements to restricted access points. Restricted access points can lessen restrictions to allow devices to register with the restricted access point for providing measurements thereto. Additionally or alternatively, access point measurements can be provided to a minimization of drive tests (MDT) server for providing to the restricted access points. Thus, restricted access points can obtain the access point measurements for performing enhanced interference management or other functionality based at least in part on the measurements. | 01-15-2015 |
20150085686 | SCHEDULING BASED ON SIGNAL QUALITY MEASUREMENTS - Systems and methods for resource coordination and management in a communication environment are disclosed. The resource coordination and management may comprise, for example: transmitting channel and interference measurement signals over a plurality of resources; receiving link signal quality measurements that are based on the transmission of the channel and interference measurement signals over the plurality of resources; exchanging link signal quality measurement information with at least one apparatus, wherein the exchange of the link signal quality measurement information comprises sending information based on the received link signal quality measurements; and determining a data transmission schedule based on the exchange of the link signal quality measurement information. | 03-26-2015 |