Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with making UE handover decisions. In one example, a node is equipped to obtain one or more UE measurement values associated with a UE, determine a mobility state of the UE based at least in part on the obtained one or more UE measurement values, and adjust one or more handover parameters based at least in part on the determined mobility state of the UE. In another example, a UE is equipped to obtain one or more UE measurements, determine a handover state of a UE based on the obtained one or more UE measurements, and perform a handover-related action based on the determined handover state of the UE.

Abstract: A method for reducing interference to wireless communication devices is described. It is determined that a base station is deployed with a first coverage area that overlaps a second coverage area of a femto access point. The base station uses a first carrier for wireless communications. The femto access point uses a second carrier for wireless communications. Transmissions by the femto access point interfere with transmissions by the base station. An amount of radio frequency (RF) leakage experienced by wireless communication devices communicating with the base station is estimated. Interference experienced by the wireless communication devices is minimized.

Abstract: Techniques are described for handover decisions based on an absolute channel quality of a serving cell. For example, there is provided a method that involves generating a set of handover parameters based on a report of serving cell signal quality to avoid ping-ponging effects of an access terminal between a serving cell and another cell. A network entity receives a report regarding a serving cell signal quality from a reporting entity. A set of parameters is defined for a network event and sent to an access terminal, where the set of parameters is based at least in part on the received report. The set of parameters for the network event is sent to the access terminal.

Abstract: A base station in a cellular wireless communications system uses one or more control algorithms to control a transmission pattern of a 1xRTT or DO discovery beacon. The transmission pattern enables access terminals using any one of multiple wake-up periods and wake-up offsets to discover all macrocell frequencies in a finite amount of time. In addition, for base stations allocating a single transmit chain to both 1xRTT and DO beacons, the transmission pattern enables a definite maximum discovery time for both 1xRTT and DO beacons for all access terminals entering the base station coverage.

Abstract: A method for reducing interference to wireless communication devices is described. A handoff request is received from a wireless communication device. A femto access point that is a hand-in target of the handoff request is determined. A handoff information message is sent to the femto access point. The method may be performed by a core network apparatus.

Abstract: Transmit power for a user equipment (UE) is set by a Home NodeB (HNB) in response to interference at a nearby macrocell. The HNB monitors an interference level to the macrocell from a UE communicating with the HNB. An acceptable transmit power for the UE is determined by the HNB in response to the interference level. A power change indicator is transmitted from the HNB to the UE to adjust the transmit power of the UE. In some cases, the interference may be estimated from a busy indicator from the macrocell and the HNB sends a modified version of the busy indicator to the UE to adjust the transmit power of the UE. In other cases, the HNB estimates a path loss for the UE based on received signal power from the macrocell and signals a transmit power change to the UE, if needed, based on the estimated path loss.

Abstract: A small cell (e.g., femtocell) in a wireless communication may determine a set of wireless signal measurements for a plurality of small cells causing pilot cell pollution within a coverage area. The small cell may determine an adjustment of a transmission parameter of the small cells for reducing the pilot cell pollution, and transmit the adjustment to the small cells. The adjustment may include, for example, minimizing an area of overlap between at least two small cells having signal power difference below a threshold, maximizing a signal to interference and noise ratio at a location associated with at least two small cells, minimizing an area associated with at least two pilot signals within a threshold signal level, distributing traffic load to at least two of the small cells based on the set of measurements, or by minimizing the number of small cells covering a path.

Abstract: Systems and methods for performing a handoff of an access terminal from a macro node to a femto node are disclosed. In one embodiment, a femto convergence server may select a target femto node based on, at least in part, signal strengths of the reverse links between femto nodes with a specific identifier and an access terminal, and the transmit pilot powers of the femto nodes.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with classifying devices that communicate with a femto node for providing services thereto. In one example, a node is equipped to monitor and/or receive one or more parameters communicated by a device, assign a classification to the device related to a frequency of using the femto node based in part on the one or more parameters. In an aspect, the node is equipped to provide services to the device based on the classification. In another aspect, the node is equipped to provide the classification to one or more femto nodes, including the femto node, for providing services to the device.

Abstract: Systems and methods are provided for a femto node to configure one or more of its RF parameters. This may be achieved, for example, by determining capabilities of one or more neighboring femto or pico nodes based in part on signals received from the one or more neighboring femto or pico nodes, comparing the determined capabilities of the one or more neighboring femto or pico nodes to one or more capabilities of the femto node, and adjusting one or more RF parameters of the femto node based on the comparison.

Abstract: Coverage holes are identified and appropriate action taken in response thereto. The identification of a coverage hole may be based on, for example, measurements taken at an access point, measurement report messages from an access terminal, idle user registrations, active user handovers, or handover history. Upon identification of a coverage hole, action may be taken to mitigate (e.g., reduce or eliminate) the coverage hole and/or avoid the coverage hole. For example, in some embodiments, access point resources such as power, frequency and time are allocated accordingly. The action to be taken may depend on whether a coverage hole is noise-limited or interference-limited. In some embodiments, the manner in which handovers are conducted is modified upon identification of a coverage hole. The above actions may be performed entirely at an access point.

Abstract: Methods and apparatus are provided for adapting femtocell properties based on changes detected in network topology. A method includes detecting a network topology change associated with a network node. The method includes determining an availability factor of the network node based on the topology change. The method includes setting mobility parameters of at least one mobile entity serviced by the network entity and mitigating interference with at least one neighboring network node based at least in part on the network topology and on at least one adjusted resource parameter of the network entity.

Abstract: Disclosed are system and method for classifying an indoors location of a femtocell or femto node. In an aspect, the system and method are configured to perform, by a femto node, radio frequency (RF) measurements of one or more neighboring femtocells and macrocells; collect performance measurement reports from one or more mobile devices; classify the indoors location of the femto node based on the performed RF measurements and the collected performance measurement reports; and adjust one or more RF resources and parameters of the femto node based on the indoors location classification of the femto node.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with determining whether to offload a device from a femto node. In one example, a serving femto node is equipped to obtain load information regarding a target node, compare an expected throughput at the target node, estimated based in part on the load information, to a threshold, and determine whether to handover a device to the target node based in part on the comparing. In an aspect, the serving node is further equipped to compute its own throughput based on parameters specific to the serving femto node or the device, and the threshold is the throughput at the serving femto node.

Abstract: Low-power access points are used to identify traffic congestion zones in a network. The low-power access points collect metrics that are used identify high demand areas. The locations of the traffic congestion zones are then determined based on the locations of the low-power access points that identified high demand. In some embodiments, metrics are collected and processed in a distributed fashion at each femtocell. Each femtocell then outputs an indication of high demand in the area and/or takes action to address the high demand at an identified traffic congestion zone. Alternatively, the femtocells may collectively take action to address the high demand at one or more identified traffic congestion zones. In other embodiments, metrics may be collected from the femtocells at a central entity and processed to identifying any traffic congestion zones near the femtocells, whereby the central entity takes appropriate action to address the high demand.

Abstract: Methods and apparatus are provided for configuring mobility or paging parameters of a femto node. A method includes determining capabilities of one or more neighboring access points based in part on signals received from the one or more neighboring access points. The method includes comparing the capabilities to one or more capabilities of the femto node to determine a mobility or paging parameter adjustment. The method includes adjusting one or more mobility or paging parameters based on the mobility or paging parameter adjustment.

Abstract: A femtocell base station includes a transmitter that transmits downlink signals to a mobile station, a receiver that receives uplink signals from the mobile station, a standard transmit pulse-shaping filter, and a narrower transmit pulse-shaping filter that limits the bandwidth of the downlink signals to a greater extent than the standard transmit pulse-shaping filter. The femtocell base station also includes a standard receive pulse-shaping filter and a narrower receive pulse-shaping filter. The femtocell base station is configured to switch between the standard transmit pulse-shaping filter and the narrower transmit pulse-shaping filter, and to switch between the standard receive pulse-shaping filter and the narrower receive pulse-shaping filter. A mobile station may switch from a standard transmit pulse-shaping filter to a narrower transmit pulse-shaping filter to limit uplink interference.

Abstract: A mobile station may include a standard transmit pulse-shaping filter, a standard receive pulse-shaping filter, a narrower transmit pulse-shaping filter, and a narrower receive pulse-shaping filter. A femtocell base station may include a narrower transmit pulse-shaping filter and a narrower receive pulse-shaping filter. The mobile station may utilize the narrower transmit pulse-shaping filter for transmitting uplink signals and the narrower receive pulse-shaping filter for receiving downlink signals when it is receiving service from the femtocell base station. The mobile station may utilize the standard transmit pulse-shaping filter for transmitting uplink signals and the standard receive pulse-shaping filter for receiving downlink signals when it is receiving service from a macrocell base station.

Abstract: Briefly, in accordance with one embodiment, a method of transmitting signals is provided. Signal waveforms are transmitted from at least two respective sectors. The at least two respective sectors are from at least two different sets of a superset of sectors. The transmitted signal waveforms include signal waveforms at least nearly mutually orthogonal at least along a particular signal dimension. An advantage of such an embodiment, for example, is reduced signal interference.

Abstract: Embodiments disclosed herein relate to methods and systems for server selection during feedback channel impairment in wireless communications. The feedback channel may be provided by a data rate control (DRC) channel, transmitted from an access terminal to an access network relating the selected serving sector (DRC cover) and the desired data rate (DRC rate) for transmission on forward link. During DRC cover erasure (e.g., due to channel impairment), a data source control (DSC) channel may be used as complimentary information to assist the DRC erasure mapping decision at the access network.