Abstract: Techniques for supporting communication by base stations are disclosed. In an aspect of the present disclosure, for network-based alarming, a base station may notify a designated user equipment (UE) whenever certain trigger events occurred at the base station. The base station may send notification messages for detected trigger events to the UE for timely intervention. In another aspect of the present disclosure, for network-based reconfiguration, a base station for a small cell may be reconfigured by a network server based on performance metrics for base stations in a wireless system. The reconfiguration may improve the performance of the base station and possibly other base stations in the wireless system.

Abstract: A networking device continuously and simultaneously receives multiple sign and verify requests, without a priori knowledge of their quantity, type, sequence, length, input data or frequency. The networking device performs the corresponding signature operations and verification operations according to a rule based configuration. Each received sign and verify request is broken into multiple tasks, which are placed into a task pool with priorities, and disassociated from their originating requests and from other tasks. Multiple execution agents (each one a separate general purpose compute unit with its own memory space) repeatedly and simultaneously processes next available tasks from the pool based on priority. Asynchronous worker routines in the agents can pre-calculate certain values for higher level task processing. The output from completed tasks is placed into a repository, and the results in the repository are processed to fulfill the multiple received requests at network line speed.

Abstract: Coexistence solutions may be needed for sharing channels with multiple operators. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus for sharing channels with multiple operators are provided. The apparatus may detect a conflict between a first base station and a second base station based on a coverage overlap between the first base station and the second base station. The apparatus may resolve the conflict based on a classification of the conflict, and at least one of a channel priority or a channel preference.

Abstract: The disclosure provides techniques for reducing interference caused by a first device to a second device receiving a satellite-based positioning signal. A device such as a user equipment (UE) or base station (eNB) determines a threshold transmission power for a transmission frequency of the device. The device also determines a signal strength of the satellite-based positioning system signal at the device. The device then controls a transmission property of the device based on the signal strength of the satellite-based positioning system signal when a transmission power of the device at the transmission frequency satisfies the threshold. The device may also determine that reception of the satellite-based positioning system signal by the second device is likely to be affected by a transmission from the device at a transmission power that satisfies the threshold and control the transmission property when reception of the satellite-based positioning system signal is likely to be affected.

Abstract: The present disclosure describes a method and an apparatus for communicating during a network listen (NL) mode at a base station. For example, a method is provided for communicating during a network listen (NL) mode at a base station. The example method may include generating a first random number during a first time slot of the NL mode and setting a value of a counter at the base station to the random number generated at the base station. A determination is made whether the base station detects at least one new neighbor base station during the first time slot and the value of the counter is decreased when at least one new neighbor base station is detected during the first time slot. The base station transmits a signal during the first time slot when the value of the counter is determined to be zero.

Abstract: Described herein are techniques for reducing interference to non-cellular communications on an unlicensed band by a network entity sending/receiving cellular communications on the unlicensed band. For example, the technique may involve accessing a list of channels for cellular communication on the unlicensed band, the list having the channels in an order of priority for reducing interference to non-cellular communication on the unlicensed band. The technique may involve determining an interference criteria for a received signal, the interference criteria being based at in part on at least one of a received signal strength indicator (RSSI) or a duty cycle of the received signal. The technique may involve going through, in the order of priority, each channel in the list to identify a first channel that satisfies the interference criteria.

Abstract: 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. 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. Applying the one or more filters may include applying an UL RSSI filter to the one or more femto nodes to determine whether presence of the device causes a rise in UL RSSI measured at the one or more femto nodes.

Abstract: Methods and apparatuses are provided for avoiding membership verification for a non-closed subscriber group (CSG) user equipment (UE) communicating with a femto node advertising restricted access. A femto node or femto gateway can receive configuration information specifying to refrain from performing membership verification for UEs communicating with a femto node. Based on such information, the femto node or femto gateway can communicate registration information for a registration request received from a non-CSG UE without performing membership verification. Additionally or alternatively, femto nodes can register non-CSG UEs as CSG UEs to mitigate membership verification at femto gateways, request that femto gateways refrain from performing membership verification, and/or the like. In this regard, the femto node can use restricted access parameters for purposes other than restricting access.

Abstract: Aspects of the present disclosure relate to methods and apparatus for spectrum access server support of resource assignments based on radio access network coexistence information. An example method generally includes obtaining information regarding capability of different entities requesting use of the shared radio resources, estimating compatibility between the different entities based on the information, and allocating the shared radio resources to the different entities based on the estimated compatibility.

Abstract: An apparatus, configured to communicate with other apparatuses in a wireless network and operating in a frequency-division duplexing mode, can be caused to refrain from transmitting during a number of subframes of a frame of a downlink frequency band prior to a detection of a radar transmission, can be caused to send a first signal, related to monitoring for the radar transmission, to a second apparatus, and can be caused to change the number of the subframes of the frame of the downlink frequency band in response to an event that can be an increase or a decrease in a load of the apparatus or the detection of the radar transmission. Optionally, placement of the subframes within the frame of the downlink frequency band can correspond to placement of subframes that are designated for an uplink communication within a frame configured in accordance with the Long-Term Evolution Time-Division Duplex standard.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: In a handover operation an access terminal is handed over from a source access point to a target access point. To facilitate efficient identification of a target access point, a handover operation may be initiated by the target access point. A candidate frequency search also may be invoked to confirm that an access terminal identified by a target access point for a handover is in the vicinity of the target access point. A source access point may verify whether an access terminal is in a vicinity of a target access point to determine whether to perform a handover operation. A source access point may handle potential ambiguity between several target access points by sending handover commands to each of these target access points. An access terminal also may assist in the determination of whether to perform a handover operation.

Abstract: 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.

Abstract: An access point (e.g., a femto cell) that is connected in an active call with an access terminal may cooperate with that access terminal or another access terminal to derive timing information from one or more neighboring access points (e.g., macro access points). In addition, an access point may cooperate with an idle access terminal to derive timing information from one or more neighboring access points. For example, an access terminal may determine the difference between pilot transmission timing or frame transmission timing of a femto cell and a macro cell, and report this timing difference to the femto cell. Based on this timing difference, the femto cell may adjust the timing and/or frequency of its transmissions so that these transmissions are synchronized in time and/or frequency as per network operation requirements.

Abstract: In some aspects, restricted access nodes are assigned to a designated common channel while access terminals that are in active communication with a macro access node may selectively be assigned to the designated channel. In some aspects, an access terminal associated with macro access node may perform a handoff to a different carrier when the access terminal is in the vicinity of a coverage area of a restricted access node. In some aspects, an access terminal associated with a macro access node may perform a handoff to a different carrier based on location information. In some aspects, access to a restricted access node is controlled based on policy and/or based on operation of an access terminal associated with the restricted access node.

Abstract: Techniques are provided for utilizing selected inter-frame spacing, such as reduced inter-frame spacing (RIFS) or short inter-frame spacing (SIFS) to avoid failed data transmissions in a Wi-Fi network or the like. For example, there is provided a method, operable by a transmitter node or entity, such as, for example, an access point (AP), that may involve sending a data transmission in a data aggregation mode, the data transmission comprising aggregated MAC protocol data units (A-MPDUs). The method may involve monitoring for and detecting potential short interference bursts in the network. The method may involve re-sending the data transmission in a data bursting mode, the data transmission comprising back-to-back data packet bursts separated by a selected inter-frame spacing.

Abstract: A multi-mode access point supports different radio access technologies (e.g., Wi-Fi and cellular) for serving multi-mode access terminals. To provide improved service for such an access terminal, the access point may redirect the access terminal from a first type of radio access technology to a second type of radio access technology under certain circumstances. A decision to invoke such a redirection may be based on, for example, at least one of: traffic conditions on the first type of radio access technology, traffic conditions on the second type of radio access technology, and whether a backhaul for the access point is currently a bottleneck for access point communication.

Abstract: Systems and methods for dynamically adjusting the transmission time interval (TTI) for a communications system are presented. The described aspects provide for dynamically adjusting the TTI in a communication session between a base station or nodeB and a wireless device or user equipment between a shorter TTI, which can provide increased data throughput and lower power consumption, and a longer TTI, which can provide more rugged communication link connections. By dynamically adjusting the TTI, the communications link can be optimized for the given communication channel conditions. Determinations, based on indicia related to the communications system conditions, can be employed in dynamic TTI adjustment. These determinations can be formed centrally at the Radio Network Controller (RNC), at the RNC supplemented with user equipment (UE) available information, or formed in a distributed manner between the RNC and UE across a communications system.