Abstract:
Methods, systems, and devices for wireless communications are described. A wireless device (e.g., a user equipment and/or base station) may select a beam configuration for a wireless transmission over a channel of a radio frequency spectrum band. The wireless device may perform a listen-before-talk (LBT) procedure on the channel using a LBT detection threshold, wherein the LBT detection threshold is based at least in part on the selected beam configuration. The wireless device may perform the wireless transmission over the channel using the selected beam configuration based at least in part on a success of the LBT procedure.
Abstract:
Methods, systems, and devices for wireless communication are described. A base station may identify a semi-static resource allocation for a device (e.g., a user equipment (UE) ). The resource allocation may be associated with autonomous transmissions from the device in an unlicensed radio frequency spectrum band. The base station may generate and provide a message for transmission to the device. The message may convey an indication of the resource allocation. The device may receive the message and use the resource allocation to identify a transmission schedule for the autonomous transmissions.
Abstract:
Methods, systems, and devices for wireless communication are described. A base station may determine a measurement scheme or uplink mode and then transmit an indication of the scheme or uplink mode to an associated user equipment (UE). The base station may identify a set of hidden nodes for the U E and configure the UE for autonomous or grant-based uplink transmissions accordingly. A UE may initiate a channel clearance scheme by transmitting a first channel clearance signal (e.g., a request-to-send message), which may include a UE identifier before transmitting an uplink message in the unlicensed radio frequency spectrum band. In response, the base station may transmit a second channel clearance signal (e.g., a clear-to-send message). In some cases, the second channel clearance signal may include control information or may be transmitted at a power level that is based on a characteristic of the UE.
Abstract:
Methods, systems, and devices for wireless communication are described. A user equipment (UE) or a base station may select an autonomous uplink mode, which may support unscheduled uplink transmissions in an unlicensed radio frequency spectrum band. A UE may initiate a channel clearance scheme by transmitting a first channel clearance signal (e.g., a request-to-send message), which may include a UE identifier, to a base station, before transmitting an uplink message in the unlicensed radio frequency spectrum band. In response, the base station may transmit a second channel clearance signal (e.g., a clear-to-send message) to the UE which, in some cases, may include control information. In some examples, the second channel clearance signal may be transmitted at a power level that is based on a characteristic of the UE. After receiving the second channel clearance signal, the UE may transmit an uplink message in the autonomous uplink mode.
Abstract:
A method or apparatus for configuring OLPC parameters for uplink communications in a cellular wireless network includes determining an estimated number of neighbor cells deployed within radio range of a cell, and configuring OLPC parameters for uplink communications, based on the estimated number of neighbor cells. Determining the estimated number of neighbor cells may include measuring respective signal strengths of the neighbor cells using network listen functionality. At least two OLPC intermediate parameters P0 and a may be selected from a data table, based on the estimated number of neighbor cells. A path loss statistic may be determined, based on UE measurement reports including path losses of UEs to itself and other cells. The OLPC parameters may be selected based on the path loss statistic and P0 and a, and/or adapted based on at least one of UE power headroom reports or overload indicators received from the neighbor cells.
Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
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.
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.