Patent application number | Description | Published |
20100246427 | METHOD AND APPARATUS FOR SUPPORTING COMMUNICATION IN LOW SNR SCENARIO - Techniques for supporting communication for wireless devices in a wireless network are described. The wireless network may support a first physical channel having a first minimum SNR for reliable reception. Some wireless devices may require operation at a lower SNR. In an aspect, low SNR operation may be supported by transmitting data on a second physical channel that can be reliably received at a second minimum SNR that is lower than the first minimum SNR. In another aspect, low SNR operation may be supported by transmitting data on both the first and second physical channels. In yet another aspect, low SNR operation may be supported by transmitting data in multiple instances of the first and/or second physical channel. In yet another aspect, low power operation may be supported by transmitting the second physical channel in a portion of the system bandwidth instead of across the entire system bandwidth. | 09-30-2010 |
20100246469 | METHODS AND SYSTEMS FOR ADAPTIVE BROADCASTING AND MULTICASTING IN A WIRELESS NETWORK - Systems and methods are provided for adaptively transmitting information to a plurality of nodes in a local area of a base station. The base station receives channel quality information from one or more of the nodes within the local area, selects a transmission rate for a downlink transmission corresponding to the lowest channel qualities, and simultaneously transmits a message to the nodes at the selected transmission rate. | 09-30-2010 |
20100246518 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION VIA UPPER LAYER - Techniques for supporting communication for wireless devices in a wireless network are described. The wireless network may support transmission of control information on a first physical channel having a first minimum SNR for reliable reception. Some wireless devices may require operation at a lower SNR. In an aspect, low SNR operation may be supported by transmitting control information for a lower layer (e.g., Layer | 09-30-2010 |
20110170440 | METHOD AND APPARATUS FOR DETECTING TRANSMISSION SIGNALS - Certain aspects of the present disclosure provide methods, apparatus, and computer-program products for the detection of potentially interfering user equipment (UE) in the proximity of a detecting entity. The detecting entity may be a base station or a UE. The detecting entity may take one or more actions in response to the detection in an effort to mitigate interference. | 07-14-2011 |
20110292915 | MULTIPLE CARRIER ACTIVATION/DEACTIVATION IN WIRELESS COMMUNICATIONS - Systems, methods and apparatuses are provided that facilitate selecting resources, such as time slots, subframes, etc., for performing bandwidth switching related to activating and/or deactivating one or more carriers. A data portion of one or more subframes can be selected for performing bandwidth switching. In addition, a device can determine whether one or more downlink grants are received in the one or more subframes, and can avoid selecting such subframes. The device can alternatively perform the bandwidth switching and request retransmission of the data portion. Additionally or alternatively, the device can determine a type of the one or more subframes and/or signals transmitted in the one or more subframes to determine whether to perform bandwidth switching in the subframes. The bandwidth switching can include changing a sampling rate, reconfiguring frequency filters, modifying a local oscillator, etc. | 12-01-2011 |
20120113866 | INTER-FREQUENCY MEASUREMENT CONTROL IN A MULTI-CARRIER SYSTEM - Techniques are disclosed for signaling a capability to operate in one or more carrier aggregation configurations and measurement gap requirements corresponding to the carrier aggregation configurations. Each carrier aggregation configuration may include one or more frequency bands and a mobile terminal can provide an indication of its measurement gap requirements for all or a subset of its supported frequency bands when operating in the carrier aggregation configurations. The measurement gap requirements may correspond to a physical or logical configuration of receiver resources and the signaling may be initiated by the mobile terminal or by a base station in communication with the mobile terminal. | 05-10-2012 |
20120115537 | CARRIER GROUPING FOR POWER HEADROOM REPORT - Methods, systems, devices, and computer program products are disclosed which facilitate the transmission and reception of power headroom reports for component carriers in a multi carrier wireless communication system. A mobile device may determine available power headroom in a multicarrier configuration through a calculation of a maximum transmit power associated with a first component carrier (CC) in a subset of the CCs. The calculation can account for increases in transmit power of other component carriers in the subset by proportionally increasing transmit powers for each of the subset of CCs. A power headroom may be identified for one or more of the CCs based on a result of the calculation, and a power headroom report (PHR) may be generated that includes the power headroom available for the first CC. | 05-10-2012 |
20120147801 | SPECIFIC ABSORPTION RATE BACKOFF IN POWER HEADROOM REPORT - Uplink transmission power adjustment is provided by a mobile device receiving an uplink transmission grant from a serving base station. The mobile device determines a maximum power reduction for uplink transmissions and a SAR-related power reduction. The mobile device compares these values and adjusts transmission power according to the SAR-related power reduction in response to the SAR-related power reduction exceeding the maximum power reduction. A power headroom report is generated when the determined SAR-related power reduction exceeds a previous SAR-related power reduction. This power headroom report is transmitted from the mobile device to the serving base station under various conditions. | 06-14-2012 |
20130196603 | FLEXIBLE RADIO RESOURCE MANAGEMENT (RRM) MEASUREMENTS FOR WIRELESS NETWORKS - Methods and apparatus for performing reference signal (RS) metric measurements in different parts of a channel bandwidth are described. One example method generally includes receiving signaling indicating one or more frequency bands within an operating frequency band of a current serving cell for performing reference signal (RS) metric measurements, performing the measurements on the one or more frequency bands, and reporting the measurements. | 08-01-2013 |
20140050194 | MULTIPLE TIMING ADVANCE GROUPS (TAGS) FOR UL CARRIER AGGREGATION (CA) - Techniques are provided for assigning aggregated component carriers. For example, a method may include receiving from a user equipment (UE) a set of rules associated with timing advance groups (TAGs) comprising allowable combinations of frequency bands. The method may include determining frequencies of aggregated component carriers. The method may include assigning the aggregated component carriers to at least one timing advance group based on the allowable combinations of frequency bands and the determined frequencies of the aggregated component carriers. | 02-20-2014 |
20140098754 | METHODS AND APPARATUS FOR IMPROVED RESOURCE MANAGEMENT IN LTE - Certain aspects of the present disclosure relate to methods and apparatus for improved resource management in LTE. Methods and apparatus are provided for receiving, by a user equipment (UE), signaling providing an indication of a set of one or more subframes in which a set of resources are non-usable for one or more functions performed by the UE, or determining of the set by the UE, and excluding the non-usable resources when performing the one or more functions. Methods and apparatus are provided for identifying, by a base station (BS), a set of one or more subframes in which a set of resources might not be suitable for one or more functions performed by a user equipment (UE) and transmitting signaling, to the UE, providing an indication the set of resources are non-usable in the one or more subframes for the one or more functions performed by the UE. | 04-10-2014 |
20140126552 | AUTONOMOUS DENIAL CONFIGURATIONS FOR MULTI-RADIO COEXISTENCE - To manage in-device coexistence between multiple radios for different radio access technologies (RATs) on a wireless device, an autonomous denial rate may be specified for the wireless device from a base station of a first RAT. The communications for a second RAT of the wireless device may then be adjusted based on the autonomous denial rate. The wireless device may also request TDM or FDM communication configurations for the first RAT to manage communications. Measurement reporting may be scheduled around denied uplink subframes of the first RAT. | 05-08-2014 |
20140307623 | UE INITIATED SCELL CONNECTION ESTABLISHMENT - Methods, systems, devices, and apparatuses are described for wireless communications in which a wireless device may identify a small cell (e.g., SCell) and establish an independent connection with the small cell based at least in part on selection parameters received from a macro cell (e.g., PCell). The selection parameters may include power and/or quality parameters, as wells as a set of candidate cells from which to make the selection. The macro and small cells may be in communication with each other but need not be associated with the same base station (i.e., are not collocated). Once the small cell connection is established, the device may communicate with both cells concurrently. Available uplink data and/or downlink data may trigger the need for the device to connect with the small cell. For example, the small cell connection may be used to communicate uplink/downlink data associated with certain quality-of-service (QoS) and/or bearer identifier. | 10-16-2014 |
20140349701 | UPLINK POWER HEADROOM MANAGEMENT FOR CONNECTIVITY WITH LOGICALLY SEPARATE CELLS - Power headroom management in uplink carrier aggregation for connectivity with logically separate cells of a wireless communications system is performed by a network entity, alone or in combination with another network entity, one or more mobile entities, or both. This may include determining an uplink power allocation across at least two independently controlled cells of a wireless communication network for a mobile entity served by at least two independently controlled cells of a wireless communication network, subject to a total PH constraint for uplink transmissions by the mobile entity. A network entity may then manage PH reporting for determining the uplink power allocation by the uplink serving cells, based on the determined uplink power allocation. Managing the PH reporting may be performed by at least one of: explicit coordination between the at least two independently controlled cells, implicit coordination between the at least two independently controlled cells, or configuring PH reporting from the mobile entity by at least one of the at least two independently controlled cells. | 11-27-2014 |