Abstract:
Methods and apparatus for adaptively adjusting temporal parameters such as e.g., wake-up times of digital tracking algorithms (such as timing, frequency and power control). In one exemplary embodiment, wake-up times for tracking loops are based on success/error metrics (e.g., Block Error Rate (BLER), Bit Error Rate (BER), Packet Error Rate (PER), Cyclic Redundancy Checks (CRC), etc.) of one or more previous discontinuous reception (DRX) cycles. In a second embodiment, wake-up times for tracking loops are based on residual frequency and timing errors, etc.
Abstract:
Apparatuses, systems, and methods for multi-SIM user equipment (UE) devices to perform emergency calling. A UE may receive an indication to initiate an emergency call. The UE may select a cell on which to initiate the emergency call. If a serving cell of a first SIM of the UE is not available for the emergency call, the UE may utilize information from a second SIM of the UE as part of selecting the cell on which to initiate the emergency call. The information from the second SIM may include an indication of a serving cell of the second SIM. Alternatively or in addition, the information from the second SIM may include an indication of one or more neighboring cells of the second SIM. The emergency call may be initiated via the selected cell using the first SIM.
Abstract:
Mechanisms enabling link-budget-limited (LBL) devices to more effectively perform random access may include: (1) broadcasting a Physical Random Access Channel (PRACH) configuration index (PCI) reserved for LBL devices; (2) configuring LBL devices to use a PCI that is offset from the conventional PCI of current cell; (3) configuring LBL devices to transmit PRACH messages using an alternative set of subframes, different from conventionally-defined subframe set; (4) configuring LBL devices to transmit PRACH messages on odd frames when the conventional PRACH configuration specifies even frames; (5) configuring LBL devices to generate and use extra PRACH preambles that are not used by non-LBL devices; (6) configuring LBL devices to use group B preambles while non-LBL devices are configured to use group A preambles; and (7) boosting power of a random access response message after an Nth random access failure with preamble conforming to an LBL-reserved pattern of preambles.
Abstract:
Apparatuses, systems, and methods for multi-SIM user equipment (UE) devices to search for service. A UE may determine that a first SIM of the UE is out-of-service. The UE may scan for service for the first SIM of the UE using a second SIM of the UE. An indication may be provided to the first SIM if service (or service information) is found for the first SIM. If the second SIM is also out-of-service, the UE may scan for service for the first SIM and the second SIM jointly.
Abstract:
Apparatuses, systems, and methods for multi-SIM user equipment (UE) devices to perform system selection. A UE may determine to perform system selection for a first SIM of the UE. Information, such as serving cell and/or neighboring cell information, may be obtained from a second SIM of the UE. System selection for the first SIM may be performed based at least in part on the information obtained from the second SIM.
Abstract:
Apparatuses, systems, and methods for multi-SIM user equipment (UE) devices to search for service. A UE may determine that a first SIM of the UE is out-of-service. The UE may scan for service for the first SIM of the UE using a second SIM of the UE. An indication may be provided to the first SIM if service (or service information) is found for the first SIM. If the second SIM is also out-of-service, the UE may scan for service for the first SIM and the second SIM jointly.
Abstract:
Operating a UE device having a radio configured to communicate using a first and second RAT. The UE may determine whether page decoding or other cycle conflicts (e.g., DRX cycle conflicts) are present or will occur for the first and second RAT. Upon determining a conflict, e.g., prior to the occurrence of the conflict, such as during a previous cycle, the second RAT operations may be performed at the time of the conflict and the first RAT operations may be delayed to a later time (e.g., a next cycle of the first RAT).
Abstract:
In some embodiments, an apparatus is configured to wirelessly communicate with a base station in a real-time internet protocol (IP) session using a first retransmission parameter in a first frame transmission scheme. In some embodiments, the apparatus is configured to determine a current performance metric and, based on the current performance metric, use a second, different retransmission parameter in a second frame transmission scheme for communications via the real-time IP session. In some embodiments, the retransmission parameter is a number of retransmissions or a number of hybrid automatic repeat request (HARQ) processes.
Abstract:
Methods, apparatuses and computer readable media are described that manage transmit power levels for a wireless device connected to a network access system of a wireless network. Processing circuitry in the wireless device obtains a target average transmit power level. Based on estimates of an actual average transmit power level for a sliding window of a past time period and the target average transmit power level, the processing circuitry determines a target transmit power level, a duty cycle percentage, and a transmit pattern of transmit on frames and transmit off frames for a future time period. The processing circuitry sends to the access network system signaling messages indicating non-zero valued buffer status reports for the transmit on frames and zero valued buffer status reports for the transmit off frames. Non-zero values correspond to actual amounts of pending uplink data, while zero values are sent irrespective of actual uplink buffer status.
Abstract:
Methods, apparatuses and computer readable media are described that configure wireless circuitry of a wireless communication device connected to a wireless network. Processing circuitry in the wireless communication device establishes a connection to a access network subsystem of the wireless network using a plurality of radio frequency carriers and provides an indication of wireless circuitry included therein. The wireless network provides a measurement gap configuration, and the wireless communication device suspends communication on at least one carrier and measures signals from one or more additional access network subsystems during a measurement gap time period. The wireless communication device provides a measurement report to the access network subsystem based at least in part on measured signals. In an embodiment, the wireless communication device also receives downlink communication from the wireless network during at least a portion of the measurement gap time period.