Abstract:
Various embodiments for calibrating receive chains on a mobile communication device may include identifying a calibrated receive chain and an un-calibrated receive chain of the mobile communication device and obtaining a first series of gain measurements for the calibrated receive chain and a second series of gain measurements for the un-calibrated receive chain. The mobile communication device may determine a path gain difference between the calibrated receive chain and the un-calibrated receive chain based on the first series of gain measurements and the second series of gain measurements, and compensate a gain of the un-calibrated receive chain using the path gain difference.
Abstract:
Various embodiments may include methods for handling collisions between a first subscription and a second subscription of a wireless communication device. In various embodiments, a processor of the wireless communication device may determine whether there are persistent collisions between periodic paging wake-ups on the first subscription and periodic inter-RAT measurements on the second subscription. When persistent collisions are detected, the time for performing each inter-RAT measurement on the second subscription may be extended sufficient to enable completing inter-RAT measurements on the second subscription. The amount by which the time for performing inter-RAT measurements is extended may depend upon the timing and duration of the persistent collisions.
Abstract:
Embodiments include systems and methods for managing tune-way in a multi-subscription communication device. A processor of a multi-subscription communication device may determine a first signal strength of a first cell signal and a second signal strength of a second cell signal. The processor may perform a tune-away procedure to a weaker of the first cell signal and the second cell signal. Embodiments may include determining signal strengths of each component carrier of the first cell signal and the second cell signal.
Abstract:
Mobility management is described for simultaneous, multiple radio access technology (RAT) user equipments (UEs). When the UE detects a mobility event that would trigger transfer of a communication service from a first RAT to a second RAT, the UE determines whether there is an existing connection to a base station of the second RAT and uses cached measurement information related to this base station to influence or weight how the transfer is performed/handled/managed.
Abstract:
Various embodiments include methods implemented on a mobile communication device for sharing network information among subscriptions when both a first subscription and a second subscription are in an idle mode. The methods may include determining whether the first subscription and the second subscription share a network operator and are camped on a same base station. If so, the first subscription may receive network information from the base station and store the network information in a shared memory of the mobile communication device that can be accessed by the second subscription. The second subscription may then perform some idle mode operations using the network information stored in the shared memory.
Abstract:
Methods and devices are disclosed for enabling improved performance on a multi-subscriber identification module (multi-SIM) wireless communication device. The wireless communication device may detect transmit activity on a modem stack associated with the first SIM, and detect a communication activity scheduled on a modem stack associated with the second SIM having a higher priority. If the transmit activity on the modem stack of the first SIM will impede the communication activity, the wireless device may identify subframes on the modem stack associated with the first SIM that overlap in time with the communication activity and for each identified subframe, blank symbols that conflict with the communication activity to develop a partially blanked subframe. The partially blanked subframe may be transmitted according to a blanking policy.
Abstract:
Methods and devices are disclosed for managing diversity tune-away on a wireless communication device configured with at least two radio frequency (RF) receive resources associated with a connection in a high speed data network. The wireless device may monitor data communications and downlink channel conditions in the high speed data network, and determine whether a diversity tune-away mode has been entered. Upon determining that the diversity tune-away mode has been entered, the wireless device may perform a deliberate acknowledgment procedure by ignoring normal error detection for received data and sending an acknowledgment message for the received data to the high speed data network. The wireless device may determine whether the diversity tune-away mode has ended, and in response to determining that the diversity tune-away mode has ended, and halt the deliberate acknowledgment procedure in response to determining that the diversity tune-away mode has ended.
Abstract:
Methods and devices for implementing dynamic receive mode management to improve data throughput and paging performance on a multi-subscriber identification module (SIM) wireless communication device may include detecting, on a protocol stack associated with a first SIM, an active communication in a first network, detecting, on a protocol stack associated with a second SIM, an idle mode paging cycle in a second network, prompting entry into a selected dual receive mode on the shared RF resource, and monitoring at least one performance metric for the idle mode paging cycle associated with the second SIM while in the dual receive mode. Based on the monitored performance metric while in the dual receive mode, the wireless communication device may determine whether paging performance is degraded for the second SIM, and if so, trigger entry into a fallback mode on the shared RF resource.
Abstract:
Methods, devices, and systems embodiments enable management of service preemption of at least one of a plurality of subscriptions that utilize a plurality of radio-frequency (RF) chains on a multi-Subscriber-Identity-Module, multi-active communication device in a manner that can accommodate a variety of different RF hardware components and configurations. Various embodiments provide methods implemented by a processor to manage service preemption. In response to detecting that a service of a second subscription initiated on a first RF chain is or will preempt a service of a first subscription that is also serviced by the first RF chain, the processor may determine whether there is a similar service on a second RF chain that may be used as a substitute for the first subscription's preempted service and, when available, the processor may configure the first subscription to begin utilizing the substitute service until the first RF chain is available.
Abstract:
The various embodiments include methods and apparatuses for canceling nonlinear interference during concurrent communication of multi-technology wireless communication devices. Nonlinear interference may be estimated using a multilayer perceptron neural network with Hammerstein structure by dividing an aggressor signal into real and imaginary components, augmenting the components by weight factors, executing a linear combination of the augmented components, and executing a nonlinear sigmoid function for the combined components at a hidden layer of multilayer perceptron neural network to produce a hidden layer output signal. At an output layer, hidden layer output signals may be augmented by weight factors, and the augmented hidden layer output signals may be linearly combined to produce real and imaginary components of an estimated jammer signal. A linear filter function may be executed for the components of the jammer signal, and to produce a nonlinear interference estimate used to cancel the nonlinear interference of a victim signal.