Abstract: A user equipment (UE) performs wireless communication by starting a scan of an absolute radio frequency channel number (ARFCN) configured for performing a narrowband communication. The UE determines, based on a spectral characteristic of a phase of a signal in the ARFCN, whether a cellular communication is deployed in the ARFCN. The UE may then terminate the scan of the ARFCN in response to the spectral characteristic of the phase of the signal in the ARFCN indicating that the cellular communication is deployed in the ARFCN. Alternatively, the UE may proceed with a synchronization signal search on the ARFCN in response to the spectral characteristic of the phase of the signal in the ARFCN indicating that the cellular communication is not deployed in the ARFCN.

Abstract: A user equipment (UE) performs wireless communication by starting a scan of an absolute radio frequency channel number (ARFCN) configured for performing a narrowband communication. The UE determines, based on a spectral characteristic of a phase of a signal in the ARFCN, whether a cellular communication is deployed in the ARFCN. The UE may then terminate the scan of the ARFCN in response to the spectral characteristic of the phase of the signal in the ARFCN indicating that the cellular communication is deployed in the ARFCN. Alternatively, the UE may proceed with a synchronization signal search on the ARFCN in response to the spectral characteristic of the phase of the signal in the ARFCN indicating that the cellular communication is not deployed in the ARFCN.

Abstract: A method of performing wireless communication includes accumulating, by a user equipment (UE) during initial cell search, samples of received data over a maximum front-end bandwidth of the UE. The method also includes splitting the samples into smaller, non-overlapping spectrum chunks, and performing correlation-based detection on one or more of the smaller, non-overlapping chunks. The method further includes detecting a wireless communication system based on results of the correlation-based detection.

Abstract: Minimizing conflicts between different radio access technologies (RATs) is disclosed herein which include monitoring, by a user equipment (UE), a first use of a UE Radio Frequency (RF) resource by a first Radio Access Technology (RAT). The UE monitors a second use of the UE resource by a second RAT. The UE is served by a current serving cell in the second RAT. The UE may also determine a percentage of conflict between a first use of a UE resource by a first RAT and the second use of the UE resource by the second RAT over a predefined period of time, and initiating, by the UE, a cell reselection attempt to one or more neighboring cells of a plurality of neighboring cells serving the second RAT based on the determined percentage of conflict exceeding a predetermined threshold.

Abstract: A method of performing wireless communication includes accumulating, by a user equipment (UE) during initial cell search, samples of received data over a maximum front-end bandwidth of the UE. The method also includes splitting the samples into smaller, non-overlapping spectrum chunks, and performing correlation-based detection on one or more of the smaller, non-overlapping chunks. The method further includes detecting a wireless communication system based on results of the correlation-based detection.

Abstract: Systems, apparatuses, and methods for early termination of paging search in CSS. A user equipment (UE) may search a common search space (CSS) for a paging indication that may be repeated, up to and including, a maximal number of times in the CSS. A receive power of a reference signal (RS) may be measured for a paging candidate for a number of repetitions, which may be associated with a partial time-frequency region of the CSS. The UE may terminate the paging search based at least on the receive power of the RS and may declare no paging is present without monitoring or searching the full CSS associated with the maximal number of repetitions.

Abstract: Examples described herein relate to supplementing wireless local area network (WLAN) connection of a wireless having multiple Subscriber Identity Modules (SIMs) in which at least one of the SIMs is associated with a Designated Data Service (DDS) subscription. A method includes connecting the wireless communication device with a wireless local area network (WLAN), receiving a request for transferring data, determining whether a WLAN link rate of the wireless communication device is less than a link rate threshold, transferring the data over the WLAN in response to determining that the WLAN link rate is not less than the link rate threshold, and transferring a first portion of the data over the WLAN and a second portion of the data via the DDS subscription in response to determining that the WLAN link rate is less than the link rate threshold.

Abstract: Various embodiments described herein relate to a wireless communication device having a first Subscriber Identity Module (SIM) associated with a first subscription and a second SIM associated with a second subscription to manage communications over the first subscription and the second subscription. Some embodiments relate to identifying at least one sleep period of one or more Connected Discontinuous Reception (CDRX) cycles associated with the first subscription. Some embodiments further relate to performing at least a portion of one or more activities of the second subscription during the identified at least one sleep period.

Abstract: A method for improving device-to-device (D2D) communication in an LTE-Direct communication system includes exchanging communication information between a first user equipment (UE) and a second UE over an LTE-Direct connection with a first network resource of a first set of network resources allocated to the first and second UEs by a base station for the LTE-Direct connection. The method also includes determining, by the first UE, whether a first link quality of the LTE-Direct connection with the first network resource is below a link quality threshold. If so, the LTE-Direct connection is shifted to another network resource of the first set of network resources until an LTE-Direct connection is established that has a link quality that is equal to or greater than the link quality threshold.

Abstract: Methods, systems, and devices for wireless communication are described. Mobile devices, such as a user equipment (UE), may be able to communicate over a number of different networks, such as a WWAN and a WLAN. Similarly, the UE may be able to perform calls using a number of different networks. At times, completing a call using a WWAN may be preferable to using a WLAN, and at other times completing a call using a WLAN may be preferable to using a WWAN. As such, a UE may receive a plurality of calls, may determine that the calls originate from a same user, may determine which network to select for completing the call, and may complete the call using the selected network. Similarly, a UE may share a vocoder and/or other call components between WWAN components and WLAN components to enable simultaneous initiation of calls on different networks.

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: The disclosure generally relates to dynamic cell reselection to improve device-to-device (D2D) communications where two or more D2D peers are camped onto different cells and one or more D2D peers are located in an overlap region between the cells. For example, in various embodiments, the D2D peers may exchange one or more communication parameters over the (inter-cell) D2D connection and detect that the D2D peers are camped on different base stations (i.e., attached to different cells) based on the exchanged communication parameters. The D2D peer(s) located in the cell overlap region may then obtain measurements on the neighbor cell and a forced cell reselection may be triggered at the appropriate D2D peer(s) located in the cell overlap region such that the D2D peers are camped on the same base station, thereby converting the inter-cell D2D connection into an intra-cell D2D connection that can be more easily maintained.

Abstract: Embodiments include systems and methods for managing inter-radio access technology (IRAT) procedure concurrency between subscriptions on a multi-subscription multi-active communication device. A device processor may identify a higher-priority subscription and a lower-priority subscription on the multi-subscription multi-active communication device. The device processor may determine whether an IRAT procedure on the lower-priority subscription will overlap in time with an IRAT procedure on the higher-priority subscription. The device processor may calculate a deferral time period for the lower-priority subscription in response to determining that the IRAT procedure on the lower-priority subscription will overlap in time with the IRAT procedure on the higher-priority subscription.

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: A method for improving data throughput on a subscription includes: filtering data traffic throughput on a first subscription; comparing the filtered data traffic throughput to a threshold data rate; determining if the filtered data traffic throughput is greater than a threshold data rate value; and in response to a determination that the filtered data traffic throughput is equal to or less than the threshold data rate value, determining whether a tune away (TA) mode different than a first TA mode increases data traffic throughput on the first subscription.

Abstract: Methods and devices are disclosed for enabling improved scheduling of non-time bounded tasks across multiple subscriptions of a multi-subscription wireless communication device. A processor of the wireless communication device may determine whether the frequency utilized by a radio access technology (RAT) of a first subscription interferes with one or more frequencies utilized by RATs of other subscriptions. In response to determining that two or more of the subscriptions are non-interfering (i.e., RAT frequencies do not interfere) the processor may co-mingle non-time bounded tasks with time bounded tasks of the same subscription to produce consolidated task blocks. The task blocks may be temporal chunks of an execution queue in which tasks are scheduled continuously without interim idle periods. The processor may execute the first task block of each execution queue concurrently across subscriptions to reduce the amount of time that only a portion of the subscriptions are active or dormant.

Abstract: Embodiments include systems and methods for managing a tune away from a first network to a second network in a multi-subscription multi-standby communication device during an ongoing voice communication session on the first network. A device processor determine a timing of voice frames received from the first network. The device processor may perform a tune away to the second network at the beginning of a voice frame on the first network. In various embodiments, the device processor may use may use different tune-away patterns to reduce the impact of performing the tune away on the ongoing voice communication session.

Abstract: A method for improving device-to-device (D2D) communication in an LTE-Direct communication system includes exchanging communication information between a first user equipment (UE) and a second UE over an LTE-Direct connection with a first network resource of a first set of network resources allocated to the first and second UEs by a base station for the LTE-Direct connection. The method also includes determining, by the first UE, whether a first link quality of the LTE-Direct connection with the first network resource is below a link quality threshold. If so, the LTE-Direct connection is shifted to another network resource of the first set of network resources until an LTE-Direct connection is established that has a link quality that is equal to or greater than the link quality threshold.

Abstract: The disclosure generally relates to dynamic cell reselection to improve device-to-device (D2D) communications where two or more D2D peers are camped onto different cells and one or more D2D peers are located in an overlap region between the cells. For example, in various embodiments, the D2D peers may exchange one or more communication parameters over the (inter-cell) D2D connection and detect that the D2D peers are camped on different base stations (i.e., attached to different cells) based on the exchanged communication parameters. The D2D peer(s) located in the cell overlap region may then obtain measurements on the neighbor cell and a forced cell reselection may be triggered at the appropriate D2D peer(s) located in the cell overlap region such that the D2D peers are camped on the same base station, thereby converting the inter-cell D2D connection into an intra-cell D2D connection that can be more easily maintained.

Abstract: A method for performing parallel network acquisition attempts on a mobile communication device includes: retrieving mobile communication device information from a look-up table (LUT); identifying, based on the retrieved information, components of the mobile communication device that support one or more radio access technologies (RATs); allocating the components to at least some of the one or more supported RATs; and performing parallel network acquisition attempts for the at least some of the one or more supported RATs using the allocated components.