Qualcomm Incorporated

Divaydeep Sikri

Mungal Singh Dhanda

Farrokh Abrishamkar

Jafar Mohseni

Hassan Rafique

Neha Goel

Nico De Laurentiis

Zhi-Zhong Yu

Farrukh Rashid

Abeezar A Burhan

Bahadir Canpolat

Cetin Altan

Michael Lee McCloud

Simon James Walke

Yingqun Yu

Mukund Agarwal

Ming Yan

Kishore Kumar Yannakula

William Stancer

Raghu Narayan Challa

Insung Kang

Chih-Ping Hsu

Francis Ming-Meng Ngai

Helena Deirdre O'Shea

Subbarayudu Mutya

Sathish Krishnamoorthy

Wenjun Li

Krishna Rao Mandadapu

Raghavendra Shyam Anand

Nigel Phillip Robinson

Philip J Children

Shawn C Morrison

Erdogan Dede

Anindya Majumder

Hieu Trung Van

Ramesh Kumar Gengiti

Philip John Charles Children

Nita E Joseph

Cetin Atlan

Wolfram Pieperhoff

Lukasz Bednarz

Farrakh Abrishamkar

Ken Delgado

Philip J C Children

Marc Robert Cherry

Antonio De Angelis

Syed Hamza Rafique

A method includes: receiving a first speech frame; identifying a first codec mode based at least in part on a Codec Mode Command (CMC) comprising the first speech frame; identifying a second codec mode based at least in part on a downlink (DL) Codec Mode Indication (DCMI) comprising the first speech frame; determining, based at least in part on a current uplink (UL) codec mode, to apply one of the first codec mode, the second codec mode, and a third codec mode having a higher bit rate than the first codec mode; and applying one of the first codec mode, the second codec mode, and the third codec mode. Apply the first codec mode when the RxLev and RXQual are determined not to exceed a predetermined threshold, and applying second or third codec modes otherwise.

Optimizing frequent in-band signaling in dual SIM dual active devices by comparing signal level (RxLev) and quality (RxQual) against predetermined thresholds

Various embodiments implemented on a multi-subscription-capable communication device (e.g., a mobile communication device capable of supporting more than one wireless subscription) enable a data connection for a blanked subscription to be kept alive during transmit (Tx) blanking by ensuring at least one Packet Data Traffic Channel (PDTCH) transmission is sent to the network before the network's counter for PDTCH transmissions expires.

Method to prevent data stalls due to blanking in multi-SIM multi-active devices

A method for scheduling monitor activity for a mobile communication device includes: receiving less than all of a plurality of bursts for a first subscription; decoding a packet header by decoding the received bursts; determining if a decoded temporary flow identity (TFI) matches a TFI for the mobile communication device; and in response to a mismatch between the decoded TFI and the TFI for the mobile communication device: inhibiting reception of a remaining plurality of bursts; and scheduling the monitor activity in timeslots reserved for the remaining plurality of bursts for the first subscription that do not conflict with transmissions on a second subscription.

Power monitor scheduling in dual data mode

A dual SIM dual active (DSDA) mobile station can perform a service acquisition procedure for a first subscription, while simultaneously performing a registration procedure for a second subscription. In one aspect of the disclosure, the RX (receive) of the victim during acquisition is delayed and yields to the TX (transmit) of the aggressor that is performing registration. In accordance with another aspect of the disclosure, decode failures on good cells due to RX blanking on the victim subscription during acquisition can be reduced or avoided.

Mitigating receive-transmit conflicts in multiple SIM card communications

Methods and devices are disclosed for enabling improved performance on a single-transmit multi-SIM wireless communication device. The wireless communication device may detect a voice communication on a modem stack associated with the first SIM and a data communication on a modem stack associated with the second SIM. The wireless communication device may identify a data rate used by the voice codec to encode uplink traffic channel (TCH) bursts in the voice communication, and determine whether the identified data rate used by the voice codec permits TCH burst cancellation. If it is determined that the identified data rate used by the voice codec permits TCH burst cancellation, the wireless communication device may downgrade a portion of the uplink TCH bursts scheduled on the modem stack associated with the first SIM.

System and methods for cancelling uplink traffic channel bursts to improve performance in a multi-SIM wireless communication device

Aspects of the present disclosure provides a wireless communication apparatus configured to handle adjacent-channel interference (ACI) and spur. The apparatus receives a signal utilizing a communication interface. The apparatus is configured to perform a single discrete Fourier transform (DFT) on the signal to generate frequency domain data. The apparatus is further configured to determine respective energy of a plurality of adjacent channels of the signal utilizing the frequency domain data. The apparatus is further configured to determine one or more potential interfering channels among the adjacent channels, wherein each of the potential interfering channels has an energy greater than a qualifying threshold. The apparatus is further configured to identify one or more dominant interfering channels from among the potential interfering channels. The apparatus is further configured to detect ACI based on the one or more dominant interfering channels.

Adjacent-channel interference and spur handling in wireless communications

Devices and methods are configured for resolving control channel transmission collision in a mobile device having first and second subscriptions (SUBs) when the first SUB is in an active voice call and the second SUB is in a held voice call. The devices and methods involve determining whether a control channel transmission of the first SUB would collide with a control channel transmission of the second SUB. In response to determining that the first SUB control channel transmission would collide with the second SUB control channel transmission, the devices and methods alternate the first SUB control channel transmission and the second SUB control channel transmission to avoid collision.

Control channel collision resolution

Embodiments are provided herein for reducing neighbor cell monitoring by a mobile communication device that may include measuring a channel condition of the cell serving the idle network subscription, determining whether the measured channel condition of the cell serving the idle network subscription satisfies a threshold value, and in response to determining that the measured channel condition of the cell serving the idle network subscription satisfies the threshold value, reducing a frequency at which neighbor cells associated with the idle network subscription are monitored and monitoring the neighbor cells associated with the idle network subscription according to the reduced frequency.

System and method for controlling neighbor cell monitoring activity based on conditions of serving cell in a mobile communication device

Embodiments of the present invention include devices, systems and methods for optimized camping on a cell. One method can include beginning a power scan of a range of radio-frequency channel numbers as part of an acquisition. Power can be measured for a first set of radio-frequency channel numbers at a time using adjacent channel interference detection. An average power can be computed for each radio-frequency channel number once the range has been scanned a predetermined number of times. Other aspects, embodiments and features are also claimed and described.

Power scan optimization

Methods and devices are disclosed for enabling improved transmission performance on a multi-SIM wireless communication device. The wireless device may detect a voice communication in a held state on a modem stack associated with the first SIM and an active voice communication on a modem stack associated with the second SIM. The wireless device may detect a conflict between at least one silence descriptor (SID) frame scheduled for transmission by the modem stack associated with the first SIM and a transmit opportunity for the modem stack associated with the second SIM. Once the wireless device identifies a SID frame transmission rate for the modem stack associated with the first SIM, the wireless device may apply a reduction scheme to the SID frames scheduled to be transmitted by the modem stack associated with the first SIM.

System and methods for reducing silence descriptor frame transmit rate to improve performance in a multi-SIM wireless communication device

Access terminals are adapted to receive and transmit data during one or more frames in a multiframe. Power measurements for a neighboring cell can be scheduled during one or more frames not intended for power measurements. In some examples, the one or more frames not intended for power measurements can include an Idle frame and/or a Packet Timing Advance Control Channel (PTCCH) frame in a 52-frame multiframe structure, as well as an Idle frame and/or a Slow Associated Control Channel (SACCH) frame in a 26-frame multiframe structure. Some access terminals may be adapted for facilitating multiple subscriptions, and may operate at least substantially simultaneously in a Connected mode subscription and an Idle mode subscription. In such instances, a neighboring cell for which power measurements are performed may be associated with the Connected mode subscription and/or the Idle mode subscription. Other aspects, embodiments, and features are also claimed and described.

Methods and devices for increasing data throughput by scheduling of power measurements in a wireless communications system

A method for wireless communication is described. A slow associated control channel block is received. It is determined that the slow associated control channel block fails an integrity check. A correlation level between the slow associated control channel block and one or more stored slow associated control channel blocks is determined. The stored slow associated control channel blocks are set based on a maximum correlation level. Other aspects, embodiments, and features are also claimed and described.

Enhanced slow associated control channel (ESACCH)

Devices, systems, articles of manufacture, and methods scheduling subscription procedures on a wireless communication device are described. According to some embodiments, the wireless communication device communicates with a first subscription. The wireless communication device can perform a concurrent burst-level tune-away procedure with a second subscription. The wireless communication device also returns to communication with the first subscription. The tune-away procedure enables a communication device to interact with multiple subscriptions (e.g., multiple SIM-based subscriptions). Other aspects, embodiments, and features are also claimed and described.

Optimized scheduling subscription procedures on a wireless communication device

Aspects of the present disclosure relate to a user equipment (UE) and a method of wireless communication using the UE that includes a first transceiver and a second transceiver. The method includes determining that the first transceiver is scheduled to communicate using a first transmission simultaneous to the second transceiver being scheduled to communicate using a second transmission, and altering an operation of at least one of the first and second transceivers to mitigate battery voltage droop due to simultaneous transmissions of the transceivers. Other aspects, embodiments, and features are also claimed and described.

Apparatus and method for mitigating voltage droop in a dual-transceiver wireless communication device

Systems and methods of receiving data in a communication system are disclosed. The methods include equalizing a plurality of samples to suppress intersymbol interference and provide a first set of detected bits based on a first set of reference bits comprising a training sequence on a first iteration. The methods further include suppressing co-channel interference in the plurality of input samples and provide a set of suppressed samples based on a second set of reference bits comprising the first set of detected bits on a second iteration. The methods further include equalizing the set of suppressed samples to suppress intersymbol interference and provide a second set of detected bits based on the second set of reference bits on the second iteration.

Hybrid SAIC receiver

Growing community of inventors

Farnborough, United Kingdom

Divaydeep Sikri