Qualcomm Incorporated

Apple Inc.

Sharif Ahsanul Matin

Nate Chizgi

Wei Zhang

Prashant Udupa Sripathi

Sitaramanjaneyulu Kanamarlapudi

Harish Venkatachari

Krishna Chaitanya Mukkera

Ramesh Chandra Chirala

Ning He

Atul Arvind Salvekar

Rohit Kapoor

Liangchi Hsu

Je Woo Kim

Messay Amerga

Nitin Kasturi

Shashank Vishwanatha Maiya

Jimmy Chi-Wai Chui

Ravi Gopalan

Praveen Peruru

Mohammad J Al-Saleh

Iyab Issam Sakhnini

Dan Zhang

Yi Zhang

Ansah Ahmed Sheik

Feng Lu

Christian Hofmann

Vansh Pal Singh Makh

Yi Su

Carsten Aagaard Pedersen

An-Swol Clement Hu

Vijay Marwah

Chulong Chen

Madhup Chandra

Sagar Shah

Mohamed Abdelrazek El-Saidny

Roee Cohen

Valibabu Saladi

Marian Madan

Rajat Sharma

Deepu Alex

Atin Kumar

Linda Bai

Ahmad Bilal Hasan

Jun Xing

Ahmad Amin Thalji

Tariq Saleh Alsheikh-Eid

Srivatsan Rajagopalan

Prasanta Samal

Sagar Bharatkumar Shah

An apparatus to be implemented in a user equipment (UE), the apparatus comprising hardware circuitry to activate a timer for transmitting a measurement report to a base station; output a filtered signal value from a measured signal using a first parameter; determine a trend in signal quality based on the first filtered signal value and a second filtered signal value based on a second parameter; or some processing of the values either from the first filter or from the received signal; and determine whether to deactivate the timer based on the trend in signal quality. The filtered signal can be generated using a first layer 3 filter using network-configured parameters and a second layer 3 filter using proprietary parameters. Processing of the values can also be done using proprietary parameters and techniques.

Reducing errant measurement report timer deactivation using layer 3 filter augmentation

Aspects of the present disclosure provide an apparatus and methods for operating the same that can improve out-of-sync and radio link failure handling in a W-CDMA network. A user equipment (UE) establishes a packet switched (PS) connection between the UE and a base station, wherein the PS connection includes a Fractional Dedicated Physical Channel (F-DPCH). The UE configures an in-sync threshold (Q) and an out-of-sync threshold (Q) for the F-DPCH, wherein values of the Qand Qare set higher than those of corresponding Qand Qof a Dedicated Physical Channel (DPCH). The UE further estimates a downlink (DL) Signal to Interference Ratio (SIR) based on one or more transmit power control (TPC) commands of the F-DPCH, and determines whether to release the PS connection based on a comparison of the estimated SIR and Qof the F-DPCH.

Apparatus and method for handling out-of-sync and radio link failure with fractional DPCH calls

The disclosure provides for reporting a channel quality indicator (CQI) in wireless communications. A user equipment (UE) may determine that a calculated CQI value to be reported in a current sub-frame is affected by a deterministic null scheduling on a downlink channel. The UE may determine a compensatory CQI value. The UE may report the lesser of the calculated CQI value and the compensatory CQI value in response to determining that the calculated CQI value is affected by the deterministic null scheduling. In an aspect, the deterministic null scheduling is associated with a compressed mode gap. The UE may determine whether the calculated CQI value is affected by the deterministic null scheduling by determining whether the current sub-frame is within a first time period before the start of the compressed mode gap or within a second time period after the end of the compressed mode gap.

Channel quality reporting for deterministic null scheduling

Various aspects of the present disclosure provide for conditionally disabling discontinuous reception (DRX). For example, DRX may be disabled if there is a loss of DRX synchronization, a loss of signal radio bearer traffic, a poor radio frequency condition, a low signal-to-interference ratio estimate, a low transmit power condition, or a drop in transmit power. Various aspects of the present disclosure provide for determining that an access terminal and the network are not in synchronization (e.g., DRX synchronization), and attempting to re-synchronize the access terminal and the network. In cases where a loss of DRX synchronization involves one entity having DRX enabled while another entity has DRX disabled, DRX may be temporarily disabled until synchronization is restored. In cases where a loss of DRX synchronization involves different entities using different subframe indices, the subframe index used by one of the entities may be changed to restore synchronization.

Discontinuous reception techniques

Aspects of the disclosure are directed to estimating a signal to interference ratio. A signal energy estimate corresponding to a received data transmission is generated. A noise to interference ratio estimate corresponding to the received data transmission is generated. A bias, corresponding to the noise to interference ratio estimate, is subtracted from the signal energy estimate. A signal to interference ratio estimate is determined corresponding to the signal energy estimate less the bias, and the noise to interference ratio estimate.

Apparatus and method for sire bias compensation

Methods and devices for improving performance on a wireless communication device having at least a first subscriber identity module (SIM) and a radio frequency (RF) resource may include detecting, on a modem stack associated with the first SIM, an active communication in a first network that supports high speed downlink packet access (HSDPA). During the active communication in the first network, the wireless communication device may detect a signal disruption period, and determine whether an operational downlink mode for the modem stack associated with the first SIM does not match a corresponding downlink mode represented in the first network. Upon determining that the operational downlink mode for the modem stack associated with the first SIM does not match the corresponding downlink mode represented in the first network, the wireless communication device may trigger an internal instruction to transition to a new downlink mode.

System and methods for avoiding call performance degradation due to missed downlink control signal in a wireless communication device

A method and apparatus for radio resource control (RRC) state transitions of a user equipment (UE) are provided. For the RRC state transitions of the UE, for example, a reconfiguration message is received at the UE while the UE is in a cell dedicated channel (CELL_DCH) state of the RRC states. The reconfiguration message is configured to transition the UE from the CELL_DCH state to a non-dedicated channel state of RRC states. A plurality of acknowledgement procedures is sent on an uplink to the network, in response to the received reconfiguration message causing the UE to transition from the CELL_DCH state to the non-dedicated channel state.

DCH to non-DCH state switching of user equipment in UMTS

Methods and apparatus for communication comprise determining whether a communication characteristic value meets or exceeds a communication characteristic threshold value. Additionally, the methods and apparatus comprise adjusting a retransmission request transmission rate when the communication characteristic value meets or exceeds the communication characteristic threshold value. Moreover, the methods and apparatus comprise sending a retransmission request to a network entity based on the adjusted retransmission request transmission rate.

Methods and apparatus for dynamic transmission of retransmission requests

Apparatus and methods include receiving one or more first signals at a user equipment (UE) during a first portion of a transmission time interval (TTI), wherein the one or more first signals are transmitted by a network to the UE using a transport format; determining the transport format upon receiving the one or more first signals and prior to a second portion of the TTI subsequent to the first portion of the TTI; and receiving one or more second signals at the UE during a second portion of the TTI.

Apparatus and methods for early transport format determination

Methods and apparatus for avoiding power scaling and controlling transmit power in uplink data transmission are provided. If a user equipment (UE) would be transmit-power limited when transmitting data concurrently on an uplink high speed dedicated physical control channel (HS-DPCCH) and an uplink data channel, the UE may forgo building data for transmission on the uplink data channel to avoid power scaling. If the UE would be transmit-power limited when transmitting data concurrently on an HS-DPCCH and a dedicated physical control channel (DPCCH), the UE may reduce the transmission power of a portion of the data transmitted on the DPCCH to avoid power scaling. The UE may also boost transmission power of a negative acknowledge transmission above network-specified power level.

Method and apparatus for avoiding power scaling in uplink data transmission

Methods and apparatus are described for performing cell selection for reducing an initial acquisition time between a user equipment (UE) and a network entity, comprising measuring a signal from a cell, the signal including at least one system information block (SIB), wherein the at least one SIB includes a plurality of cell selection threshold values; attempting to decode the at least one SIB; determining, in response to successfully decoding the at least one SIB, whether one or more measurements of the signal pass or fail a cell selection criteria check that includes the plurality of cell selection threshold values; determining, in response to the cell selection criteria check failing, whether the plurality of cell selection threshold values are within range of a plurality of corresponding minimum network threshold values; and performing a cell selection procedure on the cell in response to determining that the plurality of cell selection threshold values are within range of the plurality of corresponding minimum network threshold values.

Faster cell selection

Apparatus and methods of receive diversity (RxD) full cell search by a user equipment (UE) in a wireless communication system are described. In an aspect, a first set of received energies of a first signal received at a first antenna and a second set of received energies of a second signal received at a second antenna may be separately determined. Based thereon, a set of peak energies and corresponding antenna indices, along with a slot timing of at least one cell corresponding to the set of peak energies and corresponding antenna indices, may be determined. A frame timing and a scrambling code for the at least one cell then may be determined using a respective one of the first antenna and the second antenna corresponding to each of the set of peak energies and the corresponding antenna indices, along with the respective slot timing of the at least one cell.

Apparatus and methods of receive diversity (RXD) full cell search

Methods and apparatus for wireless communication for improving the call performance and power consumption during the connection state of a user equipment (UE). Aspects of the methods and apparatus relate to receiving a transmit power control (TPC) command from a network entity and decoding every TPC slot of the TPC command. Aspects of the methods and apparatus include ceasing the decoding of a TPC slot set when the current decoded symbol of the TPC slot is in disagreement with the previous decoded symbol of the TPC slot. The receiver of the UE is then deactivated until the end of the TPC slot set.

Method and apparatus for early termination of an RX chain

Certain aspects of the present disclosure relate to apparatuses and methods of managing signaling radio bearer (SRB) transmissions. In one aspect, the apparatuses and methods are configured to generate a SRB packet comprising signaling information, wherein the SRB packet is configured to be transmitted on a channel according to a scheduling serving grant, determine whether the SRB packet is unable to be transmitted based on resources allocated by the received scheduling serving grant, override the received scheduling serving grant in response to determining that the SRB packet is unable to be transmitted, and transmit at least a part of the SRB packet on the channel. In another aspect, a scheduling information message to indicate whether an additional scheduling severing grant is needed is transmitted on the channel along with at least the part of the SRB packet.

Apparatus and methods of managing signaling radio bearer transmissions at a user equipment

Disclosed are systems and methods for controlling by the User Equipment (UE) downlink power in early decode termination mode. In one aspect, the UE may be configured to perform early decoding of a downlink (DL) transmission from a base station. The UE further configured to estimate a signal-to-interference ratio (SIRE) of the DL transmission. Based on the SIRE, the UE is configured to select a Transmission Power Control (TPC) command sequence for a low power mode of operation of the UE in which a receiver is powered down. The UE is further configured to activate the low power mode and transmit the selected TPC command sequence to the base station to adjust a DL transmission power during the low power mode.

Apparatus and method for controlling downlink power in early decode termination mode

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San Diego, CA, United States of America

Sharif Ahsanul Matin