Qualcomm Incorporated

Muralidharan Murugan

Daniel Amerga

Kuo-Chun Lee

Nitin Pant

Pratik Kotkar

Raghu Narayan Challa

Sitaramanjaneyulu Kanamarlapudi

Shailesh Maheshwari

Sivaramakrishna Veerepalli

Ralph Akram Gholmieh

Thomas Klingenbrunn

Shyamal Ramachandran

Lorenzo Casaccia

Bhupesh Manoharlal Umatt

Srinivasan Rajagopalan

Jack Shauh

Vitaly Drapkin

Dinesh Dharmaraju

Pradeep Sagane Gowda

Swaminathan Sureshchandran

Sudhir S Halbhavi

Alexei Yurievitch Gorokhov

Jun Wang

Arvind Vardarajan Santhanam

Zhen Zhang

Muthukumaran Dhanapal

Yongle Wu

Subrato Kumar De

Jack Shyh-Hurng Shauh

Shivratna Giri Srinivasan

Vasanth Kumar Ramkumar

Gaurav Singh

Kiran Patil

Ketan N Patel

Salil Sawhney

Ankur Bhattacharjee

Ankur Verma

Mattias Kaulard Huber

Aritra Ukil

Amit Mandil

Krishna Ram Budhathoki

Rishika Tindola

Abhijeet Prasad

Sivasubramanian Ramalingam

Srivatsa Venkata Chivukula

Raghu Hanumantha Gowda

Utpal Barman

Raghu Movva

Vaibhav Singhal

Hashim Shaik

Santosh Kumar Rongala

Rahul Chandrashekar Sahukar

Sachin Saraswat

Syam Prasad Reddy Battula

Ning Yin

Sattwik Nandi

Harshpreet Singh

Kanagaraj Porur Damodaran

Sandeep Kumar Sunkesala

Gilbert Anpei Fu

Aparna S Ghorpade

Aparajith Chamarthi

Veerepalli Sivaramakrishna

Jack S Shauh

Certain aspects of the present disclosure relate to methods and apparatus for enhanced user equipment (UE) capability exchange for transitioning a connection from a first radio access technology system to a second radio access technology system. An exemplary method performed by a UE includes communicating with a first base station (BS) via a connection of a first radio access technology (RAT), determining, based on the first RAT, to omit a set of capabilities of the UE from capabilities information of the UE regarding a second RAT, transmitting the capabilities information of the UE regarding the second RAT to the first BS via the first RAT, communicating with a second BS via the second RAT according to the capabilities information, and sending an update of the capabilities information of the UE regarding the second RAT via the second RAT.

Enhanced capability exchange procedure for radio access technology change

A method of wireless communication by a user equipment (UE) capable of supporting multiple subscriptions, includes measuring, with a first of the multiple subscriptions, neighbor cells of at least one other subscription of multiple subscriptions. The method also includes storing measurement results from measuring the neighbor cells in a common measurement results database, while avoiding duplicates. The method further includes reporting, with a subscription for which a neighbor is configured by a network, the measurement results from the common measurement results database.

Neighbor measurement method for multiple subscriber identity module (SIM) user equipment (UE)

In various embodiments, a wireless device processor may determine a threat score for a first cell, determine whether the first cell threat score is below a first threat score threshold, update a good neighbor cell data structure using neighbor cell information from the first cell in response to determining that the first cell threat score is below the first threat score threshold, performing cell reselection to a second cell, determine whether the second cell transmits a system information block message indicating fake neighbor cell information, and increase a threat score for the second cell in response to determining that the second cell provides the SIB message indicating fake neighbor cell information and that a good neighbor cell data structure includes an indication of one or more good neighbor cells that are within the time threshold and the location threshold and doing countermeasures in a response to the determination.

Mitigating fake cell imprisonment

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus selects an LTE serving cell and a non-LTE serving cell. Measurement objects corresponding thereto are identified based on a review of broadcasted system information and historical information relating to prior serving cells. The apparatus identifies measurement objects from other radio access technologies (RATs) (WCDMA, CDMA, GSM). The remaining measurement objects may be identified based on measurement identifiers. The apparatus performs wireless measurements based on the selected serving cells and identified measurement objects. The resulting measurements are transmitted to the network for use in determining channel conditions.

Frequency pruning enhancement for wireless measurements

Techniques for optimized cell acquisition for long term evolution (LTE) time division duplex (TDD) systems or closed subscriber group (CSG)/evolved Multicast Broadcast Multimedia Service (eMBMS) capable user equipments (UEs) are disclosed. A UE obtains configuration information, CSG capability information, and/or eMBMS capability information for a cell. The UE also stores the obtained information for the cell in a cell information database. In some aspects, the UE may employ the CSG and/or eMBMS capability information to select a weaker cell, during initial frequency scan at power up of the UE, based on cell capability. Additionally or alternatively, the UE may employ the configuration information to determine an initial mutual information (Mi) hypothesis value for physical hybrid-automatic repeat request (HART) indicator channel (PHICH) group mapping of the cell. Additionally or alternative, radio link failures and/or out of synch events may be predicted and proactive responses employed based on previously obtained solutions.

Optimized cell acquisition for LTE TDD systems or CSG/eMBMS capable UEs

Certain aspects of the present disclosure propose techniques for independently signaling features supported by a user equipment (UE) in different duplexing modes. The UE may be capable of communicating in frequency division duplexing (FDD) and time division duplexing (TDD) modes. The UE may obtain a FDD-specific feature group indicators (FGIs) set and a TDD-specific FGIs set, and signal at least one of the FDD-specific FGIs set or TDD-specific FGIs set. In addition, the UE may take one or more actions to reduce the likelihood of transitioning to a mode of operation that is different from its current mode of operation.

Methods and apparatus for employing different capabilities for different duplexing modes

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives a request to receive a Multimedia Broadcast Multicast Service (MBMS) service associated with a service area identity (SAI) and a second frequency. The apparatus performs inter-frequency cell reselection from a first cell transmitting at a first frequency to a second cell transmitting at the second frequency, the second cell being an inter-frequency neighbor cell to the first cell. The apparatus receives system information from the second cell. The apparatus determines that the second cell transmitting at the second frequency is unassociated with the SAI based on the received system information. The apparatus blacklists the SAI on the second frequency in a blacklist for at least a period of time upon determining that the second cell is unassociated with the SAI.

Method of enhancing user experience by using system information in LTE EMBMS

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus performs a handover from a source cell to a target cell. The apparatus determines a decoding timer value based on network conditions. The apparatus attempts to decode a MIB or a SIB from the target cell within a time after the handover corresponding to the decoding timer value. The apparatus triggers a radio link failure (RLF) when the MIB or the SIB is not decoded within the time corresponding to the decoding timer value.

Optimized LTE MIB/SIB collection logic after LTE handover

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives a first MTCH. The apparatus stores MBMS control information for at least a second MTCH. The apparatus subsequently determines to receive the second MTCH. The apparatus then accesses the stored MBMS control information for the second MTCH upon determining to receive the second MTCH. The apparatus receives the second MTCH based on the accessed MBMS control information without acquiring the MBMS control information for the second MTCH after the determination to receive the second MTCH.

Achieving fast EMBMS channel switching and adding in LTE

Methods and apparatus for enhanced radio resource control (RRC) reestablishment in a communication system include addressing repeated radio link failures (RLFs). For example, the methods and apparatus include incrementing a counter value associated with a first cell based on a detection of a RLF by a user equipment (UE) in a RRC connected state with the first cell. The methods and apparatus further include determining that the counter value meets or exceeds a first barring threshold value within a cell barring evaluation time duration. Additionally, the methods and apparatus include prohibiting the UE from performing an RRC reestablishment procedure with the first cell for a first barring time duration.

Addressing radio link failures in wireless communication systems

Techniques for optimized HARQ recombining are provided. In one exemplary embodiment, a method for wireless communication comprises receiving a broadcast message to determine a timing of a transmission window, receiving at least one transmission within the transmission window, and determining whether the at least one transmission is successfully decoded. The method further comprises instructing a lower protocol layer to ignore remaining transmissions within the transmission window upon a determination that the at least one transmission is successfully decoded, wherein the remaining transmissions and the at least one transmission comprise duplicate copies of a message segment.

Optimized HARQ recombining within transmission window

A method, an apparatus, and a computer program product for wireless communication are provided for prioritizing the performance of measurements during measurement gaps and the reception of multicast/broadcast content. The apparatus receives a configuration from a serving cell to perform a measurement during a measurement gap of a unicast service while in a connected mode. In addition, the apparatus determines whether to refrain from leaving the serving cell on a first frequency and performing the measurement on a second frequency of a neighboring cell in order to receive multicast/broadcast content associated with a multicast/broadcast service during the measurement gap.

Prioritizing inter-frequency/inter-RAT measurements and eMBMS in LTE

Growing community of inventors

San Diego, CA, United States of America

Muralidharan Murugan