Apple Inc.

Umesh K Shukla

Sachin J Sane

Madhusudan Chaudhary

Longda Xing

Zhiwei Wang

Arvind Swaminathan

Qiang Miao

Yaoqi Yan

Srinivas Pasupuleti

Qin Zhang

Aravind Radhakrishnan

Bo Wang

Thanigaivelu Elangovan

Viswanath Nagarajan

Venkatasubramanian Ramasamy

Sunny Arora

Harsha Shirahatti

Mohan Rao Thota

Generating and using a device-type specific preferred public land mobile network (PLMN) list for roaming PLMN selection. Wireless devices sharing one or more common characteristics may be tasked with collecting roaming PLMN selection data. That data may be collected and used to generate a preferred PLMN list specific to wireless devices sharing those common characteristics. The preferred PLMN list may be distributed to wireless devices sharing those common characteristics, which may then use it in conjunction with roaming PLMN selection.

Device-type specific preferred PLMN list

Described herein are apparatus, systems and methods for opportunistic system selection and reselection to avoid jammer desense intermodulation distortion. A method may comprise, at a user equipment ('UE'), identifying a list of frequencies and bands available to a cellular modem of the UE for one of system selection and system reselection, identifying a subset of the list of frequencies and bands based on an operation of a non-cellular wireless communication component of the UE, storing the subset of the list of frequencies and bands in a graylist, and performing, by the cellular modem, a search for one of the system selection and the system reselection based on the graylist.

Apparatus, systems and methods for system selection and reselection

Methods and apparatus for reducing voice call drop rate are disclosed. Existing devices do not account for the added burden of background services on voice calls. Specifically, multi-RAB scenarios (e.g., a voice call and background services) can experience significant reduction in call quality. Accordingly, in one exemplary embodiment, background services that are not time-critical and/or application-critical can be suspended while a voice call is in progress. By suspending background traffic during a call, the device can avoid unnecessary multi-RAB voice call operation, which significantly improves overall network operation and user experience.

Methods and apparatus for reducing call drop rate

Apparatuses, systems, and methods for user equipment (UE) devices to more efficiently scan frequency bands for potential base stations may include a UE configured to store information regarding results of prior cellular scan operations for a cell and to perform a new cellular scan operation while camped in the first cell. The new cellular scan operation may be partially based on the stored information. The prior cellular scan operations may have been performed to identify frequencies of available cellular base stations. The UE may update the information regarding results of prior cellular scan operations with information regarding success or failure of the new cellular scan operation. The UE may maintain lists of cells for which a cellular scan has been successful or unsuccessful and adjust the new cellular scan operation based at least partially on contents of at least one of these lists.

Mobile device with improved network scanning

A system, station and corresponding methods for providing warning notifications. In one exemplary method, it is determined whether any of a plurality of stations to which a Warning Notification is to transmitted is in a connected state. When it is determined that a first one of the stations is in a connected state, generating, by a broadcaster, a secondary Warning Notification formatted for transmission over a dedicated control channel (DCCH) and transmitting, by the broadcaster, the secondary Warning Notification to the first station over the DCCH. In another exemplary embodiment, a station for receiving emergency notifications is described. The station includes a receiver configured to receive a primary Warning Notification; and a processor which, upon receiving the emergency alert configuration in a format of one of a Paging Type 2 message and an SICI message, despreads a plurality of fingers.

System and method for reception of cell broadcast messages

Apparatuses, systems, and methods for user equipment (UE) devices to more efficiently scan frequency bands for potential base stations may include a UE configured maintain a first list of cells for which a cellular scan has been successful and a second list of cells for which a cellular scan has not been successful. The UE may be configured perform a first cellular while camped on a first cell at an expiration of a scan timer and, if the cellular scan is not successful, the increment a first failure count variable associated with the first cell and add the first cell to the second list if the first cell is not present on the first or second list. Additionally, if the first cellular scan is successful, the UE may be configured to add the first cell to the first list if the first cell is not present on the first list.

Varying HP-PLMN scan rate using scan history

In order to improve the management of the power consumption of electronic devices (such as cellular telephones), the operating mode of an interface circuit in an electronic device may be changed when certain commands are received. In particular, when one or more commands are received that disable data communication via the interface circuit and a cellular-telephone network and/or enable communication via another interface circuit in the electronic device and a wireless local area network (WLAN), the interface circuit may be transitioned to an operating mode in which data communication via the cellular-telephone network using a communication protocol that supports only data and no voice is disabled. For example, the communication protocol may include a Long Term Evolution (LTE)-compatible communication protocol.

Electronic device with reduced power consumption

Described herein are methods performed by user equipment ('UE') for carrier aggregation deployment and organization in unlicensed bands. The method includes initiating a cell selection process with a target cell, wherein the target cell sends a plurality of information blocks, receiving a first information block, prior to reading a second information block, determining whether the target cell is suitable for the UE to camp on based on the first information block, and terminating the cell selection process when the target cell is determined to be unsuitable for camping based on the first information block. The terminating may include comparing data from the first information block to data stored in a database. The method further includes determining whether the UE is in a stationary state or is in a state of motion, and using this information to improve cell selection delay on target cell.

Systems and methods for cell selection and reselection by improving system information reading procedure

Methods and apparatus for reducing voice call drop rate. Existing devices do not account for the added burden of background services on voice calls. Specifically, multi-RAB scenarios (e.g., a voice call and background services) can experience significant reduction in call quality. Accordingly, in one exemplary embodiment, background services that are not time-critical and/or application-critical can be suspended while a voice call is in progress. By suspending background traffic during a call, the device can avoid unnecessary multi-RAB voice call operation, which significantly improves overall network operation and user experience.

Method, apparatus and computer program product to adapt the timing for releasing connections between a mobile wireless device and a wireless network is described. The mobile wireless device monitors data activity, and the value of a fast dormancy timer increases when data activity increases and decreases when data activity decreases. The mobile wireless device counts successive time intervals that include data activity and changes the value of the fast dormancy timer based on a preferred fast dormancy timer value related to the successive time interval count.

Growing community of inventors

Sunnyvale, CA, United States of America

Umesh K Shukla