Broadcom Corporation

Yuan Liu

Abhishek Pandit

Stephen Richards

Yaxin Cao

Yongqian Wang

Sethuraman Gurumoorthy

Xiaoxin Qiu

Sridhar Prakasam

Zhijun Gong

Giridhar Pattaswamy

Navin K Karra

Sudip Alexei Gupta

Sultan Budhwani

Aniruddha Subhash Diwan

Soma Majumdar

Vikram Shantveer Mhetre

Dong Zheng

Jun Lin

Sandeep Sarthavalli Ramesh

Mojan Mohajer

Odile Rollinger

Sagar Nargundkar

Romain Marie Pierre Raymond Garcin

Navin Karra

User equipment (UE) includes an architecture for handling femtocell fingerprints, and searching for femtocells. The architecture may control the frequencies for which the femtocell search is performed in various manners. For example, the architecture may schedule a round-robin list of femtocell frequencies for measurement, and may reduce the search space according to the frequency bands actually in use in the region in which the UE is located, according to whether or not reselection timers are running for specific frequencies, or in other ways.

Cell selection techniques for femtocell measurements

User equipment (UE) includes an architecture for handling femtocell fingerprints. The architecture may, as examples, maintain the validity and reliability of fingerprints and coordinate enhancement to existing fingerprints. The architecture also supports fingerprint creation, updating, and deletion.

Femtocell fingerprinting

A multiple-subscriber identity module (multi-SIM) multi-standby communication device includes a single operating system (OS) and a single radio resource unit that is shared by multiple virtual modems (VMs) within a virtual modem framework (VMF). The OS maps VM tasks of the multiple VM to OS resource spaces according to corresponding VM IDs. which may be embedded in global variables utilized in the single OS to access OS resources. The single OS may run the mapped VM tasks utilizing OS resources in the OS resource spaces. The OS may run VM tasks utilizing OS resources in OS resource spaces identified by corresponding VM IDs.

Method and system for task mapping based on corresponding virtual modem identifiers in an operating system for virtual modems within a multi-SIM multi-standby communication device

An acknowledgement technique reduces packet-switched communication delays. The technique may be implemented in a mobile communication device with multiple SIMs. The technique facilitates enhanced communication capability for the mobile communication device. In one implementation, the technique helps reduce delays caused by switching between packet-switched and circuit-switched communications. Specifically, in one aspect, the technique reduces delays caused by exponential backoff that may occur during suspension of a packet-switched communication.

Communication protocol technique for improving data throughput

A communication device comprises a single radio resource unit that is shared by a plurality of virtual modems (VMs), each uniquely associated with a single one of a plurality of SIM cards. Traffic related to the SIM cards are concurrently handled utilizing corresponding VMs. Available radio resource in the single radio resource unit are shared by the VMs based on corresponding VM states, namely, an active state, an idle state and a suspended state. VMs in an idle state concurrently monitor paging events and concurrently perform idle mode procedures such as location updating. VMs not related to an intended traffic are suspended. A VM related to the intended traffic is transitioned from an idle state to an active state to enable the communication for the intended traffic. Once the communication is complete, the suspended VMs are resumed to continue idle mode activities.

Method and system for multi-standby operation for a multi-SIM multi-standby communication device

Systems and methods are presented to support operation of a multiple subscriber identity module (SIM) device. A first SIM may perform a data transfer or voice call. During the first SIM's data transfer or voice call, transition times are identified to transition communication resources to a second SIM for use in performing a registration update communication with a network controller that supports the second SIM. The registration update communication may include a periodic location update, a periodic routing update, or a periodic tracking update. The multiple SIM device may identify the transition time by obtaining periodic registration timing information from the network controller, configuring a periodic registration timer based on the periodic registration timing information, and setting the transition time as an expiration time of the periodic registration timer.

Periodic registration updates for multiple SIM user equipment

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Holmdel, NJ, United States of America

Yuan Liu