Broadcom Corporation

Agere Systems Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Rafael Carmon

Simon Issakov

Alon Shechter

Wael William Diab

Nicholas Ilyadis

Raymond Hayes

Eyal Yair

Tamir Scherzer

John S Walley

Murat Mese

Soumen Chakraborty

Shao-Cheng Wang

Sindhu Verma

Kamlesh Rath

Daniel Stopler

Pavan Nuggehalli

Ido Gazit

Eliahou Arviv

Vladimir Kopilevitch

Ilya Degtyar

Systems and methods for adaptive access and handover configuration based on historical data are provided. Access and handover decisions are optimized in a multiple radio access technology environment using historical data associated with network performance. Future needs for access and handovers are predicted using historical data associated with the user and historical data associated with network performance. Performance metrics are received periodically or continuously from nodes in one or more networks at a centralized controller. The centralized multi RAT controller correlates these performance metrics and determines predicted handovers for a user device. Preparations for the predicted handovers can then be made prior to the handover event.

Cross radio access technology access with handoff and interference management using communication performance data

Systems and methods for staged connectivity and sleep mode are provided. Embodiments of the present disclosure optimize power consumption for a user across user devices by creating an ad hoc co-located network of user devices and establishing a device in the co-located network to act as a master (hub) device. In an embodiment, the system includes multiple user wireless devices and a network controller. The network controller identifies a set of proximate wireless devices and the power capability for each wireless device in the set. The network controller then selects a wireless device in the set to act as the hub (master) wireless device based on factors such as the power capabilities of each wireless device. The network controller then instructs the other wireless devices in the set to power down and instructs the appropriate network providers to handover communications to the hub (master) device.

Systems and methods for sleep mode and staged connectivity in multi-RAT environments

A femtocell for conserving power, which includes a transmitter module configured to be inactive for periods of call inactivity and data inactivity within a corresponding femtocell geographic coverage area, and includes a monitoring device configured to monitor the femtocell geographic coverage area, and further includes a controller module configured to cause a call handover to the femtocell when a cellular handset device is functioning and is located within the femtocell geographic coverage area. The femtocell also being configured to communicate with one or more macrocell base stations, each having a corresponding macrocell, which are configured to facilitate communication between the cellular handset device and a wireless network.

Green femtocells and methods of implementing the same

Cellular processors are cascaded to provide different configurations, which result in higher-capacity base stations, increased numbers of simultaneous users over one frequency band, and/or aggregation of several carriers while still using only one radiofrequency (RF) chipset. The processors are aligned in both time and frequency, with each processor having a data port that allows data exchange with the other processors. The data alignment and exchange allow the processors, in the aggregate, to act as a single unit, resulting in a scalable architecture that can accommodate different system configurations.

Cascading radio frequency circuits

Embodiments of this disclosure include methods in which a core network controller determines which femtocell base station to handover a cellular device to. Methods include comparing a cell parameter difference provided by a base station with a cell parameter difference provided by the cellular device. The cell parameter difference provided by the base station is the cell parameter difference between the base station and each neighboring base station. The cell parameter difference provided by the cellular device is the cell parameter difference between the base station through which the cellular device is currently associated with to the core network and each neighboring base station. The core network controller compares the cell parameter difference provided by the cellular device with the cell parameter difference provided by the base station. The core network hands the cellular device to the base station when the cell parameter difference provided by each are substantially equivalent.

Method for determining a handover between a macrocell and a femtocell

Recent LTE communications schemes utilize such large amounts of data traffic, that there is little available bandwidth for performing sniffing of nearby base stations and/or cells, which is often integral in performing carious calibrations. Utilizing an LTE scheduler, small data traffic gaps can be detected in one or both of the receive chain and transmit chain. During these data traffic gaps, portions of sniffing data can be acquired and stored without significant interruption to the communication chains, where the overall process may be referred to as 'blinking.' Over time, these portions can be accumulated in memory until a sufficient. Over time, these portions can be accumulated in memory until a sufficient amount of sniffing data has been acquired. Once sufficient data has been acquired, sniffing analysis can be performed in the background on the combined data.

Device and method for performing opportunistic sniffing

Cascading baseband processors

Chip instrumentation determines, in-situ, an allowable increase over product specification in the operating frequency of at least one clock domain in an integrated circuit for a given set of environmental, power supply and/or functionality constraints. Information on the allowable increase in operating frequency for the at least one clock domain is provided to circuits and/or software to effect change in operating frequency.

Chip instrumentation for in-situ clock domain characterization

A system, method, and apparatus to facilitate the synchronization of oscillators between members of a Heterogeneous Network (HetNet) to form a self-synchronizing network (SSN). The network members are configured to broadcast information indicative of the reliability of their oscillator. Network members attempt to look for reliable sources such as those originating from a macrocell base station or GPS. If such a source is found, the member cell updates it clock accuracy confidence level number (CACL) to indicate this. Network members also share information regarding the frequency offsets between one another. Every cell member then applies a weighted average function to determine how to update its own oscillator and CACL value accordingly. Cell members can also update their functionality, such as RF power level, in response to varying degrees of CACL values. This operation results in a convergence of all cell members to the most accurate oscillator offset value.

Small cell network self-synchronization

Passive location determining of a 3G handset is provided. The method may include the following steps: sending a sequence of 3G 'Pings' directed at a specified handset over a 3G network; determining the specified handset user identifier and the sewing base station of the specified handset based on reoccurrences of user identifiers responsive of the ping requests, captured from the forward access channel (FACH) of each base station; decoding the FACH of the serving base station responsive to an additional ping, yielding parameters required for receiving uplink dedicated channel (UL DCH); estimating, in each location associated with a base station, a time difference between fastest possible and actual arrival of a signal over the UL DCH sent by the specified handset, wherein the estimating is synchronized to the serving base station; and calculating the location of the specified handset, based on the estimated time differences associated with the locations.

Passive locating of UMTS handsets

Cellular processors are cascaded to provide different configurations, which result in higher-capacity base stations, increased numbers of simultaneous users over one frequency band, and/or aggregation of several carriers while still using only one radio frequency (RF) chipset. The processors are aligned in both time and frequency, with each processor having a data port that allows data exchange with the other processors. The data alignment and exchange allow the processors, in the aggregate, to act as a single unit, resulting in a scalable architecture that can accommodate different system configurations.

In one embodiment, a method for processing a series of MAC-hs protocol data units (PDUs) in an HSDPA-compatible (high-speed downlink packet access) receiver in a 3G wireless communication network, the method including: (a) receiving a MAC-hs PDU having: (i) a queue identification (QID), (ii) a transmission sequence number (TSN), and (iii) one or more MAC-d PDUs, (b) then disassembling the MAC-hs PDU (c) then distributing the one or more MAC-d PDU to a reordering queue indicated by the QID, and (d) then performing reordering processing for the corresponding reordering queue based on the TSN. Steps (a) and (b) are performed in a physical layer of the receiver. Steps (c) and (d) are performed in a data-link layer of the receiver.

MAC-HS processing in an HSDPA-compatible receiver in a 3G wireless network

A method and apparatus is disclosed to restrict access services to a communication device. The services may be restricted based upon hardware characteristics, geographic characteristics, user specifications of the communication device and/or specified rules. The method and apparatus may restrict its service to only specific applications suitable for the environment and the time. Upon a request for a service that is now restricted, the method and apparatus may notify an end user that the service was requested. Further, the method and apparatus may notify an originator of the request that the service is not available and may ask for a short message to be delivered to the end user.

Femtocell base station for controlling communication according to specified criteria

Methods and apparatus are provided for blind transport format detection using Discontinuous Transmission (DTX) detection. According to one aspect of the invention, the transport format that was used to transmit information is determined by identifying a transition between a Discontinuous Transmission segment and a data segment included in the transmitted information; and determining the transport format based on a location of the transition of the Discontinuous Transmission segment. A cyclic redundancy check can optionally be performed for a plurality of possible transport formats, and then the step of identifying a transition can be limited to those transport formats having a valid cyclic redundancy check.

Method and apparatus for blind transport format detection using discontinuous transmission (DTX) detection

In one embodiment, a method for processing a transport block having a MAC-hs protocol data unit (PDU) and a corresponding checksum in an HSDPA-compatible (high-speed downlink packet access) receiver in a 3GPP wireless communication network, the method including: (a) recovering the transport block, (b) performing, substantially in parallel: (i) a cyclic redundancy check (CRC) on the transport block to determine whether the transport block passes or fails, and (ii) MAC (media access control) disassembly to generate a modified MAC-hs PDU, and (c) determining whether to perform reordering-queue distribution and reordering on the modified MAC-hs PDU based on whether the transport block passes or fails. By performing the CRC check and disassembly substantially in parallel, processing efficiencies may be gained.

Growing community of inventors

Rishon Lezion, Israel

Rafael Carmon