Abstract: Proximity sensors are used in many user devices to detect a user's proximity to it. The proximity detection may be used to control the transmit power of a wireless device to ensure that the transmit power is in the allowed power range as per various regulatory agencies. A method and apparatus are disclosed that enable adaptive Specific Absorption Rate control according to the combination RF transmit power of the multiple modems.

Abstract: Many new applications in a wireless client terminal rely on having internet connection available continuously to check the status and to do required download or upload of user data. The continuous internet connection increases power consumption of a client terminal and may also incurs additional costs due to internet usage fees. The power consumption, quality of service and cost of service from different networks such a Wireless Wide Area Networks (WWAN) and Wireless Local Area Network (WLAN) may be different. The coverage area of accessible WLANs may be quite limited compared to WWANs. A method and apparatus are disclosed that automatically enable and disable the WLAN access in a client terminal based on prevailing scenario and WLAN availability.

Abstract: Internet, voice calls, and messaging services have become ubiquitous and the means by which the services are accessed varies widely. The number and types of devices that may use these services have also proliferated. To serve a number and variety of client devices, a Service Distribution Device (SDD) may be used, which is a device that includes a modem for mobile broadband access and a short range wireless link to distribute the services to local devices which may have such connectivity. Power consumption of an SDD which may continuously broadcast signals is an important consideration. A method and apparatus are disclosed that enable adaptive and seamless selection of the best mode of operation for the SDD such that the power consumption may be reduced while providing uninterrupted service to the client devices.

Abstract: The 3GPP LTE wireless communication system employs dynamic scheduling and assignment of resources using the Physical Downlink Control Channel (PDCCH) to support low latency requirements for many applications. To keep the payload overhead low on the control messages, the dynamic scheduling and assignment messages over the PDCCH need to be decoded by the User Equipment (UE) by searching a number of possible PDCCH candidates in a given control region of the 3GPP LTE wireless communication system. This is often referred to as blind decoding of PDCCH. The high number of blind decoding attempts may lead to increased power consumption in a UE. A method and apparatus are disclosed that enable a UE to reduce the total number of decoding attempts without missing any PDCCH candidates that may be addressed to the UE which in turn may reduce the power consumption and may reduce the probability of false DCI detection.

Abstract: Modern mobile communication devices have a number of features that enable the users to stay connected with people, stay informed about various local and global events. While these features are useful, they can be intrusive or may cause distraction under some conditions. To reduce the disturbance and intrusion, the various notifications that inform the user about the new events on the mobile device may be temporarily disabled. However, the event notifications must be explicitly re-enabled by the user when it is acceptable to receive the notifications. The user may forget to re-enable the event notification which may lead to missed calls, missed event notifications, etc. A method and apparatus are disclosed that disable and enable the event notifications on the mobile device adaptively depending on the user's location and time to reduce the intrusiveness of the mobile device notification when not required while reducing any missed event notifications.

Abstract: In order to support low latency and bursty internet data traffic, the 3GPP LTE wireless communication system uses dynamic allocation. To keep the allocation overhead lower, the system is designed such that the client terminal must perform a number of decoding attempts to detect resource allocations. During course of the decoding attempts a false resource allocation may be decoded by the client terminal. The false detection may lead to multiple issues for the performance efficiency of the client terminal and the overall communication system. A method and apparatus are disclosed than enable the detection of false resource allocation. This in turn improves the performance and efficiency of the client terminal and the wireless communication system.

Abstract: In some applications, such as randomization and cryptography, remainder computation for a number is required. The remainder computation is also used in modulo arithmetic. The remainder computation can be simplified when the divisor belongs to a certain class of numbers. A method and apparatus are disclosed that enable low complexity implementation of remainder computation of any number when the divisor belongs to a type of numbers that can be represented as 2k+1.

Abstract: Modern mobile communication devices have a number of features that enable the users to stay connected with people in their contacts list. These mobile devices also keep the users informed about various events such as calls, text messages, emails, social media postings, etc. by providing various forms of notifications. The notifications may or may not be discreet. While the notifications of various events are useful, they may cause breach of privacy, may cause uncomfortable social situations, or may cause unsafe distraction under some conditions. These undesirable notifications in some scenarios may be controlled based on the awareness of the specific scenario in which the device user may be. A method and apparatus are disclosed that enable a user to control the notifications from a mobile communication device when used inside an automobile.

Abstract: Modern mobile communication devices have a number of features that enable the users to stay connected with people in their contacts list. These mobile devices also keep the users informed about various events such as calls, text messages, emails, social media postings, etc. by providing various forms of notifications. The notifications may or may not be discreet. While the notifications of various events are useful, they may cause breach of privacy, may cause uncomfortable social situations, or may cause unsafe distraction under some conditions. These undesirable notifications in some scenarios may be controlled based on the awareness of the specific scenario in which the device user may be. A method and apparatus are disclosed that enable a user to control the notifications from a mobile communication device when used inside an automobile.

Abstract: In a wireless communication system, a client terminal may be required to periodically receive the broadcast and multicast system information of the serving and neighbor base stations. In most scenarios the broadcast and multicast system information of base stations may not change frequently. A method and apparatus are disclosed to store, manage and use the broadcast and multicast system information of a set of latest serving and neighbor base stations. This may enable a client terminal to avoid receiving and processing all or most of the base station system information messages. This may significantly reduce the active states of a client terminal and may lead to significant reduction in power consumption, which may be a critical advantage for battery operated client terminals. The present invention may also reduce the time taken by a client terminal to get connected or reconnected to a base station, which may improve the user experience.

Abstract: In some applications, such as randomization and cryptography, remainder computation for a number is required. The remainder computation is also used in modulo arithmetic. The remainder computation can be simplified when the divisor belongs to a certain class of numbers. A method and apparatus are disclosed that enable low complexity implementation of remainder computation of any number when the divisor belongs to a type of numbers that can be represented as 2k+1.

Abstract: Spatial Multiplexing (SM) with Multiple Input Multiple Output (MIMO) is used in many wireless communication systems for providing high data rate in a given channel bandwidth. When SM-MIMO is used for sharing the same resources for multiple users (MU-SM), the control information describing the parameters of MU-SM need to be sent separately to all the users that may be sharing the same resources. The base station in a wireless communication system may only provide the parameters required by each specific client terminal for decoding the data addressed to it. A method and apparatus are disclosed that enable improved decoding of MU-SM signals in scenarios where information about the parameters of other transmissions on the same resources or absence of any transmission other than the one intended for the subject client terminal is not available.

Abstract: In many wireless communication systems, there is a major problem with the coverage in indoor environments because of signal loss during signal penetration through walls and other structures. Femto cells or repeaters may be used to address the signal coverage issue for indoor environments. The cost of femto cells or repeaters may be high depending on its capabilities. Method and apparatus are disclosed for a Signal Enhancer with reduced complexity to enhance the signal for an OFDM based TDD wireless communication system. This may result in a lower cost solution for improving the coverage and the overall communication system performance.

Abstract: In order to support low latency and bursty internet data traffic, the 3GPP LTE wireless communication system uses dynamic allocation. To keep the allocation overhead lower, the system is designed such that the client terminal must perform a number of decoding attempts to detect resource allocations. During course of the decoding attempts a false resource allocation may be decoded by the client terminal. The false detection may lead to multiple issues for the performance efficiency of the client terminal and the overall communication system. A method and apparatus are disclosed than enable the detection of false resource allocation. This in turn improves the performance and efficiency of the client terminal and the wireless communication system.

Abstract: Low latency wireless communication applications require highly dynamic allocation of resources. Providing allocation information on a highly dynamic basis increases the overhead of control signaling for allocation. A technique known as blind PDCCH decoding is used to reduce the control signaling overhead for allocation information. However, blind decoding occasionally may lead to invalid detection of allocation messages which in turn may lead to a number of problems such as wasted bandwidth, more power consumption, reduced throughput, etc. A method and apparatus are disclosed that may detect the invalid allocation messages and discard them which in turn may lead to detection of valid allocation messages for increased data throughput and reduced power consumption and improve the overall performance.

Abstract: The power consumption in a client terminal is one of the important aspects of wireless communication systems. The power consumed when a client terminal is in standby mode when it is periodically monitoring the paging messages has a significant impact of the battery life. A method and apparatus are disclosed that enable reduction of the power consumption in standby mode and extend battery life of a client terminal.

Abstract: Modern mobile communication devices have a number of features that enable the users to stay connected with people in their contacts list. These mobile devices also keep users informed about various events such as email, text messages, etc. While these features are useful they can be intrusive or distracting under some conditions. To reduce disturbances and intrusions, various notifications that inform the user about the new events on the mobile device may be temporarily disabled. However, event notifications must be explicitly re-enabled by the user when it is free to receive the notifications. The user may forget to re-enable the event notification which may lead to missed calls, event notifications, etc. A method and apparatus are provided that disable and enable event notifications on mobile devices adaptively to allow the users to reduce the intrusiveness of the mobile device notification when not required while minimizing any missed event notifications.

Abstract: Uplink power control is an essential part of wireless communication systems. The transmit power control operation in the uplink of a wireless communication system is a combination of the algorithms used at the base station and the reception and processing of the power control commands at the client terminal. An important aspect for the effectiveness of transmit power control is the timeliness of the changes made to the uplink transmit power at the client terminal. Sometimes the transmit power control loop may take longer time to respond to real time dynamics and may lead to inferior performance. A method and apparatus are disclosed that enable the power control adjustments at the client terminal such that the uplink transmit power is within the specified limits of the wireless communication network and yet enhance the performance of the client terminal and the wireless communications network.

Abstract: Wireless communication systems employ Multiple Input Multiple Output (MIMO) transmission and reception schemes to increase performance and the data rate of the system. A new approach for an SM-MIMO decoder that operates on the received symbols in parallel is presented. The new approach performs two different QR decompositions of the estimated channel matrix and produces two triangular matrices; one is right triangular and the other is left triangular. The modified systems of equations are processed in parallel. After each M-algorithm process has processed half of the total number of stages, total search space for the globally optimal transmitted symbol vector is reduced significantly. Finally, cumulative distance metrics are computed for the symbol sequences in the reduced search space and a global minimum is determined for the estimated transmitted symbol vector. This approach offers faster processing of the SM-MIMO signals and reduced distance metric computations and search operations.

Abstract: Estimating and compensating the frequency offset between a transmitter and a receiver is essential for reliable communication in wireless communication systems. Before a client terminal synchronizes with a base station, the initial frequency offset may be high. The frequency offset estimation may need to be performed even without having time synchronization with a base station. In case of cellular systems multiple base stations may be using the same RF channel to transmit their signals. The signals from different base stations may be superimposed at the receiver of the client terminal. A method and apparatus are disclosed for frequency offset estimation in presence of the signals from multiple base stations and with unknown timing of the base station.