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:
Error detection and correction techniques are employed in many digital communication systems. There may be multiple error detection and correction stages in a single communication system to provide a good balance of latency and retransmissions for reliable communication. Despite multiple levels of error detection and correction, there may be some residual errors. Many applications may require completely error free communication. A method and apparatus are disclosed for a receiver that may use the already received erroneous versions of transmitted and retransmitted packet or file to perform error correction without requesting additional retransmissions.
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:
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:
In a wireless communication system, a client terminal may first establish time and frequency synchronization with the network. While establishing the time and frequency synchronization, a client terminal may need to detect additional parameters about the network, such as physical cell identity, before it can initiate communication with the wireless communication system. Detecting the network parameters in presence of time and frequency offsets increases the complexity of the initial cell search procedure that includes time and frequency synchronization as well as detection of network parameters. A method and apparatus are disclosed that achieve frequency synchronization using frequency domain cross-correlation earlier in the cell search procedure, which in turn reduces the complexity and improves the performance of the latter stages of cell search procedure and the overall performance of the client terminal.
Abstract:
The client terminals in a mobile wireless communication system typically continually search and keep track of the neighbor cells surrounding the cell from which it may be receiving service. Keeping track of neighbor cells by the client terminal may require periodic measurements on the neighbor cells and these measurements contribute to power consumption in the client terminal. The power consumption for neighbor cell measurements is an important factor when the client terminal either actively receiving service from the network or in standby mode when the client terminal is not actively receiving service from the network. A method and apparatus are presented that enable the client terminal to keep track of the neighbor cells with reduced measurements and thereby with reduced power consumption.
Abstract:
In any cellular communication the network transmits broadcast information with some periodicity which is defined by the network parameters. The client terminal must acquire this system information in order to access the services from the network. The time required by the client terminal to acquire all the necessary system information to initiate network access may depend on the scheduling of the system information broadcast by the network. In some cases the scheduling information about the system information may be described in another system information message whose schedule may be fixed or known a priori. Conventional method of decoding the complete system information may involve decoding attempt for all the possible instances of transmission of the system information. A method and apparatus are disclosed that enables acquisition of the system information based on stored known instances of system information transmission. This results in reduced power consumption at the client terminal.
Abstract:
In the 3GPP Long Term Evolution wireless communication system, when performing handovers, the client terminal is not required to know the Radio Frame Number of the target cell. While basic functionality of the LTE wireless communication system air interface can be maintained in the new serving cell after handover completion without knowing the Radio Frame Number of the new serving cell, it is not possible to immediately resume many other important functions of LTE wireless communication system air interface, such as CSI measurements and reporting, SRS transmission, and SPS. Such functions can only be resumed after the Radio Frame Number becomes known. Conventional methods acquire the Radio Frame Number after completion of the handover. This may delay the resumption of the CSI, SRS, and SPS functions. A method and apparatus are disclosed that enable the client terminal to resume the CSI, SRS, and SPS functions immediately after handover completion.
Abstract:
A cover for a portable consumer electronic device is provided with an integrated mobile communication device. The integrated mobile communication device enables decoupling of the consumer electronics device from the modem used for wireless communication. This enables the certification and approval of the end consumer electronic device and the mobile wireless communication modem device to be done separately, and also enables the replacement of the mobile wireless communication modem device in an easier and less expensive manner. The user can choose among different wireless communication technologies such as 2G/3G/4G, as well as service from different network operators, without tying up the consumer electronic device with any particular mobile wireless communication modem technology or network operator. The cover includes a connector for connection between the integrated mobile communication device and the batter of the consumer electronic device. The cover may also include a backup battery for use by the consumer device.