Empire Technology Development LLC

Qualcomm Incorporated

Scintera Networks, Inc.

Other

Empire Technology Department LLC

Arvind Vijay Keerthi

Alexei Yurievitch Gorokhov

Avneesh Agrawal

Abhijit G Shanbhag

Madabusi Govindarajan

John Choma

P Vijay Kumar

Dhananjay Ashok Gore

Prashant Choudhary

Technologies and implementations for determining the location of a device in an indoor environment are generally disclosed.

Determining the position of a mobile device in an indoor environment

Technologies are generally provided for single-slot bi-directional message exchange that allows two nodes to transmit in the same time-slot at the same frequency. The transmissions may be relayed to the destination node within the same time-slot. An interfering signal generated by each node may appear time-offset in the same time slot as it was transmitted, superimposed on the message signal from the other terminal. Roundtrip and cross-trip delay estimates and channel estimates may be determined at each node. Transmitted signals may be recovered at the destination nodes based on the roundtrip and cross-trip delay estimates and channel estimates.

Single slot bi-directional message exchange in relay networks

Technologies are generally described for discerning patterns in the 'goodness' or 'badness' of time-frequency slots to allow predictive allocation of spectral resources that may be appropriate for a wireless user. According to some examples, information on device location, time slots, sub-carrier(s) allotted for each time slot, and quality indicators may be received from mobile devices. The time slots may be grouped by location to form analysis intervals. A time-frequency vector may then be identified for each analysis interval and a unit of geographic grid. A &#x201c;goodness&#x201d; indicator may be computed for each time-frequency vector. Clusters of time-frequency vectors may be categorized for each analysis interval and associated unit of geographic grid such that mobile devices can be assigned &#x201c;good&#x201d; clusters through sub-carrier allocation.

Predictive spectral allocation in mobile networks

Technologies are generally described for providing a transition between predictive and mobile-assisted spectral allocation. In some examples, wireless devices may be enabled to determine adequacy of theft allocated spectral path to meet their communication needs by analyzing signal-to-noise ratios (SNRs) of their assigned sub-carriers. If a wireless device determines a current sub-carrier to be inadequate based on the analysis, it may send information associated with preferred sub-carriers to a base station. The base station may determine one or more nearby good clusters based on a comparison of a sequence of received preferred sub-carriers and the spectral paths represented by the nearby cluster centers, and select a re-allocated spectral path with shortest information distance to the sequence of preferred sub-carriers.

Smooth transition between predictive and mobile-assisted spectral allocation

Technologies are generally described for reducing spectral allocation conflicts in wireless networks. In some examples, two (or more) wireless devices with intersecting spectral allocation may be identified, followed by determination of one or more time-frequency vectors of the spectral allocation for one of the wireless devices that have a first overlap with one or more time-frequency vectors of the spectral allocation of the other wireless device. For each determined time-frequency vector, an alternate time-frequency vector may be determined such that a second overlap between the alternate time-frequency vector and the time-frequency vectors of the other wireless device is lower than the first overlap. The alternate time-frequency vector may be transmitted to the wireless device to enable that device shift its communication to the alternate time-frequency vector for enhanced communication performance.

Resolving spectral allocation conflicts in mobile networks

Techniques for determining the popularity of a business entity are provided. A communication is received at a computing system. The computing system searches the received communication for a business entity name. The computing system also searches the received communication for information related to an opinion about the business entity. Based on the information related to the opinion, the computing system determines a customer satisfaction rating of the business entity.

Analyzing communications to determine business entity popularity

Implementations and techniques for changing the orientation of a user of a mobile communication device based at least in part on transmit power are generally discussed. The change in orientation of the user may reduce radiation absorbed by the user.

Changing the orientation of a user based at least in part on transmit power

Technology is generally described for computing paths between geographical localities. In some examples, the technology can receive a request for a path between two or more geographical localities, and compute a path based at least on a popularity rating of intermediate geographical localities.

Computing paths between geographical localities

Technology is generally described for computing paths between geographical localities. The technology can receive a request for a path between two or more geographical localities, and compute a path based at least on a popularity rating of intermediate geographical localities.

Techniques for sending signaling information using hierarchical coding are described. With hierarchical coding, individual messages for users are encoded using multiple interconnected encoders such that (1) the message for each user is sent at a data rate suitable for that user and (2) a single multicast message is generated for the messages for all users. A base station determines data rates supported by the users and the code rates to achieve these data rates. Each data rate is determined by one or more code rates. Signaling information for the users is mapped to data blocks to be sent at different data rates. Each data block is then encoded in accordance with the code rate(s) associated with the data rate for that data block. A final coded block is generated for all users and transmitted. Each user performs the complementary decoding to recover the message sent to that user.

Hierarchical coding for multicast messages

Method and apparatus for communicating a radio signal between a first station and a second station, including estimating at least one characteristic of a radio channel from the first station including a first plurality of weightable transceiving elements, to the second station including a second plurality of weightable transceiving elements; calculating a receive weighting of at least one weightable transceiving element at the second station, responsive to the estimate; calculating a transmit weighting of at least one weightable transceiving element at the first station; and then communicating the radio signal by transmitting from the transmit-weighted transceiving elements at the first station, over the radio channel, to the receive-weighted transceiving elements at the second station, while reducing the response to unwanted interfering signals.

Growing community of inventors

Bengaluru, India

Arvind Vijay Keerthi