Abstract:
A non-real time messaging system (200) for targeting messages to a subscriber unit (222) comprises a synchronized profile of where a subscriber unit should be located (a predetermined base transmission area for transmission of messages to the subscriber unit) maintained between a controller (212) and the subscriber unit. The subscriber unit detects when the subscriber unit is not within the receiving range of a predetermined base transmission area, informs the controller and the controller directs subsequent transmissions to an area identified by the subscriber unit and otherwise transmits subsequent messages to the predetermined base transmission area. The system further includes a plurality of base receivers (217) coupled to the controller for receiving transmissions from the subscriber units and allowing the controller to detect when the subscriber unit is not within the receiving range of a predetermined base transmission area.
Abstract:
A selective call receiving device (10) such as a pager is controlled to dynamically change a base frame assigned to the device and subsequent control frames derived therefrom. The time that the device is operative to look for its address in a received signal can thus be dynamically changed to improve the efficiencies of a mixed systems environment without substantially reducing the battery life of the selective call receiving device (10). In two embodiments of the invention a new base frame for the device is derived from an originally assigned base frame that is stored in the selective call receiving device. In another embodiment, a new base frame for the device is derived from the device's address along with frame management information that is received by the selective call receiving device.
Abstract:
A battery saving interval utilized for communicating with a portable subscriber unit (122) in a radio communication system is dynamically adjusted. An occurrence of a predetermined triggering event associated with the portable subscriber unit is observed (504), and the battery saving interval utilized for communicating with the portable subscriber unit is adjusted (506) in response to the predetermined triggering event, while battery saving intervals of other portable subscriber units in the system are left unchanged.
Abstract:
A method and apparatus allocates a first predetermined plurality of frame time slots (102) to a first protocol, and allocates a second predetermined plurality of frame time slots (102) to a second protocol having a base frame management capability. The base frame management capability is applied such that portable selective call receiving devices (10) utilizing the second protocol normally perform battery saving throughout the first predetermined plurality of frame time slots (102).
Abstract:
A communication system is used for transmitting error-tolerant messages to a selective call receiver (122). The communication system includes a transmitter circuit and a controller (112). The controller (112) applies an error-correction algorithm to an original message and repeats the application step to the by-product therefrom until a message has been generated that is sufficiently error-tolerant (506, 508). The error-tolerant message is transmitted to the selective call receiver (122), which receives the error-tolerant message using a receiver circuit. A processor (310) of the selective call receiver (122) applies an inverse error-correction algorithm to the error-tolerant message, and repeats the application step to the by-product therefrom until the original message has been reconstructed (604, 606).
Abstract:
A method and apparatus prioritize communications in a two-way communication system (102, 104) serving portable subscriber units (122) in a coverage area (500). A fixed portion (102) of the two-way communication system (102, 104) requests (904) location information (824, 224, 826) from a subset of the portable subscriber units (122) in response to having a need to communicate therewith, and then receives (906) the location information (824, 224, 826) from the subset of the portable subscriber units (122). The location information (824, 224, 826) includes mobility index values (826) determined by the subset of the portable subscriber units (122) for indicating mobility of each portable subscriber unit (122). The fixed portion (102) then prioritizes (908) the communications based upon the mobility index values (826).
Abstract:
Dynamically evaluating candidate connections as alternatives to an active connection between a first computing device and a second computing device. The first computing device transitions to one of the candidate connections to replace the active connection based on the evaluation. The evaluation and transition occurs based on time intervals, events, or conditions. Maintaining the candidate connections enables mobile devices, for example, to be resilient to and tolerant of topology changes affecting the active connection.
Abstract:
Embodiments enhance the functionality of a vehicle, a user device, or both by the selection and sharing of data. Upon detection of each other, the vehicle device and the user device obtain and share data. The data may be associated with the user, the user computing device, and/or the vehicle and may be stored in cloud-based services. Functionality of the vehicle and/or user device is customized to the user based on the shared data. For example, the user device may provide assisted global positioning system (GPS) data to the vehicle to reduce a time-to-fix (TTF) when determining a location of the vehicle. In other examples, settings of the vehicle are personalized to the user, and location-relevant content is downloaded to the user device.
Abstract:
Embodiments order observed beacons based on relative signal strength to create a correspondence between beacon sets and positions. A computing device such as a mobile device provides a positioned observation including a plurality of observed beacons and a position of the mobile device during observation. The observed beacons are ordered based on quality indicators such as signal strength relative to each other. A set of the beacons are selected based on the ordering (e.g., the beacons with the strongest signal strength are selected in order). The position of the observing mobile device is associated with the beacon set to enable location inference for other devices providing observations including the same beacon set.
Abstract:
Location inference using selected beacons. Data is received representing a set of beacons observed by a computing device. The beacons are located within a first geographic area. A subset (e.g., a clique) of the beacons is selected based on a coverage area of each of the beacons, where each of the beacons in the selected subset has a coverage area that overlaps with the coverage area of each of the other beacons in the selected subset. Using known or estimated positions of the beacons, a second geographic area is defined based on the selected subset of beacons and the beacon reference data and the coverage areas associated therewith. The second geographic area, smaller than the first geographic area, represents an approximate location of the computing device. In some embodiments, the computing device is calculated to be within the second geographic area with 95% probability.