Abstract:
A mobile communications system including one or more mobile communications devices and a mobile communications network, the mobile communications network including a radio network part and a core network part and being configured to communicate data packets to and/or from mobile communications devices. Data packets can be communicated to or received from the mobile communications devices using either a broadband packet network or a dedicated messaging network. The dedicated messaging network is arranged to communicate short data grams more efficiently than larger data communications. Therefore by selecting either the dedicated messaging network or the broadband network as a function of content of the data packet a more efficient use of available communications resources and hardware resources is realized.
Abstract:
A method of delivering data to a wireless communication unit in a communication system that comprises a broadcast network and a unicast network comprises at a network element, encoding a data packet stream at a first rate for delivery over the broadcast network; encoding the same data packet stream at the first rate for delivery over the unicast network; and concurrently transmitting the encoded data packet stream over the unicast network and broadcasting the encoded data packet stream over the broadcast network.
Abstract:
A broadband omni-directional bicone antenna. The antenna can comprise conductive surfaces of conical voids provided within a solid dielectric structure. The outside surface of the solid structure can support a radio frequency (RF) lens geometry operable for beam forming. The beam forming can modify the elevation pattern of the electromagnetic radiation from the bicone antenna. The solid dielectric structure may be machined or molded from a single piece of material. The conical voids provided within the solid structure can be metallized to provide conductive bicone radiators. The outer surface beam shaping lenses can be zoned or continuous and can provide elevation patterns with increased gain, cosecant squared falloff, or various other patterns. The beam shaping lens may be formed from any low-loss dielectric. Alternatively, the lens may be formed from a less dense material such as dielectric foam that can support radial conductive beam forming vanes.
Abstract:
A coherent or a noncoherent transmission mode is automatically selected for a transmission on the basis of an estimated Doppler frequency shift due to a motion of a mobile terminal. A coherent mode is selected if a pilot signal overhead is not excessive to uniquely characterize a Doppler frequency shift, as at lower carrier frequency times relative velocity products. A noncoherent mode is selected if a pilot signal overhead would be excessive to uniquely characterize a Doppler frequency shift at higher carrier frequency times relative velocity products. Both the coherent and noncoherent modes have respective advantages for their respective carrier frequency time relative velocity regimes.
Abstract:
A composite part program generator includes a computer-aided design (CAD) system interface, a path generator, a course head manager, a post-processor and a machine simulator. The composite part program generator produces composite part programs for use on a multihead composite material application machine, such as a composite tape lamination machine or an automated fiber placement (AFP) machine, to manufacture a complex composite parts, including relatively flat, contoured, or generally cylindrical composite parts. This programming method can reduce the labor and time required to produce a composite part program for a multihead composite material application machine by an order of magnitude with respect to manual or existing automated programming methods.
Abstract:
Nonionic derivatized starch of varying degrees of substitution may be used as a fluid loss additive for well bore cementing operations. A well bore cementing composition may include a cement and a nonionic derivatized starch, the nonionic derivatized starch in a concentration in the cement to provide a fluid loss of less than 200 cc/30 min. A method for cementing subterranean zones penetrated by a well bore may include: providing a cement slurry including mix water, hydraulic cement and a nonionic derivatized starch as an additive for fluid loss control in well cementing applications; pumping the cement slurry into a well; and holding the cement slurry in place until it sets.
Abstract:
A cellular communication system comprises a first base station serving at least a first user equipment. The base station comprises functionality for transmitting a base station duplex capability message to user equipments using a transmission format which is common to a plurality of duplex modes. A first user equipment comprises a transceiver which receives the base station duplex capability message. A RACH characteristics processor determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller controls the transmission of an access message to the first base station in response to the at least one transmit characteristic.
Abstract:
A mobile radio network comprises a plurality of communication points, each of which are capable of communicating with any other communication point. Each communication point has a proximity sensor, a transmitter/receiver (14), which is able to send signals to and receive signals from the other communication points. Means for controlling the transmitter/receiver and means for storing data to identify the communication points is also described.
Abstract:
A tire rain protector made of a mushroom shaped polymer body having a reverse taper male thread formed thereon having a threadform with three varying geometric parameters. The thread thickness, thread height, and thread crest width all increase from the top of the tire rain protector body to the bottom of the body. These three features along with a thread that begins at the underside of the cap enable for a device that is easy to install and forms a secure tight seal on a tire. When installed, this dome-like device diverts rain from collecting into the concave liner (inner sidewalls) of a horizontally stacked tire.
Abstract:
Disclosed is a portable apparatus for batting practice which aids in the development and/or improvement of a batter's ability to strike a baseball/softball with a baseball/softball bat. The apparatus consists of ball-targets, affixed to a hub, that rotate about a horizontal axle. Suitably, the hub is defined by a strap and clamp assembly.The apparatus may be affixed to any vertical assembly, but will typically be affixed to a standard vertical assembly, commonly known as a batting tee. Once so affixed, the apparatus may be adjusted up or down along with the tee, to allow for batters of varying heights to use the apparatus. The batter strikes the target, with the selected implement, in this case a baseball/softball bat, causing the target to rotate around the horizontal axle, eventually returning a target once again to the upright and proper position, allowing for further training using said apparatus.