Abstract:
Embodiments of a system and methods for distributed adaptive resource allocation to enhance cell edge throughput are generally described herein. Other embodiments may be described and claimed.
Abstract:
When retransmitting lost packets of data to multiple devices in a wireless network, the original sequence of packets containing all the lost packets may be encoded into a smaller number of packets for the retransmission. These encoded packets may be collectively addressed to all the intended receiving devices through broadcast or multicast addressing. These encoded packets may then be selectively decoded by the receiving devices, using the successfully received previous packets as part of the decoding process. Repetitive exclusive OR algorithms may be used for encoding and decoding.
Abstract:
Methods and systems suitable for negotiating air traffic trajectory modification requests received from multiple aircraft that each has trajectory parameters. The methods include transmitting from at least a first aircraft a first trajectory modification request to alter the altitude, speed and/or lateral route thereof. A first conflict assessment is then performed to determine if the first trajectory modification request poses a conflict with the altitudes, speeds and lateral routes of other aircraft. If a conflict is not identified, the first trajectory modification request is granted and the first aircraft is notified of the first trajectory modification request being granted. Alternatively, if a conflict is identified, the first trajectory modification request is not granted and the first aircraft is notified thereof. If the first trajectory modification request was not granted, the first trajectory modification request is placed in a queue, which is periodically processed to perform subsequent conflict assessments.
Abstract:
Embodiments may comprise logic such as hardware and/or code to enable coexistence of high-density and low-density transmissions with a modified CSMA protocol. Embodiments include a self-CTS (self clear to send) packet transmission prior to transmission of a ready to send (RTS) signal when initiating a high density transmission amidst legacy devices. In many embodiments, the self-CTS or the RTS includes a network allocation vector (NAV) having a value for the duration of the transmission. In some embodiments, the self-CTS may include a flag or bit to indicate the Shading Transmission Starts (STS).
Abstract:
Device, system, and method of resource allocation in a wireless network. Embodiments include optimal space-frequency architectures for very high peak rates in wireless systems. For example, an apparatus for wireless communication in a power-limited, very wideband system includes a wireless communication device having a media access controller (MAC) and a physical layer (PHY) that are adapted for a multiple-input-multiple-output (MIMO) orthogonal frequency-division multiple access (OFDMA) communication scheme; a plurality of antennas, operationally coupled to said device, to send and receive wireless communication signals according to the MIMO-OFDMA communication scheme; and a resource allocator, to allocate transmission resources of the device into desired MIMO channels optimized according to at least one of signal-to-noise ratio (SNR), bandwidth, number of users, and signal-to-noise-plus-interference ratio (SINR).
Abstract:
The present invention provides a breather that includes a waterproof air-permeable membrane and a mounting device, the mounting device having a rod with a hollow structure and a head at one side of the rod. The head includes a bottom wall which has a circular bore in communication with the hollow portion of the rod and around which sidewalls are formed, several through holes being formed in the sidewalls, a fastening cover cooperating with the head with a chamber formed therebetween, wherein the waterproof air-permeable membrane is mounted inside the rod, and wherein the through hoes, the chamber and the circular bore communicatively connect the inside and outside of the breather.
Abstract:
Methods, apparatuses and systems for communicating in a wireless network are disclosed. One embodiment includes a method for communication in a wireless network that comprises determining a signal-to-noise ratio (SNR) for channels between a base station, one or more relay stations, and a user and selecting a relay station based on the determined SNRs. Embodiments may also include determining a time sharing parameter and a total transmitting time, transmitting by the base station to the selected relay station for a first duration, and transmitting simultaneously by the base station and relay station using multi-access code for a second duration. The simultaneous transmission may be adapted to be decoded utilizing joint decoding with interference cancellation. Other embodiments are disclosed and claimed.
Abstract:
A method to predict equipment life is disclosed. The method includes making available a set of input parameters, and defining a model of a health of the equipment as a function of the set of input parameters. The method continues with receiving at least one signal representative of a respective one of an actual sensor output relating to an actual operation attribute margin of the equipment, predicting a remaining useful equipment life based upon a sequence of outputs of the model of the health of the equipment, and generating a signal corresponding to the remaining useful equipment life.
Abstract:
Embodiments allow a station to determine which of a plurality of spatial beams is best suited for communicating with user equipment (UE). Some embodiments overlay spatial multiplexing in a way that provides support for UE without changing existing signaling schemes. In these embodiments, different messages, each designed to provoke different behavior in the UE, are transmitted on different spatial beams. The station then observes the behavior to determine which beam is most suited for the UE. Other embodiments design new signaling schemes to effectively allow UE supporting the schemes to identify which beam is most suited for communication. A single reference signal is scrambled with one of a plurality of indexing sequences, and each is transmitted on a different spatial beam. The UE performs a channel quality estimate for each scrambled signal and determines the index best suited for communication. The index may then be transmitted to the station.
Abstract:
A nozzle assembly includes a support member, a first tube, a second tube, and a baffling member. The support member defines a receiving hole and an opening communicating with the receiving hole. The first tube extends through the opening and defines a first space communicating with the receiving hole. The second tube is retained within the receiving hole and defines a second space communicating with the receiving hole. The baffling member is securely connected to an end of the second tube that is retained within the receiving hole. The baffling member forms a plurality of gaps for directing the airflow from the first space.