Patent classifications
H04L5/0071
LOW LATENCY ENHANCEMENTS TO CV2X AUTONOMOUS RESOURCE SELECTION AND RE-SELECTION PROCEDURE FOR VEHICLE-TO-VEHICLE COMMUNICATIONS
Low latency enhancements for communication systems, including autonomous driving and/or selection scenarios, are provided. A method for communication includes monitoring communication resources in a communication system, determining a set of candidate resources to use for subsequent transmission of information within a time window such that the time window is minimized based on a desired communication latency parameter that considers at least one or more of communication channel congestion and a priority of transmission, determining a set of lowest energy resources from the set of candidate resources, selecting a low energy resource from the set of lowest energy resources, and transmitting data on the selected low energy resource. Other aspects, embodiments, and features are also claimed and described.
Channel access method and apparatus for transmission of a signal in unlicensed spectrum
Embodiments of the present invention provides a method and an apparatus for channel access for the transmission of a signal. The method includes: counting down, by a first device, an initial value N of a random backoff counter within a contention window; sensing, by the first device, a channel status; determining, by the first device, whether or not to perform transmission of the signal within a periodic window based on the sensed channel status; transmitting, by the first device, the signal after sensing the channel to be idle. Therefore, the channel access method and apparatus adapt to the data and control traffic load in the channel using LBT with random back-off with a contention window of variable size.
Intelligent deployment cascade control device based on an FDD-OFDMA indoor small cell in multi-user and interference environments
The invention presents an intelligent deployment cascade control (IDCC) device for frequency division duplexing (FDD)-orthogonal frequency division multiplexing access (OFDMA) indoor small cell to enable easy installation, multi-user (MU)service reliability, optimum throughput, power saving, minimum interference and good cell coverage. The proposed IDCC device is designed with a cascade architecture, which mainly contains five units including a resource allocator, a minimum throughput/cell edge CQI converter, an adaptive neural fuzzy inference system (ANFIS) based initial transmit power setting controller (ITPSC) in the first cascade unit, an ANFIS based channel quality index (CQI) decision controller (CQIDC) in the second cascade unit and an ANFIS based self-optimization power controller (SOPC) in the third cascade unit. The SOPC consists of three parts, namely the transmit power adjustment estimator (TPAE), transmission power assignment and self-optimization power controller protection mechanism.
Method and apparatus for dynamic bandwidth provisioning in frequency division duplex systems
A method and apparatus are described that provides flexible spectrum usage by using a paired frequency division duplex (FDD) spectrum to enable dynamic access in television white space (TVWS), sub-leased spectrum or unlicensed spectrum, (e.g., industrial, scientific and medical (ISM) bands), in a femto cell environment or the like. Elastic FDD (E-FDD) enables femto cell operation in TVWS, sub-leased spectrum and/or unlicensed spectrum, either simultaneously with licensed spectrum or as an alternate channel to licensed spectrum. E-FDD enables dynamic asymmetric bandwidth allocation for uplink (UL) and downlink (DL) in FDD, and enables variable duplex spacing, (i.e., using FDD with minimum duplex spacing between DL and UL spectrum, or, using hybrid-FDD, (FDD in a time duplexed fashion), when a spectrum gap between the UL and DL spectrum is below a certain minimum threshold. Additionally, the signaling enhancements to implement E-FDD are also provided.
Methods for long term evolution (LTE) transmission bursts to improve spectral efficiency in unlicensed frequency channels and indoor scenarios
Modifications to frame/subframe structure are presented herein so that a wireless device can transmit its data within a fraction of a subframe. The device obtains data to be transmitted in an unlicensed spectrum and determines whether an entire subframe is required to completely communicate the data. If the data is small enough to not require the entire subframe, then the device generates a burst transmission to minimize the time period of the subframe used to communicate the data. The device transmits the burst transmission and a parameter indicating the duration of the burst transmission.
Small cell resource allocation
The disclosure provides a method and small cell for allocating a Resource Block (RB) to a transmission between the small cell and a User Equipment (UE) the method comprising generating a value using a quasi-random, low-discrepancy, number generator, associating the value with a RB and allocating the RB to a transmission between the small cell and the UE.
Apparatuses, computer readable medium, and method for multi-user request-to-send channel access in a wireless local-area network
Methods, apparatuses, and computer readable media for MU-RTS and CTS are disclosed. An apparatus of a high-efficiency wireless local-area network (HEW) master station is disclosed. The HEW master station including processing circuitry configured to generate a packet to indicate a multi-user request-to-send (MU-RTS) and to indicate channels on which one or more HEW stations are to transmit a clear-to-send (CTS). The HEW master station further including a transceiver configured to transmit the packet to the one or more HEW stations, and receive clear-to-send responses to the packet on the one or more channels. An apparatus of a HEW station is also disclosed. The HEW station including circuitry configured to receive a packet that indicates a MU-RTS that indicates channels on which the HEW station is to transmit a CTS, and to determine whether to send the CTS.
Contention-based reservations of network resources
In a wireless (e.g., machine-to-machine) network, items of user equipment compete for wireless communication resource slots (resources). In a contention period, an item of user equipment (a UE) sends a first signal to a base station using a first resource. The first resource is mapped to a second resource in a data transmission period. If the base station successfully receives the first signal, it sends a second signal to the UE to confirm that the UE has been awarded the second resource and can transmit data in the data transmission period.
INTELLIGENT DEPLOYMENT CASCADE CONTROL DEVICE BASED ON AN FDD-OFDMA INDOOR SMALL CELL IN MULTI-USER AND INTERFERENCE ENVIRONMENTS
The invention presents an intelligent deployment cascade control (IDCC) device for frequency division duplexing (FDD)-orthogonal frequency division multiplexing access (OFDMA) indoor small cell to enable easy installation, multi-user (MU) service reliability, optimum throughput, power saving, minimum interference and good cell coverage. The proposed IDCC device is designed with a cascade architecture, which mainly contains five units including a resource allocator, a minimum throughput/cell edge CQI converter, an adaptive neural fuzzy inference system (ANFIS) based initial transmit power setting controller (ITPSC) in the first cascade unit, an ANFIS based channel quality index (CQI) decision controller (CQIDC) in the second cascade unit and an ANFIS based self-optimization power controller (SOPC) in the third cascade unit. The SOPC consists of three parts, namely the transmit power adjustment estimator (TPAE), transmission power assignment and self-optimization power controller protection mechanism.
SYSTEM AND METHOD FOR DYNAMIC MULTICARRIER ALLOCATION TO NB-IoT DEVICES
Present disclosure generally relates to wireless communication and particularly relates to system and method for dynamic multicarrier allocation to NB-IoT devices. Method includes receiving from PMS, PRB utilization data for a time slot or data packets, and comparing PRB utilization duration in received PRB utilization data with pre-defined threshold PRB utilization duration. Requesting via NB-IoT eNB, cumulative NACK percentage report corresponding to ARFCN/PRB, if PRB utilization duration is less than a pre-defined threshold. Method includes selecting, ARFCN/PRB for a time slot, based on PRB utilization data and cumulative NACK percentage report and pre-defined value. Method includes establishing connection between NB-IoT enabled devices and NB-IoT eNB, upon transmitting via LTE eNB, information associated with selected ARFCN/PRB for time slot, to NB-IoT eNB. Method includes notifying LTE eNB, representative of utilization of ARFCN/PRB as non-anchor carrier. Method includes allocating ARFCN/PRB as non-anchor carrier to schedule NB-IoT enabled devices for data transfer in selected time slot.