摘要:
Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a single CSI process is defined that is configured with an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.
摘要:
Embodiments described herein provide for the granular network-based detection of UE location in a RAN that includes one or more mobile base stations using quantum computing. Mobile base stations may be, for example, affixed on vehicles (e.g., cars, trucks, drones, etc.), may be implemented by other UEs, and/or may otherwise be non-stationary. In contrast, fixed base stations may be mounted to towers, buildings, or other types of permanent or semi-permanent installations. Quantum computing techniques, as described herein, may aid in the precise determination of UE location using triangulation techniques and/or other network-based location techniques. Further, in RANs that include mobile base stations, the locations of both the UE and a reference point may change relatively rapidly. The use of quantum computing, as described herein, may aid in the fast and precise determination of UE location in situations where mobile base stations and/or UEs are moving rapidly.
摘要:
A photoelectric sensor uses a selective pulse detection technique and associated synchronization techniques to improve the quality of pulse detection, the operating range of the sensor, and the sensor's immunity to noise. These improvements also yield faster sensor response times and reduce the design cycle time. A modulated light beam emitted by the sensor's emitter comprises multiple pulse periods, with a pulse being transmitted within each period. The pulses are positioned within their respective periods at a defined offset time relative to the start of the periods, where the offset time can vary between periods according to a defined pattern. The receiver can selectively sample the signal based on synchronization information to determine whether the received signal contains the emitted pulse pattern. Through-beam sensor embodiments can generate the synchronization information internally based on an analysis of the analog signal corresponding to the modulated signal.
摘要:
A system and related method for minimizing co-channel interference in air-to-ground single-frequency networking includes aircraft-based directional and omnidirectional antenna arrays for transmitting to single frequency networks (SFN) (e.g., LTE, HSPA) and their cell sites. The directional array may encompass several cell sites to take advantage of C-RAN architectures. The system may default to the directional array to establish or re-establish network access, identifying accessible networks and sites and monitoring corresponding synchronization cell counts. The system may minimize co-channel interference with terrestrial network users by switching to the directional array if the count of accessible cell sites or networks becomes high enough, or due to additional factors (e.g., climbing above a threshold altitude). Similarly, the system may switch to the omnidirectional array if the cell count drops below a threshold level.
摘要:
Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a single CSI process is defined that is configured with an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.
摘要:
Disclosed is a relay method including: receiving, as input, respective reception signals by two receive antennas, the reception signals each including a reception signal resulting from multiplexing respective transmission signals transmitted by two transmission antennas in a first frequency band; performing frequency conversion on the reception signal received by one of the receive antennas so as to obtain a signal of a third frequency band; and performing frequency multiplexing on the signal having the third frequency band and the reception signal received by the other of the receive antennas.
摘要:
An apparatus for repeating signals includes a receive antenna for capturing a receive signal, processing circuitry for processing the receive signal to form a repeated signal, and a transmit antenna for transmitting the repeated signal. The processing circuitry includes gain circuitry for gain in the repeated signal and decorrelation circuitry configured for modifying the repeated signal with respect to the receive signal to thereby decorrelate the repeated signal from the receive signal. The processing circuitry further comprises circuitry configured for calculating a gain margin for the apparatus utilizing the decorrelated receive and repeated signals.
摘要:
A sampling device for sampling an incoming signal in order to generate an output signal having a different frequency spectrum from the incoming signal. The device comprises a sampler configured to sample the incoming signal at a series of intervals in time, wherein the series of intervals includes a temporally repeating sequence of intervals, and wherein the duration of successive intervals varies throughout the series.
摘要:
A signal repeater (200) includes a signal processing part (202) and a signal repeating part (204). The signal processing part includes a converter (300) configured to receive an input signal and to convert the input signal into quadrature signals, and a processor (302, 304, 306) configured to process the quadrature signals to determine one or more characteristics of the input signal, and to compare the one or more characteristics of the input signal and a plurality of predetermined characteristics to generate a comparison result. The signal repeating part (204) is configured to selectively repeat the input signal as a repeated signal in accordance with the comparison result.
摘要:
A sampling device for sampling an incoming signal in order to generate an output signal having a different frequency spectrum from the incoming signal. The device comprises a sampler configured to sample the incoming signal at a series of intervals in time, wherein the series of intervals includes a temporally repeating sequence of intervals, and wherein the duration of successive intervals varies throughout the series.