Precision timing for low-complexity user devices in 5G/6G networks

    公开(公告)号:US11950197B2

    公开(公告)日:2024-04-02

    申请号:US18369154

    申请日:2023-09-16

    IPC分类号: H04L1/00 H04L7/00 H04W56/00

    CPC分类号: H04W56/005 H04L7/0037

    摘要: Timing is crucial for next-generation networks at 5G and 6G high frequencies. Disclosed are very brief timing signals, and low-complexity procedures for processing them, to obtain a precision time-base lock between a base station and its user devices. In contrast to conventional modulation, the disclosed timing signals feature a change in modulation centrally positioned in a timing resource element. Since the time boundaries of the resource element at the receiver are determined by the receiver's clock, while the actual time of the timing signal is determined by the base station's clock, a displacement of the received timing signal from the midpoint of the resource element indicates a clock offset between the user device and the base station. In addition, by measuring the interval between successive timing signals, the user device can correct its clock rate, and thereby bring the subcarrier frequencies into agreement with the base station.

    AI Model with Error-Detection Code for Fault Correction in 5G/6G

    公开(公告)号:US20240063942A1

    公开(公告)日:2024-02-22

    申请号:US18502054

    申请日:2023-11-05

    IPC分类号: H04L1/00

    摘要: Message faulting is a critical unsolved problem for 5G and 6G. Disclosed herein is a method for combining an AI-based analysis of the waveform data of each message element, plus the constraint of an associated error-detection code (such as a CRC or parity construct of the correct message) to localize and, in many cases, correct a limited number of faults per message, without a retransmission. For example, the waveform data may include a deviation of the amplitude or phase of a particular message element, relative to an average of the amplitudes or phases of the other message elements that have the same demodulation value. The outliers are thereby exposed as the most likely faulted message elements. In addition, using the error-detection code, the AI model can determine the most likely corrected message, thereby avoiding retransmission delays and power usage and other costs.

    Incremental realtime signal-quality feedback in 5G/6G

    公开(公告)号:US11871254B2

    公开(公告)日:2024-01-09

    申请号:US18191015

    申请日:2023-03-28

    IPC分类号: H04W24/06 H04W24/10

    CPC分类号: H04W24/06 H04W24/10

    摘要: A base station can maintain a transmission beam toward a user device, even in changing conditions, by realtime incremental feedback in 5G and 6G. The incremental feedback is a compact one-of-three request, from the user device, indicating a higher, keep-same, or lower adjustment of a transmission parameter such as the power or beam angle. The base station then adds or subtracts a predetermined increment to that transmission parameter, thereby improving reception with each downlink message. Such incremental adjustment continues with each message to the user device, until the optimum value is reached, at which time the user device selects the keep-same choice. For efficient optimization, the base station can vary the increment size, for example escalating to larger sizes upon repeated same-sign requests, and then de-escalating to smaller increments for fine-tuning and beam optimization. Many other aspects are disclosed.

    Resource-Efficient Polling Method for Delivering Messages to 5G/6G Users

    公开(公告)号:US20230413378A1

    公开(公告)日:2023-12-21

    申请号:US18222656

    申请日:2023-07-17

    IPC分类号: H04W76/28 H04W68/00

    CPC分类号: H04W76/28 H04W68/005

    摘要: Many wireless receivers in 5G and 6G are expected to use DRX (discontinuous reception) to save power. What is lacking is an efficient procedure to inform the DRX users that they have an incoming message on hold at the base station. Therefore, a procedure is disclosed for the base station to assign each user device to a section and a position within that section. Then the base station can periodically broadcast a polling message including only those sections that have at least one waiting with a message on hold. In addition, each user device is assigned a single bit at a calculated position in the polling message, so that each DRX user can determine when it has a message on hold. In addition, the base station can assign an equally compact and efficient reply region for each ready user to request its message, thereby saving time and resources.

    Fault Detection, Localization, and Correction by 5G/6G Signal Quality

    公开(公告)号:US20230379103A1

    公开(公告)日:2023-11-23

    申请号:US18224280

    申请日:2023-07-20

    IPC分类号: H04L1/20

    CPC分类号: H04L1/206 H04L1/201

    摘要: A major goal of 5G and especially 6G is reliable, low-latency communication. Unfortunately, higher density networks result in increasing interference, and higher frequency bands inevitably have signal fading problems, leading to frequency message faults. To restore high-speed, high-reliability messaging, methods are disclosed for evaluating the signal quality of each message element of a received message so that any faulting can be localized to the message elements with the lowest signal quality. Numerous contributions to signal quality are disclosed, including modulation, amplitude and phase stability, polarization and inter-symbol irregularities, expected message format and meaning, and common or unexpected bit sequences. Many further aspects are included.