Multi-Carrier Wireless Control Signaling and Network Entry
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Solution Overview
Problem
Current wireless communication techniques face challenges in efficiently managing network entry, handover, and channel quality feedback in multi-carrier wireless environments, particularly with limited channel bandwidth and the need for cost-effective high-speed data delivery.
Innovation Solution
The method involves a base station (BS) and subscriber station (SS) interacting through primary and secondary carriers, where the BS sends control information to determine network entry, perform handovers, manage sleep modes, and provide channel quality feedback, using multiple antennas for spatial and temporal diversity to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple carriers are used in a wireless system, then data capacity and service diversity are improved, but network complexity and management difficulty increase
Solution Approach 1:
The patent segments the wireless communication system into primary carriers and secondary carriers, where primary carriers handle control signaling and essential data, while secondary carriers provide additional data capacity. This segmentation allows the system to scale capacity by adding secondary carriers without proportionally increasing control complexity, as the primary carrier management remains relatively simple and standardized.
2Reliability
If control information is sent over primary carriers, then network entry reliability is improved, but control overhead and bandwidth consumption increase
Solution Approach 1:
The patent merges control signaling and data transmission by allowing control information to be conveyed through data fields within the existing data transmission framework. Specifically, the base station embeds control information in the uplink grant field of the MAC protocol data unit, enabling dual-purpose use of the transmission channel and reducing dedicated control overhead while maintaining reliability through the robustness of the primary carrier.
3Quantity of substance
If multiple antennas are used for MIMO transmission, then data capacity and spatial diversity are improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent segments the MIMO processing into distinct functional blocks including spatial multiplexing, spatial diversity, and beamforming modules. Each antenna element and processing path is divided into independent but coordinated units, allowing the system to achieve high data capacity through parallel processing while managing complexity through modular architecture and standardized interface protocols between processing stages.
Data Source
AI summary
The present disclosure generally relates to an uplink control signal design for wireless system. One example method of a subscriber station (SS) includes performing network entry in a multi-carrier wireless environment using a primary carrier, receiving timing information corresponding to the primary carrier, receiving a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier, transmitting uplink data via the secondary carrier using an uplink transmission timing of the secondary carrier, the uplink transmission timing of the secondary carrier being assigned the same as an uplink transmission timing of the primary carrier, and determining an adjustment of the uplink transmission timing or frequency of the secondary carrier.