Beamforming Frame Structure With Region-Specific Beam Change Timing

The frame structure is segmented into distinct regions including downlink control information region, downlink data region, uplink data region, and uplink control information region. Each region has specific beamforming requirements and resource allocations, making the overall complex beamforming system manageable through modular design.

Different beamforming parameters are applied to different regions within the frame. For example, downlink control information uses specific reference signal patterns while downlink data uses different patterns, allowing optimized beamforming for each local requirement rather than a uniform approach.

The beamforming approach dynamically adjusts beam width and change timing based on the specific region and information type being transmitted. Control information may use wider beams for broader coverage while data transmission uses narrower beams for higher gain, with beam changes synchronized to frame structure boundaries.

Beam changes are performed periodically at defined frame and subframe boundaries rather than continuously, allowing the system to maintain stable narrow beams for the duration of each transmission interval while periodically adjusting to new target directions, simplifying timing management.

The defined frame structure serves multiple functions simultaneously: it organizes resource allocation, defines beamforming parameter changes, specifies reference signal positions, and coordinates uplink-downlink timing. This multi-functionality reduces the need for separate control mechanisms for each aspect.

The frame structure enables systematic parameter changes for beamforming, including cyclic shifts for reference signals, beam width adjustments per region, and timing synchronization points, all managed through standardized parameter definitions rather than ad-hoc configurations.