Subframe Configuration for Wireless Resource Utilization
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Solution Overview
Problem
Current wireless communication systems, such as LTE, face inefficiencies in resource utilization and increased implementation complexity due to the need for multiple guard periods during uplink and downlink transmissions, leading to wasted resources and frequent switching between transmission states.
Innovation Solution
The method involves determining the type of subframe for data transmission, which can be one of four types (first-type, second-type, third-type, or fourth-type), optimizing the placement of uplink and downlink control channels and data transmission to reduce guard periods and switching times, thereby improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple guard periods are set for switching between uplink and downlink transmissions, then transmission reliability is improved, but resource utilization deteriorates and implementation complexity increases
Solution Approach 1:
The patent extracts and removes guard periods from the transmission frame structure where they are not strictly necessary. By identifying that guard periods are only needed at specific switching points (e.g., from downlink to uplink) but not at all switching points, the patent eliminates redundant guard periods, thereby improving resource utilization while maintaining transmission reliability where it matters.
Solution Approach 2:
The patent introduces dynamic subframe configurations that allow the system to adaptively adjust the number and position of guard periods based on actual traffic conditions. Different subframe types (e.g., downlink-heavy, uplink-heavy, balanced) can be selected dynamically, enabling the system to optimize between reliability and resource utilization according to real-time needs rather than using a fixed conservative configuration.
2Reliability
If multiple guard periods are set for switching between uplink and downlink transmissions, then transmission reliability is improved, but device complexity deteriorates
Solution Approach 1:
The patent removes unnecessary guard periods from the transmission structure, directly reducing the number of state switching operations required. This extraction of redundant elements simplifies the implementation complexity of both network devices and user equipment while preserving reliability by maintaining guard periods only where actually needed for proper signal transitions.
Solution Approach 2:
The patent segments the transmission frame into different subframe types with different guard period configurations. By dividing the overall transmission into manageable subframe units with predetermined characteristics, the system reduces the complexity of real-time decision-making about guard period placement, as each subframe type has a known, pre-configured structure.
3Adaptability or versatility
If frequent switching between uplink and downlink transmissions is performed, then transmission flexibility is improved, but resource utilization deteriorates
Solution Approach 1:
The patent implements dynamic subframe configuration that allows the system to adapt transmission directions and guard period placements based on actual traffic conditions. The network can dynamically select different subframe types (downlink-heavy, uplink-heavy, balanced) to match real-time demands, maintaining high transmission flexibility while avoiding unnecessary guard periods that would waste resources.
Solution Approach 2:
The patent changes key parameters such as the number of guard periods, subframe direction allocations, and switching frequencies based on observed traffic patterns. By adjusting these parameters dynamically rather than using fixed values, the system maintains flexibility to adapt to changing conditions while optimizing resource utilization by reducing guard periods during periods of stable, predictable traffic.
Data Source
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Figure 4(a)~5(b)
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AI summary
Embodiments of the present invention relate to the field of wireless communications, and provide a data transmission method and device. The method includes: determining a type of a first subframe, where the type of the first subframe is a first-type subframe, a second-type subframe, a third-type subframe, or a fourth-type subframe, where the first-type subframe includes an uplink control channel and a downlink channel, and the uplink control channel is located before the downlink channel; the second-type subframe includes an uplink control channel and a downlink channel, the uplink control channel is located after the downlink channel, and there is a guard period between the uplink control channel and the downlink channel; the third-type subframe includes an uplink channel and a downlink control channel, and the uplink channel is located before the downlink control channel; and the fourth-type subframe includes an uplink channel and a downlink control channel, the uplink channel is located after the downlink control channel, and there is a guard period between the uplink channel and the downlink control channel; and transmitting data in the first subframe according to the type of the first subframe. The present invention improves utilization of wireless resources.