Synchronized Frame Reservation for 5G NR Interference
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficient resource management due to bursty transmission patterns and interference between uplink and downlink transmissions in TDD systems, leading to suboptimal resource allocation and increased interference.
Innovation Solution
Implementing a synchronized fixed frame structure with dynamic TDD, where each base station has protected control slots for reservation exchanges, allowing neighboring stations and UEs to detect intended communications and adjust scheduling to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic TDD is used to assign resources for uplink and downlink transmission, then resource allocation flexibility is improved, but interference between uplink and downlink transmissions increases
Solution Approach 1:
The patent implements a reservation channel at the beginning of each frame where base stations perform reservation exchanges before actual data transmission. This preliminary action allows base stations to declare their intended uplink/downlink assignments in advance, enabling neighboring base stations to adjust their scheduling to avoid conflicts and reduce interference while maintaining dynamic TDD flexibility.
Solution Approach 2:
The reservation exchange mechanism provides feedback between neighboring base stations about their intended transmissions. Each base station receives reservation information from neighbors and uses this feedback to adjust its resource allocation decisions, creating a coordinated system that reduces interference while preserving adaptability.
2Stability of the object's composition
If a fixed frame structure is implemented with synchronized base stations, then coordination between base stations is improved, but resource allocation efficiency decreases
Solution Approach 1:
The patent segments the frame structure into distinct functional parts: a reservation channel portion at the beginning for coordination, and a data channel portion for actual transmissions. This segmentation allows the system to maintain fixed frame synchronization for stability while enabling flexible resource allocation within the data channel portion, thus resolving the contradiction between coordination stability and allocation efficiency.
3Reliability
If control slots are protected for each base station in the reservation channel, then reservation exchange reliability is improved, but system complexity increases
Solution Approach 1:
The patent merges the reservation exchange function into the existing frame structure by allocating specific control slots within the reservation channel. This combining approach ensures reliable reservation exchange through protected time slots while avoiding the need for separate complex coordination mechanisms, thus improving reliability without proportionally increasing system complexity.
Data Source
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AI summary
The present disclosure provides for fast radio resource management procedures for new radio. Generally, a fixed frame structure is utilized and all base stations are synchronized. A base station may transmit a reservation request during a first control slot for the base station in a reservation channel at a beginning of a synchronized frame. A first user equipment may transmit and the base station may receive a reservation response during a second control slot. The base station may receive, from the first UE, after a third control slot of the reservation channel for a neighboring base station, a reservation indication based on a measurement by the first UE of the neighboring base station or at least one other UE associated with the neighboring base station. The base station may determine, based on the resource indication, whether to schedule the first UE during a data channel of the synchronized frame.