Beam Grouping Indication Feedback for 5G Scheduling
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Solution Overview
Problem
Existing wireless communication technologies face challenges in managing and scheduling transmission beams and receiving beams flexibly due to their unique transmission characteristics, particularly in high-frequency 5G communications, which limits the flexibility and efficiency of beam management and spatial division multiplexing.
Innovation Solution
A method and device for acquiring and notifying grouping indication information, allowing for the determination and feedback of transmission and reception parameters, enabling flexible grouping of resources based on channel quality, quasi-co-location, and other characteristics, to improve beam management and scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antenna elements are arranged in a small area to obtain high gains and narrow beams, then path losses are reduced and cell coverage is increased, but beam management complexity increases and flexible scheduling becomes difficult
Solution Approach 1:
The patent segments the beam management process into distinct phases: beam training for initial alignment and beam scheduling for data transmission. By separating these functions, the system can maintain multiple aligned beam pairs without requiring complex real-time management of all possible combinations, thus reducing beam management complexity while preserving coverage reliability
Solution Approach 2:
The patent performs beam training in advance to establish multiple aligned beam pairs between transmitting and receiving ends before actual data transmission. This preliminary action creates a pool of pre-aligned beams that can be quickly scheduled during data transmission without requiring complex real-time beam alignment procedures
2Productivity
If the transmitting end schedules one or more beams from multiple aligned beams based on system performance, then transmission efficiency is improved, but the transmitting end faces big restrictions on flexibly adjusting transmission beams
Solution Approach 1:
The patent enables dynamic beam scheduling where the transmitting end can flexibly select and switch between multiple pre-aligned beams based on real-time channel conditions and system performance. The system maintains a pool of aligned beam pairs and allows dynamic adjustment of which beams are active for transmission, providing both efficiency through scheduled selection and flexibility through adaptive reconfiguration
Solution Approach 2:
The patent implements feedback mechanisms where receiving end information about channel quality and beam performance is transmitted back to the transmitting end. This feedback enables the transmitting end to make informed decisions about beam selection and adjustment, balancing transmission efficiency with the ability to adapt to changing conditions
3Reliability
If beam training is performed between two nodes to enable transmission based on aligned beams, then communication reliability is improved, but the process cannot support spatial division multiplexing transmission
Solution Approach 1:
The patent segments the beam resources into multiple independent beam pairs that can be simultaneously used for different spatial streams. Instead of performing separate beam training for each spatial stream, the system performs beam training once per antenna pair and then reuses these aligned beams for spatial division multiplexing, thus maintaining reliability while enabling multiplexing productivity
Solution Approach 2:
The patent makes the beam training results universal by establishing aligned beam pairs that can serve multiple purposes: individual beam transmission and spatial division multiplexing. The same set of aligned beams can be used for both reliable point-to-point communication and for supporting multiple spatial streams simultaneously, eliminating the need for separate beam training procedures
Data Source
AI summary
Provided are a method for transmitting and receiving beams, and a transmitting end and a receiving end. The method for transmitting beams includes: determining, by a transmitting end, X transmission beam groups, where X is an integer greater than or equal to 1; and transmitting, by the transmitting end, one or more transmission beams according to the X transmission beam groups, where the one or more transmission beams belong to the X transmission beam groups. Different transmission beams in a same transmission beam group of the X transmission beam groups are transmitted by the transmitting end only at different time; and transmission beams respectively belonging to different transmission beam groups are able to be transmitted by the transmitting end at the same time.