Beam Number Adaptation for Flexible Signal Transmission
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Solution Overview
Problem
Existing communication systems lack flexibility in determining the number of beams for signal transmission, which affects beamforming gain and cannot meet the diverse service types and requirements of evolving wireless communication technologies.
Innovation Solution
A method and device that dynamically determine the number of beams based on numerology and operating frequency band, allowing for flexible beamforming to achieve a better tradeoff between signal overhead and beamforming gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pre-configured fixed number of beams is used for signal transmission, then the system configuration is simple, but the beamforming gain is insufficient and cannot adapt to diverse service requirements
Solution Approach 1:
The patent implements dynamic beamforming by allowing the base station to flexibly determine the number of beams (N) based on current transmission requirements, service types, and channel conditions. This dynamic adjustment mechanism enables the system to adapt to diverse service types (e.g., eMBB, uRLLC, mMTC) while maintaining configuration simplicity through automated decision-making algorithms that select appropriate beam numbers without complex manual configuration.
2Reliability
If the number of beams is increased to improve beamforming gain, then transmission performance improves, but signal overhead and hardware costs increase
Solution Approach 1:
The patent dynamically changes the parameter of beam number (N) based on transmission characteristics, service types, and frequency bands. By adjusting this key parameter flexibly rather than using a fixed large number of beams, the system achieves sufficient beamforming gain for different scenarios while controlling signal overhead. For example, using fewer beams for coverage scenarios and more beams for high-data-rate scenarios optimizes the tradeoff between performance and overhead.
3Productivity
If more beams are used for high-frequency communication, then transmission efficiency improves, but hardware costs increase
Solution Approach 1:
The patent implements dynamic adaptation of beam number based on operating frequency band. For high-frequency bands (mmWave) where path loss is severe, the system dynamically increases the number of beams to maintain transmission efficiency. For lower frequency bands, it reduces the beam number to decrease hardware complexity. This dynamic frequency-dependent beamforming achieves high transmission efficiency when needed while avoiding unnecessary hardware complexity in other scenarios.
Data Source
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AI summary
Disclosed in an embodiment of the invention are a method and device for transmitting a signal. The method comprises: a first device determining, according to a base parameter set and/or an operating frequency band used to transmit signals, the number of wave beams used to transmit the signals, or determining a number of the transmitted signals N, where N is a positive integer; and the first device transmitting, according to the number of wave beams or the number of the transmitted signals N, the signals with a second device. The method and device of the embodiment of the invention can flexibly determine, according to a transmission characteristic between a terminal device and a network, the number of wave beams used to transmit signals, or determine the number of the transmitted signals, thereby obtaining better beamforming gain.