Flexible Beam Random Access in Millimeter Wave Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in managing flexible beam communications in systems with directional antennas or antenna arrays, particularly in meeting the increasing demand for mobile data traffic, as existing technologies are not optimized for commercial mobile communication with wider coverage in the millimeter wave band, leading to limitations in beam formation and usage due to physical device constraints.
Innovation Solution
The implementation of methods and apparatus for flexible beam communication in random access from mobile stations to base stations, allowing for different capabilities and qualities of communication channels in both mobile and base stations, using directional antennas or antenna arrays, and leveraging the millimeter wave band for high-gain antennas in a small form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If directional antennas or antenna arrays are used in millimeter wave band, then high-gain and small form factor are achieved, but beam formation and usage are limited due to physical device constraints
Solution Approach 1:
The patent implements dynamic beam management where the base station can flexibly configure and switch between different receive beams based on mobile station positions and channel conditions. The beam configuration is not fixed but can be dynamically adjusted through signaling messages that inform mobile stations about beam patterns, durations, and timing, allowing the system to adapt to changing environmental conditions while maintaining high gain performance.
Solution Approach 2:
The system changes operational parameters such as beam duration, timing configurations, and beam patterns to optimize performance. By varying these parameters based on channel quality and traffic requirements, the system can overcome physical device constraints and achieve flexible beam communication without sacrificing antenna gain in the millimeter wave band.
2Device complexity
If existing technologies are used, then device complexity is reduced, but they are not optimized for commercial mobile communication with wider coverage in the millimeter wave band
Solution Approach 1:
The patent segments the beam management process into distinct phases and components: beam configuration signaling, beam pattern definition, duration specification, and timing coordination. This segmentation allows the complex millimeter wave communication functionality to be implemented in a structured manner that manages device complexity while enabling wide coverage through coordinated beam operations across multiple mobile stations.
Solution Approach 2:
The base station implements a universal beam management mechanism that can serve multiple mobile stations with different capabilities and channel conditions using the same framework. The system provides multi-functional support for various beam configurations, durations, and patterns, allowing a single system design to handle diverse millimeter wave communication scenarios without requiring separate specialized hardware for each case.
3Productivity
If beam communication is enhanced for flexible management, then capacity in wireless networks increases, but device complexity and coordination requirements increase
Solution Approach 1:
The system implements feedback mechanisms where the base station monitors beam performance and mobile station reception quality, then adjusts beam configurations accordingly. This feedback loop enables the network to optimize capacity by dynamically adapting beam parameters based on actual channel conditions, while the automated nature of the feedback process prevents excessive complexity from manual intervention.
Solution Approach 2:
The base station performs preliminary beam configuration and signaling before actual data transmission occurs. By pre-defining beam patterns, durations, and timing in advance through signaling messages, the system prepares the communication channels ahead of time, which simplifies the real-time transmission process and reduces the complexity of on-the-fly beam management while maximizing network capacity utilization.
Data Source
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AI summary
A mobile station performs a method for random access in a wireless network. The method includes receiving, from a base station, information regarding a configuration of at least one receive beam of the base station to receive a random access signal. The method also includes configuring at least one transmit beam for a transmission of the random access signal based on the configuration information from the base station. The method further includes transmitting the random access signal to the base station on the at least one transmit beam.