Wireless Beam Resource Selection for Reduced System Overhead
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Solution Overview
Problem
In wireless communication systems, the use of massive MIMO beamforming leads to increased system resource overheads due to the need for multiple narrow beams to cover all user equipment in a cell, resulting in inefficient use of resources and interference on invalid spatial resources.
Innovation Solution
A method where a first network device sends identification information with first signals using different spatial resources, allowing a second network device to select and indicate the appropriate resources, enabling the first device to determine and use a smaller set of spatial resources to meet coverage requirements, thereby reducing resource overheads and avoiding interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple narrow beams are used to cover all user equipment in a cell, then coverage requirement is met, but system resource overhead increases
Solution Approach 1:
The patent segments the beam coverage into two distinct sets: wide beams for initial coverage and access signals, and narrow beams for dedicated user service. This segmentation allows different beam types to perform specialized functions, avoiding the need to use all narrow beams for all purposes, thereby reducing system resource overhead while maintaining complete coverage.
Solution Approach 2:
The patent implements dynamic beam selection where the base station determines which narrow beams to activate based on actual user equipment distribution and service requirements. Instead of statically activating all narrow beams, the system dynamically adjusts the active beam set, reducing resource overhead when fewer beams are sufficient to cover all UEs.
2Ease of operation
If access signals are sent by using each narrow beam, then user equipment can access the network, but system resource overhead increases due to unused beams
Solution Approach 1:
The patent divides the beam function into two segments: wide beams handle access signals and synchronization information for all UEs, while narrow beams are reserved for dedicated user services. This segmentation eliminates the waste of using narrow beams for access signals that wide beams can handle more efficiently, reducing system resource overhead while maintaining network access capability.
Solution Approach 2:
Wide beams are designed to perform multiple functions including transmitting access signals, synchronization information, and covering the entire cell area. This multi-functionality of wide beams reduces the need to use narrow beams for access purposes, thereby reducing system resource overhead while ensuring UEs can access the network.
3Reliability
If narrow beams are used to cover the cell, then communication requirements of user equipment are met, but interference occurs on invalid spatial resources
Solution Approach 1:
The patent extracts the access signal transmission function from narrow beams and assigns it to wide beams. By removing this function from narrow beams, the system eliminates interference on narrow beam spatial resources that would otherwise be wasted when not needed for user services, while maintaining communication reliability through the dedicated narrow beam set.
4Loss of energy
If a large antenna gain is formed, then path loss is compensated, but spatial coverage width decreases
Solution Approach 1:
The patent segments the beamforming function into wide beams with lower antenna gain for broad coverage and access, and narrow beams with high antenna gain for focused user service. This segmentation allows the system to compensate for path loss using narrow beams where needed while using wide beams for area coverage, avoiding the trade-off by applying different gain levels to different functional requirements.
Solution Approach 2:
The patent applies local quality by using high antenna gain (narrow beams) only in specific directions where user equipment requires service, rather than uniformly across the entire cell. Wide beams with lower gain are used for general coverage. This localized application of high gain reduces unnecessary interference in directions without UEs while maintaining path loss compensation where needed.
Data Source
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Figure 3
Figure 4a
AI summary
Embodiments of the present invention relate to the field of communications technologies and provide a wireless communication method and system, and a device, so as to resolve a problem of large system overheads caused in the prior art in which each beam is used to send a wireless signal to serve user equipment in a narrow beam coverage scenario. A solution is as follows: A first network device determines m first signals, a first spatial resource corresponding to each first signal, and a resource set to which each first spatial resource belongs, and sends a first signal on each corresponding first spatial resource; a second network device determines a response signal according to at least one received first signal, a first spatial resource corresponding to a first signal, and a resource set to which each first spatial resource belongs, and sends the response signal to the first network device; and the first network device sends a second signal to the second network device on k second spatial resources according to the received response signal. The embodiments of the present invention are used for wireless communication.