Multi-Target Sensing Beam Mapping for Unlicensed Channel Access
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Solution Overview
Problem
Existing wireless communication systems struggle to efficiently manage channel occupancy in unlicensed spectrum when communicating with multiple communication targets, particularly in high-frequency ranges, as they lack effective methods to adjust sensing of the radio environment to account for multiple targets and prioritize communication types such as unicast, groupcast, or broadcast.
Innovation Solution
A method and apparatus for determining a sensing beam that encompasses multiple transmission beams associated with prioritized communication targets, involving clear channel assessment and logical channel prioritization to ensure efficient communication with multiple targets, using beamforming techniques and mapping tables to optimize channel access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single sensing beam is used for channel assessment, then the device complexity is reduced, but it cannot account for multiple communication targets and their respective transmission beams
Solution Approach 1:
The patent segments the sensing process by creating multiple sensing beams, each corresponding to a specific transmission beam and communication target. This allows the system to assess channel conditions for each target individually rather than using a single omnidirectional sensing beam, thereby improving adaptability to multiple targets while maintaining manageable complexity through structured beam correspondence.
Solution Approach 2:
The patent establishes a universal mapping relationship between transmission beams and sensing beams that can be applied across different communication scenarios (unicast, groupcast, broadcast). This multi-functional approach allows the same sensing beam structure to serve multiple communication targets and types, improving versatility without proportionally increasing device complexity.
2Measurement precision
If channel sensing is performed for each transmission beam separately, then channel assessment accuracy is improved, but the time required for channel occupancy initiation increases
Solution Approach 1:
The patent performs preliminary channel sensing on transmission beams before actual data transmission begins. By assessing channel conditions in advance and establishing the mapping between sensing beams and transmission beams beforehand, the system prepares the channel occupancy initiation in advance, reducing the time loss during actual transmission startup while maintaining accurate per-beam channel assessment.
3Productivity
If prioritization of communication targets is implemented, then communication efficiency for high-priority targets is improved, but the complexity of managing multiple communication types increases
Solution Approach 1:
The patent applies different sensing and transmission strategies to different communication targets based on their priority and communication type (unicast, groupcast, broadcast). By tailoring the sensing beam selection and channel assessment approach to each specific communication scenario locally, the system improves communication efficiency for high-priority targets while managing complexity through standardized local rules for each communication type.
Data Source
AI summary
A method and apparatus are provided, in which a plurality of L2 destination identifiers associated with a plurality of communication target devices are identified, and a plurality of transmission beams respectively associated with each of the identified plurality of L2 destination identifiers are identified (202). A sensing beam, which includes the plurality of transmission beams is determined (204). An assessment is performed (206) of a channel associated with the sensing beam, A channel occupancy for the user equipment is initiated (208), when a result of the assessment of the channel associated with the sensing beam determines that the channel associated with the sensing beam is clear. The communication target devices, via a transmission, are communicated with, the communication target devices being associated with the L2 destination identifiers that correspond to the transmission beams included in the sensing beam, which was determined as being clear (210).