UE Autonomous SCell Connection Establishment
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Solution Overview
Problem
Current wireless communication systems face delays and increased signaling requirements when a wireless device needs to connect to non-collocated small cells, particularly in scenarios involving multiple frequency layers and diverse network topologies, as existing technologies rely on base station coordination which is inefficient for multiflow operations.
Innovation Solution
A wireless device autonomously identifies and selects a secondary cell based on selection parameters received from a primary cell, allowing it to establish an independent connection without base station involvement, thereby reducing signaling load and enabling concurrent communication with both cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base station coordination is used for connecting wireless device to non-collocated small cells, then connection reliability is improved, but connection establishment time increases and signaling requirements increase
Solution Approach 1:
The patent segments the connection establishment process into two phases: (1) base station coordinates and provides selection parameters to the wireless device, and (2) the wireless device autonomously completes the connection to the small cell. This segmentation allows the base station to provide guidance while the device performs the actual connection independently, reducing overall establishment time while maintaining reliability through initial coordination.
Solution Approach 2:
The base station performs preliminary actions by providing selection parameters and candidate cell information to the wireless device before the actual connection establishment. This preliminary coordination enables the device to quickly identify and connect to the appropriate small cell without requiring real-time base station involvement in the connection process, thus reducing connection establishment time while maintaining reliability.
2Reliability
If base station coordination is used for connecting wireless device to non-collocated small cells, then connection reliability is improved, but signaling requirements increase
Solution Approach 1:
The patent extracts the detailed connection establishment signaling from the base station and transfers it to the wireless device. The base station only provides essential selection parameters and candidate cell information, while the device autonomously handles the actual connection signaling with the small cell. This extraction significantly reduces the signaling load on the base station while maintaining connection reliability through the device's autonomous capability.
3Loss of time
If autonomous device selection is used for connecting to non-collocated cells, then connection establishment time is reduced and signaling requirements are reduced, but device complexity increases
Solution Approach 1:
The base station performs preliminary actions by providing the device with selection parameters, candidate cell lists, and connection criteria before the autonomous selection process. This preliminary guidance reduces the complexity of the autonomous selection task, as the device only needs to evaluate a limited set of pre-qualified candidates rather than performing complex searches and evaluations independently.
4Productivity
If autonomous device selection is used for connecting to non-collocated cells, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent segments the connection establishment process into base station coordination phase and device autonomous execution phase. The base station handles the complex tasks of providing selection parameters and candidate cell information, while the device focuses on autonomous selection and connection establishment. This segmentation enables faster connection establishment (improved productivity) while distributing complexity appropriately between network and device.
Data Source
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AI summary
Methods, systems, devices, and apparatuses are described for wireless communications in which a wireless device may identify a small cell (e.g., SCell) and establish an independent connection with the small cell based at least in part on selection parameters received from a macro cell (e.g., PCell). The selection parameters may include power and/or quality parameters, as wells as a set of candidate cells from which to make the selection. The macro and small cells may be in communication with each other but need not be associated with the same base station (i.e., are not collocated). Once the small cell connection is established, the device may communicate with both cells concurrently. Available uplink data and/or downlink data may trigger the need for the device to connect with the small cell. For example, the small cell connection may be used to communicate uplink/downlink data associated with certain quality-of-service (QoS) and/or bearer identifier.