Multi-RAN Signaling for Dual Stack UE Connectivity
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Solution Overview
Problem
Wireless communications systems face challenges in complex and dynamic environments that attenuate or block signals, necessitating improvements in speed, data capacity, efficiency, power usage, reliability, coverage, and device connectivity, including the need for enhanced dual connectivity configurations.
Innovation Solution
Implementing signaling designs that enable user equipment (UE) to communicate its dual stack capability and measurement reports across different radio access networks (RANs), allowing simultaneous connections to enhance throughput, mobility, and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE connects to multiple RANs simultaneously, then throughput and reliability are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the dual connectivity management into distinct phases: initial connection establishment with one RAN, measurement of second RAN signals, and conditional handover execution. This segmentation allows the UE to manage multiple RAN connections systematically, improving reliability without overwhelming device complexity by breaking down the complex multi-RAN management into manageable sequential steps
Solution Approach 2:
The patent implements preliminary measurement actions where the UE measures signals from a potential second RAN before actually establishing a connection. This preliminary action allows the network to assess signal quality and determine optimal handover conditions in advance, enabling reliable multi-RAN connectivity while avoiding unnecessary connection attempts that would increase device complexity
2Productivity
If signaling messages include detailed measurement information, then connection optimization is improved, but message size and processing overhead increase
Solution Approach 1:
The patent extracts only the essential measurement information needed for dual connectivity decisions from the full set of available measurements. Specifically, it identifies and transmits key parameters such as reference signal received power (RSRP) and reference signal received quality (RSRQ) that are sufficient for RAN selection, excluding redundant measurement data. This extraction maintains connection optimization efficiency while significantly reducing message size and processing overhead
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for dual stack configuration and operation. A method generally includes sending one or more indications of apparatus information comprising one or more of: user equipment (UE) control plane assistance information, of the apparatus, related to a first radio access network (RAN), wherein the UE control plane assistance information is sent to a second RAN; capability information of a capability of the apparatus to be connected to both the first RAN and the second RAN at a same time; or a measurement report comprising measurement information related to communications on the second RAN, wherein the measurement information is based on a measurement configuration obtained from the first RAN; obtaining configuration information associated with the second RAN; and communicating, based on the configuration information, with the second RAN.