Non-Anchor Cell SSB Transmission for Multi-Carrier UE Synchronization
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting synchronization signal block (SSB) transmissions in non-anchor cells, leading to suboptimal performance of user equipment (UE) in multi-carrier operations due to the inability to handle cell-defining SSBs (CD-SSBs) versus non-cell-defining SSBs (NCD-SSBs) in non-anchor cells.
Innovation Solution
The implementation of techniques that allow user equipment (UE) to receive and initiate procedures based on either CD-SSBs or NCD-SSBs via non-anchor cells, enabling improved support for SSB transmissions and enhancing UE performance in multi-carrier operations by configuring the type of SSB supported on these cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SSB transmissions are supported in non-anchor cells, then UE performance in multi-carrier operations is improved, but device complexity increases due to the need to handle both CD-SSBs and NCD-SSBs
Solution Approach 1:
The patent implements dynamic SSB transmission where the network can configure non-anchor cells to transmit either CD-SSBs or NCD-SSBs based on operational requirements. The UE adapts its behavior dynamically by detecting the SSB type through configuration parameters and adjusting its synchronization and cell selection procedures accordingly, rather than supporting both types simultaneously in all cells.
Solution Approach 2:
The patent applies different SSB transmission characteristics to different cells based on their specific roles. Anchor cells transmit CD-SSBs with full synchronization information, while non-anchor cells can transmit NCD-SSBs with reduced information or CD-SSBs only when needed. This localized differentiation optimizes UE performance in multi-carrier operations without requiring uniform complex handling across all cells.
2Reliability
If non-anchor cells transmit CD-SSBs, then connection setup is improved, but network energy consumption increases
Solution Approach 1:
The patent implements periodic or on-demand SSB transmissions in non-anchor cells rather than continuous transmissions. The network configures non-anchor cells to transmit CD-SSBs or NCD-SSBs at specific periods or triggered by certain conditions, reducing overall network energy consumption while maintaining reliable connection setup when needed.
Solution Approach 2:
The patent extracts the essential synchronization function from all cells and concentrates full CD-SSB transmission capability primarily in anchor cells. Non-anchor cells can provide basic synchronization through NCD-SSBs or selective CD-SSB transmissions, removing the requirement for every non-anchor cell to continuously transmit full CD-SSBs, thereby reducing network energy consumption while preserving connection setup reliability through the anchor cell infrastructure.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, via a non-anchor cell in a multi-carrier operation, a synchronization signal block (SSB), wherein the SSB is a cell defining SSB (CD-SSB) or a non-cell-defining SSB (NCD-SSB). The UE may initiate a procedure based at least in part on the SSB. Numerous other aspects are described.