SFN Connection Establishment Using TRP Access Information
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Solution Overview
Problem
User equipment (UE) in mobile communication systems experiences high power consumption due to frequent cell handovers and measurements in dense networks and high-speed scenarios, particularly when establishing connections in single frequency networks (SFN).
Innovation Solution
The UE receives or sends access-related information to establish connections with specific cells or transmission reception points (TRPs) within an SFN cell group, reducing the need for frequent cell measurements and handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If UE camps on cell layer/TRP layer when establishing connection in SFN, then connection establishment is possible, but power consumption is excessively high
Solution Approach 1:
The patent segments the connection establishment process into two distinct phases: SFN-level connection establishment using SFN-RNTI for initial access, followed by cell-specific connection establishment using cell-specific RNTI. This segmentation allows the UE to first establish a connection at the SFN level (reducing power consumption by avoiding frequent cell measurements) and then transition to cell-specific operations only when necessary, thereby resolving the contradiction between power consumption and connection establishment ease.
2Reliability
If UE performs frequent cell handover and measurements in dense networks, then connection quality is maintained, but power consumption increases significantly
Solution Approach 1:
The patent introduces SFN-RNTI as an intermediary identifier that enables the UE to establish and maintain connections at the SFN level without requiring continuous cell-specific measurements and handovers. This intermediary mechanism allows the network to manage multiple cells/TRPs within the SFN collectively, maintaining connection quality while significantly reducing the UE's power consumption by eliminating frequent measurement and handover operations.
3Use of energy by moving object
If UE camps on SFN cell group, then power consumption is reduced, but access information availability is limited
Solution Approach 1:
The patent implements preliminary action by having the network pre-configure and transmit SFN-level access information (including SFN-RNTI and initial access parameters) to the UE before the UE needs to establish a connection. This allows the UE to camp on the SFN cell group with complete access information already available, reducing power consumption while ensuring that all necessary access-related information is obtained in advance without requiring subsequent cell-specific information gathering.
Data Source
AI summary
This application discloses a connection establishment method, apparatus, device, and storage medium. The method includes: receiving, by user equipment UE camp on or connected to a single frequency network SFN cell group, access-related information sent by a network-side device; and establishing a connection with a target cell based on the access-related information, where the target cell is a cell/TRP layer specific cell or transmission reception point.