Non-Access Stratum Capability Exchange for Ethernet PDU Sessions
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Solution Overview
Problem
Wireless communications systems often fail to provide Ethernet over wireless communications due to a lack of information about the wireless device, hindering the device's ability to obtain desired services.
Innovation Solution
A base station requests and receives capability information from a wireless device for Ethernet type packet data unit sessions, enabling the instantiation of such sessions and facilitating handovers with compressed headers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If capability information is not collected from wireless devices, then the system remains simple, but Ethernet over wireless communications cannot be provided
Solution Approach 1:
The base station collects capability information from the wireless device during the initial attachment procedure before establishing Ethernet over wireless communications. This preliminary collection of capability information (support for Ethernet type PDU sessions, PFCP protocol, flow labels) allows the system to prepare and configure appropriate sessions without adding complexity during active communication.
Solution Approach 2:
The base station acts as an intermediary that bridges the wireless device and the core network by collecting capability information and using it to establish appropriate sessions. This intermediary role allows the system to manage complexity centrally while enabling advanced Ethernet over wireless communications at the edge.
2Productivity
If capability information is not transmitted to core network, then signaling is simplified, but service delivery is hindered
Solution Approach 1:
The base station transmits capability information to the core network during the initial attachment procedure, so that service provisioning and session establishment can proceed efficiently without requiring additional signaling rounds later. This preliminary transmission of capability information enables the core network to pre-configure services.
Solution Approach 2:
The capability information transmission is integrated into the continuous attachment procedure rather than being a separate discrete step. This ensures that service delivery readiness is established continuously and efficiently, avoiding interruptions or delays in the overall service establishment process.
3Adaptability or versatility
If Ethernet type PDU sessions are not instantiated, then network configuration is simpler, but desired services cannot be obtained
Solution Approach 1:
The base station and core network change the session type parameter to Ethernet type PDU sessions when capability information indicates support. This parameter change enables advanced services like Ethernet over wireless communications while maintaining simple session management through standardized protocol extensions (PFCP protocol, flow labels).
Solution Approach 2:
The Ethernet type PDU session framework provides multi-functionality by supporting various Ethernet services (Ethernet over wireless, Ethernet untrusted non-3GPP access) through a unified session management approach. This universal framework simplifies management despite the diversity of underlying services.
4Productivity
If compressed headers are not used, then packet processing is simpler, but transmission efficiency decreases
Solution Approach 1:
The base station configures packet processing parameters including header compression based on capability information and session type. Compressed headers are applied to Ethernet type PDU sessions to improve transmission efficiency, with the compression parameters managed through the existing PFCP protocol framework.
Solution Approach 2:
The packet processing system includes self-service mechanisms where the base station automatically applies header compression and manages packet processing parameters based on capability information, reducing the need for manual configuration and improving transmission efficiency autonomously.
Data Source
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AI summary
Systems, apparatuses, and methods are described for wireless communications. A base station and wireless device may communicate capability information associated with a wireless device. The capability information may include information indicating support for an Ethernet type packet data unit session or header parameter compression. An Ethernet type packet data unit session may be instantiated based on the capability information.