CCCH Uplink Message Forwarding Without Layer-2 Destination ID
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Solution Overview
Problem
The existing sidelink (SL) communication technologies in wireless networks incur unnecessary system complexity due to the addition of an adaptation layer with a destination layer-2 identifier (ID) for both uplink (UL) and downlink (DL) messages on the common control channel (CCCH), leading to additional coding and decoding processes.
Innovation Solution
The proposed solution involves forwarding UL messages on the CCCH without a destination layer-2 ID, allowing the network device to skip the adaptation layer processing, thereby reducing system complexity by omitting the need for additional encoding and decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an adaptation layer with destination layer-2 ID is added to UL messages on CCCH, then the network device can identify the remote terminal, but the system complexity increases due to additional coding and decoding
Solution Approach 1:
The patent extracts the destination layer-2 ID from the adaptation layer for UL messages, keeping only the essential identification function while removing the complex adaptation layer structure. This allows the network device to identify remote terminals without the overhead of full adaptation layer processing.
Solution Approach 2:
The patent applies partial action by selectively adding the adaptation layer with destination layer-2 ID only to DL messages, while omitting it from UL messages where the network device can identify the remote terminal through other means. This reduces unnecessary coding and decoding operations.
2Ease of operation
If an adaptation layer is added to both UL and DL messages on CCCH, then message routing is simplified, but unnecessary coding and decoding increase system complexity
Solution Approach 1:
The patent applies different quality levels to different message types: DL messages receive full adaptation layer processing with destination layer-2 ID for simplified routing, while UL messages use a simplified format without the adaptation layer, as the network device can identify source terminals through alternative mechanisms.
3Stability of the object's composition
If the adaptation layer is processed for all CCCH messages, then consistent message handling is achieved, but processing time and complexity increase
Solution Approach 1:
The patent applies partial processing by skipping the adaptation layer for UL messages on CCCH, as the network device can identify the remote terminal through other fields in the message. This reduces processing time while maintaining sufficient message handling capability.
Data Source
AI summary
A method for message transmission, a method for message reception, a terminal, and a network device are provided. The method includes forwarding an uplink (UL) message carried on a common control channel (CCCH) to a network device. The UL message does not include a destination layer-2 identifier (ID), and the destination layer-2 ID indicates identity of a remote terminal.