Sidelink Slot Indication via Segmented Bit Configuration
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Solution Overview
Problem
In wireless communication networks, out-of-coverage user equipment (UEs) cannot perform sidelink communications, such as V2X, due to the lack of frame structure information and sidelink resource pool location, which are typically provided by the network.
Innovation Solution
The proposed method involves configuring and pre-configuring TDD UL-DL configuration information to align it between in-coverage and out-of-coverage UEs, allowing out-of-coverage UEs to determine potential sidelink slots using indication bits N1 and N2, which represent different portions of the sidelink slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frame structure information and sidelink resource pool location are provided by the network, then in-coverage UEs can perform sidelink communications, but out-of-coverage UEs cannot participate due to lack of this information
Solution Approach 1:
The TDD UL-DL configuration information is segmented into multiple indication bits (N1, N2, etc.) that can be separately transmitted and combined. This segmentation allows the configuration information to be flexibly distributed across different signaling messages, enabling out-of-coverage UEs to reconstruct the complete frame structure information through pre-configuration and combination of these bits.
Solution Approach 2:
The system performs preliminary configuration by pre-configuring TDD UL-DL configuration information and indication bit mappings before actual sidelink communication occurs. This preliminary action enables out-of-coverage UEs to have the necessary frame structure information available in advance, allowing them to participate in sidelink communications without real-time network coverage.
2Measurement precision
If indication bits are used to represent sidelink slots, then the number of bits required increases, but the precision of slot indication improves
Solution Approach 1:
The slot indication is segmented into multiple indication bits (N1 for first portion, N2 for second portion) that represent different aspects of the sidelink slot configuration. This segmentation allows precise slot identification while distributing the complexity across multiple smaller, manageable bit fields rather than requiring a single large complex structure.
Solution Approach 2:
Different indication bits serve different local functions: N1 indicates the first portion of slots while N2 indicates the second portion. This local quality assignment allows each bit field to be optimized for its specific purpose, improving overall indication precision while keeping individual bit field complexities manageable.
Data Source
AI summary
A system and method for indicating potential sidelink slots are disclosed herein. In some embodiments, a method performed by a first wireless communication device includes determining, by the first wireless communication device, a first number of bits N1 to indicate a first portion of a plurality of potential sidelink slots and/or a second number of bits N2 to indicate a second portion of a plurality of potential sidelink slots and providing, by the first wireless communication device to a second wireless communication device in the sidelink communication, the plurality of potential sidelink slots according to an arrangement of the first number of bits N1 and the second number of bits N2.