Sidelink Control Information Transmission via Dedicated PSFCH and S-UCI Resources
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Solution Overview
Problem
In wireless communication networks, particularly in 5G technology, sidelink control messages face inefficiencies as they cannot be transmitted if no data is being sent over the physical sidelink shared channel, and allocating an entire slot for sidelink control information can be wasteful.
Innovation Solution
User equipment (UE) receives scheduling information for sidelink uplink and downlink control information resources, as well as physical sidelink feedback channel resources, and transmits control information using these resources efficiently, including the option to transmit in both resources or choose the earliest available resource to minimize latency and maximize utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sidelink control information is transmitted by appending to PSCCH or PSSCH, then control information can be sent, but the SCI may occupy the entire slot or cannot be transmitted when no data is sent
Solution Approach 1:
The patent segments the control information transmission into separate dedicated resources (PSFCH for feedback, S-UCI for uplink control) rather than appending to data channels. This allows independent scheduling and transmission of control information without being constrained by data channel availability or occupying entire slots.
Solution Approach 2:
The patent introduces dedicated intermediary channels (PSFCH and S-UCI resources) that mediate between the control information and the data transmission system. These intermediary resources provide a separate pathway for control information, eliminating the dependency between data transmission and control information delivery.
2Reliability
If an entire slot is allocated for transmitting SCI when no data is transmitted, then control information can be sent, but resource waste occurs
Solution Approach 1:
Instead of allocating the entire slot for control information transmission, the patent applies partial action by providing only the necessary dedicated resources (PSFCH and S-UCI resources) for control information. This partial allocation ensures reliable control transmission while avoiding the excessive resource consumption of full slot allocation.
3Adaptability or versatility
If SCI transmission is appended to PSSCH, then control information is sent with data, but control information cannot be transmitted when no data is sent
Solution Approach 1:
The patent creates universal transmission opportunities for control information by establishing dedicated resources (PSFCH and S-UCI) that can be used independently of data transmission. This multi-functionality allows control information to be transmitted whether or not data is sent, enhancing flexibility without sacrificing efficiency.
Data Source
AI summary
Aspects of the present disclosure include methods, apparatuses, and computer readable media for receiving first scheduling information indicating a sidelink uplink control information (S-UCI) resource, receiving second scheduling information indicating one or more physical sidelink feedback channel (PSFCH) resource, and transmitting control information via at least one of the S-UCI resource or the one or more PSFCH resources.