Sidelink CSI MAC CE Scheduling With Latency-Bound Discard Decisions

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Solution Overview

Problem

There is no clear solution in existing technologies for considering the latency bound of Channel State Information (CSI) MAC Control Elements (CEs) during sidelink interface scheduling, leading to potential unnecessary transmissions.

Innovation Solution

An information processing method that selects a sidelink destination ID based on CSI MAC CEs, prioritizes transmissions, and performs packet discard decisions to ensure all CSI MAC CEs meet their latency bounds, thereby avoiding unnecessary transmissions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If CSI MAC CEs are transmitted without considering latency bounds, then transmission completeness is improved, but unnecessary transmissions occur wasting resources

Engineering Contradiction:

Improvetransmission completenessVSAvoidunnecessary transmissions

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies preliminary action by checking whether the current time exceeds the latency bound before transmitting CSI MAC CEs. The network device determines the latency bound for each CSI MAC CE and compares it with the current time to decide whether to transmit or discard the data, preventing unnecessary transmissions in advance

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent changes the transmission parameter by introducing a latency bound parameter that dynamically controls whether CSI MAC CEs should be transmitted. The network device adjusts transmission decisions based on whether the current time meets the latency bound requirement, optimizing resource usage

Inventive Principle:

Principle #35Parameter changes

2Productivity

If latency bound checking is implemented for all CSI MAC CEs, then transmission efficiency is improved, but system complexity increases

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidscheduling complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent extracts the latency bound checking function as a separate, independent step in the scheduling process. The network device first determines latency bounds for CSI MAC CEs, then checks current time against these bounds before transmission decisions, simplifying the overall scheduling logic by isolating the time-checking mechanism

Inventive Principle:

Principle #2Taking out (Extraction)

3Loss of energy

If CSI MAC CEs are discarded when exceeding latency bound, then resource waste is reduced, but information loss occurs

Engineering Contradiction:

Improveresource wasteVSAvoidCSI data loss

Core Design Contradiction:

Loss of energyVSLoss of information

Solution Approach 1:

The patent converts the potential harm of discarding CSI MAC CEs into a benefit by establishing clear latency bound criteria. Instead of arbitrarily discarding data, the system deliberately discards only those CSI MAC CEs that have exceeded their latency bounds, ensuring that resource waste is prevented while maintaining transmission of timely and valuable information

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS12408069B2Information processing method, device and apparatus, and computer-readable storage medium

Publication Date: 2025.09.02 DATANG MOBILE COMM EQUIP CO LTD

AI summary

An information processing method, device and apparatus, and a computer-readable storage medium are provided. The method includes: for a new data transmission resource of a sidelink interface, selecting a sidelink destination ID according to a CSI MAC CE of the sidelink interface; or, for the new data transmission resource of the sidelink interface, in case that a transport block (TB) transmitted at the new data transmission resource includes a CSI MAC CE, performing a packet discard decision according to the included CSI MAC CE.