IoT Uplink Scheduling Using Timing Parameters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, especially those handling IoT service sessions, uplink scheduling often occurs during data processing latency, leading to inefficient resource allocation and increased latency due to the use of random access channels, which can result in unused wireless resources and prolonged data transmission times.
Innovation Solution
A method where a user equipment (UE) transmits a timing parameter indicating the estimated availability of data to a base station, allowing the base station to temporarily suspend uplink scheduling and resume it only when the data is available, thereby optimizing resource allocation and reducing latency by using uplink grants instead of random access channel procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink scheduling is performed during data processing latency, then resource allocation continues without interruption, but wireless resources are wasted and latency increases due to random access channel procedures
Solution Approach 1:
The base station receives advance notification of data availability timing from the UE and performs preliminary suspension of uplink scheduling before the data is actually ready. This prevents wasted scheduling attempts and random access procedures, directly resolving the contradiction by acting in advance based on predicted data readiness timing.
Solution Approach 2:
The patent implements periodic resumption of uplink scheduling at intervals determined by the notified data availability timing. Instead of continuous scheduling that wastes resources, the system uses periodic scheduling that aligns with when data is actually available, improving resource efficiency while maintaining timely data transmission.
2Loss of energy
If uplink scheduling is suspended during data processing, then wireless resources are conserved, but scheduling must be precisely resumed to avoid latency
Solution Approach 1:
The UE provides feedback to the base station regarding data availability timing, enabling the base station to make informed scheduling decisions. This feedback mechanism allows precise resumption of uplink scheduling exactly when data is available, conserving wireless resources during processing while avoiding latency through accurate timing information.
Solution Approach 2:
The base station performs preliminary suspension of uplink scheduling based on advance notification of data readiness timing. By suspending scheduling in advance of actual data availability, the system conserves wireless resources without risking latency, as the suspension period is precisely calibrated to end when data is ready.
3Ease of operation
If random access channel procedures are used for uplink transmission, then transmission can occur without scheduled grants, but latency is prolonged and resource efficiency decreases
Solution Approach 1:
The base station performs preliminary suspension of uplink scheduling and prepares uplink grants in advance based on notified data availability timing. This ensures that when data becomes available, the UE can immediately use pre-prepared uplink grants for transmission, avoiding the need for random access procedures entirely and thus eliminating the associated latency while maintaining transmission flexibility.
Data Source
AI summary
An apparatus for wireless communication includes a receiver configured to receive a request for data associated with an Internet-of-things (IoT) service session with an IoT cloud server. The apparatus further includes a transmitter configured to transmit, based on receiving the request and prior to transmitting a response to the request, a message indicating a timing parameter associated with availability of the data. The receiver is further configured to receive an uplink grant at a time that is based on the timing parameter, and the transmitter is further configured to transmit the response to the request based on the uplink grant. The response includes at least a subset of the data.