Network Access via Reserved Resources for IoT Latency
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in energy consumption and latency due to energy-inefficient and time-consuming network access procedures, particularly affecting Internet of Things (IoT) devices that require optimized energy operation.
Innovation Solution
A method that involves communicating a downlink control message indicating a reserved resource for data transmission, allowing for the release of a first data connection and establishing a second data connection based on predicted data transmission timing, thereby reducing collisions and enabling timely re-connection with reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional random access procedure is used for network access, then the terminal can establish a data connection, but the process requires significant time and energy consumption
Solution Approach 1:
The network pre-allocates reserved resources to the terminal before the actual data transmission occurs. This preliminary allocation includes assigning specific time-frequency resources and providing timing advance information, so that when the terminal needs to access the network, it can immediately use the pre-assigned resources without going through the complete random access procedure, thereby reducing latency while maintaining reliable connection establishment
2Reliability
If traditional random access procedure is used for network access, then the terminal can establish a data connection, but the process is energy-inefficient
Solution Approach 1:
The network provides reserved resources and timing advance information in advance through downlink control messages. The terminal can enter sleep mode during periods when no data transmission is needed, and only wake up to use the pre-allocated reserved resources when data needs to be transmitted. This eliminates the need for frequent energy-consuming random access procedures while ensuring reliable network access when needed
3Reliability
If reserved resources are allocated for network access, then collision between terminals is reduced, but resource scheduling complexity increases
Solution Approach 1:
Instead of implementing complex centralized resource scheduling for all terminals, the system assigns reserved resources locally to specific terminals based on their individual needs and characteristics. Each terminal receives dedicated timing advance information and reserved resource allocations tailored to its specific transmission requirements, simplifying the overall scheduling complexity while ensuring reliable access by eliminating collisions through localized resource dedication
Data Source
AI summary
A method includes, by using a first data connection (160) between a network (100) and a terminal (102), communicating, from a network node (112) of the network (100) to the terminal (102), a downlink control message (452) indicative of a timing (501) of a reserved resource (258) reserved for communication between the network (100) and the terminal (102). The reserved resource (258) is dimensioned based on a predicted size of a data transmission (401-403, 405-407) predicted by the network (100). The method also includes performing a connection release (453) of the first data connection (160). The method also includes, in accordance with the timing (501) and using the reserved resource (258), performing a network access (454) to establish a second data connection (160) between the terminal (102) and the network (100).