Pre-Configured Uplink Resources for Low-Latency Idle-Mode Data
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently managing energy consumption and latency, particularly in machine-to-machine (M2M) communication systems and NarrowBand-Internet of Things (NB-IoT) scenarios, where terminals consume significant power during radio resource control (RRC) connection establishment for small data transmissions.
Innovation Solution
Implementing pre-configured uplink resources (PUR) in RRC idle mode to facilitate dedicated transmission resources, including strategies for downlink data transmission, PUR PDCCH common search space configuration, PUR UE-specific PDCCH search space configuration, and coupling processing methods for paging and pre-configured dedicated resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals establish full RRC connection for small data transmissions, then reliable data transmission is achieved, but power consumption increases significantly
Solution Approach 1:
The patent segments the RRC connection establishment process by introducing a simplified RRC idle mode transmission mechanism. Instead of requiring full RRC connection establishment, the system divides transmission into idle mode (for small data) and connected mode (for large data), allowing terminals to transmit small data packets without completing the full connection procedure, thus reducing power consumption while maintaining reliability for appropriate data sizes
Solution Approach 2:
The patent implements pre-configured uplink resources (PUR) that are allocated in advance to terminals in RRC idle mode. This preliminary allocation of transmission resources eliminates the need for terminals to perform resource request and allocation procedures during each transmission, reducing the number of signaling exchanges and power consumption while ensuring reliable data delivery through pre-established resource guarantees
2Reliability
If terminals enter RRC connected state for data transmission, then transmission reliability is improved, but transmission latency increases
Solution Approach 1:
The system performs preliminary configuration of uplink transmission resources and terminal-specific PDCCH search spaces while terminals are in RRC idle mode. This advance preparation allows terminals to immediately transmit small data packets without undergoing the time-consuming RRC connection establishment process, significantly reducing latency while maintaining transmission reliability through pre-configured resource guarantees
Solution Approach 2:
The patent extracts the essential resource allocation and scheduling functions from the full RRC connection establishment process, creating a simplified idle mode transmission mechanism. By separating these critical functions from the complete connection procedure, the system achieves fast data transmission for small packets while reserving full connection establishment only when necessary for larger or more complex transmissions
3Productivity
If pre-configured uplink resources are allocated to all terminals, then transmission efficiency is improved, but network resource overhead increases
Solution Approach 1:
The patent applies local quality by allocating pre-configured uplink resources selectively based on terminal characteristics, data size requirements, and network conditions. Instead of uniform resource allocation to all terminals, the system configures PUR and search spaces only for terminals that meet specific criteria (e.g., small data transmissions, periodic reporting), optimizing resource efficiency while maintaining high transmission efficiency for targeted applications
4Use of energy by moving object
If simplified idle mode transmission is used, then power consumption is reduced, but connection reliability for large data decreases
Solution Approach 1:
The patent implements dynamic adaptability by enabling terminals to flexibly switch between idle mode simplified transmission and connected mode full transmission based on real-time conditions. The system dynamically adjusts the transmission mode according to data size, network conditions, and service requirements, ensuring power efficiency for small data while maintaining connection reliability for large data transmissions through automatic mode selection
Data Source
AI summary
Methods, systems, and devices related to related to digital wireless communication, and more specifically, to techniques related to transmitting pre-configured dedicates resources for data transmission. In one exemplary aspect, a method for wireless communication includes transmitting a pre-configured transmission resource information indicating a time domain location to a core network node. The method also includes receiving transmission data from the core network node at the time domain location indicated in the pre-configured transmission resource information. In another exemplary aspect, a method for wireless communication includes connecting a communication node to a core network node. The method also includes receiving transmission data including a pre-configured transmission resource information at a time domain location from the core network node.