RRC Inactive Uplink Packet Delivery via Pre-configured Random Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for efficient packet delivery in the RRC Inactive state of 5G wireless communication networks to reduce signaling overhead, power consumption, and resource costs on both user equipment (UE) and the radio access network.
Innovation Solution
The implementation of a 2-step or 4-step random access procedure for RRC Inactive UE, where the base station pre-configures a random access configuration, allowing the UE to transmit uplink packets without transitioning to the RRC Connected state, thereby reducing network signaling overhead and conserving radio resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE transitions to RRC Connected state for packet transmission, then reliable data delivery is achieved, but signaling overhead and power consumption increase
Solution Approach 1:
The network pre-configures random access resources and parameters for the UE before it enters RRC Inactive state. This preliminary configuration enables the UE to perform random access and transmit packets efficiently while in Inactive state, avoiding the need to transition to Connected state for every packet transmission, thus reducing power consumption while maintaining reliable delivery
2Reliability
If the UE transitions to RRC Connected state for packet transmission, then complete network control is achieved, but network signaling overhead increases
Solution Approach 1:
The patent extracts the essential packet transmission functionality from the RRC Connected state and enables it to operate independently in RRC Inactive state through pre-configured random access resources. This separation allows packet transmission to occur without requiring full RRC connection establishment, thereby reducing signaling overhead while maintaining network control through the pre-configured parameters
3Use of energy by moving object
If the UE remains in RRC Inactive state for packet transmission, then power saving is achieved, but access latency may increase
Solution Approach 1:
The network performs preliminary configuration of random access resources, parameters, and paths before the UE enters RRC Inactive state. This pre-configuration includes setting up dedicated random access preambles, resource allocations, and network routing information, which enables the UE to quickly resume transmission without significant latency while remaining in the power-saving Inactive state
4Productivity
If pre-configured random access resources are allocated for RRC Inactive UE, then packet transmission efficiency is improved, but network resource cost increases
Solution Approach 1:
The patent applies local quality by allocating pre-configured random access resources specifically to UEs in RRC Inactive state that have packet transmission needs, rather than providing such resources to all UEs universally. This targeted allocation optimizes packet transmission efficiency for the specific subset of UEs requiring it, while minimizing overall network resource consumption by not wasting resources on UEs that don't need this capability
Data Source
AI summary
A method for wireless communication includes transmitting, by a User Equipment (UE) in a Radio Resource Control (RRC) Inactive (RRC_Inactive) state, at least one packet to a base station, and receiving, by the UE in the RRC_Inactive state, an acknowledgement or non-acknowledgement (ACK/NACK) message from the base station in response to the at least one packet transmitted by the UE.