RACH Parameter Adaptation for Reliable Power-Saving Modes
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Solution Overview
Problem
Network power saving modes in wireless communication networks can cause RACH process failures due to changes in network parameters, leading to increased power consumption and network connection failures.
Innovation Solution
Adapting RACH process parameters based on the current network power mode by receiving and transmitting messages indicating the appropriate parameters and initiating the RACH process accordingly, thereby reducing failures and allowing network nodes to operate in power saving or compensation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If network power saving mode is enabled to reduce power consumption, then power consumption is reduced, but RACH process reliability deteriorates due to parameter changes
Solution Approach 1:
The patent implements dynamic adaptation of RACH parameters based on the current network power mode. The UE receives RACH parameter configurations for multiple power modes and dynamically selects the appropriate parameters according to the currently active power mode, enabling the system to maintain reliable RACH operation across different power consumption states
Solution Approach 2:
The patent changes RACH process parameters according to the network power mode. When the network transitions between power modes, the UE receives updated RACH parameter configurations and adjusts its RACH procedure accordingly, ensuring that parameter values are optimized for the current power mode while maintaining connection reliability
2Use of energy by moving object
If network power saving mode is enabled to reduce power consumption, then power consumption is reduced, but network connection reliability deteriorates
Solution Approach 1:
The system dynamically adapts RACH parameters based on the active power mode, ensuring that connection establishment and maintenance procedures are optimized for the current network state. This dynamic adjustment prevents connection failures that would occur with static parameters across varying power modes
Solution Approach 2:
The network provides feedback to the UE about the current power mode through RACH parameter configurations. The UE uses this feedback information to adjust its RACH behavior appropriately, creating a closed-loop system that maintains connection reliability despite power mode transitions
Data Source
AI summary
A method for wireless communication by a user equipment (UE) includes receiving, from a network node, a first message indicating, for each network power mode of a group of network power modes, a group of random-access channel (RACH) process parameters. The method also includes receiving, from the network node, a second message indicating a current network power mode, of the group of network power modes, enabled at the network node. The method further includes receiving, from the network node, a third message including a physical downlink control channel (PDCCH) order that initiates a RACH process in accordance with the respective group of RACH process parameters associated with the current network power mode. The method still further includes transmitting, to the network node based on receiving the PDCCH order, a RACH preamble associated with the RACH process.