Network-Controlled Repeater On-Off Switching During Random Access
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Solution Overview
Problem
Traditional RF repeaters in 5G systems lack the ability to dynamically control their on-off states, leading to unnecessary power consumption and interference due to constant operation during non-data transmission periods, which affects network throughput.
Innovation Solution
Implementing a network-controlled repeater (NCR) with a mobile termination (NCR-MT) that performs random access and a forwarding unit (NCR-Fwd) that goes into an off state during specific transmission phases, controlled by indication information from the network device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the repeater operates constantly in an on state, then signal forwarding is continuous and reliable, but power consumption increases and interference is caused during non-data transmission periods
Solution Approach 1:
The repeater transitions from a static on-state to a dynamic state system with on-state and off-state, controlled by indication information from the network device. The forwarding unit dynamically switches states based on whether data transmission is occurring, resolving the contradiction between continuous reliability and energy consumption.
Solution Approach 2:
The operational parameter of the repeater (on/off state) is changed based on transmission conditions. The network device controls the repeater's state through indication information, allowing the repeater to adjust its power consumption level while maintaining signal forwarding reliability when needed.
2Reliability
If the repeater operates constantly in an on state, then signal forwarding is continuous, but interference to other devices increases and network throughput decreases
Solution Approach 1:
The repeater dynamically adjusts its operational state based on transmission conditions. By switching to off-state during non-data transmission periods, the repeater eliminates interference to other devices while maintaining forwarding continuity when data transmission is active, controlled by network device indication information.
Solution Approach 2:
The repeater operates in periodic on-off cycles synchronized with data transmission periods. The forwarding unit activates during data transmission intervals and deactivates during non-transmission intervals, reducing interference while maintaining necessary signal forwarding continuity.
3Reliability
If the forwarding unit is in on state during random access transmission, then signal forwarding is available, but random access performance deteriorates due to self-interference
Solution Approach 1:
The random access transmission function is extracted and isolated from the normal data forwarding path. The forwarding unit is specifically deactivated during random access preamble transmission to eliminate self-interference, while remaining available for normal data forwarding during other periods.
Solution Approach 2:
The system takes preliminary action by deactivating the forwarding unit before random access transmission occurs. The network device sends indication information to switch the forwarding unit to off-state in advance of random access preamble transmission, preventing self-interference before it can occur.
Data Source
AI summary
A repeater, includes: a mobile termination configured to perform random access; and a forwarding entity which is in an off state when the mobile termination of the repeater transmits a random access preamble.