Base Station Reference Signal Timing for Crosslink Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in effectively managing inter-base-station interference due to limitations in existing reference signal transmission and reception timing, which affect network performance and lead to increased latency, dropped calls, and interrupted communications.
Innovation Solution
A method and apparatus for a base station to receive a reference signal from another base station, where the reference signal's transmission time is adjusted based on the scheduled downlink transmission period of the other base station, allowing for improved crosslink interference measurement and mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reference signal transmission timing is based on scheduled downlink transmission periods, then the reference signal can be transmitted during dedicated downlink slots, but the reception timing may not align with the base station's uplink reception period causing measurement failures
Solution Approach 1:
The patent applies preliminary action by having the first base station transmit the reference signal in advance during its downlink transmission period, allowing the second base station to receive and measure the signal during its uplink reception period. This advance transmission ensures the reference signal is available for measurement without requiring real-time coordination, resolving the timing alignment issue while maintaining reliable reference signal reception.
2Measurement precision
If the base station adjusts its uplink reception period to receive the reference signal, then accurate interference measurement becomes possible, but the scheduled uplink reception period for user equipment may be disrupted
Solution Approach 1:
The patent applies segmentation by dividing the time resources into distinct periods: a first time resource for the first base station to transmit the reference signal during its downlink period, and a second time resource for the second base station to receive and measure the signal during its uplink reception period. This segmentation allows interference measurement without disrupting scheduled uplink reception for user equipment, maintaining both measurement precision and productivity.
3Adaptability or versatility
If reference signal transmission and reception timing is not coordinated between base stations, then each base station can operate independently, but inter-base-station interference increases and network performance deteriorates
Solution Approach 1:
The patent applies feedback by having the second base station measure the reference signal transmitted by the first base station and report the measurement results back to the network. This feedback mechanism allows the network to understand the interference conditions and coordinate timing between base stations, reducing inter-base-station interference while maintaining operational independence through standardized measurement and reporting procedures.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may receive, in a first time resource and from another base station, a reference signal associated with a second time resource, wherein the second time resource is based at least in part on a scheduled downlink transmission period associated with the other base station, and wherein the first time resource is based at least in part on an adjustment of a scheduled uplink reception period associated with the base station such that the reference signal associated with the second time resource is received by the base station within the first time resource. The base station may perform a crosslink interference (CLI) measurement using the reference signal. Numerous other aspects are described.