Full Duplex Resource Allocation for Interference Measurement
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Solution Overview
Problem
In full duplex wireless communication systems, the traditional one-to-one correspondence between channel measurement and interference measurement resources leads to inefficient use of radio resources, particularly when base stations interact through a radio interface, causing interference with V2X communications and reducing measurement accuracy.
Innovation Solution
A method where base stations use a one-to-many relation between reference signals for interference and channel measurements, allowing multiple interference measurements to be performed using a single set of channel measurement resources, and configuring independent power parameters for reference signals to adapt to different interference scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional one-to-one correspondence between channel measurement and interference measurement resources is used, then measurement accuracy is maintained, but radio resource efficiency deteriorates
Solution Approach 1:
The patent applies universality by enabling a single channel measurement resource to serve multiple interference measurement purposes. Specifically, the same channel measurement resource is reused across different time-frequency resources and for multiple interference scenarios, allowing one resource to fulfill multiple measurement functions simultaneously, thereby improving radio resource efficiency while maintaining measurement accuracy through appropriate resource indication mechanisms
2Speed
If base stations interact through radio interface in full duplex system, then interaction timeliness is improved, but interference with V2X communications increases
Solution Approach 1:
The patent applies local quality by configuring different power parameters for reference signals in different time-frequency resources based on local interference conditions. The base station identifies specific time-frequency resources where base station interaction causes interference to V2X communications and applies targeted power adjustments or resource indications only in those local areas, rather than uniformly across all resources, thus reducing interference while maintaining interaction timeliness
3Measurement precision
If multiple CQIs are fed back for multiple interference assumptions, then measurement comprehensiveness is improved, but radio resource wastage increases
Solution Approach 1:
The patent applies partial action by having the terminal feed back only the necessary subset of CQI information rather than all possible CQIs for every interference scenario. The base station indicates specific time-frequency resources and interference assumptions that require measurement, allowing the terminal to perform partial measurements and feedback only those CQIs relevant to the current communication conditions, thereby reducing radio resource wastage while maintaining measurement comprehensiveness where needed
Data Source
AI summary
A node first receives a first information block, the first information block is used to determine a target time-frequency resource and a first time-frequency resource set, the first time-frequency resource set comprises K1 first-type time-frequency resources, the target time-frequency resource is associated with each of the K1 first-type time-frequency resources; then transmits a first measurement information set; an interference measurement performed on the target time-frequency resource is used to determine the first measurement information set; the first measurement information set comprises a first resource indication, and the first resource indication is used to determine a target first-type time-frequency resource in the K1 first-type time-frequency resources; a channel measurement performed on the target first-type time-frequency resource is used to determine the first measurement information set. The present application improves the channel and interference measurement method under full duplex, thereby optimizing the system performance.