Restricted Parameter Signaling for LTE Interference Management
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Solution Overview
Problem
In wireless communication systems, interference from neighboring base stations and user equipment degrades performance, particularly in LTE networks, due to the lack of efficient methods for managing system operating parameters and coordinating resource allocation.
Innovation Solution
A method and apparatus for determining and signaling a restricted set of system operating parameters from a serving base station to user equipment, which allows for interference management and more efficient signaling by restricting unused parameters and modes, thereby optimizing receiver performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full system parameter sets are signaled to UEs for interference coordination, then interference management capability is improved, but signaling overhead and complexity increase
Solution Approach 1:
The patent extracts and signals only the restricted set of system parameters that are actually used for transmission, rather than signaling all possible parameters. This selective extraction reduces signaling overhead while maintaining the essential information needed for interference coordination and receiver processing.
Solution Approach 2:
The patent segments the complete parameter space into two parts: a restricted set of parameters that are actually used and signaled, and the remaining parameters that are not used. This segmentation allows the system to communicate only the necessary subset of parameters, reducing overall signaling complexity.
2Object-affected harmful factors
If resource partitioning is implemented to protect against interfering base stations, then interference on reference signals is reduced, but coordination complexity between base stations increases
Solution Approach 1:
The patent implements preliminary resource partitioning and parameter restriction at the base station level before transmissions occur. By pre-determining which parameters will be used and signaling them in advance to UEs, the system establishes interference protection mechanisms beforehand, reducing the need for complex real-time coordination.
Data Source
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AI summary
Certain aspects of the present disclosure relate to methods and apparatus for transmission restriction and efficient signaling. A base station (BS) may determine information regarding a restricted set of system parameters used for transmission from at least one of the serving BS or one or more potentially interfering BSs and signal the information to a user equipment (UE). According to certain aspects, a UE may receive the signaling of information regarding the restricted set of system parameters used for transmission from at least one of the serving BS or the one or more potentially interfering BSs and use the information to cancel interference by transmissions from the one or more potentially interfering BSs or serving BS.