5G Base Station Interference Management via Beam Index Allocation
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Solution Overview
Problem
In 5G communication systems, managing interference, particularly UE-to-UE interference, is challenging due to dynamic TDD operations and phase noise issues, which affect data transmission efficiency and latency.
Innovation Solution
A method and apparatus for managing interference by identifying interference region information, allocating resources based on beam index and resource allocation information, and employing a procedure for uplink beam management and phase noise estimation and compensation, enabling real-time scheduling and low latency communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic TDD operations are implemented to increase data transmission efficiency, then productivity is improved, but UE-to-UE interference increases due to direction mismatches between neighboring terminals
Solution Approach 1:
The patent applies preliminary action by pre-configuring interference region information and beam index information before data transmission. The base station identifies potential interference regions in advance and prepares corresponding beamforming configurations, allowing terminals to transmit and receive data in pre-determined non-interfering directions, thus preventing UE-to-UE interference while maintaining dynamic TDD operations
Solution Approach 2:
The patent implements local quality by creating specific interference region information for different spatial locations and beam directions. Each terminal is assigned specific beam indices that correspond to particular directional qualities, ensuring that terminals in different locations use appropriate beamforming characteristics to avoid interfering with each other while maximizing local data transmission efficiency
2Loss of time
If real-time scheduling is implemented to reduce latency, then loss of time is reduced, but device complexity increases due to coordination requirements between base stations
Solution Approach 1:
The patent reduces real-time coordination complexity by pre-configuring interference region information and resource allocation information between base stations. This preliminary exchange of information allows base stations to independently make scheduling decisions without requiring complex real-time coordination, thereby reducing latency while keeping device complexity manageable
Solution Approach 2:
The patent segments the interference management function into separate information elements: interference region information, beam index information, and resource allocation information. This segmentation allows base stations to process and coordinate specific aspects independently rather than managing all coordination aspects simultaneously, reducing overall system complexity while enabling real-time scheduling
3Reliability
If phase error estimation in symbol unit is used to mitigate phase noise, then reliability is improved, but performance degradation due to inter-carrier interference cannot be prevented in very high frequency systems
Solution Approach 1:
The patent segments phase noise compensation into two distinct stages: common phase error (CPE) compensation using reference signals, and subsequent phase error estimation in symbol unit. This segmentation allows the system to address different types of phase errors separately, improving overall reliability while enabling additional measures to mitigate inter-carrier interference in very high frequency systems
4Loss of energy
If beamforming is used to increase transmission distance, then loss of energy is reduced, but device complexity increases due to beam pair determination requirements
Solution Approach 1:
The patent applies preliminary action by pre-determining and configuring beam index information that identifies the best beam pairs for communication. This preliminary beam pair determination is performed using channel state information and interference region data, allowing the system to select optimal beam pairs in advance without requiring complex real-time beam searching, thus reducing energy loss while managing device complexity
Solution Approach 2:
The patent makes the beam index information serve multiple functions: it identifies the best beam pairs for transmission, defines interference regions, and guides resource allocation. This multi-functionality reduces the need for separate beam management procedures, thereby reducing energy loss while keeping device complexity manageable through a unified beam indexing approach
Data Source
AI summary
The present disclosure relates to a communication technique of fusing a 5G communication system for supporting higher data transmission rate beyond a 4G system with an IoT technology and a system thereof. The present disclosure may be used for an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service, or the like) based on the 5G communication technology and the IoT related technology.A method of a first base station in a wireless communication system and the first base station are provided. The method includes identifying interference region information; receiving beam index information and resource allocating information from a second base station; and allocating a resource to a terminal based on the interference region information, the beam index information, and the resource allocation information. The first base station includes a transceiver; and a controller configured to identify interference region information, receive beam index information and resource allocation information from a second base station, and allocate a resource to a terminal based on the interference region information, the beam index information, and the resource allocation information.