Communication Control Apparatus for CSG-CoMP Integration
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Solution Overview
Problem
The integration of CSG cells with CoMP in wireless communication systems is challenging due to the lack of established procedures for cooperation between CSG cells and other base stations.
Innovation Solution
A communication control apparatus and method that differentiate operations for specific wireless terminals and other terminals by performing terminal grouping, enabling cooperative communication between communication control apparatuses based on whether they perform terminal grouping, thereby facilitating the combination of CSG cell operations and CoMP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CSG cells are introduced to provide access restrictions and improve local communication capacity, then communication quality for specific terminals is improved, but the ability to perform cooperative communication with other base stations deteriorates due to lack of established procedures
Solution Approach 1:
The base station dynamically adjusts its operation mode based on terminal grouping status. When terminal grouping is performed, the base station operates as a CSG cell with access restrictions; when terminal grouping is not performed, it operates as a non-CSG cell allowing cooperative communication. This dynamic adaptation resolves the contradiction by allowing the system to switch between modes depending on operational requirements.
Solution Approach 2:
The invention changes the operational parameters of the base station by introducing a terminal grouping determination mechanism. The base station determines whether to perform terminal grouping and accordingly adjusts its communication mode, access control policies, and cooperative communication participation. This parameter change enables the system to balance between providing restricted access for quality improvement and enabling cooperative communication for capacity enhancement.
2Productivity
If terminal grouping is performed to distinguish operations for specific wireless terminals, then communication capacity for targeted terminals is improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The invention segments the communication system into distinct operational modes based on terminal grouping. The base station is divided into different functional states: CSG mode with access restriction and non-CSG mode without restriction. This segmentation allows the system to apply different control mechanisms appropriately, improving communication capacity for specific terminals while managing complexity through clear mode separation.
Solution Approach 2:
The base station is designed with multi-functionality to perform both CSG and non-CSG operations. It universally handles terminal grouping determination, access control, and cooperative communication based on the determined mode. This universal design allows a single base station to adapt to different operational requirements without requiring separate dedicated systems, thereby improving productivity while controlling complexity.
3Productivity
If cooperative communication is implemented between multiple base stations, then overall communication capacity is improved, but difficulty in establishing coordination procedures increases when CSG cells are involved
Solution Approach 1:
The base station performs preliminary determination of whether to perform terminal grouping before engaging in cooperative communication. This preliminary action establishes the operational mode in advance, allowing other base stations to understand the coordination requirements beforehand. By determining the CSG/non-CSG status upfront, the system simplifies the establishment of coordination procedures, as other base stations can adjust their cooperative communication approach based on this pre-established information.
Solution Approach 2:
The invention implements a feedback mechanism where base stations exchange information about their terminal grouping status and operational modes. This feedback allows coordinating base stations to understand whether a CSG cell is involved and adjust their cooperative communication procedures accordingly. The feedback loop simplifies coordination by providing clear status information, reducing the difficulty of establishing appropriate coordination procedures for mixed CSG and non-CSG environments.
Data Source
AI summary
There is provided a communication control apparatus including a communication controller that controls cooperative communication linked to other communication control apparatuses depending on whether the communication control apparatus or the other communication control apparatuses perform terminal grouping to distinguish an operation to a specific wireless terminal and to other wireless terminals.