Dynamic Point Selection via Base Station Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Coordinated Multipoint (CoMP) schemes in wireless networks face limitations due to the need for a fast, proprietary interface between remote radio heads (RRHs) and base stations, restricting interoperability between different vendor equipment and preventing effective interference mitigation and throughput enhancement for user equipment at the edge of base station coverage areas.
Innovation Solution
Implementing a dynamic point selection (DPS) CoMP scheme that allows base stations to coordinate the transmission of protocol data units (PDUs) via separate communication links, using backhaul channels to balance transmission load and mitigate interference between base stations, and utilizing standardized interfaces like the X2 communication channel to enable coordination across different base station vendors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fast proprietary interface is used between RRHs and base stations to enable CoMP, then coordination and interference mitigation are improved, but interoperability between different vendor equipment deteriorates and device complexity increases
Solution Approach 1:
The patent applies universality by using standardized backhaul channels (X2 interface) that can serve multiple purposes: carrying coordination information for CoMP, transmitting user data, and supporting general base station communication. This allows different vendor equipment to interoperate while maintaining CoMP functionality, resolving the contradiction between coordination effectiveness and interoperability.
Solution Approach 2:
The patent introduces an intermediary approach by using the existing backhaul network infrastructure as a mediator between base stations. Instead of requiring direct high-speed proprietary links, base stations communicate through the standardized backhaul channel with appropriate buffering and scheduling, enabling coordination while maintaining compatibility with standard network architecture.
2Speed
If a proprietary interface is implemented for CoMP coordination, then transmission speed and coordination responsiveness are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring buffers at base stations to store coordination information and user data before transmission is needed. This allows the system to compensate for the slower speed of standardized backhaul channels while maintaining effective coordination, resolving the contradiction between speed and complexity.
Solution Approach 2:
The patent introduces dynamic scheduling and adaptive buffer management that adjusts transmission parameters based on channel conditions and coordination requirements. This dynamic approach allows the system to optimize performance using standardized interfaces without requiring complex dedicated hardware, reducing device complexity while maintaining coordination effectiveness.
3Productivity
If base stations use independent transmission without coordination, then device complexity is reduced, but spectral efficiency and throughput performance deteriorate
Solution Approach 1:
The patent applies self-service by enabling base stations to autonomously perform coordination functions using standardized interfaces. Each base station independently manages its own buffering, scheduling, and transmission decisions based on information exchanged through the backhaul channel, achieving spectral efficiency improvements without requiring complex centralized control or proprietary coordination mechanisms.
Data Source
AI summary
Examples are disclosed for coordinating transmission of one or more protocol data units to a wireless device from a coordinating set of base stations. In some examples, coordinating may include exchanging information via a backhaul communication channel coupling or interconnecting the base stations included in the coordinating set of base stations. For these examples, one or more protocol data units may be transmitted to the wireless device from the coordinating set of base stations via a plurality of separate communication links based on the exchanged information. Other examples are described and claimed.