Coordinated Multi-Point Gateway for Synchronized Base Station Transmission
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Solution Overview
Problem
Existing radio communication systems face challenges in coordinating simultaneous data transmission from multiple base stations in CoMP (Coordinated multi-point) scenarios, particularly in Inter-eNB CoMP, where achieving synchronized data delivery with minimal delay difference and reduced core network specification changes is difficult.
Innovation Solution
A radio communication system that includes first and second base stations, a first gateway, a second gateway, and a control means for signaling communication path configurations, allowing the second gateway to replicate and transmit packet data to both base stations, thereby establishing synchronized communication paths with reduced delay and minimal impact on core network specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted through the core network to multiple base stations, then simultaneous transmission can be achieved, but delay difference increases and core network specification changes are required
Solution Approach 1:
A CoMP gateway is introduced as an intermediary component between the core network and base stations. This gateway replicates downlink data and distributes it to multiple base stations simultaneously, enabling synchronized transmission without requiring extensive core network modifications. The gateway acts as a mediator that handles the complexity of multi-point data distribution.
Solution Approach 2:
The transmission path is segmented into separate components: the core network, the CoMP gateway, and individual base stations. By segmenting the data transmission function and placing it in a dedicated gateway, the system achieves flexible multi-point transmission without forcing changes throughout the entire core network architecture.
2Ease of manufacture
If existing network architecture is used for CoMP, then deployment is simpler, but core network specification changes are required and delay difference increases
Solution Approach 1:
The CoMP gateway serves as a dedicated intermediary that handles CoMP-specific functions. This allows the core network to maintain its existing simplified architecture while the gateway handles the complexity of multi-point data distribution and synchronization.
Solution Approach 2:
Instead of modifying the core network to support multiple transmission paths, the system copies the downlink data at the gateway level and distributes identical copies to multiple base stations. This copying approach avoids complex core network changes while achieving simultaneous transmission.
3Loss of time
If data is replicated at gateway level, then delay difference is reduced, but gateway complexity increases
Solution Approach 1:
The gateway performs data replication by copying the downlink data stream and distributing identical copies to multiple base stations. This copying mechanism is a straightforward operation that can be implemented efficiently, reducing delay without proportionally increasing complexity.
Solution Approach 2:
The CoMP gateway is designed with multi-functionality, handling data replication, distribution, and synchronization tasks. By consolidating these functions in a single universal component, the system manages complexity centrally while achieving reduced delay at the distribution point.
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A first GW function block (6) transmits packet data to a first base station (1). A second GW function block (7) is able to communicate with the first base station (1), a second base station (2), and the first GW function block (6). A control function block (5) signals information related to a communication path configuration to transfer the packet data. Setup of a communication path ,to transmit the packet data to the base station (1) from the GW function block (6) through the GW function block (7), is performed based on first packet data communication information signaled by the control function block (5). Setup of a communication path, to transmit the packet data to the base station (2) from the GW function block (7), is performed based on at least one of the first packet data communication information, second packet data communication information signaled by the control function block (5) to the base station (1), and third packet data communication information signaled by the control function block (5) to the GW function block (7).