Base Station Mapping Table for Relay Network Efficiency
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Solution Overview
Problem
Current network systems, such as IEEE 802.16j, lack efficient hardware modules, protocol stacks, and communication procedures for relay stations, particularly in LTE networks, leading to inflexible and inefficient communication processes.
Innovation Solution
A base station attaching method that establishes a communication link procedure between a relay station and a core network, creating a mapping table to facilitate the forwarding of network packets and control signals, enhancing communication efficiency by configuring processing units and transceivers to manage link requests, RRC, NAS, and IP connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay stations use prior protocols between user equipment and base station, then basic communication is possible, but communication efficiency and flexibility are insufficient
Solution Approach 1:
The base station acts as an intermediary between the relay station and core network, establishing a mapping table that mediates packet forwarding. This intermediary mechanism enables efficient communication by centralizing the mapping management at the base station, which translates between relay station identifiers and core network addresses, thereby improving communication efficiency without requiring complex protocol changes at the relay station level.
Solution Approach 2:
The invention introduces a mapping table with specific parameters (relay station identifier, core network address, packet forwarding address) that changes the communication paradigm from direct protocol-based routing to parameter-based address mapping. This parameter transformation approach allows flexible adaptation to different relay station configurations while maintaining efficient packet forwarding through structured data organization.
2Area of stationary object
If relay stations are deployed to extend coverage, then communication range increases, but system complexity increases
Solution Approach 1:
The base station serves as an intermediary that simplifies the system architecture by centralizing mapping table management. Instead of requiring each relay station to independently manage complex routing information, the base station maintains the mapping table and handles packet forwarding decisions, thereby reducing individual relay station complexity while enabling coverage extension through multiple relays.
Solution Approach 2:
The base station performs multiple functions including acting as a relay for relay stations, maintaining mapping tables, forwarding packets, and managing communication between relay stations and core network. This multi-functional approach consolidates complexity at a single node, allowing the system to extend coverage through multiple relays without proportionally increasing overall system complexity.
3Productivity
If mapping tables are created for relay station connections, then packet forwarding efficiency improves, but memory requirements increase
Solution Approach 1:
The mapping table stores only essential local information (relay station identifier, core network address, packet forwarding address) required for efficient packet forwarding, rather than complete routing tables. This localized information approach optimizes packet forwarding efficiency by storing only the critical mapping relationships needed at the base station, minimizing memory requirements while maintaining high forwarding performance.
Data Source
Figure 1A~1B
Figure 1C
Figure 1D~1E
AI summary
A base station and an attaching method thereof are provided. A relay network system comprises the base station, a relay station and a core network. The base station is connected with the core network via a backhaul link. The base station comprises a processing unit and a transceiver. The processing unit is configured to setup a communication link procedure between the relay station and the core network corresponding to a link request from the relay station, and to create a mapping table for connecting the relay station and the core network. The transceiver is configured to forward network packets and control signals between the relay station and the core network based on the mapping table.