Base Station Interface for Direct P2P Traffic Offloading
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Solution Overview
Problem
Conventional peer-to-peer communication in mobile communication systems relies on the core network for data transmission, leading to data transmission delays, overloading, and high costs due to inefficient traffic offloading.
Innovation Solution
Establishing a direct interface between base stations to facilitate peer-to-peer communication without passing through the core network, by obtaining and transmitting IP addresses and TEIDs for user equipment, enabling data transmission between user equipment via base station interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional P2P communication uses core network for data transmission, then network coverage and reliability are maintained, but data transmission delay increases and core network becomes overloaded
Solution Approach 1:
The network transmission path is segmented into two types: direct base station interface paths for local P2P traffic and core network paths for non-local traffic. This segmentation allows P2P data to bypass the core network when possible, reducing transmission delay while maintaining core network connectivity for other purposes.
Solution Approach 2:
The base station interface acts as an intermediary between user equipment and the core network. By introducing this direct interface, P2P traffic can be routed locally through base stations without traversing the core network, thus reducing delay while the core network remains available as a backup path.
2Extent of automation
If conventional P2P communication routes through core network, then centralized control is maintained, but core network loading increases and transmission cost increases
Solution Approach 1:
The network architecture transitions from uniform centralized routing to localized routing where base stations have autonomous capability to handle P2P traffic locally. Each base station can independently route P2P data through direct interfaces with other base stations, reducing core network loading while maintaining overall network control.
3Loss of time
If direct base station interface is established for P2P communication, then core network loading is reduced and transmission delay is decreased, but routing complexity between base stations increases
Solution Approach 1:
Routing information including IP addresses and TEIDs is pre-established and maintained at base stations before actual P2P communication occurs. This preliminary setup of routing tables and interface configurations enables rapid local routing decisions without complex real-time computations, reducing transmission delay while managing routing complexity.
Data Source
AI summary
A method for P2P communication, for a first base station of a mobile communication system, where a base station interface is established between the first base station and a second base station of the mobile communication system is disclosed. The method comprises obtaining an IP address of a first user equipment and a TEID corresponding to a radio bearer established between the first user equipment and the first base station, and transmitting first routing information to the second base station via the base station interface, wherein the first routing information includes the IP address of the first user equipment, the TEID corresponding to the radio bearer between the first user equipment and the first base station, and an IP address of the first base station, wherein the base station interface does not pass through a core network of the mobile communication system.