SCP Routing Path Generation for 5G Inter-Domain Latency
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Solution Overview
Problem
In 5G communication networks, the inefficiency of requiring intermediate Service Communication Proxy (SCP) nodes to perform routing logic for inter-domain routing leads to processing delays, network latency, and lower throughput.
Innovation Solution
The method involves generating and adding routing path information to requests, using SCP domain routing information obtained from the Network Function Repository Function (NRF), to enable efficient inter-domain routing without the need for intermediate SCPs to perform extensive routing logic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If intermediate SCP nodes perform routing logic for inter-domain routing, then routing decisions can be made locally, but processing delays and network latency increase
Solution Approach 1:
The patent applies preliminary action by pre-computing and embedding the complete routing path (sequence of domains) in the request message at the source SCP before forwarding to intermediate SCPs. This eliminates the need for intermediate SCPs to perform complex routing logic, reducing processing delays and network latency while maintaining routing efficiency.
2Productivity
If routing path information is added to requests, then intermediate SCPs can route more efficiently, but request message complexity increases
Solution Approach 1:
The patent uses an intermediary approach by introducing a structured routing path information element that acts as a mediator between the source SCP and intermediate SCPs. This element carries the complete sequence of domains, enabling efficient routing decisions without significantly complicating the overall request message structure, thus improving productivity while managing complexity.
3Ease of operation
If SCPs perform extensive routing logic, then routing decisions can be made autonomously, but processing overhead increases
Solution Approach 1:
The source SCP performs the routing logic preparation in advance by determining the complete sequence of domains and embedding it in the request message. This preliminary action enables intermediate SCPs to simply follow the pre-determined path without performing extensive autonomous routing logic, thereby reducing processing overhead while maintaining operational autonomy.
4Speed
If routing path information is pre-added to requests, then network latency is reduced, but initial processing at source SCP increases
Solution Approach 1:
The source SCP performs preliminary routing path computation and embeds the sequence of domains in the request message before forwarding. This shifts processing effort to the source SCP, enabling intermediate SCPs to route quickly without extensive logic, thus reducing overall network latency and improving routing speed despite increased initial processing at the source.
Data Source
AI summary
Methods, systems, and computer readable media for service communication proxy (SCP) routing are disclosed. One example method for SCP routing comprises: at a first SCP associated with a first domain, the first SCP including at least one processor: receiving a first request destined for a network function; determining that the first request lacks routing path information for the first request; generating, using SCP domain routing information obtained from a network function repository function (NRF), a sequence of domains usable for routing the first request to the network function; adding, to the first request, the routing path information indicating the sequence of domains; determining, using the routing path information or the sequence of domains, a second SCP for routing the first request; and sending the first request comprising the routing path information to the second SCP.