SEAL VAL Media Session Management via SDP Resource Evaluation
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Solution Overview
Problem
Existing wireless communication systems lack efficient methods for managing network resources to support vertical applications, such as healthcare and automotive, which require rapid deployment and specific service enablers.
Innovation Solution
A VAL server with a media session management module that sends SDP information in an SIP payload to a NRM server for network resource requests, enabling evaluations for granting or denying media sessions based on bandwidth and bitrate requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a media session is established without network resource evaluation, then the media session can be quickly set up, but network resources may be insufficient leading to service failure
Solution Approach 1:
The patent performs network resource evaluation before establishing the media session. The VAL server sends a resource request to the NRM server containing SDP information, and receives an evaluation result before finalizing the session setup. This preliminary action ensures resources are available, preventing session establishment failure.
Solution Approach 2:
The NRM server acts as an intermediary between the VAL server and the network resources. It receives resource requests, evaluates network resource availability, and returns evaluation results to the VAL server. This mediator coordinates resource allocation and ensures reliable session establishment without requiring the VAL server to directly manage complex network resources.
2Productivity
If network resource evaluation is performed for every media session, then resource allocation is optimized, but the session establishment time increases
Solution Approach 1:
The patent extracts the network resource evaluation function into a separate NRM server, allowing the VAL server to focus on media session management. The resource request includes essential SDP information that is extracted from the full session setup process and sent to the NRM server for evaluation, streamlining the overall process.
3Loss of energy
If network resources are allocated without evaluation, then resource allocation is fast, but resources may be wasted when sessions cannot be properly supported
Solution Approach 1:
The NRM server provides feedback to the VAL server about network resource availability and suitability for the requested media session. Based on this feedback, the VAL server can decide whether to proceed with session establishment or terminate the request, preventing waste of network resources on sessions that cannot be properly supported.
Data Source
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AI summary
Aspects of the disclosure provide a method and a vertical application layer (VAL) server for a media session management in wireless communication. The method includes obtaining session description protocol (SDP) information within a session initiation protocol (SIP) payload associated with a media session and sending a network resource request comprising the SDP information, by a processing circuitry of a media session management module of the VAL server, to a network resource management (NRM) server. The NRM server can be a service enabler architecture layer (SEAL) server. The network resource request can request a network resource. The method further includes receiving, by the VAL server, an evaluation for the network resource request from the NRM server. The media session can be established or terminated based on the received evaluation in the media session management module of the VAL server.