SIP Options Status Messaging Without Presence Server
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Solution Overview
Problem
The existing Rich Communication Suite (RCS) service relies on a presence server for status messaging, which may not be operational in all cases, limiting the ability to provide status messaging services between RCS service subscribers.
Innovation Solution
A method is introduced where an electronic device acquires a status message and adds it to a SIP Options message, transmitting it to counterparts in the address book, regardless of the presence server's operation, using the Session Initiation Protocol (SIP) to ensure status message exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RCS service uses a presence server for status messaging, then the status messaging service can be provided through standardized presence service, but the service cannot be provided when the presence server is not operational
Solution Approach 1:
The patent introduces SIP Options message as an intermediary mechanism to transfer status messages between RCS service subscribers. Instead of directly relying on the presence server, the status message is embedded in SIP Options messages that can be transmitted through alternative paths, thus mediating the communication between subscribers even when the presence server is unavailable.
Solution Approach 2:
The patent extracts the status messaging function from the presence server dependency. By embedding status messages within SIP Options messages, the essential status exchange capability is separated from the presence server infrastructure, allowing status messaging to function independently of the presence server's operational status.
2Adaptability or versatility
If the presence service is defined as an option function in RCS communication protocol, then communication carriers have flexibility in implementation, but carriers may not provide the presence service
Solution Approach 1:
The patent makes the SIP Options message mechanism universal by designing it to work regardless of whether a presence server is deployed. The same SIP Options message structure can carry status messages in both presence server environments and non-presence server environments, making the solution applicable to all carrier implementations of RCS.
3Ease of manufacture
If status message is transmitted through presence server, then standardized presence service protocol can be used, but additional presence server infrastructure is required
Solution Approach 1:
The patent extracts the status message transmission function from the presence server infrastructure. By using SIP Options messages that can be sent directly between devices or through existing SIP infrastructure, the solution removes the mandatory requirement for dedicated presence server infrastructure while maintaining standardized protocol compliance.
Data Source
AI summary
An electronic device provides a status messaging service. The electronic device includes a communication module, a display module, and a processor that is configured to acquire a status message of the electronic device, and during a service discovery operation, add the acquired status message to a session initiation protocol (SIP) Options message and transmitting the SIP Options message. A method includes acquiring a status message of the electronic device, and adding the acquired status message to a session initiation protocol (SIP) Options message and transmitting out the SIP Options message during a service discovery operation.