Mobile Station ID Switching in Wireless Systems
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Solution Overview
Problem
In wireless communication systems, errors during the switching of Temporary Station IDentifier (TSTID) to Station IDentifier (STID) can lead to incorrect identification of mobile stations by base stations, disrupting communication.
Innovation Solution
A method and system for managing the switching of identification information from TSTID to STID, where the base station maintains both IDs until successful switching is confirmed, using messages like RNG-RSP, REG-RSP, and HARQ packets to ensure accurate identification and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station switches from TSTID to STID after registration procedure, then the mobile station identifier is updated to a permanent identifier, but communication interruptions occur when errors happen during the switching process
Solution Approach 1:
The base station performs preliminary actions by maintaining the TSTID in active state until the switching to STID is successfully completed and confirmed. This preliminary maintenance of the old identifier prevents communication interruptions by ensuring a fallback identifier is available during the transition process.
Solution Approach 2:
The system implements feedback mechanisms where the base station confirms successful switching only after verifying that the mobile station has successfully received and is using the new STID. This feedback loop ensures that the TSTID is not deleted prematurely, preventing identification errors.
2Quantity of substance
If the base station deletes TSTID after sending REG-RSP message, then memory resources are freed, but identification mismatches occur between base station and mobile station
Solution Approach 1:
The base station performs preliminary maintenance of the TSTID storage until confirmation of successful switching is received. This preliminary action ensures that the identifier is available for reference during the transition period, preventing identification mismatches between the base station and mobile station.
Solution Approach 2:
The deletion of TSTID is conditioned on receiving feedback confirmation that the switching was successful. The base station waits for verification that the mobile station has successfully adopted the STID before deleting the TSTID, ensuring identification consistency throughout the process.
3Ease of operation
If the base station uses TSTID for communication before registration, then temporary identification is provided, but communication interruptions occur when switching to STID fails
Solution Approach 1:
The base station maintains the TSTID in an active state as a preliminary measure before completing the switching process. This preliminary maintenance ensures that if switching to STID fails or encounters errors, the system can continue using the TSTID without interruption, maintaining communication continuity.
Solution Approach 2:
The system prepares a cushioning mechanism by keeping the TSTID available during the switching process. This beforehand cushioning provides a safety net that prevents communication interruptions by ensuring an alternative identifier is ready if the switching to STID fails.
Data Source
AI summary
A system and a method for switching mobile station identification information in a wireless communication system are provided. The method includes sending, at a base station, a RNG-ReSPonse (RSP) message including a temporary mobile station identifier to the mobile station, determining, at the mobile station, the temporary mobile station identifier in the RNG-RSP signal, when base station receives REGistration (REG)-REQ message including the temporary mobile station identifier from the mobile station, sending, at the base station, a REG-RSP message to the mobile station, determining, at the mobile station, the mobile station identifier in the REG-RSP message and sending a response signal for the REG-RSP message to the base station, when receiving the response signal for the REG-RSP message, deleting, at the base station, the temporary mobile station identifier of the mobile station, and communicating, at the mobile station and the base station, using the mobile station identifier.