CS656 - Use concise and accurate sentences to describe the 8 steps in GSM standards to accomplish a handoff between base stations with a common MSC

Brian

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CS656 - Internet and High Layer Protocols


Question: Use concise and accurate sentences to describe the 8 steps in GSM standards to accomplish a handoff between base stations with a common MSC.​


1. Old BSS informs MSC of impending handoff, provides list of 1+ new BSSs

2. ________________________________________________

3. New BSS allocates radio channel for use by mobile

4. ________________________________________________

5. Old BSS tells mobile: perform handoff to new BSS

6. ________________________________________________

7. Mobile signals via new BSS to MSC: handoff complete. MSC reroutes call

8. ________________________________________________


Answer:


1) Old BSS informs MSC of impending handoff, provides list of 1+ new BSSs

2) MSC sets up path (allocates resources) to new BSS

3) New BSS allocates radio channel for use by mobile

4) New BSS signals MSC, old BSS: ready

5) Old BSS tells mobile: perform handoff to new BSS

6) Mobile, new BSS signal to activate new channel

7) Mobile signals via new BSS to MSC: handoff complete. MSC reroutes call

8) MSC-old-BSS resources released
 
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