Subject: [Seamoby] CARD: Timeout and retransmission of signaling messages

From: Marco Liebsch <[email-masked]>
Date: Fri, 10 Oct 2003 18:22:43 +0200

"...The timeout values in MN -AR resending and AR-AR resending make AR-AR
resending overlap: If a message is lost between AR and CAR, both MN and
AR will resend it at the same time. Based on the discussion about AR-AR
resending, I understood that its purpose was to decrease the amount
of over-the-air messages, if a message is lost in the fixed
network. Now this does not happen.
To fix this, change the values for resending, so that MN_AR_CARD_TIMEOUT >
AR_AR_CARD_TIMEOUT * MN_AR_CARD_RETRIES. This should IMO be done by
decreasing the AR_AR timeout and amount of retries to avoid problems
with MN noticing messages lost between MN and AR slowly." 

Shouln't the algorithm be MN_AR_CARD_TIMEOUT >
AR_AR_CARD_TIMEOUT * AR_AR_CARD_RETRIES...?

Proposal for costants:
MN_AR_CARD_TIMEOUT: keep 1 sec.
MN_AR_CARD_RETRIES: keep 5
AR_AR_CARD_TIMEOUT: 300 ms
AR_AR_CARD_RETRIES: 2

Any comments?

marco

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