BKOFF and PROBE_BKOFF Definition: BKOFF is the access channel probe sequence backoff range. It equals one less than the maximum number of slots the mobile station is to delay due to the random backoff between successive access probe sequences and before the first access probe sequence of a response on the access channel. PROBE_BKOFF is the access channel probe backoff range. It equals one less than the maximum number of slots the mobile station is to delay due to the random backoff between successive access probes. USE YOUR BROWSER "BACK" BUTTON TO RETURN © 1999 DR. ERNEST SIMO - SPACE2000 BKOFF and PROBE_BKOFF Application: USE YOUR BROWSER "BACK" BUTTON TO RETURN © 1999 DR. ERNEST SIMO - SPACE2000 BKOFF and PROBE_BKOFF Example: Both BKOFF and PROBE_BKOFF are allocated 4 bits in the access parameters message. Before transmitting each access probe sequence, other than the first one, the mobile station generates a uniformly distributed random variable, called RS, in the range from zero to BKOFF+1. The mobile delays each access probe transmission by RS slots, where the slot time is an integer multiple of 20 msec. The value of the integer multiple depends on the maximum capsule size and the preamble size associated with a particular paging channel. Slots may well be several multiples of 20 msec in duration. PROBE_BKOFF is used similarly to BKOFF, but in this case the mobile gen-erates a uniformly distributed random variable, called RT, between zero and PROBE_BKOFF+1. It then waits RT slots after waiting TA seconds before transmitting the next access probe in an access probe sequence. USE YOUR BROWSER "BACK" BUTTON TO RETURN © 1999 DR. ERNEST SIMO - SPACE2000

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