US 6,983,159 B2 | ||
Optimum allocation of TMSI and P-TMSI in mobile communication systems | ||
Gianluca Giovanni Di Pasquale, Milan (Italy); Vatche Varvarian, Aachen (Germany); and Arndt Ritterbecks, Sinnelveld (Netherlands) | ||
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (Sweden) | ||
Filed on Dec. 18, 2001, as Appl. No. 10/20,120. | ||
Claims priority of provisional application 60/270629, filed on Feb. 23, 2001. | ||
Prior Publication US 2002/0168977 A1, Nov. 14, 2002 | ||
Int. Cl. H04Q 7/20 (2006.01) |
U.S. Cl. 455—461 | 20 Claims |
1. A method of performing a special adjustment to a temporary mobile subscriber identity generation field value for use in
response to a restart operation, the method comprising:
determining a minimum integer amount that is higher than temporary mobile subscriber identity generation field values associated
with a predetermined percentage of all mobile subscriber, wherein determining the minimum integer amount comprises:
determining a probability density as a function of temporary mobile subscriber identity generation value;
integrating the probability density across an entire range of temporary mobile subscriber identity generation values to determine
a total integral; and
determining the minimum integer amount such that an integral of the probability density from zero to the minimum integer amount
yields a smaller integral that is the predetermined percentage of the total integral; and
adjusting the temporary mobile subscriber identity generation field value as a function of the minimum integer amount.
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