Specifications

Sierra Wireless, Inc. CDPD Primer
2130006 Rev 1.0 Page vi
List of Figures
Figure 2-1: Forward and reverse channels ........................................................................................3
Figure 2-2: A cellular telephone system............................................................................................4
Figure 2-3: Cellular channel reuse using three sectors per cell .........................................................5
Figure 2-4: Cell handoff in three-sector cells....................................................................................6
Figure 3-1: Cellular radio channel usage within a single cell sector .................................................9
Figure 3-2: CDPD channel hopping..................................................................................................9
Figure 3-3: How cellular voice and CDPD coexist in a three-channel sector .................................10
Figure 4-1: ISO layered communications architecture....................................................................20
Figure 4-2: Example of a CDPD virtual terminal subprofile ..........................................................22
Figure 5-1: CDPD mobility management scenario 1 ......................................................................26
Figure 5-2: CDPD mobility management scenario 2 ......................................................................27