Location Area Identity (LAI) and Global Cell Identity (GCI) in CDMA

Location Area Identity (LAI) 
PAGING message is broadcast within a local area, the size of which depends on traffic, paging bearer capability, signaling flow , etc.

Format:  MCC+MNC+LAC
MCC:  Mobile Country Code, 3 digits.
MNC:  Mobile Network Code, 2 digits.
LAC:  Location Area Code, a 2-byte-long hexadecimal BCD code. 0000 cannot be used with FFFE.
Global Cell Identity (GCI)
The unique ID of a cell in PLMN

Format:  LAI+CI
CI:  Cell Identity, a 2-byte-long hexadecimal BCD code, pre defined by the engineering department. The first 3 digits and the last digit represent the base station number and the sector number respectively. For an omni-directional site, the last digit of CI is 0.
For example, 4600301001230 shows base station number 123 contains an omni-directional site.

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Article Topics :

active, cdma, cell, cell global identity, cell global identity cdma, CHANNEL, forward, global cell id, handoff, lac lai, lai, location area identity format, neighbor, PAGING, pilot, reverse, search window, sim, sim location area identity