soft handoff


Also found in: Dictionary, Acronyms.

soft handoff

In CDMA cellular phone systems, a smooth transition from one cell to another. Unlike analog FDMA and digital TDMA systems, which use different frequencies in adjacent cells, CDMA uses the same frequencies but codes each conversation differently. As you move between cells, a CDMA phone picks up the same coded signal on the same frequency from both cells. When the original cell stops transmitting, the phone is already receiving the signal from the new cell causing a smooth transition with less chance of a dropped signal. See CDMA.
References in periodicals archive ?
The Evaluation of Soft Handoff Performance Between IS-95A and IS-95B/ cdma 2000," Proc.
When soft handoff is activated, this RTD can be combined with the relative delays reported in the PSMM as an aid to acquisition at the new BTS.
misleadingly alleged only that Ericsson had agreed to "surrender" its soft handoff patents.
The software integrates a flexible RF propagation model and analyzes key CDMA performance characteristics, such as soft handoff regions, forward- and reverse-link coverage, required channel resources and automatic cell size adjustment.
Passengers in AT&T's CDMA car were able to experience first-hand the soft handoff between cell sites -- no clicks or interference as the car moved from one cell site to the next.
EdgePoint PRO has an unrivaled clustering feature that assures soft handoffs of calls between multiple units and the macro network.
As demand for more advanced forms of mobility is fueled by the introduction of PDAs and smartphones, certified products will include support for soft handoffs, mobile VoIP, and real-time applications.
A CDMA2000 voice call was also completed with soft handoffs.
Soft handoffs help secure the connection of a caller's signal to a new cell before disconnecting the caller from the old cell they are about to leave.