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(1) See Apple Handoff.

(2) To transfer from one function or system to another. For example, self-driving cars require a handoff from automatic to the human driver when a situation arises that it cannot figure out on its own.

(3) Switching a cellular phone call from one radio channel to another. Also called "handover," it mostly occurs when a mobile user travels into the range of an adjacent cell. However, when there is excessive interference on a radio channel, switching can occur within the same cell.

The handoff can be managed within the base station; the base station controller (BSC) that manages several base stations; or the mobile switching center (MSC) that sets up and tears down the calls. The switch typically takes place in about a quarter second so that the caller is unaware of it.
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The handover is the formal acceptance by the building owner that construction of the building is substantially complete and that it is ready for occupancy; that all systems have been installed correctly and are operational; and that a handover commissioning record has been completed and is available for the owner.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
In 2018/19, half (50.4 per cent) of handovers took place within 15 minutes, up from 43.5 per cent in 2017/18.
Overall, 3,384 ambulance arrivals at Leicestershire A&Es took more than an hour to handover in 2018/19.
At Wrexham Maelor, one in four handovers (27.6%) took between 30 minutes and an hour, the highest proportion in Wales.
And at the University Hospital of Wales (UHW) in Cardiff, Wales' largest hospital, just a third (31.5%) of handovers took less than 15 minutes.
All UEs in a train thus can be taken as a single UE who sends handover requests to eNodeB, which greatly reduces the signaling interaction load.
At present, the research on high-speed train handover focuses on the optimization of the inter-cells handover performance of high-speed trains, while the security needs are rarely considered.
In legacy wireless networks, a single metric such as Received Signal Strength (RSS) is utilized as a basis for handovers. Handovers among a variety of radio access technologies constitute vertical handovers and a number of decision algorithms exist for these types of handovers.
In RSS-based algorithms, RSS threshold and the user's velocity and location are utilized for handovers while in context-aware-based algorithms, the handover decision is hinged on signal quality, the network and the circumstance of the mobile device, where context can be take to be a situation of an entity or a location, environment, identity and time.
In such Heterogeneous Network, the mobility of the users from one network to another needs an efficient Handover (HO) decision to ensure the Quality of Service (QoS) and Quality of Experience (QoE).
Koodli, "Mobile IPv6 Fast Handovers," RFC Editor RFC5568, 2009.
In most health care facilities and centers, either a standardized format or dedicated training for handover is lacking leading to failure in maintaining high standards of clinical care3.