US 9414285

Patent Overview — US 9,414,285 B2

Title: Handover with integrated antenna beam training in wireless networks

Patent number: US 9,414,285 B2

Application number: US 14/320,322

Inventors: Karl Georg Hampel, Junyi Li, Vincent Douglas Park

Assignee: Qualcomm Incorporated (original and current assignee per the source listing)

Key dates: Priority date 2014-06-30; filing date 2014-06-30; publication date 2016-08-09. Legal status listed as Active, with an adjusted expiration of 2034-12-30 (the source notes legal status and priority/expiration are assumptions, not legal conclusions).

Purpose: The disclosure addresses fast handover for access technologies using narrow, link-specific antenna beam pairs, particularly millimeter wave (mmW) systems. Because mmW requires narrow pencil beams and is sensitive to shadowing, and because current mobility protocols (e.g., 3GPP, IETF) are too slow to follow fast shadowing effects, each handover conventionally requires a training sequence between the mobile terminal and target base station, adding handover delay. The stated need is a solution enabling fast handover for such beam-pair technologies.

Plain-language scope: A user equipment (UE) communicates data with a wireless network over a first link to a first base station. The UE acquires a resource to perform a beam training sequence with a second base station, where the acquired resource permits training with the second base station while data is still communicated over the first link. The UE performs the beam training and exchanges signaling with the second base station using that resource to establish a second link, evaluates the second link's strength based on the training, and decides whether to switch data communication from the first to the second link based on that evaluation.

Classification highlights: H04W36/00 series (handover/reselection), H04B7/06 series (beamforming), H04W16/28 (beam steering), H04W36/08 (reselecting an access point).

Source: https://patents.google.com/patent/US9414285/en (fetched 2026-09-23)

What the excerpt does not establish: It provides only partial text. It does not supply the full claims, the complete detailed description, the referenced figures' contents (e.g., FIGS. 1–10 are named but not shown), any specific cited prior-art references, or prosecution history. No litigation, ownership-transfer, validity, or prior-art analysis is included or implied.