Support for handoffs in high rate packet data systems
US8811997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A first handoff is for an inter-AN cell selection where a source AN allows the AT to add a cell under the control of a different AN to its active set and then allows the AT to switch to the target AN. A bearer path is established between the source and target AN to transfer the data traffic using an exchange of messages to register the AT's movement from one BTS to another BTS. The A8/A10 connections remain anchored at the source AN so a bearer path is needed between the source and target AN to transfer the data traffic. The second handoff occurs when the source AN specifies a move of the AT to a new AN proactively. New connections are established at the target AN to support the AT, and the AT is subsequently moved to the target AN via the relevant air-interface messaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.