Service-based inter-radio access technology (inter-RAT) handover
US8792365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2010 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | May 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/26
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In geographical areas with incomplete Time Division Synchronous Code Division Multiple Access (TD-SCDMA) coverage, it may be beneficial for a multimode User Equipment (UE) to handover to a GSM network, a WCDMA network, a CDMA 1x RTT network, or an LTE network. When multiple networks are available to the UE and a poor signal quality is detected in the TD-SCDMA network, one of the available networks may be selected for inter-RAT handover based on a service type of the active call on the UE. For example, when a circuit-switched call, such as a voice call, is in progress on the UE, an inter-RAT handover to a GSM network occurs. In another example, when a packet-switched call, such as a data call, is in progress on the UE, an inter-RAT handover to a WCDMA network occurs. Selecting a network for inter-RAT handover based on an active call service type improves the service provided to the UE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.