公开(公告)号：US20110189997A1

公开(公告)日：2011-08-04

申请号：US12698384

申请日：2010-02-02

申请人： Swati TIWARI ,  Hemanth Balaji PAWAR ,  Esmail H. DINAN ,  Krishna SITARAM ,  Jong-Hak JUNG

发明人： Swati TIWARI ,  Hemanth Balaji PAWAR ,  Esmail H. DINAN ,  Krishna SITARAM ,  Jong-Hak JUNG

IPC分类号： H04W36/00

CPC分类号： H04W36/26 ,  H04W36/00

摘要： Systems and methods of operating multimode 3G/4G communications devices in an overlapping 3G/4G coverage area (e.g., WiMAX or LTE/CDMA-EvDO) include determining a loading condition of the 3G and 4G base stations. If the 3G and 4G base stations are lightly loaded, one or more 4G Channel Quality Indicators (CQI) are compared with one or more corresponding 3G Data Rate Control (DRC) indices to determine which of the 3G and 4G networks allows a higher data throughput. The dual mode communications device is handed off to a 4G base station associated with the 4G coverage if the 4G network allows the higher data throughput; otherwise, the dual mode communications device is handed off to a 3G base station. User priorities, application categories, and/or MIMO and diversity modes may be used to determine handoff if the base stations are more than lightly loaded.

摘要翻译： 在重叠的3G / 4G覆盖区域（例如，WiMAX或LTE / CDMA-EvDO）中操作多模3G / 4G通信设备的系统和方法包括确定3G和4G基站的负载状况。 如果3G和4G基站轻载，则将一个或多个4G信道质量指示符（CQI）与一个或多个相应的3G数据速率控制（DRC）索引进行比较，以确定3G和4G网络中的哪一个允许更高的数据吞吐量 。 如果4G网络允许更高的数据吞吐量，则双模式通信设备被切换到与4G覆盖相关联的4G基站; 否则，双模式通信设备被切换到3G基站。 用户优先级，应用类别和/或MIMO和分集模式可用于确定基站是否多于轻载。