| 摘要 |
A communications system communicates data to and from a communications terminal. The communications system comprises a plurality of wireless communications networks arranged to transmit signals to and receive signals from the communications terminal via wireless access interfaces. An access server is configured to provide selection information to communications terminals representing rules for selecting one of the wireless communications networks to transmit data to or receive data from the wireless communications network. The communications terminal is configured to receive from the access server the selection information for selecting one of the wireless communications networks, which the communications terminal should access for transmitting or receiving the data, to determine one or more measurements of the wireless access interfaces of the wireless communications networks, and to select one of the wireless communications networks for transmitting or receiving the data in accordance with the selection information in combination with the one or more determined measurements of the wireless access interface of the wireless communications networks. The access server is provided with an indication of a preferred communications characteristic for transmitting or receiving the signals representing the data, and in dependence upon the preferred communications characteristic the access server is configured to adapt the selection information transmitted to the communications terminal for selecting the one of the wireless communications networks, and in accordance with the preferred communications characteristic the communications terminal is configured to adapt the determined measurements, and to select one of the wireless communications networks which most closely satisfy the preferred communications characteristic in accordance with the adapted-determined measurements. |
