Method for backup connection and an electronic device using the method

A memory embodying a computer program configured to perform operations that control a connection setup of a wireless terminal when executed by control logic of the wireless terminal, the operations comprising:

• detecting a need for a data transfer across a wireless link;
• checking a default connection parameter setting, wherein the default connection parameter setting corresponds to a particular service bearer;
• attempting to establish a connection with the default connection parameter setting;
• determining if the data transfer connection has been established using the default connection parameter setting;
• if no data transfer connection has been established, trying a second time to establish a data transfer connection with the default connection parameter setting;
• if no data transfer connection is established after the second try, serially selecting another connection parameter setting for the wireless link from a group of allowable connection parameter settings, wherein the group of allowable connection parameter settings is ordered in a pre-determined order, each of the connection parameter settings in the group of allowable connection parameter settings corresponding to a different service bearer, and wherein the connection parameter settings are serially selected, one-after-another in the pre-determined order, until a usable service bearer is found;
• establishing a data transfer connection with the usable service bearer;
• and
• after identification of a usable service bearer and a successful wireless data transfer, setting the default connection parameter setting to the usable service bearer.

A method for establishing a wireless data transfer connection between a remote application and a controlling application, where the wireless link from the remote application is implemented by a wireless terminal connected to the remote application, the method comprising:

• detecting that a default connection parameter setting for the wireless link is not usable, wherein the default connection parameter setting corresponds to a particular service bearer;
• determining if a command has been received from a controlling application changing a default order for selection of connection parameter settings to a new order and, if so, selecting a connection parameter setting in the new order established by the controlling application, wherein each of the connection parameter settings in the default and new orders corresponds to a different service bearer;
• and
• if no command has been received from the controlling application, selecting the connection parameter setting for the wireless link from a group of allowable connection parameter settings in the default order;
• serially selecting another connection parameter setting for the wireless link from the group of allowable connection parameter settings in the default order one-after-another until a usable connection parameter setting is identified, wherein the usable connection parameter setting corresponds to a particular service bearer;
• and
• after identification of a usable service bearer and a successful wireless data transfer, setting the default connection parameter setting to the usable service bearer.

A method for establishing a wireless data transfer connection between a remote application and a controlling application, where the wireless link from the remote application is implemented by a wireless terminal connected to the remote application, the method comprising:

• arranging a group of allowable service operators in a pre-determined order, wherein a service operator ordered first comprises a default service operator;
• arranging a group of allowable connection parameter settings in a pre-determined order, wherein each of the connection parameter settings corresponds to a different service bearer, and wherein a connection parameter setting ordered first comprises a default connection parameter setting;
• attempting to use the default service operator;
• if the default service operator is not usable, serially selecting another service operator from the group of allowable service operators in the pre-determined order one-after-another until a usable service operator is found;
• detecting a need for a data transfer over a wireless link;
• attempting to use the default connection parameter setting;
• detecting that the default connection parameter setting is not usable;
• serially selecting another connection parameter setting for the wireless link from the group of allowable connection parameter settings in the pre-determined order one-after-another until a usable connection parameter setting is identified, wherein the usable connection parameter setting corresponds to a particular service bearer;
• and
• after identification of a usable service bearer and a successful wireless data transfer, setting the default connection parameter setting to the usable service bearer.

A wireless terminal connected to a remote application, the wireless terminal comprising transmitting and receiving means, a memory, an application interface and a control unit, where the control unit further comprises a control logic, the control logic configured to attempt to use a default connection parameter setting, the default connection parameter setting corresponding to a particular service bearer;

• to detect that the default connection parameter setting is not usable;
• to select a connection parameter setting for the wireless link from a group of allowable connection parameter settings, wherein each of the allowable connection parameter settings comprising the group corresponds to a different service bearer;
• after identification of a usable service bearer and a successful wireless data transfer to set the default connection parameter setting to the usable service bearer;
• and serially to select a service operator from a list of allowable service operators, wherein the list is in a pre-determined order, and wherein the service operators are selected one-after-another in the pre-determined order.