Telefonaktiebolaget Lm Ericsson (publ)

Marcus Davidsson

Joakim Axmon

Ali Nader

Dandan Hao

Jan Wichert

Anne-Lott Hedberg

Vidha Agarwal

Sapna Sangal

Ann-Lott Hedberg

A wireless communication device communicates with a GPRS wireless network where ciphering has gone out of sync between the wireless communication device and the wireless network. The wireless communication device triggers an authentication procedure that re-synchronizes the ciphering. Following the trigger, the wireless communication device and the wireless network continue the authentication procedure so that ciphering parameters can be negotiated again and data communication can resume.

Mitigating drawbacks of ciphering failures in a wireless network

The embodiments disclose a method of a wireless communication device adapted to operate in compliance with a first radio access technology in association with a first network and in compliance with a second radio access technology in association with a second network. The method comprises reading a first information comprised in a first signal received from a first network node of the first network using the first radio access technology; and if the first information comprises a first list of neighboring cells for the second radio access technology, using the first list of neighboring cells to provide idle mode mobility management for the second radio access technology in the second network. The embodiments also disclose a wireless communication device performing the method.

Method and wireless communication device for idle mode mobility management

A method and a device in a communication apparatus for maintaining an established connection between said apparatus and a network node. The connection is established by a mobility management unit for providing a mobility management procedure. An acceptance message is issued by the node in response to a request relating to a first mobility management procedure. If any request relating to a second mobility management procedure issued by an upper layer is received by the mobility management unit after the request relating to the first procedure is transmitted and before the acceptance message is received, a maintaining request to maintain the connection is transmitted to the node in response to the acceptance message.

Method, control device and network node for maintaining a connection when a request is pending

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Lund, Sweden

Marcus Davidsson