Abstract: A mobile device with a port map maintaining a list of open ports for incoming data packets is provided. A first processor receives and demodulates inbound signals into data packets. A second processor processes at least one application bound to at least one open port. The second processor enters a sleep mode to reduce power consumption if no data packet is sent from the first processor to the second processor. When the first processor receives an inbound request signal, the first processor demodulates the inbound request signal into a first data packet targeted to a destination port, and looks up the port map to determine whether the destination port is listed in the port map. If the destination port is not listed in the port map, the first processor transmits a response signal to the sender of the inbound request signal or omits the inbound request signal without waking up the second processor.

Abstract: A user equipment (UE) implementing a message recovery method is disclosed, supporting messages of both the circuit switched (CS) domain and the packet switched (PS) domain. The UE roams in a wireless telecommunications system and performs a call setup procedure. When the UE receives an NAS message comprising a domain identifier and a protocol discriminator, the UE determines whether the domain identifier and the protocol discriminator are of the same domain. If the domain identifier and the protocol discriminator are of the same domain, the UE proceeds with processes corresponding to the NAS message. If the domain identifier and the protocol discriminator are of different domains, the NAS message is determined to be an error message, and the UE modifies the domain identifier of the NAS message to generate a recovered NAS message, and determines whether the recovered NAS message is compatible to the call setup procedure.

Abstract: A user equipment (UE) implementing a message recovery method is disclosed, supporting messages of both the circuit switched (CS) domain and the packet switched (PS) domain. The UE roams in a wireless telecommunications system and performs a call setup procedure. When the UE receives an NAS message comprising a domain identifier and a protocol discriminator, the UE determines whether the domain identifier and the protocol discriminator are of the same domain. If the domain identifier and the protocol discriminator are of the same domain, the UE proceeds with processes corresponding to the NAS message. If the domain identifier and the protocol discriminator are of different domains, the NAS message is determined to be an error message, and the UE modifies the domain identifier of the NAS message to generate a recovered NAS message, and determines whether the recovered NAS message is compatible to the call setup procedure.

Abstract: A method for synchronously maintaining packet data protocol (PDP) context status between a wireless communication network and a mobile station and an associated mobile station are disclosed to prevent from the asynchronous PDP context status caused by the prior arts. When both the mobile station and the network activate a PDP context for a packet-switched service, if the mobile station is to establish a circuit-switched connection with the network, the mobile station will request the network to suspend the packet-switched service. After the circuit-switched connection is established, the mobile station locally deactivates the PDP context. After the circuit-switched connection is disconnected, if the network informs the mobile station that the packet-switched service is resumed, the mobile station will inform the network that the PDP context is deactivated.

Abstract: A mobile device with a port map maintaining a list of open ports for incoming data packets is provided. A first processor receives and demodulates inbound signals into data packets. A second processor processes at least one application bound to at least one open port. The second processor enters a sleep mode to reduce power consumption if no data packet is sent from the first processor to the second processor. When the first processor receives an inbound request signal, the first processor demodulates the inbound request signal into a first data packet targeted to a destination port, and looks up the port map to determine whether the destination port is listed in the port map. If the destination port is not listed in the port map, the first processor transmits a response signal to the sender of the inbound request signal or omits the inbound request signal without waking up the second processor.

Abstract: A network search method for a communication apparatus connected to a network is disclosed. The method comprises the following steps. The communication apparatus enters a sleep mode when the communication apparatus loses signals from the network. Then, power status of the communication apparatus is detected. A trigger signal is automatically sent when a change in power status of the communication apparatus is found. Next, a radio frequency module is enabled to search for the signals from the network according to the trigger signal so as to re-connect to the network.

Abstract: A method for reducing UE power consumption under a communication network is disclosed. The key principle of the method is an algorithm to force a RRC connection between a communication network and a UE to be released when mail client completes the synchronization process and the UE has no activity. The method includes steps of: (a) checking if a user inactive event occurs in the UE; (b) sending a signaling connection release message on a dedicated control channel from the UE.