Abstract: A method for enhancing a CPC function in a wireless communications system includes transmitting a packet to a UE by a network after the UE activates a less operation and a discontinuous packet function of the CPC function, and retransmitting the packet according to a buffer length by the network when the UE does not successfully receive the packet.

Abstract: A method for enhancing continuous packet connectivity or a discontinuous operation, including a discontinuous packet function, in a user equipment of a wireless communications system includes activating the discontinuous packet function, and stopping the discontinuous packet function and reverting to a continuous packet processing status when an uplink capability of the user equipment is restricted

Abstract: A method for enhancing discriminability of orders in a network of a wireless communications system includes activating a High Speed Downlink Package Access function, and transmitting a control order corresponding to the High Speed Downlink Package Access function multiple times.

Abstract: A method for handing reset in a first communications device of a wireless communications system is disclosed. The first communications device includes a first transmitter and a receiver. The method includes receiving a packet from a second communications device by the receiver, triggering a reset procedure by the receiver when a protocol error is detected by the receiver according to the packet, and resetting the receiver and not resetting the first transmitter after the reset procedure is triggered.

Abstract: A method for recovering a protocol error in a receiver of a wireless communications system includes receiving a packet including a compressed and ciphered header, performing a deciphering procedure on the header according to at least a deciphering parameter to get a deciphered result, performing a decompression procedure on the deciphered result according to a decompression algorithm to get a decompression result, performing a check procedure on the decompression result to determine whether the deciphering parameter is correct, and recovering the protocol error when a result of the check procedure indicates that the deciphering parameter is not correct.

Abstract: Whenever the Receiver of this invention receives an AMD PDU or a UMD PDU with its “Length Indicator” having an invalid or a reserved value, the Receiver discards such a PDU and treats it as never received. The Receiver may report its receiving status accordingly if a report is required. This invention avoids invoking unnecessary RLC reset procedures and reduces the chance of losing HFN synchronization during AM or UM data transmissions.

Abstract: A method for handling reordering in a Packet Data Convergence Protocol layer of a wireless communications system includes receiving a sequence of packets, performing a reordering function for the sequence of packets, and performing a deciphering function for the sequence of packets after the reordering function is performed.

Abstract: In order to ensure a successful inter-system handover, the present invention provides a method for ciphering algorithm change in a wireless communications system. The method includes allowing a ciphering algorithm of a user equipment to be changed during an inter-system handover, where the inter-system handover is preferably a handover from a GSM EDGE radio access network, abbreviated to GERAN, lu mode to a UMTS radio access network, abbreviated to UTRAN.

Abstract: In order to prevent from inappropriately terminating a current Multimedia Broadcast Multicast Service, called MBMS hereinafter, service reception when a radio resource control (RRC) state of a user equipment (UE) is operated in a CELL_DCH state, the present invention provides a method of selecting an MBMS operating frequency for the UE in a wireless communications system. The method includes determining whether a current operating frequency of the UE is equal to a preferred frequency corresponding to the MBMS services prioritized by the upper layers when the RRC state of the UE is operated in the CELL_DCH state, and continuing using the current operating frequency when the current operating frequency of the UE is equal to the preferred frequency corresponding to the MBMS services prioritized by the upper layers.

Abstract: In order to prevent from being incapable of receiving Multimedia Broadcast Multicast Service, called MBMS hereinafter, service when a user equipment (UE) has a connection for signaling only, the present invention provides a method of selecting an MBMS operating frequency for the UE in a wireless communications system. The method includes determining a radio bearer state of the UE, and switching a current operating frequency of the UE to a preferred frequency corresponding to an MBMS service prioritized by upper layers when the radio bearer state of the UE is in signaling transmission state.

Abstract: In order to prevent a user equipment, called UE hereinafter, from wasting unnecessary radio resources and occurrence of software failure of the UE, a method of performing an operating frequency transferring request for the UE in a wireless communications system includes reporting a request message to request for transferring to a preferred frequency corresponding to UE interested MBMS services when the UE operates in the CELL_DCH state and has successfully selected the preferred frequency as a current operating frequency.

Abstract: A method for performing MIMO transmission in a UE capable of triggering at least one HARQ procedure in a wireless communications system is disclosed. The method includes selecting at least one HARQ process or at least one HARQ entity corresponding to a specified transmitter according to at least one transmission condition, and performing the MIMO transmission through the selected at least one HARQ process or the selected at least one HARQ entity.

Abstract: A method for performing uplink transmission in a MIMO UE of a wireless communications system is disclosed. The UE is capable of triggering at least one HARQ procedure. The method includes configuring at least one receiver of the UE to receive at least one control or configuration message corresponding to at least one HARQ entity or corresponding to at least one HARQ process of an HARQ entity of at least one HARQ entity from at least one cell for uplink transmission, and determining transmission attributes or configuration of the uplink transmission according to the at least one control or configuration message.

Abstract: A method for setting transmission grant of a MIMO UE in a network of a wireless communications system for uplink transmission is disclosed. The method includes sending at least one control or configuration message corresponding to each HARQ entity of at least one HARQ entity or at least one HARQ process of an HARQ entity to the UE to set transmission grant of the UE when the UE performs uplink transmission through the at least one HARQ entity or the at least one HARQ process of the HARQ entity.

Abstract: A method for performing MIMO transmission in a network of a wireless communications system is disclosed. The method includes transmitting at least one traffic attribute corresponding to at least one HARQ entity or at least one HARQ process to a user equipment, called UE hereinafter, when the network performs downlink MIMO transmission through the at least one HARQ entity or the at least one HARQ process.

Abstract: A method for handling protocol errors in a wireless communications system includes establishing a first signaling radio bearer and triggering an integrity protection procedure of the first signaling radio bearer, receiving a first message on the first signaling radio bearer, and neglecting the first message and initiating a synchronization procedure to synchronize a ciphering parameter when a predefined condition is met.

Abstract: A method for setting a header of a protocol data unit in a radio link control layer of a wireless communications system, wherein a length indicator consisting of multiple bits is used to indicate an ending position of a first service data unit carried by a first PDU, includes under a predefined condition, not inserting a length indicator for a second SDU carried by a second PDU in the header of the second PDU.

Abstract: A method for handling protocol errors in a receiver of a wireless communications system includes receiving a ciphered PDU, deciphering the PDU, and triggering a reset procedure when at least one field of the PDU comprises an invalid value.

Abstract: A packet transmission method for a transmitter in a wireless communications system, for enhancing transmission efficiency when sporadic data transmission is needed, is disclosed. The packet transmission method includes initiating an HARQ procedure, triggering a transmission of a packet, and sending the packet repetitively until a predefined number of ACKs corresponding to the packet are received.

Abstract: A method for a user equipment setting configurations of an uplink transport channel in a wireless communications system includes receiving an uplink transport channel message, and setting configurations of an enhanced dedicated transport channel (E-DCH) according to the uplink transport channel message when an uplink transport channel of the user equipment is set to be E-DCH.