Abstract: A method of polling in a wireless communications system includes prohibiting polling within a first predetermined period and triggering a poll function while polling is prohibited. After the first predetermined period has expired the method determines that there are no protocol data units (PDUs) scheduled for transmission or re-transmission and that there is at least a transmitted PDU that is not acknowledged yet, and selects a PDU to schedule for re-transmission to fulfill the poll function.

Abstract: When a polling procedure is triggered, the value of the poll sequence number field within a status protocol data unit is always set to be a sequence number of a next protocol data unit to be transmitted for the first time minus 1, regardless of the configured transmission window size so as to avoid unnecessary transmission delay.

Abstract: A method for configuring signaling radio bearer in a wireless communications system includes not ciphering a non-concatenated message on a radio resource control layer or its lower layer and transmitting a concatenated message and the non-concatenated message on different signaling radio bearers, wherein a non-concatenated message consists of a Non-Access Stratum message only and a concatenated message consists of both Non-Access Stratum message and Access Stratum message.

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 of polling in a wireless communications system includes prohibiting polling within a predetermined period and triggering a poll function while polling is prohibited. After the predetermined period has expired the method determines that there are no protocol data units (PDUs) scheduled for transmission or re-transmission and that the poll function was triggered by a “Every Poll_PDU PDU” trigger, and selects a PDU to schedule for re-transmission to fulfill the poll function.

Abstract: A method for initiating a storage window of a receiving end in a wireless communications system, which periodically retransmits previously transmitted data packets in an unacknowledged mode, includes receiving a first PDU after a receiving entity of the receiving end is established, re-established, or after a timer expires, and initiating a state variable, which is defined to be a sequence number of the highest numbered packet that has been received, according to a sequence number of the first received packet. An example of the wireless communications system is the Universal Mobile Telecommunications System (UMTS) with a multimedia broadcast/multicast service (MBMS) application.

Abstract: A method of polling in a wireless communications system includes prohibiting polling within a predetermined period and triggering a poll function while polling is prohibited. After the predetermined period has expired the method determines that there are no protocol data units (PDUs) scheduled for transmission or re-transmission and that the poll function was triggered by a “window-based” trigger, and selects a PDU to schedule for re-transmission to fulfill the poll function.

Abstract: A communications device utilized in a wireless communications system has an RLC entity with a transmitting side and a receiving side. Handling timers during reestablishment of the transmitting side includes only reestablishing the transmitting side in the RLC entity of the communications device, stopping a first timer corresponding to the transmitting side, and prolonging and not stopping a second timer corresponding to the transmitting side. The second timer is not a periodic timer.

Abstract: A method for enhancing transmission efficiency in a wireless communications system includes a first protocol entity of the wireless communications system always performing a duplication avoidance and reordering, called DAR hereinafter, function on a logic channel, without referring to a configuration of the DAR function by an upper-layer protocol entity.

Abstract: A method of handling a variable of a Radio Link Control reset procedure during receiver-side-only re-establishment in a wireless communications system includes resetting a reset state variable, used for counting the number of times a RESET protocol data unit is scheduled to be transmitted, during receiver-side-only re-establishment.

Abstract: A method for polling transmission status in a wireless communications system includes determining whether a buffer of a transmitter contains at least a packet that has been transmitted, has not been discarded, and has not yet been acknowledged when there is no packet scheduled for transmission or retransmission while a polling procedure is triggered and is not prohibited, selecting a packet in order to transmit a poll, and scheduling the selected packet for retransmission.

Abstract: A method for enhancing data transmission efficiency in a wireless communications system includes using a first receiving window and a second receiving window in a receiver side of an entity operating in Acknowledgement Mode, wherein the first receiving window provides a function of Automatic Retransmission Request and the second receiving window is utilized for detecting missing Sequence Numbers.

Abstract: A communications device utilized in a wireless communications system has an RLC entity with a transmitting side and a receiving side. Handling timers during re-establishment of the receiving side includes only re-establishing the receiving side in the RLC entity of the communications device, stopping a first timer corresponding to the receiving side, and prolonging and not stopping a second timer corresponding to the transmitting side.

Abstract: A wireless communications system has a communications device, which has an RLC entity having a transmitting side and a receiving side. When re-establishing the transmitting side, to handle control PDUs, only the transmitting side in the RLC entity of the communications device is re-established, a first control PDU corresponding to the transmitting side is discarded, and a second control PDU corresponding to the receiving side is retained and not discarded.

Abstract: A method of deciphering parameter synchronization in a reception end of a wireless communications system includes setting a receiving window of a first entity as a Push Type window with a window size greater than or equal to a window size of a receiving window of a second entity when the second entity operates in an acknowledged mode.

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 handling de-activation of a first Hybrid Automatic Repeat Request (HARQ) process used in a mobile of a wireless communications system includes receiving a Primary Absolute Grant (AG) message indicating to de-activate the first HARQ process, de-activating the first HARQ process, and activating all HARQ processes and using a grant provided by a Secondary AG message as a serving grant if all the HARQ processes are de-activated and a secondary grant function is configured.

Abstract: 23A wireless communications device has a first security key, a second security key, and established channels. Each established channel has a corresponding security count value, and utilizes a security key. At least one of the established channels utilizes the first security key. The second security key is assigned to a new channel. A first set is then used to obtain a first value. The first set has only security count values of all the established channels that utilize the second key. The first value is at least as great as the x most significant bits (MSBx) of the greatest value in the first set. The MSBx of the initial security count value for the new channel is set equal to the first value. If the first set is empty, then the initial security count is set to zero.

Abstract: 23A wireless communications device has a first security key, a second security key, and established channels. Each established channel has a corresponding security count value, and utilizes a security key. At least one of the established channels utilizes the first security key. The second security key is assigned to a new channel. A first set is then used to obtain a first value. The first set has only security count values of all the established channels that utilize the second key. The first value is at least as great as the x most significant bits (MSBx) of the greatest value in the first set. The MSBx of the initial security count value for the new channel is set equal to the first value. If the first set is empty, then the initial security count is set to zero.

Abstract: 23A wireless communications device has a first security key, a second security key, and established channels. Each established channel has a corresponding security count value, and utilizes a security key. At least one of the established channels utilizes the first security key. The second security key is assigned to a new channel. A first set is then used to obtain a first value. The first set has only security count values of all the established channels that utilize the second key. The first value is at least as great as the x most significant bits (MSBx) of the greatest value in the first set. The MSBx of the initial security count value for the new channel is set equal to the first value. If the first set is empty, then the initial security count is set to zero.