A method and apparatus for discarding a packet data convergence protocol (PDCP) service data unit (SDU) are disclosed. A PDCP layer sets a timer and discards a PDCP SDU upon expiration of the timer. The timer may be set upon receiving the PDCP SDU from an upper layer or upon submitting the PDCP SDU to a lower layer for transmission. The timer and a radio link control (RLC) discard timer may be coordinated. Alternatively, the PDCP layer may discard the PDCP SDU based on a notification from an RLC layer or based on a PDCP status report.

Method and apparatus for pcdp discard

The invention discloses a packet data convergence protocol (PDCP) layer handling data method, which comprises the following steps that: when a discard timer of a PDCP service data unit (PDCP SDU) is time out or when the PDCP SDU which is delivered to a counter end is confirmed by a status report from the counter end, whether the PDCP SDU has the PDCP treatment is judged, if the PDCP SDU does not has the PDCP treatment, the PDCP SDU is discarded. The invention also correspondently discloses a packet data convergence protocol layer handling data system. Through the method and the system, a decompressor of a receiver PDCP can be guaranteed to successfully decompress, so a series of repair procedures after the decompression is failed can be avoided, and the bandwidth can be saved.

Packet data convergence protocol layer handling data method and system

The invention provides a reception acknowledgement processing method and a base station, relates to the field of mobile communication, and solves the problem of reduced transmission flow caused by misjudging a packet loss reason when data is retransmitted by using a transmission control protocol (TCP). The method comprises the following steps of: after judging a received acknowledgement (ACK) to be effective, inquiring ACK repetition times of the ACK stored in an ACK control block matched with the ACK and adding one time to the ACK repetition times, wherein the ACK carries a sequence number of a message needing to be retransmitted; and if the ACK repetition times does not reach a predetermined suppression threshold, discharging the ACK. The technical scheme provided by the invention is suitable to be used in a network which adopts a hybrid automatic repeat request (HARQ) retransmission mechanism.

Reception acknowledgement processing method and base station

The invention discloses a method for reset control of radio link control entity which comprises: setting a corresponding discard timer for each Packet Data Convergence Protocol service data unit (PDCP SDU) on Packet Data Convergence Protocol (PDCP) layer; starting the discard timer when the upper layer of the PDCP layer transfers the PDCP SDU; stopping the discard timer, setting and starting an RLC reset timer when a first predetermined condition is fulfilled, and triggering the reset procedure of the RLC entity when a second predetermined condition is fulfilled. The first predetermined condition is: the PDCP SDU has been transferred to the RLC layer and the RLC sequence number has been assigned before the discard timer expires. The second predetermined condition is: when the RLC reset timer expires, there exist RLC PDUs which are not transferred successfully among all of the RLC PDUs.

Method for reset control of radio link control entity

The invention provides a method for processing user layer data in a practically deployed tumble detecting system. The method comprises the steps: detecting IP data flow; judging whether the network is stable or the obvious disorder packet missing phenomenon exists at the server side during packet receiving, if yes, using the UDP to transmit IP data flow, and if not, using the TCP to transmit the IP data flow; when using the TCP to transmit the IP data flow, judging whether the IP data flow is an ACK data packet of the TCP, if yes, marking the IP data flow as high priority and sending the IP data flow to a high priority channel for transmission after PDCP processing and RLC processing are conducted on the IP data flow, and if not, marking the IP data flow as low priority and sending the IP data flow to a low priority channel for transmission after PDCP processing and RLC processing are conducted on the IP data flow. The method and device for processing user layer data in the practically deployed tumble detecting system can monitor the movement state of each person in real time.

Method and device for processing user layer data in practically deployed tumble detecting system

A method is provided for discarding the service data units in the acknowledgement mode of the radio link control (RLC) of the wireless communications systems, including the steps of, A) processing the SDU in the RLC layer from the higher protocol layer, the protocol data unit in each RLC layer then is formed; B) the PDU in each RLC layer corresponding to the SDU is primitively transmitted and/or retransmitted to the peer layer, and judged whether it meets the predetermined condition of discarding the SDU; C) if the said predetermined condition of discarding the SDU is satisfed, then the SDU is discarded; otherwise, the step B) is performed continuously by the step C); wherein, the said predetermined condition is that the total retransmission times exceeds a predetermined value, wherein n /=2, amd less than or equal to the total of the PDU in the RLC layer of the said SDU. Corresponding device and system of the above mentioned method are also provided. Method and device of the invention can ensure that the channel rate doesn't influence the ratio of discarding SDU, and prevents the appearance of the too large delay changing.

Method for discarding the service data unit in the acknowledgement mode of the RLC protocol and its device

A method is provided for discarding the service data units in the acknowledgement mode of the radio link control (RLC) of the wireless communications systems, including the steps of, A) processing the SDU in the RLC layer from the higher protocol layer, the protocol data unit in each RLC layer then is formed; B) the PDU in each RLC layer corresponding to the SDU is primitively transmitted and/or retransmitted to the peer layer, and judged whether it meets the predetermined condition of discarding the SDU; C) if the said predetermined condition of discarding the SDU is satisfed, then the SDU is discarded; otherwise, the step B) is performed continuously by the step C); wherein, the said predetermined condition is that the total retransmission times exceeds a predetermined value, wherein n ≥2, amd less than or equal to the total of the PDU in the RLC layer of the said SDU. Corresponding device and system of the above mentioned method are also provided. Method and device of the invention can ensure that the channel rate doesn't influence the ratio of discarding SDU, and prevents the appearance of the too large delay changing.

Method and apparatus for discarding the service data units in the acknowledgement mode of the rlc in the wireless communications system

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Method for discarding the service data unit in the acknowledgement mode of the RLC protocol and its device

Method and apparatus for discarding the service data units in the acknowledgement mode of the rlc in the wireless communications system