Control method and device for confirming mode data transmission
A technology for confirming mode data and control devices, applied in the field of data transmission, can solve the problems of failing to meet the requirements of LTE, wasting Uu interface wireless resources, wasting wireless resources, etc., to achieve cost savings, reduce system complexity, and increase confirmation speed Effect
Active Publication Date: 2012-06-27
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology
[0011] 4. Waste precious Uu interface wireless resources for status report transmission: Since the confirmation of RLC AM mode data transmission is based on status reports, this leads to a large number of status report transmissions in the Uu interface, which greatly wastes precious wireless resources. resource
[0012] In LTE with very high data rate (uplink 50Mbps), it is required that the data transmission in AM mode can be acknowledged as soon as possible, so the method based on the status report adopted in the above-mentioned 3GPP R6 cannot meet the requirements of LTE
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[0048] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and unnecessary details and functions for the present invention will be omitted during the description to prevent confusion in the understanding of the present invention.
[0049] An important function of the link layer protocol of the LTE technology is data retransmission, and its hybrid automatic error detection retransmission (HARQ) protocol ensures efficient transmission of radio resources. In the link layer structure of 3G LTE, the HARQ protocol will still be used between the terminal equipment (UE, User Equipment) and the evolved base station (eNode B), and the radio link control protocol (Radio LinkControl, RLC) on the HARQ protocol layer The protocol runs between end devices and central nodes, and if a transmission failure occurs, the HARQ protocol is able to efficiently retransmit using incremental redundancy and soft connection techniques.
[005...
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The invention discloses a method for controlling data transmission in an acknowledgement mode. The method comprises the following steps: after a protocol data unit is transmitted based on acknowledgement mode, when affirmative acknowledgement message of hybrid automatic error request repeat is received, according to indication information including information of indicating repeat or continuous transmission of new data, the received affirmative acknowledgement message of the hybrid automatic error request repeat is inspected whether the message is correct or not; when correction of the received affirmative acknowledgement message is affirmed, a corresponding protocol data unit is affirmed to be sent successfully, related protocol layers are notified, and related buffers are cleared. The invention also discloses a device for controlling data transmission in an acknowledgement mode. The method and the device can greatly improve the acknowledgement speed of data transmission in an acknowledgement mode, reduce the size of the buffers, saves the cost of protocol data unit header, and reduces transmission of status report, thereby saving wireless resource of a Uu interface, reducing system complexity, and realizing simple layer-two processing process.
Description
technical field [0001] The present invention relates to data transmission technology, in particular to a control method and device for data transmission in confirmation mode, which can greatly improve the confirmation speed of data transmission in confirmation mode, reduce the buffer size, save the overhead of protocol data unit headers, and reduce the transmission of status reports, thereby The wireless resource of the Uu interface is saved, the system complexity is reduced and a simple layer two (L2) processing process is realized. Background technique [0002] With the emergence of the concept of broadband wireless access and the gradual maturity of the new generation technology with Orthogonal Frequency Division Multiplexing (OFDM) technology as the core, the access rate has increased to 100 Mbit / s, compared with the 2 Mbit / s broadband code Division multiple access (WCDMA) R99 transmission rate and 14.4Mbit / s high-speed downlink packet access (HSDPA) peak rate can no lon...
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IPC IPC(8): H04L1/16H04L1/18H04L1/00H04L12/56
Inventor 杨涛
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD