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Method and device for transmitting time division-synchronous code division multiple access (TD-SCDMA) long term evolution (TD-LTE) TTI bundling

A technology of transmission device and transmission time, which is applied in the field of communication, can solve problems such as large time delay and inability to guarantee data packet QoS, and achieve the effect of shortening existence time, reducing delay, and improving QoS

Active Publication Date: 2013-06-05
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Description
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Problems solved by technology

[0002] According to the existing LTE FDD TTI bundling transmission method, the HARQ maximum number of retransmissions (maxHARQTx) is usually set to 20 based on the standard regulation TTI_BUNDLE_SIZE=4, but when the maximum number of retransmissions is used for TTI bundling transmission in TDD mode, the In the case of TDD frame configuration 1, the survival time of the HARQ process will reach 90ms, resulting in a large time delay in the transmission of data packets such as VoIP, streaming media, etc., and it is impossible to ensure that the data packets have better QoS in transmission (Quality of Service)

Method used

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  • Method and device for transmitting time division-synchronous code division multiple access (TD-SCDMA) long term evolution (TD-LTE) TTI bundling

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0016] figure 1 A schematic structural diagram illustrating a transmission device for TTI bundling transmission according to one aspect of the present invention. The transmission device includes a first determination device 1 and a binding transmission device 2 . Wherein, the transmission device is included in a base station of a wireless communication system. The wireless communication system includes but is not limited to a wireless communication system based on 3GPP LTE. The base station includes but not limited to BS, e-NodeB, home base station, macro base station and so on. It should be noted that those skilled in the art should understand that the wireless communication system and base station are not limited to what is described above.

[0017] The first determining means 1 uses the current time point plus the time offset of the new data packet to ...

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Abstract

The invention provides a method and a device for transmitting a time division-synchronous code division multiple access (TD-SCDMA) long term evolution (TD-LTE) TTI bundling. The transmitting device comprises a first determining device and a first binding transmitting device. The first determining device is used for enabling time migration quantity of a current time point by adding a novel to-be-transmitted data packet to be used as a start transmitting time point of the data packet, wherein the time migration quantity is determined according to pre-determined hybrid automatic repeat request (HARQ) maximum retransmission times. The first binding transmitting device is used for transmitting the TTI bundling according to the start transmitting time point of the data packet and the HARQ maximum retransmission times. The method and the device for transmitting the TD-LTE TTI bundling have the advantages that a small HARQ maximum retransmission time is selected, the existing time of each HARQ retransmission process is shortened, the time delay of the transmitting data packets is reduced, the quality of service (QoS) of each transmitting data packet is guaranteed, and furthermore, channel resources can be fully utilized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for TTI bundling transmission. Background technique [0002] According to the existing LTE FDD TTI bundling transmission method, the HARQ maximum number of retransmissions (maxHARQTx) is usually set to 20 based on the standard regulation TTI_BUNDLE_SIZE=4, but when the maximum number of retransmissions is used for TTI bundling transmission in TDD mode, the In the case of TDD frame configuration 1, the survival time of the HARQ process will reach 90ms, resulting in a large time delay in the transmission of data packets such as VoIP, streaming media, etc., and it is impossible to ensure that the data packets have better QoS in transmission (Quality of Service). Contents of the invention [0003] The purpose of the present invention is to provide a method and device for TTI bundling transmission in TD-LTE. [0004] According to one aspect of the present inve...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16
Inventor 付家锋姚劲松
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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