Uplink data stream retransmission method and device

A data stream transmission and data stream technology, applied in the field of communications, can solve the problems of reducing system retransmission performance and difficult to implement system transmission conditions.

Inactive Publication Date: 2017-04-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The embodiment of the present invention provides an uplink data flow retransmission method and device to solve the problem in the prior art that the uplink retransmission process is difficult to implement the current transmission conditions of the system, thereby reducing the system retransmission performance

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  • Uplink data stream retransmission method and device
  • Uplink data stream retransmission method and device
  • Uplink data stream retransmission method and device

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no. 1 example

[0029] see figure 2 , which is a flow chart of the first embodiment of the uplink data stream retransmission method of the present invention:

[0030] Step 201: The UE receives the HARQ confirmation character fed back by the base station, and the HARQ confirmation character includes information about whether the data stream transmission of the UE's previous data stream transmission is correct.

[0031] In the embodiment of the present invention, when the UE performs the previous transmission of uplink data, the control information of the data flow carried by the primary E-DPDCH is carried by the primary E-DPCCH, and the control information of the data flow carried by the secondary E-DPDCH is carried by the secondary E-DPCCH. information. After the data stream of the previous transmission is transmitted to the base station, the base station feeds back to the UE the HARQ acknowledgment character including whether the data stream of the previous transmission is correct.

[003...

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Abstract

The invention discloses a method and device for retransmitting an uplink data stream. The method comprises the steps that UE receives an HARQ acknowledging character which is fed back by a base station and comprises the situation of whether data stream transmission is correct or not when the data stream is transmitted before by the UE; when the UE determines the situation that data stream retransmission needs conducting according to the HARQ acknowledging character, transmission conditions in the retransmitting process are acquired when data stream retransmission is conducted in a next-time HARQ circular time; the UE transmits the uplink data stream to the base station according to the transmission conditions, and carries the indications of whether the data stream carried by a data channel corresponding to a control channel are intersected or not according to an auxiliary E-DPCCH. According to the method and device for retransmitting the uplink data stream, when the UE conducts uplink data stream retransmission, a proper transmission mode and a data channel for carrying the retransmission data stream can be selected according to the transmission conditions in the retransmission process so as to ensure that the base station is informed of the carrying situation of data stream retransmission, and accordingly the UE can adapt with the current transmission conditions of a system, and the retransmission performance of the system can be improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and device for retransmitting an uplink data flow. Background technique [0002] In communication systems such as LTE (Long Term Evolution, Long Term Evolution), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) HSDPA (High Speed ​​Downlink Packet Access, High Speed ​​Downlink Packet Access), in order to increase the user peak rate, MIMO ( Multiple-Input Multiple-Output, multiple input multiple output) technology. In the UL (Up Link, uplink) MIMO (Multiple-Input Multiple-Output, multiple-input multiple-output) system, in the existing DPCCH (Dedicated Physical Control Channel, dedicated physical control channel), the main E-DPCCH (E-DCH ( Enhanced Dedicated Channel, Enhanced Dedicated Channel) Dedicated Physical Control Channel, E-DCH Dedicated Physical Control Channel), Main E-DPDCH (E-DCH (Enhanced Dedicated Channel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16
Inventor 杨毅赵悦莹焦淑蓉
Owner HUAWEI TECH CO LTD
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