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Hybrid automatic repeat request (HARQ) method and system suitable for oversized range coverage

A hybrid automatic retransmission and range technology, applied in the HARQ method and related system fields, can solve the problem that the HARQ mechanism cannot adapt to the ultra-large range coverage

Active Publication Date: 2013-06-19
航广卫星网络有限责任公司
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  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a hybrid automatic repeat request HARQ method and system suitable for ultra-wide coverage, which can better solve the problem that the HARQ mechanism of the existing system cannot adapt to ultra-wide coverage

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  • Hybrid automatic repeat request (HARQ) method and system suitable for oversized range coverage
  • Hybrid automatic repeat request (HARQ) method and system suitable for oversized range coverage
  • Hybrid automatic repeat request (HARQ) method and system suitable for oversized range coverage

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Embodiment Construction

[0039] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0040] image 3 It shows the principle diagram of the hybrid automatic repeat request HARQ method suitable for ultra-wide coverage provided by the embodiment of the present invention, as shown in image 3 As shown, the steps include:

[0041] Step S301, setting a distance threshold value for adaptively adjusting the ACK / NACK transmission subframe of the mobile terminal in the base station. The distance threshold includes a first threshold and a second threshold, wherein the first threshold is smaller than the second threshold.

[0042] Step S302, the base station calculates the distance between it and the mobile terminal in real time during sending the ...

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Abstract

The invention discloses a hybrid automatic repeat request (HARQ) method and a system which are suitable for oversized range coverage. The method comprises that a distance threshold value of an acknowledgement character (ACK) / negative acknowledgement (NACK) emitting subframe used for self adapting and adjusting a mobile terminal is set in a base station, the distance between the base station and the mobile terminal is calculated, the calculated distance is compared with the distance threshold value during the a period that the base station sends an HARQ package to the mobile terminal, according to the comparative result, the base station sends adjusting messages of the ACK / NACK emitting subframe to the mobile terminal, and the mobile terminal confirms the ACK / NACK emitting subframe used for emitting ACK / NACK messages to the base station according to the subframe position of the HARQ package received by the mobile terminal and the adjusting messages. The HARQ method and the system which are suitable for the oversized range coverage can enable an existing system to adapt to a scene with the oversized range coverage.

Description

technical field [0001] The invention relates to the communication field, in particular to a HARQ method suitable for ultra-wide coverage and a related system. Background technique [0002] Currently, the n-process stop-and-wait mechanism HARQ technology works as follows figure 1 As shown, after receiving the data packet sent by the base station, the mobile terminal sends an ACK / NACK message to the base station, so that the base station can confirm whether the mobile terminal has received the data packet. When the base station receives the ACK information, it continues to send the next data packet to the mobile terminal, otherwise, it repeats the original data packet. [0003] Take the behavior in LTE FDD mode as an example, such as figure 2 As shown, for a mobile terminal, after the mobile terminal monitors the data packet sent by the base station in subframe 1, it replies an ACK / NACK message to the base station in subframe 5, and the base station demodulates and processe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04L1/18
Inventor 王宇马馨睿肖业平
Owner 航广卫星网络有限责任公司