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Method and device for adjusting maximum repeat times of hybrid automatic repeat request (HARQ) and base station

A technology of maximum retransmission times and hybrid automatic retransmission, applied in the field of communication applications, can solve the problems of low resource utilization, packet loss, redundant scheduling times, etc., to reduce the number of resource scheduling times, reduce the data packet loss rate, improve the The effect of resource utilization

Inactive Publication Date: 2017-10-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a method, device and base station for adjusting the maximum number of retransmissions of a hybrid automatic repeat request to solve the problem when different users use the same maximum number of HARQ retransmissions for data transmission. , which can easily lead to packet loss, redundant scheduling times, and low resource utilization

Method used

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  • Method and device for adjusting maximum repeat times of hybrid automatic repeat request (HARQ) and base station
  • Method and device for adjusting maximum repeat times of hybrid automatic repeat request (HARQ) and base station
  • Method and device for adjusting maximum repeat times of hybrid automatic repeat request (HARQ) and base station

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no. 1 example

[0054] Such as figure 1 As shown, the method for adjusting the maximum number of retransmissions of the hybrid automatic repeat request in the embodiment of the present invention includes:

[0055] Step 11: Obtain the HARQ transmission statistical information of the user wireless transmission channel under the current HARQ maximum retransmission times, the HARQ transmission statistical information includes: the number of data packets failed to be transmitted by the user wireless transmission channel and the number of HARQ retransmissions used when each data packet is successfully transmitted.

[0056] In a specific embodiment of the present invention, the sending end needs the receiving end to feed back a confirmation message to indicate whether the sent data packet is correctly received by the receiving end. If the confirmation message is an acknowledgment ACK, it means that the data packet has been correctly received by the receiver; if the confirmation message is a negativ...

no. 2 example

[0062] Such as figure 2 As shown, the method for adjusting the maximum number of retransmissions of the hybrid automatic repeat request in the embodiment of the present invention includes:

[0063] Step 21: Obtain the HARQ transmission statistical information of the user wireless transmission channel under the current HARQ maximum retransmission times, the HARQ transmission statistical information includes: the number of data packets failed to be transmitted by the user wireless transmission channel and the number of HARQ retransmissions used when each data packet is successfully transmitted.

[0064] Step 22: Obtain the packet loss rate of the user wireless transmission channel according to the ratio of the number of data packets failed to be transmitted by the user wireless transmission channel to the total number of transmission data packets within the first predetermined time period.

[0065] Wherein, the total number of transmitted data packets includes the number of da...

no. 3 example

[0128] Such as Image 6 As shown, the embodiment of the present invention also provides a device for adjusting the maximum number of retransmissions of a hybrid automatic repeat request, including:

[0129] The first acquiring module 61 is configured to acquire the HARQ transmission statistical information of the user wireless transmission channel under the current HARQ maximum retransmission times, and the HARQ transmission statistical information includes: the transmission failure of the user wireless transmission channel The number of data packets and the number of HARQ retransmissions used when each data packet is successfully transmitted;

[0130] An update module 62, configured to update the HARQ maximum retransmission times according to the HARQ transmission statistics information.

[0131] In the device for adjusting the maximum number of retransmissions of a hybrid automatic repeat request according to an embodiment of the present invention, the update module 62 incl...

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Abstract

The invention provides a method and a device for adjusting the maximum repeat times of a hybrid automatic repeat request (HARQ) and a base station, so as to solve the problems that when different users use the same HARQ maximum repeat times for transmission, packet loss is likely to be caused, redundancy of the scheduling times happens and the resource utilization rate is low. The method comprises steps: under the current HARQ maximum repeat times, HARQ transmission statistics information for a wireless transmission channel of a user is acquired, wherein the HARQ transmission statistics information comprises the number of data packets with failed transmission by the wireless transmission channel of the user and the HARQ repeat times used in the case of successful transmission of each data packet; and according to the HARQ transmission statistics information, the HARQ maximum repeat times are updated. According to the number of data packets with failed transmission by the wireless transmission channel of the user and the HARQ repeat times used in the case of successful transmission of each data packet, the HARQ maximum repeat times are adjusted, and on the premise of reducing the data packet loss rate, the resource utilization rate is improved.

Description

technical field [0001] The present invention relates to the technical field of communication applications, in particular to a method, a device and a base station for adjusting the maximum number of retransmissions of a hybrid automatic repeat request. Background technique [0002] Hybrid Automatic Repeat Request (HARQ) is an error control technology jointly used by Automatic Repeat Request (ARQ) and Forward Error Correction (FEC). Its purpose is to ensure the correct transmission of data packets and improve the reliability of the wireless communication system through the gain generated by the retransmission function and time diversity. [0003] After the system uses HARQ, the sending end needs the receiving end to feed back an acknowledgment message to indicate whether the sent data packet is correctly received by the receiving end. If the confirmation message is a positive response ACK (the uplink indication is CRC (Cyclic Redundancy Check, Cyclic Redundancy Check) OK, her...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L12/24
CPCH04L1/1812H04L1/1825H04L41/0813H04L41/0816
Inventor 杨佩武建超于剑李小海王俊勇
Owner ZTE CORP
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