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A method and device for scheduling retransmission data

A technology for retransmitting data and the number of retransmissions. It is applied in the direction of error prevention/detection, electrical components, and wireless communication using the return channel. Achieve the effect of reducing service transmission delay, improving user perception, and optimizing scheduling methods

Active Publication Date: 2015-09-09
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing scheduling algorithm does not optimize the scheduling of retransmission data according to the characteristics of uplink and downlink subframe configuration 0, and the existing technology cannot achieve the optimum in reducing service transmission delay

Method used

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  • A method and device for scheduling retransmission data
  • A method and device for scheduling retransmission data
  • A method and device for scheduling retransmission data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] refer to figure 1 , shows a flowchart of a method for scheduling retransmission data according to the present invention, and this embodiment may specifically include the following steps:

[0049] S101, judging whether the scheduled subframe n+k and the scheduled subframe n+7 satisfy the condition of multi-frame scheduling, and if so, execute S104 to perform multi-frame scheduling;

[0050] Where n is the sequence number of the scheduling subframe, k is the time delay between the scheduling subframe and the scheduled subframe, and the time delay is in units of subframes.

[0051] The LTE system is divided into FDD system and TDD system. In 3GPP TS 36.211, two wireless frame structures are defined, namely type1 and type2, which are applied to FDD system and TDD system respectively. The type1 frame structure is as follows: figure 2 As shown, the type2 frame structure is as follows image 3 shown.

[0052] For the type2 wireless frame structure of the LTE-TDD system, se...

Embodiment 2

[0092] refer to Figure 5 , shows a flowchart of a method for scheduling retransmission data according to the present invention, and this embodiment may specifically include the following steps:

[0093] S501, judging whether the scheduled subframe n+k and the scheduled subframe n+7 satisfy the condition of multi-frame scheduling, and if so, execute S506 to perform multi-frame scheduling;

[0094] Where n is the sequence number of the scheduling subframe, k is the time delay between the scheduling subframe and the scheduled subframe, and the time delay is in units of subframes, and the value of k is shown in Table 4.

[0095] In this embodiment, the scheduled subframe n+k and the scheduled subframe n+7 can be judged by judging whether completely consistent resources can be found in the scheduled subframe n+k and the scheduled subframe n+7 to carry the data to be retransmitted respectively. Whether subframe n+7 satisfies the condition of multi-frame scheduling. If exactly the...

Embodiment 3

[0164] refer to Figure 7 , is a structural block diagram of an apparatus for scheduling retransmission data in this embodiment. This embodiment specifically includes the following modules:

[0165] The multi-frame scheduling judging module 1001 is used to judge whether the scheduled sub-frame n+k and the scheduled sub-frame n+7 meet the conditions of multi-frame scheduling, and if so, perform multi-frame scheduling;

[0166] Where n is the sequence number of the scheduling subframe, k is the time delay between the scheduling subframe and the scheduled subframe, and the time delay is in subframes, and the value of k is shown in Table 4.

[0167] The first scheduling subframe judging module 1002 is used to judge whether the scheduling subframe n to be scheduled is the first scheduling subframe when the scheduled subframe n+k and the scheduled subframe n+7 do not meet the conditions of multi-frame scheduling frame;

[0168] The above-mentioned first scheduling subframe judgin...

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Abstract

The invention provides a method and device for dispatching retransmission data, which are used for optimizing the dispatching method of the retransmission data to reduce service time delay. The method for dispatching the retransmission data comprises the following steps of: judging whether a dispatched sub-frame n+k and a dispatched sub-frame n+7 meet a multi-frame dispatching condition, if so, performing multi-frame dispatching, and if not, judging whether a dispatching sub-frame n executing the dispatching is a first dispatching sub-frame; and if the dispatching sub-frame n is the first dispatching sub-frame, preferentially dispatching the data to be retransmitted of the dispatched sub-frame n+k, wherein N refers to the sequence number of the dispatching sub-frame, k refers to the time delay of the dispatching sub-frame and the dispatched sub-frame, and the time delay takes the sub-frame as a unit. The method and the device provided by the invention can optimize the dispatching method of the retransmission data and reduces the service transmission time delay of the retransmission data.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for scheduling retransmission data. Background technique [0002] In the field of modern wireless communication, the reliability of data transmission is required to be higher and higher. At present, many systems generally adopt the hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat Request) technology, and adopt the method of multiple retransmissions. [0003] The Long Term Evolution (LTE, Long Term Evolution) system adopts HARQ in uplink, and supports synchronous adaptive HARQ and synchronous non-adaptive HARQ. In the type2 frame structure defined in the LTE protocol, the number of uplink subframes in uplink and downlink subframe configuration 0 (DSUUUDSUUU) is greater than the number of downlink subframes, and one scheduling subframe is supported to deliver one PDCCH and simultaneously schedule two uplink subframes, that is, multiple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04L1/18
Inventor 刘阳
Owner DATANG MOBILE COMM EQUIP CO LTD
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