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Configuration method and device for LTE TDD system ascending HARQ course

A configuration method and process technology, applied in the communication field, can solve the problem that mobile terminals cannot effectively support multiple processes, etc.

Active Publication Date: 2008-07-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a configuration method and device for an uplink HARQ process in an LTE TDD system, which can solve the problem that a mobile terminal cannot effectively support multiple processes in the prior art

Method used

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  • Configuration method and device for LTE TDD system ascending HARQ course
  • Configuration method and device for LTE TDD system ascending HARQ course
  • Configuration method and device for LTE TDD system ascending HARQ course

Examples

Experimental program
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Embodiment 1

[0062] 5ms conversion period, the ratio of downlink and uplink subframes is 2:3 (note that 10ms contains two down / up conversion points, if subframes 1 and 6 are not considered as downlink subframes, this ratio should be 1:3) When the process is configured, subframes 2, 3, 4, 7, 8, and 9 are uplink subframes for sending uplink data; DwPTS of subframes 1 and 6 and subframes 0 and 5 can send downlink ACK / NACK signaling. as shown in picture 2.

[0063] The total number of processes is 7

[0064] Process A and process D are sent on subframe 2 and subframe 7 respectively; the ACK / NACK signaling fed back by the base station is sent on the downlink subframe, and there are 3 There is an interval of 9 subframes between the uplink subframe where the retransmitted data packet is located and the subframe where the previously transmitted data packet is located. The RTT of this process is 10ms;

[0065] Process B and process E are sent on subframe 3 and subframe 8 respectively; the ...

Embodiment 2

[0069] 5ms conversion period, the ratio of downlink and uplink subframes is 3:2 (note that 10ms contains two down / up conversion points, if subframes 1 and 6 are not considered as downlink subframes, this ratio should be 2:2) When the process is configured, subframes 2, 3, 7, and 8 are uplink subframes for sending uplink data; DwPTS of subframes 1 and 6 and subframes 0, 4, 5, and 9 can send downlink ACK / NACK signaling. As shown in Figure 3.

[0070] The total number of processes is 4;

[0071] Process A and process C are sent on subframe 2 and subframe 7 respectively; the ACK / NACK signaling fed back by the base station is sent on the downlink subframe, and there are 3 subframes between the downlink subframe and the uplink subframe corresponding to the ACK / NACK The frame interval; there is an interval of 9 subframes between the uplink subframe where the retransmitted data packet is located and the subframe where the previously transmitted data packet is located. The RTT of...

Embodiment 3

[0074] 5ms conversion period, the ratio of downlink and uplink subframes is 4:1 (note that 10ms contains two down / up conversion points, if subframes 1 and 6 are not considered as downlink subframes, this ratio should be 3:1) When the process is configured, subframes 2 and 7 are uplink subframes for sending uplink data; DwPTS of subframes 1 and 6 and subframes 0, 3, 4, 5, 8, and 9 can send downlink ACK / NACK signaling. As shown in Figure 4.

[0075] The total number of processes is 2;

[0076] Process A and process B are sent on subframe 2 and subframe 7 respectively; the ACK / NACK signaling fed back by the base station is sent on the downlink subframe, and there are 3 subframes between the downlink subframe and the uplink subframe corresponding to the ACK / NACK The frame interval; there is an interval of 9 subframes between the uplink subframe where the retransmitted data packet is located and the subframe where the previously transmitted data packet is located. The RTT of ...

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Abstract

The invention provides a configuration method and a configuration device for an uplink HARQ process of an LTE TDD system. The configuration method comprises the following steps: the time Tue needed by a mobile terminal from receiving a base station signaling to sending uplink data, the time Tnb needed by a base station from receiving the uplink data to sending an ACK / NACK signaling, and an uplink / downlink conversion period are confirmed; the proportion of downlink / uplink subframes and the uplink / downlink ability of the subframes are confirmed; and a sending subframe of an uplink mixed automatic retransmitting request process of the TE TDD system is configured according to the confirmed conditions. The invention reasonably configures the uplink HARQ process of the LTE TDD system, thereby ensuring that the mobile terminal can effectively support a plurality of processes.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for configuring an uplink HARQ process in an LTE TDD system. Background technique [0002] The frame structure of the TDD (Time Division Duplex, time division duplex) mode of the LTE (Long Term Evolution, long term evolution) system is shown in FIG. 1 . In this frame structure, a 10ms (307200Ts, 1ms=30720Ts) radio frame is divided into two 5ms half-frames, each half-frame contains 8 time slots with a length of 0.5ms (15360Ts) and 3 special time slots : Downlink Pilot Time Slot DwPTS (Downlink Pilot Time Slot), Guard Period GP (Guard Period) and Uplink Pilot Time Slot UpPTS (Uplink Pilot Time Slot). The length of each of these three special time slots can be configured, but the total length is 1ms (30720Ts). Every two time slots of 0.5 ms form a subframe with a length of 1 ms, numbered from subframe 0 to subframe 9, in which subframe 1 and subframe 6 con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04Q7/22
Inventor 郝鹏郁光辉夏树强戴博梁春丽
Owner ZTE CORP