Feedback method of acknowledgment message and terminal thereof

A technology for confirming information and confirming messages

Active Publication Date: 2011-03-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The main purpose of the present invention is to provide a confirmation information feedback method and terminal, so as to at least solve the problem in the above-mentioned related art in the carrier aggregation scenario that the signaling load is too large and even affects normal service transmission due to the doubled increase in the number of feedback confirmation information

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  • Feedback method of acknowledgment message and terminal thereof
  • Feedback method of acknowledgment message and terminal thereof
  • Feedback method of acknowledgment message and terminal thereof

Examples

Experimental program
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Embodiment 1

[0079] This embodiment provides a confirmation information feedback method. This embodiment combines the foregoing embodiments and preferred implementation manners therein. In this embodiment, the feedback method is a frequency-domain bundling manner, which will be described in detail below.

[0080] Frequency domain bundling method

[0081] Step 1: In the carrier aggregation scenario, the UE divides the PDSCH acknowledgment information into M groups.

[0082] Step 2: Each group is mapped into N pieces of information, and the information corresponding to each group is determined according to the DAI, and the UE sends (M×N) pieces of information.

[0083] Wherein, in a configuration window corresponding to an uplink subframe, the DAI includes the downlink subframe i where the DAI is located and the PDSCH allocated to the terminal in all downlink subframes before the downlink subframe i and the total number of PDCCHs released by the SPS, and the downlink subframe The DAI value...

Embodiment 2

[0114] This embodiment provides a confirmation information feedback method. This embodiment combines Embodiment 1 and its preferred implementation modes. In this embodiment, one uplink subframe corresponds to a configuration window of P downlink subframes, the number of serving cells configured by the UE is Q, and the downlink subframe i is configured with The number of transport blocks transmitted by cell j is Z i，j , where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, Z i，j Can be 1, 2.

[0115] When P=4, Q=5, it is assumed that the base station schedules all PDSCHs in the configuration window corresponding to an uplink subframe, Figure 5 is a schematic representation of the total number of DAI according to the embodiment of the present invention Figure 1 ,Such as Figure 5 As shown, the DAI of the corresponding first downlink subframe is 00, indicating that its value is 5, the DAI of the second downlink subframe is 10, indicating that its value is 10, and the DAI of...

Embodiment 6

[0189] This embodiment provides a confirmation information feedback method. This embodiment combines Embodiment 5 and the preferred implementation modes therein. In this implementation, one uplink subframe corresponds to a configuration window of P downlink subframes, and the service configured by the UE The number of cells is Q, and the number of transport blocks transmitted by cell j configured on downlink subframe i is Z i，j , where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, Z i，j Can be 1, 2.

[0190] Wherein, DAI only refers to the number of PDSCHs with PDCCHs.

[0191] When P=4, Q=2, it is assumed that the base station schedules 3 PDSCHs on the primary cell in the configuration window corresponding to an uplink subframe, which are located in the first downlink subframe, the second downlink subframe and the third PDSCH respectively. Downlink subframe, wherein, the PDSCH of the second downlink subframe is a PDSCH without PDCCH; there are 4 PDSCHs scheduled on the se...

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Abstract

The invention discloses a feedback method of an acknowledgment message and a terminal thereof. The method comprises the following steps: a terminal divides the acknowledgment message of a physical downlink shared channel (PDSH) which corresponds to an up subframe into M groups of predetermined values; the terminal respectively maps the acknowledgment message which corresponds to each group in the M groups of predetermined values to be the feedback message with predetermined amount according to down allocating information (DAI), wherein the acknowledgment message comprises the acknowledgment message (ACK) or the un-acknowledgment message (UACK); and the terminal feeds back the feedback message on the up subframe. The invention improves the feedback efficiency of the acknowledgment message.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a confirmation information feedback method and a terminal. Background technique [0002] The radio frame (Radio Frame) in the long term evolution (Long Term Evolution, referred to as LTE) system includes frequency division duplex (Frequency Division Duplex, referred to as FDD) mode and time division duplex (Time Division Duplex, referred to as TDD) mode frame structure. figure 1 is a schematic diagram of a frame structure in an FDD system according to related technologies, such as figure 1 As shown, in the frame structure of FDD mode, a wireless frame of 10 milliseconds (ms) is composed of twenty slots (slots) with a length of 0.5 ms and numbered 0 to 19, and slots 2i and 2i+1 A subframe (subframe) i (wherein, 0≤i≤9) with a length of 1 ms. figure 2 is a schematic diagram of a frame structure in a TDD system according to related technologies, such as figure 2 As shown, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16
CPCH04L1/16H04L5/0055H04L1/1861
Inventor 戴博梁春丽任璐杨维维
Owner ZTE CORP
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