Method for sending acknowledgement information and user terminal

A technology for confirming information and sending methods, which is applied in wireless communication, electrical components, etc., and can solve problems such as inability to feed back multiple confirmation information

Active Publication Date: 2011-01-19
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 method for sending acknowledgment information and a user terminal to solve the defect that multiple acknowledgment information cannot be fed back in one uplink subframe in a carrier aggregation scenario

Method used

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  • Method for sending acknowledgement information and user terminal
  • Method for sending acknowledgement information and user terminal

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0157] Example 1: One uplink subframe corresponds to X downlink subframes, Y cells are configured on each downlink subframe, and the number of transmission blocks transmitted by cell j configured on downlink subframe i is Z i，j , where X can be 1, 2, 3, 4, 9, Y can be 1, 2, 3, 4, 5, Z i，j Can be 1, 2;

[0158] When X=2, Y=5, it is assumed that the base station schedules 3 PDSCHs with PDCCHs on the first downlink subframe, and schedules 2 PDSCHs with PDCCHs on the second downlink subframe;

[0159] Then, 5 feedback bits may be allocated to each downlink subframe;

[0160] When the UE does not detect a PDSCH with a PDCCH on the second downlink subframe, the corresponding feedback bits are NACK, NACK, NACK, NACK, NACK;

[0161] When the UE determines that the number of PDSCHs sent by the base station to itself in the first downlink subframe is 3 based on the detection of DAI in the first downlink subframe, if the number of PDSCHs with PDCCH detected in the first downlink subframe...

example 2

[0162] Example 2: One uplink subframe corresponds to X downlink subframes, Y cells are configured on each downlink subframe, and the number of transmission blocks transmitted by cell j configured on downlink subframe i is Z i，j , where X can be 1, 2, 3, 4, 9, Y can be 1, 2, 3, 4, 5, Z i，j Can be 1, 2;

[0163] When X=3, Y=5, it is assumed that the base station schedules 3 PDSCHs with PDCCHs in the first downlink subframe, schedules 2 PDSCHs with PDCCHs in the second downlink subframe, and schedules 2 PDSCHs with PDCCHs in the third downlink subframe. 5 PDSCHs with PDCCHs are scheduled on each downlink subframe;

[0164] Allocating four feedback bits for the third downlink subframe and allocating three feedback bits for each of the remaining subframes;

[0165] When the UE does not detect a PDSCH with a PDCCH on the second downlink subframe, the corresponding feedback bits are NACK, NACK, NACK;

[0166] When the UE determines that the number of PDSCHs sent by the base statio...

example 3

[0168] Example 3: An uplink subframe corresponds to a configuration window of X downlink subframes, Y cells are configured on each downlink subframe, and the number of transmission blocks transmitted by cell j configured on downlink subframe i is Z i，j , where X can be 1, 2, 3, 4, 9, Y can be 1, 2, 3, 4, 5, Z i，j Can be 1, 2;

[0169] When X=4, Y=5, it is assumed that the base station schedules 5 PDSCHs with PDCCHs in the first downlink subframe, schedules 2 PDSCHs with PDCCHs in the second downlink subframe, and schedules 2 PDSCHs with PDCCHs in the third downlink subframe. 5 PDSCHs with PDCCHs are scheduled on the first downlink subframe, and 5 PDSCHs with PDCCHs are scheduled on the fourth downlink subframe;

[0170] Three feedback bits may be allocated to the third and fourth downlink subframes respectively, and two feedback bits may be allocated to the remaining subframes.

[0171] When the UE does not detect a PDSCH with a PDCCH in the third downlink subframe, the corr...

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Abstract

The invention discloses a method for sending acknowledgement information and a user terminal, which are applied to a system adopting carrier aggregation technology. The user terminal comprises a bit allocation module, an information processing module and an information sending module. The method comprises the following steps that: user equipment (UE) allocates a bit number occupied by the acknowledgement information of a downlink sub-frame to each downlink sub-frame in a configuration window corresponding to an uplink sub-frame respectively according to the uplink/downlink configuration information, the total bit number occupied by the acknowledgement information of all downlink sub-frames is a positive integer k; the UE performs AND operation on the acknowledgement information of each downlink sub-frame respectively according to the reception condition of a physical downlink shared channel (PDSCH) in each downlink sub-frame so as to acquire the acknowledgement information of each downlink sub-frame, wherein the bit number occupied by the acknowledgement information of each downlink sub-frame is the bit number allocated by the UE; and the feedback acknowledgement information of the downlink sub-frame is the feedback information of the PDSCH received in the high downlink sub-frame. The method and the user terminal guarantee the throughput of the system to the largest degree.

Description

technical field [0001] The invention relates to the field of mobile wireless communication, in particular to a method for sending confirmation information and a user terminal. Background technique [0002] The radio frame (RadioFrame) in the Long Term Evolution (abbreviated as LTE) system includes a frequency division duplex (Frequency Division Duplex, abbreviated as FDD) mode and a time division duplex (Time Division Duplex, abbreviated as TDD) mode frame structure. 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. Such as figure 2 As shown, in the frame structure of TDD mode, a 10ms wireless frame is composed of two halfframes (halfframe) with a length of 5ms, and a halfframe includes 5 subframes with a length of 1ms, and the subframe i is defined as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
Inventor 戴博任璐梁春丽杨维维夏树强
Owner ZTE CORP
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