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Method for feeding back downlink receiving state

A technology of receiving state and data receiving state, applied in receiver monitoring, connection management, transmission modification based on link quality, etc., can solve problems such as limited uplink coverage, and achieve the effect of improving throughput

Active Publication Date: 2010-01-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] However, the weakness of ACK / NACK multiplexing is that when the number of ACK / NACK bits multiplexed on PUCCH increases, the uplink coverage is limited

Method used

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  • Method for feeding back downlink receiving state
  • Method for feeding back downlink receiving state
  • Method for feeding back downlink receiving state

Examples

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Embodiment Construction

[0039] In order to solve the drawbacks of the traditional technical solutions, the present invention further illustrates a method for feedback of the downlink receiving state according to the present invention through the following specific embodiments. The specific embodiments are described in detail below, but are not intended to limit the present invention.

[0040] The present invention is applicable to the situation that the number of downlink subframes in the DL / UL subframe configuration in the LTE TDD system is more than the number of uplink subframes, that is, the situation that multiple downlink reception states may need to be fed back on one uplink subframe, that is, LTE TDD DL / UL subframe configuration 1-5 (see Table 1).

[0041] First, the system sets a control parameter and carries it in RRC signaling (such as: RRC ConnectionReconfiguration message, RRC Connection Setup message, etc.). When the base station sends downlink data to the terminal, it is used to notify the t...

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Abstract

The invention discloses a method for feeding back a downlink receiving state, which comprises that: a wireless resource control RRC signaling which is sent to a terminal by a base station carries a control parameter, and the control parameter is used for indicating a feedback mode adopted when the terminal feeds back the downlink receiving state; and the terminal feeds back a data receiving state on a physical downlink shared channel PDSCH of a plurality of downlink subframes of the feedback mode to the base station on the same uplink subframe according to the configuration conditions of the current uplink and downlink subframes and an uplink feedback timing relation prescribed by a system and according to the feedback node. The method enables the system to feed back the downlink receiving state through the flexibly-configured proper mode, and any UE in a cell can be configured as an ACK / NACK bundling mode or an ACK / NACK multiplexing mode by the base station.

Description

Technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for feeding back the downlink receiving state. Background technique [0002] figure 1 The frame structure of the TDD (Time Division Duplex) mode of the LTE (Long Term Evolution) system is shown. A 10ms radio frame is divided into two half frames, each half The frame is divided into 10 time slots with a length of 0.5ms, and two time slots form a subframe with a length of 1ms. One half frame contains 5 subframes. In this frame structure, the configuration of subframes has the following characteristics: [0003] (1) Subframe 0 is fixed for downlink; [0004] (2) Subframe 1 (hereinafter referred to as special subframe) contains 3 special time slots, which are DwPTS (Downlink Pilot Time Slot), GP (Guard Period, guard interval) and UpPTS (Uplink Pilot Time Slot). Time Slot, uplink pilot time slot), where: [0005] DwPTS is used in the downlink and can transmit P-SCH (Pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W88/08
CPCH04L1/0025H04L1/1854H04L1/1607H04W28/04H04W24/10H04B17/24H04B17/309H04W76/27
Inventor 喻斌杜忠达
Owner ZTE CORP
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