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Method and system for sending acknowledgement character message in time division duplex system

A time-division duplex system and a technology for answering messages, applied in the field of communication, can solve problems such as no corresponding solutions, and achieve the effect of simple implementation and strong applicability

Active Publication Date: 2011-08-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the terminal only receives a PDSCH without a PDCCH (that is, SPS (Semi-Persistent Schedule, semi-persistent scheduling) PDSCH) and a PDSCH corresponding to a PDCCH with a DAI value equal to 1, how does the terminal feed back its corresponding HARQ-ACK No corresponding solution yet

Method used

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  • Method and system for sending acknowledgement character message in time division duplex system
  • Method and system for sending acknowledgement character message in time division duplex system
  • Method and system for sending acknowledgement character message in time division duplex system

Examples

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application example 1

[0118] Such as image 3 As shown, the base station configures two serving cells for a terminal: a primary serving cell and a secondary serving cell, and configures the terminal to use PUCCH format 3 to feed back HARQ-ACK response messages.

[0119] Assume that within a certain binding window, the terminal only receives a PDSCH without a PDCCH from the primary serving cell and a PDSCH corresponding to a PDCCH with a DAI value equal to 1, and assume that the TPC value on the PDCCH with a DAI value equal to 1 is "01 ".

[0120] It is assumed that the corresponding relationship between the value of ARI and the resource of PUCCH format 3 is shown in Table 1.

[0121] Table 1 Correspondence table between ARI values ​​and resources of PUCCH format 3

[0122]

[0123]

[0124]When the terminal uses the above method 1-1 to feed back the HARQ-ACK response message, in method 1-1, the TPC of the PDCCH whose DAI value is equal to 1 will be reused as ARI, that is, the terminal The ...

application example 2

[0126] Such as Figure 4 As shown, the base station configures a primary serving cell for a certain terminal, and configures the terminal to use PUCCH format 3 to feed back a HARQ-ACK response message.

[0127] Assume that within a certain binding window, the terminal only receives a PDSCH without a PDCCH from the primary serving cell and a PDSCH corresponding to a PDCCH with a DAI value equal to 1, and assume that the TPC value on the PDCCH with a DAI value equal to 1 is "01 ".

[0128] It is assumed that the corresponding relationship between the value of ARI and the resource of PUCCH format 3 is shown in Table 1.

[0129] When the terminal uses the above method 1-1 to feed back the HARQ-ACK response message, in method 1-1, the TPC of the PDCCH whose DAI value is equal to 1 will be reused as ARI, that is, the terminal The TPC corresponding to the PDCCH and the PUCCH format 3 resources configured by the higher layer determine the PUCCH format 3 resources. It can be seen fr...

application example 3

[0133] The base station configures a terminal to use PUCCH format 3 to feed back a HARQ-ACK response message.

[0134] Assume that within a certain binding window, the terminal only receives a PDSCH without a PDCCH and a PDCCH with a DAI value equal to 1 from the primary serving cell, and the corresponding relationship between the value of ARI and the resource of PUCCH format 3 is shown in Table 1.

[0135] When the terminal uses the above method 1-2 to feed back the HARQ-ACK response message, the terminal determines the PUCCH format 3 resource according to the default ARI value and the PUCCH format 3 resource configured by the upper layer. Assuming that the default ARI value is "00", then According to Table 1, it can be seen that the terminal will use the PUCCH format 3 resource configured by the first higher layer to feed back the corresponding HARQ-ACK response message on the PUCCH format 3.

[0136] Considering that the terminal may have DTX (Discontinuous Transmission, di...

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Abstract

The invention provides a method and system for sending an acknowledgement character message in a time division duplex system, which are suitable for being configured in a terminal for feeding back a hybrid automatic retransmission request acknowledgement character message (HARQ-ACK) by adopting a physical uplink control channel (PUCCH). The method comprises the steps of: receiving a physical downlink sharing channel (PDSCH) from a service cell in a binding window; when one PDSCH without the PDCCH and one PDSCH corresponding to the PDCCH with a downlink allocation index value equal to 1 of a main service cell are received in the binding window, feeding back a corresponding HARQ-ACK according to one of the following modes: feeding back a corresponding HARQ-ACK by adopting a PUCCH format 3, feeding back a corresponding HARQ-ACK by adopting a PUCCH format 1b, and feeding back a corresponding HARQ-ACK by combining a PUCCH format 1b with a channel selection mode. The invention does not influence the traditional protocol.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for sending response messages in a time division duplex system. Background technique [0002] In a Hybrid Automatic Repeat Request (HARQ for short) manner, the codeword sent by the originating end can not only detect errors, but also have certain error correction capabilities. After receiving the codeword, the decoder at the receiving end first checks the error situation. If it is within the error correction capability of the codeword, it will automatically correct the error. If there are too many errors, it exceeds the error correction capability of the codeword, but the error can be detected. Then, the receiving end sends a decision signal to the sending end through the feedback channel, requesting the sending end to resend the information. In an Orthogonal Frequency Division Multiplex (OFDM for short) system, HARQ-ACK (HARQ Acknowledgment, HARQ-ACK response messa...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/18
CPCH04L5/0055H04L1/16H04L1/18H04L1/1861
Inventor 梁春丽戴博喻斌邬华明
Owner ZTE CORP
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