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Method, device and system for feeding back and receiving response information

A technology of response information and feedback bits, applied in the field of communication, can solve problems such as adverse effects on overall system performance, impact on PUSCH data transmission, and impact on ACK/NAK accuracy

Active Publication Date: 2012-03-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Therefore, in the 3GPP LTE-A system, if the number of ACK / NAK that the UE needs to feed back is greater than 4, then the relevant regulations of the 3GPP LTE system are no longer applicable to the 3GPP LTE-A system, that is, the UE can no longer pass the ACK / NAK carried in the UL grant. 2-bit DAI to determine the number of REs occupied by the feedback ACK / NAK on the PUSCH
However, if an appropriate number of REs is not used to feed back ACK / NAK, it will have a negative impact on the overall performance of the system.
For example, if the number of REs set is too small, it will affect the accuracy of the feedback ACK / NAK, and if the number of REs set is too large, it will affect the data transmission on PUSCH

Method used

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  • Method, device and system for feeding back and receiving response information
  • Method, device and system for feeding back and receiving response information
  • Method, device and system for feeding back and receiving response information

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Embodiment Construction

[0051] In the LTE-A system, in order to enable the UE to use an appropriate number of REs for ACK / NAK feedback, in the embodiment of the present invention, when performing ACK / NAK feedback, the terminal (UE) generates ACK / NAK feedback bits, where P takes A natural number, and P is a fixed preset parameter, or an agreed preset parameter, or a preset parameter configured by a high layer; then, the UE determines the feedback resource parameter Should is a positive number, and according to Determine the number of resource elements (REs) occupied by the P ACK / NAK feedback bits when transmitted on the Physical Uplink Shared Channel (PUSCH), and send the P ACK / NAK feedback bits on the PUSCH based on the number of REs. Correspondingly, on the network side, the base station determines that the UE generates P ACK / NAK feedback bits, where P is a natural number, and P is a fixed preset parameter, or an agreed preset parameter, or a preset parameter configured by a high layer ; Next, ...

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Abstract

The invention discloses a method, device and system for feeding back and receiving response information, wherein UE (User Equipment) is used to perform ACK / NAK (Acknowledgement / Negative Acknowledgement) feedback by adopting a proper number of RE (Resource Element). In the method, an ACK / NAK feedback mechanism is formulated specific to multi-carrier aggregation in the LTE-A (Long Term Evolution-Advanced) system, the UE can determine the number of the RE required for performing the ACK / NAK feedback according to feedback resource parameters, so that the UE can adopt a proper number of the RE to transmit ACK / NAK feedback bit, thus, the accuracy of the ACK / NAK feedback bit is ensured, and data uploaded onto a PUSCH (Physical Uplink Shared Channel) cannot be influenced; correspondingly, a base station can also be used for acquiring the number of the RE occupied by the UE when the UE transmits the ACK / NAK feedback bit by adopting the same manner, therefore, the ACK / NAK feedback bit transmitted from the PUSCH to the UE can be accurately received; and thus, the system performance is effectively improved, and the service reliability of the system is promoted.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method, device and system for feeding back response information and receiving the same. Background technique [0002] According to the 3GPP agreement, in the LTE system, the terminal (UE) needs to feed back a response message (ie ACK / NAK) to the base station for each received transport block (TB) to inform the base station whether it is correct or not After receiving the TB, in the LTE system, the ACK / NAK can be transmitted on either the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH). [0003] For LTE with Time Division Duplex (TDD) technology, the UE can transmit up to 4 ACK / NAKs. When multiple ACK / NAKs are transmitted on the PUSCH, if the PUSCH is indicated by the uplink scheduling (UL grant), the number of ACK / NAKs fed back is notified by the Downlink Assignment Index (DAI) in the UL grant; if the PUSCH If it is not indicated by the UL gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04W28/16
Inventor 沈祖康林亚男潘学明高雪娟
Owner DATANG MOBILE COMM EQUIP CO LTD
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