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A transmission method and terminal for uplink control signaling

A transmission method and a technology of control signaling, which is applied in the transmission of base stations and uplink control signaling, and in the field of terminals, which can solve the problems of system throughput performance degradation and the inability to judge whether UE has correctly received one or correct reception, so as to achieve guaranteed performance Effect

Active Publication Date: 2016-12-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the UE configured to use channel selection to feed back ACK / NACK, if the current subframe also needs to send SR or CSI, if the TDD method in LTE is used, we can see from Table 1 that when the base station receives When b(0), b(1)=(1, 1), the base station will not be able to judge whether the UE has correctly received 1 or 4 PDSCHs
Therefore, from the perspective of system robustness, the base station will assume that only one PDSCH is received. Therefore, for the scenario where the UE correctly receives 4 PDSCHs, the base station will also retransmit, so the system throughput performance will decrease.

Method used

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  • A transmission method and terminal for uplink control signaling
  • A transmission method and terminal for uplink control signaling
  • A transmission method and terminal for uplink control signaling

Examples

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Embodiment 1

[0052] In a time division duplex (TDD) system, the mode in which the terminal feeds back the ACK / NACK response message is the channel selection mode, and the number of serving cells configured by the terminal is 2. When the ACK / NACK response message and the scheduling request SR are incorrect, only the ACK / NACK response message and SR corresponding to the primary cell are fed back, wherein the ACK / NACK response message corresponding to the primary cell is mapped to 2 according to the binding mode of the channel selection mode bits, M=2;

[0053] The specific binding methods are shown in Table 2, Table 3 and Table 4; HARQ-ACK(0), HARQ-ACK(1), HARQ-ACK(2), HARQ-ACK(3) represent N physical downlink shared channels The correct / wrong ACK / NACK response message of PDSCH is the response message after space binding; DTX indicates that there is no corresponding response message, and any indicates ACK(A) / NACK(N) / DTX(D);

[0054] Table 2 Mapping relationship when the number of downlink sub...

Embodiment 2

[0069] In a time division duplex (TDD) system, the mode in which the terminal feeds back ACK / NACK response messages is the channel selection mode, and the number of serving cells configured by the terminal is 2. When the correct / When the ACK / NACK response message and the channel state information CSI are wrong, the ACK / NACK response message is mapped to 4 bits according to the binding method of the channel selection mode, and each serving cell corresponds to 2 bits, and the mapped 4-bit information is transmitted and CSI information, where M=4;

[0070] Assume that the number of bits that can be transmitted by the physical uplink control channel for transmitting CSI is X, and X can be 11 or 13;

[0071] When the cyclic prefix is ​​a standard cyclic prefix, the 2-bit information corresponding to the primary cell is sent on the second reference signal of each time slot in the physical uplink control channel format 2b after QPSK modulation, and the 2-bit information correspondin...

Embodiment 3

[0075] In a time division duplex (TDD) system, the mode in which the terminal feeds back ACK / NACK response messages is the channel selection mode, and the number of serving cells configured by the terminal is 2. When the correct / When the ACK / NACK response message and the channel state information CSI are wrong, the ACK / NACK response message is mapped to 4 bits according to the binding method of the channel selection mode, and each serving cell corresponds to 2 bits, and the mapped 4-bit information is transmitted and CSI information, where M=4;

[0076] Assume that the number of bits that can be transmitted by the physical uplink control channel for transmitting CSI is X, and X can be 11 or 13;

[0077] When the cyclic prefix is ​​a standard cyclic prefix, the 2-bit information corresponding to the primary cell is mapped to the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped to the fourth last bit of the X bits bi...

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Abstract

The invention discloses a transmission method for uplink control signaling, a terminal and a base station, and relates to the field of digital communication. The transmission method of the uplink control signaling disclosed by the present invention includes: in a time division duplex (TDD) system, the terminal according to the correct / wrong ACK / NACK response message and other uplink control information of the N physical downlink shared channels PDSCH to be fed back , and the set mapping relationship maps the ACK / NACK response message to M bits of information, and sends the M bits of information and other uplink control information on the physical uplink control channel agreed with the base station, wherein the The mode in which the terminal feeds back an ACK / NACK response message is a channel selection mode. The present invention provides an uplink control signaling transmission method and terminal, which effectively solves the problem of simultaneous transmission of response messages, scheduling requests and channel state information of multiple downlink component carriers, and ensures system performance.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a transmission technology of a terminal, a base station and an uplink control signaling in a multi-carrier system with a large bandwidth. Background technique [0002] The rapid development of digital communication systems has put forward higher requirements for the reliability of data communication. However, in harsh channels, especially in high data rate or high-speed mobile environments, multipath interference and Doppler frequency shift are seriously affected. affect system performance. Therefore, the effective error control technology, especially the Hybrid Automatic Repeat Request (HARQ) technology, has become a research hotspot in the communication field. [0003] In the downlink HARQ of the Long Term Evolution (LTE: Long Term Evolution), the ACK / NACK (ACK / NACK: Acknowledgement / Negative Acknowledgement) response message of the Physical Downlink Shared Channel (PDSCH: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18
Inventor 戴博梁春丽任璐杨维维
Owner ZTE CORP
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