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Method and device for transmitting ACK/NACK signal

A signal and physical channel technology, applied in the field of long-term evolution, can solve the problems of waste of time-frequency resources, no need to transmit data, and low utilization rate of UpPTS resources, so as to increase the use and improve the utilization rate of frequency resources

Active Publication Date: 2012-12-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the evolution scheme of the TDD system, UpPTS is not used to transmit data, and its only purpose is for UE to send UpPCH signals during the random access process, and UpPCH signals occupy very few resources, resulting in very low resource utilization of UpPTS
Similarly, DwPTS is not used to transmit data. Its only purpose is to send the P-SCH signal for downlink synchronization on the network side, and the P-SCH signal only occupies a fixed 1.25MHz bandwidth. For systems with a bandwidth greater than 1.25MHz, the rest Time-frequency resources are wasted

Method used

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  • Method and device for transmitting ACK/NACK signal
  • Method and device for transmitting ACK/NACK signal
  • Method and device for transmitting ACK/NACK signal

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Experimental program
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Embodiment Construction

[0034] figure 2 It is a schematic diagram of sending an UpPCH signal in an UpPTS in a long-term evolution scheme, and the shaded part in the figure indicates the frequency resource used for sending the UpPCH signal. It can be seen that if the UpPTS is only used to send the UpPCH signal, a large amount of frequency resources will be wasted in vain.

[0035] In the following, the method for transmitting an uplink ACK / NACK signal in the UpPTS provided by the present invention will be further specifically described in conjunction with Embodiment 1, image 3 It shows the process of transmitting uplink ACK / NACK signal in UpPTS.

[0036] In step 31, the frequency resources used for transmitting uplink ACK / NACK signals in the UpPTS are determined.

[0037] Since the frequency resources used to transmit UpPCH in UpPTS are limited, when the system bandwidth is large, there will be a large amount of remaining frequency resources available for transmission of uplink ACK / NACK signals. ...

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Abstract

The invention discloses a method for ACK / NACK transmission, comprising determining frequency resource used for ACK / NACK signal transmission in the pilot timeslot; notifying configuration information of resource used for ACK / NACK signal transmission to user equipments UE in the cell; transmitting ACK / NACK signal on frequency resource determined in the pilot timeslot. Comparing with technique in prior art, transmitting ACK / NACK signal in pilot timeslot not only enhances utilization of frequency resource of pilot timeslot, but also increases use of the pilot timeslot, having no influence to datatransmission rate of conventional timeslots. Furthermore, the method for transmitting ACK / NACK signal in pilot timeslot can be combined with the ACK / NACK signal transmission method in prior art, so as to reach a better embodiment effect. The invention further discloses an apparatus for ACK / NACK signal transmission.

Description

technical field [0001] The present invention relates to the long-term evolution technology of the TDD (Time Division Duplex) system, in particular to a method and device for transmitting ACK / NACK signals. Background technique [0002] At present, the 3GPP (Third Generation Partnership Project) organization has embarked on a long-term evolution of its existing system specifications. Among the many physical layer transmission technologies, OFDM (Orthogonal Frequency Division Multiplexing) technology has become the first choice in all downlink solutions due to its high spectrum utilization and low processing complexity. [0003] OFDM technology is essentially a multi-carrier modulation communication technology. Its basic principle is to decompose a high-rate data stream into several low-rate data streams and transmit them simultaneously on a group of mutually orthogonal sub-carriers. OFDM technology has performance advantages in many aspects due to its multi-carrier nature. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/16
Inventor 蒋海林房家奕鲍炜毕海洲
Owner DATANG MOBILE COMM EQUIP CO LTD