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Method and apparatus for indicating ACK/NACK transmission by LTE-TDD system

A technology for indicating and indicating information, applied in the LTE field of mobile communication

Active Publication Date: 2012-01-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a method and device for instructing ACK / NACK transmission in an LTE-TDD system to solve the problem that the prior art cannot perform uplink ACK transmission under the condition of guaranteeing the characteristics of a single carrier

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  • Method and apparatus for indicating ACK/NACK transmission by LTE-TDD system
  • Method and apparatus for indicating ACK/NACK transmission by LTE-TDD system
  • Method and apparatus for indicating ACK/NACK transmission by LTE-TDD system

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Embodiment Construction

[0046] The LTE system determines to support the following two types of frame structures:

[0047] The first type of frame structure is applicable to FDD and TDD systems, and its structure is as follows figure 1 shown.

[0048] The frame length of the first type of frame is 10 ms, consisting of 20 time slots, each time slot length is 0.5 ms, marked from 0 to 19, two consecutive time slots are defined as a subframe, and subframe i consists of time slots Slot 2i and time slot 2i+1, where i=0, 1, . . . , 9.

[0049] For the FDD system, within every 10 ms, since the uplink and downlink are separated in the frequency domain, 10 subframes are available for uplink and downlink.

[0050] For the TDD system, 10 subframes are available for uplink and downlink every 10 ms, and subframe 0 and subframe 5 are always allocated for downlink transmission.

[0051] figure 2 A schematic diagram of the second type of frame structure is shown.

[0052] The frame length of the second type of fra...

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Abstract

The invention discloses a method for indicating ACK / NACK transmission for an LTE-TDD system. The method comprises the following steps: a network side makes statistics on distributing condition of downlink service data of each user equipment; physical resource for loading ACK / NACK is determined, after determining that downlink service data of certain user equipment is scheduled by a plurality of times in a preset related period; indication information is transmitted to indicate the user equipment to transmit ACK / NACK of the downlink data on physical resource. The invention simultaneously discloses a device for indicating ACK / NACK transmission for the LTE-TDD system. The invention can uniformly arrange the physical resource in advance under the circumstance that the user equipment needs to simultaneously feed back a plurality of ACK / NACKs so as to ensure that a plurality of ACK / NACKs of the user equipment can be transmitted on the same physical resource, thereby ensuring the characteristic of single carrier.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 200710164204.9 and the invention title "Method and device for indicating ACK / NACK transmission in LTE-TDD system" submitted to the China Patent Office on September 30, 2007, the entire content of which is passed References are incorporated in this application. technical field [0002] The present invention relates to the technical field of LTE (Long Time Evolution, long-term evolution) of mobile communication, more specifically, relate to a kind of LTE-TDD (Time Division Duplex, time division duplex) system instruction ACK (Acknowledgment, confirm team information) / NACK (Non-Acknowledgment, unacknowledged information) transmission method and device. Background technique [0003] The third-generation communication system 3G adopts CDMA (Code Division Multiple Access) to support multimedia services, so that it can have high competitiveness in the next few years, but in ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18H04L5/26
Inventor 肖国军索士强
Owner DATANG MOBILE COMM EQUIP CO LTD