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Downlink control information sending method, related system and apparatus

A transmission method and a technology for controlling information, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve decoding chain problems, resource waste, poor backward compatibility, etc., to improve LTE system performance and reduce congestion The effect of high probability and good backward compatibility

Active Publication Date: 2009-08-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the performance of the selected CCEs cannot be made similar, the backward compatibility is poor; and, since the dynamic scheduling of component carriers cannot be realized, resources will be wasted when the number of actually scheduled component carriers is less than the number of semi-statically configured component carriers , even greater than the overhead of encoding alone
[0025] Master-slave PDCCH refers to dynamically or semi-statically notifying the DCI format of the slave PDCCH through the information carried in the fixed-format master PDCCH, so as to solve the problem of resource waste caused by the joint coding of the fixed DCI format, but this solution has The decoding chain problem, that is, the performance of the main PDCCH seriously restricts the performance of the overall PDCCH

Method used

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  • Downlink control information sending method, related system and apparatus
  • Downlink control information sending method, related system and apparatus
  • Downlink control information sending method, related system and apparatus

Examples

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specific Embodiment 1

[0062] In this embodiment, in a specific implementation, the network side directly notifies the terminal of the DCI format of the uplink and downlink scheduling information of each component carrier and the encoding method used when each downlink component carrier transmits the DCI format used for the uplink and downlink scheduling information of the terminal. The specific processing process includes the following steps:

[0063] Step 301: The network side determines the DCI format of the uplink and downlink scheduling information of each component carrier. Specifically, the network side determines that the DCI format of the uplink scheduling information of the first component carrier is DCI format 1, the DCI format of the downlink scheduling information is DCI format 1A, and determines that the DCI format of the uplink scheduling information of the second component carrier is DCI format 1A, The DCI format of the downlink scheduling information is DCI format 1, the DCI format ...

specific Embodiment 2

[0073] In this embodiment, in a specific implementation, the network side notifies the terminal of the transmission mode of each component carrier and the encoding method used when each downlink component carrier transmits the DCI format used for the uplink and downlink scheduling information of the terminal. The specific processing process includes the following steps:

[0074] Step 401: The network side also determines the encoding method of the DCI format of the uplink and downlink scheduling information of each component carrier on each component carrier configured for the terminal. Specifically, the network side determines the DCI format for transmitting the uplink and downlink scheduling information of a single component carrier on the first downlink component carrier, the DCI format for jointly encoding the uplink and downlink scheduling information of two component carriers on the second downlink component carrier, and the third A DCI format in which uplink and downlin...

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Abstract

The invention discloses a downlink control information sending method and a related system thereof and a related device thereof. In the technical proposal, a terminal is arranged on at least one component carrier wave of a subframe to receive and transmit data, and a network side uses the set corresponding DCI Format to send the uplink and downlink dispatching information for the terminal on the downlink component carrier wave according to an index of the component carrier wave; a terminal side detects the corresponding DCI Format on the downlink component carrier wave according to the index of the carrier wave, thereby realizing the flexible arrangement of DCI format of the uplink and downlink dispatching information which is sent on the downlink carrier wave component and used for the terminal, achieving better backward compatibility, as well as saving signaling cost and improving the performance of the LTE system within a limitation of a reasonable number of blind tests.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a downlink control information (DCI, Downlink Control Information) sending method and related systems and devices. Background technique [0002] Figure 1A and Figure 1B The frame structures of the Frequency Division Duplex (FDD, Frequency Division Duplex) mode and the Time Division Duplex (TDD, Time Division Duplex) mode in the Long Term Evolution (LTE, Long Term Evolution) system are respectively shown. In the frame structure of FDD mode, such as Figure 1A As shown, a 10ms wireless frame (radio frame) is composed of twenty slots (slots) with a length of 0.5ms and numbered 0-19, and slots 2i and 2i+1 form a subframe (subframe) with a length of 1ms )i. In the frame structure of TDD mode, such as Figure 1B As shown, a 10ms wireless frame consists of two half frames (half frame) with a length of 5ms, and a half frame contains 5 subframes with a length of 1ms; subfr...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04W72/12
Inventor 李卫军戴博郁光辉罗宇民
Owner ZTE CORP
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