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A method and system for transmitting a transport block on a downlink control channel

A control channel, physical downlink control technology, applied in transmission systems, digital transmission systems, error prevention and other directions, can solve problems such as wasted computing power, terminals do not know the transmission status of base stations, etc., to achieve the effect of improving resource utilization

Active Publication Date: 2019-08-16
仲川
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0037] At the same time, since the terminal does not know the transmission status of the base station, when the base station side does not transmit DCI information on the PDCCH candidate, the terminal still needs to decode the corresponding PDCCH to detect the DCI information, resulting in a waste of computing power

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  • A method and system for transmitting a transport block on a downlink control channel
  • A method and system for transmitting a transport block on a downlink control channel
  • A method and system for transmitting a transport block on a downlink control channel

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Embodiment Construction

[0069] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0070] Figure 4 It is a flow chart of a method for transmitting a small-size transport block with a PDCCH in the present invention; as Figure 4 said,

[0071] Step 401, the base station selects a free transport block Cell Radio Network Temporary Indicator (C-RNTI) as a TBC-RNTI for the terminal, and configures it for the terminal, and the terminal stores the TBC-RNTI.

[0072] Step 402, setting a threshold on the base station, and the base station compares the transport block (TB) to be sent with the threshold; if it is greater than the threshold, go to step 404, otherwise go to step 403.

[0073] For the threshold value, if the base station limits that the transport block TB can only be mapped into one DCI as a whole, its maximum value is det...

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Abstract

The present invention discloses a method and system for transmitting a transmission block in a downlink control channel. The method comprises the steps that: a base station selects an idle cell radio network temporary indicator and configures the idle cell radio network temporary indicator to a terminal as TBC-RNTI; the base station compares a transmission block to be sent and a preset threshold; if the transmission block size is not larger than a threshold value, the transmission block is configured into downlink control information (DCI) according to a predetermined rule, a transmission block mapping DCI (TB-DCI) is formed, a CRC cyclic check code is generated, and a TBC-RNTI is used to carry out the scrambling of the cyclic check code; the check codes of TB-DCI and TBC-RNTI scrambling are subjected to encoded modulation mapping to a physical downlink control channel (PDCCH) according to a present technical DCI processing mode; the terminal receives and decodes the PDCCH, and if the TBC-RNTI is detected, the decoded data forms a transmission block according to a predetermined rule, and the transmission block is submitted to an upper layer. The PDCCH detection ability of the terminal is effectively utilized, and the resource utilization rate of the system is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and a system for transmitting data transmission blocks using an LTE physical downlink control channel. Background technique [0002] The LTE (Long Term Evolution) project is an evolution of 3G, which improves and enhances the air access technology of 3G. Using OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Out-put) as the only standards for its wireless network evolution. Under the 20MHz spectrum bandwidth, it can provide the peak rate of downlink 100Mbit / s and uplink 50Mbit / s. It improves the performance of cell edge users, increases cell capacity, and reduces system delay. The LTE system described in the present invention includes its subsequent evolution version such as LTE-A. [0003] The downlink direction of LTE adopts Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing), wherein one ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 仲川
Owner 仲川