Method for transmitting control information, method and device for receiving control information

A technology for controlling information and transmission control, applied in the direction of transmission system, digital transmission system, forward error control, etc., which can solve the problems of inability to realize control and indistinguishability

Active Publication Date: 2011-05-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In the process of realizing the present invention, the inventor found that the prior art has at least the following defects: the LTE 8 system uses a C-RNTI scrambling method to indicate a certain Which UE is the PD

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  • Method for transmitting control information, method and device for receiving control information
  • Method for transmitting control information, method and device for receiving control information
  • Method for transmitting control information, method and device for receiving control information

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Embodiment Construction

[0041] Figure 4 It is a flowchart of a method for transmitting control information provided by an embodiment of the present invention. The method includes:

[0042] Step 41, using different scrambling information to scramble the CRC bits of different carriers; the CRC bits of different carriers are obtained by CRCing the control information of different carriers;

[0043] Step 42. Send the control information and the scrambled CRC bits.

[0044] This embodiment uses different scrambling information to scramble the CRC bits of different carriers, so that the scrambling information corresponds to the carrier one by one, and realizes the distinction between different carriers of the same device, so that the UE side can obtain the information of different carriers of the device through one PDCCH. The control information realizes the control of multiple downlink or uplink carriers on one downlink carrier PDCCH, maintains backward compatibility to the greatest extent, and does not ...

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Abstract

The invention relates to a method for transmitting control information, a method and device for receiving control information. The method for transmitting control information comprises the steps of: scrambling cyclic redundancy check (CRC) bits of different carriers by adopting different kinds of scrambling information, wherein the cyclic redundancy check bits of different carriers are obtained through carrying out cyclic redundancy check on control information of the different carriers; and sending the control information and the scrambled cyclic redundancy check bits. The CRC bits of the different carriers are scrambled by different kinds of scrambling information to ensure that the scrambling information corresponds to the carriers one by one, thus the different carriers of the same device are distinguished to ensure that UE (User Equipment) side can obtain the control information of different carriers of the device through a PDCCH (Packet Dedicated Control Channel), so that a plurality of downlink or uplink carriers are controlled by one downlink carrier PDCCH, and the backward compatibility is maximally maintained without remarkably increasing the processing complexity of the UE.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for transmitting control information, a method and equipment for receiving control information. Background technique [0002] The 3rd Generation Partnership Project (3GPP) long-term evolution (LTE) project, which is regarded as a "quasi-4G" technology, uses Orthogonal Frequency Division Multiple Access (OFDMA) and multiple-input MIMO (Multiple-Input Multiple-Output, MIMO) is the core, and its main performance goals include: providing a peak rate of downlink 100Mbps and uplink 50Mbps in a 20MHz spectrum bandwidth; improving the performance of cell edge users; increasing cell capacity; reducing system delay, Specifically, the one-way transmission delay within the user plane is less than 5ms, the transition time of the control plane from the sleep state to the active state is less than 50ms, and the transition time from the resident state to the activ...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0041H04L1/0061H04L1/0072
Inventor 王学寰于萍莫君贤李莉
Owner HUAWEI TECH CO LTD
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