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Transmitting means and receiving means for reliably receiving control messages

A technology for sending devices and controlling messages, which is applied in the direction of forward error control, selective content distribution, multiple use of transmission paths, etc., and can solve problems such as high interference

Active Publication Date: 2022-05-31
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Transmitting means and receiving means for reliably receiving control messages
  • Transmitting means and receiving means for reliably receiving control messages
  • Transmitting means and receiving means for reliably receiving control messages

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Embodiment Construction

[0105] In LTE and NR cellular systems, downlink control information (DCI) messages are sent in the DL to inform the DL receiver or UL transmitter of transmission parameters to be used for the reception or transmission of subsequent data messages, For example, modulation, FEC code rate, time-frequency resources. Conventionally, the CRC word is calculated based on the DCI message and appended to the DCI to obtain the control packet. Then, the obtained control packet (ie, DCI plus CRC word) is FEC encoded and transmitted.

[0106]When the decoded control packet contains residual FEC decoding errors, the CRC check often fails, invalidating the control information message. Less common but also not negligible is that erroneous FEC decoded control packets pass the CRC check, thus leading to false alarm events. In order to reduce the probability of false alarms, the inventors herein propose to provide a second CRC word that can be FEC encoded together with the control packet and sen...

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Abstract

The invention relates to a transmitting device (100) and a receiving device (300) for reliably receiving control messages such as downlink control information. The sending device (100) forms a control message (510) comprising control information, a first CRC word (W1) and a second CRC word (W2). The control message (510) is sent to the receiving device (300), which obtains a first CRC check result based on performing a first CRC check on the control message (510), and based on performing a second CRC check on the control message (510). CRC check to obtain the second CRC check result. Thus, more reliable reception of control messages (510) is possible. Furthermore, the invention also relates to a corresponding method and computer program.

Description

technical field [0001] The present invention relates to a transmitting apparatus and a receiving apparatus for reliably receiving control messages. Furthermore, the invention also relates to corresponding methods and computer programs. Background technique [0002] In mobile wireless cellular systems such as 3GPP LTE and NR, each downlink / uplink (DL / UL) data transmission is preceded by a DL control information (DCI) message, which The information message informs the DL receiver / UL transmitter of the transmission parameters to be used for the reception / transmission of subsequent data messages. Transmission parameters may for example relate to modulation, FEC code rate, time-frequency resources, and the like. The control information message is usually sent in a predefined time-frequency resource set called a control resource set (Control Resource Set, CORESET) in 3GPP NR. Control transmissions use a subset of CORESET time-frequency resources; each of the CORESET subsets tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2383H04L1/00H04L1/20H03M13/09H03M13/29H03M13/00H04L1/18H04L5/00H04W72/12
CPCH03M13/09H03M13/091H03M13/2906H03M13/6525H04L1/0061H04L1/0072H04L1/1896H04L5/0023H04L5/0053H04N21/2383
Inventor 阿娜伊德·罗伯特·萨法维阿尔伯托·杰赛普·佩罗蒂布兰尼斯拉夫·M·波波维奇托斯顿·斯科尔
Owner HUAWEI TECH CO LTD
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