Method and device for encoding downlink control information in communication network
A technology for controlling information and mobile communication networks, applied in wireless communication, use of forward error control, network traffic/resource management, etc., can solve problems such as errors, poor performance, and wrong indication of CIB length
Active Publication Date: 2021-10-15
HUAWEI TECH CO LTD
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Problems solved by technology
[0007] However, there is a major problem with existing direct indication schemes: errors in the headers within the DCI lead to incorrect indications of the CIB length for the user equipment (UE)
Even if cyclic redundancy check (CRC) protection can be provided, without additional protection of the information part or header, this will lead to false alarm rate (FAR) in the downlink control channel. poor performance
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[0044] In the following description, reference is made to the accompanying drawings which form a part hereof and which show by way of illustration specific aspects to which the application may apply. It is to be understood that other aspects may be utilized and structural or logical changes may be made without departing from the scope of the present application. Accordingly, the following detailed description is not limiting, as the scope of the application is defined by the appended claims.
[0045] For example, it should be understood that a disclosure related to a described method is also applicable to a corresponding device or system for performing the method, and vice versa. For example, if specific method steps are described, a corresponding device may include means for performing the described method steps, even if such means are not explicitly described or shown in the drawings.
[0046] Furthermore, in the following detailed description as well as in the claims, embo...
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The present application relates to a communication transmitter (201), which is used for sending a control message to a communication entity through a physical downlink control channel in a mobile communication network (200). The communication transmitter (201) includes: a processor (203) and a communication interface (205), the processor (203) is used to process a control block to obtain control messages, the control block has a first part (101) and a second part (102 ), the first part includes downlink control information bits, the downlink control information bits indicate information related to data transmission through the mobile communication network (200), wherein the processor (203) is used to insert the prefix error detection code bits into the control The second part of the block is to obtain control messages; the communication interface (205) is used to send the control messages over the mobile communication network (200). The present application also relates to a communication receiver (231) for receiving a control message sent from a communication transmitter (201) through a communication network (200), wherein the communication receiver (231) includes a communication interface (233) and a processor (235), the communication interface (233) is used for receiving the control message through the communication network; the processor (235) is used for decoding the prefix error detection code bits of the second part, to reliably determine the first part (101) of the control block length.
Description
technical field [0001] Generally, this application relates to mobile communications. More specifically, the present application relates to a transmitter and a receiver and a corresponding method for indicating the length of a control information block in a physical downlink control channel of a mobile communication network. Background technique [0002] In a long-term evolution (LTE) network, because the UE has no information about the exact parameters of the encoding, the user equipment (user equipment, UE) controls the physical downlink control information called downlink control information (downlink control information, DCI) Channel (physical downlink control channel, PDCCH) messages are blindly decoded. The UE may perform multiple attempts to decode received data according to all possible code lengths and information lengths for the current transmission mode. This process is called blind decoding or blind detection (blind detection, BD) of downlink control information...
Claims
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IPC IPC(8): H04L1/00
CPCH04L1/0041H04L1/0061H04L1/0072H04W28/04H04W48/08H04W72/23
Inventor 瓦丁姆·安德烈维奇·列夫特斯基金杰奥列格·菲特维奇·库尔马耶夫阿列克谢·爱德华多维奇·马耶夫斯基
Owner HUAWEI TECH CO LTD