A dci0 signal virtual detection screening method and device
A signal and screening technology, applied in the field of communication, can solve problems such as missed detection, and achieve the effect of avoiding missed detection
Active Publication Date: 2019-01-01
合肥东芯通信股份有限公司
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[0005] In practical applications, although the DCI0 of the false detection has some common characteristics, conversely, the DCI0 of the non-blind detection does not necessarily have these characteristics. The risk of detecting (that is, determining the correct DCI0 as a falsely detected DCI0)
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[0042] The embodiment of the present application discloses a method and device for false detection and screening of DCIO signals, which can be applied in the LTE system. The LTE system is based on the cellular network architecture. In each cell, there is a base station to provide services. A terminal (User Equipment, UE) accesses a mobile communication network through a base station or implements communication between users. In the cellular network, the base station plays a dominant role, and implements deployment of UEs to provide services. Generally, the transmission link from the UE to the base station is called an uplink, and vice versa is called a downlink.
[0043] In the uplink transmission, DCI0 plays an important role, and the base station schedules the uplink transmission behavior of the UE by sending the DCI0 downlink to the UE. Therefore, the UE needs to blindly detect DCI0 on specific time and frequency resources, confirm whether the base station has sent DCI0, a...
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The invention provides a false detection screening method and device of DCI0 signals. The method comprises following steps: obtaining a first sequence through carrying out convolutional code encoding to the DCI0 signals obtained by blind detection; obtaining a second sequence through carrying out hard decision to soft information, wherein the soft information is input signals input in a decoder in a blind detection process, the DCI0 signals obtained by the blind detection are the output signals of the decoder in the blind detection process; judging whether the first sequence and the second sequence are the same or not, if so, determining that the DCI0 signals obtained by the blind detection are non-false detection signals, namely, the DCI0 signals obtained by the blind detection are real DCI0 signals. According to the method and the device of the embodiment of the invention, the features of the false detection signals are no longer taken as the false detection screening basis; the false detection is judged according to the sequences obtained by signal convolutional code encoding and hard decision of soft information; and therefore, the possibility of generating missed detection resulted from reducing the false detection can be avoided.
Description
technical field [0001] The present application relates to the field of communications, and in particular to a method and device for false detection and screening of DCIO signals. Background technique [0002] In the uplink transmission of the LTE system, DCI0 plays an important role, and the base station sends DCI0 to the UE through the downlink to schedule the uplink transmission behavior of the UE. The UE needs to blindly detect DCI0 on specific time and frequency resources, confirm whether the base station has sent DCI0, and respond accordingly. [0003] Once the UE thinks that DCI0 has been detected, it will perform corresponding uplink transmission behaviors according to the information in the DCI0. Therefore, if the DCI0 is a false detection, that is, the base station does not send the DCI0 to the UE, but the UE detects the DCI0, unnecessary operations will be caused and network performance will be affected. Therefore, it is necessary to further screen the blindly de...
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IPC IPC(8): H04L1/00
CPCH04L1/0038H04L1/0059
Inventor 张国松任江涛吴齐发唐相国
Owner 合肥东芯通信股份有限公司