A method and device for processing downlink control information
A technology for controlling information and downlinks, applied in the field of communication, can solve the problems of reducing system throughput, increasing system data processing delay, and high implementation complexity
Active Publication Date: 2021-09-14
HUAWEI TECH CO LTD
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Problems solved by technology
While the existing technology uses time domain repetition to obtain coverage gain, it also greatly increases the data processing delay of the system and reduces the throughput of the system.
At the same time, the time-domain repetition method also needs to consider the timing design of Hybrid Automatic RepeatreQuest (HARQ), which has high implementation complexity and low adaptability
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[0208] The method for processing downlink control information provided in this application is applicable to an LTE communication system. Such as figure 1 It is a schematic diagram of the architecture of the LTE communication system provided by this application. The LTE system provided in this application includes a terminal (that is, user equipment, English: User Equipment, UE), a base station (eNodeB), a network node, and the like. Wherein, the foregoing network node may include a Mobility Management Entity (English: Mobility Management Entity, MME) or a Serving Gateway (English: Serving GateWay, S-GW), etc. In a specific implementation, the UE and the base station can perform data interaction through the Uu interface, the base station can perform data interaction through the X2 interface, and the base station and the network node can perform data interaction through the S1 interface. It should be noted that the foregoing connection manners for data exchange between the UE,...
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The present application provides a method and device for acquiring downlink control information. The method includes: the terminal determines a predefined search space according to the aggregation level it supports, and the predefined search space includes aggregation level 16 and aggregation level 24. A search space corresponding to at least one aggregation level; the terminal performs blind detection on the predefined search space to obtain downlink control information DCI. The method further includes: the terminal determines the blind detection search space of the terminal from the predefined search space according to the number of resource blocks RB occupied by the enhanced physical downlink control channel EPDCCH and the aggregation level supported by the terminal, the The predefined search space includes a search space corresponding to the number of RBs being 16; the terminal performs blind detection on the blind detection search space to obtain downlink control information DCI. By adopting the present application, the gain of downlink coverage can be improved, and the diversity of realization ways of downlink coverage enhancement can be improved.
Description
technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for processing downlink control information. Background technique [0002] With the increasing popularity of long-term evolution (English: Long Term Evolution, LTE) applications, more and more application scenarios need to achieve deep signal coverage, that is, it is necessary to enhance the signal coverage of cell edge users so that users can obtain the control they need information. The LTE coverage enhancement technology includes uplink coverage enhancement technology and downlink coverage enhancement technology, wherein the downlink coverage enhancement technology includes increasing the output power or increasing the number of transmitting antennas. The LTE small cell is a small base station with the characteristics of rapid deployment, easy installation, and small size. The application based on the LTE small cell is becoming more and mo...
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IPC IPC(8): H04W72/04
CPCH04W72/04H04L5/003H04L5/0094H04L5/006H04L1/08H04L1/04H04L1/0038H04W16/26H04W72/23
Inventor 李振宇李志军李汉涛
Owner HUAWEI TECH CO LTD