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A method for improving blind detection efficiency in td-lte system

An efficient and user-friendly technology, applied in transmission systems, digital transmission systems, and multiple uses of transmission paths, can solve problems such as delays and user experience, reduce system delays, improve blind detection efficiency, and reduce maximum The effect of the number of blind inspections

Active Publication Date: 2016-11-30
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

When the algorithm is not good enough, the maximum number of blind detections may occur frequently, or blind detections close to the maximum number of blind detections may occur frequently, which will bring great delays to the entire system and bring inconvenience to users. good experience

Method used

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  • A method for improving blind detection efficiency in td-lte system
  • A method for improving blind detection efficiency in td-lte system
  • A method for improving blind detection efficiency in td-lte system

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Embodiment Construction

[0017] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] The present invention proposes a method for improving the efficiency of blind detection in the LTE system, which utilizes the repetition phenomenon that occurs when data is rate-matched at the sending end, and uses sliding autocorrelation at the receiving end to estimate the starting position of its multiplexing. The algorithm is effective The maximum number of blind detections is greatly reduced, and at the same time, the candidate sets are arranged according to the possibility, which is better than the conventional exhaustive algorithm; after the length of the DCI information and the search space are determined at the receiving end, the length of the interception is calculated and taken out from the search space The data of the corresponding length is truncated to the same length, and the correlation calculation is performed on the fron...

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Abstract

The invention discloses a method for improving the efficiency of blind detection in a TD-LTE system, which utilizes the repetition phenomenon that occurs when data is rate-matched at the sending end, and uses sliding autocorrelation at the receiving end to estimate the starting position of its multiplexing. The accuracy of the blind detection is improved by arranging the candidate sets and performing blind detection in turn. Combining two sets of blind detections with a large aggregation degree reduces the maximum number of blind detections. When there are two search spaces at the same time, the correlation value of the common search space is first judged and then calculated, which improves the speed of blind detection. The invention can effectively improve the efficiency of blind detection and provide a faster blind detection method.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to the third-generation mobile communication long-term evolution system (TD-LTE). Background technique [0002] In recent years, with the rapid development of traditional cellular mobile communication technologies, broadband wireless access technologies such as mobile WiMAX (Worldwide Interoperability for Microwave Access, WiMAX) have also begun to provide mobile functions, trying to seize part of the mobile communication market. In order to ensure the continued competitiveness of 3G mobile communications, the mobile communications industry has put forward new market demands, requiring further strengthening of 3G technology. However, HSPA (High Speed ​​Packet Access) technology at the same time is still at a disadvantage compared to WiMAX to a certain extent. In response to this situation, 3GPP basically completed the R8 version of LTE (Long Term Evolution) in 2...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00
Inventor 王华华邱智慧李小文陈发堂王丹刘宇
Owner CHONGQING UNIV OF POSTS & TELECOMM
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