Blind test efficiency improvement method for TD-LTE (Time Division Long Term Evolution) system

An efficient and blind detection technology, applied in the field of mobile communications, can solve problems such as delay and user experience, and achieve the effects of reducing system delay, improving blind detection efficiency, and reducing the maximum number of blind detection times

Active Publication Date: 2013-09-11
CHONGQING UNIV OF POSTS & TELECOMM
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AI Technical Summary

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

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  • Blind test efficiency improvement method for TD-LTE (Time Division Long Term Evolution) system
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  • Blind test efficiency improvement method for TD-LTE (Time Division Long Term Evolution) 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 intercepted length 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 front and re...

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Abstract

The invention discloses a blind test efficiency improvement method for a TD-LTE (Time Division Long Term Evolution) system. Data repeat is utilized when the speed rates are matched at a sending terminal, sliding self-correlation is utilized at a receiving terminal, starting positions of data reuse are estimated, candidate sets are arranged according to the possibility, and blind tests are sequentially performed, so that the accuracy of the blind tests is improved; two large polymerization degree blind test sets are combined, so that the maximum blind test numbers are reduced; and judgment can be performed on a correlation value of a public search space first and then calculation can be performed when two search spaces simultaneously exist, so that the speed rates of the blind tests are improved. The blind test efficiency improvement method for the TD-LTE system can effectively improve the blind test efficiency and enables the blind tests to be rapid.

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 Applications(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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