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Blind detection method

A technology of blind detection and measurement results, applied in the field of blind detection, can solve the problems of unfavorable UE power saving, large processing capacity, and high complexity, and achieve the effects of reducing the number of attempts, reducing power consumption, and reducing the amount of calculation

Active Publication Date: 2010-11-10
北京万海云科技有限公司
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Problems solved by technology

[0017] It can be seen from the above process that the existing blind detection method needs to be tried continuously, especially in the extreme case, it is necessary to try all the CCE numbers and PDCCH DCI formats. The duration and disadvantages of UE power saving and other issues

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Embodiment Construction

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] The core idea of ​​the present invention is: use the transmission mode and historical scheduling information configured by the network to the UE to determine the PDCCH DCI format blind detection candidate set, and use the channel SINR / SNR measurement and channel changes during two adjacent scheduling to preliminarily determine the bearer PDCCH In this way, the number of UE PDCCH blind detection attempts can be greatly reduced, the calculation amount and processing complexity of the UE can be reduced, the power consumption of the UE can be reduced, and the system performance can be improved.

[0036] image 3 It is a schematic flow chart of Embodiment 1 of the present invention. This embodiment provides that when the UE's last two e...

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Abstract

The invention provides a blind detection method. The method comprises the following steps of: determining a PDCCH DCI format candidate set for blind detection by using the transmission mode and historical dispatching information which are configured by a network for UE, and preliminarily determining the number of CCE resources for bearing a PDCCH by using signal-to-noise ratio measurement results of channels and channel changes of adjacent two-time scheduling so as to effectively reduce trying times of UE PDCCH blind detection. Therefore, the blind detection method can reduce calculated amount and processing complexity of the UE, reduces the power consumption of the UE and improves system performance.

Description

technical field [0001] The invention relates to a blind detection technology in a mobile communication system, in particular to a blind detection method in a long-term evolution (LTE) system. Background technique [0002] The LTE system is a broadband mobile communication system. The uplink adopts single-carrier frequency division multiple access (SC-FDMA) technology, and the downlink adopts orthogonal frequency division multiple access (OFDM) technology. The supported system bandwidth includes 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz. In LTE and subsequent LTE+ systems, in order to maximize the use of resources and improve system throughput, all physical resources in the cell are shared, and are uniformly scheduled and allocated to UEs in the cell by the network side. [0003] In the LTE system, uplink and downlink resource scheduling is performed through a physical downlink control channel (PDCCH). For downlink resource allocation, the network side first transmits the ...

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Application Information

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IPC IPC(8): H04W24/00H04L1/00H04L25/02
CPCH04W72/1289Y02B60/50H04L1/0045Y02D30/70H04W72/23
Inventor 吴松陈永倩
Owner 北京万海云科技有限公司
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