PDCCH CCE aggregation level determining method

A technology of aggregation level and determination method, applied in digital transmission system, electrical components, error prevention, etc., can solve problems such as waste of resources, increase of PDCCH blocking rate, unreasonable allocation of PDCCH resources, etc., to improve success rate, PDCCH resource allocation reasonable effect

Inactive Publication Date: 2016-04-06
POTEVIO INFORMATION TECH
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Problems solved by technology

The advantage of this implementation method is that it is easy to implement, and the disadvantage is that the allocation of PDCCH resources is unreasonable
When the channel conditions are relatively good, less resources are required to be allocated, but more resources are actually allocated, resulting in a waste of resources; when the channel conditions are relatively poor, more resources are needed to ensure the reliability of transmission. And when multiple DCI formats are multiplexed, the blocking rate of the PDCCH will increase, resulting in a decrease in the success rate of blind detection of the terminal

Method used

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  • PDCCH CCE aggregation level determining method
  • PDCCH CCE aggregation level determining method
  • PDCCH CCE aggregation level determining method

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Embodiment Construction

[0046]This application provides a PDCCHCCE aggregation level determination method, the design concept of which is: preset the corresponding relationship table between downlink channel quality parameters and CCE aggregation levels; query the corresponding relationship table according to the current downlink channel quality parameters of the user equipment, and query the The corresponding CCE aggregation level of is used as the current CCE aggregation level. Further, if the CCE position corresponding to the current CCE aggregation level is not occupied, then select the current CCE aggregation level; otherwise, that is, the CCE position corresponding to the current CCE aggregation level is occupied, then raise the current CCE aggregation level by one level and continue The PDCCH resource is searched until an available CCE position is found; or when the aggregation level reaches a maximum of 8, there is no available CCE position.

[0047] In order to make the technical principles,...

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Abstract

The invention discloses a physical downlink control channel (PDCCH) control channel element (CCE) aggregation level determining method, which comprises the steps of: A, setting a correspondence table of CCE aggregation levels and downlink channel quality parameters; B, acquiring the downlink channel quality parameter of current user equipment; C, querying the correspondence table according to the downlink channel quality parameter of the current user equipment, and regarding the queried corresponding CCE aggregation level as the current CCE aggregation level. The invention further discloses a device for determining PDCCH CCE aggregation levels. By adopting the PDCCH CCE aggregation level determining method and the device, the PDCCH resource allocation of the user equipment can be more reasonable.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a method for determining a PDCCHCCE aggregation level. Background technique [0002] In an LTE mobile communication system, a physical downlink control channel (PDCCH, PhysicalDownlinkControlChannel) is used to carry downlink control information (DCI, DownlinkControlInformation), which is shared by uplink and downlink scheduling, and mainly includes scheduling allocation and other control information. The user equipment (UE, UserEquipment) obtains the required DCI information through blind detection, and after the UE correctly receives the PDCCH information, it is used to decode the physical downlink shared channel (PDSCH) information and obtain the uplink authorization. The correctness of PDCCH decoding determines the transmission rate. [0003] Multiple PDCCHs can be transmitted simultaneously in one subframe. A PDCCH is composed of n consecutive co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00
Inventor 朱雅琼
Owner POTEVIO INFORMATION TECH
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