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E-PDCCH-based downlink control information acquisition method, device and terminal

A technology for control information and physical downlink control, applied in wireless communication, electrical components, etc., can solve problems such as affecting the UE communication process, waste of resources, and inability to correctly parse the UE, so as to reduce unnecessary wrong addressing, efficient use, and avoidance of Effect of Signaling Ambiguity Period

Active Publication Date: 2014-11-19
CHINA TELECOM CORP LTD
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AI Technical Summary

Problems solved by technology

Therefore, if the eNB schedules the DCI according to the updated scheduling information after sending the high-level instruction to update the addressing indication information, the UE may not be able to parse it correctly, resulting in a waste of resources and affecting the communication process of the UE.

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  • E-PDCCH-based downlink control information acquisition method, device and terminal
  • E-PDCCH-based downlink control information acquisition method, device and terminal
  • E-PDCCH-based downlink control information acquisition method, device and terminal

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Embodiment Construction

[0045] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0046] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0047] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as any limitation of the invention, its application or uses.

[0048] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the...

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Abstract

The invention discloses an E-PDCCH-based downlink control information acquisition method, device and terminal, and relates to the technical field LTE. The method provides a high-level signaling indication scheme of dynamically indicating an addressing signaling update node moment by a PCFICH, when the high-level signaling is transmitted to UE high-level E-PDCCH addressing indication information through a PDSCH; and after an instruction update, when the PCFICH indicates that the symbolic number of the PDCCH is a preassigned value, eNB and UE perform addressing according to recently updated high-level addressing signaling. The method, device and terminal implicitly solve the problem that the E-PDCCH high-level addressing signaling has an instruction fuzzy period, solve the problem of inconsistency of addressing information between UE and eNB which may occur in the instruction fuzzy period, reduces circumstances that E-PDCCH channel information cannot be correctly analyzed in the fuzzy period which are brought by the problem, and reduces corresponding resource waste.

Description

technical field [0001] The present invention relates to the technical field of LTE (Long Term Evolution, long term evolution), in particular to a method, device and terminal for acquiring downlink control information based on E-PDCCH (Enhanced Physical Downlink Control Channel, enhanced physical downlink control channel). Background technique [0002] 3GPP (The3rd Generation Partnership Project, third generation partnership project) LTE (Long Term Evolution, long-term evolution) system is a long-term evolution version of 3G (3rd Generation, third-generation mobile communication system). Compared with the existing GSM (Global System of Mobile communication, Global System for Mobile Communications), WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access), CDMA2000 (Code Division Multiple Access2000, Code Division Multiple Access 2000), etc. The mobile communication system provides a higher user peak rate, a larger coverage area, and better cell u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
Inventor 李欣陈鹏蒋铮
Owner CHINA TELECOM CORP LTD
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