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Physical downlink control information acquisition method, device, terminal and system

A technology for physical downlink control and control information, applied in the field of LTE (Long Term Evolution), which can solve the problems of large resources, limited data traffic channel capacity, and inability to solve the problem of control channel capacity, etc., and achieves the effect of improving efficiency and reducing occupation.

Active Publication Date: 2014-11-12
CHINA TELECOM CORP LTD
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Problems solved by technology

Although the dynamic resource indication method puts the control channel signaling into the PDSCH domain for transmission, the resource consumed by the dynamic indication is also very large, so when the number of active UEs in the cell is large, this method still cannot solve the problem of control The capacity problem faced by the channel, on the contrary, will cause the capacity limitation of the data service channel due to the occupation of too many PDSCH resources to transmit control information

Method used

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  • Physical downlink control information acquisition method, device, terminal and system
  • Physical downlink control information acquisition method, device, terminal and system
  • Physical downlink control information acquisition method, device, terminal and system

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Embodiment Construction

[0059] 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.

[0060] 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.

[0061] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0062] 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 Authoriz...

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Abstract

The invention discloses a physical downlink control information acquisition method, device, terminal and system and relates to the technical field of LTE. The method includes the steps that when UE detects exclusive control information of users of the UE after detecting public control information, E-PDCCH addressing set indication information is detected in a PDCCH area, and E-PDCCH search space is found according to the detected addressing information for blind detection on the exclusive control information of the users of the UE. According to the method, E-PDCCH addressing indication is carried out by combination of a dynamic signaling configuration mode and a high-level semi-static signaling configuration mode, the UE is deeply utilized for feeding back channel state estimation information, the users within the similar area are grouped, expenses of information indication are reduced, and capacity of a PDCCH is improved. Under the situation that control channel resources are not sufficient but traffic channel resources are sufficient, more control channel resources can be provided flexibly.

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, terminal and system for acquiring physical downlink control information. Background technique [0002] The 3GPP LTE system is a long-term evolution version of 3G (3rd Generation, third-generation mobile communication system). At present, its standard development situation is that the Release (version) 8 (Rel.8) version and the slightly changed Rel.9 version based on Rel.8 are relatively mature. The subsequent LTE Rel.10 version has relatively large changes compared to Rel.8 and Rel.9 versions. 3GPP calls this version and subsequent versions the LTE-A (LTE-Advanced) system, which is an enhanced version of LTE. Competitive system performance metrics. Currently the Rel.10 version standard has been frozen, and the Rel.11 version standard research and definition work has started and is under discussion. [0003] LTE and LTE-A...

Claims

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Application Information

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