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Resource mapping method and blind detection method based on same

A resource mapping and resource technology, which is applied in the field of PDCCH blind detection and downlink control information mapping, can solve the problem of not considering the combination of DCI mapping and blind detection strategy, so as to reduce delay, reduce the number of blind detection times, and improve processing speed effect

Inactive Publication Date: 2015-06-24
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

But these focuses are on the blind detection strategy, and do not take into account the combination of DCI mapping and blind detection strategy

Method used

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  • Resource mapping method and blind detection method based on same
  • Resource mapping method and blind detection method based on same
  • Resource mapping method and blind detection method based on same

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Embodiment Construction

[0030] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] The solutions of the present invention are: a resource (DCI) mapping method and a blind detection method based on the resource mapping method.

[0032] Such as figure 1 Shown is a flow chart of resource mapping, and the DCI mapping scheme of the present invention includes:

[0033] S01: The base station according to the channel quality index CQI of user i i , allocate the number of CCEs that can bear resources; the base station allocates the number of CCEs that can bear DCI information according to the CQI (Channel Quality Indication) of the user to be scheduled.

[0034] In terms of allocating CCE, it can be allocated according to the CQI information of each user, and the specific allocation is shown in Table 1...

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Abstract

The invention discloses a resource mapping method and a blind detection method based on the same. A user is rapidly positioned at a recourse position of an aggregation level R according to the RNTI value of the user, then whether current information is information of the user is detected, and if not, resource information of other positions of the aggregation level R is traversed; if DCI of the user is still not found, resource information of other aggregation levels is traversed till the DCI of the user is found. By integrating resource DCI mapping and blind detection strategies, the position information of the DCI of the user can be rapidly positioned, the frequency of blind detection on a PDCCH on the user side is reduced, time delay can be reduced, the processing speed of a terminal can be increased, and the methods are necessary for an LTE system with high time relay requirements.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a downlink control information mapping method and a PDCCH blind detection method. Background technique [0002] With the continuous development and evolution of mobile communication technology, 3GPP started the "Long Term Evolution of Third Generation Mobile Communication System" LTE project in November 2004 to realize the smooth transition from 3G technology to 4G. The improvement goals of LTE are to achieve higher data rate, shorter delay, lower cost, higher system capacity and improved coverage. [0003] In the LTE (Long Term Evolution) system, downlink control information (DCI) is mainly used to carry downlink scheduling allocation principles, uplink scheduling requests, and power control commands. The DCI may be carried on a PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel). The PDCCH can be carried on logically continuous L CCE...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L5/00
Inventor 马立香张志强黄琼段景山
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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