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Analytic method of control information and terminal

A control information and analysis method technology, applied in the control information analysis method and terminal field, can solve the problem of increasing the number of blind detections, and achieve the effect of increasing the number of blind detections and enhancing the physical downlink control channel.

Active Publication Date: 2013-06-05
HUAWEI TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The inventors of the present invention found that in the prior art, the DCI carried on the PDCCH is limited. If the number of DCI carried on the PDCCH is increased, the types of format sizes will be increased, which in turn will lead to an increase in the number of blind detections

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  • Analytic method of control information and terminal
  • Analytic method of control information and terminal
  • Analytic method of control information and terminal

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Embodiment Construction

[0032] In the prior art, to enhance the PDCCH, that is, to carry more DCI on the PDCCH, can be achieved by compressing the DCI format, but the method of compressing the DCI format increases the types of format sizes, which in turn leads to an increase in the number of blind detections.

[0033] The embodiment of the present invention provides a method for analyzing control information, which can enhance the physical downlink control channel (PDCCH) without increasing the number of times of blind detection. The embodiment of the present invention also provides a corresponding terminal. Each will be described in detail below.

[0034] refer to figure 1 , an embodiment of the method for analyzing control information provided by the embodiment of the present invention includes:

[0035] 101. Acquire the serial number of the resource where the PDCCH carrying the DCI is located, and the resource is a bearer of the PDCCH.

[0036] The downlink control information (DCI) is carried ...

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Abstract

The invention discloses an analytic method of control information. The analytic method includes that the serial number of the resource where a Physical Downlink Control Channel (PDCCH) used for loading a DCI is located is obtained, and the obtained serial number of the resource is used for delivery calculation for delivery parameters; and the format of the DCI loaded on the resource corresponding to the resource serial number is judged according to the remainder of delivery calculation, wherein the format of the DCI includes a normal format and a saving bit format, the length of the DCI in the saving bit format is smaller than that of the DCI in the normal format, and the PDCCH is subjected to blind detection by using the judged length of the DCI in the normal format or the saving bit format to obtain all fields of the DCI. The length of the DCI in the saving bit format is smaller than that of the DCI in the normal format, a base station only issues the DCI in one format except for the rollback format for all the resources, so that the variety of the DCI length is not added, and the PDCCH is enhanced without increasing the blind detection times.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for analyzing control information and a terminal. Background technique [0002] In the long-term evolution (LTE, Long Term Evolution) system, before the user equipment (UE, User Equipment) receives or sends service data, it needs to know the downlink control information (DCI, Downlink Control Information), the DCI is carried by a physical downlink control channel (PDCCH, Physical Downlink Control channel). The size of each PDCCH is called aggregation level (AL, Aggregation Level), which can be aggregated by 1, 2, 4 or 8 consecutive control channel elements (CCE, Control Channel Element,). [0003] Through the configuration of the transmission mode, the UE knows which two DCI formats it needs to detect (one normal format and one fallback format), but the UE does not know the aggregation level of the PDCCH that bears the DCI sent to it, nor does it know that the be...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04L1/00
Inventor 张兴炜
Owner HUAWEI TECH CO LTD
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