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Methods and devices for notifying and decoding DCI (downlink control information)

A technology to control information and control channels, applied in the field of communication, can solve the problems of extended decoding processing time and high power consumption, and achieve the effect of reducing processing delay and power consumption

Active Publication Date: 2013-07-31
盐城市盐南高新区都市产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a DCI notification method and device, as well as a DCI decoding method and device, so as to solve the problems that the existing solution for processing DCI carried by EPDCCH causes the UE to prolong the decoding process of DCI and consume a lot of power

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  • Methods and devices for notifying and decoding DCI (downlink control information)
  • Methods and devices for notifying and decoding DCI (downlink control information)
  • Methods and devices for notifying and decoding DCI (downlink control information)

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Embodiment 1

[0041] refer to figure 1 , shows a flow chart of steps of a DCI notification method according to Embodiment 1 of the present invention.

[0042] This embodiment describes the processing of DCI information from the base station side, and the DCI notification method in this embodiment includes the following steps:

[0043] Step S10: the base station generates DCI indication signaling according to the starting position of the DCI carried by the EPDCCH and the information of the degree of aggregation.

[0044] Wherein, the DCI indication signaling may be any appropriate signaling form capable of carrying the information of the starting position and the aggregation degree of the DCI carried by the EPDCCH.

[0045] Step S20: the base station sends the DCI indication signaling to the UE, so that the UE decodes and obtains the DCI corresponding to the UE according to the DCI indication signaling.

[0046] Through this embodiment, the DCI indication signaling is used to carry the inf...

Embodiment 2

[0048] refer to figure 2 , shows a flowchart of steps of a DCI notification method according to Embodiment 2 of the present invention.

[0049] In this embodiment, the processing of DCI information is still described from the base station side. The DCI indication signaling adopts the form of radio subframe or RRC (Radio Resource Control, radio resource control) signaling, and the radio subframe or RRC signaling carrying DCI information order to inform the UE of the starting position and aggregation degree of its corresponding DCI in the EPDCCH.

[0050] The DCI notification method in this embodiment includes the following steps:

[0051] Step S102: the base station carries information about the starting position and aggregation degree of the DCI carried by the EPDCCH in the PDCCH field of the radio subframe or in the RRC signaling.

[0052] After the base station carries the starting position and aggregation degree information of the DCI carried by the EPDCCH in the PDCCH d...

Embodiment 3

[0057] refer to image 3 , shows a flow chart of steps of a DCI notification method according to Embodiment 3 of the present invention.

[0058] The DCI notification method in this embodiment is an optimization scheme of the DCI notification methods in Embodiment 1 and Embodiment 2, and the processing of DCI information is still described from the base station side.

[0059] The DCI notification method in this embodiment includes the following steps:

[0060] Step S202: The base station uses the PDCCH DCI 3 / 3A format to carry in the PDCCH field of the radio subframe the starting position and aggregation degree information of the DCI carried by the EPDCCH; or, the base station carries the information of the DCI carried by the EPDCCH in the RRC reconfiguration signaling. Information about the starting position of the DCI and the degree of aggregation.

[0061] The radio subframe or the RRC reconfiguration signaling carrying the information of the starting position and aggregat...

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Abstract

The invention provides a method and a device for notifying DCI and a method and a device for decoding DCI. The DCI notifying method comprises the steps as follows: a base station generates a DCI indicating signaling according to information of an initial position and a polymerization degree of the DCI borne by an EPDCCH (enhance physical downlink control channel); and the base station sends the DCI indicating signaling to UE (user equipment), so that the UE performs decoding according to the DCI indicating signaling to obtain the DCI corresponding to the UE. According to the methods and the devices, effects of reducing the processing time delay and the power consumption of the UE effectively are realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a DCI (Downlink Control Information, downlink control information) notification method and device for an LTE-A (Long Term Evolution-Advanced, Advanced Long Term Evolution) system, and a DCI decoding method and device. Background technique [0002] LTE-A is an enhanced version after further evolution of LTE, and supports forward and backward compatibility development with LTE. In the LTE-A system, it is necessary to support MU-MIMO (Multiple User Multiple Input Multiple Output, multi-user MIMO), eICIC (enhanced Inter-Cell Interference Coordination, enhanced inter-cell interference coordination), and CoMP (Co-ordinated Multi- Points, coordinated multi-point transmission) and other technologies to improve the performance of the system. However, the above-mentioned technologies increase the number of user equipments that can be scheduled at the same time, but due to t...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 姜戬李俊杰吴群英
Owner 盐城市盐南高新区都市产业发展有限公司
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