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Method and device for reporting uplink control information

A control information and preset technology, applied in wireless communication, electrical components, etc., can solve problems such as inapplicability of TDD system

Active Publication Date: 2011-08-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In view of this, the present invention discloses a method and device for reporting uplink control information in DRX mode to solve the problem that the current LTE FDD scheme for reporting uplink control information cannot be applied to TDD systems

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  • Method and device for reporting uplink control information
  • Method and device for reporting uplink control information
  • Method and device for reporting uplink control information

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Embodiment Construction

[0054] As analyzed above, for a TDD system, since there are only UL or DL ​​subframes at the same time, the UE cannot use the LTE FDD scheme to send uplink control signaling. see Figure 5 , is a schematic diagram of an example of TDD subframe allocation, a frame (frame) includes 5 subframes (subframe), and the ratio of uplink and downlink is 2:3. According to the current LTE FDD scheme of sending uplink control information in DRX mode, even if the eNB configures resources for UE to send uplink control information in each UL subframe, since the UE has no UL subframe during On duration or Active Time , so the uplink control information cannot always be reported.

[0055] The present invention sets a time window that has a fixed time relationship with On duration or Active Time, and is used to send uplink control information when TDD enables DRX mode.

[0056] see Image 6 , is a flow chart of the method of the present invention, including:

[0057] Step 601: Determine the m...

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Abstract

The invention discloses a method for reporting uplink control information. The method comprises the following steps: On duration or Active Time in a DRX mode is determined; the On duration or the Active Time is searched according to an upstream subframe corresponding to the preset condition; and the uplink control information is transmitted to an evolutionary base station eNB by using the upstream subframe. The invention utilizes the structural characteristics of the TDD system frame to find out the corresponding upstream subframe according to the On duration or the Active Time and bears the uplink control information to be transmitted to the eNB via the found upstream subframe to support the normal transmission of the upstream data and the downstream data of the TDD system, and in addition, the invention is also suitable for an FDD system. The invention also provides a device corresponding to the method.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and device for reporting uplink control information in a discontinuous reception (Discontinuous Reception, DRX) mode. Background technique [0002] The Long term Evolution (LTE) system of mobile communication proposes the DRX working mode: the user equipment (User Equipment, UE) periodically monitors the control channel, and completes the data transmission (uplink, UL ) or receive (downlink, DL). Compared with the traditional continuous monitoring mode, DRX has the advantage of saving power, especially for UEs that are scheduled with a low number of times, it is more suitable. During the DRX process, the UE needs to send some uplink control information to support the transmission of uplink and downlink data. The uplink control information includes Channel Quality Indicator (CQI), Scheduling Request (Scheduling Request, SR) and Sounding Reference Sym...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
Inventor 李国庆谌丽高卓
Owner DATANG MOBILE COMM EQUIP CO LTD