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Method and device for feeding back channel information by scheduling terminal

A technology of feedback channel and feedback information, which is applied in the field of dispatching terminal feedback channel information

Active Publication Date: 2011-04-13
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention provides a method and device for scheduling terminal feedback channel information to solve the problem in the prior art that aperiodic feedback for the new CQI feedback structure is not realized

Method used

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  • Method and device for feeding back channel information by scheduling terminal
  • Method and device for feeding back channel information by scheduling terminal
  • Method and device for feeding back channel information by scheduling terminal

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Embodiment approach

[0082] In order to further reduce the control signaling overhead of the physical layer, users can be grouped in advance, and a group of users can be jointly scheduled. A possible implementation method is as follows:

[0083] (1) The base station notifies the terminal of the following information in advance through user-specific high-level signaling

[0084] For the uplink resource allocation information and orthogonal spreading sequence related information used for feedback, the specific information organization format refers to the description in the first case, the difference is that all the indication information here is sent through high-level signaling, and whether the frequency hopping is indicated information and user group information. Among them, the user group information includes: which joint scheduling group the user belongs to, the RNTI information allocated by the base station for the joint scheduling group, and the relative position of the user's scheduling info...

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Abstract

The invention discloses method and device for feeding back channel information by a scheduling terminal, which realizes the feedback of nonperiodic control channel information when the CQI (Channel Quality Indicator) information is transmitted by multi-subscriber. The method comprises the following steps of: sending a set channel information feedback content and the information in the feedback information type to a terminal by a base station; sending a scheduling command used for scheduling the terminal for channel information feedback to the terminal by the base station; and during passing through the scheduling command or before sending the scheduling command, sending the uplink resource information, the uplink demodulation pilot frequency sequence cycle shift information and the orthogonal sequence spread frequency information used for indicating the channel information fed back by the terminal to the terminal by the base station.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for scheduling terminal feedback channel information. Background technique [0002] In the third generation mobile communication (3GPP) R8 standard (Rel-8) long-term evolution system (LTE), a terminal (UE) needs to feed back channel quality information (Channel Quality Indicator, CQI) through an uplink channel. The base station (eNB) can perform downlink dynamic scheduling by using the CQI fed back by the UE. The CQI can be transmitted on the uplink control channel (PUCCH) and can be transmitted on the uplink shared data channel (PUSCH). In 3GPP LTE, a resource block (Physical resource block, PRB) is composed of 12 resource elements (resource element, RE). Each RE is 15KHz. [0003] figure 1 Describe how to feed back the CQI on the PUCCH. Each subframe (1 ms) consists of a series of OFDM symbols. Taking the normal CP (normal CP) length a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04W92/10
CPCH04W36/0088
Inventor 潘学明沈祖康林亚男肖国军
Owner DATANG MOBILE COMM EQUIP CO LTD
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