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Method and device for transmitting downstream message in multiple carrier wave polymerizing system

A multi-carrier aggregation and carrier technology, applied in the field of communication, can solve the problem of unclear detection at the receiving end

Active Publication Date: 2013-04-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] The present invention provides a method and device for sending downlink information in a multi-carrier aggregation system, which is used to solve the problem of unclear detection at the receiving end due to the fact that the number of bits in different DCI formats under different bandwidths may be the same in the prior art question

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  • Method and device for transmitting downstream message in multiple carrier wave polymerizing system
  • Method and device for transmitting downstream message in multiple carrier wave polymerizing system
  • Method and device for transmitting downstream message in multiple carrier wave polymerizing system

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Embodiment Construction

[0045] In view of the problem existing in the prior art that the DCI length may be the same due to the different bandwidths of the carriers in the carrier aggregation system, resulting in the problem that the terminal side cannot be clearly identified, in the embodiment of the present invention, the configured downlink subframe sent by the base station side to the terminal side In the downlink control indication field included in , it is used to transmit more than one DCI information and carrier scheduling indication information corresponding to each DCI, so that the terminal side can distinguish DCI information of different carriers. The PDCCH of each downlink subframe can be used to bear the downlink control indication field.

[0046] see Figure 5 As shown, the method for sending downlink information in the embodiment of the present invention includes the following steps:

[0047] Step 501: The base station side configures a downlink subframe, wherein the physical downlink...

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Abstract

A method and a device for transmitting downlink information in a multi-carrier aggregation system are provided. The Method includes: a base station side sends a downlink subframe to a terminal side, wherein, the physical downlink control channel (PDCCH) in the downlink subframe is used for bearing the downlink control indicating information and the carrier scheduling indicating information corresponding to each downlink control indicating information. It solves the problem that the terminal side can not clearly identify the downlink control information (DCI) of different carriers, which is caused by that the length of DCI may be same due to the difference of the bandwidths of carriers in the carrier aggregation system.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for transmitting downlink information in a multi-carrier aggregation system. Background technique [0002] In the Long Term Evolution (LTE) system and previous wireless communication systems, there can only be one carrier in a cell, and the maximum bandwidth in the LTE system is 20MHz. [0003] In an advanced long-term evolution (LTE Advanced, LTE-A) system, the peak rate of the system is greatly improved compared with LTE, and the bandwidth of 20 MHz cannot meet this requirement. Therefore, the LTE-A system needs to expand the bandwidth, include multiple carriers in an LTE-A cell, and introduce Carrier Aggregation (Carrier Aggregation, CA) technology, that is, in the same cell, multiple continuous or discontinuous carriers are concentrated Together, they serve terminals at the same time when needed to provide a required rate. These carriers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/06H04W72/12
CPCH04L5/001H04L5/0094H04L5/0064H04W72/1289H04L5/0053H04W72/23H04W72/0453
Inventor 朱亚军潘学明赵锐肖国军沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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