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Method and device of transmission control signaling

A technology of transmission control and transmission scheme, which is applied in the field of communication, can solve the problems of non-backward compatible unit carrier application scenario restrictions, reduce spectrum utilization rate, and not applicable to small packet services, etc., to avoid system capacity decline and increase spectrum utilization rate Effect

Active Publication Date: 2012-12-26
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] However, this downlink transmission mode 9 is not suitable for Small-Sized Traffic and high-speed mobile scenarios, that is, the application scenarios of non-backward compatible component carriers are limited, thus reducing spectrum utilization
In addition, when there are many non-backward compatible component carriers configured, the system capacity may also decrease due to the limited application scenarios of non-backward compatible component carriers

Method used

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  • Method and device of transmission control signaling
  • Method and device of transmission control signaling
  • Method and device of transmission control signaling

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0024] For convenience of description, the embodiment of the present invention will be described by taking LTE-A as an example. It should be understood that the embodiment of the present invention only uses LTE-A as an application scenario for illustration, but the embodiment of the present invention is not limited thereto, for example, subsequent versions of LTE-A can apply the method and method according to the embodiment of the present invention device....

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Abstract

Disclosed in the present invention are a transmission method and device for control signaling. The method comprises: determining that the physical downlink shared channel (PDSCH) of a non-backward-compatible component carrier is based on a non-pre-encoding matrix indicator (non-PMI) feedback transmission scheme of the user equipment response signal (UERS), or based on a UERS feedback transmission scheme of up to 8 layers; transmitting a downlink control information (DCI) to the user equipment, said DCI being used to indicate the determined PDSCH transmission scheme. The device comprises a determination module and a first transmission module. By means of determining that the PDSCH of a non-backward-compatible component carrier is based on a non-PMI feedback transmission scheme of the UERS, or based on a UERS feedback transmission scheme of up to 8 layers, and indicating same to the UE, the embodiments of the present invention are able to expand the application scenarios of the non-backward compatible carrier component, increase the spectrum utilization of the system, and also prevent a decrease in system capacity caused by restrictions on the application scenarios of the non-backward compatible carrier component.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for transmitting control signaling in the communication field. Background technique [0002] In a Long Term Evolution (referred to as "LTE") system or an enhanced Long Term Evolution (Long Term Evolution Advanced, referred to as "LTE-A") system, a user equipment (User Equipment, referred to as "UE") receives or Before sending service data, it is necessary to know the downlink control information (Downlink Control Information, "DCI" for short) configured by the base station (Evolved NodeB, "eNB" for short) to the user equipment. The DCI is carried by a physical downlink control channel (Physical Downlink Control Channel, "PDCCH" for short), and different DCI formats (DCI Format) may be used to represent different transmission modes (Transmission Mode). [0003] The Enhanced Long Term Evolution (LTE-A) system introduces carrier aggregation (Carrier Aggregation, referr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04B7/04H04B7/0417H04L5/0091H04W72/23
Inventor 李超君吕永霞吴强刘江华
Owner HUAWEI TECH CO LTD
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