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Wireless communication method and device

A technology of wireless communication and indicating information, which is applied in the field of communication, and can solve problems such as waste of power consumption, failure to meet the delay requirements of terminal equipment switching antennas, and uncertainty about when network equipment will be scheduled.

Pending Publication Date: 2021-02-05
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

However, since the terminal device is not sure when the network device schedules the data with the maximum number of MIMO layers, and once the data with the maximum number of MIMO layers is scheduled, its corresponding physical downlink shared channel (PDSCH) and scheduling physical downlink control The minimum scheduling delay between channels (physical downlink control channel, PDCCH) may not be able to meet the delay requirements of terminal equipment switching antennas
In this case, since the maximum number of MIMO layers is bound to the configuration of the BWP, the maximum number of MIMO layers used will not switch during the use of the same BWP. Therefore, the terminal device may always need to use the The number of antennas receives and transmits the control channel, resulting in waste of power consumption

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Embodiment Construction

[0116]The technical solution in this application will be described below in conjunction with the drawings.

[0117]The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, and wideband code division multiple access (wideband). code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, the future 5th generation (5G) system or new Wireless (new radio, NR), vehicle-to-X V2X), where V2X can include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to vehicle Infrastructure (vehicle to infrastructure, V2I), vehicle to pedestrian (V2P),...

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Abstract

The invention provides a wireless communication method and device, and the method comprises the steps that terminal equipment receives first indication information from network equipment, the first indication information is used for indicating a first MIMO maximum layer number N used when the terminal equipment carries out the wireless communication, and N is an integer greater than or equal to 1;and the terminal equipment performs wireless communication with the network equipment according to the first MIMO maximum layer number N, so that the MIMO maximum layer number required to be used bythe terminal equipment can be switched as required, and the terminal equipment can adjust the number of antennas actually used during communication based on realization. A waste of power consumption of the terminal equipment can be reduced while the transmission quality is ensured.

Description

Technical field[0001]The embodiments of the present application relate to the field of communication, and more specifically, to methods and devices for wireless communication.Background technique[0002]In the existing multiple-input multiple-output (MIMO) technology, the number of antennas used by a terminal device in a communication process is affected by the maximum MIMO layer used by the terminal device.[0003]Moreover, in the prior art, the maximum number of MIMO layers used by the terminal device is indicated by the relevant configuration information of the bandwidth part (BWP). For example, each BWP corresponds to a maximum number of MIMO layers. When BWP switching is performed, the MIMO The maximum number of layers is also switched.[0004]Therefore, when the currently used BWP corresponds to a large maximum number of MIMO layers, the terminal device needs to use a number of antennas not less than the maximum number of MIMO layers to receive or transmit signals to ensure that onc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0413H04L5/00H04W52/02
CPCH04B7/0413H04L5/0053H04W52/0209Y02D30/70H04W72/046H04L5/0023H04L5/0092H04W52/0216H04W52/028H04B7/0404H04B7/0697H04B7/0426H04B7/0857H04W72/044H04W72/23
Inventor 铁晓磊周涵薛丽霞花梦
Owner HUAWEI TECH CO LTD