Huawei Technologies Co., Limited

Hantao Li

Min Huang

Zhenyu Li

Jie Ma

Sha Ma

Weiliang Zhang

Zhijun Li

Chuan Liu

Lei Hu

Qin Chen

Jinxia Han

Zhanyang Ren

A data transmission method and apparatus using a clear channel assessment (CCA) detection threshold are disclosed. The method includes: obtaining, by a base station, at least one CCA detection threshold; determining a current CCA detection threshold from the at least one CCA detection threshold; determining transmit power of to-be-sent data based on the current CCA detection threshold; and sending the to-be-sent data to a target terminal based on the transmit power.

Data transmission method and apparatus using a clear channel assessment (CCA) detection threshold

This application provides a downlink control information (DCI) obtaining method and apparatus. The method includes: determining, by a terminal, predefined search space based on aggregation levels supported by the terminal, where the predefined search space includes search space corresponding to at least one of an aggregation level 16 and an aggregation level 24; and performing, blind detection to obtain the DCI. Alternatively, the method includes: determining, by a terminal, blind detection search space of the terminal from predefined search space based on a quantity of resource blocks (RBs) occupied by an enhanced physical downlink control channel (EPDCCH) and aggregation levels supported by the terminal, where the predefined search space includes corresponding search space obtained when the RB quantity is 16; and performing, blind detection to obtain the DCI. According to this application, a downlink coverage gain can be increased, and diversity of implementations of downlink coverage enhancement can be improved.

Downlink control information processing method and apparatus

An access method and system, a user equipment, and a network side device are provided. The method includes: receiving, by a user equipment, a first message that carries an identifier of a second network access point, where the second network access point can perform air interface offloading on a first network in which a user equipment is currently located; and when the first message carries identifiers of a plurality of second network access points, selecting, by the user equipment, one second network access point from the plurality of second network access points according to first auxiliary information, and accessing the selected second network access point. By adopting the technical solutions in the embodiments of the present invention, an access delay can be effectively shortened, and access efficiency can improved, thereby effectively implementing offloading.

Access method and system, user equipment, and network side device

The present disclosure describes a video data processing method and a device. An example method includes: determining, by a network device, a video bitrate, a volume of scheduled video data, and video-played duration of a video service of a terminal; determining, by the network device, a buffer time of the video service of the terminal based on the video bitrate, the volume of scheduled video data, and the video-played duration; and performing, by the network device, video data scheduling on the terminal based on the buffer time.

Video data processing method and device

A method for sending a channel reservation signal and a base station, related to the field of communications technologies, includes: detecting, by a base station, whether a system signal is received on an unlicensed channel; and sending, by the base station, a channel reservation signal on the unlicensed channel to reserve the unlicensed channel based on the base station detecting that the system signal is received on the unlicensed channel.

Method for sending channel reservation signal and base station

Embodiments of the present disclosure provide a method that includes receiving, by supporting user equipment UE, a pairing request message sent by a network side; and acquiring, by the supporting UE, a friend UE short-distance identifier list when self supporting capability information of the supporting UE indicates that the supporting UE supports a friend UE. The method also includes performing, by the supporting UE, identity authentication on the benefitted UE according to the friend UE short-distance identifier list and a short-distance identifier of a benefitted UE that is carried in the pairing request message. The method also includes performing, by the supporting UE, pairing processing with the benefitted UE, and sending a pairing response message to the network side, if the benefitted UE has been authenticated.

Method, apparatus, and system for establishing cooperative communication

Embodiments of the present invention provide a method for controlling a multimode radio communications system, a control server, and a terminal. The method includes: establishing, by the control server, a basic link between the terminal and any one communications system in the multimode radio communications system according to first settings; selecting, by the control server according to second settings, a communications system from the multimode radio communications system as a service communications system for transmission of each service of the terminal; and sending, by the control server, control information to the terminal on the basic link, where the control information is used to indicate the service communications system for transmission of each service of the terminal. The embodiments of the present invention improve a utilization rate of radio resources and user experience in a multimode radio communications environment.

Methods for controlling multimode radio communications system, control server and terminal

A method for controlling a link in cooperative communication includes: confirming that a beneficial user equipment and a pre-supportive user equipment have a capability of performing cooperative communication; separately sending a first-hop link setup request to the beneficial user equipment and the pre-supportive user equipment, so that the beneficial user equipment and the pre-supportive user equipment establish first-hop physical links according to the first-hop link setup request; separately receiving initial measurement information that is sent by the pre-supportive user equipment and/or the beneficial user equipment after the pre-supportive user equipment and/or the beneficial user equipment performs initial measurement on the first-hop physical link; according to the initial measurement information, selecting a supportive user equipment of the beneficial user equipment from the pre-supportive user equipment or selecting a beneficial user equipment that is supported by the supportive user equipment.

Method, apparatus, and system for controlling link in cooperative communication

Embodiments of the present invention provide an access method and system, a user equipment, and a network side device. The method includes: receiving, by a user equipment, a first message that carries an identifier of a second network access point, where the second network access point can perform air interface offloading on a first network in which a user equipment is currently located; and when the first message carries identifiers of a plurality of second network access points, selecting, by the user equipment, one second network access point from the plurality of second network access points according to first auxiliary information, and accessing the selected second network access point. By adopting the technical solutions in the embodiments of the present invention, an access delay can be effectively shortened, and access efficiency can improved, thereby effectively implementing offloading.

In the present invention, a network device acquires terminal proximity relationship information and determines, according to the proximity relationship information, a beneficed terminal of multiple UE cooperative communication and at least one adjacent terminal of the beneficed terminal, the network device acquires channel quality information of the beneficed terminal and the at least one adjacent terminal of the beneficed terminal, makes, according to the channel quality information of the beneficed terminal and the at least one adjacent terminal of the beneficed terminal, a decision on whether to trigger the multiple UE cooperative communication for the beneficed terminal, and determines a supporting terminal of the multiple UE cooperative communication for the beneficed terminal according to the acquired channel quality information of the beneficed terminal and the at least one adjacent terminal of the beneficed terminal when it is decided that the multiple UE cooperative communication needs to be triggered.

Method and device for triggering multiple UE cooperative communication

Embodiments of the present disclosure provide a method that includes receiving, by supporting user equipment UE, a pairing request message sent by a network side; and acquiring, by the supporting UE, a friend UE short-distance identifier list when self supporting capability information of the supporting UE indicates that the supporting UE supports a friend UE. The method also includes performing, by the supporting UE, identity authentication on the benefitted UE according to the friend UE short-distance identifier list and a short-distance identifier of a benefitted UE that is carried in the pairing request message. The method also includes performing, by the supporting UE, pairing processing with the benefitted UE, and sending a pairing response message to the network side, if the benefited UE has been authenticated.

Embodiments of this application relate to a method for controlling transmission, a network device, and a terminal. The method includes: determining, by a first radio access network device according to a service transmission condition of a terminal in a first single-mode wireless communications system, that a multimode wireless communications system comprises at least two wireless communications systems transmits a service for the terminal; and sending, by the first radio access network device, first control information to the terminal, where the first control information includes link information of the at least two wireless communications systems, so that the terminal switches a service, which is transmitted in the first single-mode wireless communications system, to the multimode wireless communications system according to the link information of the at least two wireless communications systems. In this way, resource utilization of a wireless communications network is improved.

Method for controlling transmission, network device, and terminal

Method for controlling multimode radio communications system, control server and terminal

Embodiments provide a resource allocation method, apparatus and system. The resource allocation method is used for a base station. The method includes acquiring a current resource indication of a cell, and generating a resource adjustment indication according to the current resource indication of the cell. The resource adjustment indication is used for instructing a mobility management entity MME to adjust a discovery resource allocated to the cell. The method also includes generating a resource adjustment request, where the resource adjustment request includes the resource adjustment indication. The method also includes sending the resource adjustment request, so that the MME adjusts the discovery resource of the cell according to the resource adjustment request.

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Beijing, China

Hantao Li