Abstract:
Embodiments of the present invention provide a method and a device for transmitting downlink data in multiple UEs cooperative communication. A base station selects a benefitted user equipment UE, where the benefitted UE and a supporting UE are UEs in a closed cooperative group, each data radio bearer of each UE in the cooperative group corresponds to a logical channel identifier LCID, and the LCID is unique in the cooperative group; the base station generates a media access control packet data unit MAC PDU, where the MAC PDU comprises data to be sent by a data radio bearer of the benefitted UE, and a LCID corresponding to the data radio bearer, and the base station sends the MAC PDU to the supporting UE. The above solutions achieve a method of multiple UEs cooperative communication for synthesizing on the MAC layer.
Abstract:
Embodiments of the present invention provide a cooperative communication method and system, an access network device, and a user equipment. The method includes, when a access network device receives downlink data belonging to a first user equipment UE, if it is determined that a supporting UE in a support list of the first UE cannot serve as a current supporting UE of the downlink data, establishing a cooperative communication relationship between a second UE and the first UE, that is, setting the second UE as the current supporting UE of the first UE. The second UE is another UE except the first UE and the supporting UE in the support list of the first UE. The downlink data is sent to the second UE, so that the second UE sends the downlink data to the first UE.
Abstract:
Embodiments of the present invention provide a packet processing method, which is applied to a first node. The method includes: obtaining N first packets, where N is an integer greater than or equal to 1, and each of the first packets includes a first label; and sending the N first packets in a sending period corresponding to the first label.
Abstract:
This application discloses a downlink channel reconstruction method and apparatus. In one embodiment, the method includes: sending, by a base station, multiple different weighted pilot signals to a terminal, where each of the weighted pilot signals includes a product of a pilot signal and a weighting matrix; receiving, by the base station, multiple different optimal code words returned by the terminal, where each of the optimal code words is obtained based on a channel estimation of a weighted pilot signal; and reconstructing, by the base station, a downlink channel according to the multiple different optimal code words. According to the foregoing method, a quantization error can be reduced, so that a beam direction of a reconstructed channel correctly points to the terminal.
Abstract:
Embodiments of the present invention relate to the communications field, and provide a radio link establishment method, apparatus, and system, which are used to save radio link overhead. The method includes: determining a first supporting user equipment UE; determining a first beneficial UE served by the first supporting UE; configuring synthesis layer information of the first supporting UE and first synthetic bearer information of the first supporting UE for the first supporting UE according to radio bearer information of the first beneficial UE; configuring synthesis layer information of the first beneficial UE for the first beneficial UE according to the radio bearer information of the first beneficial UE; and configuring synthesis layer information of the base station according to the radio bearer information of the first beneficial UE. The present invention is applicable to a scenario of communication between the UE and the base station.
Abstract:
A method includes: determining, according to a measurement report of agent UE and a measurement report of UE in a UE group that are sent by the agent UE, whether the agent UE and the UE in the UE group need to be handed over; when the agent UE and at least one piece of UE in the UE group need to be handed over, sending a handover request message to a T-eNB; receiving a handover configuration message sent by the T-eNB and sending the handover configuration message to the agent UE; and receiving a context release message sent by the T-eNB, and releasing context resources of the agent UE and the to-be-handed-over UE.
Abstract:
A user equipment (UE) communication method, a device, and a communications system are provided. A first UE sends a notification message to a cellular network access device, wherein the notification message indicates that the first UE requests to be a beacon device. The first UE receives, from the cellular network access device, a message indicating that the first UE is the beacon device. The first UE sends detection signal, wherein the detection signal is for a second UE to detect the detection signal.
Abstract:
The present invention discloses a multiple users cooperative communication (MUCC) method and system. The main idea of the present invention is as follows: through multiple users cooperative communication between APs, data to be sent to a UE by an eNB may be sent to a support AP at first, and then the support AP sends the data to the UE; and when the support AP is in a poor network environment, the eNB may send the data to other APs near the support AP, and finally forward the data to the support AP through one or more times of forwarding between other APs. The present invention has a multiuser diversity gain without increasing the complexity and power consumption of the UE; furthermore, a laying cost of wired backhaul can be reduced and reliability and transmission efficiency of MUCC can be improved.
Abstract:
The present invention is applicable to the field of communications and provides an MBMS technology-based emergency communication method and apparatus. The method includes: receiving information for establishing air interface bearer, where the information is sent by a terrestrial radio access network E-UTRAN/UTRAN, the information indicates that the air interface bearer has a highest scheduling priority and is not stopped and instructs a user equipment to monitor the air interface bearer in real time; establishing the air interface bearer with the E-UTRAN/UTRAN, and monitoring the air interface bearer in real time; and receiving emergency information that is sent by the E-UTRAN/UTRAN from the air interface bearer. Because the user equipment monitors the MBMS communication channel in real time, a second-level delay of MBMS communication is eliminated, so that MBMS technology-based communication meets a delay requirement of emergency communication.
Abstract:
A data sending method is provided. Media access control MAC payloads corresponding to a plurality of receiving devices are encapsulated in one MAC packet data unit (PDU), where the MAC PDU includes a header, the MAC payloads and identification information of each receiving device in the plurality of receiving devices; and the header includes a plurality of subheaders, the plurality of subheaders is subheaders respectively corresponding to a MAC payload corresponding to each receiving device, the MAC payload corresponding to each receiving device includes a MAC control element (CE) and/or a MAC service data unit (SDU), and the identification information is used for identifying each receiving device. The MAC PDU is sent. In the foregoing solutions, transmission of a MAC PDU during multi-user cooperated communication is implemented.