WO2017113113A1 - 终端设备、网络设备、数据传输方法和无线通信系统 - Google Patents
终端设备、网络设备、数据传输方法和无线通信系统 Download PDFInfo
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- WO2017113113A1 WO2017113113A1 PCT/CN2015/099529 CN2015099529W WO2017113113A1 WO 2017113113 A1 WO2017113113 A1 WO 2017113113A1 CN 2015099529 W CN2015099529 W CN 2015099529W WO 2017113113 A1 WO2017113113 A1 WO 2017113113A1
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- terminal device
- network device
- network
- channel information
- downlink channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0097—Relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
Definitions
- the present application relates to the field of wireless communications technologies, and in particular, to a terminal device, a network device, a data transmission method, and a wireless communication system.
- multi-antenna technology can be adopted, and the spatial domain is expanded by increasing the system capacity by using multiple antennas at the transmitting end and the receiving end simultaneously.
- Single User-Multiple Input Multiple Output is one of the multi-antenna technologies.
- multiple data streams are pre-processed by the base station, and multiple antennas of the base station transmit using the same time-frequency resources.
- the signal sent by the base station is received by multiple antennas on a user equipment (User Equipment, UE).
- the pre-processing of the base station uses the downlink channel information of the downlink channel between the transmitting antenna of the base station and the receiving antenna of the UE, so that the multi-channel data streams received by the UE have less interference and can be correctly received by the UE.
- MU-MIMO Multi User-Multiple Input Multiple Output
- multiple data streams are transmitted to at least 2 UEs (UE1 and UE2).
- multiple data streams are pre-processed by the base station, and multiple antennas of the base station are transmitted using the same time-frequency resource.
- the antenna of each UE receives the data stream sent to itself.
- the pre-processing of the base station uses the downlink channel information between the transmitting antenna of the base station and the receiving antenna of each UE, so that there is less interference between the data streams received by different UEs, and each UE can correctly receive and send it to itself.
- the data stream uses the downlink channel information between the transmitting antenna of the base station and the receiving antenna of each UE, so that there is less interference between the data streams received by different UEs, and each UE can correctly receive and send it to itself.
- the base station can simultaneously send multiple data streams to multiple UEs, while SU-MIMO can only send multiple data streams to a single UE, and MU-MIMO usually has a ratio of SU-MIMO. More superior downlink throughput performance.
- the MU-MIMO may be degraded to SU-MIMO, and the base station cannot use the MU-MIMO technology to deliver the data stream, or even if the MU-MIMO technology can be used. Data flow, but the overall throughput performance of the communication system is not high.
- a terminal device, a network device, and a data transmission method are provided to implement the MU-MIMO technology to send multiple data streams to a terminal device, thereby improving the throughput of the entire communication system.
- the application provides a first terminal device, including:
- a transceiver module configured to receive, by the second terminal device, a data stream of the first terminal device
- a processing module configured to process a data stream received by the receiving module
- the second terminal device is configured to receive, by the network device that serves the first terminal device, a data flow of the first terminal device that is sent by the network device by using a multi-user-multiple-input multiple-output MU-MIMO technology. .
- the second terminal device when the network device sends the data flow of the first terminal device to the first terminal device, the second terminal device also participates in the downlink data transmission of the first terminal device of the MU-MIMO, even if only the first
- the channel between the second terminal device and the network device is not wasted but is used to assist in transmitting the data stream of the first terminal device.
- the network device can be prevented from using the MU-MIMO technology to send data streams to multiple terminal devices, which causes the MU-MIMO degradation to occur in the SU-MIMO problem, thereby improving the throughput of the communication system.
- the processing module is further configured to determine the second terminal device before the transceiver module receives the data stream of the first terminal device.
- the first terminal device Determining, by the first terminal device, the second terminal device, where the first terminal device can learn Which terminal device assists in forwarding the data stream of the first terminal device, so that the data stream of the first terminal device is received from the terminal device in a targeted manner.
- the transceiver module is further configured to:
- the processing module determines the second terminal device, before processing the data stream received by the transceiver module, sending a first auxiliary notification message to the network device;
- the first auxiliary notification message is used to notify the network device that the second terminal device receives data of the first terminal device from the network device.
- the second terminal device notifies the network device that the data stream of the first terminal device can be received by the network device, so that the network device can learn the terminal device that can send the data stream to the first terminal device.
- the transceiver module is further configured to: before the processing module determines the second terminal device, send an auxiliary request message to the at least one terminal device, where the auxiliary request message is used to query whether the at least one terminal device can receive the a data stream of the terminal device, and transmitting the received data stream of the first terminal device to the first terminal device;
- the processing module is specifically configured to: determine, by the terminal device that sends the auxiliary response message in the at least one terminal device, the second terminal device, where the auxiliary response message is used to notify the first terminal device to issue the auxiliary
- the terminal device responding to the message can receive the data stream of the first terminal device and send the received data stream of the first terminal device to the first terminal device.
- the other terminal device is inquired by the first terminal device, so that the first terminal device determines the second terminal device that can receive the data stream for itself.
- the transceiver module is further configured to: before the processing module determines the second terminal device, receive the And a first control message sent by the network device, where the first control message instructs the first terminal device to determine the second terminal device.
- the first terminal device is triggered by the network device by sending an indication of the first control message to determine a second terminal device that assists in forwarding the data flow of the first terminal device.
- the transceiver module is further configured to:
- the network device Before receiving the data flow of the first terminal device from the second terminal device, transmitting downlink channel information of the second terminal device to the network device, where downlink channel information of the second terminal device is used for The network device sends the data stream of the first terminal device to the second terminal device by using the MU-MIMO technology.
- the first terminal device sends the downlink channel information of the second terminal device, and the network device can still obtain the second terminal device if the second terminal device cannot send the downlink channel information to the network device.
- the downlink channel information is used to send the data stream of the first terminal device to the second terminal device by using the MU-MIMO technology according to the obtained downlink channel information of the second terminal device.
- the transceiver module is further configured to:
- the first terminal device is triggered to acquire downlink channel information of the second terminal device by receiving a control message of the network device.
- the transceiver module is further configured to:
- the second terminal device After the processing module determines the second terminal device, the second terminal device is notified to send the downlink channel information of the second terminal device to the network device.
- the transceiver module is further configured to:
- the downlink channel information of the device is used by the network device to send the data flow of the first terminal device to the second terminal device by using a MU-MIMO technology.
- the network device may obtain the first according to the obtained The downlink channel information of the terminal device is used to reduce interference caused by the downlink channel of the first terminal device when the network device sends the data flow of the first terminal device to the second terminal device by using the MU-MIMO technology.
- the second terminal device has a data transmission requirement, or the second terminal device has no data transmission demand.
- the second terminal device may receive the downlink data stream of the first terminal device in addition to receiving the downlink data stream of the second terminal device, and may fully utilize the data of the second terminal device. Transmission capacity to increase the overall throughput of the communication system;
- the MU-MIMO is actually not implemented. If the second terminal device does not have a data transmission requirement, the second terminal device can transmit the downlink data stream of the first terminal device, so that there are at least two terminals.
- the device implements MU-MIMO, utilizes the data transmission capability of the second terminal device, and improves the overall throughput of the communication system.
- the application provides a second terminal device, including:
- a processing module configured to determine, by the second terminal device, a data stream of the first terminal device that is sent by the network device by using a MU-MIMO technology, from a network device that serves the first terminal device;
- a receiving module configured to receive a data flow of the first terminal device that is sent by the network device by using a MU-MIMO technology
- a sending module configured to send, by the receiving module, the data stream of the first terminal device to the first terminal device.
- the second terminal device participates in the downlink data transmission of the first terminal device of the MU-MIMO, even if only the data flow of the first terminal device or the data transmission amount of the second terminal device is small,
- the channel between the two terminal devices and the network device is not wasted but is used to assist the transmission of the data stream of the first terminal device, so that the network device cannot use the MU-MIMO technology to send data streams to multiple UEs, thereby causing the MU.
- - MIMO degradation is the emergence of the SU-MIMO problem, thereby increasing the throughput of the communication system.
- the data transmission requirements of multiple UEs are avoided at the same time, but some UEs have small data transmission requirements, and do not fully utilize the transmission capability of the UE itself with less data transmission requirements, thereby improving the throughput of the communication system.
- the sending module is further configured to: send the second to the network device before the receiving module receives the data flow of the first terminal device
- the downlink channel information of the terminal device, the downlink channel information of the second terminal device is used by the network device to send the data flow of the first terminal device to the second terminal device by using a MU-MIMO technology.
- the second terminal device sends its own downlink channel information to the network device, regardless of whether the second terminal device has a data transmission requirement, so that the network device can determine whether it can be determined according to the downlink channel information of the second terminal device.
- the MU-MIMO technology is used to deliver data streams to the first terminal device and the second terminal device in parallel.
- the receiving module is further configured to: send, by the sending module, the downlink of the second terminal device to the network device Before receiving the channel information, receiving the notification sent by the first terminal device or the network device, where the notification is used to instruct the second terminal device to send downlink channel information of the second terminal device to the network device.
- the sending module is specifically configured to:
- the processing module Confirming, by the processing module, that the first terminal device sends the first terminal to the network device After the downlink channel information of the terminal device, the downlink channel information of the second terminal device is sent to the network device, where the downlink channel information of the second terminal device is used by the network device to pass the MU-MIMO technology The second terminal device sends the data stream of the first terminal device.
- the second terminal device after the second terminal device learns that the first terminal device sends the downlink channel information of the first terminal device to the network device, the second terminal device sends its own downlink channel information to the network device, so as to prevent the second terminal device from sending useless downlink.
- the channel information wastes the processing capability of the second terminal device and occupies the uplink resource between the second terminal device and the network device.
- the sending module is further configured to: before the sending module sends the data stream of the first terminal device received by the receiving module to the first terminal device, send a second auxiliary notification message to the network device ;
- the second auxiliary notification message is configured to notify the network device to receive the data flow of the first terminal device that is sent by the network device by using the MU-MIMO technology, and send the data flow of the first terminal device to the The first terminal device is described.
- the second terminal device has a data transmission requirement or no data transmission requirement.
- the second terminal device may receive the downlink data stream of the first terminal device in addition to receiving the downlink data stream of the second terminal device, and may fully utilize the data of the second terminal device. Transmission capacity to increase the overall throughput of the communication system;
- the second terminal device does not have a data transmission requirement, according to the current LTE system processing mode, when only the first terminal device has a data transmission requirement, the MU-MIMO is actually not implemented. It is possible to fall back to SU-MIMO, and in this possible implementation, even if the second terminal device does not have a data transmission requirement, the second terminal device can be used to transmit the downlink data stream of the first terminal device, so that there are multiple terminal devices. With data transmission requirements, MU-MIMO can be realized, and the data transmission capability of the second terminal device is utilized, and the overall swallowing of the communication system is improved. The amount of spit.
- the application provides a network device, including:
- a processing module configured to determine a second terminal device, where the second terminal device is configured to receive, by the network device, a data stream of the first terminal device that is sent by the network device by using a MU-MIMO technology;
- the transceiver module is configured to send the data stream of the first terminal device to the second terminal device by using a MU-MIMO technology.
- the second terminal device participates in the downlink data transmission of the first terminal device of the MU-MIMO, even if only the data flow of the first terminal device or the data transmission amount of the second terminal device is small,
- the channel between the two terminal devices and the network device is not wasted but is used to assist the transmission of the data stream of the first terminal device, so that the network device cannot use the MU-MIMO technology to send data streams to multiple UEs, thereby causing the MU.
- - MIMO degradation is the emergence of the SU-MIMO problem, thereby increasing the throughput of the communication system.
- the data transmission requirements of multiple UEs are avoided at the same time, but some UEs have small data transmission requirements, and do not fully utilize the transmission capability of the UE itself with less data transmission requirements, thereby improving the throughput of the communication system.
- the transceiver module is further configured to: before the processing module determines the second terminal device, send a first control message to the first terminal device, where the first control message instructs the first terminal device to determine the Receiving, by the first terminal device, a first auxiliary notification message sent by the first terminal device in response to the first control message, where the first auxiliary notification message is used to notify the network device Receiving, by the second terminal device, data of the first terminal device from the network device;
- the processing module is specifically configured to: determine the second terminal device according to the notification message received by the transceiver module.
- the transceiver module is further configured to: before the determining, by the processing module, the second terminal device, receive a second auxiliary notification message sent by the second terminal device, where the second auxiliary notification message is used to notify the network device
- the second terminal device is configured to receive the data flow of the first terminal device that is sent by the network device by using the MU-MIMO technology, and send the data flow of the first terminal device to the first terminal device;
- the processing module is specifically configured to: determine the second terminal device according to the second auxiliary notification message.
- the transceiver module is further configured to: pass the data flow of the first terminal device to the MU Before the MIMO technology is sent to the second terminal device,
- the second terminal device receives downlink channel information of the second terminal device that is sent by the first terminal device in response to the second control message, where downlink channel information of the second terminal device is used by the network device to use MU-MIMO technology
- the second terminal device sends a data stream of the first terminal device.
- the first terminal device sends the downlink channel information of the second terminal device, and the network device can still obtain the second terminal device if the second terminal device cannot send the downlink channel information to the network device.
- the downlink channel information is used to send the data stream of the first terminal device to the second terminal device by using the MU-MIMO technology according to the obtained downlink channel information of the second terminal device.
- the transceiver module is further configured to:
- the downlink channel information of the second terminal device is used by the network device to send the data flow of the first terminal device to the second terminal device by using a MU-MIMO technology.
- the transceiver module is further configured to:
- the downlink channel information of the first terminal device is used by the network device to send the data flow of the first terminal device to the second terminal device by using a MU-MIMO technology.
- the possible implementation manner is that the network device sends the data flow of the first terminal device to the second terminal device by using the MU-MIMO technology according to the obtained downlink channel information of the first terminal device.
- the second terminal device has a data transmission requirement, or the second terminal device has no data transmission. demand.
- the second terminal device may receive the downlink data stream of the first terminal device in addition to receiving the downlink data stream of the second terminal device, and may fully utilize the data of the second terminal device. Transmission capacity to increase the overall throughput of the communication system;
- the MU-MIMO is actually not implemented. It is possible to fall back to SU-MIMO, and in this possible implementation, even if the second terminal device does not have a data transmission requirement, the second terminal device can be used to transmit the downlink data stream of the first terminal device, so that there are multiple terminal devices. With data transmission requirements, MU-MIMO can be realized, and the data transmission capability of the second terminal device is utilized, thereby improving the overall throughput of the communication system.
- the first terminal to the third aspect and their respective possible implementations respectively provide a first terminal device, a second terminal device, and a network device.
- the functions of the respective functional modules can be used as the steps of the data transmission method respectively performed by the first terminal device, the second terminal device, and the network device, and are not described herein again.
- FIG. 1 is a schematic diagram of a base station adopting SU-MIMO technology for downlink data transmission
- FIG. 2 is a schematic diagram of a base station adopting MU-MIMO technology for downlink data transmission
- FIG. 3 is a network architecture diagram of a wireless network provided by the present application.
- 4A to 4D are schematic diagrams of a terminal device group in the present application.
- FIG. 5 is a flowchart of a data flow sent by a network device in the present application, and a data flow forwarded by the terminal device;
- FIG. 6 is a schematic diagram of a simplified scenario to which the present application is applicable.
- FIG. 7 is a schematic structural diagram of a first terminal device provided by the present application.
- FIG. 8 is a schematic structural diagram of a first terminal device provided by the present application when a specific implementation manner is adopted;
- FIG. 9 is a schematic structural diagram of a second terminal device provided by the present application.
- FIG. 10 is a schematic structural diagram of a second terminal device provided by the present application when a specific implementation manner is adopted;
- FIG. 11 is a schematic structural diagram of a network device provided by the present application.
- FIG. 12 is a schematic structural diagram of a network device provided by the present application when a specific implementation manner is adopted.
- FIG. 3 is a schematic diagram showing the network architecture of a wireless network system to which the present application is applied.
- the wireless network system 330 comprises: a network device 303, the first terminal device 301 (FIG identified as T), and N second terminal device 302 (FIG identified as A 1, ... A i , ...A N ), N is a positive integer.
- variable i is used instead of any one of 1 to N, and thus the following statement applies to the case where the variable i is applied to any one of 1 to N for each case of the variable i.
- FIG. 3 For simplicity of illustration, only one network device 303 is shown in FIG. 3, but in practice, in the wireless network system 30, there may be one or more network devices 303; and only one first terminal device is shown in FIG. 301, but in practice, in the wireless network system 30, there may be one or more first terminal devices 301.
- the second terminal device 302 can directly communicate with the first terminal device 301 without forwarding through the network device 303.
- the second terminal device 302 may be based on a Device to Device (D2D) protocol communication of the 3rd Group Partner Project (3GPP), or may be based on the Institute of Electrical and Electronics Engineers (Institute of Electrical and Electronics Engineers (IEEE) Wireless Fidelity (WiFi) protocol communication.
- D2D Device to Device
- 3GPP 3rd Group Partner Project
- IEEE Institute of Electrical and Electronics Engineers
- WiFi Wireless Fidelity
- the communication quality may be better than the long-distance communication between the network device 303 and the second terminal device 302, specifically, The data transmission between the second terminal device 302 and the first terminal device 301 may have a higher data transmission rate and/or between the network device and the second terminal device 302 than between the network device and the first terminal device 301. Lower transmit power.
- the communication system of the wireless communication between the first terminal device 301 and the network device 303, and between the second terminal device 302 and the network device 303 includes but is not limited to:
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- CDMA Code Division Multiple Access
- TD-SCDMA Wideband Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- FDD LTE Frequency Division Duplexing-Long Term Evolution
- LTE-advanced Long Term Evolution-Advanced
- PHS Personal Handy-phone System
- WiFi Wireless Fidelity
- WiMAX Worldwide Interoperability for Microwave Access
- the first terminal device 301 and the second terminal device 302 may be a wireless terminal, a wireless local area network access point or a relay node.
- the wireless terminal can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem.
- the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
- RAN Radio Access Network
- it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network.
- the wireless terminal may also be referred to as a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, a Remote Terminal, and an Access Terminal.
- Access Terminal User Terminal
- User Agent User Device
- User Equipment User Equipment
- the network device 303 may include a base station, or a radio resource management device for controlling the base station, or a packet
- the base station and the radio resource management device for controlling the base station can be a macro station; the base station can also be a small station, such as a small cell access point, a pico cell access point, and the like.
- the base station may also be a home base station, such as a Home NodeB (HNB), a Home eNodeB (HeNB), or the like.
- Network device 303 can also be a relay node.
- the network device 303 in the wireless network system 30 provided by the embodiment of the present invention may be an evolved Node B (eNodeB), a first terminal device 301, and a
- the second terminal device 302 may be a UE;
- the network device 303 in the wireless network system 30 provided by the embodiment of the present invention may include: a Node B (NodeB) and/or a radio network controller (Radio Network)
- the first terminal device 301 and the second terminal device 302 may be UEs.
- the network device 303 may include a Base Transceiver Station (BTS) and/or The base station controller (BSC); the first terminal device 301 and the second terminal device 302 may be a mobile station (MS); for the WiFi system, the network device 303 may include: an access point (Access Point, The AP) and/or the Access Controller (AC), the first terminal device 301 and the second terminal device 302 may be stations (STAs).
- BTS Base Transceiver Station
- BSC Base Transceiver Station Controller
- MS mobile station
- the network device 303 may include: an access point (Access Point, The AP) and/or the Access Controller (AC), the first terminal device 301 and the second terminal device 302 may be stations (STAs).
- the first terminal device 301 receives the first group data stream D 1 and the N second group data streams D 21 , D transmitted by the N second terminal devices 302. 2i , ... D 2N , the N second sets of data streams are N-series data streams D 31 , ... D 3i transmitted by the N second terminal devices in parallel according to the network device 303 by using the MU-MIMO technology, ...D 3N is generated after processing.
- the N third set of data streams D 31 , ... D 3i , ... D 3N and the N second set of data streams D 21 , ... D 2i , ... D 2N may be the same or different.
- the second terminal device A i receives the third group of data streams D 3i from the network device 303, and generates D 2i from D 3i and transmits D 2i to the first terminal device T.
- the N second group data streams D 21 , ... D 2i , ... D 2N and N third sets of data streams D 31 , ... D 3i , ... D 3N may behave as different data streams, but contain information transmitted to the first terminal device 301 regardless of the manifestation. Both are data streams that are sent to the first terminal device 301.
- the terminal device may be managed by a group.
- the first terminal device 301 and the second terminal device 302 may be managed according to the D2D protocol specification specified by the 3GPP.
- the D2D protocol specification refer to the D2D protocol specification.
- the first terminal device 301 (T) and the N second terminal devices 302 (A 1 , . . . A i , . . . , A N ) belong to the first terminal device group Group 1 as shown in FIG. 4A . All terminal devices in Group1 except the first terminal device 301 satisfy the auxiliary condition. Thus, the N second terminal devices 302 are satisfied with the auxiliary conditions.
- the N second terminal devices 302 (A 1 , . . . A i , . . . , A N ) belong to the second terminal device group Group 2 , and the first terminal device 301 ( T ) does not belong to the group 2 , as shown in FIG. 4B . All terminal devices in Group2 satisfy the auxiliary conditions.
- the first terminal device 301 belongs to the N different third terminal device groups (TG 1 , . . . , TG i , . . . TG N ), wherein the third terminal device group TG i corresponds to the second terminal device 302A i , such as Figure 4C shows.
- the terminal device in the third terminal device group TG i satisfies the target condition.
- the first terminal device 301 belongs to the N fourth terminal device groups (TAG 1 , . . . , TAG i , . . . , TAG N ), wherein the fourth terminal device group TAG i includes the second terminal device 302A i , as shown in FIG. 4D . Shown.
- the other terminal devices other than the second terminal device 302A i of the fourth terminal device group TAG i satisfy the target condition, and thus, the first terminal device 301 satisfies the target condition.
- auxiliary conditions may include one or more of the following conditions:
- the data transmission rate with the first terminal device 301 is greater than the first data transmission rate threshold
- the distance from the first terminal device 301 is less than the first distance threshold
- the remaining charge is greater than the charge threshold.
- the above target conditions may include one or more of the following conditions:
- the data transmission rate with the second terminal device 302A i is greater than the second data transmission rate threshold
- the distance from the second terminal device 302A i is less than the second distance threshold.
- the foregoing auxiliary conditions and target conditions can ensure that the second terminal device 302 is the first terminal device 301. Forward data streams reliably and efficiently.
- N second terminal devices A 1 , ... A i , ... A N have data transmission requirements; N second terminal devices A 1 , ... A i , ... A N partial data transmission requirements; or N second Terminal devices A 1 , ... A i , ... A N have no data transmission requirements.
- FIG. 5 is a schematic flowchart of the network device 303 in the present application transmitting a data stream to the N second terminal devices 302 by using the MU-MIMO technology, and forwarding the data stream by the N second terminal devices 302 to the first terminal device 301.
- the flow may include the following steps.
- the network device 303 determines that the M second terminal devices 302 can forward the data stream for the first terminal device 301.
- the M second terminal devices 302 include the above-mentioned N second terminal devices 302 (A 1 , ... A i , ... A N ). It should be noted that the M second terminal devices 302 are the first terminal devices 301.
- the first terminal device 301 can forward data streams from the network device 303, and the N second terminal devices 302 of the M second terminal devices are The first terminal device 301 forwards the data stream from the network device 303 while performing downlink data transmission.
- the network device 303 can determine, by using various optional implementation manners, that the M second terminal devices 302 can send the data flow of the first terminal device 301 to the first terminal device 301, where the following optional implementation manners and optional implementation manners are used.
- the second is an example.
- the first terminal device 301 notifies the network device 303 that the M second terminal devices 302 can forward the data stream to the first terminal device 301.
- the network device 303 can send a first control message to the first terminal device 301, the message indicating that the first terminal device 301 determines the second terminal device 302 that forwards the data stream, and the network device 303 can carry the first terminal device 301 in the first control message.
- the first terminal device 301 After the first control device receives the first control message, the first terminal device 301 triggers the second terminal device 302 that can forward the data stream for itself according to the identity information carried in the message; the first terminal device 301 responds to First control message
- the network device 303 sends a first auxiliary notification message, which is used to indicate that the M second terminal devices 302 determined by the first terminal device can forward the data flow of the first terminal device to the first terminal device 301, and the network device After receiving the first auxiliary notification message, the 303 determines that the M second terminal devices 302 can forward the data stream to the first terminal device 301.
- the first terminal device 301 may also send a first auxiliary notification message to the network device 303 (for example, periodically sending the first auxiliary notification message) to indicate the M second terminal devices determined by the first terminal device.
- 302 may forward the data stream to the first terminal device 301, and the first auxiliary notification message is not sent after receiving the first control message sent by the network device 303.
- the first terminal device 301 can determine, by using the following multiple schemes, that the M second terminal devices 302 forward the data stream of the first terminal device to the first terminal device 301. Before the first terminal device 301 determines that it forwards the data stream of the first terminal device from the network device 303, the network device 303 may send a first control message to the first terminal device, where the first control message indicates The first terminal device determines the M second terminal devices 302. If the first terminal device does not receive the first control message, the first terminal device may not be sure of the M second terminal devices 302.
- the first terminal device 301 broadcasts an auxiliary request message to the at least one peripheral device, and the auxiliary request message is used to query the at least one terminal device who can receive the first terminal device from the network device 303 for the first terminal device 301. Data stream, and forwarded to the first terminal device;
- the first terminal device 301 receives, from the at least one terminal device, a secondary response message sent by the M second terminal devices 302 in response to the auxiliary request message, where the auxiliary response message is used to notify the first terminal device 301 to issue the
- the terminal device supporting the response message can forward the data stream to the first terminal device 301; then the first terminal device 301 determines that the M second terminal devices 302 can forward the data stream for the first terminal device.
- the first terminal device 301 receives the first auxiliary indication message sent by the M second terminal devices 302, where the first auxiliary indication message is used to indicate that the terminal device that sends the first auxiliary indication message can forward the data stream to the first terminal device 301.
- the first terminal device 301 is based on the received M second terminals.
- the first auxiliary indication message sent by the device 302 determines that the M second terminal devices 302 can forward the data stream to the first terminal device 301.
- the second terminal device 302 may determine that the data flow may be forwarded for the first terminal device 301 after receiving the auxiliary acknowledgement message sent by the first terminal device 301 in response to the first auxiliary indication message.
- the first terminal device 301 receives a second auxiliary indication message sent by the plurality of second terminal devices 302 (the plurality of second terminal devices 302 includes M second terminal devices 302), and the second auxiliary indication message is used to indicate: sending The terminal device of the second auxiliary indication message is expected to forward the data stream for the first terminal device 301;
- the first terminal device 301 receives the second auxiliary indication message respectively sent by the multiple second terminal devices 302, and determines that the second terminal device 302 can be the second when the second terminal device 302 satisfies the foregoing “auxiliary condition”.
- a terminal device 301 forwards the data stream.
- the second terminal device 302 determines that the data flow can be forwarded for the first terminal device 301.
- the first auxiliary notification message includes at least one of the following information:
- the network device 303 can determine, according to the information one, and the first terminal device 301 that sends the first auxiliary notification message, that the M second terminal devices 302 can forward the data stream for the first terminal device 301.
- the network device 303 can know in advance that the first terminal device 301 and the M second terminal devices 302 belong to the first terminal device group Group1, and the network device 303 can determine other terminal devices in the group1 according to the identification information of the first terminal device 301, that is, The M second terminal devices 302 can forward the data stream to the first terminal device 301;
- the network device 303 knows in advance the M third terminal device groups TG 1 , . . . , TG i , . . . , TG M to which the first terminal device 301 belongs, wherein the third terminal device group TG i corresponds to the second terminal device 302A i .
- the network device 303 can determine the M third terminal device groups TG 1 , . . . , TG i , . . . TG M according to the identification information of the first terminal device 301, and determine the M third terminal device groups TG 1 , . . . TG i , .
- the second terminal device 302 corresponding to the TG M respectively can forward the data stream for the first terminal device 301.
- the network device 303 can know in advance that the first terminal device 301 and the M second terminal devices 302 are included in the Group 1.
- the network device 303 can know in advance that the Group 2 includes M second terminal devices 302. According to the identification information of the Group 2, it is determined that the first terminal device 301 that sends the first auxiliary notification message can forward the data stream by the M second terminal devices 302 in the Group 2.
- the M second terminal devices 302 respectively notify the network device 303 that the data flow can be forwarded for the first terminal device 301.
- the network device 303 can send a second auxiliary information request message to the plurality of second terminal devices 302 (including the M second terminal devices 302), and the M second terminal devices 302 respond to the second auxiliary information request.
- the message respectively sends a second auxiliary notification message, which is used to indicate that the data stream can be forwarded for the first terminal device 301.
- the network device 303 determines that the M second terminal devices 302 can forward the data stream to the first terminal device 301.
- the second terminal device 302 may indicate information of the terminal device that can be forwarded by the second terminal device 302, where the information includes the information of the first terminal device 301, and the network device 303
- the received second auxiliary notification message includes the information of the first terminal device 301, determining that the second terminal device 302 can forward the data stream for the first terminal device 301; or
- the M second terminal devices 302 may also send the second auxiliary notification message by themselves (for example, periodically sending the second auxiliary notification message), and do not need to send the second auxiliary after receiving the second auxiliary information request message sent by the network device 303. Notification message.
- the second auxiliary notification message may include at least one of the following information:
- the identification information of the second terminal device 302 that sends the second auxiliary notification message can determine, according to the identification information of the second terminal device 302, that the second terminal device 302 can forward the data stream for the first terminal device 301.
- the identifier information of the first terminal device 301, the network device 303 can determine that the second terminal device 302 can be the first terminal device 301 according to the identifier information of the first terminal device 301 and the second terminal device 302 that sends the second auxiliary notification message. Forward the data stream.
- the network device 303 knows in advance the correspondence between the third terminal device group and the second terminal device 302, and determines that the second terminal device 302 corresponding to the TG can forward the data stream for the first terminal device 301.
- the network device 303 knows in advance the correspondence between the TAG and the second terminal device 302, and determines that the second terminal device 302 included in the TAG can forward the data stream to the first terminal device 301.
- the network device 303 notifies the M second terminal devices 302 to report downlink channel information.
- the network device 303 may send a channel information report request message to the M second terminal devices 302, requesting to report downlink channel information.
- S502' the network device 303 notifies the first terminal device 301 to report downlink channel information
- the network device 303 may send a channel information report request message to the first terminal device 301, requesting to report downlink channel information.
- the M second terminal devices 302 respectively receive the notification of the network device 303 or the first terminal device 301, for example, after receiving the channel information report request message, reporting the M to the network device 303.
- the channel information report request message may be used to request the second terminal device 302 or the first terminal device 301 to report downlink channel information between the second terminal device 302 and the network device 303, or between the first terminal device 301 and the network device 303.
- Downstream channel information may be used to report downlink channel information between the second terminal device 302 and the network device 303, or between the first terminal device 301 and the network device 303.
- the channel information report request message may also be used to request the terminal device in the first terminal device group Group1 to which the first terminal device 301 and the M second terminal devices 302 belong to report the downlink channel information, where the message may carry the identification information of the group1.
- the second terminal device 302 After receiving the message, the second terminal device 302 reports the downlink channel information because it knows that it belongs to Group1 in advance; or
- the channel information report request message may also be used to request the terminal device in the second terminal device group Group2 to which the M second terminal devices 302 belong to report the downlink channel information, where the message may carry the identification information of the group 2, and the second terminal device 302 receives After the message is received, the downlink channel information is reported because it belongs to Group2 in advance;
- the network device 303 can also send M channel information report request messages, where the M messages respectively carry the identification information of the M fourth terminal device groups TAG 1 , . . . , TAG i , . . . , TAG M , and the second terminal device 302 receives the channel.
- the information report request message if the message carries the identification information of the fourth terminal device group to which the message belongs, the downlink channel information is reported.
- the second terminal device 302 can also report the downlink channel information (for example, periodically send the downlink channel information), and does not need to report the notification from the network device 303.
- the second terminal device 302 reports the downlink channel information to the network device 303 when determining that it satisfies the foregoing “auxiliary condition”; or
- the second terminal device 302 After receiving the notification of the first terminal device 301, for example, after receiving the channel information report request message sent by the first terminal device 301, the second terminal device 302 reports the downlink channel information to the network device 303; or
- the second terminal device 302 When detecting that the first terminal device 301 reports the downlink channel information to the network device 303, the second terminal device 302 reports the downlink channel information to the network device 303.
- the first terminal device 301 reports the downlink channel information of the downlink channel between the first terminal device 301 and the network device 303 to the network device 303;
- the first terminal device 301 can also report the downlink channel information (for example, periodically send the downlink channel information), and does not need to report the notification from the network device 303.
- the downlink channel information may be a pre-coding matrix indicator (PMI) and a channel quality indicator (CQI).
- the first terminal device 301 or the second terminal device 302 can select the PMI and CQI with the highest data transmission rate to report to the network device.
- the downlink channel information may also be information for the characteristics of the reactive channel transmission, such as a channel transmission matrix (also often referred to as a system function or system impulse response).
- the precoding matrix is determined by processing the channel transmission matrix, such as matrix eigenvalues and eigenvectors of singular value decomposition (SVD).
- SVD singular value decomposition
- the network device 303 is a base station
- the terminal device is a UE as an example
- the processing of the precoding matrix and the precoding is described.
- the base station sends a data stream to multiple UEs at the same time, one or more data streams sent to each UE need to be processed by using a precoding matrix, and the base station transmits the processed data stream to the UE through the antenna.
- the base station pre-codes the downlink data stream according to the precoding matrix and sends the downlink data stream to the terminal device, so as to avoid interference of other channels, so that the pre-coded downlink data stream can obtain the best transmission on the downlink channel. quality.
- the manner of obtaining the precoding matrix may be based on the codebook space or the non-codebook space.
- one codebook space contains multiple precoding matrices, each of which is identified by PMI.
- the codebook space may be pre-stored on the base station and the UE, and the UE may measure the downlink channel, determine the PMI, and send the PMI to the base station, so that the base station determines the precoding matrix corresponding to the PMI.
- the UE measures the downlink channel and feeds back the downlink channel measurement result to the base station.
- the base station determines the channel transmission matrix according to the downlink channel measurement result, and processes the channel transmission matrix (for example, SVD decomposition). Determine the precoding matrix.
- the network device 303 may also notify the M+1 terminal devices including the first terminal device 301 and the M second terminal devices 302. At least one terminal device reports downlink channel information, and the at least one terminal device reports its own downlink channel information after receiving the notification;
- At least one of the M+1 terminal devices including the first terminal device 301 and the M second terminal devices 302, reports the downlink channel information, for example, periodically reports the downlink channel information.
- the network device 303 determines that the N second terminal devices 302 in the M second terminal devices 302 can be forwarded to the first terminal device 301 according to the received downlink channel information sent by the M second terminal devices 302. data flow;
- the network device 303 may select, through the MU-MIMO pre-processing, N second terminal devices 302 from the M second terminal devices 302, where the N second terminal devices 302 satisfy:
- the channels corresponding to the precoding matrix corresponding to the PMI are orthogonal or mutually quasi-orthogonal.
- the network device 303 may use the downlink channel information of the terminal device in advance, and report the downlink channel information of the terminal device along with the terminal device that has reported the downlink channel information.
- the downlink channel information is subjected to MU-MIMO pre-processing, and a terminal device that can transmit the downlink data stream in parallel by using the MU-MIMO technology is selected from a plurality of terminal devices.
- the network device 303 divides the data stream that needs to be sent to the first terminal device 301 into at least one group of data streams, where the at least one group of data streams includes N third group data streams D 31 , ... D 3i , ... D 3N ;
- the network device 303 sends the N third group data streams D 31 , ... D 3i , ... D 3N to the N second terminal devices 302 in parallel using the MU-MIMO technology;
- the network device 303 may further send terminal device indication information for indicating that the N third group data streams D 31 , . . . D 3i , . . . D 3N are sent to the first terminal device 301.
- the network device 303 may carry the foregoing target terminal device indication information in the sent third group of data streams, and after receiving the third group of data streams, the second terminal device 302 determines, according to the target terminal device indication information carried therein
- the third group of data streams are sent to the first terminal device 301, and then the second terminal device 302 can process the third group of data streams to generate a corresponding second group of data streams, and send the data to the first terminal device 301; or
- the network device 303 may send the foregoing target terminal device indication information, before indicating that the third group of data streams to be sent is sent to the first terminal device 301, and then the second terminal device 302.
- the third group of data streams may be processed to generate a corresponding second group of data streams, and sent to the first terminal device 301; or
- the network device 303 may send the foregoing target terminal device indication information after the third group of data streams is sent, indicating that the third group of data streams that have been sent are sent to the first terminal device 301, and then the second terminal device 302
- the third group of data streams may be processed to generate a corresponding second group of data streams, which are sent to the first terminal device 301.
- the network device 303 sends the first set of data streams D 1 to the first terminal device 301 using MU-MIMO technology;
- the first group of data streams D 1 and the N third group of data streams D 31 , . . . D 3i , . . . D 3N are network devices 303 and transmitted in parallel by using MU-MIMO technology;
- the network device 303 transmits the data stream in parallel by using the MU-MIMO technology according to the downlink channel information reported by each terminal device.
- the following downlink channel information transmission scheme may also be adopted (where each terminal device may be a terminal device with a number of transmission requirements, or may be a number of transmissions Demanded terminal equipment):
- the receiving network device 303 sends a second control message, where the second control message is used to indicate the first terminal.
- the device 301 acquires downlink channel information of the second terminal device 302.
- Each terminal device sends the information of the downlink channel between itself and the network device 303 to a central terminal device, where the central terminal device may be one of the foregoing terminal devices, or may be a terminal device other than each terminal device;
- the central terminal device can satisfy at least one of the following conditions:
- a data transmission rate of each of the terminal devices transmitting data to the central terminal device is greater than a third data transmission rate threshold
- the remaining power of the central terminal device is greater than the first power threshold
- the distance between each of the second terminal devices and the central terminal device of each terminal device is less than a third distance threshold.
- the information of the downlink channel sent by each terminal device may include one or more of the following information:
- the first channel information is a channel transmission matrix.
- the channel transmission matrix is used to represent the inherent transmission characteristics of the channel. These inherent transmission characteristics cause deformation of the signal transmitted in the channel, such as amplifying the signal power, attenuating the signal power, causing the signal to generate Doppler shift, signal phase shift or Multipath delay and other effects.
- the first channel information herein refers to a channel transmission matrix of a downlink channel between the second terminal device and the network device. When the network device transmits downlink data to the second terminal device on the downlink channel, the downlink data transmitted on the downlink channel will generate the above various changes due to the inherent transmission characteristics of the channel.
- the second channel information, the second channel information is a transformation matrix of the channel transmission matrix.
- the transformation matrix may be a linear transformation of the above-described channel transmission matrix or a nonlinear transformation.
- the transformation matrix linearly transformed by the channel transmission matrix itself can reflect the inherent transmission characteristics of the channel.
- the nonlinear transformation matrix of the channel transmission matrix the nonlinear transformation needs not to change the inherent transmission characteristics of the channel.
- the transformation matrix of the channel transmission matrix may be a second-order characteristic matrix of the channel transmission matrix, such as an autocorrelation matrix of the channel transmission matrix.
- the transform matrix of the channel transmission matrix can also be a high order characteristic matrix of the channel transmission matrix.
- the third channel information is a matrix after quantization processing of the channel transmission matrix, or a matrix after quantization processing of a transformation matrix of the channel transmission matrix. Since the elements in the transformation matrix of the channel transmission matrix or the channel transmission matrix may be analog quantities, the current wireless communication system is mainly a digital communication system, and for the convenience of processing, the analog quantity is converted into a digital quantity by Z quantization values. This is called quantization processing, where Z is an integer power of 2.
- the fourth channel information, the fourth channel information includes:
- a network device for each group codebook of at least one set of codebooks that can be used by a terminal device that reports channel information of a downlink channel, a precoding matrix PMI corresponding to the group of codebooks, and a PMI corresponding to the group codebook 303, when the K data streams are simultaneously sent for the terminal device, the corresponding channel quality indicator CQI, K is a positive integer, and is not greater than the number that the network device 303 can simultaneously send for the terminal device. The maximum number of streams.
- each terminal device can transmit the information of the downlink channel to the central terminal device with a higher data transmission rate and/or a lower transmission power by utilizing the characteristics of good communication quality of short-distance communication with the central terminal device.
- the channel capacity between the network device 303 and the network device 303 is avoided, and the rich channel information can be transmitted. Compared with the mechanism that the LTE system feeds back the downlink control channel, the channel information can be fed back to the network device 303 with high precision.
- the central terminal device performs MU-MIMO pre-processing according to the channel information sent by each terminal device.
- the pre-processing process it is determined according to the channel information sent by each terminal device, which terminals of the terminal devices can be used by the network device 303 by using the MU-MIMO technology.
- the device simultaneously delivers the data stream, and determines that the network device 303 receives the PMI that is suitable for each terminal device of the parallel data stream when the data stream is sent in parallel by using the MU-MIMO technology, and the terminal device uses the PMI suitable for use.
- the network device 303 indicates the CQI corresponding to the channel quality when the K data streams are simultaneously transmitted for the second terminal device 302.
- the central terminal device may determine, when the PMI corresponding channels used by each terminal device are mutually orthogonal or mutually quasi-orthogonal, determine the PMIs used for downlink data transmission.
- the MU-MIMO pre-processing is completely performed by the base station. Since the downlink channel information acquired by the base station is limited, the performance of the MU-MIMO data transmission is affected.
- the MU-MIMO pre-processing may also be performed by the central terminal device, and the network device 303 directly performs MU-MIMO downlink data transmission according to the received MU-MIMO pre-processing result, and the central terminal device is based on The channel information is subjected to MU-MIMO pre-processing, and the result of the pre-processing is high.
- the network device 303 performs MU-MIMO transmission according to the result of the high-precision MU-MIMO pre-processing, which can effectively improve the performance of the MU-MIMO data transmission. .
- the second terminal device 302 For each of the N second terminal devices 302, the second terminal device 302 generates a second group of data streams after receiving the third group of data streams.
- the second terminal device 302 can directly forward the received third group of data streams to the first terminal device 301 as the second group of data streams; or
- the second terminal device 302 may combine the received plurality of third group data streams to generate a second group data stream, and forward the data to the first terminal device 301; or
- the second terminal device 302 may split the received third group of data streams into multiple second group data streams and forward them to the first terminal device 301.
- the first terminal device 301 performs data processing on the received N second group data streams D 21 , ... D 2i , ... D 2N ; optionally, if the first terminal device 301 receives the network in step S506' The first set of data streams D 1 transmitted by the device 303, the first terminal device 301 determines the PMI used in downlink data transmission according to D 21 , ... D 2i , ... D 2N and the first group of data streams D 1 .
- the network device 303 performs segmentation processing on the high-level data that needs to be sent to the first terminal device 301, and adds a segment identifier to each piece of data, which can represent the high-level of each segment.
- the data is forwarded to the first terminal device 301 through the antenna.
- the network device 303 processes the high-level data of each segment through the processing of the physical layer protocol.
- the first terminal device 301 After receiving the data streams of each group, the first terminal device 301 performs physical layer protocol processing on each group of data streams, generates high-level data of each segment, and segment identifiers of high-level data of each segment, and divides each segment.
- the high-level data of the segments are stitched together in order.
- the high-level data may refer to protocol layer data above the physical layer, such as the Medium Access Contorl (MAC) layer, and complete the segmentation processing of the data.
- the processing of the physical layer protocol may include: scrambling, modulation, layer mapping, precoding, resource element (RE) mapping, Orthogonal Frequency Division Multiplexing (OFDM) signal generation, and signal at the antenna port. Send, etc.
- step S505 the solution when the network device 303 divides the data stream is not limited to the foregoing solution.
- the first terminal device 301 processes the received multiple sets of data streams, and is not limited to the foregoing processing manner. .
- the foregoing process implements that the network device 303 sends the downlink data sent to one terminal device to the terminal device by using the MU-MIMO technology, and fully utilizes the downlink sending capability of each terminal device covered by the network device 303, thereby effectively improving the communication system. Swallow The amount of spit.
- Step S503 ′ and step S 506 ′ are optional steps, indicating that even if the network device 303 does not send the data stream to the first terminal device 301 itself, the MU-MIMO technology may be adopted, and the other terminal device, that is, the second terminal device, may be adopted.
- 302 transmits downlink data that needs to be sent to the first terminal device 301.
- the first terminal device 301 (T) and the second terminal device 302 (A 1 , A 3 , A 4 ) form a first terminal device group, and the network device 303 finally passes the MU.
- the MIMO technology transmits data streams in parallel to A 1 , A 3 , and T.
- T sends an auxiliary request message to the surrounding terminal devices (including A 1 , A 2 , A 3 , and A 4 ), and receives auxiliary response messages fed back by A 1 , A 3 , and A 4 , then T and A 1 , A 3 , A 4 constitutes a first terminal device group;
- T and A 1 , A 3 , and A 4 respectively report their downlink channel information to the network device 303;
- the network device 303 performs MU-MIMO pre-processing to determine that the data stream sent to T can be forwarded through A 1 and A 3 ;
- the network device 303 uses MU-MIMO technology to transmit the following data streams in parallel:
- a 1 processes D 31 to generate D 21 and sends it to T.
- a 3 processes D 33 to generate D 23 and sends it to T; T combines the received D 1 and D 2 D D 24 .
- FIG. 7 is a schematic structural diagram of a first terminal device provided by the present application. As shown in FIG. 7, the first terminal device includes:
- the transceiver module 701 is configured to receive, by the second terminal device, a data stream of the first terminal device;
- the processing module 702 is configured to process the data stream received by the receiving module.
- the second terminal device is configured to receive, by the network device that serves the first terminal device, a data flow of the first terminal device that is sent by the network device by using a multi-user-multiple-input multiple-out MU-MIMO technology.
- the transceiver module 701 is configured to perform a transceiving operation of the first terminal device 301
- the processing module 702 is configured to perform a processing operation of the first terminal device 301.
- the processing module 702 determines the second terminal device, how the transceiver module 701 sends the downlink channel information of the first terminal device 301, transmits the downlink channel information of the second terminal device, receives the control message of the network device, and sends a response to the network device.
- the process of receiving the message receiving the downlink data stream forwarded by the second terminal device, refer to the processing flow of the first terminal device 301 in the process shown in FIG.
- the second terminal device that interacts with the first terminal device shown in FIG. 7 can be regarded as any one of the foregoing M second terminal devices 302.
- processing module 702 is further configured to: before the transceiver module 701 receives the data stream of the first terminal device, determine the second terminal device.
- the processing module 702 determines that an optional implementation manner of the second terminal device may be used in the step S501 in the process shown in FIG. 5, where the first terminal device 301 determines the second terminal device 302 that can forward the data stream for itself. Three options. Of course, the processing module 702 determines that the implementation manner of the second terminal device is not limited to the foregoing three alternatives, and the determined second terminal device may receive the downlink data flow of the first terminal device that is sent by the network device by using the MU-MIMO technology, and The received downlink data stream may be forwarded to the first terminal device.
- the transceiver module 701 is further configured to:
- processing module 702 determines the second terminal device, before processing the data stream received by the transceiver module 701, sending a first auxiliary notification message to the network device;
- the first auxiliary notification message is used to notify the network device that the second terminal device receives the data of the first terminal device from the network device.
- An optional implementation manner in which the transceiver module 701 sends the first auxiliary notification message may refer to step S501 in the process shown in FIG. 5.
- the transceiver module 701 is further configured to: before the processing module 702 determines to determine the second terminal device, send an auxiliary request message to the at least one terminal device, where the auxiliary request message is used to query whether the at least one terminal device can receive the first terminal device. Data stream, and the received data stream of the first terminal device is sent to the first terminal device;
- the processing module 702 is specifically configured to: determine, by the at least one terminal device, the terminal device that sends the auxiliary response message as the second terminal device, where the auxiliary response message is used to notify the first terminal device that the terminal device that sends the auxiliary response message can receive the first terminal device. And the data stream of the received first terminal device is sent to the first terminal device.
- the optional implementation manner of the sending and receiving module 701 sending the auxiliary request message and receiving the auxiliary response message may refer to the second terminal device in the step S501 in the process shown in FIG. 5, where the first terminal device 301 determines that the data stream can be forwarded for itself.
- the first terminal device 301 sends an auxiliary request message to the peripheral device, and the auxiliary request message sent by the transceiver module 701 can be regarded as the first terminal device 301.
- the auxiliary response message received by the transceiver module 701 can be regarded as the auxiliary response message received by the first terminal device 301 in the alternative one.
- the transceiver module 701 is further configured to: before the processing module 702 determines the second terminal device, receive the first control message sent by the network device, where the first control message instructs the first terminal device to determine the second terminal device.
- the transceiver module 701 is further configured to:
- the terminal device Before receiving the data flow of the first terminal device from the second terminal device, transmitting downlink channel information of the second terminal device to the network device, where the downlink channel information of the second terminal device is used by the network device to use the MU-MIMO technology to the second The terminal device sends the data stream of the first terminal device.
- the first terminal device shown in FIG. 7 can forward the downlink channel information of the second terminal device to the network device as a central terminal device described in step S506' in the flow shown in FIG. 5.
- the transceiver module 701 is further configured to:
- the receiving network device Before receiving the downlink channel information of the second terminal device and the network device, the receiving network device sends a second control message, where the second control message is used to instruct the first terminal device to acquire the downlink channel information of the second terminal device.
- the transceiver module 701 is further configured to:
- processing module 702 determines the second terminal device, notifying the second terminal device to the network device Sending downlink channel information of the second terminal device.
- the transceiver module 701 is further configured to:
- the downlink channel information of the first terminal device is sent to the network device, and the downlink channel information of the first terminal device is used by the network device to send the data flow of the first terminal device to the second terminal device by using the MU-MIMO technology.
- the second terminal device has a data transmission requirement, or the second terminal device has no data transmission requirement.
- FIG. 8 is a schematic structural diagram of a first terminal device provided by the present application when a specific implementation manner is adopted.
- the transceiver module 701 can be implemented by the transceiver 801 of FIG. 8, and the processing module 702 can be implemented by the processor 802 of FIG.
- the transceiver 801 can transmit and receive messages and data through one or more antennas.
- FIG. 9 is a schematic structural diagram of a second terminal device provided by the present application. As shown in FIG. 9, the second terminal device includes:
- the processing module 901 is configured to determine, by the second terminal device, the data stream of the first terminal device that is sent by the network device by using the MU-MIMO technology, from the network device that serves the first terminal device;
- the receiving module 902 is configured to receive a data flow of the first terminal device that is sent by the network device by using the MU-MIMO technology;
- the sending module 903 is configured to send the data stream of the first terminal device received by the receiving module 902 to the first terminal device.
- the processing module 901 may be configured to perform processing operations of the second terminal device 302
- the receiving module 902 may be configured to perform The receiving operation of the second terminal device 302 can be used to perform the sending operation of the second terminal device 302.
- the second terminal device determines that the first terminal device can forward the downlink data stream, send its own downlink channel information, receive the control message of the first terminal device or the network device, send a response message to the first terminal device or the network device, and For an optional process for the first terminal device to forward the downlink data stream, refer to the process flow of the second terminal device 302 in the process shown in FIG.
- the second terminal device shown in FIG. 9 can be regarded as any one of the aforementioned M second terminal devices 302.
- the sending module 903 is further configured to: before the receiving module 902 receives the data stream of the first terminal device, send the downlink channel information of the second terminal device to the network device, where the downlink channel information of the second terminal device is used for the network device.
- the data stream of the first terminal device is sent to the second terminal device by using the MU-MIMO technology.
- the receiving module 902 is further configured to: before the sending module 903 sends the downlink channel information of the second terminal device to the network device, receive a notification sent by the network device or the first terminal device, where the notification is used to instruct the second terminal device to The network device sends downlink channel information of the second terminal device.
- the sending module 903 reports the optional implementation manner, the triggering condition, and the like of the downlink channel information of the second terminal device. For details, refer to the processing of the second terminal device 302 in step S503 in the process shown in FIG.
- the notification sent by the network device received by the receiving module 902 can be regarded as the channel information report request message sent by the network device 303 described in the foregoing step S503; the notification sent by the first terminal device received by the receiving module 902 can be regarded as The channel information report request message sent by the first terminal device 301 described in the foregoing step S503.
- the sending module 903 is specifically configured to:
- the processing module 901 confirms that the first terminal device sends the downlink channel information of the first terminal device to the network device, the downlink channel information of the second terminal device is sent to the network device, and the downlink channel information of the second terminal device is used by the network device to pass the MU.
- the MIMO technology transmits the data stream of the first terminal device to the second terminal device.
- the sending module 903 is further configured to: before the sending module 903 sends the data stream of the first terminal device received by the receiving module 902 to the first terminal device, send the second auxiliary notification message to the network device;
- the second auxiliary notification message is configured to notify the second terminal device that the data stream of the first terminal device that is sent by the network device by using the MU-MIMO technology is received, and the data stream of the first terminal device is sent to the first terminal device.
- An optional implementation manner in which the sending module 903 sends the second auxiliary notification message may refer to the foregoing steps.
- the network device 303 determines an optional implementation manner 2 in which the M second terminal devices 302 can forward the data stream to the first terminal device 301.
- the second terminal device has a data transmission requirement or no data transmission requirement.
- FIG. 10 is a schematic structural diagram of a second terminal device provided by the present application when a specific implementation manner is adopted.
- the processing module 901 can be implemented by the processor 1001 in FIG. 10
- the receiving module 902 can be implemented by the receiver 1002 in FIG. 10
- the transmitting module 903 can be implemented by the transmitter 1003 in FIG.
- the transmitter 1003 and the receiver 1002 can share one or more antennas, and the transmitter 1003 can transmit messages and data through the one or more antennas, and the receiver 1002 can perform the one or more antennas. Reception of messages and data.
- FIG. 11 is a schematic structural diagram of a network device provided by the present application. As shown in FIG. 11, the network device includes:
- the processing module 1101 is configured to determine a second terminal device, where the second terminal device is configured to receive, by the network device, a data stream of the first terminal device that is sent by the network device by using the MU-MIMO technology;
- the transceiver module 1102 is configured to send the data stream of the first terminal device to the second terminal device by using the MU-MIMO technology.
- the processing module 1101 may be configured to perform processing operations of the network device 303, and the transceiver module 1102 may be configured to perform a transceiving operation of the network device 303.
- the network device determines the second terminal device, receives the downlink channel information sent by the first terminal device or the second terminal device, sends a control message to the first terminal device or the second terminal device, and receives the first terminal device or the second terminal device
- For an optional process of sending a data stream of the first terminal device to the second terminal device refer to the processing flow of the network device 303 in the process shown in FIG. 5.
- the processing module 1101 may refer to the network device 303 in the foregoing step S501 to determine an optional implementation manner of the M second terminal devices 302.
- the second terminal device that interacts with the network device shown in FIG. 11 can be regarded as any one of the aforementioned M second terminal devices 302.
- the transceiver module 1102 is further configured to: determine, by the processing module 1101, the second terminal device. And sending, to the first terminal device, a first control message, the first control device instructing the first terminal device to determine the second terminal device, and receiving, from the first terminal device, the first terminal device, in response to the first control message a secondary notification message, the first auxiliary notification message is used to notify the network device by which second terminal device receives the data of the first terminal device from the network device;
- the processing module 1101 is specifically configured to: determine, according to the notification message received by the transceiver module 1102, the second terminal device.
- the transceiver module 1102 is further configured to: before the processing module 1101 determines the second terminal device, receive a second auxiliary notification message sent by the second terminal device, where the second auxiliary notification message is used to notify the network device of the second terminal device
- the data stream of the first terminal device that is sent by the network device by using the MU-MIMO technology is received, and the data stream of the first terminal device is sent to the first terminal device;
- the processing module 1101 is specifically configured to: determine, according to the second auxiliary notification message, the second terminal device.
- the network device shown in FIG. 11 receives the second auxiliary notification message and determines the optional implementation manner of the second terminal device according to the second auxiliary notification message.
- the network device 303 determines that the M second terminal devices 302 can An optional implementation manner 2 of forwarding the data stream for the first terminal device 301.
- the transceiver module 1102 is further configured to: before sending the data stream of the first terminal device to the second terminal device by using the MU-MIMO technology,
- the transceiver module 1102 is further configured to:
- the downlink channel information of the second terminal device is used by the network device to send the data flow of the first terminal device to the second terminal device by using the MU-MIMO technology.
- the transceiver module 1102 is further configured to:
- the downlink channel information of the first terminal device is used by the network device to send the data stream of the first terminal device to the second terminal device by using the MU-MIMO technology.
- the second terminal device has a data transmission requirement, or the second terminal device has no data transmission requirement.
- FIG. 12 is a schematic structural diagram of a network device provided by the present application when a specific implementation manner is adopted.
- the transceiver module 1102 can be implemented by the transceiver 1202 in FIG. 12, and the processing module 1101 can be implemented by the processor 1201 in FIG.
- the transceiver 1202 can transmit and receive messages and data through a plurality of antennas.
- the second terminal device participates in downlink data transmission of the first terminal device of the MU-MIMO, and even if only the data stream of the first terminal device or the data transmission amount of the second terminal device is small, the second terminal device and the network device
- the downlink channel is not wasted but is used to assist the transmission of the data stream of the first terminal device, which prevents the network device from transmitting the data stream to the plurality of terminal devices by using the MU-MIMO technology, thereby causing the MU-MIMO to degenerate into the SU.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
Description
Claims (39)
- 一种第一终端设备,其特征在于,包括:收发模块,用于从第二终端设备处接收所述第一终端设备的数据流;处理模块,用于对所述接收模块收到的数据流进行处理;其中,所述第二终端设备用于从服务所述第一终端设备的网络设备处接收所述网络设备通过多用户-多入多出MU-MIMO技术发送的所述第一终端设备的数据流。
- 如权利要求1所述的设备,其特征在于,所述处理模块还用于:在所述收发模块接收所述第一终端设备的数据流之前,确定所述第二终端设备。
- 如权利要求2所述的设备,其特征在于,所述收发模块还用于:在所述处理模块确定所述第二终端设备之后,对所述收发模块收到的数据流进行处理之前,向所述网络设备发送第一辅助通知消息;所述第一辅助通知消息用于通知所述网络设备由所述第二终端设备从所述网络设备接收所述第一终端设备的数据。
- 如权利要求2或3所述的设备,其特征在于,所述收发模块还用于:在所述处理模块确定第二终端设备之前,向至少一个终端设备发送辅助请求消息;所述辅助请求消息用于询问所述至少一个终端设备能否接收所述第一终端设备的数据流,并将接收的所述第一终端设备的数据流发送给所述第一终端设备;所述处理模块具体用于:将所述至少一个终端设备中发出辅助响应消息的终端设备确定为所述第二终端设备;所述辅助响应消息用于通知所述第一终端设备发出所述辅助响应消息的终端设备能接收所述第一终端设备的数据流并将接收的所述第一终端设备的数据流发送给所述第一终端设备。
- 如权利要求1~4任一项所述的设备,其特征在于,所述收发模块还用于:在所述处理模块确定第二终端设备之前,接收所述网络设备发送的第一控制消息,所述第一控制消息指示所述第一终端设备确定所述第二终端设备。
- 如权利要求1~5任一项所述的设备,其特征在于,所述收发模块还用于:在从第二终端设备处接收所述第一终端设备的数据流之前,向所述网络设备发送所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备使用MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求6所述的设备,其特征在于,所述收发模块还用于:在向所述网络设备发送所述第二终端设备的下行信道信息之前,接收所述网络设备发送第二控制消息;所述第二控制消息用于指示所述第一终端设备获取所述第二终端设备的下行信道信息。
- 如权利要求1~5任一项所述的设备,其特征在于,所述收发模块还用于:在所述处理模块确定第二终端设备之后,通知所述第二终端设备向所述网络设备发送所述第二终端设备的下行信道信息。
- 如权利要求1~8任一项所述的设备,其特征在于,所述收发模块还用于:向所述网络设备发送所述第一终端设备的下行信道信息;所述第一终端设备的下行信道信息用于所述网络设备使用MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求1~9任一项所述的设备,其特征在于,所述第二终端设备有数据传输需求,或所述第二终端设备无数据传输需求。
- 一种第二终端设备,其特征在于,包括:处理模块,用于确定所述第二终端设备从服务第一终端设备的网络设备接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流;接收模块,用于接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流;发送模块,用于将所述接收模块接收的所述第一终端设备的数据流发送给所述第一终端设备。
- 如权利要求11所述的设备,其特征在于,所述发送模块还用于:在所述接收模块接收所述第一终端设备的数据流之前,向所述网络设备发送所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备通过MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求12所述的设备,其特征在于,所述接收模块还用于:在所述发送模块向所述网络设备发送所述第二终端设备的下行信道信息之前,接收所述第一终端设备或所述网络设备发送的通知;所述通知用于指示所述第二终端设备向所述网络设备发送所述第二终端设备的下行信道信息。
- 如权利要求12所述的设备,其特征在于,所述发送模块具体用于:在所述处理模块确认所述第一终端设备向所述网络设备发送所述第一终端设备的下行信道信息后,向所述网络设备发送所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备通过MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求11~14任一项所述的设备,其特征在于,所述发送模块还用于:在所述发送模块将所述接收模块接收的所述第一终端设备的数据流发送给所述第一终端设备之前,向所述网络设备发送第二辅助通知消息;所述第二辅助通知消息用于通知所述网络设备能够接收所述网络设备通 过MU-MIMO技术发送的所述第一终端设备的数据流并将所述第一终端设备的数据流发送给所述第一终端设备。
- 如权利要求11~15任一项所述的设备,其特征在于,所述第二终端设备有数据传输需求或无数据传输需求。
- 一种网络设备,其特征在于,包括:处理模块,用于确定第二终端设备,所述第二终端设备用于从所述网络设备处接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流;收发模块,用于将所述第一终端设备的数据流通过MU-MIMO技术发送给所述第二终端设备。
- 如权利要求17所述的设备,其特征在于,所述收发模块还用于:在所述处理模块确定第二终端设备之前,向所述第一终端设备发送第一控制消息,所述第一控制消息指示所述第一终端设备确定所述第二终端设备;以及从所述第一终端设备处接收所述第一终端设备响应于所述第一控制消息发送的第一辅助通知消息;所述第一辅助通知消息用于通知所述网络设备由所述第二终端设备从所述网络设备接收所述第一终端设备的数据;所述处理模块具体用于:根据所述收发模块接收的所述通知消息确定所述第二终端设备。
- 如权利要求17所述的设备,其特征在于,所述收发模块还用于:在所述处理模块确定第二终端设备之前,接收所述第二终端设备发送的第二辅助通知消息,所述第二辅助通知消息用于通知所述网络设备所述第二终端设备能够接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流并将所述第一终端设备的数据流发送给所述第一终端设备;所述处理模块具体用于:根据所述第二辅助通知消息确定所述第二终端设备。
- 如权利要求17~19任一项所述的设备,其特征在于,所述收发模块还用于:在将所述第一终端设备的数据流通过MU-MIMO技术发送给所述第二终端设备之前,向所述第一终端设备发送第二控制消息,所述第二控制消息用于指示所述第一终端设备获取所述第二终端设备的下行信道信息;接收所述第一终端设备响应于所述第二控制消息发送的所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备使用MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求17~19任一项所述的设备,其特征在于,所述收发模块还用于:在将所述第一终端设备的数据流通过MU-MIMO技术发送给所述第二终端设备之前,接收所述第二终端设备发送的所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备通过MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求17~21任一项所述的设备,其特征在于,所述收发模块还用于:在将所述第一终端设备的数据流通过MU-MIMO技术发送给所述第二终端设备之前,接收所述第一终端设备发送的所述第一终端设备的下行信道信息;所述第一终端设备的下行信道信息用于所述网络设备使用MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求17~22任一项所述的设备,其特征在于,所述第二终端设备有数据传输需求,或所述第二终端设备无数据传输需求。
- 一种数据传输方法,其特征在于,包括:第一终端设备从第二终端设备处接收所述第一终端设备的数据流;所述第一终端设备对收到的数据流进行处理;其中,所述第二终端设备用于从服务所述第一终端设备的网络设备处接收所述网络设备通过多用户-多入多出MU-MIMO技术发送的所述第一终端设备的数据流。
- 如权利要求24所述的方法,其特征在于,在所述第一终端设备从第二终端设备处接收所述第一终端设备的数据流之前,还包括:所述第一终端设备确定所述第二终端设备。
- 如权利要求25所述的方法,其特征在于,在所述第一终端设备确定所述第二终端设备之后,所述第一终端设备对收到的数据流进行处理之前,还包括:所述第一终端设备向所述网络设备发送第一辅助通知消息;所述第一辅助通知消息用于通知所述网络设备由所述第二终端设备从所述网络设备接收所述第一终端设备的数据。
- 如权利要求25或26所述的方法,其特征在于,在所述第一终端设备确定第二终端设备之前,还包括:所述第一终端设备向至少一个终端设备发送辅助请求消息,所述辅助请求消息用于询问所述至少一个终端设备能否接收所述第一终端设备的数据流,并将接收的所述第一终端设备的数据流发送给所述第一终端设备;所述第一终端设备确定第二终端设备,包括:所述第一终端设备将所述至少一个终端设备中发出辅助响应消息的终端设备确定为所述第二终端设备,所述辅助响应消息用于通知所述第一终端设备发出所述辅助响应消息的终端设备能接收所述第一终端设备的数据流并将接收的所述第一终端设备的数据流发送给所述第一终端设备。
- 如权利要求25~27任一项所述的方法,其特征在于,在所述第一终端设备确定第二终端设备之前,还包括:所述第一终端设备接收所述网络设备发送的第一控制消息,所述第一控制消息指示所述第一终端设备确定所述第二终端设备。
- 如权利要求24~28任一项所述的方法,其特征在于,在所述第一终端设备从第二终端设备处接收所述第一终端设备的数据流之前,还包括:所述第一终端设备向所述网络设备发送所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备使用MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求29所述的方法,其特征在于,在所述第一终端设备向所述网络设备发送所述第二终端设备的下行信道信息之前,还包括:所述第一终端设备接收所述网络设备发送第二控制消息;所述第二控制消息用于指示所述第一终端设备获取所述第二终端设备的下行信道信息。
- 如权利要求24~28任一项所述的方法,其特征在于,在所述第一终端设备确定第二终端设备之后,还包括:所述第一终端设备通知所述第二终端设备向所述网络设备发送所述第二终端设备的下行信道信息。
- 如权利要求24~31任一项所述的方法,其特征在于,还包括:所述第一终端设备向所述网络设备发送所述第一终端设备的下行信道信息;所述第一终端设备的下行信道信息用于所述网络设备使用MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求24~32任一项所述的方法,其特征在于,所述第二终端设备有数据传输需求,或所述第二终端设备无数据传输需求。
- 一种数据传输方法,其特征在于,包括:第二终端设备确定所述第二终端设备从服务第一终端设备的网络设备接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流;所述第二终端设备接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流,并将接收的所述第一终端设备的数据流发送给所述第一终端设备。
- 如权利要求34所述的方法,其特征在于,在所述第二终端设备接收所述第一终端设备的数据流之前,还包括:所述第二终端设备向所述网络设备发送所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备通过MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求35所述的方法,其特征在于,在所述第二终端设备向所述网络设备发送所述第二终端设备的下行信道信息之前,还包括:所述第二终端设备接收所述第一终端设备或所述网络设备发送的通知;所述通知用于指示所述第二终端设备向所述网络设备发送所述第二终端设备的下行信道信息。
- 如权利要求35所述的方法,其特征在于,所述第二终端设备向所述网络设备发送所述第二终端设备的下行信道信息,包括:在所述第二终端设备确认所述第一终端设备向所述网络设备发送所述第一终端设备的下行信道信息后,向所述网络设备发送所述第二终端设备的下行信道信息;所述第二终端设备的下行信道信息用于所述网络设备通过MU-MIMO技术向所述第二终端设备发送所述第一终端设备的数据流。
- 如权利要求34~37任一项所述的方法,其特征在于,在所述第二终端设备接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流,并将接收的所述第一终端设备的数据流发送给所述第一终端设备之前,还包括:所述第二终端设备向所述网络设备发送第二辅助通知消息;所述第二辅助通知消息用于通知所述网络设备能够接收所述网络设备通过MU-MIMO技术发送的所述第一终端设备的数据流并将所述第一终端设备的数据流发送给所述第一终端设备。
- 如权利要求34~38任一项所述的方法,其特征在于,所述第二终端设备有数据传输需求,或所述第二终端设备无数据传输需求。
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PCT/CN2015/099529 WO2017113113A1 (zh) | 2015-12-29 | 2015-12-29 | 终端设备、网络设备、数据传输方法和无线通信系统 |
CN201580084329.3A CN108353409B (zh) | 2015-12-29 | 2015-12-29 | 终端设备、网络设备、数据传输方法和无线通信系统 |
EP15911744.9A EP3389327B1 (en) | 2015-12-29 | 2015-12-29 | Terminal device, network device, data transmission method, and wireless communication system |
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US10079919B2 (en) * | 2016-05-27 | 2018-09-18 | Solarflare Communications, Inc. | Method, apparatus and computer program product for processing data |
CN109257810B (zh) * | 2017-07-12 | 2022-05-10 | 华为技术有限公司 | 一种功率控制方法和终端设备 |
CN113364676B (zh) * | 2020-03-05 | 2023-05-02 | 华为技术有限公司 | 一种数据流处理的方法及装置 |
CN111726647B (zh) * | 2020-06-17 | 2023-05-26 | 京东方科技集团股份有限公司 | 数据分流设备和数据处理系统 |
CN117793696A (zh) * | 2022-09-29 | 2024-03-29 | 大唐移动通信设备有限公司 | 多终端聚合传输方法、终端、网络设备、装置及存储介质 |
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JP6639680B2 (ja) | 2020-02-05 |
CN108353409A (zh) | 2018-07-31 |
JP2019508927A (ja) | 2019-03-28 |
CN108353409B (zh) | 2020-10-23 |
EP3389327A1 (en) | 2018-10-17 |
EP3389327B1 (en) | 2020-03-18 |
EP3389327A4 (en) | 2019-01-02 |
US20180310287A1 (en) | 2018-10-25 |
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