WO2015127598A1 - 网络设备和一种实现数据回传的系统及方法 - Google Patents
网络设备和一种实现数据回传的系统及方法 Download PDFInfo
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- WO2015127598A1 WO2015127598A1 PCT/CN2014/072558 CN2014072558W WO2015127598A1 WO 2015127598 A1 WO2015127598 A1 WO 2015127598A1 CN 2014072558 W CN2014072558 W CN 2014072558W WO 2015127598 A1 WO2015127598 A1 WO 2015127598A1
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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
- H04W72/27—Control channels or signalling for resource management between access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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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
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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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
- H04W72/29—Control channels or signalling for resource management between an access point and the access point controlling device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
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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
Definitions
- Network device and system and method for realizing data backhaul
- the present invention relates to the field of communications technologies, and in particular, to a network device and a system and method for implementing data backhaul.
- LTE Long Term Evolution
- LTE-advanced, tube called LET-A Long Term Evolution Advanced
- LET-A Long Term Evolution Advanced network evolution system
- a homogeneous network a high-power base station with a large coverage forms a continuous coverage according to the shape of the cellular network; and in a heterogeneous network, more small station nodes are added to the base station (macro station) network coverage, Further increase the capacity of network coverage.
- base station network coverage capacity can be improved by adding small station nodes, how to solve the data backhaul of a large number of small stations becomes one of the key problems to be solved in the heterogeneous network.
- the LTE standard supports the relay technology.
- the network mainly includes a donor node (Donor-eNB), a relay node (Relay-Node, a RN), and a user equipment (User Equipment, a UE).
- the RN-end connects to the host base station. The other end is connected to the UE, and the host base station is an ordinary base station that has been connected to the core network.
- the RN is a site that can provide radio access services for the UE.
- the Un-interface is connected to the host base station to implement data backhaul. However, the connection between the RN and the host base station is often fixed, and only one-hop connection is supported.
- the station STA (Station), the access point (Access Point, the AP) and the mesh are included.
- Network node (Mesh Point, called MP).
- the STA is equivalent to the UE in the LTE network, and the MP can connect with the neighboring MP to form a mesh network. Since the wireless mesh network of Figure 1 operates in a distributed manner, there is a lack of nodes that optimize management of the network, resulting in poor network backhaul performance. Summary of the invention
- the embodiments of the present invention provide a network device and a system for implementing data backhaul. And the method can realize the centralized dynamic allocation of the return resources in the network, and improve the data return valley of the entire network.
- a first aspect of the present invention provides a network device, which may include:
- an obtaining module configured to acquire, according to the information status information, the backhaul request of the second network device, and the remaining backhaul capability information of the third network device, the backhaul that controls the second network device and the third network device to perform data backhaul Control information, where the backhaul control information includes backhaul network topology control information and physical resource allocation information;
- a broadcast module configured to broadcast the backhaul control information to the second network device and the third network device, so that the second network device and the third network device perform data backhaul according to the backhaul control information.
- the network device further includes: a first broadcast module, configured to broadcast a reference signal indication message to the second network device and the third network device, where the reference signal is The indication message is used to indicate that one or more of the second network device and the third network device are used to transmit a reference signal, and other network devices are used for information state information measurement.
- a first broadcast module configured to broadcast a reference signal indication message to the second network device and the third network device, where the reference signal is The indication message is used to indicate that one or more of the second network device and the third network device are used to transmit a reference signal, and other network devices are used for information state information measurement.
- the network device further includes:
- a first receiving module configured to receive information state information sent by the second network device and the third network device, where the information state information is that the second network device and the third network device measure according to the reference signal indication message Obtained, the information state information includes a precoding matrix indication feedback amount PMI, a channel quality indicator CQI, and a rank Rank.
- the foregoing network device further includes: a second acquiring module, configured to acquire the information state information by using a third-party database.
- the network device further includes: a second receiving module, configured to receive information state information sent by the second network device and the third network device, where the information state The information is that the second network device and the third network device are measured according to a reference signal.
- the foregoing network device further includes: a third receiving module, configured to receive a backhaul request sent by the second network device, where the backhaul request includes At least one of the size of the total amount of data transmitted, the allowed transmission delay, the priority of the backhaul service, the minimum rate that the backhaul service needs to support, and the source/destination network information of the backhaul service.
- the foregoing network device further includes:
- a fourth receiving module configured to receive remaining backhaul capability information sent by the third network device, where the remaining backhaul capability information includes a margin of backhaul capability, a delay size experienced by the backhaul, a buffer size, and a back At least one of a charging method, a network type of the returned transmission, and a reliability indicator of the backhaul link.
- the backhaul network topology control information includes at least one backhaul path, the backhaul path is allocated to the second network device that sends the backhaul request; and the physical resource allocation information in the backhaul control information is included in using the backhaul.
- the network topology control information includes a backhaul path, the corresponding physical resource that the backhaul path can utilize;
- the broadcast module is specifically configured to send the backhaul control information to the second network device and the third network device, so that the second network device is included in the backhaul network topology control information.
- Data transmission is performed by using the physical resource indicated by the physical resource allocation information, so that the third network device uses the backhaul control information according to the backhaul control information after receiving the backhaul control information.
- the return capability is used for data backhaul.
- a second aspect of the present invention provides a network device, which may include:
- a request sending module configured to send a backhaul request to the first network device, where the backhaul request is used to request backhaul control information from the first network device, where the backhaul control information includes a backhaul network Topology control information and physical resource allocation information;
- a first information receiving module configured to receive backhaul control information broadcast by the first network device, where the backhaul control information is that the first network device, according to the information state information, the backhaul request, and the third network device The remaining backhaul capability information sent is obtained;
- the first data backhaul module is configured to perform data backhaul according to the backhaul control information.
- the network device further includes: a fifth receiving module, configured to receive a reference signal indication message broadcast by the first network device, where the reference signal indication message is used Indicates to send a reference signal or to perform information status information measurement.
- the network device when the reference signal indication message received by the fifth receiving module indicates that the reference signal is sent, the network device further includes:
- the network device further includes:
- a first measurement module configured to: according to the indication of the reference signal indication message, the measurement feedback amount precoding matrix indication PMI, the channel quality indicator CQI, and the rank Rank to obtain channel state information; wherein the information state information includes a feedback amount PMI, CQI And Rank;
- a second sending module configured to send the information state information to the first network device.
- the foregoing network device further includes: a second measurement module, configured to measure information state information according to the reference signal resource; the reference signal resource includes a common reference signal CRS and demodulation Reference signal DMRS;
- a third sending module configured to send information state information measured by the second measurement module to the first network device.
- the backhaul request includes a size of a total amount of data to be returned, an allowed transmission delay, a priority of a backhaul service, a minimum rate that the backhaul service needs to support, and a source/destination network of the backhaul service. At least one of the information.
- the backhaul network topology control information includes at least one backhaul path, the backhaul path is allocated to the second network device that sends the backhaul request, and the physical resource allocation information in the backhaul control information is included in using the backhaul network
- the topology control information includes a backhaul path, the corresponding physical resource that can be utilized by the backhaul path;
- the first data backhaul module is specifically configured to perform data backhaul on the backhaul path included in the backhaul network topology control information by using the physical resource indicated by the physical resource allocation information.
- a third aspect of the present invention provides a network device, which may include:
- the backhaul capability sending module is configured to send the remaining backhaul capability information to the first network device, where the remaining backhaul capability information includes information about the backhaul capability remaining after the data backhaul is performed according to the backhaul capability;
- a second information receiving module configured to receive the backhaul control information that is broadcast by the first network device, where the backhaul control information is a backhaul request sent by the first network device according to the information state information, the second network device, The remaining backhaul capability information is obtained, where the backhaul control information includes backhaul network topology control information and physical resource allocation information;
- a third data backhaul module configured to perform data backhaul according to the backhaul control information.
- the network device further includes: a sixth receiving module, configured to receive a reference signal indication message broadcast by the first network device, where the reference signal indication message is used Indicates to send a reference signal or to perform information status information measurement.
- the network device when the reference signal indication message received by the sixth receiving module indicates that the reference signal is sent, the network device further includes:
- a fifth sending module configured to send a reference signal according to the reference signal indication message; when the reference signal indication message received by the sixth receiving module indicates that the information state information is measured, the network device further includes:
- a third measurement module configured to: according to the indication of the reference signal indication message, the measurement feedback amount precoding matrix indication PMI, the channel quality indicator CQI, and the rank Rank to obtain channel state information, where Information status information includes feedback quantities PMI, CQI, and Rank;
- a sixth sending module configured to send the information state information to the first network device.
- the foregoing network device further includes: a fourth measurement module, configured to measure information state information according to the reference signal resource; the reference signal includes a common reference signal CRS and a demodulation reference Signal DMRS;
- a seventh sending module configured to send information state information measured by the fourth measurement module to the first network device.
- the remaining backhaul capability information includes a margin of backhaul capability, a delay size experienced by the backhaul, a buffer size, a charging method of the backhaul, a network type of the backhaul, and a backhaul link. At least one of the reliability indicators.
- a fourth aspect of the present invention provides a system for implementing data backhaul, which may include: a first network device, a second network device, and a third network device;
- the first network device is configured to acquire, according to the information state information, the backhaul request of the second network device, and the remaining backhaul capability information of the third network device, the data of the second network device and the third network device to be controlled. Returning the backhaul control information; and broadcasting the backhaul control information to the second network device and the third network device, so that the second network device and the third network device perform according to the backhaul control information Data back
- the second network device is configured to send a backhaul request to the first network device, where the backhaul request is used to request backhaul control information from the first network device; and receive the broadcast by the first network device Returning control information, and performing data back transmission according to the backhaul control information;
- the third network device is configured to send, to the first network device, remaining backhaul capability information, where the remaining backhaul capability information includes information about a backhaul capability remaining after data back according to its own backhaul capability; Returning control information sent by the first network device, and performing data back transmission according to the backhaul control information;
- the backhaul control information includes backhaul network topology control information and physical resource allocation information.
- the foregoing first network device is further used to And transmitting, by the second network device and the third network device, a reference signal indication message, where the reference signal indication message is used to indicate that one or more of the second network device and the third network device are used to send the reference signal,
- Other network devices are used for information state information measurement.
- the foregoing first network device is further configured to receive information state information sent by the second network device and the third network device,
- the information status information is measured by the second network device and the third network device according to the reference signal indication message;
- the information status information includes a precoding matrix indication feedback amount PMI, a channel quality indicator CQI, and a Rank.
- the foregoing first network device is further configured to obtain information state information by using a third-party database.
- the foregoing first network device is further configured to receive information state information sent by the second network device and the third network device, where the information state information is The second network device and the third network device are measured according to a reference signal resource, where the reference signal resource includes a common reference signal CRS and a demodulation reference signal DMRS.
- the first network device is further configured to receive a backhaul request sent by the second network device, where the backhaul request includes a service that needs to be sent back At least one of the total amount of data, the allowed transmission delay, the priority of the backhaul service, the minimum rate that the backhaul service needs to support, and the source/destination network information of the backhaul service.
- the foregoing first network device is further configured to receive the remaining back sent by the third network device Transmitting capability information, where the remaining backhaul capability information includes a margin of backhaul capability, a delay size experienced by the backhaul, a buffer size, a charging method of the backhaul, a network type of the returned transmission, and a backhaul link. At least one of the reliability indicators.
- the backhaul network topology control information in the control information includes at least one backhaul path, the backhaul path is allocated to the second network device that sends the backhaul request; and the physical resource allocation information in the backhaul control information is included in the use.
- the backhaul path included in the network topology control information is returned, the corresponding physical resource that can be utilized by the backhaul path;
- the second network device is specifically configured to perform data backhaul by using the physical resource indicated by the physical resource allocation information on a backhaul path included in the backhaul network topology control information.
- a fifth aspect of the present invention provides a method for implementing data backhaul, which may include:
- the backhaul control information includes backhaul network topology control information and physical resource allocation information;
- the obtaining, before the acquiring, by the second network device, the third network device, the backhaul control information for performing data backhaul includes the following steps:
- the method includes the following steps: Information state information sent by the second network device and the third network device, where the information state information is measured by the second network device and the third network device according to the reference signal indication message, where the information state information includes a precoding matrix Indicates PMI, Channel Quality Indicator CQI, and Rank Rank.
- the obtaining, before the acquiring, by the second network device and the third network device, the backhaul control information for performing data backhaul includes the following steps:
- the information status information is obtained through a third-party database.
- the obtaining, by the acquiring, the backhaul control information of the second network device and the third network device to perform data backhaul includes the following steps:
- the obtaining, by the obtaining, the control, by the second network device and the third network device, before performing the data backhaul control information includes the following steps:
- a backhaul request includes a total amount of data that needs to be returned, a permitted transmission delay, a priority of the backhaul service, and a minimum rate that the backhaul service needs to support. And at least one of source/destination network information of the backhaul service.
- the obtaining, by the second network device, and the third network device, performing backhaul of the data backhaul includes steps before:
- the remaining backhaul capability information includes a margin of backhaul capability, a delay size experienced by the backhaul, a buffer size, a charging method of the backhaul, and a backhaul Passing at least one of the arriving network type and the reliability indicator of the backhaul link.
- the backhaul control information includes at least one backhaul path, the backhaul path is allocated to the second network device that sends the backhaul request; and the physical resource allocation information in the backhaul control information is included in the use of the back And corresponding physical resources that can be utilized by the backhaul path when the backhaul path included in the network topology control information is transmitted;
- the second network device and the third network device perform data according to the backhaul control information. Return, including:
- the second network device performs data backhaul on the backhaul path included in the backhaul network topology control information by using the physical resource indicated by the physical resource allocation information; the third network device according to the The control information is returned, and the data backhaul is performed by using its own backhaul capability.
- a sixth aspect of the present invention provides a method for implementing data backhaul, which may include:
- backhaul request is used to request backhaul control information from the first network device, where the backhaul control information includes backhaul network topology control information and physical resource allocation Information
- the receiving the backhaul control information broadcast by the first network device includes:
- the method includes:
- the reference signal is sent according to the reference signal indication message
- the channel state information is obtained according to the indication of the reference signal indication message, the measurement feedback amount precoding matrix indication PMI, the channel quality indicator CQI, and the rank Rank, and Information state information measured by the first network device, where the information state information includes feedback quantities PMI, CQI, and Rank.
- the receiving the backhaul control information broadcast by the first network device includes:
- the backhaul request includes a size of a total amount of data to be returned, an allowed transmission delay, a priority of a backhaul service, a minimum rate that the backhaul service needs to support, and a source/destination network of the backhaul service. At least one of the information.
- the backhaul network topology control information in the backhaul control information includes at least one backhaul path, and the backhaul path is allocated to send back The requested second network device;
- the physical resource allocation information in the backhaul control information includes a corresponding physical resource that can be utilized by the backhaul path when using the backhaul path included in the backhaul network topology control information;
- the data returning according to the backhaul control information includes:
- a seventh aspect of the present invention provides a method for implementing data backhaul, which may include:
- the remaining backhaul capability information is used to notify the first network device of the remaining backhaul capability, wherein the backhaul control information includes the backhaul network topology Control information and physical resource allocation information;
- the receiving the backhaul control information broadcast by the first network device includes:
- the method includes: And if the received reference signal indication message indicates that the reference signal is sent by itself, the reference signal is sent according to the reference signal indication message;
- the channel state information is obtained according to the indication of the reference signal indication message, the measurement feedback amount precoding matrix indication PMI, the channel quality indicator CQI, and the rank Rank, and Information state information measured by the first network device, where the information state information includes feedback quantities PMI, CQI, and Rank.
- the receiving the backhaul control information broadcast by the first network device includes:
- the reference signal resource comprises a common reference signal CRS and a demodulation reference signal DMRS.
- the remaining backhaul capability information includes a margin of backhaul capability, a delay size experienced by the backhaul, a buffer size, a charging method of the backhaul, a network type of the backhaul, and a backhaul link. At least one of the reliability indicators.
- the embodiments of the present invention have the following advantages:
- the second network device sends a backhaul request to the first network device to request the first network device to send the backhaul control information to return the data.
- the third network device sends the remaining back to the first network device. Transmitting capability information to notify the remaining backhaul capability that the first network device can utilize; therefore, the first network device can be based on the backhaul request sent by the second network device and the remaining backhaul capability information sent by the third network device, and the network The information state information is used to obtain backhaul control information for controlling the second network device and the third network device to perform data backhaul.
- the embodiment of the present invention can centrally manage the second network device and the third network device by using the first network device, and realize centralized allocation of the backhaul resources to the second network device and the third network device, thereby improving the entire network.
- Data return capacity
- FIG. 2 is a schematic structural diagram of a network device according to an embodiment of the present disclosure
- FIG. 3 is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 3 is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 3 is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 3 is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention.
- FIG. 5-a is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 5-b is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 5 is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 6 is a schematic diagram of a basic structure of a network device according to an embodiment of the present invention
- Figure 7-a is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- Figure 7-b is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 7-d is a schematic diagram of a basic structure of a network device according to another embodiment of the present invention
- FIG. 8 is a schematic structural diagram of a system for implementing data backhaul according to an embodiment of the present invention
- b is a system layout diagram for implementing data backhaul according to an embodiment of the present invention
- FIG. 9 is a schematic flowchart of a method for implementing data backhaul according to an embodiment of the present invention
- FIG. 9-b is an implementation data provided by an embodiment of the present invention
- FIG. 9 is a schematic flowchart of a method for implementing a data backhaul according to an embodiment of the present invention
- FIG. 10 is a schematic flowchart of a method for implementing a data backhaul according to another embodiment of the present invention.
- -b is a schematic flowchart of a method for implementing a data backhaul according to another embodiment of the present invention.
- FIG. 10-c is a schematic flowchart of a method for implementing a data backhaul according to another embodiment of the present invention.
- Embodiments of the present invention provide a network device and a system and method for implementing data backhaul, which are used for centrally allocating backhaul resources in a network, and improving data backhaul capacity of the entire network.
- an embodiment of the present invention provides a network device 200, which may include:
- the obtaining module 210 is configured to acquire, according to the information state information, the backhaul request of the second network device, and the remaining backhaul capability information of the third network device, the control of the second network device and the third network device to perform data backhaul. Transmitting control information, where the backhaul control information includes backhaul network topology control information and physical resource allocation information;
- the broadcast module 220 is configured to broadcast the backhaul control information to the second network device and the third network device, so that the second network device and the third network device perform data backhaul according to the backhaul control information. .
- the obtaining module 210 acquires the backhaul control information for controlling the data backhaul of the second network device and the third network device according to the information state information, the backhaul request of the second network device, and the remaining backhaul capability information of the third network device.
- the backhaul control information includes the backhaul network topology control information and the physical resource allocation information, and the broadcast module 220 sends the obtained backhaul control information to the second network device and the third network device, and further the second network.
- the device and the third network device can perform data backhaul according to the backhaul control information, thereby implementing centralized control of data backhaul of the second network device and the third network device, and improving the capacity of the entire backhaul network.
- nodes In the LTE network, three types of nodes are specifically defined:
- D-Node (Donor Node), a macro node with large coverage capability, which itself has the ability to connect to the core network;
- An M-Node capable of implementing wireless communication with the D-Node on at least one carrier, and capable of implementing wireless communication with the neighboring M-Node on at least one carrier;
- the MG-Node (Mesh-Gateway Node) is a functional combination node of the M-Node and the G-Node (Gateway Node).
- the G-Node has the capability of directly transmitting back to the core network in addition to the D-Node. . Therefore, the MG-Node can be implemented not only with the D-Node on at least one carrier.
- Wireless communication and capable of wireless communication with adjacent M-Nodes on at least one carrier, and also has the ability to directly transmit back to the core network in addition to the D-Node.
- the coverage network of the D-Node includes at least one M-Node and at least one M-G-Node.
- the network device 200 provided in the embodiment of the present invention is in the foregoing LTE network.
- the D-Node, the second network device is the foregoing M-Node
- the third network device is the foregoing MG-Node.
- the D-Node may be a base station; the M-Node and the MG-Node may specifically be a base station, or may be A UE capable of providing access to other terminal devices or a UE having a certain backhaul capability.
- the network device 200 may further include:
- a first broadcast module 310 configured to broadcast, to the second network device and the third network device, a reference signal indication message, where the reference signal indication message is used to indicate one of the second network device and the third network device
- Multiple network devices are used to transmit reference signals, while other network devices are used for information state information measurements.
- the network device 200 is configured to perform centralized control on the second network device and the third network device, and send back control information of the control data back to the second network device and the third network device, where the backhaul control information is a network device
- the obtaining module 210 of 200 is obtained according to the information state information sent by the second network device and the third network device, the backhaul request sent by the second network device, and the remaining backhaul capability information of the third network device.
- the information state information in the network is dynamically changed, and the second network device and the third network device in the network are centrally controlled by the network device 200, and thus, in the network device 200, before the obtaining module 210 acquires the backhaul control information.
- the first broadcast module 310 broadcasts a reference signal indication message to the second network device and the third network device in the network, where the reference signal indication message is specifically used to indicate one or more of the second network device and the third network device.
- the reference signal indication message is specifically used to indicate one or more of the second network device and the third network device.
- the other second network device and the third network device that are not used to transmit the reference signal in the reference signal indication message need to perform channel state information measurement on the corresponding resource of the reference signal indication message.
- the foregoing reference signal may specifically include a channel status indication reference signal CSI-RS.
- CSI-RS Cell-Specific Channel State Indication Reference Signal
- CSI-IM Cell-Specific Channel State Indication Interference Measurement
- the reference signal indication message After receiving the reference signal indication message broadcast by the network device 200, if the reference signal indication message indicates that the reference signal is sent by the second network device and the third network device, the reference signal indication message carries the transmission reference. a resource of the signal, then the reference signal will be sent by the resource indicated by the reference signal indication message; if the reference signal indicates that the message does not indicate the transmission of the reference signal, the feedback amount, such as a precoding matrix indication, will be indicated according to the indication of the reference signal indication message ( Precoding
- the channel state information is measured by CQI) and Rank (Rank), and the obtained channel state information is transmitted to the network device 200.
- the network device 200 further includes a first receiving module.
- channel state information sent by the second network device and the third network device, where the channel state information includes feedback quantities PMI, CQI, and Rank.
- the M-Node and the MG-Node perform channel state information measurement according to the reference signal indication message broadcasted by the network device 200, and measure the feedback quantity PMI, CQI, and Rank, and then measure
- the channel state information includes PML CQI and Rank.
- the second mode as shown in Figure 3-c, the network device 200 further includes:
- the second obtaining module 330 is configured to obtain the information state information by using a third-party database.
- the third-party database refers to the above-mentioned channel state information database obtained by measurement, feedback, and the like. For example, a database of channel state information generated by a mathematical model by known geographical location information, or a database formed by measuring with other devices and saving the measurement results.
- the second network device and the third network device according to other reference signal resources, such as a common reference signal (Cell-Specific) Reference Signals (CRS) or demodulation reference signals (UE-Specific Reference Signals, DMRS) are measured and sent to the first network device. Therefore, as shown in FIG. 3-d, the network device 200 further includes:
- the second receiving module 340 is configured to receive information state information sent by the second network device and the third network device, where the information state information is obtained by the second network device and the third network device according to the reference signal resource.
- the reference signal resources include a common reference signal CRS and a demodulation reference signal DMRS.
- the second network device does not have the capability of connecting to the core network.
- the network device 200 is requested to allocate a backhaul resource to implement data backhaul by sending a backhaul request to the network device 200.
- the third network device can also make a backhaul request to the network device 200 when needed. Therefore, as shown in FIG. 3-e, the network device 200 further includes:
- the third receiving module 350 is configured to receive a backhaul request sent by the second network device, where the backhaul request includes: a size of the total data volume of the returned service, an allowed transmission delay, a priority of the backhaul service, and a backhaul At least one of the minimum backhaul rate and the source/destination network information of the backhaul service that the service needs to support.
- the second network device can perform uplink and downlink downlink transmission. Specifically, when the second network device that sends the backhaul request is used as the uplink device, the backhaul request sent to the network device 200 may specifically be an uplink backhaul request; When the requesting second network device is used as the downlink device, the backhaul request sent to the network device 200 may specifically be a downlink backhaul request.
- the source/destination network information of the backhaul service may specifically include a source/destination network type, a source/destination network address, and the like.
- the network type and network address may be network types and network addresses involved in the field of communication. For example, if the second network device sends a downlink backhaul request, then
- the source network type may be the Internet
- the source network address may be an address of the Internet
- the destination network type may be a telecommunication network
- the destination network address may be a network identifier of the second network device that proposes the return request.
- the source network type may be a telecommunication network
- the source network address may be a network identifier of the second network device that sends the backhaul request
- the destination network type may be the Internet
- the network address can be an internet address.
- the network device 200 further includes a fourth receiving module 340;
- the fourth receiving module 360 is configured to receive remaining backhaul capability information sent by the third network device, where the remaining backhaul capability information includes a margin of the backhaul capability, a delay size experienced by the backhaul, and a buffer area. At least one of size, return charging method, network type of returning arrival, and reliability indicator of the backhaul link.
- the margin of the backhaul capability is a data rate size that the third network device can additionally support;
- the charging method may include free, monthly billing, or according to the flow rate;
- the network type may include the Internet, the core of the telecom operator.
- Network, network device 200 or other proprietary network that is to say, through the third network device, data can be returned to the Internet, the core network of the telecom operator, other network devices 200 or other proprietary networks;
- the reliability index of the backhaul link is Refers to the probability of interruption of the return path.
- the third network device has the capability of directly connecting to the core network for backhauling, and the network device 200 knows the remaining backhaul capability information of the third network device before the backhaul control resource is allocated, so as to be able to be based on the remaining of the third network device.
- the backhaul capability information appropriately allocates the backhaul control resources.
- the foregoing broadcast module is specifically configured to send the backhaul control information to the second network device and the third network device, so that the second network device is in the backhaul network topology control information.
- the data backhaul is performed by using the physical resource indicated by the physical resource allocation information; after receiving the backhaul control information, the third network device uses the backhaul control information according to the backhaul control information.
- the data transmission back is carried out by its own backhaul capability.
- the backhaul control information includes backhaul network topology control information and physical resource allocation information.
- the backhaul network topology control information mainly includes at least one backhaul path, where the backhaul path is mainly allocated by the network device 200 to the second network device that sends the backhaul request, and is used by the second network device to perform backhaul data.
- each return path includes one or more hop connections, and each hop connection represents data transmission between two second network devices or between the second network device and the third network device aisle.
- each return path is included in the physical resource allocation information.
- the physical resource allocation information includes corresponding physical resources that are available for each hop connection when the data is returned on each hop connection, and the physical resource includes each hop.
- the foregoing time domain resource is specifically a set of time slot resources in the system; the frequency domain resource is specifically carrier information and smaller granularity frequency domain resource information in the carrier, for example, a PRB set in an LTE system; the spatial domain resource may be a pre Certain precoding information in the defined codebook or selection information for a plurality of directional beams; the code domain resource may be indication information of one or more of the available orthogonal/quasi-orthogonal code sets.
- the physical resource allocation information may also indicate a Modulation and Coding Scheme (MCS) information that is recommended to be used.
- MCS Modulation and Coding Scheme
- the data backhaul is performed by using the corresponding physical resource on the path to which the backhaul control information is assigned.
- the backhaul control information is for an uplink backhaul request sent by the second network device
- the uplink backhaul is mainly returned by the second network device to the third network device, if the backhaul control information is used.
- the return path of the network topology control information includes multiple hops, and then the second network device returns the data to be returned back to the receiving end of the first hop, and then returns from the receiving end of the first hop to the first hop.
- the third network device completes the backhaul through the backhaul network that it has; similarly, if the backhaul control information is for the downlink backhaul request, the downlink is assumed
- the transmission is mainly performed by the third network device to the second network device, and the third network device according to the backhaul control information sent by the network device 200 to the second network device at the receiving end, according to the return path indicated by the backhaul control information,
- the data is passed back to the second network device hop by hop.
- the backhaul data can be split into multiple backhaul path transmissions, which can achieve faster return speed.
- an embodiment of the present invention further provides a network device 400, which may include:
- the request sending module 410 is configured to send a backhaul request to the first network device, where the backhaul request is used to request the backhaul control information to the first network device, where the backhaul control information includes a backhaul network extension Park control information and physical resource allocation information;
- the first information receiving module 420 is configured to receive a backhaul control message broadcast by the first network device
- the backhaul control information is obtained by the first network device according to the information state information, the backhaul request, and the remaining backhaul capability information sent by the third network device.
- the first data backhaul module 430 is configured to perform data backhaul according to the backhaul control information.
- the request sending module 410 of the network device 400 sends a backhaul request to the first network device to request the backhaul control information to the first network device, and then the first information receiving module 420 receives the first network device.
- the backhaul control information of the broadcast where the backhaul control information includes the backhaul network topology control information and the physical resource allocation information, and the data backhaul module 430 performs the data according to the backhaul control information received by the first information receiving module 420. Backhaul, thereby increasing the capacity of the entire backhaul network.
- nodes In the LTE network, three types of nodes are specifically defined:
- the M-Node can implement wireless communication with the D-Node on at least one carrier, and can be at least with the adjacent M-Node Wireless communication on one carrier;
- the M-G-Node is a functional combination node of the M-Node and the G-Node, and the G-Node has the capability of directly transmitting back to the core network in addition to the D-Node. Therefore, the MG-Node can not only implement wireless communication with the D-Node on at least one carrier, but also can implement wireless communication with the adjacent M-Node on at least one carrier, and also has direct connection with the core network except through the D-Node. The ability to return.
- the coverage network of the D-Node includes at least one M-Node and at least one M-G-Node.
- the first network device provided in the embodiment of the present invention is a D-Node in the foregoing LTE network
- the network device 400 is the foregoing M-Node
- the third network device is the foregoing MG-Node
- the D-Node may be specifically
- the M-Node and the MG-Node may be a base station, or may be a UE capable of providing access to other terminal devices or a UE having a certain backhaul capability.
- the network device 400 provided in Figure 4 above is further described below:
- the network device 400 performs data back transmission according to the backhaul control information sent by the first network device, and the backhaul control information is sent by the first network device according to the information state information in the network, the backhaul request sent by the network device 400, and the third network device.
- the remaining backhaul capability information is obtained, and the information state information in the network may be measured by the network device 400 and the third network device and sent to the first network device,
- the network device 400 measures information status information by using the following methods:
- the network device 400 further includes:
- the fifth receiving module 510 is configured to receive a reference signal indication message sent by the first network device, where the reference signal indication message is used to indicate to send a reference signal or perform information state information measurement.
- the network device 400 measures the information status information, which may be performed on the premise that the first network device sends the reference signal indication message.
- the reference signal indication message is mainly sent by the first network device, and is used to indicate that one or more of the network device 400 and the third network device are used for transmitting the reference signal, and the others are used for performing the information state information measurement.
- the reference signal may include CSI-RS and/or CSI-IM and the like.
- the network has network devices 400: 2A, 2B, 2C and 2D; third network device: 3A,
- one or more of the above network device 400 and third network device can be understood as follows:
- the network device 400 when the reference signal indication message received by the fifth receiving module 510 indicates that the network device 400 is configured to send a reference signal, the network device 400 further includes:
- the first sending module 520 is configured to: if the reference signal is sent according to the reference signal indication message; as shown in FIG. 5-c, when the reference signal indication message received by the fifth receiving module 510 indicates that the network device 400 is used for measurement
- the information device also includes:
- the first measurement module 530 is configured to: if the received reference signal indication message is used to indicate that the information state information is measured, the measurement feedback amount precoding matrix indication PMI, the channel quality indicator CQI, according to the indication of the reference signal indication message Obtaining channel state information and measuring information state information to the first network device, wherein the information state information includes feedback quantities PMI, CQI, and Rank;
- the second sending module 540 is configured to send the information state information to the first network device.
- the network device 400 performs channel state information measurement, it is mainly broadcast according to the first network device.
- the reference signal indication message is used for measurement. Therefore, the fifth receiving module 510 in the network device 400 is specifically configured to receive a reference signal indication message sent by the first network device, where the reference signal indication message is used to indicate to send the reference signal or perform channel status.
- the information transmission when the reference signal indication message indicates that the network device 400 sends the reference signal, the network device 400 further includes a first sending module 520, where the first sending module 520 sends the reference signal according to the indication of the reference signal indication message;
- the network device 400 includes a first measurement module 530, and the first measurement module 530 measures the feedback quantities PMI, CQI, and Rank according to the indication of the reference signal indication message.
- the channel state information includes feedback quantities PMI, CQI, and Rank; then, the second sending module 540 sends the measured channel state information to the first network device.
- the foregoing reference signal may specifically include CSI-RS and/or CSI-IM and the like.
- the network device 400 and the third network device perform measurement according to other reference signal resources, such as CRS or DMRS, to obtain information.
- the status information is sent to the first network device. Therefore, as shown in FIG. 5-d, the network device 400 further includes:
- the second measurement module 550 is configured to measure information state information according to the reference signal resource; the reference signal resource includes a common reference signal CRS and a demodulation reference signal DMRS.
- the third sending module 560 is configured to send the information status information measured by the second measurement module 550 to the first network device.
- the first network device may be directly obtained from the database of the third-party database, which is not limited herein.
- the network device 400 can perform uplink and downlink downlink transmission. Specifically, when the network device 400 that sends the backhaul request is used as the uplink device, the backhaul request sent to the first network device may be an uplink backhaul request. When the requested network device 400 is used as the downlink device, the backhaul request sent to the first network device may be a downlink backhaul request, where the backhaul request may include one or more of the following contents:
- Al the total amount of data of the service that needs to be returned
- A2 acceptable transmission delay
- A3 the priority level of the return service
- A5. Source/destination network information of the backhaul service.
- the network information may include source/destination network type information and source/destination network addresses, and the network type and network address may be network types and network addresses involved in the communication field.
- the source network type may be the Internet
- the source network address may be the address of the Internet
- the destination network type may be the telecommunication network
- the destination network address may be The network identifier of the network device 400 of the request is returned.
- the source network type may be a telecommunication network
- the source network address may be a network identifier of the network device 400 that sends the backhaul request
- the destination network type may be the Internet, the destination network address. It can be an internet address.
- the remaining backhaul capability information sent by the third network device to the first network device includes one or more of the following contents:
- the margin of the backhaul capability of B1 is the data rate size that the third network device can additionally support;
- the charging method of B4 may include free, monthly billing or according to the flow rate;
- the network type of B5 may include the Internet.
- the reliability index of the backhaul link refers to the probability of interruption of the backhaul path.
- the backhaul control information includes backhaul network topology control information and physical resource allocation information.
- the backhaul network topology control information mainly includes at least one backhaul path, where the backhaul path is mainly allocated by the first network device to the network device 400 that sends the backhaul request, which is used by the network device 400 to perform backhaul data. Return path, where each return path contains one or more hop connections. Each hop connection represents a data transmission channel between two network devices 400, or between network device 400 and a third network device.
- the physical resource allocation information includes the available physical resources corresponding to each of the backhaul paths. Specifically, the physical resource allocation information includes each hop when the data is returned on each hop connection.
- the corresponding physical resource that is available for connection includes a time domain, a frequency domain, an air domain, a code domain, and the like that can be used for each hop connection.
- the foregoing time domain resource is specifically a set of time slot resources in the system;
- the frequency domain resource is specifically carrier information and smaller granularity frequency domain resource information in the carrier, for example, a PRB set in an LTE system;
- the spatial domain resource may be a pre Certain precoding information in the defined codebook or selection information for a plurality of directional beams;
- the code domain resource may be indication information of one or more of the available orthogonal/quasi-orthogonal code sets.
- the physical resource allocation information may also indicate MCS information recommended for use. It should be noted that a plurality of the foregoing connections may be defined between the two network devices 400, and the physical resources corresponding to the multiple connections may be partially the same.
- the data backhaul is performed by using the corresponding physical resource on the path to which the backhaul control information is allocated; specifically, if the backhaul control information is for the network device
- An uplink backhaul request sent by 400 assuming that the uplink backhaul is mainly returned by the network device 400 to the third network device, if the backhaul path of the backhaul network topology control information in the backhaul control information includes multiple hops, then The network device 400 transmits the data to be returned back to the receiving end of the first hop, and then returns from the receiving end of the first hop to the receiving end of the second hop until the data is transmitted back to the third network device, where When the data is returned on each hop of the backhaul path, the physical resources allocated in the information may be allocated by using the physical resources.
- the third network device completes the backhaul through the backhaul network that it has; similarly, if the backhaul control information is for the downlink backhaul request, the downlink backhaul is assumed.
- the data is sent by the third network device to the network device 400, and the third network device hops according to the backhaul control information sent by the first network device to the receiving network device 400 according to the backhaul path indicated by the backhaul control information.
- the data is passed back to the network device 400.
- the backhaul data can be split into multiple backhaul path transmissions, which can achieve faster return speed.
- the embodiment of the present invention further provides a network device 600, which may include:
- the backhaul capability sending module 610 is configured to send the remaining backhaul capability information to the first network device, where the remaining backhaul capability information includes the remaining backhaul energy after the data backhaul is performed according to the self-backhaul capability.
- Information of force
- the second information receiving module 620 is configured to receive the backhaul control information that is broadcast by the first network device, where the backhaul control information is a backhaul request sent by the first network device according to the information state information and the second network device. The remaining backhaul capability information is obtained, where the backhaul control information includes backhaul network topology control information and physical resource allocation information;
- the third data backhaul module 630 is configured to perform data backhaul according to the backhaul control information.
- the backhaul capability sending module 610 sends the remaining backhaul capability information to the first network device, and the first network device obtains the backhaul according to the remaining backhaul capability information, the information state information, and the backhaul request sent by the second network device.
- the third data returning module 630 performs data backhaul according to the backhaul control information, thereby improving the capacity of the backhaul network.
- nodes In the LTE network, three types of nodes are specifically defined:
- D-Node a macro node with large coverage capability, which itself has the ability to connect with the core network
- the M-Node is capable of implementing wireless communication with the D-Node on at least one carrier, and is capable of implementing wireless communication with the neighboring M-Node on at least one carrier;
- the M-G-Node is a functional combination node of the M-Node and the G-Node, and the G-Node has the capability of directly transmitting back to the core network in addition to the D-Node. Therefore, the MG-Node can not only implement wireless communication with the D-Node on at least one carrier, but also can implement wireless communication with the adjacent M-Node on at least one carrier, and also has direct connection with the core network except through the D-Node. The ability to return.
- the coverage network of the D-Node includes at least one M-Node and at least one M-G-Node.
- the first network device provided in the embodiment of the present invention is a D-Node in the foregoing LTE network
- the second network device is the foregoing M-Node
- the network device 600 is the foregoing MG-Node
- the D-Node may be specifically
- the M-Node and the MG-Node may be a base station, or may be a UE capable of providing access to other terminal devices or a UE having a certain backhaul capability.
- the network device 600 provided in Figure 6 above is further described below:
- the network device 600 performs data back transmission according to the backhaul control information sent by the first network device, and the backhaul control information is sent by the first network device according to the information state information in the network and the second network device.
- the request and the remaining backhaul capability information sent by the network device 600 are obtained, and the information state information in the network may be measured by the second network device and the network device 600 and then sent to the first network device, specifically, the network device 600 measures Information status information can be obtained in the following ways:
- Method 1 as shown in Figure 7-a, the foregoing network device further includes:
- the sixth receiving module 710 is configured to receive a reference signal indication message broadcast by the first network device, where the reference signal indication message is used to indicate to send a reference signal or perform information state information measurement.
- the network device 600 measures the information status information, which may be performed on the premise that the first network device sends the reference signal indication message.
- the reference signal indication message is mainly sent by the first network device, and is used to indicate that one or more of the second network device and the network device 600 are used for transmitting the reference signal, and the others are used for performing the information state information measurement.
- the foregoing reference signal may specifically include CSI-RS and/or CSI-IM and the like.
- the network device 600 when the reference signal indication message received by the sixth receiving module 710 is used to indicate that the network device 600 is configured to send a reference signal, the network device 600 further includes:
- the fifth sending module 720 is configured to send a reference signal according to the reference signal indication message.
- the network device 600 when the reference signal indication message received by the sixth receiving module 710 indicates that the network device 600 performs the measurement of the information status information, the network device 600 further includes:
- the third measurement module 730 is configured to: according to the indication of the reference signal indication message, the measurement feedback amount precoding matrix indication PMI, the channel quality indicator CQI, and the Rank to obtain channel state information, where the information state information includes the feedback amount PMI, CQI And Rank;
- the sixth sending module 740 is configured to send the information state information to the first network device.
- the network device 600 performs channel state information measurement, it is mainly broadcast according to the first network device.
- the reference signal indication message is used for measurement. Therefore, the sixth receiving module 710 in the network device 600 is specifically configured to receive a reference signal indication message sent by the first network device, where the reference signal indication message is used to indicate to send the reference signal or perform channel status.
- the network device 600 further includes a fifth sending module 720, and the fifth sending module 720 sends the reference signal according to the indication of the reference signal indication message;
- the network device 600 includes a third measurement module 730, and the third measurement module 730 measures the feedback amount PMI, CQI, and according to the indication of the reference signal indication message.
- the slot obtains channel state information; wherein, the channel state information includes feedback quantities PMI, CQI, and Rank; thereafter, the sixth sending module 740 transmits the measured channel state information to the first network device.
- Manner 2 In the case that the first network device does not need to send the reference signal indication message for information state information measurement, the second network device and the network device 600 perform measurement according to other reference signal resources, such as CRS or DMRS, to obtain information. The status information is sent to the first network device. Therefore, as shown in FIG. 7-d, the network device 600 further includes:
- a fourth measurement module 750 configured to measure information state information according to the reference signal resource;
- the reference signal includes a common reference signal CRS and a demodulation reference signal DMRS;
- the seventh sending module 760 is configured to send the information status information measured by the fourth measurement module 750 to the first network device.
- the first network device may be directly obtained from the database of the third-party database, which is not limited herein.
- the third-party database refers to the channel state information database obtained by other methods such as measurement and feedback.
- a database of channel state information generated by a mathematical model by known geographical location information or a database formed by measuring with other devices and storing the measurement results.
- the backhaul request sent by the foregoing second network device to the first network device may include the following A4.
- A5. Source/destination network information of the backhaul service.
- the source/destination network information may include source/destination network type information and source/destination network addresses, and the network type and network address may be network types and network addresses involved in the communication field.
- the second network device can perform uplink and downlink downlink transmission. Specifically, when the second network device that sends the backhaul request is used as the uplink device, the backhaul request sent to the first network device may be an uplink backhaul request. When the second network device that sends back the request is the downlink device, the backhaul request sent to the first network device may specifically be a downlink backhaul request.
- the source network type may be the Internet
- the source network address may be the address of the Internet
- the destination network type may be the telecommunication network
- the destination network address may be A network identifier of the second network device that requests the return request, and the like.
- the source network type may be a telecommunication network
- the source network address may be a network identifier of the second network device that sends the backhaul request
- the destination network type may be the Internet.
- the network address can be an internet address.
- the remaining backhaul capability information sent by the network device 600 to the first network device includes one or more of the following contents:
- the network type that can be reached by the network device 600 is returned;
- the margin of the backhaul capability of B1 is the data rate size that the network device 600 can additionally support;
- the charging method of B4 may include free, monthly billing or according to the flow rate;
- the network type of B5 may include the Internet,
- the reliability index of the transmitted link refers to the probability of interruption of the return path.
- the backhaul control information includes backhaul network topology control information and physical resource allocation.
- the backhaul network topology control information mainly includes at least one backhaul path, where the backhaul path is mainly a second network device allocated by the first network device to send a backhaul request, and the second network device can be used for performing backhaul.
- a return path of data wherein each backhaul path includes one or more hop connections, and each hop connection represents between two second network devices, or between the second network device and the third network device Data transmission channel.
- the physical resource allocation information includes the available physical resources corresponding to each of the backhaul paths. Specifically, the physical resource allocation information includes each hop when the data is returned on each hop connection.
- the corresponding physical resource that is available for connection includes a time domain, a frequency domain, an air domain, a code domain, and the like that can be used for each hop connection.
- the foregoing time domain resource is specifically a set of time slot resources in the system;
- the frequency domain resource is specifically carrier information and smaller granularity frequency domain resource information in the carrier, for example, a PRB set in an LTE system;
- the spatial domain resource may be a pre Certain precoding information in the defined codebook or selection information for a plurality of directional beams;
- the code domain resource may be indication information of one or more of the available orthogonal/quasi-orthogonal code sets.
- the physical resource allocation information may also indicate MCS information recommended for use. It should be noted that a plurality of the foregoing connections may be defined between the two second network devices, and the physical resources corresponding to the multiple connections may be partially the same.
- the data backhaul is performed by using the corresponding physical resource on the path to which the backhaul control information is allocated; specifically, if the backhaul control information is for the first
- the uplink backhaul request sent by the network device is assumed to be that the uplink backhaul is mainly transmitted by the second network device to the network device 600. If the backhaul path of the backhaul network topology control information in the backhaul control information includes multiple hops Then, the second network device returns the data to be sent back to the receiving end of the first hop, and then returns from the receiving end of the first hop to the receiving end of the second hop until the data is transmitted back to the network device 600.
- the physical resources allocated in the physical resource allocation information may be utilized when the data is returned on each hop of the return path.
- the network device 600 completes the backhaul through the backhaul network that it has; similarly, if the backhaul control information is for the downlink backhaul request, the downlink backhaul is assumed.
- the data is sent by the network device 600 to the second network device.
- the network device 600 hops according to the backhaul control information sent by the first network device to the second network device at the receiving end according to the backhaul path indicated by the backhaul control information.
- the data is passed back to the second network device.
- the embodiment of the present invention further provides a system 800 for implementing data backhaul, which may include: the first network device 200 as shown in any one of FIG. 2 to FIG. 4 to the second network device 400 according to any one of FIG. 5-d and the third network device 600 as described in any one of FIG. 6 to FIG. 7-d;
- the first network device 200 is configured to acquire and control the second network device 400 and the third according to the information state information, the backhaul request of the second network device 400, and the remaining backhaul capability information of the third network device 600.
- the network device 600 performs backhaul control information of the data backhaul; and sends the backhaul control information to the second network device 400 and the third network device 600, so that the second network device 400 and the third network device 600 performing data back transmission according to the backhaul control information;
- the second network device 400 receives the backhaul control information sent by the first network device 200, and performs data backhaul according to the backhaul control information;
- the third network device 600 receives the backhaul control information sent by the first network device 200, and performs data backhaul according to the backhaul control information;
- the backhaul control information includes backhaul network topology control information and physical resource allocation information.
- the system for implementing data backhaul provided by the embodiment of the present invention mainly includes a first network device.
- the present invention performs centralized allocation of the backhaul resources through the first network device 200, and can effectively perform centralized control. Management, improving the backhaul network capacity of the second network device 400 and the third network device 600.
- the system for implementing data backhaul provided by the embodiment of the present invention is applied to an LTE network.
- LTE network As shown in FIG. 6-b, three types of nodes are specifically defined in the LTE network:
- D-Node which is a macro node with large coverage capability, has its own ability to connect with the core network
- the M-Node is capable of implementing wireless communication with the D-Node on at least one carrier, and is capable of implementing wireless communication with the neighboring M-Node on at least one carrier;
- the MG-Node is a functional combination node of the M-Node and the G-Node.
- the G-Node has the capability of directly transmitting back to the core network in addition to the D-Node. Therefore, MG-Node does not It is only possible to implement wireless communication with the D-Node on at least one carrier, and to enable wireless communication with the adjacent M-Node on at least one carrier, and also has the capability of directly transmitting back to the core network in addition to the D-Node.
- the coverage network of the D-Node includes at least one M-Node and at least one M-G-Node.
- the first network device 200 provided in the embodiment of the present invention is the foregoing D-Node
- the second network device 400 is the foregoing M-Node
- the third network device 600 is the foregoing M-G-Node.
- the D-Node may be a base station
- the M-Node and the M-G-Node may be a base station, or may be a UE capable of providing access to other terminal devices or a UE having a certain backhaul capability.
- the network covered by the first network device 200 includes a second network device 400 and a third network device 600, where The third network device, although specifically connected to the core network, can return data according to its own backhaul capability, but the second network device 400 and the third network device 600 are still allocated by the first network device 200 for centralized backhaul resources.
- the corresponding backhaul resource is allocated so that the second network device 400 can perform data back transmission according to the allocated backhaul resource, and the third network device 600 performs data back using its own backhaul capability under the centralized control of the first network device 200. pass.
- the first network device 200 centrally controls the second network device 400 and the third network device to perform data backhaul, mainly by sending back control information to the second network device 400 and the third network device 600, where the back control information is sent back.
- the first network device 200 is obtained according to the channel state information in the network, the backhaul request of the second network device 400, and the remaining backhaul capability information of the third network device 600, and therefore, before the D-Node sends the backhaul control information.
- the M-Node and/or the MG-Node respectively feed back the above channel state information, the backhaul request, and the remaining backhaul capability information.
- the information state information in the network is specifically provided in three manners.
- the information state information in the network can be obtained by other means, which is not limited herein.
- the first network device 200 broadcasts a reference signal indication message to the second network device 400 and the third network device 600, where the reference signal indication message is used to indicate the second network device 400 and the third network device 600.
- One or more network devices are used to transmit reference signals, while other network devices are used for information state information measurements.
- the foregoing reference signal may specifically include a CSI-RS and/or a CSI-IM or the like. It is assumed that there are second network devices in the network: 2A, 2B, 2C and 2D; third network devices: 3A, 3B, 3C and 3D; then one or more of the above second network device and third network device can be understood For the following situations:
- the second network device 400 and the third network device 600 indicate a message according to the received reference signal, and if the reference signal indication message is used to indicate that the reference signal is sent by itself, the second network device 400 or the third network device 600.
- the reference signal is sent on the resource indicated by the reference signal indication message. If the reference signal indication message is used to indicate channel state information measurement, the second network device 400 or the third network device 600 is configured according to the reference signal.
- the indication feedback feedback quantities PMI, CQI, and Rank of the indication message get channel state information. Then, the second network device or the third network device sends the measured channel state information to the first network device 200, where the channel state information includes PMI, CQI, and Rank.
- the first network device 200 is further configured to obtain information state information by using a third-party database.
- the third-party database refers to the channel state information database obtained by other methods such as measurement and feedback. For example, a database of channel state information generated by a mathematical model by known geographical location information, or a database formed by measuring with other devices and storing the measurement results.
- the second network device 400 and the third network device 600 perform according to other reference signal resources, such as CRS or DMRS.
- the information status information is measured, and then the information status information is transmitted to the first network device 200.
- the second network device 400 does not have the capability of connecting to the core network, and when the data backhaul is performed, the first network device 200 is requested to broadcast the backhaul control information to implement the data by sending a backhaul request to the first network device 200. return.
- the third network device may also send a backhaul request to the network device 200 when needed, which is not limited herein.
- the second network device can perform uplink and downlink downlink transmission.
- the backhaul request sent to the first network device may be an uplink backhaul request.
- the backhaul request sent to the first network device may be a downlink backhaul request, where the backhaul request may include one or more of the following:
- Al the total amount of data of the service that needs to be returned
- A5. Source/destination network information of the backhaul service.
- the source/destination network information may include source/destination network type information and source/destination network addresses.
- the network type and network address may be network types and network addresses involved in the field of communication.
- the source network type may be the Internet
- the source network address may be an address of the Internet
- the destination network type may be a telecommunication network
- the destination network address may be A network identifier of the second network device that requests the return request, and the like.
- the source network type may be a telecommunication network
- the source network address may be a network identifier of the second network device that sends the backhaul request
- the destination network type may be the Internet.
- the network address can be an internet address.
- the third network device 600 is further configured to send the remaining backhaul capability information to the first network device 200, so that the first network device 200 can perform centralized control according to the remaining backhaul capability of the third network device 600.
- the remaining backhaul capability information sent by the third network device 600 to the first network device 200 includes one or more of the following contents:
- the margin of the backhaul capability of B1 is the data rate size that the third network device 600 can additionally support; the charging method of B4 may include free, monthly billing or according to the flow rate; the network type of B5 may include The Internet, the core network of the telecommunications carrier, the first network device 200 or other proprietary network, that is to say through the third network device 600, can return data to the Internet, the carrier's core network, other first network devices 200 or other Dedicated network;
- the reliability indicator of the backhaul link of B6 refers to the outage probability of the backhaul path.
- the backhaul control information acquired by the first network device 200 according to the information state information of the network, the backhaul request sent by the second network device 400, and the remaining backhaul capability information sent by the third network device 600 includes a backhaul network.
- the backhaul network topology control information mainly includes at least one backhaul path, where the backhaul path is mainly allocated by the first network device 200 to the second network device 400 that sends the backhaul request, which is used by the second network device 400.
- the physical resource allocation information includes the available physical resources corresponding to each of the backhaul paths. Specifically, the physical resource allocation information includes each hop when the data is returned on each hop connection.
- the corresponding physical resource that is available for connection, the physical resource includes a time domain, a frequency domain, an air domain, a code domain, and the like that can be used for each hop connection.
- the foregoing time domain resource is specifically a set of time slot resources in the system;
- the frequency domain resource is specifically carrier information and smaller granularity frequency domain resource information in the carrier, for example, a PRB set in an LTE system;
- the spatial domain resource may be a pre Certain precoding information in the defined codebook or selection information for a plurality of directional beams;
- the code domain resource may be indication information of one or more of the available orthogonal/quasi-orthogonal code sets.
- the physical resource allocation information may also indicate the recommended MCS information. It should be noted that a plurality of the foregoing connections may be defined between the two second network devices 400, and the physical resources corresponding to the multiple connections may be partially the same.
- the data backhaul is performed by using the corresponding physical resource on the path to which the backhaul control information is allocated; specifically, if the backhaul control information is for
- the uplink backhaul request sent by the second network device is assumed to be: the uplink network back is mainly sent by the second network device to the third network device, and the backhaul path of the backhaul network topology control information is included in the backhaul control information.
- Multi-hop then the second network device returns the data to be returned back to the first hop. The receiving end then returns from the receiving end of the first hop to the receiving end of the second hop until the data is transmitted back to the third network device, where the data can be utilized when returning data on each hop of the return path.
- the third network device completes the backhaul through the backhaul network that it has; similarly, if the backhaul control information is for the downlink backhaul request, the downlink is assumed
- the transmission is mainly performed by the third network device transmitting data to the second network device, and the third network device is configured according to the backhaul control information sent by the first network device to the second network device of the receiving end according to the backhaul path indicated by the backhaul control information.
- the data is passed back to the second network device hop by hop.
- the backhaul data can be split into multiple return path transmissions, which can achieve faster return speed.
- the embodiment of the present invention further provides a method for implementing data backhaul. As shown in FIG. 9-a, a method for implementing data backhaul includes:
- the backhaul control information includes backhaul network topology control information and physical resource allocation information;
- the executor of the step S9102 is the first network device.
- the first network device performs centralized allocation of the backhaul resources to implement centralized control, thereby improving the success rate of data backhaul. Therefore, the backhaul control information mainly includes the backhaul network topology control information and the physical resource allocation information.
- the second network device can perform uplink and downlink downlink transmission. Specifically, when the second network device that sends the backhaul request is used as the uplink device, the backhaul request sent to the first network device may be an uplink backhaul request. When the second network device that sends back the request is the downlink device, the backhaul request sent to the first network device may specifically be a downlink backhaul request.
- S9102 Send the backhaul control information to the second network device and the third network device, so that the second network device and the third network device perform data backhaul according to the backhaul control information.
- the manner in which the first network device implements the centralized allocation of the returning resources is mainly by sending the backhaul control information to the second network device and the third network device, and then the second network device and the third network device are performed according to the backhaul control information. Data back.
- the backhaul control information is sent to the second network device and the third network device by using the first network device, so that the second network device and the third network device can perform data back according to the received backhaul control information. Pass, effectively improve the success rate of data backhaul, and make full use of network resources.
- an embodiment of the present invention further provides a method for implementing data backhaul, which may include: S9201, sending a backhaul request to a first network device, where the backhaul request is used to send the first The network device requests the backhaul control information, where the backhaul control information includes the backhaul network topology control information and the physical resource allocation information;
- the executor of the steps S9202 and S9203 is a second network device.
- the first network device performs centralized allocation of the backhaul resources to implement centralized control, thereby improving the success rate of data backhaul.
- the first network device centrally allocates the backhaul resource mainly by sending back control information to the second network device and the third network device, where the backhaul control information mainly includes the backhaul network topology control information and the physical resource allocation information.
- the second network device can perform uplink and downlink downlink transmission. Specifically, when the second network device that sends the backhaul request is used as the uplink device, the backhaul request sent to the first network device may be an uplink backhaul request. When the second network device that sends back the request is the downlink device, the backhaul request sent to the first network device may specifically be a downlink backhaul request.
- the second network device After receiving the backhaul control information sent by the first network device, the second network device performs data backhaul according to the backhaul control information, thereby effectively performing data backhaul and improving data under centralized control of the first network device.
- the second network device receives the backhaul control information sent by the first network device, where the backhaul control information mainly includes the backhaul network topology control information and the physical resource allocation information, so as to implement data backhaul in the network.
- the backhaul control information mainly includes the backhaul network topology control information and the physical resource allocation information, so as to implement data backhaul in the network.
- Centralized management after that, according to the backhaul control information for data backhaul, effectively use network resources to improve the capacity of the entire backhaul network.
- an embodiment of the present invention further provides a method for implementing data backhaul, which may include:
- S9301 Send remaining backhaul capability information to the first network device, where the remaining backhaul capability information For reporting the remaining backhaul capability of the first network device, where the backhaul control information includes backhaul network topology control information and physical resource allocation information;
- the executor of the S9302 and S9303 is a second network device.
- the first network device performs centralized allocation of the backhaul resources to implement centralized control, thereby improving the success rate of data backhaul.
- the first network device centrally allocates the backhaul resource mainly by sending back control information to the second network device and the third network device, where the backhaul control information mainly includes the backhaul network topology control information and the physical resource allocation information.
- the second network device can perform uplink and downlink downlink transmission. Specifically, when the second network device that sends the backhaul request is used as the uplink device, the backhaul request sent to the first network device may be an uplink backhaul request. When the second network device that sends back the request is the downlink device, the backhaul request sent to the first network device may specifically be a downlink backhaul request.
- S9303 Perform data back according to the backhaul control information.
- the third network device After receiving the backhaul control information sent by the first network device, the third network device performs data back transmission according to the backhaul control information, thereby effectively performing data backhaul and improving data under centralized control of the first network device.
- the third network device receives the backhaul control information sent by the first network device, where the backhaul control information mainly includes the backhaul network topology control information and the physical resource allocation information, so as to implement data backhaul in the network.
- the backhaul control information mainly includes the backhaul network topology control information and the physical resource allocation information, so as to implement data backhaul in the network.
- Centralized management after that, according to the backhaul control information for data backhaul, effectively use network resources to improve the capacity of the entire backhaul network.
- D-Node which is a macro node with large coverage capability, has its own ability to connect with the core network
- the M-Node is capable of implementing wireless communication with the D-Node on at least one carrier, and is capable of implementing wireless communication with the neighboring M-Node on at least one carrier;
- MG-Node (Mesh-Gateway Node) is a functional combination node of an M-Node and a G-Node (Gateway Node), wherein the G-Node has a direct and core network in addition to the D-Node.
- the ability to return. Therefore, the MG-Node can not only implement wireless communication with the D-Node on at least one carrier, but also can implement wireless communication with the adjacent M-Node on at least one carrier, and also has direct connection with the core network except through the D-Node. The ability to return.
- the coverage network of the D-Node includes at least one M-Node and at least one M-G-Node.
- the first network device provided by the foregoing embodiment is the foregoing D-Node
- the second network device is the foregoing M-Node
- the third network device is the foregoing M-G-Node.
- the D-Node may be a base station
- the M-Node and the M-G-Node may be a base station, or may be a UE capable of providing access to other terminal devices or a UE having a certain backhaul capability.
- a method for implementing data backhaul may include:
- the D-Node broadcasts a reference signal indication message to the M-Node and the MG-Node, where the reference signal indication message is used to indicate that one or more of the M-Node and the MG-Node send the reference signal, and the other the M- Node and MG-Node perform channel state information measurement;
- the D-Node sends a reference signal indication message to the M-Node and the MG-Node by using at least one carrier, and is used to indicate that the reference signal is sent by one or more of the foregoing M-Node and the MG-Node on a certain carrier, without using The M-Node and the MG-Node transmitting the reference signal perform channel state information measurement.
- M-Nodes covered by the D-Node in the LTE network are: 2 A, 2B, 2C, and 2D; the MG-Nodes have: 3A, 3B, 3C, and 3D; then one or more of the above M-Nodes and MG-Nodes Specific can be understood as the following:
- the reference signal indication message further indicates on which resources the M-Node and the MG-Node send the reference signal.
- the reference signal may be CSI-RS, CSI-IM, or the like.
- the 51002, the M-Node, and the M-G-Node send the information state information measured according to the reference signal indication message to the D-Node;
- the M-Node and the MG-Node After the M-Node and the MG-Node receive the reference signal indication message broadcast by the D-Node, if the reference signal indication message indicates that the reference signal is sent by itself, the M-Node or the MG-Node will indicate according to the reference signal indication message.
- the resource sends a reference signal; if the reference signal indicates that the message does not send the reference signal by itself, the information state information is obtained according to the reference signal indication message measuring the feedback amount of PMI and CQL Rank supported by the LTE, wherein it can be understood that the measured feedback amount It can also be other types of feedback, which is not limited herein. Therefore, the measured information status information includes PMI, CQL Rank, and the like.
- the foregoing reference signal may specifically include CSI-RS and/or CSI-IM and the like.
- the M-G-Node sends the remaining backhaul capability information to the D-Node.
- the M-G-Node itself has the backhaul capability, and the M-G-Node sends the remaining backhaul capability information to the D-Node, so that the D-Node can refer to the remaining backhaul capability information of the M-G-Node when allocating the backhaul resource.
- the M-Node is not limited to only one carrier when transmitting the remaining backhaul capability information, and may be transmitted from any of a plurality of carriers in the case where there are multiple carriers in the network.
- the remaining backhaul capability information sent by the M-G-Node may include one or more of the following contents:
- the margin of the backhaul capability of B1 is the data rate size that the MG-Node can additionally support;
- the charging method of B4 may include free, monthly billing or according to the flow rate;
- the network type of B5 may include the Internet.
- the core network of the telecom operator, other D-Nodes or other proprietary networks, that is, the data is transmitted back to the Internet, the core network of the telecom operator, and others through the MG-Node. D-Node or other proprietary network;
- the reliability indicator of the backhaul link of B6 refers to the outage probability of the backhaul path.
- the M-Node sends a backhaul request to the D-Node.
- the M-Node can implement wireless communication with the D-Node on at least one carrier, and can implement wireless communication with the adjacent M-Node on at least one carrier, but does not have the backhaul capability itself. Therefore, when the M-Node needs to perform data backhaul, the D-Node is requested to allocate the backhaul resource by sending a backhaul request to the M-Node.
- the M-Node is not limited to only one carrier when transmitting a backhaul request, and can be transmitted from any of a plurality of carriers in the case where there are multiple carriers in the network.
- the backhaul request sent by the M-Node may include one or more of the following contents:
- Al the total amount of data of the service that needs to be returned
- A5. Source/destination network information of the backhaul service.
- the source/destination network information may include source/destination network type information and source/destination network addresses.
- the network type and network address may be network types and network addresses involved in the field of communication.
- the source network type may be the Internet
- the source network address may be an address of the Internet
- the destination network type may be a telecommunication network
- the destination network address may be A network identifier of the second network device that requests the return request, and the like.
- the source network type may be a telecommunication network
- the source network address may be a network identifier of the second network device that sends the backhaul request
- the destination network type may be the Internet.
- the network address can be an internet address.
- the D-Node obtains the backhaul control information according to the channel state information sent by the M-Node and the MG-Node, the backhaul request of the M-Node, and the remaining backhaul capability information of the MG-Node, where the backhaul control information is obtained. Including return network topology control information and physical resource allocation information;
- the D-Node sends back control information to the M-Node and the MG-Node in the coverage network, where the D-Node sends the channel state information according to the M-Node and the MG-Node, and the M-Node backhaul request and The remaining backhaul capability information of the MG-Node, the backhaul control information is obtained, and the backhaul is transmitted. Control information is sent to the M-Node and the MG-Node.
- the D-Node may transmit the backhaul control information through a physical channel such as a downlink PDCCH, a downlink PBCH, or a downlink EPDCCH.
- a physical channel such as a downlink PDCCH, a downlink PBCH, or a downlink EPDCCH.
- the S1007, the M-Node, and the M-G-Node perform data backhaul according to the backhaul control information.
- the M-Node and the MG-Node covered by the D-Node perform data transmission on the network topology and carrier indicated by the backhaul network control information and the physical resource allocation information according to the backhaul control information. receive.
- the backhaul control information includes backhaul network topology control information and physical resource allocation information.
- the backhaul network topology control information mainly includes at least one backhaul path, where the backhaul path is mainly allocated by the D-Node to the M-Node that sends the backhaul request, and the M-Node can be used to perform backhaul data back.
- the physical resource allocation information includes the available physical resources corresponding to each of the return paths. Specifically, the physical resource allocation information includes each hop when the data is returned on each hop connection.
- the corresponding physical resource that is available for connection includes a time domain, a frequency domain, an air domain, a code domain, and the like that can be used for each hop connection.
- the foregoing time domain resource is specifically a set of time slot resources in the system;
- the frequency domain resource is specifically carrier information and smaller granularity frequency domain resource information in the carrier, for example, a PRB set in an LTE system;
- the spatial domain resource may be a pre Certain precoding information in the defined codebook or selection information for a plurality of directional beams;
- the code domain resource may be indication information of one or more of the available orthogonal/quasi-orthogonal code sets.
- the physical resource allocation information may also indicate MCS information recommended for use. It should be noted that multiple connections may be defined between two M-Nodes, and physical resources corresponding to multiple connections may be partially identical.
- the M-Node receives the backhaul control information
- the data backhaul is performed by using the corresponding physical resource on the path to which the backhaul control information is allocated; specifically, if the backhaul control information is for the M-
- the M-Node forwards the data to be sent back to the receiving end of the first hop, and then returns the data from the receiving end of the first hop to the receiving end of the second hop until the data is transmitted back to the MG-Node, where When the data is returned on each hop of the return path, the physical resources allocated in the physical resource allocation information can be utilized.
- the MG-Node completes the backhaul through its own backhaul network; similarly, if the backhaul control information is for the downlink backhaul request, it is assumed that the downlink backhaul is mainly
- the MG-Node sends data to the M-Node, and the MG-Node returns the data hop by hop according to the backhaul control information sent by the D-Node to the receiving end M-Node according to the backhaul path indicated by the backhaul control information. Pass to M-Node.
- the backhaul data can be split into multiple return path transmissions, which can achieve faster return speed.
- steps S1003 and S1004 may be performed before or after step S1001, and may also be performed in cross-step S1001, which is not limited herein.
- steps S1001 and S1002 may be repeatedly performed, so that the M-Node can measure channel state information of the surrounding M-Node or MG-Node and send it to the D-Node; or the MG-Node can measure the surrounding M- The channel state information of the Node or MG-Node is sent to the D-Node.
- steps S1001 and S1002 obtain information state information of the M-Node and the MG-Node in the overlay network for the D-Node.
- D is not required.
- the M-Node and the MG-Node measure information state information according to other reference signal resources, such as CRS or DMRS, and then send the information state information to D-Node.
- a method for implementing data backhaul mainly includes:
- S1011 The M-Node sends a backhaul request to the D-Node.
- the M-Node is capable of wirelessly communicating with the D-Node on at least one carrier and is capable of being adjacent to
- the M-Node implements wireless communication on at least one carrier, but does not have backhaul capability by itself. Therefore, when the M-Node needs to perform data backhaul, the D-Node is requested to allocate the backhaul resource by sending a backhaul request to the M-Node.
- the M-Node is not limited to only one carrier when transmitting a backhaul request, and can be transmitted from any of a plurality of carriers in the case where there are multiple carriers in the network.
- the backhaul request sent by the M-Node may include at least one or more of the following:
- Al the total amount of data of the service that needs to be returned
- A3 the priority level of the return service; A4. The minimum rate that the backhaul service needs to support;
- A5. Source/destination network information of the backhaul service.
- the source/destination network information may include source/destination network type information and source/destination network addresses.
- the network type and network address may be network types and network addresses involved in the field of communication.
- the source network type may be the Internet
- the source network address may be an address of the Internet
- the destination network type may be a telecommunication network
- the destination network address may be A network identifier of the second network device that requests the return request, and the like.
- the source network type may be a telecommunication network
- the source network address may be a network identifier of the second network device that sends the backhaul request
- the destination network type may be the Internet.
- the network address can be an internet address.
- the M-G-Node sends the remaining backhaul capability information to the D-Node.
- the M-G-Node itself has the backhaul capability, and the M-G-Node sends the remaining backhaul capability information to the D-Node, so that the D-Node can refer to the remaining backhaul capability of the M-G-Node when allocating the backhaul resources.
- the M-Node and the MG-Node measure the information state information according to the reference signal resource.
- the M-Node and the MG-Node may be according to the network.
- the reference signal resources such as CRS or DMRS provided in the LTE network, measure information state information in the network.
- the M-Node and the MG-Node send the measured information state information to the D-Node; it is understood that the information state information sent by the M-Node and the MG-Node to the D-Node in the embodiment of the present invention is also mainly Including PMI, CQL Rank and other information.
- the D-Node sends back control information to the M-Node and the M-G-Node, where the backhaul control information includes backhaul network topology control information and physical resource allocation information.
- the D-Node obtains the backhaul control information according to the channel state information sent by the M-Node and the MG-Node, the backhaul request of the M-Node, and the remaining backhaul capability information of the MG-Node, and sends the backhaul control information to the M. -Node and MG-Node.
- the M-Node and the M-G-Node perform data backhaul according to the backhaul control information.
- the M-Node and the M-G-Node perform data transmission or reception on the network topology and the carrier indicated by the backhaul network topology control information and the physical resource allocation information in the backhaul control information.
- the D-Node can also directly obtain information state information in the network, as shown in Figure 10-c.
- a method for implementing data backhaul mainly includes:
- S1021 The M-Node sends a backhaul request to the D-Node.
- the M-Node is capable of wirelessly communicating with the D-Node on at least one carrier and is capable of being adjacent to
- the M-Node implements wireless communication on at least one carrier, but does not have backhaul capability by itself. Therefore, when the M-Node needs to perform data backhaul, the D-Node is requested to allocate the backhaul resource by sending a backhaul request to the M-Node.
- the M-Node is not limited to only one carrier when transmitting a backhaul request, and can be transmitted from multiple carriers when there are multiple carriers in the network.
- the backhaul request sent by the M-Node may include at least one or more of the following contents: Al, a total amount of data of the service that needs to be returned;
- A5. Source/destination network information of the backhaul service.
- the source/destination network information may include source/destination network type information and source/destination network addresses.
- the network type and network address may be network types and network addresses involved in the field of communication.
- the source network type may be the Internet
- the source network address may be an address of the Internet
- the destination network type may be a telecommunication network
- the destination network address may be A network identifier of the second network device that requests the return request, and the like.
- the source network type may be a telecommunication network
- the source network address may be a network identifier of the second network device that sends the backhaul request
- the destination network type may be the Internet.
- the network address can be an internet address.
- S1022 The M-G-Node sends the remaining backhaul capability information to the D-Node.
- the M-G-Node itself has the backhaul capability, and the M-G-Node sends the remaining backhaul capability information to the D-Node, so that the D-Node can refer to the M-G-Node backhaul capability when allocating the backhaul resources.
- the M-Node is not limited to only one carrier when transmitting the remaining backhaul capability information, and may be transmitted from any of a plurality of carriers when there are multiple carriers in the network.
- the remaining backhaul capability information sent by the MG-Node may include one or more of the following contents:
- the margin of the backhaul capability of B1 is the data rate size that the MG-Node can additionally support;
- the charging method of B4 may include free, monthly billing or according to the flow rate;
- the network type of B5 may include the Internet.
- the core network of the telecom operator, other D-Nodes or other proprietary networks that is to say, the data is transmitted back to the Internet, the core network of the telecom operator, other D-Nodes or other proprietary networks through the MG-Node;
- the reliability index of the transmitted link refers to the probability of interruption of the return path.
- the D-Node obtains the information state information from the database of the third-party database.
- the M-Node and the M-G-Node do not need to measure the information state information, and the D-Node can be obtained from the third-party database.
- the third party database refers to the above-mentioned channel state information database obtained by measurement, feedback, and the like. For example, a database of channel state information generated by a mathematical model by known geographical location information, or a database formed by measuring with other devices and saving the measurement results.
- the D-Node sends back control information to the M-Node and the M-G-Node, where the backhaul control information includes backhaul network topology control information and physical resource allocation information.
- the D-Node obtains the backhaul control information according to the channel state information sent by the M-Node and the MG-Node, the backhaul request of the M-Node, and the remaining backhaul capability information of the MG-Node, and sends the backhaul control information to the M. -Node and MG-Node.
- the M-Node and the M-G-Node perform data backhaul according to the backhaul control information.
- the M-Node and the M-G-Node perform data transmission or reception on the network topology and the carrier indicated by the backhaul network topology control information and the physical resource allocation information in the backhaul control information.
- the D-Node provided by the embodiment of the present invention can obtain the channel state information of the M-Node and the MG-Node.
- the method is within the scope of the present invention and is not limited herein.
- an embodiment of the present invention further provides an apparatus for implementing data backhaul, which may include: a memory 1110 and at least one processor 1120 (taking one processor in FIG. 11 as an example).
- the memory 1110 and the processor 1120 may be connected by a bus or other means, wherein FIG. 11 is exemplified by a bus connection.
- the processor 1120 may perform the following steps:
- the control information includes backhaul network topology control information and physical resource allocation information; and the backhaul control information is sent to the second network device and the third network device, so that the second network device and the third network device are configured according to The backhaul control information performs data backhaul.
- the backhaul control information includes the backhaul network topology Controlling the information and the physical resource allocation information; receiving the backhaul control information broadcast by the first network device, where the backhaul control information is a backhaul request sent by the first network device according to the information state information, the second network device, The remaining backhaul capability information is obtained; and data backhaul is performed according to the backhaul control information.
- the processor 1120 may further perform the following steps: broadcasting, by the second network device and the third network device, a reference signal indication message, where the reference signal The number indication message is used to indicate that one or more of the second network device and the third network device are used to transmit the reference signal, and the other network devices are used to measure the information status information.
- the processor 1120 may further perform the following steps: receiving information state information sent by the second network device and the third network device, where the information state information is the second network device and The three network devices are measured according to the reference signal indication message, and the information state information includes a precoding matrix indication PMI, a channel quality indicator CQI, and a Rank.
- the processor 1120 may further perform the following steps: acquiring the information state information by using a third-party database.
- the processor 1120 may further perform the following steps: receiving information state information sent by the second network device and the third network device, where the information state information is the second network device and The three network devices are obtained according to reference signal resources, and the reference signal resources include a common reference signal CRS and a demodulation reference signal DMRS.
- the processor 1120 may further perform the following steps: receiving a backhaul request sent by the second network device, where the backhaul request includes a total amount of data required to be returned, and allowed At least one of a transmission delay, a priority of the backhaul service, a minimum rate that the backhaul service needs to support, and source/destination network information of the backhaul service.
- the processor 1120 may further perform the following steps: receiving remaining backhaul capability information sent by the third network device, where the remaining backhaul capability information includes a margin of backhaul capability, and a backhaul At least one of a delay size, a buffer size, a backhaul charging method, a network type of the returned transmission, and a reliability indicator of the backhaul link.
- the processor 1120 may further perform the following steps: the second network device uses the physical resource allocation information on a backhaul path included in the backhaul network topology control information.
- the indicated physical resource performs data backhaul; and the third network device uses the backhaul capability to perform data backhaul according to the backhaul control information.
- the processor 1120 may further perform the following steps: receiving a reference signal indication message broadcast by the first network device, where the reference signal indication message is used to indicate to send a reference signal or perform information state information measurement. .
- the processor 1120 may further perform the following steps: if the received reference signal indication message indicates that the reference signal is sent by itself, according to the parameter The test signal indication message sends a reference signal;
- the channel state information is obtained according to the indication of the reference signal indication message, the measurement feedback amount precoding matrix indication PMI, the channel quality indicator CQI, and the Rank information, and The information state information measured by the first network device, where the information state information includes feedback quantities PMI, CQI, and Rank.
- the processor 1120 may further perform the following steps: the second network device uses the physical resource allocation information on a backhaul path included in the backhaul network topology control information.
- the indicated physical resource performs data backhaul; and the third network device uses the backhaul capability to perform data backhaul according to the backhaul control information.
- the memory 1110 may be configured to store: backhaul control information, information status information, a backhaul request, and remaining backhaul capability information.
- the memory 1110 is further configured to store: a reference signal indication message.
- the foregoing memory 1110 is further configured to: store back network topology control information and physical resource allocation information.
- the above memory 1110 can also be used to store: reference signal resources.
- the medium can be a read only memory, a magnetic disk or a compact disk or the like.
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Abstract
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Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18186247.5A EP3484207A1 (en) | 2014-02-26 | 2014-02-26 | Network device and data backhaul implementation system and method |
| CN201480000948.5A CN105103617B (zh) | 2014-02-26 | 2014-02-26 | 网络设备和一种实现数据回传的系统及方法 |
| EP14884151.3A EP3101950B1 (en) | 2014-02-26 | 2014-02-26 | Network device and data postback implementation method |
| PCT/CN2014/072558 WO2015127598A1 (zh) | 2014-02-26 | 2014-02-26 | 网络设备和一种实现数据回传的系统及方法 |
| KR1020167026268A KR101926001B1 (ko) | 2014-02-26 | 2014-02-26 | 네트워크 기기와 데이터 백홀 구현 시스템 및 방법 |
| US15/245,599 US10194377B2 (en) | 2014-02-26 | 2016-08-24 | Network device and data backhaul implementation system and method |
Applications Claiming Priority (1)
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| PCT/CN2014/072558 WO2015127598A1 (zh) | 2014-02-26 | 2014-02-26 | 网络设备和一种实现数据回传的系统及方法 |
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| US15/245,599 Continuation US10194377B2 (en) | 2014-02-26 | 2016-08-24 | Network device and data backhaul implementation system and method |
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| WO2015127598A1 true WO2015127598A1 (zh) | 2015-09-03 |
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| US (1) | US10194377B2 (zh) |
| EP (2) | EP3101950B1 (zh) |
| KR (1) | KR101926001B1 (zh) |
| CN (1) | CN105103617B (zh) |
| WO (1) | WO2015127598A1 (zh) |
Cited By (3)
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| CN106982109A (zh) * | 2016-01-16 | 2017-07-25 | 华为技术有限公司 | 一种无线通信的回程传输方法、控制器、基站、网关 |
| CN109076634A (zh) * | 2016-05-31 | 2018-12-21 | 华为技术有限公司 | 资源分配方法和装置 |
| CN112333492A (zh) * | 2020-09-25 | 2021-02-05 | 深圳Tcl新技术有限公司 | 视频回传控制方法、装置、智能大屏设备及存储介质 |
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| EP3101950B1 (en) * | 2014-02-26 | 2018-08-22 | Huawei Technologies Co., Ltd. | Network device and data postback implementation method |
| WO2019185384A1 (en) * | 2018-03-28 | 2019-10-03 | Sony Corporation | Methods, wireless communications networks and infrastructure equipment |
| CN109257281B (zh) * | 2018-08-24 | 2021-03-05 | 无锡北邮感知技术产业研究院有限公司 | 一种回传路径的选择方法及装置 |
| CN111107634B (zh) * | 2018-10-29 | 2022-12-30 | 华为技术有限公司 | 用于无线回传网络的数据传输方法和装置 |
| US20230403752A1 (en) * | 2022-06-13 | 2023-12-14 | Qualcomm Incorporated | Distributed antenna panels for simultaneous communication |
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- 2014-02-26 KR KR1020167026268A patent/KR101926001B1/ko not_active Expired - Fee Related
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| CN112333492B (zh) * | 2020-09-25 | 2024-04-30 | 深圳Tcl新技术有限公司 | 视频回传控制方法、装置、智能大屏设备及存储介质 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3101950A1 (en) | 2016-12-07 |
| CN105103617A (zh) | 2015-11-25 |
| EP3101950B1 (en) | 2018-08-22 |
| EP3484207A1 (en) | 2019-05-15 |
| EP3101950A4 (en) | 2017-02-22 |
| US20160374007A1 (en) | 2016-12-22 |
| CN105103617B (zh) | 2019-04-26 |
| KR20160127065A (ko) | 2016-11-02 |
| US10194377B2 (en) | 2019-01-29 |
| KR101926001B1 (ko) | 2019-02-26 |
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