WO2017054579A1 - 一种进行数据传输的方法及设备 - Google Patents

一种进行数据传输的方法及设备 Download PDF

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Publication number
WO2017054579A1
WO2017054579A1 PCT/CN2016/094698 CN2016094698W WO2017054579A1 WO 2017054579 A1 WO2017054579 A1 WO 2017054579A1 CN 2016094698 W CN2016094698 W CN 2016094698W WO 2017054579 A1 WO2017054579 A1 WO 2017054579A1
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node
nodes
beamforming
determining
cluster head
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English (en)
French (fr)
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谌丽
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0617Diversity 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 for beam forming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and device for performing data transmission.
  • the distributed network can avoid the core network delay of the traditional cellular network, so that the network side delay is minimized, and the end-to-end delay basically depends on the air interface transmission delay between the transceivers.
  • a large number of terminal end nodes (EPs, End Points) are deployed in a distributed manner, and access to the upper layer network as needed through a distributed control service center (DSC, Distributed Service Center) of the local control node.
  • DSC Distributed Service Center
  • the distributed network works in clusters, the DSC can act as a cluster head, and other terminals in the cluster act as end nodes.
  • the communication paths of distributed networks are diversified.
  • the data transmission of the distributed system generally adopts the omnidirectional mode, and even uses the flooding method to transmit to all neighboring terminals.
  • the receiving node adjacent to the transmitting end can receive the signal transmitted by the transmitting end.
  • the transmitting end The transmitted signal may cause interference to the signal that it actually needs to receive, especially the transmission between the transmitting and receiving terminals may cause mutual interference between the transmitted signals.
  • OFDM Orthogonal Frequency Division Multiplex
  • different subcarrier resources are used on different paths.
  • the transmission between different transceivers is not completely synchronized. It is difficult to be completely orthogonal, and there are also interferences between different physical frequency resources. Interference and capacity limitation are distributed The biggest problem with the system.
  • the embodiments of the present invention provide a method and a device for performing data transmission, which are used to solve the problem of distributed network interference and capacity limitation existing in the prior art.
  • the end node of the distributed system determines that data needs to be transferred between other nodes
  • the end node transmits data between the directional beam and other nodes according to the beamforming parameters.
  • the end node of the distributed system determines that data needs to be transmitted with other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes. Since the data is transmitted through the directional beam, the transmission interference between the nodes and the capacity limitation are reduced; and the reliability of transmission between nodes in the distributed network is further improved.
  • the end node before the data is transmitted between the directional beam and the other node according to the beamforming parameter, the end node further includes:
  • the end node receives beamforming parameters from a cluster head node of the distributed system.
  • the end node before the data is transmitted between the directional beam and the other node according to the beamforming parameter, the end node further includes:
  • the end node determines the beamforming parameters based on location with other nodes or channel conditions with other nodes.
  • the end node determines a beamforming parameter according to the locations of the two nodes that perform the transmission, including:
  • the end node determines a DOA (Direction Of Arrival) according to node position information of two nodes that are transmitted;
  • DOA Direction Of Arrival
  • the end node determines parameter information for determining a beamforming vector according to the DOA, and uses the parameter information for determining a beamforming vector as a beamforming parameter.
  • the end node determines the beam according to a channel condition with other nodes.
  • Shape parameters including:
  • the end node determines parameter information for determining a beamforming vector according to the feature value of the signal coherence matrix, and uses parameter information for determining a beamforming vector as a beamforming parameter.
  • the cluster head node of the distributed system determines that data needs to be transmitted between the end nodes of the same cluster
  • the cluster head node transmits data between the directional beam and the end node of the same cluster according to the beamforming parameter.
  • the end node of the distributed system determines that data needs to be transmitted with other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes. Since the data is transmitted through the directional beam, the transmission interference between the nodes and the capacity limitation are reduced; and the reliability of transmission between nodes in the distributed network is further improved.
  • the method further includes: the cluster head node determining the beamforming parameter according to a location of two nodes that perform transmission or a channel condition between two nodes.
  • the cluster head node determines beamforming parameters according to locations of two nodes that perform transmission, including:
  • the cluster head node determines parameter information for determining a beamforming vector according to node location information of two nodes that perform transmission;
  • the cluster head node uses parameter information for determining a beamforming vector as a beamforming parameter.
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beam shaping array direction vector determined according to the DOA is a beam shaping array direction vector determined according to the DOA.
  • the cluster head node determines node location information according to one of the following manners:
  • the cluster head node determines the node location information by using the location information reported by the end node; or
  • the cluster head node determines the node location information by measuring the location of the end node; or
  • the cluster head node determines the node location information according to the location information notified by the high-level node; or
  • the cluster head node determines the node location information according to location information notified by other cluster head nodes.
  • the cluster head node determines the beamforming parameter according to a channel condition between two nodes that perform transmission, including:
  • the cluster head node determines parameter information for determining a beamforming vector according to channel response information of channel conditions of two nodes that are transmitted;
  • the cluster head node uses the parameter information for determining the beamforming vector as a beamforming parameter.
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beamforming vector determined from eigenvalues of the signal coherence matrix.
  • the cluster head node determines channel information according to one of the following manners:
  • the cluster head node determines the node location information according to the channel dissimilarity.
  • the cluster head node determines the beamforming parameter according to the location of the two nodes that are transmitting or the channel condition between the two nodes, the cluster head node further includes:
  • the cluster head node notifies the determined beamforming parameters of the determined end nodes in the same cluster for transmission.
  • the cluster head node notifies the determined end node of the beamforming parameter to the end node for transmission, including:
  • the cluster head node notifies the determined beamforming parameter to the end node of the same cluster for transmission;
  • the cluster head node will determine the beam shape determined The parameter informs the end node.
  • An end node for performing data transmission according to an embodiment of the present invention where the end node is located in a distributed system, including:
  • a first determining module configured to determine that data needs to be transmitted between other nodes
  • the first transmission module is configured to transmit data between the directional beam and other nodes according to the beamforming parameter.
  • the end node of the distributed system determines that data needs to be transmitted with other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes. Since the data is transmitted through the directional beam, the transmission interference between the nodes and the capacity limitation are reduced; and the reliability of transmission between nodes in the distributed network is further improved.
  • the first transmission module is further configured to:
  • a beamforming parameter is received from a cluster head node of the distributed system.
  • the first transmission module is further configured to:
  • the beamforming parameters are determined based on location with other nodes or channel conditions with other nodes.
  • the first transmission module is specifically configured to:
  • the first transmission module is specifically configured to:
  • a second determining module configured to determine that data needs to be transmitted between end nodes of the same cluster
  • a second transmission module configured to transmit data between the directional beam and the end node of the same cluster according to the beamforming parameter.
  • the end node of the distributed system determines that data needs to be transmitted with other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes. Since the data is transmitted through the directional beam, the transmission interference between the nodes and the capacity limitation are reduced; and the reliability of transmission between nodes in the distributed network is further improved.
  • the second transmission module is further configured to: determine the beamforming parameter according to a location of two nodes that perform transmission or a channel condition between two nodes.
  • the second transmission module is specifically configured to:
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beam shaping array direction vector determined according to the DOA is a beam shaping array direction vector determined according to the DOA.
  • the second transmission module is specifically configured to determine node location information according to one of the following manners:
  • Determining the node location information by measuring the location of the end node
  • the cluster head node determines node location information according to location information notified by the upper node;
  • the node location information is determined according to location information notified by other cluster head nodes.
  • the second transmission module is specifically configured to:
  • the parameter information for determining the beamforming vector is used as a beamforming parameter.
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beamforming vector determined from eigenvalues of the signal coherence matrix.
  • the second transmission module is specifically configured to determine channel information according to one of the following manners:
  • the node location information is determined according to the channel dissimilarity.
  • the second transmission module is further configured to:
  • the determined beamforming parameters After determining the beamforming parameters according to the location of the two nodes that are transmitting or the channel conditions between the two nodes, the determined beamforming parameters are notified to the end nodes in the same cluster for transmission.
  • the second transmission module is specifically configured to:
  • the determined beamforming parameter is notified to the end node of the same cluster for transmission;
  • the determined beamforming parameter is notified to the end node.
  • An end node provided by an embodiment of the present invention, where the end node is located in a distributed system, includes:
  • a processor for reading a program in the memory performing the following process:
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the end node of the distributed system determines that data needs to be transmitted with other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes.
  • the cluster head node provided by the embodiment of the present invention is located in a distributed system, and includes:
  • a processor for reading a program in the memory performing the following process:
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the end node of the distributed system determines that data needs to be transmitted with other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes. Since the data is transmitted through the directional beam, the transmission interference between the nodes and the capacity limitation are reduced; and the reliability of transmission between nodes in the distributed network is further improved.
  • FIG. 1 is a schematic structural diagram of a distributed network according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for performing data transmission according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of beamforming transmission according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a second method for performing data transmission according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a first end node according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a first cluster head node according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a second end node according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a second cluster head node according to an embodiment of the present invention.
  • the end node of the distributed system determines that data needs to be transmitted with other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes. Since the data is transmitted through the directional beam, the transmission interference between the nodes is reduced, and the system capacity limitation is solved at the same time; and the reliability of transmission between nodes in the distributed network is further improved.
  • Embodiments of the present invention may apply a network containing a large number of terminals, such as a distributed network.
  • the distributed access network mainly involves two access network nodes: EP and DSC, which are briefly introduced below.
  • EP is an end node with communication function, such as Machine Type Communications (MTC) type access device. It can obtain data transmission service by accessing “cluster” and can be bound to specific physical devices, such as various sensor sensors. Actuator actuators, accelerators, brakes, robotic arms, aircraft, cars, bicycles, safety helmets, smart glasses, smart watches, etc. Depending on the specific physical device being bound, you can select an EP with different communication capabilities.
  • a typical EP is a communication scenario that is oriented for close distances (eg, less than 100 m) and low data rates (eg, less than 1000 bits/s). The embodiments of the present invention are also applicable to long-distance high-rate EP.
  • DSC In terms of business layer and cluster member management, DSC is responsible for participating in the maintenance of member lists, for cluster member authentication, and for maintaining the device types and service requirements associated with EPs.
  • the DSC acts as a control point for the cluster and is also responsible for coordinating communication with other neighboring clusters.
  • clusters in embodiments of the invention are also referred to as groups in other documents.
  • the DSC functional entity of the embodiment of the present invention may be a head node of a distributed system.
  • the specific device may be a mobile terminal, such as a handheld terminal (such as a smart phone), or a base station type device (such as a micro base station) or a server type device or a distributed system.
  • the EP of the embodiment of the present invention may be a mobile terminal, such as a handheld terminal (such as a smart phone), or a wearable device (such as a smart wristband), or a machine type device (such as a sensor).
  • a mobile terminal such as a handheld terminal (such as a smart phone), or a wearable device (such as a smart wristband), or a machine type device (such as a sensor).
  • the cluster head node of the embodiment of the present invention may also be referred to as a control node, a DSC functional entity, a head node of a distributed system, and the like.
  • the first method for performing data transmission in the embodiment of the present invention includes:
  • Step 200 The end node of the distributed system determines that data needs to be transmitted between the other nodes;
  • Step 201 The end node transmits data between the directional beam and other nodes according to the beamforming parameter.
  • EP1 transmits data to EP0
  • EP3 transmits data to DSC1.
  • beamforming transmission the interference between the two transmission channels is greatly reduced, and even these two transmission channels may be resource multiplexed.
  • embodiments of the present invention provide two schemes for determining beamforming parameters: centralized and distributed. The following is introduced separately.
  • Program one centralized.
  • a cluster head node is a centralized node that manages multiple distributed nodes, and may be a cluster head of a cluster, such as a DSC node.
  • the end node receives beamforming parameters from the cluster head node of the distributed system and transmits data between the directional beam and other nodes based on the received beamforming parameters.
  • the manner in which the specific cluster head node determines the beamforming parameters can be divided into two types: the first is to determine the beamforming parameters according to the positions of the two nodes that perform the transmission; the second is based on the relationship between the two nodes.
  • the channel condition determines the beamforming parameters.
  • the beamforming parameters include some or all of the following information:
  • a beamforming vector determined according to the DOA (the beamforming vector herein may also be referred to as a beamforming vector or a beamforming array direction vector).
  • the above location information may be absolute location information of two nodes; or may be relative location information. As long as it can be ensured that the sender determines the information of the receiver, it can be used as the location information of the embodiment of the present invention.
  • the beamforming vector described above may be an array direction vector or a quantized array direction vector.
  • the end node determines the DOA transmitted between the nodes according to the node location information; determines the array direction vector of the shaped beam according to the DOA, according to the array direction vector Transmitting data between other nodes through directional beams.
  • the array direction vector forming the shaped beam when the array direction vector forming the shaped beam is determined according to the DOA, the array direction vector forming the shaped beam may be determined according to the formula 1.
  • EP1 sends data to EP2. After confirming the positions of the two end nodes, the main path (or maximum path) angle of the EP1 to EP2 signals is calculated.
  • the beam can be directly used according to this angle.
  • Shape specifically taking the beam weight vector as the conjugate of the antenna array direction vector, ie (taking a circular array antenna array as an example)
  • the end node determines the array direction vector forming the shaped beam according to the DOA, and transmits data between the directional beam and other nodes according to the array direction vector.
  • the array direction vector forming the shaped beam when the array direction vector forming the shaped beam is determined according to the DOA, the array direction vector forming the shaped beam may be determined according to the formula 1.
  • the end node transmits data between the directional beam and other nodes according to the array direction vector.
  • the beamforming parameters include some or all of the following information:
  • a beamforming vector determined from eigenvalues of the signal coherence matrix.
  • the shaping beam selection criterion of the embodiment of the present invention may include, but is not limited to, one of the following criteria:
  • Maximum power criterion maximum signal to noise ratio criterion, maximum signal to interference ratio criterion.
  • the beamforming parameter comprises a signal coherence matrix, the eigenvalue of the signal coherent matrix determined by the end node according to the signal coherence matrix; determining the beamforming vector for determining the beamforming vector according to the eigenvalue of the signal coherent matrix Parameter information; data is transmitted between the directional beam and other nodes according to the array direction vector.
  • the end node determines parameter information for determining the beamforming vector according to the eigenvalue of the signal coherence matrix; and directional beam and other nodes according to the array direction vector Transfer data between.
  • the end node transmits data between the directional beam and other nodes according to the array direction vector.
  • the beam-emphasis parameters are determined between the end nodes, and beamforming is performed, and the beam-indicating parameters are not determined by the end nodes.
  • the manner in which the specific end node determines the beamforming parameters can be divided into two types: the first is to determine the beamforming parameters according to the positions of the two nodes that perform transmission; the second is based on the channel between the two nodes. Condition, determining the beamforming parameters.
  • the point-to-point communication between the end node EP1 and the end node EP2 will be described as an example.
  • the first method can be adopted.
  • the end node determines the beamforming parameters based on the location with other nodes.
  • the cluster head node determines the DOA according to the node location information of the two nodes that are transmitted;
  • the cluster head node determines parameter information for determining a beamforming vector according to the DOA, and uses the parameter information for determining a beamforming vector as a beamforming parameter.
  • the array direction vector forming the shaped beam when the array direction vector forming the shaped beam is determined according to the DOA, the array direction vector forming the shaped beam may be determined according to the formula 1.
  • the end node determines the location based on the channel condition with other nodes in the same cluster
  • the beamforming parameters are described.
  • the end node determines a signal coherence matrix according to the channel information and the set shaped beam selection criterion
  • the end node determines parameter information for determining a beamforming vector according to the feature value of the signal coherence matrix, and uses the parameter information for determining a beamforming vector as a beamforming parameter.
  • the shaped beam selection criteria include, but are not limited to, one of the following criteria:
  • Maximum power criterion maximum signal to noise ratio criterion, maximum signal to interference ratio criterion.
  • EKB Eigenvalue Based Beamforming
  • the end node obtains the weight vector by decomposing the eigenvalues of the spatial correlation matrix.
  • the implementation is to find the weight vector W (k) so that r is the largest. According to different criteria, r has different calculation methods.
  • R xx is the spatial coherence matrix of the received signal, which is specifically obtained by channel response calculation.
  • r(W (k) ) is the normalized parameter after shaping according to a specific criterion, such as the maximum power criterion; W (k) is the beam weight vector; R xx is the spatial coherence matrix of the received signal, and R I is the interference
  • the matrix is fitted according to the channel conditions of the end nodes that need to be transmitted simultaneously in the channel condition table.
  • EP1 measures the EP2 reference signal, acquires the channel response, constructs the received signal coherence matrix R xx , or measures noise, interference, etc. as needed, and constructs the required noise and interference coherence matrix. Calculate the weight vector W (k) that makes r the largest according to the formula r, or the third formula obtained by the formula or the corresponding other criteria.
  • the second method for performing data transmission in the embodiment of the present invention includes:
  • Step 400 The cluster head node of the distributed system determines that data needs to be transmitted between the end nodes of the same cluster;
  • Step 401 The cluster head node transmits data between the directional beam and the end node of the same cluster according to the beamforming parameter.
  • EP1 transmits data to EP0
  • EP3 transmits data to DSC1.
  • beamforming transmission the interference between the two transmission channels is greatly reduced, and even these two transmission channels may be resource multiplexed.
  • embodiments of the present invention provide two solutions for determining beamforming parameters: centralized and distributed. The following is introduced separately.
  • Program one centralized.
  • a cluster head node is a centralized node that manages multiple distributed nodes, and may be a cluster head of a cluster, such as a DSC node.
  • the manner in which the specific cluster head node determines the beamforming parameters can be divided into two types: the first is to determine the beamforming parameters according to the positions of the two nodes that perform the transmission; the second is based on the relationship between the two nodes.
  • the channel condition determines the beamforming parameters.
  • the parameter information used to determine the beamforming vector includes some or all of the following information:
  • a beam shaping array direction vector determined according to the DOA is a beam shaping array direction vector determined according to the DOA.
  • the above location information may be absolute location information of two nodes; or may be relative location information. As long as it can be ensured that the sender determines the information of the receiver, it can be used as the location information of the embodiment of the present invention.
  • the beamforming vector described above may be an array direction vector or a quantized array direction vector.
  • the cluster head node determines node location information according to one of the following manners:
  • the cluster head node determines the node location information by using the location information reported by the end node; or
  • the cluster head node determines the node location information by measuring the location of the end node; or
  • the cluster head node determines the node location information according to the location information notified by the high-level node; or
  • the cluster head node determines the node location information according to location information notified by other cluster head nodes (this The case applies to the communication between the cluster head node and the end nodes in other clusters or between the two end nodes in different clusters).
  • the node location information may be updated by means of node reporting or controlling node measurement or high-level node notification or interaction between cluster head nodes.
  • the cluster head node may further form and maintain a node location information table according to the location information, determine a specific location and an adjacent relationship of the node, and may include a distance parameter between the nodes.
  • the cluster head node notifies the determined beamforming parameter to the end node in the same cluster for transmission.
  • the cluster head node notifies the determined beamforming parameter of the cluster to the end node of the same cluster for transmission;
  • the cluster head node will determine the beam shape determined The parameter informs the end node.
  • the cluster head node may notify the location information of the node in the cluster and its neighboring nodes, or notify the location information of the node in the cluster that may be in point-to-point communication with the node; or
  • the cluster head node calculates the DOA transmitted between the nodes according to the position information between the nodes and notifies the end node DOA that needs to perform point-to-point transmission (if the two end nodes communicate, the end nodes with different DOA angles are different, for example One is 0 degrees, the other is 180 degrees); or
  • the cluster head node calculates the DOA transmitted between the nodes according to the inter-node position information and calculates a beamforming vector, and notifies the weight vector of the antenna array required for the end node to perform point-to-point transmission.
  • the cluster head node can also notify the end node of the beamforming vector required for transmitting data, the location information of the cluster head node, and the like.
  • EP1 sends data to EP2. After confirming the positions of the two end nodes, the main path (or maximum path) angle of the EP1 to EP2 signals is calculated. The beam can be directly used according to this angle. Shape, specifically taking the beam weight vector as the antenna array direction vector Yoke, formula one.
  • the parameter information used to determine the beamforming vector includes some or all of the following information:
  • a beamforming vector determined from eigenvalues of the signal coherence matrix.
  • the end node may measure channel information of the peer node that may perform point-to-point communication (specifically, may be measured by transmission of the reference node reference symbol, etc.), and report the cluster head node;
  • the cluster head node stores channel information between nodes and forms a channel condition table between nodes in the cluster.
  • the channel reciprocity can be utilized when constructing the intra-cluster node channel condition table.
  • EP1 reports its measured EP2 to EP1.
  • the transmission channel information can be applied to the signal transmission of EP1 to EP2.
  • the control node may also update the channel status table based on the latest channel measurement reported by the end node.
  • the cluster head node determines channel information according to one of the following ways:
  • the cluster head node determines the node location information according to the channel dissimilarity.
  • the shaped beam selection criteria include, but are not limited to, one of the following criteria:
  • Maximum power criterion maximum signal to noise ratio criterion, maximum signal to interference ratio criterion.
  • the cluster head node may need to communicate between the end nodes or other end nodes, according to the data transmission requirements of the end node and the neighboring nodes, according to certain criteria, such as maximum power criterion, maximum signal to noise ratio criterion, maximum letter
  • the interference ratio criterion calculates the shaped beam weight vector and notifies the end node of the beamforming vector parameter information.
  • the beam-emphasis parameters are determined between the end nodes, and beamforming is performed, and the beam-indicating parameters are not determined by the end nodes.
  • the cluster head node Since the distributed is that each end node itself determines the beam-emphasis parameter, the cluster head node does not need to determine the beam-emphasis parameter.
  • the two nodes that are transmitted in the embodiment of the present invention may all be end nodes; one may be a cluster head node, and one end node.
  • both nodes are end nodes, the two end nodes can be in the same cluster or in different clusters.
  • Embodiment 1 A cluster head node controls beamforming of transmission between end nodes according to node location information.
  • Step 1 The cluster head node obtains the location of the end node. Use one or more of the following methods:
  • the end node in the cluster reports the location information after determining the cluster membership relationship, or when the location within the cluster changes; or
  • the cluster head node (such as a cluster head node) measures the position of the end node to obtain the location information or location update of the node within the cluster; or
  • the high-level node (such as a cellular network node controlling the distributed network, such as a base station) notifies the location information of the nodes in the cluster according to node configuration or reconfiguration in the cluster.
  • Step 2 The cluster head node forms and maintains a node location information table in the cluster.
  • the intra-cluster node location information table includes absolute or relative nodes in the cluster, adjacent relationships between nodes, and may also include distance parameters between nodes.
  • Step 3 The nodes in the cluster notify the end node that may perform point-to-point communication to notify the shaped beam related information. Specifically, one of the following methods can be used:
  • the end node is notified to send a signal arrival angle DOA, and the end node calculates the array direction vector of the shaped beam of the transmitted signal, such as the ideal beamforming method using Equation 1.
  • the cluster head node calculates the DOA transmitted between the nodes according to the relative position of the end nodes, calculates the array direction vector forming the shaped beam, and notifies the end node pair of the array direction vector or the quantized array direction vector.
  • Embodiment 2 The cluster head node controls the beamforming of the transmission between the end nodes according to the channel condition
  • Step 1 The end node measures channel information of the peer node that may perform point-to-point communication (specifically, may be measured by transmission of the reference symbol of the peer node, etc.), and reports the cluster head node.
  • Step 2 The cluster head node stores channel information between nodes and forms a channel status table between nodes in the cluster.
  • the channel reciprocity can be utilized when constructing the intra-cluster node channel condition table.
  • the transport channel information of EP2 to EP1 reported by EP1 can be applied to EP1 to Signal transmission of EP2.
  • the cluster head node may also update the channel status table according to the latest channel measurement reported by the end node.
  • Step 3 When the cluster head node may need communication between the end nodes, according to the data transmission requirements of the end node and the neighboring node, the shape is calculated according to certain criteria, such as the maximum power criterion, the maximum signal to noise ratio criterion, and the maximum signal interference ratio criterion.
  • the beam weight vector and inform the end node of the beamforming vector parameter information. Specifically, the end node is notified to the desired signal coherence matrix (according to the shaping beam selection principle, and may also include an interference or noise coherence matrix) or its eigenvalue; or the beam weight vector is notified.
  • Embodiment 3 Beamforming between a cluster head node and a control end node
  • the cluster head node sends a signal to the end node.
  • Step 1 The cluster head node determines location information of the corresponding end node
  • Step 2 The cluster head node calculates the DOA that sends the signal to the end node according to the location information of the end node, and calculates the array direction vector forming the shaped beam, such as the ideal beam forming formula using Equation 1. law.
  • the cluster head node sends a signal to the end node according to the array direction vector.
  • Step 1 The cluster head node measures the channel information of the corresponding end node (such as measuring the end node pilot signal to obtain the channel response).
  • the transmission from the cluster head node to the end node adopts a TDD mode, and the transceiver channel has channel reciprocity;
  • Step 2 The cluster head node measures the shape of the channel according to a certain criterion, such as a maximum power criterion, a maximum signal to noise ratio criterion, and a maximum signal interference ratio criterion.
  • the cluster head node sends a signal to the end node according to the array direction vector.
  • the end node sends a signal to the cluster head node:
  • Step 1 The cluster head node determines location information of the corresponding end node
  • Step 2 The cluster head node notifies the absolute or relative position information of the corresponding end node; or the end node sends the signal desired direction DOA; or the cluster head node calculates the array direction vector of the shaped beam and sends it to the end node;
  • Step 3 If the location information or DOA notified by the cluster head node, the end node calculates the array direction vector of the shaped beam, and performs signal transmission according to the array direction vector; if the cluster head node notifies the array direction vector, the end node directly follows The array direction vector performs signal transmission.
  • Step 1 The cluster head node measures channel information of the corresponding end node (such as measuring the end node pilot signal to obtain a channel response);
  • Step 2 The cluster head node measures, according to the channel condition, calculates the shaped beam weight vector of the end node to the cluster head node according to certain criteria, such as a maximum power criterion, a maximum signal to noise ratio criterion, and a maximum signal interference ratio criterion.
  • certain criteria such as a maximum power criterion, a maximum signal to noise ratio criterion, and a maximum signal interference ratio criterion.
  • Step 3 The cluster head node notifies the end node of the calculated shaped beam related parameters.
  • Step 4 The end node determines an array direction vector transmitted by the end node to the cluster head node according to the notification information of the cluster head node, and performs signal transmission according to the array direction vector.
  • Step 1 The end node measures channel information of the corresponding control channel (for example, measuring a pilot signal of the cluster head node to obtain a channel response).
  • the transmission between the cluster head node and the end node adopts a TDD mode, and the transceiver channel has a channel mutual Easiness
  • Step 2 The end node measures the channel shape according to the channel condition, and calculates the shaped beam weight vector according to a certain criterion, such as a maximum power criterion, a maximum signal to noise ratio criterion, and a maximum signal interference ratio criterion.
  • the end node sends a signal to the cluster head node according to the array direction vector.
  • Embodiment 4 Beamforming between end nodes according to relative positions (end nodes EP1 and EP2)
  • Step 1 Relative or absolute position information of EP1 and EP2;
  • Step 2 EP1 calculates a DOA that sends a signal to EP2 according to the location information, and calculates an array direction vector that forms the shaped beam, such as the ideal beamforming method using Equation 1. EP1 sends a signal to EP2 according to the array direction vector.
  • Embodiment 5 Beamforming between end nodes according to channel conditions
  • Step 1 EP1 measures channel information of EP2 (such as measuring EP2 pilot signal to obtain channel response).
  • the transmission between EP1 and EP2 adopts TDD mode, and the transceiver channel has channel reciprocity;
  • Step 2 EP1 calculates the shaped beam weight vector according to a channel condition and according to certain criteria, such as a maximum power criterion, a maximum signal to noise ratio criterion, and a maximum signal interference ratio criterion. EP1 sends a signal to EP2 according to the array direction vector.
  • certain criteria such as a maximum power criterion, a maximum signal to noise ratio criterion, and a maximum signal interference ratio criterion.
  • EP1 sends a signal to EP2 according to the array direction vector.
  • An embodiment of the present invention provides an end node.
  • the device is a device corresponding to the method for performing data transmission in FIG. 2 according to the embodiment of the present invention. Therefore, the implementation of the device can refer to the implementation of the method, and the method is repeated. I won't go into details here.
  • the first type of end node is located in a distributed system, and includes:
  • a first determining module 500 configured to determine that data needs to be transmitted between other nodes
  • the first transmission module 501 is configured to transmit data between the directional beam and other nodes according to the beamforming parameter.
  • the first transmission module 501 is further configured to:
  • a beamforming parameter is received from a cluster head node of the distributed system.
  • the first transmission module 501 is further configured to:
  • the beamforming parameters are determined based on location with other nodes or channel conditions with other nodes.
  • the first transmission module 501 is specifically configured to:
  • the first transmission module 501 is specifically configured to:
  • a cluster head node is also provided in the embodiment of the present invention. Since the device is a device corresponding to the method for data transmission in FIG. 3 of the embodiment of the present invention, the implementation of the device may refer to the implementation of the method, and the method is repeated. It will not be repeated here.
  • a cluster head node is located in a distributed system, and includes:
  • a second determining module 600 configured to determine that data needs to be transmitted between end nodes of the same cluster
  • the second transmission module 601 is configured to transmit data between the directional beam and the end node of the same cluster according to the beamforming parameter.
  • the second transmission module 601 is further configured to:
  • the beamforming parameters are determined based on the location of two nodes transmitting or the channel conditions between the two nodes.
  • the second transmission module 601 is specifically configured to:
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beam shaping array direction vector determined according to the DOA is a beam shaping array direction vector determined according to the DOA.
  • the second transmission module 601 is specifically configured to determine node location information according to one of the following manners:
  • Determining the node location information by measuring the location of the end node
  • the cluster head node determines the node location information according to the location information notified by the high-level node; or
  • the node location information is determined according to location information notified by other cluster head nodes.
  • the second transmission module 601 is specifically configured to:
  • the parameter information for determining the beamforming vector is used as a beamforming parameter.
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beamforming vector determined from eigenvalues of the signal coherence matrix.
  • the second transmission module 601 is specifically configured to determine channel information according to one of the following manners:
  • the node location information is determined according to the channel dissimilarity.
  • the second transmission module 601 is further configured to:
  • the determined beamforming parameters After determining the beamforming parameters according to the location of the two nodes that are transmitting or the channel conditions between the two nodes, the determined beamforming parameters are notified to the end nodes in the same cluster for transmission.
  • the second transmission module 601 is specifically configured to:
  • the determined beamforming parameter is notified to the end node of the same cluster for transmission;
  • the determined beamforming parameter is notified to the end node.
  • An embodiment of the present invention provides an end node.
  • the device is a device corresponding to the method for performing data transmission in FIG. 2 according to the embodiment of the present invention. Therefore, the implementation of the device can refer to the implementation of the method, and the method is repeated. I won't go into details here.
  • a second end node in the embodiment of the present invention where the end node is located in a distributed system, includes:
  • the processor 701 is configured to read a program in the memory 704 and perform the following process:
  • the transceiver 702 is utilized to transmit data between the nodes through the directional beam.
  • the transceiver 702 is configured to receive and transmit data under the control of the processor 701.
  • processor 701 is further configured to:
  • a beamforming parameter is received from a cluster head node of the distributed system.
  • the processor 701 is further configured to: determine the beamforming parameter according to a location with other nodes or a channel condition with other nodes.
  • the processor 701 is specifically configured to:
  • the processor 701 is specifically configured to:
  • bus architecture (represented by bus 700), which may include any number of interconnected buses and bridges, will include one or more processors represented by processor 701 and memory represented by memory 704. The various circuits are linked together.
  • the bus 700 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein.
  • Bus interface 703 provides an interface between bus 700 and transceiver 702.
  • Transceiver 702 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • the data processed by the processor 701 is transmitted over the wireless medium via the antenna 705. Further, the antenna 705 also receives the data and transmits the data to the processor 701.
  • the processor 701 is responsible for managing the bus 700 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 704 can be used to store data used by the processor 701 in performing operations.
  • the processor 701 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • CPU Central Embedded Device
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • a cluster head node is also provided in the embodiment of the present invention. Since the device is a device corresponding to the method for data transmission in FIG. 3 of the embodiment of the present invention, the implementation of the device may refer to the implementation of the method, and the method is repeated. It will not be repeated here.
  • a second cluster head node in the embodiment of the present invention where the cluster head node is located in a distributed system, includes:
  • the processor 801 is configured to read a program in the memory 804 and perform the following process:
  • the transceiver 802 is used to transmit data between the directional beams and the end nodes of the same cluster.
  • the transceiver 802 is configured to receive and transmit data under the control of the processor 801.
  • the processor 801 is further configured to:
  • the beamforming parameters are determined based on the location of two nodes transmitting or the channel conditions between the two nodes.
  • the processor 801 is specifically configured to:
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beam shaping array direction vector determined according to the DOA is a beam shaping array direction vector determined according to the DOA.
  • the processor 801 is specifically configured to determine node location information according to one of the following manners:
  • Determining the node location information by measuring the location of the end node
  • the cluster head node determines the node location information according to the location information notified by the high-level node; or
  • the node location information is determined according to location information notified by other cluster head nodes.
  • the processor 801 is specifically configured to:
  • the parameter information for determining the beamforming vector is used as a beamforming parameter.
  • the parameter information used to determine a beamforming vector includes some or all of the following information:
  • a beamforming vector determined from eigenvalues of the signal coherence matrix.
  • the processor 801 is specifically configured to determine channel information according to one of the following manners:
  • the node location information is determined according to the channel dissimilarity.
  • the processor 801 is further configured to determine the beamforming parameter after determining the beamforming parameter according to a location of two nodes that are transmitting or a channel condition between two nodes. Notifies the end node in the cluster that is transmitting.
  • the processor 801 is specifically configured to:
  • the determined beamforming parameter is notified to the end node of the same cluster for transmission;
  • the determined beamforming parameter is notified to the end node.
  • bus 800 may include any number of interconnected buses and bridges, and bus 800 will include one or more processors represented by processor 801 and memory represented by memory 804. The various circuits are linked together.
  • the bus 800 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 803 provides an interface between bus 800 and transceiver 802.
  • Transceiver 802 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • the data processed by the processor 801 is transmitted over the wireless medium via the antenna 805. Further, the antenna 805 also receives the data and transmits the data to the processor 801.
  • the processor 801 is responsible for managing the bus 800 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 804 can be used to store data used by the processor 801 when performing operations.
  • the processor 801 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • the end node of the distributed system in the embodiment of the present invention determines that data needs to be transmitted between other nodes; and according to the beamforming parameter, data is transmitted between the directional beam and other nodes. Since the data is transmitted through the directional beam, the transmission interference between the nodes and the capacity limitation are reduced; and the reliability of transmission between nodes in the distributed network is further improved.

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Abstract

一种进行数据传输的方法及设备,用以解决现有技术中存在的分布式网络干扰和容量受限问题。本发明实施例分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰,同时解决系统容量受限的情况;并进一步提高分布式网络下节点间传输的可靠性。

Description

一种进行数据传输的方法及设备
本申请要求在2015年9月30日提交中国专利局、申请号为201510643081.1、发明名称为“一种进行数据传输的方法及设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域,特别涉及一种进行数据传输的方法及设备。
背景技术
在5G系统中,机器类型数量将远超现有终端(据预测,可能达到500亿到1000亿级别),为了提高端到端时延,引入了分布式网络。分布式网络可以避免传统蜂窝网的核心网时延,使得网络侧时延最小化,端到端时延基本上取决于收发端间空口传输时延。
分布式网络中,大量终端末端节点(EP,End Point)采用分布式部署,并通过本地控制节点分布式服务中心(DSC,Distribute Service Center)根据需要接入高层网络。分布式网络以簇为单位进行工作,DSC可以作为簇头,簇内其他终端则作为末端节点。
分布式网络的通信路径多样化。分布式系统的数据传输一般采用全向方式,甚至专门采用泛洪方式向所有邻近终端发送,发送端邻近的接收节点都能接收到发送端传输的信号,对于其他终端或网络节点,该发送端发送的信号可能对其实际需要接收的信号造成干扰,尤其多对收发端间的传输会造成传输信号之间的相互干扰。即使采用正交频分复用(OFDM,Orthogonal Frequency Division Multiplex)传输方式,不同路径上采用不同的子载波资源,但由于分布式的特性,不同收发端对间的传输不是完全同步,子载波间很难做到完全正交,不同物理频率资源间也存在干扰。干扰和容量受限是分布式 系统的最大问题。
综上所述,分布式网络存在干扰和容量受限问题。
发明内容
本发明实施例提供一种进行数据传输的方法及设备,用以解决现有技术中存在的分布式网络干扰和容量受限的问题。
本发明实施例提供的一种进行数据传输的方法,该方法包括:
分布式系统的末端节点确定需要与其他节点之间传输数据;
末端节点根据波束赋形参数,通过定向波束与其他节点之间传输数据。
在本发明实施例提供的技术方案中,分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰和容量受限的情况;进一步提高分布式网络下节点间传输的可靠性。
可选的,所述末端节点根据波束赋形参数,通过定向波束与其他节点之间传输数据之前,还包括:
所述末端节点接收来自所述分布式系统的簇头节点的波束赋形参数。
可选的,所述末端节点根据波束赋形参数,通过定向波束与其他节点之间传输数据之前,还包括:
所述末端节点根据与其他节点的位置或与其他节点之间的信道状况,确定所述波束赋形参数。
可选的,所述末端节点根据进行传输的两个节点的位置,确定波束赋形参数,包括:
所述末端节点根据进行传输的两个节点的节点位置信息,确定波达角(DOA,Direction Of Arrival);
所述末端节点根据所述DOA确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述末端节点根据与其他节点之间的信道状况,确定所述波束 赋形参数,包括:
所述末端节点根据所述信道信息和设定的赋形波束选取准则,确定信号相干矩阵;
所述末端节点根据所述信号相干矩阵,确定所述信号相干矩阵的特征值;
所述末端节点根据所述信号相干矩阵的特征值,确定用于确定波束赋形矢量的参数信息,并将用于确定波束赋形矢量的参数信息作为波束赋形参数。
本发明实施例提供的另一种进行数据传输的方法,该方法包括:
分布式系统的簇头节点确定需要与同簇的末端节点之间传输数据;
所述簇头节点根据波束赋形参数,通过定向波束与同簇的末端节点之间传输数据。
在本发明实施例提供的技术方案中,分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰和容量受限的情况;进一步提高分布式网络下节点间传输的可靠性。
可选的,该方法还包括:所述簇头节点根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数。
可选的,所述簇头节点根据进行传输的两个节点的位置,确定波束赋形参数,包括:
所述簇头节点根据进行传输的两个节点的节点位置信息,确定用于确定波束赋形矢量的参数信息;
所述簇头节点将用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
进行传输的两个节点的节点位置信息;
根据进行传输的两个节点的节点位置信息确定的DOA;
根据所述DOA确定的波束赋形阵列方向矢量。
可选的,所述簇头节点根据下列方式中的一种确定节点位置信息:
簇头节点通过所述末端节点上报的位置信息,确定所述节点位置信息;或
簇头节点通过对末端节点的位置进行测量,确定所述节点位置信息;或
簇头节点根据高层节点通知的位置信息,确定所述节点位置信息;或
簇头节点根据其他簇头节点通知的位置信息,确定所述节点位置信息。
可选的,所述簇头节点根据进行传输的两个节点之间的信道状况,确定所述波束赋形参数,包括:
所述簇头节点根据进行传输的两个节点的信道状况的信道响应信息,确定用于确定波束赋形矢量的参数信息;
簇头节点将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值确定的波束赋形矢量。
可选的,所述簇头节点根据下列方式中的一种确定信道信息:
所述簇头节点通过所述末端节点上报的信道测量结果,确定所述节点位置信息;或
若进行传输的两个节点采用时分方式使用相同的频率资源,则所述簇头节点根据信道互异性,确定所述节点位置信息。
可选的,所述簇头节点根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数之后,还包括:
簇头节点将确定的所述波束赋形参数通知同簇中进行传输的末端节点。
可选的,所述簇头节点将确定的所述波束赋形参数通知进行传输的末端节点,包括:
若进行传输的两个节点中至少有一个为同簇的末端节点,则所述簇头节点将确定的所述波束赋形参数通知同簇的进行传输的末端节点;或
若进行传输的两个节点中一个节点为同簇的末端节点,另一个节点为所述簇头节点,且所述末端节点需要发送数据,则所述簇头节点将确定的所述波束赋形参数通知所述末端节点。
本发明实施例提供的一种进行数据传输的末端节点,所述末端节点位于分布式系统中,包括:
第一确定模块,用于确定需要与其他节点之间传输数据;
第一传输模块,用于根据波束赋形参数,通过定向波束与其他节点之间传输数据。
在本发明实施例提供的技术方案中,分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰和容量受限的情况;进一步提高分布式网络下节点间传输的可靠性。
可选的,所述第一传输模块还用于:
接收来自所述分布式系统的簇头节点的波束赋形参数。
可选的,所述第一传输模块还用于:
根据与其他节点的位置或与其他节点之间的信道状况,确定所述波束赋形参数。
可选的,所述第一传输模块具体用于:
根据进行传输的两个节点的节点位置信息,确定DOA;
根据所述DOA确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述第一传输模块具体用于:
根据所述信道信息和设定的赋形波束选取准则,确定信号相干矩阵;
根据所述信号相干矩阵,确定所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值,确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
本发明实施例提供的一种进行数据传输的簇头节点,所述簇头节点位于 分布式系统中,包括:
第二确定模块,用于确定需要与同簇的末端节点之间传输数据;
第二传输模块,用于根据波束赋形参数,通过定向波束与同簇的末端节点之间传输数据。
在本发明实施例提供的技术方案中,分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰和容量受限的情况;进一步提高分布式网络下节点间传输的可靠性。
可选的,所述第二传输模块还用于:根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数。
可选的,所述第二传输模块具体用于:
根据进行传输的两个节点的节点位置信息,确定用于确定波束赋形矢量的参数信息;将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
进行传输的两个节点的节点位置信息;
根据进行传输的两个节点的节点位置信息确定的DOA;
根据所述DOA确定的波束赋形阵列方向矢量。
可选的,所述第二传输模块具体用于,根据下列方式中的一种确定节点位置信息:
通过所述末端节点上报的位置信息,确定所述节点位置信息;或
通过对末端节点的位置进行测量,确定所述节点位置信息;或
所述簇头节点根据高层节点通知的位置信息,确定节点位置信息;或
根据其他簇头节点通知的位置信息,确定所述节点位置信息。
可选的,所述第二传输模块具体用于:
根据进行传输的两个节点的信道状况的信道响应信息,确定用于确定波束赋形矢量的参数信息;
将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值确定的波束赋形矢量。
可选的,第二传输模块具体用于,根据下列方式中的一种确定信道信息:
通过所述末端节点上报的信道测量结果,确定所述节点位置信息;或
若进行传输的两个节点采用时分方式使用相同的频率资源,则根据信道互异性,确定所述节点位置信息。
可选的,所述第二传输模块还用于:
根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数之后,将确定的波束赋形参数通知同簇中进行传输的末端节点。
可选的,所述第二传输模块具体用于:
若进行传输的两个节点中至少有一个为同簇的末端节点,则将确定的所述波束赋形参数通知同簇的进行传输的末端节点;或
若进行传输的两个节点中一个节点为同簇的末端节点,另一个节点为所述簇头节点,且所述末端节点需要发送数据,则将确定的所述波束赋形参数通知所述末端节点。
本发明实施例提供的一种末端节点,末端节点位于分布式系统中,包括:
处理器,用于读取存储器中的程序,执行下列过程:
确定需要与其他节点之间传输数据;根据波束赋形参数,利用收发机通过定向波束与其他节点之间传输数据;
收发机,用于在处理器的控制下接收和发送数据。
在本发明实施例提供的技术方案中,分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰和容量受 限的情况;进一步提高分布式网络下节点间传输的可靠性。
本发明实施例提供的一种簇头节点,簇头节点位于分布式系统中,包括:
处理器,用于读取存储器中的程序,执行下列过程:
确定需要与同簇的末端节点之间传输数据;根据波束赋形参数,利用收发机通过定向波束与同簇的末端节点之间传输数据;
收发机,用于在处理器的控制下接收和发送数据。
在本发明实施例提供的技术方案中,分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰和容量受限的情况;进一步提高分布式网络下节点间传输的可靠性。
附图说明
图1为本发明实施例分布式网络的结构示意图;
图2为本发明实施例第一种进行数据传输的方法流程示意图;
图3为本发明实施例进行波束赋形传输示意图;
图4为本发明实施例第二种进行数据传输的方法流程示意图;
图5为本发明实施例第一种末端节点的结构示意图;
图6为本发明实施例第一种簇头节点的结构示意图;
图7为本发明实施例第二种末端节点的结构示意图;
图8为本发明实施例第二种簇头节点的结构示意图。
具体实施方式
在本发明实施例提供的技术方案中,分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰,同时解决系统容量受限的情况;并进一步提高分布式网络下节点间传输的可靠性。
本发明实施例可以应用含有大量终端的网络,比如分布式网络。
分布式网络如图1所示,大量终端(即EP)分布式部署,并通过DSC根 据需要接入高层网络。分布式接入网主要涉及两个接入网节点:EP和DSC,下面进行简要介绍。
EP:EP是具有通信功能末端节点,如机器类通信(MTC,Machine Type Communications)类型接入设备,通过接入“簇”获得数据传输服务,能够绑定到特定物理设备,例如各类传感器sensor、执行器actuator、加速器、制动装置、机械臂、飞行器、汽车、自行车、安全头盔、智能眼镜、智能手表等。根据绑定的特定物理设备不同,可以选择具有不同通信功能的EP。一般EP是面向近距离(例如小于100m),低数据速率(例如低于1000bits/s)的通信场景。本发明实施例也同样适用远距离高速率的EP。
DSC:DSC与周围EP构成簇(Cluster),DSC负责对簇进行管理和维护。又可称为簇头。
在业务层和簇成员管理方面,DSC负责参与对成员列表的维护,对簇成员身份验证,参与对EP关联的设备类型和服务要求进行维护。
分布式接入网层面,DSC作为簇的控制点,还负责协调与其他相邻簇Cluster之间的通信。
在实施中,本发明实施例中的簇在其他文献中也会称为组。
本发明实施例的DSC功能实体可以是作为分布式系统的头节点。具体的设备可以是能够移动的终端,比如手持类终端(例如智能手机),或基站类型设备(例如微型基站)或服务器类设备或分布式系统。
本发明实施例的EP可以是能够移动的终端,比如手持类终端(例如智能手机),或可穿戴设备(例如智能手环),或机器类设备(例如传感器)。
本发明实施例的簇头节点也可以称为控制节点、DSC功能实体、分布式系统的头节点等。
如图2所示,本发明实施例第一种进行数据传输的方法包括:
步骤200、分布式系统的末端节点确定需要与其他节点之间传输数据;
步骤201、所述末端节点根据波束赋形参数,通过定向波束与其他节点之间传输数据。
以图3为例,通过定向波束传输,EP1向EP0发送数据,EP3向DSC1发送数据。通过波束赋形传输,两条传输通道间干扰大大降低,甚至这两条传输通道可能进行资源复用。
对于波束赋形参数本发明实施例提供了两种确定波束赋形参数的方案:集中式和分布式。下面分别进行介绍。
方案一、集中式。
集中式由簇头节点主导。簇头节点是管理多个分布式节点的集中节点,可以为一个簇的簇头,如DSC节点。
末端节点接收来自所述分布式系统的簇头节点的波束赋形参数,并根据接收到的波束赋形参数,通过定向波束与其他节点之间传输数据。
具体簇头节点确定波束赋形参数的方式可以分为两种:第一种是根据进行传输的两个节点的位置,确定所述波束赋形参数;第二种是根据两个节点之间的信道状况,确定所述波束赋形参数。
上述簇头节点确定波束赋形参数的两种方式的具体过程可以参见图4中的内容,在此不在赘述。
对于第一种,波束赋形参数包括下列信息中的部分或全部:
进行传输的两个节点的节点位置信息;
根据进行传输的两个节点的节点位置信息确定的DOA;
根据所述DOA确定的波束赋形矢量(这里的波束赋形矢量也可以称为波束赋形向量或波束赋形阵列方向矢量)。
上述位置信息可以是两个节点的绝对位置信息;也可以是相对位置信息。只要能保证发送端确定接收端的信息都可以作为本发明实施例的位置信息。
上述波束赋形矢量可以为阵列方向矢量或量化后的阵列方向矢量。
1、如果波束赋形参数包括进行传输的两个节点的节点位置信息,则末端节点根据节点位置信息,确定节点间传输的DOA;根据DOA确定形成赋形波束的阵列方向矢量,根据阵列方向矢量,通过定向波束与其他节点之间传输数据。
可选的,根据DOA确定形成赋形波束的阵列方向矢量时,可以根据公式一确定形成赋形波束的阵列方向矢量。
以理想波束赋形为例说明:EP1向EP2发送数据,确知两个末端节点的位置后,计算出EP1到EP2信号的主径(或最大径)到达角度,可以直接根据这个角度进行波束赋形,具体为取波束加权矢量为天线阵列方向矢量的共轭,即(以圆阵天线阵为例)
Figure PCTCN2016094698-appb-000001
其中,W(k)为波束加权矢量;r为圆阵天线的半径;λ为载波波长;T为表示转置操作,*表示共轭操作;Ka为发送端天线数目;(1)中的1代表主径(或最大径);θ表示欲发送的用户的主径(或最大径)到达角度;a为以e为底的对数指;e为常数。
2、如果波束赋形参数包括DOA,则末端节点根据DOA确定形成赋形波束的阵列方向矢量,根据阵列方向矢量,通过定向波束与其他节点之间传输数据。
可选的,根据DOA确定形成赋形波束的阵列方向矢量时,可以根据公式一确定形成赋形波束的阵列方向矢量。
3、如果波束赋形参数包括波束赋形矢量,则末端节点根据阵列方向矢量,通过定向波束与其他节点之间传输数据。
对于第二种,波束赋形参数包括下列信息中的部分或全部:
根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值确定的波束赋形矢量。
可选的,本发明实施例的赋形波束选取准则可以包括但不限于下列准则中的一种:
最大功率准则、最大信噪比准则、最大信干扰比准则。
1、如果波束赋形参数包括信号相干矩阵,则末端节点根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;根据所述信号相干矩阵的特征值确定用于确定波束赋形矢量的参数信息;根据阵列方向矢量,通过定向波束与其他节点之间传输数据。
2、如果波束赋形参数包括信号相干矩阵的特征值,则末端节点根据所述信号相干矩阵的特征值确定用于确定波束赋形矢量的参数信息;根据阵列方向矢量,通过定向波束与其他节点之间传输数据。
3、如果波束赋形参数包括波束赋形矢量;则末端节点根据阵列方向矢量,通过定向波束与其他节点之间传输数据。
方案二、分布式。
末端节点之间确定波束赋性参数,并进行波束赋形,不通过末端节点确定波束赋性参数。
具体末端节点确定波束赋形参数的方式可以分为两种:第一种是根据进行传输的两个节点的位置,确定所述波束赋形参数;第二种是根据两个节点之间的信道状况,确定所述波束赋形参数。
以末端节点EP1和末端节点EP2之间点到点通信为例进行说明。
可选的,如果EP1、EP2可以确知双方的地理位置从而可以计算出所需的传输信号方向,可以采用第一种方式。
如果EP1、EP2不能准确掌握双方相对位置,则可以采用第二种方式。
下面分别进行介绍。
第一种:所述末端节点根据与其他节点的位置,确定所述波束赋形参数。
可选的,簇头节点根据进行传输的两个节点的节点位置信息,确定DOA;
所述簇头节点根据所述DOA确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,根据DOA确定形成赋形波束的阵列方向矢量时,可以根据公式一确定形成赋形波束的阵列方向矢量。
第二种:所述末端节点根据与同簇的其他节点之间的信道状况,确定所 述波束赋形参数。
可选的,所述末端节点根据所述信道信息和设定的赋形波束选取准则,确定信号相干矩阵;
所述末端节点根据所述信号相干矩阵,确定所述信号相干矩阵的特征值;
所述末端节点根据所述信号相干矩阵的特征值,确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,赋形波束选取准则包括但不限于下列准则中的一种:
最大功率准则、最大信噪比准则、最大信干扰比准则。
具体实现内容以特征向量法(EBB,Eigenvalue Based Beamforming)算法为例说明。
末端节点通过对空间相关矩阵进行特征值的分解来得到权矢量。实现方法就是找到权矢量W(k)使得r最大。根据不同准则r有不同的计算方式。
Figure PCTCN2016094698-appb-000002
其中Rxx为接收信号空间相干矩阵,具体由信道响应计算获取。
Figure PCTCN2016094698-appb-000003
其中,r(W(k))为根据特定准则,如最大功率准则得到的赋形后归一化参数;W(k)为波束加权矢量;Rxx为接收信号空间相干矩阵,RI为干扰矩阵,是根据信道状况表中相邻需要同时进行传输的末端节点信道状况拟合而成。
比如EP1测量EP2参考信号,获取信道响应,构造接收信号相干矩阵Rxx,或根据需要测量噪声、干扰等,构造需要的噪声、干扰相干矩阵。根据公式二、或公式三或与之对应其他准则得到的r公式,计算使得r最大的权矢量W(k)
如图4所示,本发明实施例第二种进行数据传输的方法包括:
步骤400、分布式系统的簇头节点确定需要与同簇的末端节点之间传输数据;
步骤401、所述簇头节点根据波束赋形参数,通过定向波束与同簇的末端节点之间传输数据。
以图3为例,通过定向波束传输,EP1向EP0发送数据,EP3向DSC1发送数据。通过波束赋形传输,两条传输通道间干扰大大降低,甚至这两条传输通道可能进行资源复用。
对于波束赋形参数本发明实施例提供了两种确定波束赋形参数得方案:集中式和分布式。下面分别进行介绍。
方案一、集中式。
集中式由簇头节点主导。簇头节点是管理多个分布式节点的集中节点,可以为一个簇的簇头,如DSC节点。
具体簇头节点确定波束赋形参数的方式可以分为两种:第一种是根据进行传输的两个节点的位置,确定所述波束赋形参数;第二种是根据两个节点之间的信道状况,确定所述波束赋形参数。
对于第一种,用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
进行传输的两个节点的节点位置信息;
根据进行传输的两个节点的节点位置信息确定的DOA;
根据所述DOA确定的波束赋形阵列方向矢量。
上述位置信息可以是两个节点的绝对位置信息;也可以是相对位置信息。只要能保证发送端确定接收端的信息都可以作为本发明实施例的位置信息。
上述波束赋形矢量可以为阵列方向矢量或量化后的阵列方向矢量。
可选的,所述簇头节点根据下列方式中的一种确定节点位置信息:
簇头节点通过所述末端节点上报的位置信息,确定所述节点位置信息;或
簇头节点通过对末端节点的位置进行测量,确定所述节点位置信息;或
簇头节点根据高层节点通知的位置信息,确定所述节点位置信息;或
簇头节点根据其他簇头节点通知的位置信息,确定所述节点位置信息(这 种情况适用于簇头节点与其他簇中的末端节点通信或者在不同簇中的两个末端节点之间的通信)。
在实施中,在节点位置变化时,可通过节点上报或控制节点测量或高层节点通知或簇头节点间交互的方式更新节点位置信息。
在实施中,簇头节点还可以根据位置信息,形成并维护节点位置信息表,确定节点的具体位置和相邻关系,可包含节点间距离参数。
可选的,所述簇头节点将确定的所述波束赋形参数通知同簇中进行传输的末端节点。
若进行传输的两个节点中至少有一个为同簇的末端节点,则所述簇头节点将确定的所述波束赋形参数通知同簇的进行传输的末端节点;
若进行传输的两个节点中一个节点为同簇的末端节点,另一个节点为所述簇头节点,且所述末端节点需要发送数据,则所述簇头节点将确定的所述波束赋形参数通知所述末端节点。
在实施中,簇头节点可以通知簇内节点与其相邻节点的位置信息,或通知簇内节点可能与其进行点到点通信的节点的位置信息;或
簇头节点根据节点间位置信息计算节点间传输的DOA并通知需要进行点到点传输的末端节点DOA(如果是两个末端节点之间进行通信,则DOA角度不同的末端节点是不同的,比如一个如果是0度,则另一个是180度);或
簇头节点根据节点间位置信息计算节点间传输的DOA并计算波束赋形矢量,通知需要进行点到点传输的末端节点对其进行传输所需的天线阵列的权矢量。
如果是末端节点与簇头节点之间通信,簇头节点也可以通知末端节点传输数据所需的波束赋形矢量、簇头节点的位置信息等。
以理想波束赋形为例说明:EP1向EP2发送数据,确知两个末端节点的位置后,计算出EP1到EP2信号的主径(或最大径)到达角度,可以直接根据这个角度进行波束赋形,具体为取波束加权矢量为天线阵列方向矢量的共 轭,即公式一。
对于第二种,用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值确定的波束赋形矢量。
在实施中,末端节点可以测量可能进行点到点通信的对端节点的信道信息(具体可通过对端节点参考符号的传输等进行测量),并上报簇头节点;
相应的,簇头节点存储节点间信道信息并形成簇内节点间信道状况表。
如果点到点传输末端节点对采用时分双工(TDD,Time Division Duplex)方式使用相同的频率资源,构造簇内节点信道状况表时可利用信道互易性,如EP1上报其测量的EP2到EP1的传输信道信息可应用于EP1到EP2的信号传输。控制节点还可以根据末端节点上报的最新信道测量结果更新信道状况表。
基于上述内容,可选的,簇头节点根据下列方式中的一种确定信道信息:
所述簇头节点通过所述末端节点上报的信道测量结果,确定所述节点位置信息;或
若进行传输的两个节点采用时分方式使用相同的频率资源,则所述簇头节点根据信道互异性,确定所述节点位置信息。
可选的,赋形波束选取准则包括但不限于下列准则中的一种:
最大功率准则、最大信噪比准则、最大信干扰比准则。
在实施中,簇头节点在末端节点之间或者与其他末端节点可能需要通信时,根据末端节点及邻近节点的数据传输需求,按照一定准则,如最大功率准则、最大信噪比准则、最大信干扰比准则计算赋形波束加权矢量,并通知末端节点对波束赋形向量参数信息。
具体的实现方式可以参见图3中所述末端节点根据与同簇的其他节点之间的信道状况,确定所述波束赋形参数的方式,在此不在赘述。
方案二、分布式。
末端节点之间确定波束赋性参数,并进行波束赋形,不通过末端节点确定波束赋性参数。
由于分布式是各末端节点自身确定波束赋性参数,所以簇头节点就不需要确定波束赋性参数。
各末端节点自身确定波束赋性参数的具体方案可以参见图2中对于方案二的描述,在此不再赘述。
在实施中,本发明实施例进行传输的两个节点可以都是末端节点;也可以一个是簇头节点,一个是末端节点。
如果两个节点都是末端节点,两个末端节点可以在同一个簇中,也可以在不同簇中。
下面列举几个实例,对本发明的方案进行详细说明。
实施例一:簇头节点根据节点位置信息控制末端节点间传输的波束赋形。
步骤一、簇头节点获取末端节点的位置。采用以下方法的一种或多种:
1、簇内末端节点在确定簇归属关系后,或簇内位置发生变化时,上报位置信息;或
2、簇头节点(比如簇头节点)对末端节点的位置进行测量获取簇内节点位置信息或位置更新;或
3、高层节点(如控制分布式网络的蜂窝网节点,如基站)根据簇内节点配置或重配置,通知簇内节点位置信息。
4、簇头节点间交互:如果簇间末端节点需要进行点到点传输时,可以引入簇头节点间信息交互,以获取相邻簇中末端节点的位置信息。
步骤二、簇头节点形成并维护簇内节点位置信息表。簇内节点位置信息表中包括簇内节点的绝对或相对,节点间相邻关系,也可包含节点间距离参数。
步骤三、簇内节点对可能进行点到点通信的末端节点通知赋形波束相关信息。具体可以采用以下方法的一种:
1、通知末端节点与通信的另一方之间的绝对或相对位置信息,由末端节点根据相对位置信息,计算节点间传输的DOA,并计算形成赋形波束的阵列方向矢量,如采用公式一的理想波束赋形方法。
2、通知末端节点发送信号到达角度DOA,由末端节点计算发送信号的赋形波束的阵列方向矢量,如采用公式一的理想波束赋形方法。
3、簇头节点根据末端节点对相对位置,计算节点间传输的DOA,并计算形成赋形波束的阵列方向矢量,将阵列方向矢量或量化后的阵列方向矢量通知末端节点对。
实施例二:簇头节点根据信道状况控制末端节点间传输的波束赋形
步骤一、末端节点测量可能进行点到点通信的对端节点的信道信息(具体可通过对端节点参考符号的传输等进行测量),并上报簇头节点。
步骤二、簇头节点存储节点间信道信息并形成簇内节点间信道状况表。
如果点到点传输末端节点对采用TDD方式使用相同的频率资源,构造簇内节点信道状况表时可利用信道互易性,如EP1上报其测量的EP2到EP1的传输信道信息可应用于EP1到EP2的信号传输。簇头节点还可以根据末端节点上报的最新信道测量结果更新信道状况表。
步骤三、簇头节点在末端节点之间可能需要通信时,根据末端节点及邻近节点的数据传输需求,按照一定准则,如最大功率准则、最大信噪比准则、最大信干扰比准则计算赋形波束加权矢量,并通知末端节点对波束赋形矢量参数信息。具体为通知末端节点对所需信号相干矩阵(根据赋形波束选取原则,还可能包括干扰或噪声相干矩阵)或其特征值;或通知波束加权矢量。
实施例三:簇头节点与控制末端节点间的波束赋形
簇头节点向末端节点发送信号。
一、基于位置
步骤一、簇头节点确定对应末端节点的位置信息;
步骤二、簇头节点根据末端节点位置信息,计算向末端节点发送信号的DOA,计算形成赋形波束的阵列方向矢量,如采用公式一的理想波束赋形方 法。簇头节点按照该阵列方向矢量向末端节点发送信号。
二、基于信道状况
步骤一、簇头节点测量对应末端节点的信道信息(如测量末端节点导频信号获取信道响应),本实施例中簇头节点到末端节点的传输采用TDD方式,收发信道具有信道互易性;
步骤二、簇头节点根据信道状况测量,按照一定准则,如最大功率准则、最大信噪比准则、最大信干扰比准则计算赋形波束加权矢量。簇头节点按照该阵列方向矢量向末端节点发送信号。
末端节点向簇头节点发送信号:
一、基于位置
步骤一、簇头节点确定对应末端节点的位置信息;
步骤二、簇头节点通知对应末端节点两者的绝对或相对位置信息;或末端节点发送信号期望方向DOA;或簇头节点计算出赋形波束的阵列方向矢量后发送给末端节点;
步骤三、如果簇头节点通知的位置信息或DOA,末端节点计算赋形波束的阵列方向矢量,并按照该阵列方向矢量进行信号传输;如果簇头节点通知的是阵列方向矢量,末端节点直接按照该阵列方向矢量进行信号传输。
二、基于信道状况
方式一:
步骤一、簇头节点测量对应末端节点的信道信息(如测量末端节点导频信号获取信道响应);
步骤二、簇头节点根据信道状况测量,按照一定准则,如最大功率准则、最大信噪比准则、最大信干扰比准则计算末端节点到簇头节点的赋形波束加权矢量。
步骤三、簇头节点将计算得到的赋形波束相关参数通知末端节点。
步骤四、末端节点根据簇头节点的通知信息确定末端节点到簇头节点传输的阵列方向矢量,并按该阵列方向矢量进行信号传输。
方式二:
步骤一、末端节点测量对应控制信道的信道信息(如测量簇头节点的导频信号获取信道响应),本实施例中簇头节点和端节点之间的传输采用TDD方式,收发信道具有信道互易性;
步骤二、末端节点根据信道状况测量,按照一定准则,如最大功率准则、最大信噪比准则、最大信干扰比准则计算赋形波束加权矢量。末端节点按照该阵列方向矢量向簇头节点发送信号。
实施例四:末端节点间根据相对位置进行波束赋形(末端节点EP1和EP2)
以EP1到EP2传输的波束赋形为例。
步骤一、EP1与EP2的相对或绝对位置信息;
步骤二、EP1根据位置信息,计算向EP2发送信号的DOA,计算形成赋形波束的阵列方向矢量,如采用公式一的理想波束赋形方法。EP1按照该阵列方向矢量向EP2发送信号。
实施例五:末端节点间根据信道状况进行波束赋形
步骤一、EP1测量EP2的信道信息(如测量EP2导频信号获取信道响应),本实施例中EP1和EP2之间的传输采用TDD方式,收发信道具有信道互易性;
步骤二、EP1根据信道状况测量,按照一定准则,如最大功率准则、最大信噪比准则、最大信干扰比准则计算赋形波束加权矢量。EP1按照该阵列方向矢量向EP2发送信号。
基于同一发明构思,本发明实施例中还提供了一种末端节点,由于该设备为本发明实施例图2进行数据传输的方法对应的设备,因此该设备的实施可以参见方法的实施,重复之处不再赘述。
如图5所示,本发明实施例第一种末端节点,所述末端节点位于分布式系统中,包括:
第一确定模块500,用于确定需要与其他节点之间传输数据;
第一传输模块501,用于根据波束赋形参数,通过定向波束与其他节点之间传输数据。
可选的,所述第一传输模块501还用于:
接收来自所述分布式系统的簇头节点的波束赋形参数。
可选的,所述第一传输模块501还用于:
根据与其他节点的位置或与其他节点之间的信道状况,确定所述波束赋形参数。
可选的,所述第一传输模块501具体用于:
根据进行传输的两个节点的节点位置信息,确定DOA;
根据所述DOA确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述第一传输模块501具体用于:
根据所述信道信息和设定的赋形波束选取准则,确定信号相干矩阵;
根据所述信号相干矩阵,确定所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值,确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
基于同一发明构思,本发明实施例中还提供了一种簇头节点,由于该设备为本发明实施例图3进行数据传输的方法对应的设备,因此该设备的实施可以参见方法的实施,重复之处不再赘述。
如图6所示,本发明实施例第一种簇头节点,该簇头节点位于分布式系统中,包括:
第二确定模块600,用于确定需要与同簇的末端节点之间传输数据;
第二传输模块601,用于根据波束赋形参数,通过定向波束与同簇的末端节点之间传输数据。
可选的,所述第二传输模块601还用于:
根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数。
可选的,所述第二传输模块601具体用于:
根据进行传输的两个节点的节点位置信息,确定用于确定波束赋形矢量 的参数信息;将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
进行传输的两个节点的节点位置信息;
根据进行传输的两个节点的节点位置信息确定的DOA;
根据所述DOA确定的波束赋形阵列方向矢量。
可选的,所述第二传输模块601具体用于,根据下列方式中的一种确定节点位置信息:
通过所述末端节点上报的位置信息,确定所述节点位置信息;或
通过对末端节点的位置进行测量,确定所述节点位置信息;或
簇头节点根据高层节点通知的位置信息,确定所述节点位置信息;或
根据其他簇头节点通知的位置信息,确定所述节点位置信息。
可选的,所述第二传输模块601具体用于:
根据进行传输的两个节点的信道状况的信道响应信息,确定用于确定波束赋形矢量的参数信息;
将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值确定的波束赋形矢量。
可选的,所述第二传输模块601具体用于,根据下列方式中的一种确定信道信息:
通过所述末端节点上报的信道测量结果,确定所述节点位置信息;或
若进行传输的两个节点采用时分方式使用相同的频率资源,则根据信道互异性,确定所述节点位置信息。
可选的,所述第二传输模块601还用于:
根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数之后,将确定的波束赋形参数通知同簇中进行传输的末端节点。
可选的,所述第二传输模块601具体用于:
若进行传输的两个节点中至少有一个为同簇的末端节点,则将确定的所述波束赋形参数通知同簇的进行传输的末端节点;或
若进行传输的两个节点中一个节点为同簇的末端节点,另一个节点为所述簇头节点,且所述末端节点需要发送数据,则将确定的所述波束赋形参数通知所述末端节点。
基于同一发明构思,本发明实施例中还提供了一种末端节点,由于该设备为本发明实施例图2进行数据传输的方法对应的设备,因此该设备的实施可以参见方法的实施,重复之处不再赘述。
如图7所示,本发明实施例第二种末端节点,所述末端节点位于分布式系统中,包括:
处理器701,用于读取存储器704中的程序,执行下列过程:
确定需要与其他节点之间传输数据;根据波束赋形参数,利用收发机702通过定向波束与其他节点之间传输数据。
收发机702,用于在处理器701的控制下接收和发送数据。
可选的,所述处理器701还用于:
接收来自所述分布式系统的簇头节点的波束赋形参数。
可选的,所述处理器701还用于:根据与其他节点的位置或与其他节点之间的信道状况,确定所述波束赋形参数。
可选的,所述处理器701具体用于:
根据进行传输的两个节点的节点位置信息,确定DOA;
根据所述DOA确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述处理器701具体用于:
根据所述信道信息和设定的赋形波束选取准则,确定信号相干矩阵;
根据所述信号相干矩阵,确定所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值,确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
在图7中,总线架构(用总线700来代表),总线700可以包括任意数量的互联的总线和桥,总线700将包括由处理器701代表的一个或多个处理器和存储器704代表的存储器的各种电路链接在一起。总线700还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口703在总线700和收发机702之间提供接口。收发机702可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。经处理器701处理的数据通过天线705在无线介质上进行传输,进一步,天线705还接收数据并将数据传送给处理器701。
处理器701负责管理总线700和通常的处理,还可以提供各种功能,包括定时,外围接口,电压调节、电源管理以及其他控制功能。而存储器704可以被用于存储处理器701在执行操作时所使用的数据。
可选的,处理器701可以是CPU(中央处埋器)、ASIC(Application Specific Integrated Circuit,专用集成电路)、FPGA(Field-Programmable Gate Array,现场可编程门阵列)或CPLD(Complex Programmable Logic Device,复杂可编程逻辑器件)。
基于同一发明构思,本发明实施例中还提供了一种簇头节点,由于该设备为本发明实施例图3进行数据传输的方法对应的设备,因此该设备的实施可以参见方法的实施,重复之处不再赘述。
如图8所示,本发明实施例第二种簇头节点,所述簇头节点位于分布式系统中,包括:
处理器801,用于读取存储器804中的程序,执行下列过程:
确定需要与同簇的末端节点之间传输数据;根据波束赋形参数,利用收发机802通过定向波束与同簇的末端节点之间传输数据。
收发机802,用于在处理器801的控制下接收和发送数据。
可选的,所述处理器801还用于:
根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数。
可选的,所述处理器801具体用于:
根据进行传输的两个节点的节点位置信息,确定用于确定波束赋形矢量的参数信息;将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
进行传输的两个节点的节点位置信息;
根据进行传输的两个节点的节点位置信息确定的DOA;
根据所述DOA确定的波束赋形阵列方向矢量。
可选的,所述处理器801具体用于,根据下列方式中的一种确定节点位置信息:
通过所述末端节点上报的位置信息,确定所述节点位置信息;或
通过对末端节点的位置进行测量,确定所述节点位置信息;或
簇头节点根据高层节点通知的位置信息,确定所述节点位置信息;或
根据其他簇头节点通知的位置信息,确定所述节点位置信息。
可选的,所述处理器801具体用于:
根据进行传输的两个节点的信道状况的信道响应信息,确定用于确定波束赋形矢量的参数信息;
将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
可选的,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
根据所述信号相干矩阵的特征值确定的波束赋形矢量。
可选的,所述处理器801具体用于,根据下列方式中的一种确定信道信息:
通过所述末端节点上报的信道测量结果,确定所述节点位置信息;或
若进行传输的两个节点采用时分方式使用相同的频率资源,则根据信道互异性,确定所述节点位置信息。
可选的,所述处理器801还用于:根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数之后,将确定的所述波束赋形参数通知同簇中进行传输的末端节点。
可选的,所述处理器801具体用于:
若进行传输的两个节点中至少有一个为同簇的末端节点,则将确定的所述波束赋形参数通知同簇的进行传输的末端节点;或
若进行传输的两个节点中一个节点为同簇的末端节点,另一个节点为所述簇头节点,且所述末端节点需要发送数据,则将确定的所述波束赋形参数通知所述末端节点。
在图8中,总线架构(用总线800来代表),总线800可以包括任意数量的互联的总线和桥,总线800将包括由处理器801代表的一个或多个处理器和存储器804代表的存储器的各种电路链接在一起。总线800还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口803在总线800和收发机802之间提供接口。收发机802可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。经处理器801处理的数据通过天线805在无线介质上进行传输,进一步,天线805还接收数据并将数据传送给处理器801。
处理器801负责管理总线800和通常的处理,还可以提供各种功能,包括定时,外围接口,电压调节、电源管理以及其他控制功能。而存储器804可以被用于存储处理器801在执行操作时所使用的数据。
可选的,处理器801可以是CPU、ASIC、FPGA或CPLD。
从上述内容可以看出:本发明实施例分布式系统的末端节点确定需要与其他节点之间传输数据;根据波束赋形参数,通过定向波束与其他节点之间传输数据。由于通过定向波束传输数据,从而降低节点间传输干扰和容量受限的情况;进一步提高分布式网络下节点间传输的可靠性。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (32)

  1. 一种进行数据传输的方法,其特征在于,该方法包括:
    分布式系统的末端节点确定需要与其他节点之间传输数据;
    所述末端节点根据波束赋形参数,通过定向波束与其他节点之间传输数据。
  2. 如权利要求1所述的方法,其特征在于,所述末端节点根据波束赋形参数,通过定向波束与其他节点之间传输数据之前,还包括:
    所述末端节点接收来自所述分布式系统的簇头节点的波束赋形参数。
  3. 如权利要求1所述的方法,其特征在于,所述末端节点根据波束赋形参数,通过定向波束与其他节点之间传输数据之前,还包括:
    所述末端节点根据与其他节点的位置或与其他节点之间的信道状况,确定所述波束赋形参数。
  4. 如权利要求3所述的方法,其特征在于,所述末端节点根据进行传输的两个节点的位置,确定波束赋形参数,包括:
    所述末端节点根据进行传输的两个节点的节点位置信息,确定波达角DOA;根据所述DOA确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  5. 如权利要求3所述的方法,其特征在于,所述末端节点根据与其他节点之间的信道状况,确定所述波束赋形参数,包括:
    所述末端节点根据所述信道信息和设定的赋形波束选取准则,确定信号相干矩阵;
    所述末端节点根据所述信号相干矩阵,确定所述信号相干矩阵的特征值;
    所述末端节点根据所述信号相干矩阵的特征值,确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  6. 一种进行数据传输的方法,其特征在于,该方法包括:
    分布式系统的簇头节点确定需要与同簇的末端节点之间传输数据;
    所述簇头节点根据波束赋形参数,通过定向波束与同簇的末端节点之间传输数据。
  7. 如权利要求6所述的方法,其特征在于,该方法还包括:
    所述簇头节点根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数。
  8. 如权利要求7所述的方法,其特征在于,所述簇头节点根据进行传输的两个节点的位置,确定波束赋形参数,包括:
    所述簇头节点根据进行传输的两个节点的节点位置信息,确定用于确定波束赋形矢量的参数信息;
    所述簇头节点将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  9. 如权利要求8所述的方法,其特征在于,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
    进行传输的两个节点的节点位置信息;
    根据进行传输的两个节点的节点位置信息确定的DOA;
    根据所述DOA确定的波束赋形阵列方向矢量。
  10. 如权利要求8所述的方法,其特征在于,所述簇头节点根据下列方式中的一种确定节点位置信息:
    所述簇头节点通过所述末端节点上报的位置信息,确定所述节点位置信息;或
    所述簇头节点通过对末端节点的位置进行测量,确定所述节点位置信息;或
    所述簇头节点根据高层节点通知的位置信息,确定所述节点位置信息;或
    所述簇头节点根据其他簇头节点通知的位置信息,确定所述节点位置信息。
  11. 如权利要求7所述的方法,其特征在于,所述簇头节点根据进行传输的两个节点之间的信道状况,确定所述波束赋形参数,包括:
    所述簇头节点根据进行传输的两个节点的信道状况的信道响应信息,确定用于确定波束赋形矢量的参数信息;
    所述簇头节点将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  12. 如权利要求11所述的方法,其特征在于,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
    根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
    根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
    根据所述信号相干矩阵的特征值确定的波束赋形矢量。
  13. 如权利要求11所述的方法,其特征在于,所述簇头节点根据下列方式中的一种确定信道信息:
    所述簇头节点通过所述末端节点上报的信道测量结果,确定所述节点位置信息;或
    若进行传输的两个节点采用时分方式使用相同的频率资源,则所述簇头节点根据信道互异性,确定所述节点位置信息。
  14. 如权利要求7~13任一所述的方法,其特征在于,所述簇头节点根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数之后,还包括:
    所述簇头节点将确定的所述波束赋形参数通知同簇中进行传输的末端节点。
  15. 如权利要求14所述的方法,其特征在于,所述簇头节点将确定的所述波束赋形参数通知进行传输的末端节点,包括:
    若进行传输的两个节点中至少有一个为同簇的末端节点,则所述簇头节点将确定的所述波束赋形参数通知同簇的进行传输的末端节点;或
    若进行传输的两个节点中一个节点为同簇的末端节点,另一个节点为所 述簇头节点,且所述末端节点需要发送数据,则所述簇头节点将确定的所述波束赋形参数通知所述末端节点。
  16. 一种进行数据传输的末端节点,其特征在于,所述末端节点位于分布式系统中,包括:
    第一确定模块,用于确定需要与其他节点之间传输数据;
    第一传输模块,用于根据波束赋形参数,通过定向波束与其他节点之间传输数据。
  17. 如权利要求16所述的末端节点,其特征在于,所述第一传输模块还用于:
    接收来自所述分布式系统的簇头节点的波束赋形参数。
  18. 如权利要求16所述的末端节点,其特征在于,所述第一传输模块还用于:
    根据与其他节点的位置或与其他节点之间的信道状况,确定所述波束赋形参数。
  19. 如权利要求18所述的末端节点,其特征在于,所述第一传输模块具体用于:
    根据进行传输的两个节点的节点位置信息,确定DOA;
    根据所述DOA确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  20. 如权利要求18所述的末端节点,其特征在于,所述第一传输模块具体用于:
    根据所述信道信息和设定的赋形波束选取准则,确定信号相干矩阵;
    根据所述信号相干矩阵,确定所述信号相干矩阵的特征值;
    根据所述信号相干矩阵的特征值,确定用于确定波束赋形矢量的参数信息,并将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  21. 一种进行数据传输的簇头节点,其特征在于,所述簇头节点位于分布式系统中,包括:
    第二确定模块,用于确定需要与同簇的末端节点之间传输数据;
    第二传输模块,用于根据波束赋形参数,通过定向波束与同簇的末端节点之间传输数据。
  22. 如权利要求21所述的簇头节点,其特征在于,所述第二传输模块还用于:
    根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数。
  23. 如权利要求22所述的簇头节点,其特征在于,所述第二传输模块具体用于:
    根据进行传输的两个节点的节点位置信息,确定用于确定波束赋形矢量的参数信息;将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  24. 如权利要求23所述的簇头节点,其特征在于,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
    进行传输的两个节点的节点位置信息;
    根据进行传输的两个节点的节点位置信息确定的DOA;
    根据所述DOA确定的波束赋形阵列方向矢量。
  25. 如权利要求23所述的簇头节点,其特征在于,所述第二传输模块具体用于,根据下列方式中的一种确定节点位置信息:
    通过所述末端节点上报的位置信息,确定所述节点位置信息;或
    通过对末端节点的位置进行测量,确定所述节点位置信息;或
    所述簇头节点根据高层节点通知的位置信息,确定所述节点位置信息;或
    根据其他簇头节点通知的位置信息,确定所述节点位置信息。
  26. 如权利要求22所述的簇头节点,其特征在于,所述第二传输模块具体用于:
    根据进行传输的两个节点的信道状况的信道响应信息,确定用于确定波束赋形矢量的参数信息;
    将所述用于确定波束赋形矢量的参数信息作为波束赋形参数。
  27. 如权利要求26所述的簇头节点,其特征在于,所述用于确定波束赋形矢量的参数信息包括下列信息中的部分或全部:
    根据所述信道信息和设定的赋形波束选取准则确定的信号相干矩阵;
    根据所述信号相干矩阵确定的所述信号相干矩阵的特征值;
    根据所述信号相干矩阵的特征值确定的波束赋形矢量。
  28. 如权利要求27所述的簇头节点,其特征在于,所述第二传输模块具体用于,根据下列方式中的一种确定信道信息:
    通过所述末端节点上报的信道测量结果,确定所述节点位置信息;或
    若进行传输的两个节点采用时分方式使用相同的频率资源,则根据信道互异性,确定所述节点位置信息。
  29. 如权利要求22~28任一所述的簇头节点,其特征在于,所述第二传输模块还用于:
    根据进行传输的两个节点的位置或两个节点之间的信道状况,确定所述波束赋形参数之后,将确定的所述波束赋形参数通知同簇中进行传输的末端节点。
  30. 如权利要求29所述的簇头节点,其特征在于,所述第二传输模块具体用于:
    若进行传输的两个节点中至少有一个为同簇的末端节点,则将确定的所述波束赋形参数通知同簇的进行传输的末端节点;或
    若进行传输的两个节点中一个节点为同簇的末端节点,另一个节点为所述簇头节点,且所述末端节点需要发送数据,则将确定的所述波束赋形参数通知所述末端节点。
  31. 一种末端节点,其特征在于,所述末端节点位于分布式系统中,包括:
    处理器,用于读取存储器中的程序,执行下列过程:
    确定需要与其他节点之间传输数据;根据波束赋形参数,利用收发机通 过定向波束与其他节点之间传输数据;
    收发机,用于在处理器的控制下接收和发送数据。
  32. 一种簇头节点,其特征在于,所述簇头节点位于分布式系统中,包括:
    处理器,用于读取存储器中的程序,执行下列过程:
    确定需要与同簇的末端节点之间传输数据;根据波束赋形参数,利用收发机通过定向波束与同簇的末端节点之间传输数据;
    收发机,用于在处理器的控制下接收和发送数据。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115734190A (zh) * 2022-11-04 2023-03-03 中国运载火箭技术研究院 基于同时同频全双工传输的飞行器自组网分簇构建方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110116579A1 (en) * 2005-11-07 2011-05-19 Joonsuk Kim Method and System for Utilizing Tone Grouping With Givens Rotations to Reduce Overhead Associated With Explicit Feedback Information
CN102185644A (zh) * 2011-06-02 2011-09-14 西安电子科技大学 基于联合波束赋形的空分多址接入方法
CN102710395A (zh) * 2012-06-06 2012-10-03 西安电子科技大学 基于联合波束赋形的协同传输方法
CN102957625A (zh) * 2011-08-18 2013-03-06 中兴通讯股份有限公司 一种实现端到端层次化服务质量的系统和方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO334170B1 (no) * 2011-05-16 2013-12-30 Radionor Comm As Fremgangsmåte og system for langdistanse, adaptivt, mobilt, stråleformende adhoc-kommunikasjonssystem med integrert posisjonering
CN102355290B (zh) * 2011-07-05 2014-05-14 深圳大学 基于智能天线技术的无线多跳网络数据发送、接收方法
CN102832985B (zh) * 2012-08-27 2015-10-14 大唐移动通信设备有限公司 波束赋形传输方法和设备
CN103634036B (zh) * 2012-08-27 2017-10-27 华为技术有限公司 分布式多小区多用户波束成形方法、发射机及相关系统
CN104158572B (zh) * 2014-06-27 2017-10-13 河海大学 一种基于智能天线的绿色分布式天线系统通信方法
CN104168621B (zh) * 2014-09-02 2017-11-03 哈尔滨工业大学 一种基于分布式波束形成的海面无线传感网分簇方法
CN104243006B (zh) * 2014-09-03 2018-05-08 北京智谷技术服务有限公司 无线传输方法及无线传输装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110116579A1 (en) * 2005-11-07 2011-05-19 Joonsuk Kim Method and System for Utilizing Tone Grouping With Givens Rotations to Reduce Overhead Associated With Explicit Feedback Information
CN102185644A (zh) * 2011-06-02 2011-09-14 西安电子科技大学 基于联合波束赋形的空分多址接入方法
CN102957625A (zh) * 2011-08-18 2013-03-06 中兴通讯股份有限公司 一种实现端到端层次化服务质量的系统和方法
CN102710395A (zh) * 2012-06-06 2012-10-03 西安电子科技大学 基于联合波束赋形的协同传输方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115734190A (zh) * 2022-11-04 2023-03-03 中国运载火箭技术研究院 基于同时同频全双工传输的飞行器自组网分簇构建方法

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