WO2012151999A1 - 参数传输方法及装置、参数生成方法及装置 - Google Patents

参数传输方法及装置、参数生成方法及装置 Download PDF

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Publication number
WO2012151999A1
WO2012151999A1 PCT/CN2011/084154 CN2011084154W WO2012151999A1 WO 2012151999 A1 WO2012151999 A1 WO 2012151999A1 CN 2011084154 W CN2011084154 W CN 2011084154W WO 2012151999 A1 WO2012151999 A1 WO 2012151999A1
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WIPO (PCT)
Prior art keywords
specific reference
parameters
node
transmission
parameter
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PCT/CN2011/084154
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English (en)
French (fr)
Inventor
陈艺戬
徐俊
李儒岳
戴博
张峻峰
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中兴通讯股份有限公司
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Priority to US14/418,292 priority Critical patent/US9900873B2/en
Publication of WO2012151999A1 publication Critical patent/WO2012151999A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals
    • 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
    • H04B7/022Site diversity; Macro-diversity
    • H04B7/024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035Resource allocation in a cooperative multipoint environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • H04W28/20Negotiating bandwidth

Definitions

  • the present invention relates to the field of communications, and in particular to a parameter transmission method and apparatus, a parameter generation method and apparatus.
  • MIMO Multiple Point Multiple Access
  • COMP Coordinated Multiple Point Transmission and Reception
  • MIMO Multiple Point Multiple Access
  • CIP Coordinated Multiple Point Transmission and Reception
  • wireless communication if multiple antennas are used at the transmitting end (e B ), spatial multiplexing may be adopted to increase the transmission rate, that is, different data positions are transmitted at different antenna positions on the same time-frequency resource at the transmitting end.
  • MIMO Multiple antennas are also used at the receiving end (user equipment).
  • MIMO has two transmission modes, one is Single User-MIMO (SU-MIMO), which allocates all antenna resources to the same user in the case of a single user.
  • Multi User-MIMO Multi-User MIMO, hereinafter referred to as MU-MIMO
  • SU-MIMO Multi User-MIMO
  • MU-MIMO Multi User-MIMO
  • the service of the users can increase the average throughput in the cell through the MU-MIMO transmission form.
  • SU-MIMO refers to a user terminal occupying a physical resource allocated to the user terminal in a single transmission interval.
  • MU-MIMO refers to a user terminal and at least one other user terminal sharing physical resources allocated to the user terminal in one transmission interval.
  • a user terminal and other user terminals share the same physical resource (including time-frequency resources) by space division multiple access or space division multiplexing.
  • the base stations may have logical or physical connections as needed, and the bottom layer between the base stations is transmitted by using an Internet Protocol (IP), which is logically connected to each other through an X2 interface.
  • IP Internet Protocol
  • This design is mainly used to support the UE. Mobility throughout the network ensures seamless user switching, and the X2 interface is also responsible for load and interference management.
  • Each base station is connected to the System Architecture Evolution (SAE) core network through the S1 interface, that is, the Evolved Packet Core (EPC) network.
  • SAE System Architecture Evolution
  • EPC Evolved Packet Core
  • the series of standards R8/R9/R10 of Long Term Evolution (LTE) defines UE specific reference signals, which are mainly used for transmission modes 7, 8 and 9.
  • the reference signal is only embedded in the resources of the UE to which the High Speed Physical Downlink Shared Channel (PDSCH) is mapped. Using UE-specific reference signals, these reference signals can perform channel estimation of corresponding PDSCH resource blocks to demodulate data.
  • PDSCH High Speed Physical Downlink Shared Channel
  • the UE-specific reference signal is therefore considered to use a separate antenna port and has a dedicated channel response from the eNodeB to the UE.
  • the reference signal carries the UE information, and is only transmitted in the frequency band occupied by the data of the UE. Therefore, the Orthogonal Frequency Division Multiplexing (OFDM) symbol occupied by the control channel does not need to be covered in the time domain.
  • OFDM Orthogonal Frequency Division Multiplexing
  • a typical use of UE-specific reference signals is to transmit data to a particular UE by beamforming. For example, instead of using a separate physical antenna to transmit a cell reference signal (Cell Reference Signal, CRS for short), the eNodeB can use a correlation matrix of physical antenna elements to generate a narrow beam in a specific UE direction.
  • CRS Cell Reference Signal
  • Such a beam has a specific signal response between the eNodeB and the UE, and the beam data needs to be coherently demodulated using a UE-specific reference signal.
  • the channel response carried by the UE-specific reference signal can be intuitively understood as a channel matrix that weights the precoding weights.
  • An important aspect of limiting system throughput performance in cellular networks is inter-cell interference, particularly for cell edge users.
  • the coordinated multi-point transmission COMP can coordinate the scheduling and transmission of different cells, effectively cope with interference from neighboring cells, and significantly enhance the data rate of the cell edge users. In order to achieve coordinated multi-point transmission of COMP, communication between adjacent cells is required. If the neighboring cells are managed by the same eNodeB, coordinated multipoint transmission does not require standardized signaling.
  • a primary object of the present invention is to provide a parameter transmission method and apparatus, a parameter generation method and apparatus, to at least solve the above problems.
  • a parameter transmission method including: a transmission node determining a first set of parameters used by the transmission node to generate a UE-specific reference signal; the transmission node transmitting the first group of parameters to One or more transport nodes adjacent to the transport node.
  • the first set of parameters includes at least one of the following: an antenna port number, a scrambling code identity identifier, a total layer number, a cell identity identifier, a maximum downlink bandwidth, a downlink downlink physical channel shared channel, a frequency of the PDSCH, and a transmission The slot number in the radio frame of the UE specific reference signals.
  • the transmitting node transmits the first parameter to one or more transmitting nodes adjacent to the transmitting node through the X2 interface.
  • the transmitting node sends the first set of parameters to one or more transport nodes adjacent to the transport node through an information element IE item set on the LOAD INFORMATION message of the X2 interface.
  • the transmission node comprises one of the following: a base station (eN 0 deB), a macro cell, a relay station, a pico cell, a femtocell, a home base station, a radio remote terminal (RRH), a radio remote unit (RRU), distributed antenna unit.
  • a parameter generating method comprising: a transmitting node receiving one or more transmitting nodes transmitted by one or more transmitting nodes adjacent to the transmitting node for generating a user-specific reference signal a first set of parameters of the UE specific reference signals; the transmitting node selects, according to the first set of parameters, a second set of parameters for generating UE specific reference signals corresponding to the second transport node; and the transmitting node generates the second transport node by using the second set of parameters Corresponding UE specific reference signals.
  • the value corresponding to at least one of the second set of parameters is different from the value corresponding to the first set of parameters.
  • the first set of parameters and the second set of parameters comprise at least one of the following: The antenna port number, the scrambling code identification identifier, the total number of layers, the cell identity, the maximum downlink bandwidth, the frequency index of the physical downlink shared channel PDSCH of the downlink transmission, and the slot number in the radio frame transmitting the UE specific reference signals.
  • a parameter transmission device is also provided, which is applied to a node, comprising: a determining module, configured to determine a parameter of a transmitting node for generating a UE-specific reference signal; and a sending module, configured to send the parameter to one or more transit nodes adjacent to the transmitting node
  • the transmission node includes one of the following: a base station (eNodeB), a macro cell, a relay station, a pico cell, a femtocell, a home base station, a radio remote head (RRH), a radio remote unit (RRU), Distributed antenna unit.
  • a parameter transmission apparatus which is applied to a transmission node, and includes: a receiving module, configured to receive, by a transmission node in a coordinated multi-point transmission system, one or more adjacent to the transmission node And the one or more transmission nodes sent by the transmission node are configured to generate a first group of parameters of the UE specific reference signals; the selection module is configured to: according to the first group of parameters, select a transmission node corresponding to the location where the selection module is generated a second set of parameters of the UE specific reference signals; a generating module configured to generate UE specific reference signals corresponding to the transmitting node where the generating module is located by using the second set of parameters.
  • the transmitting node determines a first set of parameters used by the transmitting node to generate UE specific reference signals; the transmitting node sends the first set of parameters to one or more transmitting nodes adjacent to the transmitting node, and the cooperation is solved.
  • the UE-specific reference signals generated by different transmission nodes in the set use their own determined parameters have mutual interference problems, thereby achieving the effect of reducing the interference between the UE-specific reference signals of the transmission nodes.
  • FIG. 1 is a schematic diagram of a network architecture of LTE and subsequent evolution standards according to the related art
  • FIG. 2 is a flowchart of a parameter transmission method according to an embodiment of the present invention
  • FIG. 3 is a parameter generation according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing the structure of a parameter transmission apparatus according to an embodiment of the present invention
  • Figure 5 is a block diagram showing the structure of a parameter generation apparatus according to an embodiment of the present invention
  • Figure 6 is a diagram of two eNodeBs according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an interaction message according to an embodiment of the present invention.
  • Step S202 The transmitting node determines a first set of parameters used by the transmitting node to generate UE specific reference signals.
  • Step S204 The transmitting node sends the first set of parameters to one or more adjacent to the transmitting node. Transfer nodes.
  • the transmitting node sends its own parameter for generating the UE specific reference signals to its neighboring transmitting node, so that its neighboring transmitting node learns the parameters used by the transmitting node to generate the UE specific reference signals, thereby avoiding
  • the same parameter is used to generate the same UE specific reference signals, which solves the problem that the UE-specific reference signals generated by different transmission nodes in the cooperation set are mutually interfered by the parameters determined by the self-determined signals, thereby achieving the UE-specific reference signal for reducing the transmission node.
  • the effect of interference is used to generate the same UE specific reference signals.
  • the first set of parameters includes at least one of: an antenna port number, a scrambling code identity identifier, a total layer number, a cell identity identifier, a maximum downlink bandwidth, a frequency index of a downlink downlink physical downlink shared channel (PDSCH), The slot number in the radio frame in which the UE specific reference signals are transmitted.
  • the transmitting node transmits the first set of parameters to one or more of the transmitting nodes adjacent to the transmitting node via the X2 interface.
  • FIG. 7 is a schematic diagram of an interaction message according to an embodiment of the present invention. As shown in FIG. 7, a UE-specific reference signal related message is transmitted between e Bl and e B2 through an X2 interface.
  • the preferred embodiment implements a unified definition of the interface of the transmission node, and improves the efficiency of system transmission.
  • the transmitting node sends the first set of parameters to one or more transit nodes adjacent to the transit node by using an information element (Information Element, referred to as IE) set on the LOAD INFORMATION message of the X2 interface.
  • Information Element referred to as IE
  • the transmission load of the signaling is reduced by the existing signaling transmission parameters.
  • the transmission node includes one of the following: a base station (eNodeB), a macro cell, a relay station, a pico cell, a femtocell, a home base station, a radio remote end (RRH), and a radio remote unit ( RRU), distributed antenna unit.
  • FIG. 3 is a flowchart of a parameter generation method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps S302 to S306. Step S302: The transmitting node in the coordinated multi-point transmission system receives one of the one or more transmitting nodes sent by one or more transmitting nodes adjacent to the transmitting node for generating the first of the UE-specific reference signals.
  • step S304 the transmitting node selects, according to the first group of parameters, a second set of parameters for generating UE specific reference signals corresponding to the second transmitting node;
  • step S306 the transmitting node uses the second group of parameters to generate a second transmitting node corresponding to Through the above steps, the transmitting node receives the parameters of its neighboring transmitting node for generating UE specific reference signals and sends it to its neighboring transmitting node, and then uses this parameter to generate its corresponding UE for generating the UE specific reference.
  • the parameters of the signals so that when the UE specific reference signals of different transmission nodes occupy the same time-frequency resources, the same parameters are used to generate the same UE specific reference signals, or the UE specific reference signals of different transmission nodes can occupy different time-frequency resources. , The problem that the UE-specific reference signals generated by different transmission nodes in the cooperation set using the parameters determined by themselves have mutual interference is solved, thereby achieving the effect of reducing the UE-specific reference signal interference of the transmission node.
  • the parameter includes at least one of the following: an antenna port number, a scrambling code identity identifier, a total layer number, a cell identity identifier, a maximum downlink bandwidth, a frequency index of a downlink downlink physical channel shared channel PDSCH, and a UE specific reference signal.
  • the slot number in the radio frame.
  • the value corresponding to at least one of the second set of parameters is different from the value corresponding to the first set of parameters. In this way, UE specific reference signals generated using the second set of parameters can be made different from UE specific reference signals generated using the first set of parameters, so that two adjacent transmission nodes can be implemented using different UE specific reference signals.
  • a parameter transmission software is provided for performing the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium is further provided, wherein the parameter transmission software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the embodiment of the present invention further provides a parameter transmission device, which can be used to implement the above parameter transmission method and a preferred implementation manner, which have been described, and will not be described again.
  • the module is explained.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the systems and methods described in the following embodiments are preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • 4 is a structural block diagram of a parameter transmission apparatus according to an embodiment of the present invention.
  • the apparatus may be applied to a transmission node. As shown in FIG. 4, the apparatus includes: a determination module 42 and a transmission module 44.
  • the structure is described in detail below. .
  • the determining module 42 is configured to determine a first set of parameters used by the transmitting node for generating the user-specific reference signal UE specific reference signals; the sending module 44 is connected to the determining module 42 and configured to determine the first group determined by the determining module 42
  • the parameters are sent to one or more transport nodes adjacent to the transport node.
  • the transmission node comprises one of the following: a base station (eN 0 deB), a macro cell, a relay station, a pico cell, a femtocell, a home base station, a radio remote terminal (RRH), a radio remote unit (RRU), distributed antenna unit.
  • a parameter generation software is provided for performing the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium is further provided, wherein the parameter generation software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the embodiment of the present invention further provides a parameter generating device, which can be used to implement the above parameter generating method and a preferred implementation manner, which have been described, and will not be described again.
  • the module is explained.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus includes: a receiving module 52, a selecting module 54, and a generating module 56.
  • the foregoing structure is described in detail below:
  • the receiving module 52 And a first set of parameters configured to receive one or more transmission nodes transmitted by one or more transmission nodes adjacent to the transmission node for generating UE-specific reference signals;
  • a selection module 54 connected to the receiving module 52. Set to select, according to the first group of parameters received by the receiving module 52, a second for generating UE specific reference signals corresponding to the transmitting node where the selecting module 54 is located.
  • the group parameter; the generating module 56 is connected to the selecting module 54 and configured to generate the UE specific reference signals corresponding to the transmitting node where the generating module 56 is located using the second set of parameters selected by the selecting module 54.
  • the first embodiment provides a method for information exchange between multiple eNodeBs, and the method includes the following steps S2 to S6: Step S2: In a coordinated multi-point transmission system, a transmitting node sends a bearer-specific reference signal related message to one or more adjacent transmitting nodes, where the UE-specific reference signal related message includes at least one of the following information: antenna port number, interference The code identity ID, the total number of layers, the cell identity ID ⁇ S U , the maximum downlink bandwidth, the frequency index of the downlink transmitted PDSCH, and the slot number in one radio frame.
  • the UE-specific reference signal related message includes the following One way or any combination of the ways: Method 1: Cell identity and most Large downlink bandwidth ⁇ .
  • Mode 2 The slot number in a radio frame.
  • Mode 3 Frequency index and subframe number of the PDSCH.
  • Mode 4 The UE-specific reference signal related message includes the antenna port number port and the scrambling code identity ID. The total number of layers of the node.
  • the transmitting node sends a UE-specific reference signal related message to the adjacent transmitting node through the X2 interface.
  • the transmitting node sets the IE on the LOAD INFORMATION message of the X2 interface.
  • the item (indicator IE of the UE specific RS related parameter) sends a related parameter of the UE specific RS of the present transmitting node to its corresponding adjacent transmitting node (coordinating cell), which is used to indicate the usage of the specific RS of the transmitting node UE, Information such as generated sequence, resource location, port number, and scrambling identity.
  • the transmitting node may send a UE-specific reference signal related message to a neighboring transmitting node through a transmission medium such as an optical fiber, a microwave, or a cable.
  • UE specifi c RS related messages can be exchanged between transport nodes via the X2 interface.
  • Step S4 The receiving transmission node performs scheduling of the UE according to the UE-specific reference signal related message.
  • Step S6 After the transmitting node schedules the UE, downlink coordinated multipoint transmission is performed.
  • the downlink coordinated multi-point transmission in step S6 refers to multiple transmission node cooperative scheduling-cooperative beamforming (CS-CB), dynamic cell handover (DCS) or joint transmission (JT).
  • CS-CB multiple transmission node cooperative scheduling-cooperative beamforming
  • DCS dynamic cell handover
  • JT joint transmission
  • the transmission node may be one of the following: an eNodeB, or a macro cell, or a relay relay or a micro cell pico cell, or a pico cell femtocell, or a home base station Home (e) NodeB or a radio remote end (RRH) ), or a radio remote unit (RRU), or a distributed antenna unit.
  • the transmitting node uniquely corresponds to a set of antenna ports.
  • the transmitting node has a single root or a plurality of root physical antennas.
  • the embodiment determines the content of the UE specific RS related message between the multiple coordinated eNodeBs, and sends the message to the cooperative sending node, which solves the problem that the current UE specific RS is not applicable to the coordinated multi-point transmission.
  • the problem is that the downlink transmission of multi-point cooperation is made possible, providing the throughput and performance of the mobile communication system.
  • the second embodiment of the present invention provides a method for the interaction of the UE-specific reference signal related messages between multiple eNodeBs.
  • the parameters of the message based on the interaction method generate the UE occupation reference signal, and then use the UE-specific The reference signal is used for demodulation of the downlink data.
  • FIG. 6 is a flowchart of a method for interacting messages between two eNodeBs according to an embodiment of the present invention.
  • the method includes the following steps S602 to S610.
  • Step S602 a transmitting node sends a bearer UE-specific reference signal related message to one or more adjacent transmitting nodes.
  • the UE-specific reference signal related message in the step includes at least one of the following information: an antenna port number, a scrambling code identity ID, a total layer number, a cell identity identifier ID ⁇ S U , a maximum downlink bandwidth, and a downlink transmission PDSCH.
  • the UE-specific reference signal related message may be in one of the following manners or any combination thereof: Mode 1: The UE-specific reference signal related message includes a cell identity identifier ⁇ 1 and a maximum downlink bandwidth.
  • the UE-specific reference signal related message includes a slot number in a radio frame.
  • Manner 3 The UE-specific reference signal related message includes a frequency index and a subframe number of the PDSCH.
  • Manner 4 The UE-specific reference signal related message includes an antenna port number port, a scrambling code identity ID, and a total number of layers of the node.
  • the transmitting node is an eNodeB, or a macro cell or a relay station relay, or a micro cell pico cell, or a pico cell femtocell, or a home base station Home (e)NodeB, or a radio frequency remote head RRH, or a radio frequency remote end.
  • the transmitting node sends a UE-specific reference signal related message message to the adjacent transmitting node through the X2 interface. More specifically, the transmitting node transmits the UE specific RS of the transmitting node to its corresponding adjacent transmitting node (coordinating cell) through the IE item (indicating IE of the UE specific RS related parameter) set on the LOAD INFORMATION message of the X2 interface.
  • Related parameters are used to indicate the usage of the UE specific RS of the transmitting node, such as the generated sequence, resource location, port number, and scrambling identity.
  • the transmitting node sends the UE-specific reference signal related message to the adjacent transmitting node through a transmission medium such as an optical fiber, a microwave, or a cable.
  • a transmission medium such as an optical fiber, a microwave, or a cable.
  • UE specific RS related messages can be exchanged between the transmitting nodes through the X2 interface.
  • the transmitting node uniquely corresponds to a set of antenna ports.
  • the transmitting node has a single root or a plurality of root physical antennas. Step S604: The neighboring transmission node receives the UE-specific reference signal related message.
  • Step S606 One or more transmitting nodes in the received transmitting node generate a UE-specific reference signal according to the UE-specific reference signal related message.
  • step S506 may generate a UE-specific reference signal in one of the following manners.
  • Manner 1 The transmitting node may generate a UE-specific reference signal by using different port numbers and other identical parameters in the message.
  • Manner 2 The transmitting node may generate a UE-specific reference signal by using different scrambling code identities and other identical parameters in the message.
  • Manner 3 The transmitting node may generate a UE-specific reference signal by using parameters of different time slots in the message, so that UE-specific reference signals of different transmitting nodes are on different time slots.
  • the transmitting node may generate a UE-specific reference signal by using parameters of different frequency resources in the message, so that UE-specific reference signals of different transmitting nodes are on different frequency resources.
  • Step S608 One or more transmission nodes in the received transmission node send the service data to the scheduled user equipment through the physical downlink data sharing channel PDSCH, and the UE-specific reference signal is embedded in the resource block of the PDSCH mapping and sent to the UE.
  • downlink cooperative multi-point transmission refers to multiple transmission nodes cooperative scheduling-cooperative beamforming (CS-CB), dynamic cell handover (DCS) or joint transmission (JT).
  • CS-CB cooperative scheduling-cooperative beamforming
  • DCS dynamic cell handover
  • JT joint transmission
  • the message content of the interaction between the eNode Bs in the prior art is mainly applicable to the single-cell MIMO transmission, and the lack of support for the multi-point coordinated transmission (COMP) may result in the inability to perform the downlink demodulation operation.
  • the format of the interaction message between the eNodeBs supporting the COMP is given, and an eNodeB can determine the neighboring eNodeB according to the related message of the UE specific RS of the neighboring eNodeB.
  • the UE-specific reference signal is used to further select a suitable UE-specific reference signal parameter, and finally the UE-specific reference signals of different eNodeBs in the coordinated set are orthogonal between each other, thereby avoiding interference between UE-specific reference signals. Therefore, the correctness of the channel prediction is effectively ensured, and the data demodulation problem of the coordinated multi-point transmission COMP is well solved.
  • Preferred Embodiment 3 This embodiment provides a method for interacting UE-specific reference signal related messages between multiple eNodeBs, and the method includes the following steps S702 to S710.
  • Step S702 the one transmitting node eNodeB 1 sends the bearer UE-specific reference signal related message to another adjacent transmitting node eNodeB2 through the X2 interface.
  • the transit node passes The IE item (instruction IE of the UE specific RS related parameter) set on the LOAD INFORMATION message of the X2 interface sends the relevant parameter of the UE specific RS of the present transmitting node to its corresponding adjacent transmitting node (coordinating cell) for indicating The usage of the UE specific RS of the transmitting node, such as the generated sequence, the resource location, the port number, and the scrambling code identity, etc.
  • Step S704 The neighboring transmitting node eN 0 deB2 receives the UE-specific reference signal related message.
  • the generation method of the reference signal sequence is defined as: .
  • UE can set the "SCM value 0.
  • a frequency domain index it is assigned for PDSCH transmission on the PRB PRB, based on the reference frequency domain signal related messages
  • the sequence is mapped to a specific resource element of one subframe.
  • Step S708 The receiving transmission node eNodeB2 transmits the service data to the scheduled user equipment through the physical downlink data sharing channel (PDSCH), and the UE-specific reference signal is embedded in the PDSCH mapping.
  • the resource block is sent to the UE.
  • Step S710 The user terminal performs channel estimation of the corresponding PDSCH resource block by using the UE-specific reference signal, and performs MIMO detection and data demodulation based on the result of the channel estimation.
  • the eNodeB1 generates a UE occupation reference signal by using parameters of the UE-specific reference signal related message, and is used for demodulation of the downlink data of the eNodeB1.
  • the eN 0 deB2 uses the parameters with different antenna ports and the same parameters to generate the UE-specific reference signal. Therefore, since the eNodeB1 uses the port 7 and the eNodeB2 uses the port 8, the UE-dedicated signal generated by the eNodeB1 and the UE-dedicated signal used by the eNodeB2 maintain orthogonality and do not interfere with each other. Finally, the orthogonality of the reference signals of different cells well supports the coordinated multi-point transmission or the distributed multi-antenna system, effectively suppressing the cell interference and improving the edge throughput of the system.
  • the three parameters of the antenna port number, the scrambling code identity identifier and the total layer number can be jointly coded, that is, an index is used to identify the values of the current three parameters.
  • Preferred Embodiment 4 This embodiment provides a method for interacting UE-specific reference signal related messages between multiple eNodeBs, and the method includes the following steps S802 to S810.
  • Step S802 The one transmitting node eNodeB1 sends the bearer UE-specific reference signal related message to another neighboring transmitting node eNodeB2 through the X2 interface, and specifically the UE-specific reference signal related message is placed in the load information message;
  • the UE-specific reference signal related message includes: eNodeB1 cell rcell 3 ⁇ 4 7max, DL
  • the transmitting node transmits the IE item (indicating IE of the UE specific RS related parameter) set on the LOAD INFORMATION message of the X2 interface to its corresponding adjacent transmitting node (cooperating cell)
  • the parameter of the UE specific RS of the transmitting node is used to indicate the usage of the specific RS of the transmitting node, such as the generated sequence, the resource location, the port number, and the scrambling identity.
  • Step S804 The adjacent transmitting node eN 0 deB2 Receiving a UE-specific reference signal related message.
  • the PDSCH is transmitted on ports 7 and 8.
  • the UE needs to set the value of scm to 1, which must be different from the value of 1_8 0 in the reference signal related message. This ensures that the UEs occupying reference signals of different cells have certain orthogonality.
  • the LTE-A standard that is, the manner defined by the R10 standard, implements mapping a part of the reference signal sequence to a specific resource element of one subframe.
  • Step S808 The receiving transmission node eNodeB2 transmitting node transmits the service data to the scheduled through the physical downlink data sharing channel PDSCH And the user-specific reference signal is embedded in the resource block of the PDSCH mapping and sent to the UE.
  • Step S810 The user terminal performs channel estimation of the corresponding PDSCH resource block by using the UE-specific reference signal, and performs MIMO detection based on the result of the channel estimation. And data demodulation. It should be noted that the eNodeB1 generates a UE occupation reference signal by using parameters of the UE-specific reference signal related message. Demodulation of downlink data for eNodeB1.
  • eNodeB2 uses parameters with different n_SCID and other parameters to generate UE-specific reference signals. Therefore, although eNodeBl and eNodeB2 use the same port at the same time. (Port 7 and Port 8), since the eNodeB1 uses the scrambling code identity n_SCID with a value of 0, and the eNodeB2 uses the scrambling code identity n_SCID with a value of 1, the UE-specific signal generated by the eNodeB1 and the UE-specific signal used by the eNodeB2 The orthogonality is maintained and there is no interference between each other.
  • the orthogonality of reference signals of different cells well supports cooperative multi-point transmission or distributed multi-antenna system, effectively suppressing cell interference and improving the edge of the system.
  • the three parameters of the antenna port number, the scrambling code identity identifier and the total layer number can be jointly coded, that is, an index is used to identify the values of the current three parameters.
  • the related information of the UE-specific reference signal is exchanged to the adjacent eNodeB by the eNodeB, and the adjacent eNodeB can determine the eNodeB according to the related message of the UE specific RS of the interaction.
  • the UE-specific reference signal is used to further select a suitable UE-specific reference signal parameter, and finally the UE-specific reference signals of different eNodeBs in the coordinated set are orthogonal or different UE-specific reference signals occupy different identities.
  • the time-frequency resource avoids the interference between the UE-specific reference signals, thereby effectively ensuring the correctness of the channel prediction, and thus well solving the data demodulation problem of the coordinated multi-point transmission COMP. It should be noted that these technical effects are not all of the above embodiments, and some technical effects are obtained by some preferred embodiments.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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Description

参数传输方法及装置、 参数生成方法及装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种参数传输方法及装置、 参数生成方法 及装置。 背景技术 协作多输入多输出 (Multiple Input Multiple Output, 简称为 MIMO) 技术, 又称 为多点协作传输(Coordinated Multiple Point Transmission and Reception,简称为 COMP) 技术是利用多个小区的发射天线协作传输来提高小区边缘处无线链路的容量和传输的 可靠性, 可以有效解决小区边缘干扰问题。 在无线通信中, 如果在发送端 (e B ) 使用了多根天线, 可以采取空间复用的方 式来提高传输速率, 即,在发送端相同的时频资源上的不同天线位置发射不同的数据, 在接收端 (用户设备) 也使用多根天线。 一般来说, MIMO存在两种传输形式, 一种 是单用户 MIMO ( Single User-MIMO, 简称为 SU-MIMO), 其在单用户的情况下将所 有天线的资源都分配给同一用户, 另外一种是多用户 MIMO (Multi User-MIMO, 简 称为 MU-MIMO),其在多用户的情况下将不同天线空间的资源分配给不同用户,在相 同时间和相同载波上通过空间区分来实现对多个用户的服务,通过 MU-MIMO传输形 式可以提高小区内的平均吞吐量。 具体来说, SU-MIMO 是指一个用户终端在一个传输间隔内独自占有分配给该用 户终端的物理资源。 MU-MIMO是指一个用户终端和至少一个其它用户终端在一个传 输间隔内共享分配给该用户终端的物理资源。 一个用户终端和其它用户终端通过空分 多址或者空分复用方式共享同一物理资源 (包括时频资源)。 第三代合作伙伴计划(3rf Generation Partnership Project,简称为 3GPP) R8/R9/R10 以及后续版本的网络采用扁平的网络架构, 如图 1所示, 基站 (e B) 是无线网络的 主体, 整个接入网络完全由基站组成。 其中, 基站之间根据需要可以具有逻辑或者物 理的连接, 基站之间底层采用网络协议 (Internet Protocol, 简称为 IP) 传输, 在逻辑 上通过 X2接口互相连接, 这样的设计, 主要用于支持 UE在整个网络内的移动性, 保 证用户的无缝切换, 另外 X2接口还负责负载和干扰管理。 每个基站通过 S1接口连接 到系统架构演进(System Architecture Evolution, 简称为 SAE)核心网络, 即分组核心 网 (Evolved Packet Core, 简称为 EPC) 网络。 长期演进(Long Term Evolution, 简称为 LTE) 的系列标准 R8/R9/R10定义了 UE 专用参考信号(UE specific reference signals) , 该专用参考信号主要用于传输模式 7、 8 禾口 9, 该专用参考信号只嵌入在物理下行共享信道 (High Speed Physical Downlink Shared Channel, 简称为 PDSCH)映射到的 UE的资源中。 使用 UE专用参考信号, 这 些参考信号可以进行相应 PDSCH资源块的信道估计以解调数据。因此 UE专用参考信 号被视为使用了独立的天线端口, 并具有从 eNodeB到 UE间专门的信道响应。 这种 参考信号携带 UE信息, 只在 UE的数据所占的频段上发送, 因此时域上不需要覆盖 控制信道所占的正交频分复用 (Orthogonal Frequency Division Multiplexing, 简称为 OFDM) 符号。 UE专用参考信号的典型使用是通过波束赋形传输数据到特定的 UE。 例如不通过 使用单独的物理天线传输小区专用参考信号 (Cell Reference Signal, 简称为 CRS), eNodeB可以使用物理天线单元的相关矩阵在特定的 UE方向上产生窄波束。这种波束 在 eNodeB和 UE之间具有特定的信号响应,需要采用 UE专用参考信号对波束数据进 行相干解调。实际上, UE专用参考信号承载的信道响应可以直观理解为加权了预编码 权值的信道矩阵。 限制蜂窝网络中系统吞吐量性能的一个重要方面是小区间干扰, 特别是小区边缘 用户。协作多点传输 COMP可以协调不同小区的调度和传输, 有效地对付来自于相邻 小区的干扰, 显著增强小区边缘用户的数据速率。 为了实现协作多点传输 COMP, 需 要相邻小区之间通信。 如果相邻小区由相同 eNodeB来管理, 协作多点传输不需要标 准化信令。 然而, 在由不同 eNodeB控制的相邻小区中, 标准化信令是很重要的, 特 别是多厂商网络。 相关技术中, 对于 R11 标准中协作多点传输方式, 根据 R10标准的结论, 基于 CSI-RS可以进行下行链路的信道测量, 基于 UE specific RS进行下行传输链路的数据 接收和解调。 但是, 协作集合中不同的 eNodeB采用自身确定的参数生成的 UE专用 参考信号存在相互干扰的问题。 发明内容 本发明的主要目的在于提供一种参数传输方法及装置、 参数生成方法及装置, 以 至少解决上述问题。 根据本发明的一个方面, 提供了一种参数传输方法, 包括: 传输节点确定该传输 节点用于生成用户专用参考信号 UE specific reference signals的第一组参数; 传输节点 将第一组参数发送给与传输节点相邻的一个或多个传输节点。 优选地, 第一组参数包括以下至少之一: 天线端口号、 扰码身份识别标识、 总层 数、 小区身份标识、 最大下行带宽、 下行传输的物理下行共享信道 PDSCH的频率索 弓 I、 传输 UE specific reference signals的无线帧中的时隙号。 优选地, 传输节点通过 X2接口将第一参数发送给与传输节点相邻的一个或多个 传输节点。 优选地, 传输节点通过 X2接口的 LOAD INFORMATION message上设置的信息 元素 IE项, 将第一组参数发送给与传输节点相邻的一个或多个传输节点。 优选地,传输节点包括以下之一: 基站(eN0deB)、宏小区、中继站、微小区(pico cell)、 微微小区(femtocell)、 家庭基站、 射频远端头(RRH)、 射频远端单元(RRU)、 分布式天线单元。 根据本发明的再一方面, 还提供了一种参数生成方法, 包括: 传输节点接收与该 传输节点相邻的一个或多个传输节点发送的一个或多个传输节点用于生成用户专用参 考信号 UE specific reference signals的第一组参数; 传输节点根据第一组参数, 选择用 于生成第二传输节点对应的 UE specific reference signals的第二组参数; 传输节点使用 第二组参数生成第二传输节点对应的 UE specific reference signals„ 优选地, 第二组参数中的至少之一对应的值与第一组参数对应的值不同。 优选地, 第一组参数和第二组参数包括以下至少之一: 天线端口号、 扰码身份识 别标识、总层数、小区身份标识、最大下行带宽、下行传输的物理下行共享信道 PDSCH 的频率索引和传输 UE specific reference signals的无线帧中的时隙号。 根据本发明的另一方面, 还提供了一种参数传输装置, 应用于传输节点, 包括: 确定模块, 设置为确定其所在的传输节点用于生成用户专用参考信号 UE specific reference signals的参数; 发送模块, 设置为将参数发送给与传输节点相邻的一个或多 个传输节点。 传输节点包括以下之一: 基站 (eNodeB)、 宏小区、 中继站、 微小区 (pico cell)、 微微小区 (femtocell)、 家庭基站、 射频远端头 (RRH)、 射频远端单元 (RRU)、 分布 式天线单元。 根据本发明的又一方面, 还提供了一种参数传输装置, 应用于传输节点, 包括: 接收模块, 设置为多点协作传输系统中的传输节点接收与该传输节点相邻的一个或多 个传输节点发送的一个或多个传输节点用于生成用户专用参考信号 UE specific reference signals的第一组参数; 选择模块, 设置为根据第一组参数, 选择用于生成该 选择模块所在的传输节点对应的 UE specific reference signals的第二组参数;生成模块, 设置为使用第二组参数生成该生成模块所在的传输节点对应的 UE specific reference signals。 通过本发明, 采用传输节点确定该传输节点用于生成 UE specific reference signals 的第一组参数; 传输节点将第一组参数发送给与该传输节点相邻的一个或多个传输节 点, 解决了协作集合中不同的传输节点采用自身确定的参数生成的 UE专用参考信号 存在相互干扰的问题,进而达到了减低传输节点的 UE专用参考信号之间干扰的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据相关技术的 LTE以及后续演进标准的网络架构的示意图; 图 2是根据本发明实施例的参数传输方法的流程图; 图 3是根据本发明实施例的参数生成方法的流程图; 图 4是根据本发明实施例的参数传输装置的结构框图; 图 5是根据本发明实施例的参数生成装置的结构框图; 图 6是根据本发明实施例的两个 eNodeB之间交互消息方法的流程图; 以及 图 7是根据本发明实施例的交互消息的示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 本实施例提供了一种参数传输方法, 图 2是根据本发明实施例的参数传输方法的 流程图, 包括如下的步骤 S202和步骤 S204。 步骤 S202: 传输节点确定该传输节点用于生成用户专用参考信号 (UE specific reference signals) 的第一组参数; 步骤 S204:传输节点将第一组参数发送给与该传输节点相邻的一个或多个传输节 点。 通过上述步骤, 传输节点将自身用于生成 UE specific reference signals的参数发送 给其相邻的传输节点, 使得其相邻的传输节点获知该传输节点用于生成 UE specific reference signals 的参数, 从而可以避开使用相同的参数生成相同的 UE specific reference signals, 解决了协作集合中不同的传输节点采用自身确定的参数生成的 UE 专用参考信号存在相互干扰的问题, 进而达到了减低传输节点的 UE专用参考信号干 扰的效果。 优选地, 该第一组参数包括以下至少之一: 天线端口号、 扰码身份识别标识、 总 层数、 小区身份标识、 最大下行带宽、 下行传输的物理下行共享信道 (PDSCH) 的频 率索引、 传输 UE specific reference signals的无线帧中的时隙号。 在一个优选实施方式中, 该传输节点通过 X2接口将第一组参数发送给与传输节 点相邻的一个或多个传输节点。 图 7是根据本发明实施例的交互消息的示意图, 如图 7所示, e Bl和 e B2之间通过 X2接口传输 UE专用参考信号相关消息。 该优选实 施方式, 实现了对传输节点的接口进行统一定义, 提高了系统传输的效率。 比较优的, 传输节点通过 X2 接口的 LOAD INFORMATION message 上设置的信息元素 (Information Element, 简称为 IE)项, 将该第一组参数发送给与传输节点相邻的一个 或多个传输节点。 通过现有信令传输参数, 降低了信令的传输负荷。 在实施中, 传输节点包括以下之一: 基站 (eNodeB)、 宏小区、 中继站、 微小区 (pico cell)、 微微小区 (femtocell)、 家庭基站、 射频远端头 (RRH)、 射频远端单元 (RRU)、分布式天线单元。在实际的多点协作传输系统中, 多种网元都可以进行协作 传输, 例如: 基站与微小区或微微小区, 中继站与 RRU, 提高了协作小区的覆盖范围, 并提高了协作传输的吞吐量和性能。 本实施例提供了一种参数生成方法, 图 3是根据本发明实施例的参数生成方法的 流程图, 如图 3所示, 该方法包括如下步骤 S302至步骤 S306。 步骤 S302: 多点协作传输系统中的传输节点接收与该传输节点相邻的一个或多个 传输节点发送的一个或多个传输节点用于生成用户专用参考信号 (UE specific reference signals) 的第一组参数; 步骤 S304: 传输节点根据第一组参数, 选择用于生成第二传输节点对应的 UE specific reference signals的第二组参数; 步骤 S306 : 传输节点使用第二组参数生成第二传输节点对应的 UE specific reference signals 通过上述步骤, 传输节点接收其相邻的传输节点用于生成 UE specific reference signals 的参数发送给其相邻的传输节点, 然后使用该参数生成其对应的用于生成 UE specific reference signals的参数, 从而在不同传输节点的 UE specific reference signals 占有相同的时频资源时候使用相同的参数导致生成相同的 UE specific reference signals, 或者不同传输节点的 UE specific reference signals可以占用不同的时频资源, 解决了协作集合中不同的传输节点采用自身确定的参数生成的 UE专用参考信号存在 相互干扰的问题, 进而达到了减低传输节点的 UE专用参考信号干扰的效果。 优选地, 该参数包括以下至少之一: 天线端口号、 扰码身份识别标识、 总层数、 小区身份标识、 最大下行带宽、 下行传输的物理下行共享信道 PDSCH的频率索引和 传输 UE specific reference signals的无线帧中的时隙号。 在一个优选实施方式中, 第二组参数中的至少之一对应的值与第一组参数对应的 值不同。 通过该方式, 可以使得使用第二组参数生成的 UE specific reference signals和 使用第一组参数生成的 UE specific reference signals不同, 这样, 就可以实现两个相邻 传输节点使用不同的 UE specific reference signals进行下行传输链路的数据接收和解 调, 避免了相邻传输节点之间使用相同的 UE specific reference signals导致的干扰。 比 较优的, 至少之一对应的值使得第一组参数和第二组参数分别生成的 UE specific reference signals正交, 例如: 参数中的天线端口号不同, 其余参数均相同。 在另外一个实施例中, 还提供了一种参数传输软件, 该软件用于执行上述实施例 及优选实施例中描述的技术方案。 在另外一个实施例中, 还提供了一种存储介质, 该存储介质中存储有上述参数传 输软件, 该存储介质包括但不限于: 光盘、 软盘、 硬盘、 可擦写存储器等。 本发明实施例还提供了一种参数传输装置, 该参数传输装置可以用于实现上述参 数传输方法及优选实施方式, 已经进行过说明的, 不再赘述, 下面对该参数传输装置 中涉及到的模块进行说明。 如以下所使用的, 术语"模块"可以实现预定功能的软件和 / 或硬件的组合。尽管以下实施例所描述的系统和方法较佳地以软件来实现,但是硬件, 或者软件和硬件的组合的实现也是可能并被构想的。 图 4是根据本发明实施例的参数传输装置的结构框图, 该装置可以应用于传输节 点, 如图 4所示, 该装置包括: 确定模块 42和发送模块 44, 下面对该结构进行详细 说明。 确定模块 42, 设置为确定其所在的传输节点用于生成用户专用参考信号 UE specific reference signals的第一组参数; 发送模块 44, 连接至确定模块 42, 设置为将 确定模块 42确定的第一组参数发送给与传输节点相邻的一个或多个传输节点。 优选地,传输节点包括以下之一: 基站(eN0deB)、宏小区、中继站、微小区(pico cell)、 微微小区(femtocell)、 家庭基站、 射频远端头(RRH)、 射频远端单元(RRU)、 分布式天线单元。 在另外一个实施例中, 还提供了一种参数生成软件, 该软件用于执行上述实施例 及优选实施例中描述的技术方案。 在另外一个实施例中, 还提供了一种存储介质, 该存储介质中存储有上述参数生 成软件, 该存储介质包括但不限于: 光盘、 软盘、 硬盘、 可擦写存储器等。 本发明实施例还提供了一种参数生成装置, 该参数生成装置可以用于实现上述参 数生成方法及优选实施方式, 已经进行过说明的, 不再赘述, 下面对该参数传输装置 中涉及到的模块进行说明。 如以下所使用的, 术语"模块"可以实现预定功能的软件和 / 或硬件的组合。尽管以下实施例所描述的系统和方法较佳地以软件来实现,但是硬件, 或者软件和硬件的组合的实现也是可能并被构想的。 图 5是根据本发明实施例的参数生成装置的结构框图, 如图 5所示, 该装置包括: 接收模块 52、 选择模块 54和生成模块 56, 下面对上述结构进行详细描述: 接收模块 52, 设置为接收与该传输节点相邻的一个或多个传输节点发送的一个或 多个传输节点用于生成用户专用参考信号 UE specific reference signals的第一组参数; 选择模块 54, 连接至接收模块 52, 设置为根据接收模块 52接收到的第一组参数, 选 择用于生成该选择模块 54所在的传输节点对应的 UE specific reference signals的第二 组参数; 生成模块 56, 连接至选择模块 54, 设置为使用选择模块 54选择的第二组参 数生成该生成模块 56所在的传输节点对应的 UE specific reference signals„ 下面将结合优选实施例进行说明, 以下优选实施例结合了上述实施例及优选实施 方式。 优选实施例一 本实施例提供了一种多个 eNodeB之间的信息交互的方法, 该方法包括如下步骤 S2至步骤 S6。 步骤 S2: 在多点协作传输系统中, 一个传输节点给一个或者多个相邻的传输节点 发送承载的 UE专用参考信号相关消息, 其中, UE专用参考信号相关消息至少包括以 下信息之一: 天线端口号、 扰码身份标识 ID、 总层数、 小区身份标识 ID ^SU、 最大下 行带宽 、 下行传输的 PDSCH的频率索引和一个无线帧中时隙号 。 在实施时, UE专用参考信号相关消息包括以下之一的方式或其任意组合的方式: 方式一: 小区身份标识 和最大下行带宽^^ 。 方式二: 一个无线帧中时隙号 。 方式三: PDSCH的频率索引和子帧号。 方式四: UE专用参考信号相关消息包括天线端口号 port、 扰码身份标识 ID, 涉 及节点的总层数。 在一个优选实施方式中,传输节点是通过 X2接口给相邻的传输节点发送 UE专用 参考信号相关消息。 比较优的, 传输节点通过 X2 接口的 LOAD INFORMATION message上设置的 IE项 (UE specific RS相关参数的指示 IE), 向其对应的相邻的传输 节点 (协作小区) 发送本传输节点的 UE specific RS的相关参数, 用于指示本传输节 点 UE specific RS的使用情况, 如生成的序列、 资源位置、 端口号和扰码身份等信息。 在一个优选实施方式中, 传输节点可以通过光纤、 微波、 电缆等传输媒介给相邻 的传输节点发送 UE专用参考信号相关消息。 在一个优选实施方式中, 对于传输节点和相邻传输节点, UE specific RS相关消息 可以通过 X2接口在传输节点之间交换。 步骤 S4: 接收的传输节点根据上述的 UE专用参考信号相关消息进行调度 UE。 步骤 S6: 传输节点调度 UE后, 进行下行协作多点传输。 优选地, 步骤 S6中的下行协作多点传输是指多个传输节点协作调度 -协作波束赋 形 (CS-CB)、 动态小区切换 (DCS) 或者联合传输 (JT)。 优选地, 传输节点可以是以下之一: eNodeB、 或者宏小区 (Macro cell)、 或中继站 relay 或微小区 pico cell、 或微微小区 femtocell、 或家庭基站 Home (e) NodeB 或 射频远端头 (RRH), 或者射频远端单元 (RRU), 或者分布式天线单元。 优选地, 传输节点唯一对应一个天线端口集合。 优选地, 传输节点具有单根或者多个根物理天线。 通过上述步骤,本实施例确定了多个协作的 eNodeB之间的 UE specific RS相关消 息的内容, 并将该消息发送至协作发送节点, 解决了当前的 UE specific RS不适用于 多点协作传输的问题, 使得多点协作的下行传输成为可能, 提供了移动通信系统的吞 吐量和性能。 优选实施例二 本实施例提供一种多个 eNodeB之间的 UE专用参考信号相关消息的交互的方法, 在本实施例中, 基于交互方法的消息的参数产生 UE占用参考信号, 然后使用 UE专 用参考信号进行下行数据的解调。 本实施例的方法可以保证多个 eNodeB 之间的 UE 占用参考信号的正交性。 图 6是根据本发明实施例的两个 eNodeB之间交互消息方法 的流程图, 如图 6所示, 该方法包括如下步骤 S602至步骤 S610。 步骤 S602, —个传输节点给一个或者多个相邻的传输节点发送承载的 UE专用参 考信号相关消息。 优选地, 该步骤中的 UE专用参考信号相关消息至少包括以下信息 之一: 天线端口号、 扰码身份标识 ID、 总层数、 小区身份标识 ID^SU、 最大下行带宽 、 下行传输的 PDSCH的频率索引和一个无线帧中时隙号 。 在实施中, UE专用参考信号相关消息可以采用以下方式之一或其任意组合: 方式一: UE 专用参考信号相关消息包括小区身份标识^^1和最大下行带宽
¾ rmax,DL
iVRB 方式二: UE专用参考信号相关消息包括一个无线帧中时隙号 。 方式三: UE专用参考信号相关消息包括 PDSCH的频率索引和子帧号。 方式四: UE专用参考信号相关消息包括天线端口号 port、 扰码身份标识 ID, 节 点的总层数。 优选地, 传输节点是 eNodeB、 或者宏小区 (Macro cell) 或中继站 relay、 或微小 区 pico cell、 或微微小区 femtocell、 或家庭基站 Home (e)NodeB、 或射频远端头 RRH, 或者射频远端单元 RRU, 或者分布式天线单元。 优选地,传输节点是通过 X2接口给相邻的传输节点发送 UE专用参考信号相关消 息消息。 更加具体地, 传输节点通过 X2接口的 LOAD INFORMATION message上设 置的 IE项(UE specific RS相关参数的指示 IE), 向其对应的相邻的传输节点(协作小 区)发送本传输节点的 UE specific RS的相关参数,用于指示本传输节点 UE specific RS 的使用情况, 如生成的序列、 资源位置、 端口号和扰码身份等信息。 优选地, 传输节点是通过光纤、微波、 电缆等传输媒介给相邻的传输节点发送 UE 专用参考信号相关消息。 优选地, 对于传输节点和相邻传输节点, UE specific RS相关消息可以通过 X2接 口在传输节点之间交换。 优选地, 传输节点唯一对应一个天线端口集合。 优选地, 传输节点具有单根或者多个根物理天线。 步骤 S604: 相邻传输节点接收 UE专用参考信号相关消息。 步骤 S606: 接收的传输节点中一个或者多个传输节点根据 UE专用参考信号相关 消息产生 UE专用参考信号。 优选地, 步骤 S506可以采用以下方式之一生成 UE专用参考信号。 方式一: 传输节点可以采用该消息中不同的端口号和其他相同的参数产生 UE专 用参考信号。 方式二: 传输节点可以采用该消息中不同的扰码身份和其他相同的参数产生 UE 专用参考信号。 方式三: 传输节点可以采用该消息中不同的时隙的参数产生 UE专用参考信号, 使得不同传输节点的 UE专用参考信号在不同的时隙上。 方式四: 传输节点可以采用该消息中不同的频率资源的参数产生 UE专用参考信 号, 使得不同传输节点的 UE专用参考信号在不同的频率资源上。 步骤 S608:接收的传输节点中一个或者多个传输节点将业务数据通过物理下行数 据共享信道 PDSCH发送到被调度的用户设备, 同时 UE专用参考信号嵌入在 PDSCH 映射的资源块中发送给 UE。 步骤 S610: 用户终端使用 UE专用参考信号进行相应的 PDSCH资源块的信道估 计, 并基于信道估计的结果进行 MIMO检测和数据解调。 优选地, 下行协作多点传输是指多个传输节点协作调度-协作波束赋形 (CS-CB)、 动态小区切换 (DCS) 或者联合传输 (JT)。 需要说明的是, 现有技术中的 eNode B 之间交互的消息内容主要适用于单小区 MIMO传输, 对于多点协作传输 (COMP) 的缺少的支持, 会导致无法进行下行解调 操作, 通过本实施例的上述步骤, 给出支持 COMP的 eNodeB之间交互消息的格式, 某个 eNodeB可以根据相邻 eNodeB的 UE specific RS的相关消息确定相邻 eNodeB的
UE专用参考信号的使用情况, 进一步选择合适的 UE专用参考信号参数, 最终实现协 作集合中不同的 eNodeB的 UE专用参考信号之间都是正交的,避免了 UE专用参考信 号之间的干扰。 从而有效地保证信道预测的正确性, 进而很好地解决了协作多点传输 COMP的数据解调问题。 优选实施例三 本实施例提供了一种多个 eNodeB之间的 UE专用参考信号相关消息的交互的方 法, 该方法包括如下步骤 S702至步骤 S710。 步骤 S702,—个传输节点 eNodeB 1通过 X2接口给另一个相邻的传输节点 eNodeB2 发送承载的 UE专用参考信号相关消息。 具体地, UE 专用参考信号相关消息可以承载在负载信息 (Load information)消息 中;其中, UE专用参考信号相关消息包括: eNodeB 1小区身份标识 ID Ν 、 eNodeB 1 支持的最大下行带宽 、 天线端口号 port 7、 扰码身份标识 n_SCID =0、 总层数 v=2、 频域索引" PRB和一个无线帧中时隙号 ns。 更加具体地, 传输节点通过 X2接口的 LOAD INFORMATION message上设置的 IE项 (UE specific RS相关参数的指示 IE), 向其对应的相邻的传输节点 (协作小区) 发送本传输节点的 UE specific RS的相关参数,用于指示本传输节点 UE specific RS的 使用情况, 如生成的序列、 资源位置、 端口号和扰码身份等信息。 步骤 S704: 相邻传输节点 eN0deB2接收 UE专用参考信号相关消息。 步骤 S706:接收的一个传输节点 eN0deB2根据 UE专用参考信号相关消息的参数 产生 UE专用参考信号。 具体地,首先根据 UE专用参考信号相关消息中扰码身份标识 n_SCID =0,eNodeBl
7max,DL ¾ rcell 支持的最大下行带宽 V rb 和 eNodeBl小区身份标识 ID VID 和一个无线帧中时隙 号 等参数产生参考信号序列。具体地, 对于端口;^ ί78,···,"+6} , 参考信号序列 的产生方法定义为:
Figure imgf000014_0001
。 需要说明的是,伪随机序列 的是由伪随机序列发生器产生,伪随机序列产生器 的初始化值在每个子帧的开始初始化为^ = ( / 2+ 1)' (2A^U + 1)' 2l6 + "sciD , 如果
PDSCH在端口 7 or 8 传输时, UE可以设置" scm取值为 0。 在上述步骤之后, 在频域的索引为" PRB 的 PRB上被分配用于 PDSCH传输时, 基 于参考信号相关消息中频域索引 "^^和总层数 v=2, 以及不同于参考信号相关消息中 天线端口号 port 7的天线端口(如 Port 8),根据 LTE-A标准即 R10标准定义的方式实 现将一部分参考信号序列映射到一个子帧的特定资源元素。 步骤 S708:接收的传输节点 eNodeB2传输节点将业务数据通过物理下行数据共享 信道 (PDSCH) 发送到被调度的用户设备, 同时 UE专用参考信号嵌入在 PDSCH映 射的资源块中发送给 UE。 步骤 S710: 用户终端使用 UE专用参考信号进行相应的 PDSCH资源块的信道估 计, 并基于信道估计的结果进行 MIMO检测和数据解调。 需要说明的是, eNodeBl使用 UE专用参考信号相关消息的参数产生 UE占用参 考信号,用于 eNodeBl的下行数据的解调。与 eNodeBl产生 UE占用信号的参数比较, eN0deB2使用了天线端口不同而其它参数相同的参数来产生 UE专用参考信号。所以, 由于 eNodeBl使用了端口 7而 eNodeB2使用了端口 8,所以 eNodeBl产生的 UE专用 信号和 eNodeB2使用的 UE专用信号保持了正交性, 相互不会发生干扰。 最终, 不同 小区参考信号的正交很好地支持协作多点传输或者分布式多天线系统, 有效地抑制了 小区干扰, 提高了系统的边缘吞吐量。 优选地, 天线端口号、 扰码身份标识和总层数三个参数可以进行联合编码, 即用 一个索引标识当前的三个参数的取值。 优选实施例四 本实施例提供了一种多个 eNodeB之间的 UE专用参考信号相关消息的交互的方 法, 该方法包括如下步骤 S802至步骤 S810。 步骤 S802:—个传输节点 eNodeBl通过 X2接口给另一个相邻的传输节点 eNodeB2 发送承载的 UE专用参考信号相关消息, 具体地 UE专用参考信号相关消息放在负载 信息 (Load information)消息中; 其中, UE专用参考信号相关消息包括: eNodeBl小区 rcell ¾ 7max,DL
身份标识 ID YV lD 、 eNodeBl支持的最大下行带宽 RB 、天线端口号 port 7和 port 8、扰码身份标识 n_SCID =0、总层数 v=2、频域索引" PRB和一个无线帧中时隙号 ns。 更加具体地, 传输节点通过所述 X2接口的 LOAD INFORMATION message上设 置的 IE项(UE specific RS相关参数的指示 IE), 向其对应的相邻的传输节点(协作小 区)发送本传输节点的 UE specific RS的相关参数,用于指示本传输节点 UE specific RS 的使用情况, 如生成的序列、 资源位置、 端口号和扰码身份等信息。 步骤 S804: 相邻传输节点 eN0deB2接收 UE专用参考信号相关消息。 步骤 S806:接收的一个传输节点 eN0deB2根据 UE专用参考信号相关消息的参数 产生 UE专用参考信号。 具体地,首先根据 UE专用参考信号相关消息中扰码身份标识 n_SCID =0,eNodeBl 7max,DL ¾ rcell 支持的最大下行带宽 V rb 和 eNodeBl小区身份标识 ID VID 和一个无线帧中时隙 号 等参数产生参考信号序列。具体地, 对于端口;^ ί78,···,"+6} , 参考信号序列 的产生方法定义为: r(m) = OT = 0,1,..J2N™X'DL -1
Figure imgf000016_0001
。 需要说明的是, 伪随机序列 的是由伪随机序列发生器产生, 伪随机序列产生 器的初始化值在每个子帧的开始初始化为^ = ( / 2+ 1)' (2A^U + 1)' 2l6 + "sciD 。 此时,
PDSCH在端口 7和 8传输, UE需要设置" scm 取值为 1, 即必须与参考信号相关消息 中1 _8 0取值不同, 这样才能保证不同小区的 UE占用参考信号具有一定的正交性。 然后, 在频域的索引为" PRB 的 PRB上被分配用于 PDSCH传输时, 基于参考信号 相关消息中相同的频域索引 "PRB、 总层数 v=2和天线端口号 7和 8, 根据 LTE-A标 准即 R10 标准定义的方式实现将一部分参考信号序列映射到一个子帧的特定资源元 素。 步骤 S808:接收的传输节点 eNodeB2传输节点将业务数据通过物理下行数据共享 信道 PDSCH发送到被调度的用户设备, 同时 UE专用参考信号嵌入在 PDSCH映射的 资源块中发送给 UE。 步骤 S810: 用户终端使用 UE专用参考信号进行相应的 PDSCH资源块的信道估 计, 并基于信道估计的结果进行 MIMO检测和数据解调。 需要说明的是, eNodeBl使用 UE专用参考信号相关消息的参数产生 UE占用参 考信号,用于 eNodeBl的下行数据的解调。与 eNodeBl产生 UE占用信号的参数比较, eNodeB2使用了 n_SCID不同而其它参数相同的参数来产生 UE专用参考信号。 所以, 虽然, eNodeBl和 eNodeB2同时使用相同的端口 (端口 7和端口 8), 由于 eNodeBl 使用了取值为 0的扰码身份 n_SCID,而 eNodeB2使用了取值为 1的扰码身份 n_SCID, 所以 eNodeBl产生的 UE专用信号和 eNodeB2使用的 UE专用信号保持了一定的正交 性, 相互不会发生干扰。 最终, 不同小区参考信号的正交很好地支持协作多点传输或 者分布式多天线系统, 有效地抑制了小区干扰, 提高了系统的边缘吞吐量。 优选地, 天线端口号、 扰码身份标识和总层数三个参数可以进行联合编码, 即用 一个索引标识当前的三个参数的取值。 综上所述,借助本发明实施例提供的技术方案,通过某个 eNodeB向相邻的 eNodeB 交互 UE专用参考信号的相关消息, 相邻的 eNodeB可以根据交互的 UE specific RS的 相关消息确定 eNodeB的 UE专用参考信号的使用情况,进一步选择合适的 UE专用参 考信号参数, 最终实现协作集合中不同的 eNodeB的 UE专用参考信号之间都是正交 的或者不同的 eNodeB的 UE专用参考信号占有不同的时频资源,避免了 UE专用参考 信号之间的干扰, 从而有效地保证信道预测的正确性, 进而很好地解决了协作多点传 输 COMP的数据解调问题。 需要说明的是, 这些技术效果并不是上述所有的实施方式 所具有的, 有些技术效果是某些优选实施方式才能取得的。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而可以将 它们存储在存储装置中由计算装置来执行,或者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限 制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种参数传输方法, 包括:
传输节点确定该传输节点用于生成用户专用参考信号 UE specific reference signals的第一组参数;
所述传输节点将所述第一组参数发送给与所述传输节点相邻的一个或多个 传输节点。
2. 根据权利要求 1所述的方法, 其中, 所述第一组参数包括以下至少之一: 天线 端口号、 扰码身份识别标识、 总层数、 小区身份标识、 最大下行带宽、 下行传 输的物理下行共享信道 PDSCH 的频率索引、 传输所述 UE specific reference signals的无线帧中的时隙号。
3. 根据权利要求 1所述的方法, 其中, 所述传输节点通过 X2接口将所述第一组 参数发送给与所述传输节点相邻的一个或多个传输节点。
4. 根据权利要求 3 所述的方法, 其中, 所述传输节点通过所述 X2接口的 LOAD
INFORMATION message上设置的信息元素 IE项, 将所述第一组参数发送给与 所述传输节点相邻的一个或多个传输节点。
5. 根据权利要求 1至 4中任一项所述的方法,其中,所述传输节点包括以下之一: 基站 eNodeB、 宏小区、 中继站、 微小区 pico cell、 微微小区 femtocell、 家 庭基站、 射频远端头 RRH、 射频远端单元 RRU、 分布式天线单元。
6. 一种参数生成方法, 包括: 传输节点接收与该传输节点相邻的一个或多个传输节点发送的所述一个或 多个传输节点用于生成用户专用参考信号 UE specific reference signals的第一组 参数;
所述传输节点根据所述第一组参数,选择用于生成所述传输节点对应的 UE specific reference signals的第二组参数;
所述传输节点使用所述第二组参数生成所述传输节点对应的 UE specific reference signals
7. 根据权利要求 6所述的方法, 其中, 所述第二组参数中的至少之一对应的值与 所述第一组参数对应的值不同。
8. 根据权利要求 6或 7所述的方法, 其中, 所述第一组参数和所述第二组参数包 括以下至少之一: 天线端口号、 扰码身份识别标识、 总层数、 小区身份标识、 最大下行带宽、 下行传输的物理下行共享信道 PDSCH的频率索引和传输所述 UE specific reference signals的无线帧中的时隙号。
9. 一种参数传输装置, 应用于传输节点, 包括:
确定模块, 设置为确定其所在的传输节点用于生成用户专用参考信号 UE specific reference signals的参数;
发送模块, 设置为将所述参数发送给与所述传输节点相邻的一个或多个传 输节点。
10. 根据权利要求 9所述的装置, 其中, 所述传输节点包括以下之一:
基站 eNodeB、 宏小区、 中继站、 微小区 pico cell、 微微小区 femtocell、 家 庭基站、 射频远端头 RRH、 射频远端单元 RRU、 分布式天线单元。
11. 一种参数生成装置, 应用于传输节点, 包括:
接收模块, 设置为接收与该传输节点相邻的一个或多个传输节点发送的所 述一个或多个传输节点用于生成用户专用参考信号 UE specific reference signals 的第一组参数;
选择模块, 设置为根据所述第一组参数, 选择用于生成该选择模块所在的 传输节点对应的 UE specific reference signals的第二组参数;
生成模块, 设置为使用所述第二组参数生成该生成模块所在的传输节点对 应的 UE specific reference signals□
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