WO2019154060A1 - 一种中继节点同步信号的发送方法及装置 - Google Patents
一种中继节点同步信号的发送方法及装置 Download PDFInfo
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- WO2019154060A1 WO2019154060A1 PCT/CN2019/072615 CN2019072615W WO2019154060A1 WO 2019154060 A1 WO2019154060 A1 WO 2019154060A1 CN 2019072615 W CN2019072615 W CN 2019072615W WO 2019154060 A1 WO2019154060 A1 WO 2019154060A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/212—Time-division multiple access [TDMA]
- H04B7/2125—Synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15571—Relay station antennae loop interference reduction by signal isolation, e.g. isolation by frequency or by antenna pattern, or by polarization
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Definitions
- the present invention relates to communication technologies, and in particular, to a method and apparatus for transmitting a synchronization signal of a relay node in a wireless communication system.
- High bandwidth is an inevitable requirement for the development of future wireless networks, including New Radio (NR) for 5th generation mobile networks or 5th generation wireless systems (5G) wireless networks. Due to the low frequency band, such as below the 6G Hertz (GHz) band, the bandwidth is gradually exhausted, and the high frequency band will become the choice of frequency bands that the wireless network seeks to use in the future. In the current NR study, high frequency bands (such as the 20-30 GHz band) and 6G frequency bands are important frequency bands for NR extended bandwidth. On the other hand, a relay node (RN) that introduces enhanced coverage is an important means to solve network capacity and coverage extension. At present, NR considers the application of high frequency, and uses beam-based transmission, which is quite different from the traditional Long Term Evolution (LTE) system. This difference will lead to the deployment of relay nodes that need to overcome some of the problems that traditional networks do not have.
- LTE Long Term Evolution
- An embodiment of the present application provides a method and an apparatus for transmitting a relay node synchronization signal, which solves how a relay node may be configured as a layer 2 or layer 3 relay, how to obtain synchronization signal information from the network, and according to the synchronization signal information.
- a first aspect provides a method for transmitting a synchronization signal, including: a relay node receiving synchronization signal information sent by an upper node through an air interface, where the synchronization signal information includes at least one of the following information: a subcarrier spacing of the synchronization signal, and a relay The frequency band information of the node operation, the information of the relay node physical broadcast channel PBCH, the period of the synchronization signal, and the indication information of the synchronization signal acquisition mode; the relay node transmits the synchronization signal according to the information of the synchronization signal.
- the relay node sends the synchronization signal information by using an air interface message
- the air interface message may include an RRC message, such as an RRC reconfiguration message, an RRC connection reestablishment message, or may also be a MAC CE.
- RRC message such as an RRC reconfiguration message, an RRC connection reestablishment message, or may also be a MAC CE.
- the NR supports the function of part of the bandwidth
- different relay nodes in one cell can work on the same or different partial bandwidths as the Donor node, so as to better adapt to the service requirements of different locations in the cell, therefore,
- the synchronization signal information of the relay node is configured through the air interface, which has greater flexibility and freedom to adapt to the needs of network service changes.
- the relay node sends a synchronization signal information request to the upper node to request acquisition of the synchronization signal information of the relay node.
- the relay node actively sends a synchronization signal information request to the upper node, and the relay node may determine the time for acquiring the synchronization signal information according to the current state, and the air interface transmission efficiency is higher.
- the synchronization signal includes a synchronization signal sequence
- the synchronization signal information further includes: a physical cell identifier PCI
- the relay node is configured to generate a synchronization signal sequence according to the PCI.
- the relay node can determine the synchronization signal sequence transmitted by itself by synchronizing the PCI in the signal information.
- the synchronization signal information further includes information of a partial bandwidth corresponding to the synchronization signal information
- the relay node sends the synchronization signal on a part of the bandwidth according to the information of the partial bandwidth corresponding to the synchronization signal information.
- the synchronization signal information further includes: a transmission power corresponding to the synchronization signal, and the relay node transmits the synchronization signal by using the transmission power.
- the relay node may transmit the same or different power on different synchronization signal/physical broadcast channel blocks by the configuration of the transmission power, or the partial synchronization signal/physical broadcast channel block is different from the other part of the synchronization signal/physical
- the transmission power on the broadcast channel block can adapt to the channel conditions in different directions and meet the coverage requirements of the relay node.
- the method for transmitting the synchronization signal further includes: the relay node receiving an identifier of the relay node sent by the upper node, and acquiring the relay node according to the identifier of the relay node Synchronization signal information.
- the relay node may determine whether the upper node performs configuration or reconfiguration of the synchronization signal information by using the identifier of the relay node, thereby avoiding the lack of the identifier and causing the wrong configuration.
- the method for transmitting the synchronization signal further includes: the relay node receives the identifier of another relay node sent by the upper node and the synchronization signal information of the other relay node, and the other The identity of one relay node and the synchronization signal information of the other relay node are forwarded to another relay node.
- the relay node may determine which subordinate relay node to forward the synchronization signal information to ensure that the subordinate relay node can correctly receive the synchronization signal information.
- a second aspect provides a method for transmitting synchronization signal information, including: a network node transmitting synchronization signal information to a relay node through an air interface, where the synchronization signal information includes at least one of the following information: a subcarrier spacing of the synchronization signal, and a relay The frequency band information of the node operation, the information of the relay node physical broadcast channel, the period of the synchronization signal, and the indication information of the synchronization signal acquisition mode; and the network node receives the confirmation message sent by the relay node.
- the network node configures the synchronization signal information to the relay node through the air interface, which can effectively reduce the deployment cost and enable rapid deployment.
- the network node can configure the relay node to work on the same or different BWP according to the service requirements in the current cell, thereby enhancing the flexibility and freedom of service deployment.
- the network node receives the synchronization signal information request sent by the relay node, and the synchronization signal information request is used to request the network node to send the synchronization signal information of the relay node to the relay node.
- the network may perform configuration of the synchronization signal information on the relay node based on the request, and ensure that the relay node that needs to acquire the synchronization signal information is configured, and the signaling efficiency is high.
- the network node receives the synchronization signal information configuration request sent by the operation management and maintenance node, where the synchronization signal information configuration request is used to instruct the network node to send the synchronization signal information to the relay node.
- the operation management and maintenance node controls the network node to send synchronization signal information to the relay node, thereby improving the security of the relay node management, and optimizing the relay node in the network through unified management of the operation management and maintenance nodes. Deployment in .
- the synchronization signal includes a synchronization signal sequence
- the synchronization signal information further includes: a physical cell identifier PCI, so that the relay node generates a synchronization signal sequence according to the PCI.
- the network node performs PCI configuration on the relay node, and can control whether the synchronization signal of the relay node is the same as the synchronization signal of the network node, and configure the relay node as the layer 2 relay or layer 3 as needed. Next, to optimize the traffic transmission in the cell.
- the synchronization signal information further includes information of a partial bandwidth corresponding to the synchronization signal information
- the relay node transmits the synchronization signal on a part of the bandwidth according to the information of the partial bandwidth corresponding to the synchronization signal information.
- the synchronization signal information further includes: a transmission power corresponding to the synchronization signal.
- the relay node may transmit the same or different power on different synchronization signal/physical broadcast channel blocks by using the configuration of the transmission power, or the partial synchronization signal/physical broadcast channel block is different from the other
- the transmission power on a part of the synchronization signal/physical broadcast channel block can adapt to the channel conditions in different directions and meet the coverage requirements of the relay node.
- the method for transmitting the synchronization signal further includes: the upper node transmitting the identifier of the relay node together with the synchronization signal information to the relay node, so that the relay node is configured according to the relay node. Identify the synchronization signal information of the acquisition relay node.
- the network node indicates that the synchronization signal information is configured for the relay corresponding to the identifier of the relay node by using the identifier of the relay node, and avoids generating an error when configuring or reconfiguring multiple relay nodes in one time.
- the network node sends the identifier of the another relay node and the synchronization signal information of the another relay node to the relay node, so that the relay node will The identity of one relay node and the synchronization signal information of the other relay node are forwarded to another relay node.
- the network may configure multiple relay nodes at one time, and the identifier of another relay node may enable the relay node to correctly acquire its own synchronization signal information, thereby improving configuration efficiency and saving configuration signaling.
- the identity of another relay node can help the relay node to correctly forward and route the synchronization signal information.
- a relay device which is used to implement the function of a method for transmitting a synchronization signal provided by any of the possible implementation manners of the foregoing first aspect
- the hardware implementation can also be implemented by hardware implementation of the corresponding software.
- the hardware or software includes one or more corresponding units of the above functions.
- the structure of the relay device includes a processor and a memory, where the code stores data and data, and the memory is coupled to the processor, and the processor is configured to support the user equipment to perform the first Aspect or method of transmitting a synchronization signal provided by any of the possible implementations of the first aspect.
- the relay device may further include a communication interface coupled to the processor or the memory.
- a network device configured to implement the function of a synchronization signal sending method provided by any of the foregoing second aspect or the second aspect of the second aspect, the function It can be implemented by hardware or by software.
- the hardware or software includes one or more corresponding units of the above functions.
- the structure of the network device includes a processor and a memory, where the memory and/or the code required by the baseband processor are stored, and the memory is coupled to the processor, and the processor and/or baseband processing
- the device is configured to support the function of the network device to perform the method of transmitting the synchronization signal provided by the second aspect or any of the possible implementations of the second aspect.
- the network device can also include a communication interface coupled to the memory or processor.
- a still further aspect of the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the first aspect or the first aspect described above
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the synchronization provided by any of the above first aspect or any of the possible implementations of the first aspect A method of transmitting a signal, or a method of transmitting a synchronization signal provided by any of the possible implementations of the second aspect or the second aspect described above.
- a communication system including a plurality of devices, including a relay device and a network device; wherein the relay device is a relay device provided by the foregoing aspects, The method for transmitting a synchronization signal provided by the relay device, which is provided by any one of the foregoing first aspect or the first aspect of the first aspect; and/or the network device is provided by the network device provided in the foregoing aspects, for supporting The network device performs the method for transmitting the synchronization signal provided by the second aspect or any of the possible implementation manners of the second aspect.
- a device which is a processor, an integrated circuit or a chip, for performing the steps performed by a processing unit of a relay node in an embodiment of the present invention, for example, obtaining a sending by a superior node Synchronization signal information, a synchronization signal is generated based on the synchronization signal information, and the synchronization signal is output.
- the content of the synchronization signal information, the transmission and acquisition of the synchronization signal information have been described in the foregoing other aspects or embodiments, and are not described herein again.
- the apparatus being a processor, an integrated circuit or a chip for performing the steps performed by the processing unit of the network device in the embodiment of the present invention to generate synchronization of the relay node Signal information and output.
- the content of the synchronization signal information, the transmission and acquisition of the synchronization signal information have been described in the foregoing other aspects or embodiments, and are not described herein again.
- the apparatus is further configured to acquire a synchronization signal information request sent by the relay node, where the synchronization signal information request is used to request the network device to send the synchronization signal information of the relay device to the relay device; Synchronizing signal information of the relay device is generated and output according to the synchronization signal information request.
- 1-1 is an IAB communication system provided by an embodiment of the present application.
- FIG. 1-3 are respectively a user plane and a control plane protocol stack structure of a layer 2 relay system according to an embodiment of the present application;
- FIG. 1-5 are respectively a user plane and a control plane protocol stack structure of a layer 3 relay system according to an embodiment of the present application;
- 2-1 and 2-2 are examples of symbol positions of a SS/PBCH Block in a radio frame according to an embodiment of the present application;
- FIG. 3 is a flowchart of a process for acquiring a synchronization signal and a sending process by a relay node according to an embodiment of the present disclosure
- FIG. 4 is a flowchart of obtaining, by a relay node, synchronization signal information from a Donor node according to an embodiment of the present disclosure
- FIG. 5 is a flowchart of configuring a synchronization signal for a relay node by a Donor node according to an embodiment of the present disclosure
- FIG. 6 is a flowchart of requesting synchronization signal information of a relay node according to an embodiment of the present disclosure
- FIG. 7 is a flowchart of acquiring synchronization signal information of a relay node in an access process according to an embodiment of the present disclosure
- FIG. 8 is a flowchart of a relay node acquiring synchronization signal information in a contention resolution message according to an embodiment of the present disclosure
- FIG. 9 is a flowchart of acquiring synchronization signal information in a two-step random access process according to an embodiment of the present application.
- FIG. 10 is a flowchart of a Donor node handover according to an embodiment of the present application.
- FIG. 11 is a flowchart of a synchronization signal configuration with a multi-level relay node according to an embodiment of the present application
- FIG. 12 is a schematic structural diagram of a relay device according to an embodiment of the present application.
- FIG. 13 is a schematic diagram of a possible logical structure of a network device according to an embodiment of the present application.
- NR is considering introducing an integrated Access and Backhaul (IAB) solution to further reduce deployment costs and increase deployment flexibility, thereby introducing integrated access backhaul.
- IAB integrated Access and Backhaul
- the relay node integrated with the backhaul is referred to as a relay transmission reception point (rTRP) to distinguish the relay of the LTE.
- rTRP relay transmission reception point
- 3GPP Third Generation Partnership Project
- NR IAB as the standardization target for Release 16, which is currently in its infancy.
- the scheme in which the base station transmits the synchronization signal in the NR has been determined in the standard, and the difference from the LTE synchronization signal transmission method is that the transmission of the air interface synchronization signal in the NR is based on the synchronization signal/physical broadcast due to the introduction of the high frequency.
- SS/PBCH Block Synchronization Signal/Physical Broadcast Channel Block
- Numerology refers to physical layer waveform parameters, including Subcarrier Spacing (SCS) and Cyclic Prefix (CP) configuration.
- 1-1 is a schematic structural diagram of a communication system to which the embodiment of the present application is applied.
- the communication system mentioned in the embodiment of the present application includes, but is not limited to, a Narrow Band-Internet of Things (NB-IoT) system, a Long Term Evolution (LTE) system, and a next-generation 5G.
- NB-IoT Narrow Band-Internet of Things
- LTE Long Term Evolution
- 5G next-generation 5G.
- D2D Device to Device
- An IAB system includes at least one base station 100, and one or more User Equipment (UE) 101 served by the base station 100, one or more relay nodes rTRP 110, and one or more services served by the rTRP 110
- the UE 111 typically the base station 100 is referred to as a Donor Next Generation Node B (DgNB), and the rTRP 110 is connected to the base station 100 via a wireless backhaul link 113.
- the donor base station is also referred to herein as a host node, ie, a Donor node.
- the base station includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), Base Transceiver Station (BTS), home base station (for example, Home evolved NodeB, or Home Node B, HNB), Baseband Unit (BBU), or Next Generation New Radio (NR, New Radio) base station ( Such as gNB) and so on.
- eNB evolved Node B
- RNC radio network controller
- NB Node B
- BSC base station controller
- BTS Base Transceiver Station
- home base station for example, Home evolved NodeB, or Home Node B, HNB
- BBU Baseband Unit
- NR Next Generation New Radio
- the integrated access and backhaul system may also include a plurality of other relay nodes, such as rTRP 120 and rTRP 130, which are connected to the relay node rTRP 110 via wireless backhaul link 123 for access to the network, rTRP 130
- the rTRP 120 serves one or more UEs 121
- the rTRP 130 serves one or more UEs 131 by connecting to the relay node rTRP 110 over the wireless backhaul link 133.
- both relay node rTRP 110 and rTRP 120 are connected to the network via a wireless backhaul link.
- the wireless backhaul link is from the perspective of a relay node, such as the wireless backhaul link 113 is a backhaul link of the relay node rTRP 110, and the wireless backhaul link 123 is a relay node rTRP 120.
- Backhaul link As shown in Figure 1-1, a relay node, such as 120, can connect to another network through a wireless backhaul link, such as 123, to connect to another network, and the relay node can go through multiple levels of wireless. The node is connected to the network.
- a node that provides wireless backhaul link resources such as 110
- a superior node of the relay node 120 is referred to as a superior node of the relay node 120
- 120 is referred to as a lower node of the relay node 110.
- a subordinate node can be regarded as a user equipment UE of a superior node. It should be understood that in the integrated access and backhaul system shown in FIG. 1-1, one relay node is connected to one upper node, but in the future relay system, in order to improve the reliability of the wireless backhaul link, one relay A node, such as 120, may have multiple upper nodes serving a relay node at the same time.
- the rTRP 130 in the figure may also be connected to the relay node rTRP 120 through the backhaul link 134, that is, both the rTRP 110 and the rTRP 120 are The superior node of rTRP 130.
- the user equipment UE 101, 111, 121, 131 may be a stationary or mobile device.
- the mobile device can be a mobile phone, a smart terminal, a tablet, a laptop, a video game console, a multimedia player, or even a mobile relay node.
- a stationary device is usually located at a fixed location, such as a computer, an access point (connected to a network via a wireless link, such as a stationary relay node), and the like.
- the name of the relay node rTRP 110, 120, 130 does not limit the scenario or network it deploys, and may be any other name such as relay, RN, and the like.
- the use of rTRP in this application is only for convenience of description.
- the wireless links 102, 112, 122, 132, 113, 123, 133, 134 may be bidirectional links, including uplink and downlink transmission links.
- the wireless backhaul links 113, 123, 133, 134 may be used by the upper node to provide services for the lower nodes, such as the upper level.
- the node 100 provides a wireless backhaul service for the lower node 110. It should be understood that the uplink and downlink of the backhaul link may be separate, ie, the uplink and downlink are not transmitted through the same node.
- the downlink transmission refers to a superior node, such as node 100, a lower-level node, such as node 110, transmitting information or data
- uplink transmission refers to a lower-level node, such as node 110, to a higher-level node, such as node 100, transmitting information or data.
- the node is not limited to being a network node or a UE.
- the UE may act as a relay node to serve other UEs.
- the wireless backhaul link may in turn be an access link in some scenarios.
- the backhaul link 123 may also be regarded as an access link for the node 110, and the backhaul link 113 is also an access link of the node 100.
- the above-mentioned upper-level node may be a base station or a relay node
- the lower-level node may be a relay node or a UE with a relay function.
- the lower-level node may also be a UE.
- the relay nodes shown in Figure 1-1 can exist in two forms: one exists as an independent access node, and can independently manage UEs accessing the relay node.
- the relay node usually has an independent physical cell identifier (PCI).
- PCI physical cell identifier
- the relay of this form usually needs to have a complete protocol stack function, such as a radio resource control (RRC) function.
- RRC radio resource control
- the relay is usually called a layer 3 relay; the relay of another form does not have a separate PCI, and it belongs to the same cell as the Donor node, such as Donor eNB and Donor gNB, and does not manage the user.
- the protocol stack of layer 2 and layer 3 relay is shown in Figure 1-2 to Figure 1-5.
- a Donor node refers to a node that can access the core network through the node, or an anchor base station of the radio access network, through which the base station can access the network.
- the anchor base station is responsible for data processing of the Packet Data Convergence Protocol (PDCP) layer, or is responsible for receiving data of the core network and forwarding it to the relay node, or receiving data of the relay node and forwarding it to the core network.
- PDCP Packet Data Convergence Protocol
- FIG 1-2 and Figure 1-3 are the protocol stack protocol diagrams of the user plane and control plane of the Layer 2 relay system, respectively.
- the Next Generation User Plane (NG-UP) in the figure is mainly a user plane gateway, and the Next Generation Control Plane (NG-CP) is a control plane node.
- the user plane protocol layer of the UE includes: a physical layer (Physical Layer, PHY), a medium access control (MAC) layer, a radio link control (Radio, Link Control, RLC) layer, a PDCP layer, and service data.
- SDAP Service Data Adaptation Protocol
- IP Internet Protocol
- the air interface protocol layer of the layer 2 relay and the UE mainly includes: a PHY layer, a MAC layer, and an RLC layer, and a protocol stack of an interface that communicates with the Donor node through the backhaul link includes: a PHY layer, a MAC layer, an RLC layer, and a suitable layer.
- Adaptation Adpt.
- the protocol stack of the interface of the Donor node, that is, the DgNB and the layer 2 relay includes: a PHY layer, a MAC layer, an RLC layer, an Adpt. layer, a PDCP layer, and a SDAP layer.
- the DgNB and the NG-UP are generally wired connections, and the service bearer is usually established through a tunnel.
- the protocol stack of the DgNB corresponding to the NG-UP includes: L1 (Layer 1, L1), L2 (Layer 2, L2), IP layer, and user data.
- the protocol stack of the NG-UP includes: L1, L2, IP layer, UDP layer, GTP-U layer, and IP layer.
- Figure 1-3 shows the control plane protocol stack structure of the Layer 2 relay system.
- the protocol stack of the UE includes: a PHY layer, a MAC layer, an RLC layer, a PDCP layer, an RRC layer, and a Non-Access Stratum (NAS), a Layer 2 relay control plane protocol stack, and a user plane protocol stack. No longer.
- the control plane interface protocol stack of the DgNB and Layer 2 relay includes: a PHY layer, a MAC layer, an RLC layer, an Adpt. layer, a PDCP layer, and an RRC layer.
- the DgNB and the core network control plane network element NG-CP are usually connected by wire.
- the protocol stack of the DgNB on the interface includes: L1, L2, IP layer, Stream Control Transmission Protocol (SCTP) layer, and S1.
- S1 Application Protocol (S1-AP) layer where S1 is the code of the interface.
- the protocol stack of the NG-CP on the S1 interface includes: an L1, an L2, an IP layer, an SCTP layer, an S1-AP layer, and a NAS layer, where the NAS layer corresponds to the NAS layer of the UE.
- Figures 1-4 and 1-5 are the user plane and control plane protocol stack structures of the Layer 3 relay system, respectively.
- the layer 3 relay and the UE support a complete air interface protocol stack on the air interface, including: PHY layer, MAC layer, RLC layer, PDCP layer, and SDAP layer.
- the protocol stack of the relay node includes: a PHY layer, a MAC layer, an RLC layer, a PDCP layer, an IP layer, a UDP layer, and a GTP-U layer.
- the protocol stack of the S1 interface of the DgNB includes: a PHY layer, a MAC layer, an RLC layer, a PDCP layer, an IP layer, a UDP layer, and a GTP-U layer.
- the user plane protocol stack structure of other peer 2 relay systems will not be described again.
- Figure 1-5 shows the control plane protocol stack structure of the Layer 3 relay protocol.
- the layer 3 relay system control plane protocol stack structure, the layer 3 relay and the UE support the complete control plane protocol stack on the air interface, including: PHY layer, MAC layer , RLC layer, PDCP layer, and RRC layer.
- the protocol stack of the interface between the layer 3 relay and the DgNB includes: a PHY layer, a MAC layer, an RLC layer, a PDCP layer, an IP layer, an SCTP layer, and an S1-AP layer.
- the protocol stacks of the DgNB and Layer 3 relay interfaces include: a PHY layer, a MAC layer, an RLC layer, a PDCP layer, an IP layer, an SCTP layer, and an S1-AP layer.
- the control plane protocol stack structure of other peer 2 relay systems will not be described again.
- the relay node of any of the above forms needs to send a synchronization signal to the UE or device it serves in order to provide the service correctly.
- the synchronization signal in the NR differs from LTE in that it includes not only the synchronization signal sequence but also the resources of the synchronization signal block SS/PBCH Block at the time of transmission of the radio frame.
- the generation of the synchronization signal sequence mainly depends on the PCI, and a Primary Synchronization Signal (PSS) sequence and a Secondary Synchronization Signal (SSS) sequence can be generated through the PCI.
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- 2-1 and 2-2 are examples of symbol positions of a SS/PBCH Block in a radio frame according to an embodiment of the present application.
- Figure 2-1 shows the symbol position map of the SS/PBCH Block in the 15KHz (Kilo Herz, KHz) and 30KHz subcarrier spacing in the time domain
- Figure 2-2 shows the SS/PBCH Block in the 120KHz and 24KHz subcarrier spacing.
- the symbol position map of the domain shows the time-domain symbol position map of the SS/PBCH Block in 1 ms
- Figure 2-2 shows the time-domain symbol position map of the SS/PBCH Block in 0.25 ms.
- 211 and 221 in Figure 2-1 represent one symbol of 15KHz and 30KHz subcarrier spacing, respectively, for 15KHz subcarrier spacing, 1ms includes 14 symbols, and for 30KHz subcarrier spacing, 1ms includes 28 symbols, no matter how much subcarrier spacing
- a time slot includes 14 symbols. Therefore, for a 15KHz subcarrier interval, 1ms is a time slot, and for a 30KHz subcarrier interval, 1ms includes 2 time slots, that is, the symbol 0-13 in Figure 2-1 is one.
- the time slot, 14-27 is another time slot. Similarly, within 0.125 ms, for 120 KHz, including 2 time slots, for 240 KHz, including 4 time slots.
- two SS/PBCH blocks, 212 and 213, are included in 1 ms, and the sign bit start positions are 2 and 8, respectively.
- the starting position of the symbol bits of each SS/PBCH Block is ⁇ 4, 8, 16, 20 ⁇ , and there are 4 different SS/PBCHs.
- Blocks are 222, 223, 224, 225, respectively.
- the other is that the starting position of the sign bit of each SS/PBCH block is ⁇ 2, 8, 16, 22 ⁇ , and the four different SS/PBCH blocks are 226, 227, 228, 229, respectively.
- each SS/PBCH Block is ⁇ 4, 8, 16, 20 ⁇ , respectively, and 4 different SS/PBCH Blocks are 232, 233, 234, 235, 240KHz, and each SS/PBCH.
- the sign bit positions of the block are ⁇ 8,12,16,20,32,36,40,44 ⁇ , and the 8 different SS/PBCH blocks are 242,243,244,245,246,247,248. , 249.
- Each of the above SS/PBCH Blocks occupies 4 sign bits in the time domain. Since the number of SS/PBCH blocks defined by NR can be 4, 8, 64, the value of L will be different for different subcarrier spacings.
- L For 15KHz and 30KHz subcarrier spacing, the maximum L is 8, for 120KHz and 240KHz. Carrier spacing, L is 64. For 15KHz and 30KHz subcarrier spacing, for bands less than 3GHz (Giga Herz, GHz), L is 4, for bands greater than 3GHz to 6GHz, L is 8, for bands greater than 6GHz, L is 64. Therefore, the value of L can be determined by the frequency band.
- the SS/PBCH Block in 1ms for 15KHz and 30KHz subcarrier spacing is shown in Figure 2-1.
- the SS/PBCH Block in 0.125ms for 120KHz and 240KHz subcarrier spacing is shown in Figure 2-2.
- the transmission is performed according to ⁇ 2, 8 ⁇ + 14*n, where ⁇ 2, 8 ⁇ represents the index of the first symbol of the SS/PBCH Block, that is, the position, the same applies hereinafter, and details are not described herein again.
- ⁇ 2, 8 ⁇ represents the index of the first symbol of the SS/PBCH Block, that is, the position, the same applies hereinafter, and details are not described herein again.
- n 0, 1
- n 0, 1, 2, 3.
- the position of the SS/PBCH block in a synchronization signal period is traversed by the above formula by the above formula, and the same applies hereinafter, and details are not described herein again.
- n 0,1,2,3,5,6,7,8,10,11, 12,13,15,16,17,18.
- n 0,1,2,3,5,6, 7,8,10,11,12,13,15,16,17,18.
- the above is mainly the starting position of the SS/PBCH block in the time domain.
- one SS/PBCH block occupies 4 symbols, and NR specifies that the PSS occupies the zeroth sign bit (the symbol number is from 0 to 3), and the SSS occupies the first
- the second sign bit the PBCH occupies the second and third sign bits.
- the SS/PBCH block occupies a continuous 240 subcarriers (numbered from 0-239) in the frequency domain, the subcarriers occupying the zeroth sign bit of the PSS are 56-182, and 0-55 and 183-239 are set to zero.
- the subcarriers in which the SSS occupies the second sign bit are 56-182, and 48-55 and 183-191 are set to 0.
- Subcarriers 0-47 and 192-239 of the second sign bit, and 0-239 subcarriers of the first and third sign bits are used for transmission of the PBCH.
- the transmission of the synchronization signal also needs to determine the location of the frequency domain resource. Therefore, the synchronization signal information also includes the information of the partial bandwidth (BWP) corresponding to the synchronization signal information, and the relay The node transmits the synchronization signal on a part of the bandwidth according to the information of the partial bandwidth corresponding to the synchronization signal information.
- BWP partial bandwidth
- the relay The node transmits the synchronization signal on a part of the bandwidth according to the information of the partial bandwidth corresponding to the synchronization signal information.
- one or more BWPs can be supported. If there are multiple BWPs, and different BWPs can transmit synchronization signals, then information of the BWP needs to be specified.
- the synchronization signal further includes information of the PBCH
- the information of the PBCH mainly includes at least one of the following information: an index explicit indication (ssb-Index Explicit), a half frame index (halfFrameIndex), a system frame number (systemFrameNumber), and a common subcarrier spacing.
- subCarrierSpacingCommon subcarrier offset
- ssb-subcarrierOffset Demodulation Reference Signal (DMRS) type A position (dmrs-TypeA-Position)
- SIB1 PDCCH configuration pdcchConfigSIB1
- cell blocking cellBarred
- same Frequency cell reselection IntraFreqReselection
- the relay node receives the synchronization signal information sent by the upper node through the air interface, and the synchronization signal information includes at least one of the following information: the subcarrier spacing of the synchronization signal, and the frequency band information of the relay node working.
- the synchronization signal information further includes: a physical cell identifier (PCI), the PCI is used to generate a synchronization signal sequence, and the synchronization signal sequence is transmitted on the synchronization signal resource.
- PCI physical cell identifier
- the frequency band information of the working of the relay node refers to a frequency range in which the communication device operates.
- Frequency Division Duplexing including uplink and downlink frequency bands
- the communication device includes but is not limited to a base station and a relay node. And terminal.
- the frequency band information of the working of the relay node is corresponding by number.
- the frequency band of two Time Division Duplexing is defined in the 3GPP 38.813 protocol: n77 and n78, and the corresponding uplink of n77 (Uplink, The UL) frequency range is 3300MHz-4200MHz, the downlink (DL) frequency range is 3300MHz-4200MHz, the n78 corresponds to the UL frequency range of 3300MHz-3800MHz, and the DL frequency range is 3300MHz-3800MHz.
- the frequency band information of the working of the relay node may be indicated by the number of the frequency band, or may be other methods, such as giving an operating frequency range, which is not limited in this embodiment.
- the relay node can determine the number and location of the SS/PBCH block by including the frequency band information of the relay node operation in the synchronization signal information. For details, refer to the following embodiments.
- the period of the synchronization signal refers to the period of the SS/PBCH Block transmission under the different subcarrier intervals described above, and the SS/PBCH Block transmitted in one SS/PBCH Block period is different.
- the different SS/PBCH Blocks refer to 212 and 213, or 222, 223, 224, 225, etc. as shown in FIG. 2-1, which are not enumerated here, and those skilled in the art should understand that SS/PBCH Block
- the period refers to the interval at which a group of SS/PBCH Blocks are transmitted at the air interface, and one group of SS/PBCH Blocks belongs to the same period. Since the period of the synchronization signal of the NR is configurable, it is necessary to specify the period of the synchronization signal so that the relay node can correctly configure the transmission period of the synchronization signal.
- the layer 3 relay has an independent physical cell identifier PCI, and the relay without the physical cell identifier PCI can be further divided into layer 2 relay and layer 1
- the layer 1 relay mainly amplifies the signal, and there is no higher layer protocol processing, and the high layer protocol refers to the protocol above the MAC layer or the MAC layer.
- the relay mainly includes layer 2 and layer 3 relays, and the layer 2 relay has the function of layer 2 protocol stack, including MAC, RLC, and/or PDCP functions.
- NR implements control and architecture. The bearer separation is usually integrated with the RRC and PDCP functions. Therefore, the Layer 2 trunk mainly includes the MAC and RLC functions.
- the present embodiment does not limit the function placement of the layer 2 protocol stack.
- it may include MAC, RLC, and PDCP, and in some scenarios, only the MAC, RLC, and/or adaptation layers may be included.
- the MAC, the RLC, and the RRC function may be included.
- the MAC, the RLC, the PDCP, and the RRC function are included in the scenario.
- the synchronization signal is different from the Donor node because the PCI and Donor nodes are different.
- the synchronization signal of the relay node is the same as that of the Donor node. It should be understood that the synchronization signal of the relay node here is the same as the Donor node, which means that the PSS, SSS, and PBCH of the synchronization signal are the same, but the Donor node
- the period of the relay node may be different from that of the relay node. Depending on the specific implementation, this embodiment does not impose restrictions.
- the indication information of the synchronization signal acquisition mode is mainly used in the layer 2 relay scenario. If only the Donor node and the relay node support working on the same carrier frequency, and there is no other BWP, the synchronization of the relay node at this time. The signal is exactly the same as the synchronization signal of the Donor node, and the relay node can obtain all the synchronization signal information from the synchronization signal of the Donor node. At this time, the indication information of the synchronization signal acquisition manner is used to indicate whether the synchronization signal information is configured by the network, such as Donor, or is automatically acquired by the relay node from the Donor node synchronization information. It should be understood that if it is an explicit configuration, that is, the synchronization signal information is configured by the network, the indication information of the synchronization signal acquisition manner may not be required.
- the relay node In order to enable the relay node to provide services for the UE, the relay node first needs to obtain the correct synchronization signal information and send it in the air interface.
- the method is: the relay node receives the synchronization signal information sent by the upper node through the air interface, and the synchronization signal
- the information includes at least one of the following information: subcarrier spacing of the synchronization signal, frequency band information of the relay node operation, information of the relay node physical broadcast channel PBCH, period of the synchronization signal, indication information of the synchronization signal acquisition mode, and relay
- the node transmits a synchronization signal according to the information of the synchronization signal.
- the synchronization signal may include a synchronization signal sequence
- the synchronization signal information may further include a physical cell identifier PCI
- the relay node generates a synchronization signal sequence according to the PCI.
- the generation of a specific synchronization signal sequence is generated by a generator polynomial, which should be familiar to those skilled in the art and will not be described again.
- the synchronization signal information further includes partial bandwidth BWP information corresponding to the synchronization signal information, and the relay node transmits the synchronization signal on the partial bandwidth BWP according to the partial bandwidth BWP information corresponding to the synchronization signal.
- the synchronization signal information further includes: a transmission power corresponding to the synchronization signal, and the relay node transmits the synchronization signal by using the transmission power.
- the relay node transmits the synchronization signal information through the air interface, which can effectively reduce the deployment cost and enable rapid deployment.
- the synchronization signal in the NR is different from the traditional LTE synchronization signal, the synchronization signal information is automatically obtained through the air interface, thereby avoiding manual configuration and improving configuration efficiency.
- the NR supports the function of the partial bandwidth BWP, different relay nodes in one cell can work on the same or different BWPs as the Donor node, so as to better adapt to the service requirements of different locations in the cell, therefore,
- the synchronization signal information of the relay node is configured through the air interface, which has greater flexibility and freedom to adapt to the needs of network service changes.
- FIG. 3 is a flowchart of a process for acquiring a synchronization signal and a sending process by a relay node according to an embodiment of the present disclosure.
- the network element included in FIG. 3 has a base station, such as a gNB (Next Generation Node B, gNB), an Access and Mobility Management Function (AMF)/Session Management Function (SMF), and a user plane.
- gNB Next Generation Node B
- AMF Access and Mobility Management Function
- SMF Session Management Function
- UPF User Plane Function
- UPF Unified Data Management
- AUSF Authentication Server Function
- OAM Operations, Administration and Maintenance
- the AMF/SMF is also referred to as a Mobility Management Entity (MME), and the UPF is also referred to as a Serving Gateway.
- MME Mobility Management Entity
- UPF is also referred to as a Serving Gateway.
- S-GW Packet Data Network Gateway
- P-GW Packet Data Network Gateway
- HSS Home Subscriber Server
- the relay node is started, that is, the relay node is powered on and started.
- the relay node performs an attach process as a normal UE during the power-on startup process, and the attach process includes an authentication process, and the authentication process is completed through interaction between the AMF/SMF and the UDM/AUSF.
- the relay node is identified as a relay node.
- the relay node can be attached to the current base station and the network element AMF/SMF of the core network.
- the base station establishes a secure connection to the OAM node according to the APN (Access Point Number, APN) provided by the relay node.
- APN Access Point Number
- the relay node may be connected to the OAM node through the user plane gateway UPF, and the OAM node identifies the identifier of the relay node, when determining After the node is a legal relay node, the OAM node provides initial parameters for the relay node, where the initial parameters include a list of Donor nodes.
- the relay node After the relay node obtains the initial parameters from the OAM node, the base station currently accessed by the relay node may not be the base station in the Donor node list, or the AMF/SMF selected by the currently accessed base station does not support the connection of the relay node. In, then the relay node treats itself as the UE and performs a Detach process to clear the data in the currently accessed base station and AMF/SMF, thereby completing the first phase process, ie, the first phase is relaying
- the node accesses itself as a UE and obtains initial parameters.
- the detachment process is defined by standard protocols, such as the 3GPP 38.501 protocol, and should be well known to those of ordinary skill in the art and will not be described again.
- the relay node performs the second phase process after obtaining the foregoing Donor node list. Since the relay node has obtained the Donor node list, it can perform the attach process itself as a relay node. In this process, the relay node accesses a candidate node in the initial configuration parameters of the first phase, and performs the authentication process to the AMF/SMF and the UDM/AUSF. After the authentication is passed, the Donor node is relayed. The process of establishing a bearer to the control plane of the AMF/SMF. The Donor node establishes a user plane secure channel connection to the OAM node for the relay node so that the relay node can obtain configuration information from the OAM node.
- the OAM node After the relay node is connected to the OAM node, the OAM node further configures the relay node.
- the OAM node configures the relay node to include information such as synchronization signal information and a Cell Global Identifier (CGI), and sends the information to the relay node through the air interface of the Donor node.
- CGI Cell Global Identifier
- the synchronization signal information is as described above and will not be described again.
- the name of CGI may be different in different systems. For example, it is also called Evolved Universal Terrestrial Radio Access Network (CGI, ECGI) in LTE. It should be understood that the field Any changes or substitutions that are easily conceived by a person skilled in the art should fall within the technical scope disclosed in the present embodiment.
- the OAM module of the relay node establishes a connection to the OAM node through IP, and the transmission of its data, such as configuration parameters, is established on the IP layer.
- the relay node If the synchronization signal information includes the indication information of the synchronization signal acquisition mode, and the relay node is instructed to acquire the synchronization signal information through the synchronization signal of the Donor node, the relay node generates the synchronization signal by using the synchronization signal information acquired from the Donor node, and transmits the synchronization signal. There is no need to obtain synchronization signal information from the network.
- the synchronization signal information may include only the indication information of the synchronization signal acquisition mode, and the relay node is instructed to acquire the synchronization signal information from the Donor node, and the synchronization signal information does not include other synchronization signal information parameters, and details are not described herein. .
- step S306 further includes an acknowledgement message after the relay node receives the synchronization signal and the CGI information, that is, sends an acknowledgement message to the network, indicating that the relay node receives the configuration information.
- the OAM configuration information is application layer data above the IP layer, that is, OAM control/configuration data.
- the relay node sends a synchronization signal according to the information of the synchronization signal.
- the UE served by the relay node may select to camp or access to the relay node by sending a synchronization signal to the middle node. If the synchronization signal information only includes the indication information of the synchronization signal acquisition mode, the relay node automatically acquires the synchronization signal information from the Donor node, and generates a synchronization signal and a PBCH information of the relay node according to the acquired synchronization signal information, and performs the air interface in the air interface. send.
- the relay node may also initiate the establishment process of S1 and X2, and the process of updating the bearer configuration and updating the cell information by the Donor node.
- the above process is not shown in Fig. 3, but the establishment process of S1 and X2 exists and will not be described again.
- the OAM node in the above figure is only a functional entity. In this embodiment, only the OAM node is taken as an example. In a future network, the function can be integrated into other nodes, such as AMF/SMF, and this embodiment does not impose constraints. It should be understood that the OAM node may also be any other entity or module having a configuration function, and any changes or substitutions that are easily conceivable by those skilled in the art are within the scope of the present application.
- the relay node may obtain synchronization signal information from the OAM node, thereby generating a synchronization signal according to the synchronization signal information and transmitting, and solving the configuration problem of the relay node synchronization signal information, and the scheme performs synchronization signal information through the OAM node.
- the one-time configuration can simplify the implementation.
- FIG. 4 is a flowchart of obtaining synchronization signal information from a Donor node by a relay node provided by the present application.
- the synchronization information of the Donor node does not need to be configured to the relay node through the OAM node, but is configured to the relay node through Donor. It should be understood that the scenario herein is not limited to layer 2 relay, and layer 3 relay may also be sent to the relay node through the Donor node.
- the method is: the network node sends the synchronization signal information to the relay node through the air interface, where the synchronization signal information includes at least one of the following information: a subcarrier spacing of the synchronization signal, a frequency band information of the working of the relay node, and a physical state of the relay node.
- the method may further include: the network node receiving the synchronization signal information configuration request sent by the operation management and maintenance node, where the synchronization signal information configuration request is used to instruct the network node to send the synchronization signal information to the relay node. Proceed as follows:
- S401-S405 is the same as steps S301-S305 in FIG. 3 and will not be described again.
- the OAM node only configures the CGI for the relay node, and does not perform the configuration of the synchronization signal information.
- the OAM node may control the Donor node to configure the synchronization signal information for the relay node, or the OAM node may control the relay node to actively request the Donor node configuration, or the OAM node indicates the relay node. Automatically obtained from the SS/PBCH block read by the Donor node.
- the configuration parameter sent by the OAM node may include an indication information of the synchronization signal acquisition mode, and the indication information of the synchronization signal acquisition mode is used to indicate the manner in which the relay node acquires the synchronization signal information.
- the synchronization signal information may be obtained by using an OAM node configuration (as shown in FIG. 3), or the Donor node is configured as a relay node, or the relay node actively requests from the Donor node, or the relay node automatically Obtained by reading the SS/PBCH block sent by the Donor node.
- the acquisition mode indication is optional when the synchronization signal information sent by the OAM node to the relay node already includes all the information of the relay node transmitting the synchronization signal.
- the manner of acquiring the synchronization signal information may be determined by using one of the foregoing manners by using a protocol definition manner.
- the indication information of the synchronization signal acquisition manner is not needed.
- the indication information of the manner of acquiring the synchronization signal information may further include PCI or CGI information of the Donor node.
- the indication information of the synchronization signal acquisition manner included in the configuration parameter of the OAM node is usually configured by the OAM node in advance in the system of the OAM node according to the network planning network optimization, or may be other manners, for example, the OAM node is based on the relay node.
- the properties, such as layer 2 nodes or layer 3 nodes, automatically determine configuration parameters. The specific method is not limited in this application.
- the relay node will automatically read the message sent by the Donor node. SS/PBCH block, and obtain synchronization signal information related parameters. At this time, the relay node will skip the step of S407 described below and directly proceed to the synchronization signal transmission process of step S408.
- step S406 above should also include an acknowledgement message after the relay node receives the synchronization signal and the CGI information, that is, sends an acknowledgement message to the network, indicating that the relay node receives the configuration information.
- the configuration information sent by the OAM node is application layer data above the IP layer, that is, OAM control/configuration data.
- the OAM node may instruct the Donor node to send synchronization signal information to the relay node, or indicate the relay.
- the node actively requests the Donor node to send synchronization signal information.
- the relay node and the Donor node are required to interact.
- the synchronization signal information may be encapsulated in an RRC message for transmission, such as an RRC reconfiguration message.
- the OAM node instructs the Donor node to send the synchronization signal information to the relay node, it may indicate that the Donor will send the synchronization signal information to the relay node in the synchronization signal information sent to the relay node, or by means of a protocol definition, the application does not Make a limit.
- the relay node does not need to actively request the Donor node to send the synchronization signal information, and after receiving the configuration information of the OAM node, waits for the receiving Donor node to send the synchronization signal information.
- RRC reconfiguration message only uses the RRC reconfiguration message as an example, and does not limit the use of the RRC reconfiguration message, and may also be an RRC connection reconfiguration message or other RRC configuration message.
- This application only uses a specific message name as an example, and does not limit the use of a specific message. Any change or replacement of any RRC message that is easily conceivable by those skilled in the art is within the scope of the present application, and examples of the latter RRC message. All the same, no longer repeat them.
- step S407 herein includes any of the above two schemes, that is, the Donor node actively performs configuration of synchronization signal information to the relay node, or the relay node actively requests the Donor node to transmit synchronization signal information.
- the OAM node configuration relay node automatically acquires synchronization signal information from the SS/PBCH block transmitted by the Donor node, step S407 is not performed.
- the relay node may also initiate the establishment process of S1 and X2, and the process of updating the bearer configuration and updating the cell information by the Donor node.
- the above process is not shown in Fig. 3, but the establishment process of S1 and X2 exists and will not be described again.
- the relay node can obtain the synchronization signal information from the Donor node, simplify the configuration process, improve the configuration efficiency, and realize fast synchronization signal information acquisition.
- the OAM node may configure synchronization signal information for the relay node in multiple manners. Steps S406 and S407 of FIG. 4 described above differ according to the manner in which the synchronization signal information is configured.
- the OAM node instructs the relay node to automatically obtain the synchronization signal information by sending the SS/PBCH block through the Donor node.
- the following embodiment is only used for the OAM node to instruct the Donor node to configure the synchronization signal information for the relay node, or in the indication.
- the OAM node requests the Donor node to configure the synchronization signal information for the relay node, and after receiving the request of the OAM node, the Donor node sends the synchronization signal information to the relay node through the air interface.
- the steps are as follows:
- the OAM node sends a synchronization signal configuration request to the Donor node, where the synchronization signal configuration request includes an identifier of the relay node, where the identifier may be an IP address, or a CGI, or a MAC address, or any other of the relay node.
- the identification is not limited in this embodiment, and any change or replacement of the identifier of any relay node that is easily conceived by those skilled in the art should fall within the technical scope disclosed in this embodiment.
- the Donor node can obtain the information of the air interface transmission of the relay node, such as the Cell Radio Network Temporary Identifier (C-RNTI), by using the identifier of the relay node.
- C-RNTI Cell Radio Network Temporary Identifier
- the Donor node After receiving the synchronization signal configuration request sent by the OAM node, the Donor node returns a synchronization signal information configuration response message to the OAM node, confirming that the request is received, and continuing to step S503.
- the Donor node sends synchronization signal information to the relay node by using an RRC reconfiguration message. As described above, if the relay node indicates in the synchronization signal information of the received OAM node that Donor will send synchronization signal information to the relay node, or the protocol defines that the Donor node will transmit synchronization signal information, the relay node waits for reception. The Donor node sends synchronization signal information. After receiving the synchronization signal information sent by the Donor node, the relay node proceeds to step S504, and simultaneously performs the step S408 shown in FIG. 4, that is, transmits the synchronization signal. The synchronization signal information is as described above and will not be described again.
- the relay node sends an acknowledgement message to the Donor node, where the acknowledgement message may be an RRC reconfiguration complete message.
- the network actively triggers the transmission of the synchronization signal information, which allows the relay node to acquire the synchronization signal information faster, accelerate the acquisition process of the relay node synchronization signal information, and reduce the air interface signaling overhead.
- steps S406 and S407 of FIG. 4 above may also be that the relay node actively initiates a synchronization signal request to acquire synchronization signal information.
- FIG. 6 is a flowchart of requesting synchronization signal information of a relay node according to an embodiment of the present disclosure. The steps are as follows:
- Steps S601-S602 are the same as steps S501-S502, and are not described again.
- the relay node If the relay node receives the synchronization signal information from the OAM node, the relay node actively initiates a synchronization signal information request to the Donor node, or is a protocol definition, and the relay node actively sends the configuration parameter to the Donor node after receiving the configuration parameter of the OAM node. After the synchronization signal information request is initiated, the relay node sends a synchronization signal information request to the Donor node after receiving the configuration of the synchronization signal information of the OAM node.
- the synchronization signal information request includes an indication of the request synchronization signal, and may also include an identifier of the relay node, and the specific identifier is as described above, and details are not described herein again.
- the synchronization signal information request may be an RRC message or a specific MAC Control Element (CE).
- the Donor node After receiving the synchronization signal information request, the Donor node sends the synchronization signal information to the relay node.
- the synchronization signal information may be carried in an RRC message, such as an RRC reconfiguration message, or may be carried in the MAC CE.
- the synchronization signal information is as described above and will not be described again.
- the relay node After receiving the synchronization signal information, the relay node sends an acknowledgement message to the Donor node to confirm receipt of the synchronization signal information.
- the acknowledgment message may be configured for the synchronization signal, and the synchronization signal configuration may be completed by using an RRC message, such as an RRC reconfiguration complete message, or a MAC CE.
- the above-mentioned synchronization signal information request, synchronization signal information and synchronization signal configuration completion may be part of the RRC parameters, and the RRC message name is given a uniform name.
- the synchronization signal information request is part of the RRC Connection Request message
- the RRC Connection Request is a unified message name that can be used for multiple requests.
- the synchronization signal information is part of the RRC reconfiguration
- the synchronization signal configuration completion is part of the RRC reconfiguration complete message. This is only an example, and does not constitute a limitation on which RRC message the synchronization signal information request, the synchronization signal information, and the synchronization signal configuration completion belong to.
- the relay node After the relay node acquires the synchronization signal information, it performs the same as step S408 shown in FIG. 4, that is, the synchronization signal is transmitted.
- the relay node actively requests the synchronization signal information, and according to the state of the relay node, it can select when to request the transmission of the synchronization signal information, which is more flexible.
- the relay node has completed the parameter configuration of the second phase described above, ie, the synchronization signal has been sent and the UE is served.
- the relay node is restarted, or a Donor node is reselected from the list of Donor nodes provided in step S303 of FIG. 3 or step S403 shown in FIG.
- the re-access to the Donor node can perform the processes of the foregoing first and second phases, as an alternative, it is also possible to directly access the Donor node.
- FIG. 7 is a flowchart of obtaining synchronization signal information by a relay node in an access process according to an embodiment of the present disclosure. Proceed as follows:
- Steps S701-S702 are conventional random access procedures, and since the process is well known to those of ordinary skill in the art, no further details are provided.
- the relay node sends a message 3 to the Donor node, where the message 3 is the third message in the random access process, that is, the message initiated to the Donor node after receiving the random access response.
- Message 3 depends on different purposes, and the content carried may be different. For example, if the UE initiates a service request, message 3 includes an RRC connection setup request message, and if the UE is in the connected state and loses synchronization, message 3 contains data. .
- the relay node needs to acquire the synchronization signal information of the Donor node, the synchronization signal information request may be sent in the message 3.
- the synchronization signal information request is an RRC message, such as an RRC connection request message, and the synchronization signal information request may include an indication of requesting the synchronization signal.
- the identity of the relay node may also be included in the RRC message.
- the identifier of the relay node is as described above and will not be described again.
- the indication of the request synchronization signal is used to notify the Donor node that the relay node needs the Donor node to send synchronization signal information to the relay node.
- the Donor node sends an RRC reconfiguration message to the relay node.
- the RRC reconfiguration message includes indication information of the synchronization signal information or the synchronization signal synchronization signal acquisition manner. If the synchronization signal information is included in the RRC reconfiguration message, the relay node generates the synchronization signal by using the synchronization signal information, and the synchronization signal information is as described above and will not be described again.
- the Donor node can configure the working carrier frequency of the relay node to be the same as Donor.
- the indication information of the synchronization signal acquisition mode may be sent only to the relay node, and the indication information of the synchronization signal acquisition mode indicates that the relay node automatically reads the synchronization signal information from the SS/PBCH block of the Donor node, and uses the read synchronization signal information. Generate a sync signal.
- the Donor node's working carrier frequency is not divided into at least two BWPs
- the Donor node can configure the relay node to operate at a different carrier frequency.
- the Donor node needs The synchronization signal information is configured for the relay node, and the synchronization signal information is as described above, and will not be described again.
- the relay node sends an acknowledgement message to the Donor node, where the acknowledgement message may be an RRC reconfiguration complete message, and acknowledges receipt of the synchronization signal information.
- the relay node sends a synchronization signal according to the received synchronization signal information. If the synchronization signal information received by the relay node indicates that the relay node automatically reads the synchronization signal information from the SS/PBCH block of the Donor node, the relay node acquires the synchronization signal information by reading the SS/PBCH block of the Donor node. And generate a synchronization signal and PBCH, and send.
- the relay node can implement fast access and reduce the service interruption delay through the Donor node, without having to perform the parameter configuration process again through the OAM node, speeding up the startup process and reducing the service interruption delay.
- FIG. 8 is a flowchart of a relay node acquiring synchronization signal information in a contention resolution message according to an embodiment of the present disclosure. Proceed as follows:
- Steps S801-S803 are the same as steps S701-S703 shown in FIG. 7, and are not described again.
- the Donor node sends the synchronization signal information to the relay node in the contention resolution message.
- the synchronization signal information is encapsulated in an RRC reconfiguration message, which is part of a contention resolution message.
- the synchronization signal information is as described above and will not be described again. It should be understood that when the synchronization signal information is encapsulated in the RRC reconfiguration message and transmitted in the contention resolution message, the RRC reconfiguration message should not be used as a content authentication code for Integrity (MAC-). Part of I).
- the synchronization signal information may also include indication information of the synchronization signal acquisition mode, and the indication information of the synchronization signal acquisition mode indicates that the relay node automatically reads the synchronization signal information from the SS/PBCH block of the Donor node, as described above. Said, no longer repeat them.
- the relay node can obtain the synchronization signal information more quickly, thereby accelerating the configuration process.
- FIG. 9 is a flowchart of acquiring synchronization signal information in a two-step random access procedure according to an embodiment of the present application. The steps are as follows:
- the relay node sends a random access preamble to the Donor node.
- the relay node may also carry part of data or signaling in the message that sends the random access preamble. Since it is the first message, the amount of data carried will be very limited. Therefore, only some basic information can be transmitted, such as the identity of the relay node and the indication of the request synchronization signal.
- the indication of the request synchronization signal is used to notify the Donor node to configure synchronization signal information for the relay node.
- the identifier of the relay node is as described above and will not be described again.
- the Donor node After receiving the random access preamble and the data or signaling sent by the preamble, the Donor node sends a random access response to the relay node, or message 2. It should be understood that any change or substitution of the message name is within the scope of the present application.
- the random access response message including the synchronization signal information, the content of the synchronization signal information is as described above, and will not be described again.
- the synchronization signal information may be encapsulated in an RRC reconfiguration message and transmitted together to the relay node via message 2.
- the relay node After receiving the synchronization signal information, the relay node confirms the message to the Donor node, and confirms that the synchronization signal information is received.
- the acknowledgment message is encapsulated in an RRC reconfiguration complete message for transmission. If the synchronization signal information received by the relay node includes all the information for generating the synchronization signal, the following steps of S904 are performed.
- the indication information of the synchronization signal acquisition mode indicates that the relay node automatically reads the synchronization signal information from the SS/PBCH block of the Donor node, and then relays The node obtains the synchronization signal information by reading the SS/PBCH block of the Donor node, as described above, and details are not described herein.
- the relay node receives the synchronization signal information of step S902, or automatically acquires the synchronization signal information according to step S903, and may send the transmission synchronization signal according to the synchronization signal information.
- synchronization signal acquisition can be realized in the two-step random access process, which speeds up the startup process and minimizes the interrupt delay.
- a relay node may be able to connect to multiple optional Donor nodes due to air interface changes or bandwidth changes, in this case, possibly due to the bandwidth of the backhaul link or the backhaul link channel.
- the reason for the change in quality is that the relay node can switch from one Donor node to another Donor node.
- the handover here refers to the handover of the relay node itself, not the handover of the UE under the relay node, and the handover may be initiated by the network or may be caused by the measurement result of the relay node.
- FIG. 10 is a flowchart of a Donor node handover according to an embodiment of the present application. Proceed as follows:
- the source Donor node initiates a handover request to the target Donor node.
- the switch is for the relay node to switch from the source Donor node to the target Donor node.
- the handover request message indicates a handover to be a relay node, and includes an identifier of the relay node. The identifier of the relay node can be as described above and will not be described again.
- the target Donor node may need to re-acquire the security parameters and interact with the AMF/SMF of the core network to obtain new security parameters.
- the process of obtaining the security parameters complies with the protocol specification of the handover process, such as the 3GPP 23.501 protocol, and will not be described again.
- the target Donor node sends a handover response message to the source Donor node, where the handover response message includes synchronization signal information of the target Donor node, and the synchronization signal information is as described above, and details are not described herein.
- the handover response message includes synchronization signal information of the target Donor node, and the synchronization signal information is as described above, and details are not described herein.
- other handover information is also included, such as a C-RNTI configured for the relay node, a dedicated access preamble, and an access time-frequency resource, so that the relay node can access the target Donor node.
- the target Donor node may directly send the synchronization signal information to the relay node through the original Donor node in the handover response message, or may notify the relay node to automatically acquire from the target Donor node by using the indication information of the synchronization signal acquisition manner, depending on the Donor. Node, this application does not impose restrictions.
- the synchronization signal information is encapsulated in a transparent container and sent to the source Donor node as part of the handover response message.
- the transparency may be one, such as an RRC connection reconfiguration message, and the synchronization signal information may be part of an IE (Information Element) of the RRC connection reconfiguration message.
- the IE may be reconfigurationWithSync, or mobilityControlInformation.
- the source Donor node does not parse the transparent container, but forwards the transparent container to the relay node, that is, the RRC connection reconfiguration message is directly forwarded to the relay node. It should be understood that this is just an example, and may be other IEs, and even other RRC messages, which are not limited.
- the source node After receiving the handover response message of the target Donor node, the source node does not parse the transparent container, but forwards the transparent container to the relay node, that is, the RRC connection reconfiguration message is directly forwarded to the relay node.
- the relay node acquires synchronization signal information therein.
- the relay node After receiving the RRC connection reconfiguration message (ie, a transparent container) of the target Donor node, the relay node uses the random access parameter therein to perform access at the target Donor node.
- the access process may be a contention-based access process or a non-competitive access process. This process is familiar to those of ordinary skill in the art and will not be described again.
- the synchronization signal information obtained in the above step S1003 includes the indication information of the synchronization signal acquisition mode, and indicates that the relay node automatically obtains the synchronization signal information from the target Donor node, the synchronization signal information is acquired in the process of accessing the target Donor node.
- the specific synchronization signal information is as described above and will not be described again.
- the relay node After accessing the target Donor node, the relay node sends an acknowledgement message to the target cell, where the acknowledgement message may be a connection reconfiguration complete message. After receiving the connection reconfiguration complete message, the target Donor node requests the core network node to modify the route, so that the data sent to the relay node is sent to the target Donor node, and the data forwarded by the source Donor node is received. This process is the same as the traditional switching process, and will not be described again.
- the relay node can switch to the target Donor node and acquire synchronization signal information from the target Donor node as a cell or node under the target Donor node.
- the relay node After receiving the synchronization signal information sent by the target Donor node through the RRC message, the relay node generates a synchronization signal and transmits the information in the air interface. The relay node completes the handover of the target Donor node from the source Donor node, and provides a service for the terminal as a cell or node under the target Donor node.
- the Donor node can be dynamically changed according to the service change situation of the relay node and the backhaul link, and the synchronization signal information is acquired through the handover process, thereby simplifying the signaling process.
- the configured synchronization signal information when the Donor node performs the configuration of the synchronization signal information for the relay node, the configured synchronization signal information further includes the transmission power of the synchronization signal, and further, the synchronization signal information may further include the synchronization signal/physical.
- Each SS/PBCH block can use the same transmission power or different transmission power.
- the SS/PBCH block can use the same transmission power, and the other SS/PBCH block uses different transmission power.
- the main reason is that the SS/PBCH block of the NR is time-divisionally transmitted in all directions in the form of a beam.
- each SS/PBCH block has a corresponding transmission power, and the transmission power of some SS/PBCH blocks is different from the transmission power of other SS/PBCH blocks.
- the synchronization signal refers to a general term for all SS/PBCH blocks transmitted during the period of one synchronization signal
- the SS/PBCH block refers to the PSS transmitted on a specific time-frequency resource within one cycle of the synchronization signal.
- SSS and PBCH A plurality of SS/PBCH blocks constitute a synchronization signal.
- the time-frequency resources occupied by the SS/PBCH block are as described in Figure 2-1 and Figure 2-2, and are not described here.
- the transmit power of the Donor node on different SS/PBCH blocks can be configured to meet different coverage requirements or control the coverage of the relay node.
- the relay node receives the identifier of another relay node sent by the upper node and the synchronization signal information of the other relay node, and identifies the identifier of the another relay node and the other
- the synchronization signal information of one relay node is forwarded to the other relay node.
- the message sent by the relay node to the another relay node may further include a correspondence between the identifier of the relay node and the synchronization signal information.
- multi-hop relay will be supported. When there is a multi-hop relay under the Donor node, sometimes one or more other relay nodes exist between the relay node (or called the target relay node) that needs to be configured and the Donor.
- the Donor node when the Donor node is configured for the relay node, the configured information needs to be forwarded through the intermediate relay node to reach the target relay node.
- the synchronization signal information may change.
- one or more relay nodes under the Donor node are required. Reconfiguring, and the information of the synchronization signal of the one or more relay nodes may be different from the information of the synchronization signals of other relay nodes, for example, the transmission power of the SS/PBCH block is different, therefore, it is necessary for this one Or multiple relay nodes to configure.
- FIG. 11 is a flowchart of a synchronization signal configuration with a multi-level relay node according to an embodiment of the present application.
- the figure includes two relay nodes, which are a first relay node and a second relay node, respectively, wherein the first relay node is a superior node of the second relay node. It should be understood that other relay nodes may also be included, and the relay nodes have a superordinate relationship. Proceed as follows:
- the Donor node sends an RRC reconfiguration message to the lower-level relay node, where the identifier of the relay node is included, and the synchronization signal information corresponding to the identifier of the relay node, that is, the identifier of the relay node and the synchronization signal information have a corresponding relationship.
- the Donor node may actively initiate the reconfiguration process of the synchronization signal information, or may be a configuration process in which the Donor sends the synchronization signal information due to the joining of one of the following relay nodes.
- the reconfiguration of the synchronization signal information initiated by the Donor node herein may be triggered by other nodes, or may be triggered by the network, which is not limited in this embodiment.
- the first relay node After receiving the RRC reconfiguration message, the first relay node first determines whether the synchronization signal information in the RRC reconfiguration message is sent to itself, for example, the first relay node acquires the relay node in the RRC reconfiguration message. If the identifier is included, the synchronization signal information of the first relay node in the RRC reconfiguration message is obtained, and step S1141 is performed to return an RRC reconfiguration complete message to the Donor node. After the first relay node acquires its own synchronization signal information in step S1102, a new synchronization signal may be generated according to the synchronization signal information, and transmitted in an air interface.
- the synchronization signal information of the node is forwarded to another relay node.
- the forwarded RRC reconfiguration message may include synchronization signal information of a plurality of other relay nodes.
- the RRC reconfiguration message further includes an identifier of another relay node and another Corresponding relationship of the synchronization signal information of the relay node, that is, the identifier of the another relay node and the synchronization signal information of the another relay node are sent in the same message, and the identifier of the another relay node is
- the synchronization signal information of the other relay node has a corresponding relationship. It is assumed here that each relay node knows all subordinate relay nodes and their routes, that is, the topology relationship of all subordinate relay nodes.
- the RRC reconfiguration message sent by the Donor to the first relay node includes the identifier of the first relay node, the identifier of the first relay node and its corresponding synchronization signal information should not be included when forwarding. .
- the first relay node determines to forward the RRC reconfiguration message, and then sends an RRC reconfiguration message to another relay node, that is, the second relay node.
- the second relay node After receiving the RRC reconfiguration message, the second relay node performs the same check in S1102. If the identifier of the own relay node is included, step S11042 is performed to send an RRC reconfiguration complete message to the Donor node.
- the first relay node finds that the RRC reconfiguration message includes the identifier of another relay node, and the other relay node is the next node of the relay node, the first intermediate node determines that it needs to go to another intermediate level.
- the node forwards the RRC reconfiguration message. It is assumed here that the first relay node knows all the subordinate relay nodes and their routes, that is, the topology relationship of all the subordinate relay nodes. If the first relay node does not know all the subordinate relay nodes and their routes, the first relay node may find that the RRC reconfiguration message includes the identifier of another relay node, and the identifier of the other relay node is not the first relay. The direct subordinate node of the node, the first relay node directly sends an RRC reconfiguration message containing another relay node to its direct subordinate relay node.
- the Donor node sends the RRC reconfiguration message including the identifier of the first relay node
- the first relay node sends an acknowledgement message to the Donor node
- the acknowledgement message may be an RRC reconfiguration complete message
- the message The identifier of the first relay node is included.
- the second relay node returns an RRC reconfiguration complete message, where the message includes the identity of the second relay node.
- the first relay node waits for an RRC reconfiguration complete message of its subordinate relay node, and synthesizes a RRC reconfiguration complete message of all nodes into a message to the Donor node.
- the above embodiment is also applicable to the scenario where the Donor node reconfigures the synchronization signal.
- the synchronization signal of one node is reconfigured, a synchronization indication is included in the synchronization signal information, and the reconfiguration indication corresponds to the identifier of the relay node.
- synchronization signal information configuration or reconfiguration can be configured for multiple relay nodes at the same time. Especially when the Donor synchronization signal changes, the Donor node can update the synchronization signal information of multiple relay nodes at one time. Avoid separate configuration of each relay node, saving signaling overhead.
- the synchronization signal information further includes BWP information corresponding to the synchronization signal information, and the relay node sends the synchronization signal on the BWP according to the BWP information corresponding to the synchronization signal information.
- a relatively large carrier frequency is divided into different bandwidth parts, that is, each BWP belongs to a carrier frequency and occupies a part of the bandwidth of the carrier frequency.
- Different BWPs can have different Numerology, that is, different subcarrier spacings can be used, and different BWPs can independently transmit SS/PBCH blocks. The SS/PBCH block of each BWP transmission may be different.
- the transmission power of each SS/PBCH block may be different. Therefore, the synchronization signal information should include the information of the BWP, that is, which BWP the synchronization signal information corresponds to, and the relay After the node generates a synchronization signal according to the synchronization signal information, it transmits on the corresponding BWP.
- the synchronization signal can be configured for different BWPs.
- different BWPs can be used to support different types of services, and different locations may be due to geographical locations. The difference is also in the business. Therefore, configuring the relay node on different BWPs can enable the Donor node to flexibly support different services in different locations of a cell.
- the Numerology can be configured to adapt to the service.
- the relay node can work on different BWPs with Donor. Therefore, the synchronization signal information will be different.
- This method enhances the service adaptation and adjustment capabilities of the NR network. Optimize network bandwidth to accommodate business deployment.
- the synchronization signal information can be transmitted through an RRC message.
- the RRC message structure including the synchronization signal information can be as follows:
- physCellIdPart1 is the first part of PCI, and the value ranges from 0-335 (including 0 and 335).
- physCellIdPart2 is the second part of PCI, with values ranging from 0-2 (including 0 and 2).
- the numerologyParm is used to determine the subcarrier spacing.
- the specific value refers to 38.211. It can be understood by those skilled in the art that the value of the corresponding Numerology is different from different SS/PBCH blocks.
- freqIndex is used to specify the frequency band information of the working of the relay node, which is indicated by an index. The above is just an example, and the specific value is defined according to the protocol.
- the ssPeriod is the transmission period of the SS/PBCH block. The definition of the period has been described in the foregoing embodiment, and will not be described again.
- PhysBroadcastCh is the configuration information of the PBCH. It should be understood that the PBCH and the MIB (Master Information Block (MIB) defined in the 3GPP 38.331 protocol have certain differences.
- the PBCH here is mainly used to determine some initialization parameters, and some dynamic The parameters do not need to be transmitted, and the relay node can be obtained from the Donor node. Therefore, the PBCH is different from the MIB defined in the 3GPP 38.331 protocol, and some or all of the parameters can be selected as needed.
- PBCH parameters refer to the MIB information in 38.331.
- the transmission power of each SS/PBCH block, the index information of the BWP, the identifier of the relay node, and the indication information of the synchronization signal acquisition manner may be included.
- the parameters in the RRC message of the synchronization signal information in this embodiment may be configured according to different scenarios, that is, some parameters are available. Selected. For example, if the Donor node instructs the relay node to automatically acquire synchronization signal information from the synchronization signal of the Donor node, it may include only the indication information ssAcquiringWay of the synchronization signal acquisition mode; and in the case of layer 2 relay, especially in support In the scenario of different BWPs, you can configure the subcarrier spacing, the half frame index information in the PBCH, the DMRS information, and the BWP index information.
- the specific configuration of the specific synchronization signal information can be flexibly configured as needed. Any changes or substitutions that may occur to one of ordinary skill in the art are within the scope of the present application. It should be understood that if the OAM node performs synchronization signal information configuration on the relay node, the transmission format may be different from the foregoing RRC message format, but the content is the same and will not be described again.
- each parameter may be transmitted in a format of type, length, and value, for example, using a type code.
- the length indicates the length corresponding to the value of the type code, usually expressed in bytes or bits, and the value is the size of the specific configured value, such as the value of physCellIdPart1. It is 99. It should be understood that this is just an example and does not limit the configuration of the fields of the synchronization signal information.
- the specific representation of the type, length, and value of each field depends on the protocol definition and will not be described again.
- each network element such as a relay node, a Donor node, and an OAM node
- each network element includes hardware structures and/or software modules corresponding to each function in order to implement the above functions.
- the present application can be implemented in a combination of hardware or hardware and computer software in conjunction with the network elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
- the embodiment of the present application may divide the function module into the relay node and the Donor node according to the foregoing method example.
- the function module may be divided into individual function modules, or two or more functions may be integrated into one processing module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
- FIG. 12 is a schematic diagram of a possible structure of a relay device involved in the foregoing embodiment provided by the present application.
- a relay node is also referred to as a relay device.
- the relay device 1200 includes at least a receiving unit 1210, a processing unit 1240, and a transmitting unit 1220.
- the receiving unit 1210 is configured to receive synchronization signal information that is sent by the upper node through the air interface, where the synchronization signal information includes at least one of the following information: a subcarrier spacing of the synchronization signal, frequency band information of the relay node, and a physical broadcast channel of the relay node.
- the receiving unit 1210 is further configured to receive the identifier of another relay device sent by the upper node and the synchronization signal information of the other relay device; the sending unit 1220 is configured to use the identifier of the another relay device and the another The synchronization signal information of the device is forwarded to the other relay device.
- the processing unit 1240 may further include a synchronization signal acquisition module 1241 and a synchronization signal generation module 1242.
- the synchronization signal acquisition module 1241 is configured to send a synchronization signal request to the upper node to request acquisition of synchronization signal information of the relay device.
- the synchronization signal request may include an indication of requesting synchronization signal information, and the identity of the relay device may also be transmitted together with the synchronization signal request.
- the synchronization signal acquisition module 1241 can also be configured to acquire synchronization signal information sent by the OAM node.
- the synchronization signal generating module 1242 may generate parameters required for the physical layer to send the synchronization signal according to the synchronization signal information obtained by the synchronization signal acquisition module, and the parameters required for the physical layer to send the synchronization signal may include the BWP index and the bandwidth, the transmission power, the DMRS, and the PSS. Related parameters, related parameters of SSS, and related parameters of PBCH.
- the relevant parameters of the PSS include physCellIdPart2 (ie, the synchronization signal group to which the PSS belongs); the relevant parameters of the SSS include physCellIdPart1; the relevant parameters of the PBCH include at least one of the following information: ssb-Index Explicit, field index, subcarrier spacing The subcarrier offset, the DMRS location, the configuration of the physical PDCCH of the SIB1, the cell prohibition access indication, the cell frequency selection indication, etc., and the specific parameters are not described above.
- the relay device 1200 may further include a baseband processing unit 1230 for performing baseband processing on the synchronization signal parameters of the synchronization signal generating module 1242, and transmitting by the transmitting unit 1220, and also for receiving from the upper node (for example, the Donor node).
- the obtained synchronization signal information is subjected to baseband processing to acquire synchronization signal information of the relay device.
- the baseband processing unit 1230 is further configured to process the synchronization signal of the relay device, and send the obtained synchronization signal information to the synchronization signal acquisition module 1241.
- the above baseband signal processing mainly includes channel coding and baseband signal modulation. Different air interface technologies, the baseband processing process will be different.
- the baseband processing of LTE or NR mainly includes the processes of resource demapping, de-precoding, demodulation, channel decoding, and descrambling.
- the bit stream is obtained by baseband processing, and if the data needs to be sent to the higher layer for processing, it is handed over to the processing unit 1240.
- the baseband processing unit can also process the data stream from the upper layer.
- the baseband processing of LTE or NR mainly includes: scrambling, channel coding, modulation, layer mapping and precoding, resource mapping, and inverse Fourier transform.
- the baseband signal stream is formed and sent to the transmitting unit for transmission. It should be understood that the foregoing process of receiving and transmitting the baseband is only an example, and is not limited to the embodiment.
- the baseband processing is familiar to those skilled in the art and will not be described again.
- the processing unit 1240 can be implemented by one or more processors, and the baseband processing unit 1230 can be implemented by a baseband processor.
- the processor and baseband processor can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic device, hardware component, etc., or any combination thereof.
- the processor and the baseband processor may be separate chips or may be integrated to form one chip.
- the relay device 1200 may further include an antenna 1201.
- the antenna 1201 may be part of the receiving unit 1210 and the transmitting unit 1220, or may be separate from the receiving unit 1210 and the transmitting unit 1220, as an independent The device is present.
- the receiving unit 1210 is configured to process the received radio frequency signal.
- the receiving unit 1210 may include a radio frequency front end circuit and a radio frequency receiving circuit. It should be understood that the receiving unit 1210 in FIG. 12 is only an example, and the receiving unit 1210 may also include other units or interfaces and the like.
- the above RF front-end circuit mainly includes a filter and an amplifier, and is used for filtering and amplifying the signal received by the antenna and transmitting the signal to the RF receiving circuit.
- the RF receiving circuit it is mainly used for mixing, filtering, power amplifier, analog-to-digital conversion, etc. of the signal outputted by the RF front-end circuit to form a signal suitable for processing by the baseband processing unit 1230.
- the signals received by the relay node from other nodes or devices are transmitted to the baseband processing unit 1230 through the processing of the receiving unit 1210.
- the transmitting unit 1220 includes a radio frequency transmitting circuit and a radio frequency front end circuit. It should be understood that the transmitting unit in FIG. 12 may also include other units or interfaces in a specific implementation.
- the radio frequency transmitting circuit may be an inverse process of processing the signal by the radio frequency receiving circuit, and is mainly used to implement conversion of the baseband signal to the high frequency signal.
- the radio frequency transmitting circuit may include digital-to-analog conversion, mixing, filtering, and power amplifier.
- the processing of the signal by the RF front-end circuit may also be an inverse process of the signal processing by the RF front-end circuit, for example, amplifying, filtering, etc. the signal, and transmitting the processed signal through the antenna 1201.
- the signals that the processing unit 1240 of the relay node needs to transmit to other nodes, terminals, or devices are transmitted through the antenna 1201 after being processed by the transmitting unit 1220.
- the receiving unit 1210 and the transmitting unit 1220 may share one or more antennas. It should be understood that there may be multiple antennas in a wireless network to implement multiple input multiple output techniques to increase system throughput. The figure is only an illustration, but does not limit the number of antennas.
- the receiving unit 1210 may be a receiver
- the sending unit 1220 may be a transmitter
- the receiver and the transmitter may constitute a communication interface.
- the communication interface may also include other physical interfaces, such as a configuration interface, for configuring the relay node by wired connection, including configuration of synchronization signal information.
- the receiver and the transmitter may include only the radio frequency receiving circuit and the radio frequency transmitting circuit, and the radio frequency front end circuit in the receiving unit 1210 and the radio frequency front end circuit in the transmitting unit 1220 may be implemented in another independent device, and the radio frequency receiving is performed.
- the circuit and the RF transmitting circuit are integrated in one chip to form a radio frequency transceiver.
- the communication interface includes a RF front end circuit and a RF transceiver circuit, and a coupling between the RF front end circuit and the RF transceiver.
- the communication interface can also include other interfaces, such as a configuration interface.
- the receiver and transmitter can also include the transceiver interface of other modules.
- the receiver and transmitter are physical RF transceiver circuits, receivers and transmitters. It is only a name and can exist in multiple modules. It can be implemented in software or in hardware. This application does not impose restrictions.
- the relay device described above may further include a storage unit 1250 (eg, a memory) for storing the code required by the processing unit 1240 and/or the baseband processing unit 1230.
- a storage unit 1250 eg, a memory
- the functions of the aforementioned processing unit 1240 or baseband processing unit 1230 may be implemented when processing unit 1240 or baseband processing unit 1230 executes the code in the memory.
- FIG. 13 is a schematic diagram of a possible structure of a network device involved in the foregoing embodiment provided by the present application.
- the network device 1300 includes at least: the identifier of the relay node and the synchronization signal information request may be received in the same message.
- the processing unit 1340 is configured to generate synchronization signal information of the relay node, where the synchronization signal information includes at least one of the following information: a subcarrier spacing of the synchronization signal, frequency band information of the relay node, and a physical state of the relay node.
- the receiving unit 1310 is further configured to receive a synchronization signal information request sent by the relay node, where the synchronization signal information request is used to request the network device to send the synchronization signal information of the relay node to the relay node.
- the receiving unit 1310 is further configured to receive a synchronization signal information configuration request sent by the operation management and maintenance node, where the synchronization signal information configuration request is used to instruct the network node to send the synchronization signal information of the relay node to the relay node; and the processing unit 1340 uses The synchronization signal information of the relay node is generated according to the synchronization signal information configuration request.
- the processing unit 1340 may further include a synchronization signal information configuration module 1341, configured to process the synchronization signal information request sent by the relay node, and determine synchronization signal information for the relay node that sends the synchronization signal request. Determining the synchronization signal information includes: according to the location of the relay node, or the service distribution of the current cell, such as a certain location service congestion, determining that the relay node is configured to work on a certain BWP; The node is configured to work on the same carrier frequency or BWP as the Donor node. After determining the BWP or carrier frequency of the relay node, the processing unit 1340 generates synchronization signal information for the relay node, and responds to the synchronization signal information request sent by the relay node.
- a synchronization signal information configuration module 1341 configured to process the synchronization signal information request sent by the relay node, and determine synchronization signal information for the relay node that sends the synchronization signal request.
- the processing unit 1340 is further configured to process the synchronization signal information configuration request from the OAM node, generate synchronization signal information for the relay node according to the indication information of the synchronization signal acquisition manner, and configure synchronization signal information from the OAM node. Request a response. If the indication information of the synchronization signal acquisition manner included in the synchronization signal information configuration request sent by the OAM node indicates that the network device 1300 actively sends the synchronization signal information to the relay node, the processing unit 1340 generates synchronization signal information for the designated relay node, and It is transmitted through the transmitting unit 1320.
- the processing unit 1340 is further configured to acquire an identifier of the relay node, where the sending unit 1320 is configured to transmit the identifier of the relay node to the relay node together with the synchronization signal information of the relay node, so that the relay node is configured according to the The identifier of the relay node acquires synchronization signal information of the relay node.
- the network device 1300 may further include a baseband processing unit 1330 configured to perform baseband signal processing on the synchronization signal information to be transmitted (such as the synchronization signal information to be sent by the synchronization signal information configuration module 1341), and transmit the signal through the sending unit 1320,
- the baseband signal processing is performed on the synchronization signal information request message received from the relay node, and the result of the baseband signal processing is transmitted to a higher layer, such as the synchronization signal information configuration module 1341.
- the above baseband signal processing mainly includes channel coding and baseband signal modulation. Different air interface technologies, the baseband processing process will be different.
- the baseband processing of LTE or NR mainly includes the processes of resource demapping, de-precoding, demodulation, channel decoding, and descrambling.
- the bit stream is obtained by baseband processing, and if the data needs to be sent to the higher layer for processing, it is handed over to the processing unit 1340.
- the baseband processing unit 1330 can also process the data stream from the processing unit 1340.
- the baseband processing of LTE or NR mainly includes: scrambling, channel coding, modulation, layer mapping and precoding, resource mapping, and inverse Fourier transform, and the baseband signal stream is sent to the transmitting unit 1320 for transmission. It should be understood that the foregoing process of receiving and transmitting the baseband is only an example, and is not limited to the embodiment. The baseband processing is familiar to those skilled in the art and will not be described again.
- the processing unit 1340 can be implemented by one or more processors, and the baseband processing unit 1330 can be implemented by a baseband processor.
- the processor and baseband processor can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic device, hardware component, etc., or any combination thereof.
- the processor and the baseband processor may be separate chips or may be integrated to form one chip.
- the network device 1300 may further include an antenna 1301. It should be understood that the antenna 1301 may be part of the receiving unit 1310 and the transmitting unit 1320, or may be separate from the receiving unit 1310 and the transmitting unit 1320 as an independent The device is present.
- the receiving unit 1310 is configured to process the received radio frequency signal.
- the receiving unit 1310 includes a radio frequency front end circuit and a radio frequency receiving circuit. It should be understood that the receiving unit 1310 in FIG. 13 is only an example, and the receiving unit 1310 may also include other units or interfaces and the like. In the hardware implementation, the radio frequency front end circuit and the radio frequency receiving circuit of the receiving unit 1310 are as described in the foregoing FIG. 12 and will not be described again.
- the receiving unit 1310 is further configured to receive a message from another network element, such as an OAM node.
- the signals received by the network node from the relay device are transmitted to the baseband processing unit 1330 through the processing of the receiving unit 1310, or the other interfaces of the receiving unit 1310 receive information from other network elements, such as OAM nodes.
- the transmitting unit 1320 includes a radio frequency transmitting circuit and a radio frequency front end circuit. It should be understood that the transmitting unit 1320 in FIG. 13 may also include other units or interfaces in a specific implementation. The basic functions of the above-mentioned radio frequency transmitting circuit and radio frequency receiving circuit are as described above and will not be described again.
- the signals that the processing unit 1340 of the network device needs to send to other relay devices and terminals are sent through the antenna 1301 after being processed by the sending unit 1320; or the processing unit 1340 of the network device passes the sending unit.
- Other interfaces of the 1320 send messages to other network elements, such as OAM nodes.
- the sending unit 1320 is further configured to send the identifier of the another relay node and the synchronization signal information of the another relay node to the relay node, so that the relay node identifies the identifier of the another relay node and the The synchronization signal information of the other relay device is sent to the other relay node.
- the receiving unit 1310 and the transmitting unit 1320 may share one or more antennas. It should be understood that there may be multiple antennas in a wireless network to implement multiple input multiple output techniques to increase system throughput. The figure is only an illustration, but does not limit the number of antennas.
- the receiving unit 1310 may be a receiver
- the sending unit 1320 may be a transmitter
- the receiver and the transmitter may constitute a communication interface.
- the communication interface may also include other physical interfaces, such as an interface to communicate with the core network, for connecting to other network elements, such as gateway devices, by wire.
- the receiver and the transmitter may include only the radio frequency receiving circuit and the radio frequency transmitting circuit, and the radio frequency front end circuit in the receiving unit 1310 and the radio frequency front end circuit in the transmitting unit 1320 may be implemented in another independent device, and the radio frequency receiving is performed.
- the circuit and the RF transmitting circuit are integrated in one chip to form a radio frequency transceiver.
- the communication interface includes a RF front-end circuit and a RF transceiver, and a coupling between the RF front-end circuit and the RF transceiver.
- the communication interface may also include other wired interfaces such as an Ethernet interface and a fiber interface. It should be understood that the communication interface should not be simply understood as just a radio frequency interface.
- the receiver and transmitter can also include the transceiver interface of other modules. Here is just a physical example to illustrate the receiver and transmitter, but it should not be understood that the receiver and transmitter are physical RF transceivers, receivers and transmitters. It is only a name and can exist in multiple modules. It can be implemented in software or in hardware. This application does not impose restrictions.
- the network device may further include a storage unit 1350 (eg, a memory) for storing the code required by the processing unit 1340 and/or the baseband processing unit 1330.
- a storage unit 1350 eg, a memory
- the functions of the aforementioned processing unit 1340 or baseband processing unit 1330 may be implemented when the processing unit 1340 or the baseband processing unit 1330 executes the code in the memory.
- a readable storage medium stores computer execution instructions, when a device (which may be a single chip microcomputer, a chip, etc.) or a processor executes FIG. 3-11. In the step of transmitting the synchronization signal in the relay node or the Donor node, the computer execution instruction in the storage medium is read.
- the aforementioned readable storage medium may include various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.
- a computer program product comprising computer executed instructions stored in a computer readable storage medium; at least one processor of the device may be The step of reading the storage medium reads the computer execution instruction, and the at least one processor executing the computer execution instruction to cause the device to implement the relay node and the Donor node in the transmission method of the synchronization signal provided in FIG. 3 to FIG.
- a communication system including at least a relay node, a Donor node.
- the relay node may be the relay node provided in FIG. 12, and is used to perform the steps of the relay node in the sending method of the synchronization signal provided in FIG. 3 to FIG. 11; and/or, the Donor node may be the FIG.
- the network device provided, and the steps performed by the network node in the method of transmitting the synchronization signal provided by FIGS. 3-11.
- the communication system may include a plurality of relay nodes, and the Donor node may simultaneously configure the synchronization signal information for the plurality of relay nodes.
- the synchronization signal may be generated according to the synchronization signal information, and the information of the PBCH may be determined, and the synchronization signal is performed on the resource specified by the SS/PBCH block. Sending solves the problem of configuring the synchronization signal information when the relay node starts.
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Abstract
Description
Claims (46)
- 一种发送同步信号的方法,其特征在于,包括:中继节点接收上级节点通过空口发送的同步信号信息,所述同步信号信息包括以下信息中的至少一种:同步信号的子载波间隔、所述中继节点工作的频带信息、所述中继节点物理广播信道的信息、同步信号的周期、同步信号获取方式的指示信息;所述中继节点根据所述同步信号的信息发送同步信号。
- 如权利要求1所述的方法,其特征在于,所述方法还包括:所述中继节点向所述上级节点发送同步信号信息请求,以请求获取所述中继节点的同步信号信息。
- 根据权利要求1或2所述的方法,其特征在于,所述同步信号包括同步信号序列,所述同步信号信息还包括:物理小区识别符PCI,所述中继节点根据所述PCI生成所述同步信号序列。
- 根据权利要求1-3所述的方法,其特征在于,所述同步信号信息还包括所述同步信号信息对应的部分带宽的信息,所述中继节点根据所述同步信号信息对应的部分带宽的信息在所述部分带宽上发送所述同步信号。
- 根据权利要求1-4任一项所述的方法,其特征在于,所述同步信号信息还包括:所述同步信号对应的发送功率,所述中继节点采用所述发送功率发送所述同步信号。
- 根据权利要求1-5任一项所述的方法,其特征在于,所述方法还包括:所述中继节点接收所述上级节点发送的所述中继节点的标识,并根据所述中继节点的标识获取所述中继节点的所述同步信号信息。
- 根据权利要求1-6任一项所述的方法,其特征在于,所述方法还包括:所述中继节点接收所述上级节点发送的另一个中继节点的标识和另一个中继节点的同步信号信息,并将所述另一个中继节点的标识以及所述另一个中继节点的同步信号信息转发给所述另一个中继节点。
- 一种发送同步信号信息的方法,其特征在于,包括:网络节点通过空口向中继节点发送同步信号信息,所述同步信号信息包括以下信息中的至少一种:同步信号的子载波间隔、所述中继节点工作的频带信息、所述中继节点物理广播信道的信息、同步信号的周期、同步信号获取方式的指示信息;所述网络节点接收中继节点发送的确认消息。
- 根据权利要求8所述的方法,其特征在于,所述方法还包括:所述网络节点接收所述中继节点发送的同步信号信息请求,所述同步信号信息请求用于请求所述网络节点向所述中继节点发送所述中继节点的所述同步信号信息。
- 根据权利要求8或9所述的方法,其特征在于,所述方法还包括:所述网络节点接收运行管理和维护节点发送的同步信号信息配置请求,所述同步信号信息配置请求用于指示所述网络节点向所述中继节点发送所述同步信号信息。
- 根据权利要求8-10任一项所述的方法,其特征在于,所述同步信号信息还包括:物理小区识别符PCI,以使所述中继节点根据所述PCI生成同步信号序列。
- 根据权利要求8-11任一项所述的方法,其特征在于,所述同步信号信息还包括所述同步信号信息对应的部分带宽的信息,以使所述中继节点根据所述同步信号信息对应的部分带宽的信息在所述部分带宽上发送所述同步信号。
- 根据权利要求8-12任一项所述的方法,其特征在于,所述同步信号信息还包括:所述同步信号对应的发送功率。
- 根据权利要求8-13任一项所述的方法,其特征在于,所述方法还包括:所述上级节点将所述中继节点的标识与所述同步信号信息一起发送给所述中继节点,以使所述中继节点根据所述中继节点的标识获取所述中继节点的同步信号信息。
- 根据权利要求8-13任一项所述的方法,其特征在于,所述方法还包括:所述网络节点将另一个中继节点的标识与所述另一个中继节点的同步信号信息发送给所述中继节点,以使所述中继节点将所述另一个中继节点的标识以及所述另一个中继节点的同步信号信息转发给所述另一个中继节点。
- 一种中继设备,其特征在于,包括:接收单元,用于接收上级节点通过空口发送的同步信号信息,所述同步信号信息包括以下信息中的至少一种:同步信号的子载波间隔、所述中继设备工作的频带信息、所述中继设备物理广播信道的信息、同步信号的周期、同步信号获取方式的指示信息;处理单元,用于根据所述同步信号信息生成同步信号;发送单元,用于发送所述处理器生成的同步信号。
- 根据权利要求16所述的中继设备,其特征在于,所述同步信号为同步信号序列,所述同步信号信息还包括:物理小区识别符PCI,所述处理单元用于根据所述PCI生成所述同步信号序列。
- 根据权利要求16或17所述的中继设备,其特征在于,所述同步信号信息还包括所述同步信号信息对应的部分带宽的信息,所述发送单元在所述同步信号信息对应的部分带宽上发送所述同步信号。
- 根据权利要求16-18任一项所述的中继设备,其特征在于,所述同步信号信息还包括:所述同步信号对应的发送功率,所述发送单元采用所述发送功率发送所述同步信号。
- 根据权利要求16-19任一项所述的设备,其特征在于,所述处理单元还用于获取所述中继设备的标识,所述处理单元根据所述中继设备的标识获取所述中继设备的同步信号信息。
- 根据权利要求16-20任一项所述的中继设备,其特征在于,所述接收单元还用于接收上级节点发送的另一个中继设备的标识和另一个中继设备的同步信号信息,所述发送单元用于将所述另一个中继设备的标识以及所述另一个中继设备的同步信号信息转发给所述另一个中继设备。
- 一种网络设备,其特征在于,包括:处理单元,用于生成中继节点的同步信号信息,所述同步信号信息包括以下信息中的至少一种:同步信号的子载波间隔、所述中继节点工作的频带信息、所述中继节点物理广播信道的信息、同步信号的周期、同步信号获取方式的指示信息;发送单元,用于通过空口向中继节点发送同步信号信息;接收单元,用于接收所述中继节点发送的确认消息。
- 根据权利要求22所述的网络设备,其特征在于,所述接收单元,还用于接收所述中继节点发送的同步信号信息请求,所述同步信号信息请求用于请求所述网络设备向所述中继节点发送所述中继节点的同步信号信息。
- 根据权利要求22所述的网络设备,其特征在于,所述接收单元还用于接收运行管理和维护节点发送的同步信号信息配置请求,所述同步信号信息配置请求用于指示所述网络设备将所述中继设备的同步信号信息发送给所述中继节点;所述处理单元,还用于根据所述同步信号信息配置请求生成所述中继节点的同步信号信息。
- 根据权利要求22-24任一项所述的网络设备,其特征在于,所述同步信号信息还包括:物理小区识别符PCI,以使所述中继节点根据所述PCI生成同步信号序列。
- 根据权利要求22-25任一项所述的网络设备,其特征在于,所述同步信号信息还包括所述同步信号信息对应的部分带宽的信息,以使所述中继节点根据所述同步信号信息对应的部分带宽的信息在所述部分带宽上发送所述同步信号。
- 根据权利要求22-26任一项所述的网络设备,其特征在于,所述同步信号信息还包括:所述同步信号的发送功率。
- 根据权利要求22-27任一项所述的网络设备,其特征在于,所述处理单元还用于获取所述中继节点的标识,所述发送单元用于将所述中继节点的标识与所述中继节点的同步信号信息一起传输给所述中继节点,以使所述中继节点根据所述中继节点的标识获取所述中继节点的同步信号信息。
- 根据权利要求22-28任一项所述的网络设备,其特征在于,还包括:所述发送单元还用于将另一个中继节点的标识与所述另一个中继节点的同步信号信息发送给所述中继节点,以使所述中继节点将所述另一个中继节点的标识以及所述另一个中继设备的同步信号信息发送给所述另一个中继节点。
- 一种中继设备,其特征在于,包括:接收器,用于接收上级节点通过空口发送的同步信号信息,所述同步信号信息包括以下信息中的至少一种:同步信号的子载波间隔、所述中继设备工作的频带信息、所述中继设备物理广播信道的信息、同步信号的周期、同步信号获取方式的指示信息;处理器,用于根据所述同步信号信息生成同步信号;发送器,用于发送所述处理器生成的同步信号。
- 根据权利要求30所述的中继设备,其特征在于,所述同步信号为同步信号序列,所述同步信号信息还包括:物理小区识别符PCI,所述处理单元用于根据所述PCI生成所述同步信号序列。
- 根据权利要求30或31所述的中继设备,其特征在于,所述同步信号信息还包括所述同步信号信息对应的部分带宽的信息,所述发送单元在所述同步信号信息对应的部分带宽上发送所述同步信号。
- 根据权利要求30-32任一项所述的中继设备,其特征在于,所述同步信号信息还包括:所述同步信号对应的发送功率,所述发送单元采用所述发送功率发送所述同步信号。
- 根据权利要求30-33任一项所述的中继设备,其特征在于,所述处理器还用于获取所述中继设备的标识,所述处理器根据所述中继设备的标识获取所述中继设备的同步信号信息。
- 根据权利要求30-34任一项所述的中继设备,其特征在于,所述接收器还用于接收上级节点发送的另一个中继设备的标识和另一个中继设备的同步信号信息,所述发送器还用于将所述另一个中继设备的标识以及所述另一个中继设备的同步信号信息转发给所述另一个中继设备。
- 一种网络设备,其特征在于,包括:处理器,用于生成中继节点的同步信号信息,所述同步信号信息包括以下信息中的至少一种:同步信号的子载波间隔、所述中继节点工作的频带信息、所述中继节点物理广播信道的信息、同步信号的周期、同步信号获取方式的指示信息;发送器,用于通过空口向中继节点发送同步信号信息;接收器,用于接收所述中继节点发送的确认消息。
- 根据权利要求36所述的网络设备,其特征在于,所述接收器,还用于接收所述中继节点发送的同步信号信息请求,所述同步信号信息请求用于请求所述网络设备向所述中继节点发送所述中继节点的同步信号信息。
- 根据权利要求36所述的网络设备,其特征在于,所述接收器还用于接收运行管理和维护节点发送的同步信号信息配置请求,所述同步信号信息配置请求用于指示所述网络设备将所述中继设备的同步信号信息发送给所述中继节点;所述处理器,还用于根据所述同步信号信息配置请求生成所述中继节点的同步信号信息。
- 根据权利要求36-38任一项所述的网络设备,其特征在于,所述同步信号信息还包括:物理小区识别符PCI,以使所述中继节点根据所述PCI生成同步信号序列。
- 根据权利要求36-39任一项所述的网络设备,其特征在于,所述同步信号信息还包括所述同步信号信息对应的部分带宽的信息,以使所述中继节点根据所述同步信号信息对应的部分带宽的信息在所述部分带宽上发送所述同步信号。
- 根据权利要求36-40任一项所述的网络设备,其特征在于,所述同步信号信息还包括:所述同步信号的发送功率。
- 根据权利要求36-41任一项所述的网络设备,其特征在于,所述处理器还用于获取所述中继节点的标识,所述发送器还用于将所述中继节点的标识与所述中继节点的同步信号信息一起传输给所述中继节点,以使所述中继节点根据所述中继节点的标识获取所述中继节点的同步信号信息。
- 根据权利要求36-42任一项所述的网络设备,其特征在于,还包括:所述发送器还用于将另一个中继节点的标识与所述另一个中继节点的同步信号信息发送给所述中继节点,以使所述中继节点将所述另一个中继节点的标识以及所述另一个中继设备的同步信号信息发送给所述另一个中继节点。
- 一种可读存储介质,其特征在于,所述可读存储介质上存储有程序,当所述程序运行时,实现如权利要求1-7任一项所述的发送同步信号的方法,或者实现如权利要求8-15任一项所述的发送同步信号的方法。
- 一种包含指令的计算机程序产品,其特征在于,所述计算机程序产品运行时,实现如权利要求1-7任一项所述的发送同步信号的方法,或者实现如权利要求8-15任一项所述的发送同步信号的方法。
- 一种芯片系统,其特征在于,所述设备包括存储器、处理器,所述存储器中存储代码和数据,所述存储器与所述处理器耦合,所述处理器运行所述存储器中的代码使得所述设备执行实现如权利要求1-7任一项所述的发送同步信号的方法,或者执行实现如权利要求8-15任一项所述的发送同步信号的方法。
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EP19751484.7A EP3749003A4 (en) | 2018-02-12 | 2019-01-22 | METHOD AND DEVICE FOR SENDING A SYNCHRONIZATION SIGNAL FROM A RELAY NODE |
BR112020016301-5A BR112020016301A2 (pt) | 2018-02-12 | 2019-01-22 | Método para enviar sinal de sincronização por nó de retransmissão, e aparelho |
US16/990,483 US11811495B2 (en) | 2018-02-12 | 2020-08-11 | Method for sending synchronization signal by relay node, and apparatus |
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CN110149642B (zh) | 2021-12-10 |
EP3749003A1 (en) | 2020-12-09 |
KR102492605B1 (ko) | 2023-01-27 |
KR20200118199A (ko) | 2020-10-14 |
BR112020016301A2 (pt) | 2020-12-15 |
CN110149642A (zh) | 2019-08-20 |
US11811495B2 (en) | 2023-11-07 |
US20210013959A1 (en) | 2021-01-14 |
EP3749003A4 (en) | 2021-03-31 |
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