Relay data transmission methods, devices and network equipment

Abstract

This invention provides a relay data transmission method, apparatus, and network device. The method includes: sending control information to a relay node device; wherein the control information includes spatially relevant information and / or transmission resources for data transmission by the relay node device. The method of this invention, by sending control information from a network-side device to a relay node device, instructs the relay node device to use spatially relevant information and / or transmission resources for data transmission, enabling the relay node device to forward signals according to the control information, thereby improving the coverage performance of the network-side device.

Description

Technical Field

[0001] This invention relates to the field of data communication networks, and in particular to a relay data transmission method, apparatus, and network equipment. Background Technology

[0002] Currently, NR-supported Integrated Access and Backhaul (IAB) equipment is typically used for coverage enhancement and is a relatively complex relay device. IAB can be seen as a device that supports both base station and terminal functions, making it relatively expensive. Another common device for improving network coverage is the repeater, which does not require demodulation of the original signal but simply amplifies and forwards it, making it cheaper. 3GPP has proposed a smart repeater, whose functionality and price fall between IAB and repeaters. This smart repeater can identify the uplink and downlink time slot ratios within a cell and can use more precise beamforming to cover target users.

[0003] When using a smart repeater operating in the FR2 (millimeter wave) band, an important aspect that needs to be studied is how to enable the smart repeater to amplify and forward the received signal at the appropriate time using the appropriate uplink or downlink RF link and beam to improve its coverage performance. Summary of the Invention

[0004] The purpose of this invention is to provide a relay data transmission method, apparatus, and network device for realizing signal transmission of relay devices, thereby improving the coverage performance of network-side devices.

[0005] This invention provides a relay data transmission method applied to a network-side device, wherein the method includes:

[0006] Send control information to relay node devices;

[0007] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0008] Optionally, in the relay data transmission method, the space-related information includes reference signal information and / or Transmission Configuration Indicator (TCI) status information.

[0009] Optionally, in the relay data transmission method, when the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a quasi-co-located QCL type information and a corresponding reference signal information.

[0010] Optionally, in the relay data transmission method, each of the reference signal information is one of the reference signal information configured by the network-side device for the relay node device for beam measurement and reporting.

[0011] Optionally, in the relay data transmission method, the control information includes at least one spatially related information, and each spatially related information is applied to the relay node device to transmit data through a transmission resource.

[0012] Optionally, in the relay data transmission method, the control information includes at least one spatially related information and a corresponding transmission resource for each spatially related information, and each spatially related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0013] Optionally, in the relay data transmission method, the control information is transmitted via at least one of downlink control signaling (DCI), media access control (MAC) control unit (CE) signaling, and radio resource control (RRC) signaling.

[0014] Optionally, the relay data transmission method further includes:

[0015] Based on the temporary identifier of the cell wireless network corresponding to the relay node device, the cyclic redundancy check (CRC) scrambles the data transmission channel carrying the control information.

[0016] Optionally, the relay data transmission method further includes:

[0017] Identify terminals located within the coverage area of ​​the relay node device;

[0018] The control information sent to the relay node device includes spatial information related to the relay node device forwarding data to terminals within the coverage area and / or transmission resources.

[0019] Optionally, in the relay data transmission method, determining the terminal located within the coverage area of ​​the relay node device includes:

[0020] Send at least two reference signals to the relay node device and instruct the relay node device to forward the at least two reference signals using different beams;

[0021] After at least one terminal receives the at least two reference signals, it shall obtain the beam quality measurement information corresponding to each reference signal reported by the terminal.

[0022] Based on the beam quality measurement information, the terminals located within the coverage area of ​​the relay node device are determined.

[0023] Optionally, in the relay data transmission method, determining the terminal located within the coverage area of ​​the relay node device based on the beam quality measurement information includes:

[0024] Sequentially determine whether the deviation between the multiple beam quality measurement information reported by each terminal meets the preset conditions.

[0025] It is determined that the terminal that meets the preset conditions is located within the coverage area of ​​the relay node device.

[0026] Optionally, in the relay data transmission method, the preset conditions include one of the following:

[0027] The variance of multiple beam quality measurement data is greater than a first preset value;

[0028] The difference between the maximum value and the minimum value among the multiple beam quality measurement information is greater than a second preset value.

[0029] Optionally, the relay data transmission method further includes:

[0030] The uplink and downlink time slot allocation is determined based on the terminals within the coverage area of ​​the relay node device;

[0031] The uplink and downlink time slot allocation is sent to the relay node device.

[0032] This invention also provides a relay data transmission method, applied to a relay node device, wherein the method includes:

[0033] Receive control information sent by network-side devices;

[0034] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0035] Optionally, in the relay data transmission method, the space-related information includes reference signal information and / or Transmission Configuration Indicator (TCI) status information.

[0036] Optionally, in the relay data transmission method, when the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a quasi-co-located QCL type information and a corresponding reference signal information.

[0037] Optionally, in the relay data transmission method, each of the reference signal information is one of the reference signal information configured by the network-side device for the relay node device for beam measurement and reporting.

[0038] Optionally, in the relay data transmission method, the control information includes at least one spatially related information, and each spatially related information is applied to the relay node device to transmit data through a transmission resource.

[0039] Optionally, in the relay data transmission method, the control information includes at least one spatially related information and a corresponding transmission resource for each spatially related information, and each spatially related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0040] Optionally, in the relay data transmission method, the control information is transmitted via at least one of downlink control signaling (DCI), media access control (MAC) control unit (CE) signaling, and radio resource control (RRC) signaling.

[0041] Optionally, in the relay data transmission method, the cyclic redundancy check (CRC) of the data transmission channel carrying the control information in the received control information is scrambled based on the temporary identifier of the cell wireless network corresponding to the relay node device.

[0042] Optionally, in the relay data transmission method, the received control information includes spatial information related to the relay node device forwarding data to terminals within the coverage area and / or transmission resources.

[0043] Optionally, the relay data transmission method further includes:

[0044] Acquire at least two reference signals sent by the network-side device, and instruction information instructing the relay node device to forward the at least two reference signals;

[0045] According to the indicated information, the at least two reference signals are forwarded using different beams.

[0046] Optionally, the relay data transmission method further includes:

[0047] The uplink and downlink time slot allocation is determined by the network-side device based on the terminals within the coverage area of ​​the relay node device.

[0048] This invention also provides a network-side device, comprising a transceiver, the transceiver being used for:

[0049] Send control information to relay node devices;

[0050] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0051] This invention also provides a relay node device, which includes a transceiver, the transceiver being used for:

[0052] Receive control information sent by network-side devices;

[0053] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0054] This invention also provides a relay data transmission device applied to network-side equipment, wherein the device includes:

[0055] The sending module is used to send control information to the relay node device;

[0056] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0057] This invention also provides a relay data transmission device applied to a relay node device, wherein the device includes:

[0058] The receiving module is used to receive control information sent by network-side devices;

[0059] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0060] This invention also provides a network device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the relay data transmission method as described in any of the preceding embodiments.

[0061] This invention also provides a readable storage medium, wherein a program is stored on the readable storage medium, and when the program is executed by a processor, it implements the steps in the relay data transmission method as described in any of the preceding claims.

[0062] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0063] The relay data transmission method described in this embodiment of the invention sends control information from the network-side device to the relay node device to instruct the relay node device to perform spatial information related to data transmission and / or transmission resources, so that the relay node device can forward signals according to the control information, thereby improving the coverage performance of the network-side device. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of the system architecture for using the relay data transmission method described in the embodiments of the present invention;

[0065] Figure 2 This is a flowchart illustrating the relay data transmission method according to one embodiment of the present invention;

[0066] Figures 3 to 6 A schematic diagram illustrating the control information in the method described in the embodiments of the present invention;

[0067] Figure 7 This is a flowchart illustrating a relay data transmission method according to another embodiment of the present invention;

[0068] Figure 8 This is a schematic diagram of the network-side device according to an embodiment of the present invention;

[0069] Figure 9 This is a schematic diagram of the structure of the relay node device according to an embodiment of the present invention;

[0070] Figure 10 This is a schematic diagram of the structure of a relay data transmission device according to one embodiment of the present invention;

[0071] Figure 11 This is a schematic diagram of the structure of a relay data transmission device according to another embodiment of the present invention. Detailed Implementation

[0072] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0073] The terms “first,” “second,” etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The terms “and / or” in the specification and claims indicate at least one of the connected objects.

[0074] The following description provides examples and is not intended to limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the spirit and scope of this disclosure. Various procedures or components may be appropriately omitted, substituted, or added to the examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0075] The embodiments of the present invention are described below with reference to the accompanying drawings. The relay data transmission method provided by the embodiments of the present invention can be applied to wireless communication systems. Optionally, the relay data transmission method of the embodiments of the present invention can be applied to various systems, especially 5G systems. For example, applicable systems may include Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR), etc. All of these systems include terminal equipment and network equipment. The system may also include a core network component, such as the Evolved Packet System (EPS) or the 5G system (5GS).

[0076] See Figure 1The diagram shows a network system structure to which the beam signal transmission method described in this embodiment of the invention can be applied. The system includes a terminal 11, a relay node device 12, and a network-side device 13. The terminal 11 can be a user equipment (UE), such as a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), mobile internet device (MID), or wearable device. It should be noted that the specific type of terminal 11 is not limited in this embodiment. The network-side device 13 can be a 5G or later version base station (e.g., gNB, 5G NR NB), or a base station in other communication systems, also referred to as a node B. It should be noted that this embodiment only uses a 5G base station as an example, but the specific type of base station is not limited. The relay node device 12 is connected to both the terminal 11 and the network-side device 13, enabling amplification and forwarding of data between the terminal 11 and the network-side device 13. Optionally, the relay node device 12 can be, but is not limited to, a smart repeater.

[0077] The smart repeater can be a device with "special UE + amplified forwarding function". It may be invisible to ordinary terminals, but visible to network-side devices. This invention provides a relay data transmission method that sends control information from the network-side device to the relay node device. This control information instructs the relay node device to transmit spatially relevant information and / or transmission resources, enabling the relay node device to transmit signals according to the control information and thus improving the coverage performance of the network-side device.

[0078] One implementation method, such as Figure 2 As shown, this embodiment of the invention provides a relay data transmission method applied to a network-side device, comprising:

[0079] S210, send control information to the relay node device;

[0080] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0081] Specifically, the control information sent by the network-side device to the relay node device uses spatially relevant information to indicate the beam used by the relay node device for data transmission, and uses transmission resources to indicate the time slot and / or symbol of the beam applied by the spatially relevant information.

[0082] Optionally, the relay data transmission method according to the embodiments of the present invention further includes:

[0083] Based on the temporary identifier of the cell wireless network corresponding to the relay node device, the cyclic redundancy check (CRC) of the data transmission channel carrying the control information is scrambled.

[0084] Specifically, the Cell-Radio Network Temporary Identifier (C-RNTI) corresponding to the relay node device is a unique C-RNTI for that relay node device, so that the control information sent by the network-side device can only be recognized by that specific relay node device, and terminals without relay function cannot recognize it.

[0085] Optionally, in this embodiment of the invention, the C-RNTI specific to each relay node device can be pre-configured and determined by the network-side device, so as to clearly identify the C-RNTI that can be used to send control information to the relay node device.

[0086] Optionally, in this embodiment of the invention, the method further includes:

[0087] Obtain capability reporting information sent by the relay node device, which includes a capability identifier indicating that the relay node device is a smart repeater;

[0088] Based on the capability identifier, and using the temporary identifier of the cell radio network corresponding to the relay node device, the cyclic redundancy check scramble is applied to the data transmission channel carrying the control information.

[0089] In this implementation, the relay node device reports capability reporting information, including a capability identifier, to the network-side device to indicate that the relay node device is a smart repeater. This allows the network-side device to send control information to the relay node device based on the capability identifier. In other words, based on the C-RNTI unique to the relay node device, the data transmission channel carrying the control information is CRC scrambled so that only the relay node device can recognize the control information.

[0090] In this embodiment of the invention, optionally, the control information is transmitted via at least one of Downlink conholsignaling (DCI), Media Access Control (MAC) Control Element (CE) signaling, and Radio Resource Control (RRC) signaling.

[0091] Based on this, the data transmission channel carrying the control information may include a Physical Downlink Control Channel (PDCCH) or a Physical Downlink Shared Channel (PDSCH).

[0092] In this embodiment of the invention, optionally, the control signaling is specifically sent to the relay node device, meaning only the relay node device can recognize the control information. Optionally, when sending the control information via DCI, a different DCI format than the prior art can be used. Of course, existing DCI formats, such as DCI format 1_0, DCI format 1_1, or DCI format 1-2, can also be used to send the control information, as long as the requirement that only the relay node device can recognize the control information is met.

[0093] Optionally, the relay data transmission method described in this embodiment of the invention further includes:

[0094] Identify terminals located within the coverage area of ​​the relay node device;

[0095] The control information sent to the relay node device includes spatial information related to the data sent by the relay node device to the terminals within the coverage area and / or transmission resources.

[0096] Optionally, the method further includes:

[0097] In the control information sent to the relay node device, the control information instructs the relay node device to autonomously decide the beam and / or transmission resources used for forwarding data when forwarding data to terminals outside the coverage area.

[0098] Specifically, in order for the relay node device to amplify and forward the received signal using the appropriate beam at the appropriate time, for UEs within the coverage area of ​​the relay node device, the network-side device can adjust the beam used by the relay node device to amplify and forward data by sending control information to the relay node device when scheduling the terminal to transmit data; for UEs outside the coverage area of ​​the relay node device, the network-side device does not need to send control information to the relay node device to adjust the beam used by the relay node device to amplify and forward data when scheduling the terminal to transmit data.

[0099] Optionally, for UEs outside the coverage area of ​​the relay node device, the network-side device can send control information to the relay node device to instruct the relay node device to independently decide which beam to use for amplification and forwarding, or send control information to the relay node device to instruct the relay node device to turn off the target time slot or target symbol in order to reduce power consumption.

[0100] In this embodiment of the invention, optionally, determining the terminal located within the coverage area of ​​the relay node device includes:

[0101] Send at least two reference signals to the relay node device and instruct the relay node device to forward the at least two reference signals to multiple terminals using different beams;

[0102] After at least one of the terminals receives the at least two reference signals, the beam quality measurement information corresponding to each reference signal is obtained;

[0103] Based on the beam quality measurement information, the terminals located within the coverage area of ​​the relay node device are determined.

[0104] Optionally, the network-side device can transmit at least two reference signals using the same beam and instruct the relay node device to forward the at least two reference signals using different beams. For example, it can forward the corresponding reference signal by changing each beam sequentially in a polling manner. The terminal uses the same beam to receive and measure each reference signal and reports the beam quality measurement information obtained after measuring each reference signal to the network-side device. Optionally, the deviation between beam quality measurement information can also be reported to the network-side device. For example, the beam quality measurement information can be, but is not limited to, Layer 1 Reference Signal Received Power (L1-RSRP). The terminal can perform beam quality measurement for each received reference signal to obtain the L1-RSRP and report the measured L1-RSRP to the network-side device, or report the deviation between the measured L1-RSRPs of multiple reference signals to the network-side device.

[0105] Optionally, determining terminals located within the coverage area of ​​the relay node device based on the beam quality measurement information includes:

[0106] The system sequentially determines whether the deviation between the multiple beam quality measurement information reported by each terminal meets a preset condition, and determines that the terminal corresponding to the preset condition is located within the coverage area of ​​the relay node device.

[0107] Optionally, in the relay data transmission method, the preset conditions include one of the following:

[0108] The variance of multiple beam quality measurement data is greater than a first preset value;

[0109] The difference between the maximum value and the minimum value among the multiple beam quality measurement information is greater than a second preset value.

[0110] For example, for one terminal, the network-side device can receive the L1-RSRP reported by the terminal for beam quality measurement corresponding to each reference signal. If the variance among multiple L1-RSRPs is greater than a first preset value, then the terminal is determined to be within the coverage area of ​​the relay node device; if the variance among multiple L1-RSRPs is less than or equal to the first preset value, then the terminal is determined to be outside the coverage area of ​​the relay node device. Optionally, in another embodiment, if the difference between the maximum and minimum values ​​among multiple L1-RSRPs is greater than a second preset value, then the terminal is determined to be within the coverage area of ​​the relay node device; if the difference between the maximum and minimum values ​​is less than or equal to the second preset value, then the terminal is determined to be outside the coverage area of ​​the relay node device.

[0111] Specifically, since the beam signal quality of a terminal within the coverage area of ​​a relay node device differs significantly from that of a reference signal received from a beam corresponding to that coverage area, and from that of a reference signal received from a beam not corresponding to that coverage area, it is possible to determine whether the terminal is within the coverage area of ​​the relay node device by judging the deviation between the beam quality measurement information of multiple reference signals reported by the terminal.

[0112] Optionally, in this embodiment of the invention, the relay data transmission method further includes:

[0113] The uplink and downlink time slot allocation is determined based on the terminals within the coverage area of ​​the relay node device;

[0114] The uplink and downlink time slot allocation is sent to the relay node device.

[0115] Specifically, in order for the relay node device to amplify and forward the received signal using the appropriate uplink or downlink RF amplification and forwarding link at the appropriate time, the network-side device determines the appropriate uplink and downlink time slot ratio for the relay node device to forward data based on the uplink and downlink time slot ratio of the terminals within the coverage area of ​​the relay node device (optionally, the uplink and downlink time slot ratio includes dynamic uplink and downlink time slot ratio, such as the time slot ratio indicated by the SlotFormat Indication (SFI)).

[0116] Optionally, the network-side equipment uses the same uplink and downlink time slot ratio for terminals within the coverage area of ​​the same relay node equipment.

[0117] Optionally, the network-side equipment may send the uplink / downlink time slot allocation to the relay node equipment via RRC signaling, DCI signaling, or SFI signaling.

[0118] In this embodiment of the invention, optionally, in step S210, the space-related information includes reference signal information and / or Transmission Configuration Indication (TCI) status information, and the reference signal information and / or Transmission Configuration Indication (TCI) status information indicate the beam used by the relay node device for data transmission.

[0119] In this implementation, the control information may include reference signal information and / or TCI status information, which instruct the relay node device to use the beam for data transmission.

[0120] Optionally, when the space-related information includes reference signal information, each reference signal information corresponds to one beam;

[0121] When the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a quasi-co-located QCL type and corresponding reference signal information. Optionally, each reference signal information corresponds to a beam.

[0122] In one embodiment, the control information includes at least one space-related information, and each space-related information is applied to the relay node device for data transmission through a transmission resource.

[0123] In another embodiment, the control information includes at least one space-related information and a transmission resource corresponding to each space-related information, wherein each space-related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0124] The following provides an example illustrating a specific implementation method for sending control information to a relay node device using the relay data transmission method described in this embodiment of the invention.

[0125] Implementation Method 1

[0126] In this first embodiment, the network-side device sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Signaling (DCI) to the relay node device. The DCI includes at least one reference signal information, which is also spatially related information, used to indicate the beam used by the relay node device for data transmission. Optionally, this reference signal information is one of the reference signals configured and sent by the network-side device to the relay node device for beam measurement and reporting.

[0127] In this implementation, each of the at least one reference signal information included in the DCI indicates the beam used by the relay node device for data transmission through a transmission resource.

[0128] For example, based on this control information, there are X Channel State Information Resource Indicators (CSI-RS), such as... Figure 3 As shown, if the time slot for the terminal to receive the PDCCH is set to slot n, then the relay node device will set the beam used for amplifying and forwarding data in slot n+1 according to the Channel State Information Reference Signal (CSI-RS) 3; in slot n+2 according to CSI-RS 5, and so on, and in slot n+X according to CSI-RS 9.

[0129] Optionally, in this embodiment, the relay node device determines the time slot corresponding to at least one reference signal information indicated in the control information according to the time slot of the terminal receiving the PDCCH, and performs data transmission in the corresponding time slot according to the beam determined by the reference signal information.

[0130] Optionally, based on at least one reference signal information indicated in the control information, the relay node device determines the corresponding beam according to the pre-acquired correspondence between the reference signal information and the beam. This correspondence can be determined based on the correspondence during historical data transmission.

[0131] In this embodiment of the invention, optionally, the network-side device sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Signaling (DCI) to the relay node device, wherein the number X of reference signal information included in the DCI is greater than or equal to the period of the search space of the PDCCH.

[0132] Implementation Method 2

[0133] In this second implementation, the network-side device sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Signaling (DCI) to the relay node device. The DCI includes at least one reference signal information and transmission resources corresponding to each reference signal information, such as time slot information.

[0134] This reference signal information, also known as space-related information, is used to indicate the beam used by the relay node device for data transmission. Optionally, this reference signal information is one of the reference signals configured and sent by the network-side device to the relay node device for beam measurement and reporting.

[0135] In this implementation, each reference signal information included in the DCI indicates the beam used by the relay node device for data transmission through a time slot, and the transmission resources included in the DCI are used to indicate the time slot information applied to each reference signal information.

[0136] like Figure 4 As shown, the control information is configured to include X Channel State Information Reference Signals (CSI-RS), and also includes the number of time slots X1, X2, ..., XS applied to each CSI-RS. M Based on this control information, the time slot for the terminal to receive the PDCCH is set to slot n. Then, the relay node device will configure the beam used for amplifying and forwarding data according to CSI-RS 3 from slot n+1 to slot n+X1, and according to CSI-RS 5 from slot n+X1+1 to slot n+X2, ..., from slot n+X... (M-1) +1 to slot n+X M Configure the beam used for amplified data transmission according to CSI-RS 9. Optionally, X M The period of the search space that is greater than or equal to that of the PDCCH.

[0137] Implementation Method 3

[0138] In this third implementation, the network-side device sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Signaling (DCI) to the relay node device. This DCI includes at least one Transmission Configuration Indicator (TCI) status information, which is spatially related information used to indicate the beam used by the relay node device for data transmission. Optionally, each TCI status information includes a Quasi-Co-located (QCL) type (which can be a newly defined QCL type, such as QCL Type-E) and corresponding reference signal information, with each reference signal corresponding to a beam. Optionally, this reference signal information is one of the reference signals configured and sent by the network-side device to the relay node device for beam measurement and reporting.

[0139] In this implementation, each TCI status information included in the DCI indicates the beam used by the relay node device for data transmission through a transmission resource.

[0140] For example, based on this control information, including X TCI status information, the included TCI status information is as follows: Figure 5 As shown, if the time slot for the terminal to receive the PDCCH is set to slot n, then the relay node device will set the beam used for amplifying and forwarding data in slot n+1 according to the Channel State Information Reference Signal (CSI-RS) 3; in slot n+2 according to CSI-RS 5, and so on, and in slot n+X according to CSI-RS 9.

[0141] Optionally, in this embodiment, the relay node device determines the time slot corresponding to at least one TCI status information indicated in the control information according to the time slot of the terminal receiving the PDCCH, and performs data transmission in the corresponding time slot according to the beam determined by the channel state information reference signal corresponding to the TCI status information.

[0142] Optionally, based on at least one TCI state information indicated in the control information, a corresponding channel state information reference signal is determined, and a corresponding beam is determined based on the pre-acquired correspondence between the channel state information reference signal and the beam. This correspondence can be determined based on the correspondence during historical data transmission.

[0143] In this embodiment of the invention, optionally, the network-side device sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Signaling (DCI) to the relay node device, wherein the number X of TCI state information included in the DCI is greater than or equal to the period of the search space of the PDCCH.

[0144] Implementation Method 4

[0145] In this third implementation, the network-side device sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Signaling (DCI) to the relay node device. This DCI includes at least one Transmission Configuration Indicator (TCI) status information and corresponding transmission resources, such as time slot information, for each TCI status information. This TCI status information is also spatially related information, used to indicate the beam used by the relay node device for data transmission. Optionally, each TCI status information includes a QCL type (which can be a newly defined QCL type, such as QCL Type-E) and corresponding reference signal information, with each reference signal information corresponding to a beam. Optionally, this reference signal information is one of the reference signals configured and sent by the network-side device to the relay node device for beam measurement and reporting.

[0146] In this implementation, each TCI status information included in the DCI indicates the beam used by the relay node device for data transmission through a timeslot information, and the transmission resources included in the DCI are used to indicate the timeslot information applied by each TCI status information.

[0147] For example, based on this control information, including X TCI status information, such as... Figure 6 As shown, it also includes the number of time slots X1, X2, ..., X6 applied to each TCI status information. M Based on this control information, the time slot for the terminal to receive the PDCCH is set to slot n. Then, the relay node device will configure its amplification and forwarding beam according to CSI-RS 3 from slot n+1 to slot n+X1, and according to CSI-RS 5 from slot n+X1+1 to slot n+X2, ..., from slot n+X... (M-1) +1 to slot n+X M Configure the beam used for amplification and relay according to CSI-RS 9. Optionally, X M The period of the search space that is greater than or equal to that of the PDCCH.

[0148] The above embodiments, taking the example of a network-side device sending a Physical Downlink Control Channel (PDCCH) to a relay node device to transmit control information, provide a detailed explanation of the specific method for relay data transmission described in this invention. It should be noted that the network-side device can also send the aforementioned control information by sending MAC-CE control signaling to the relay node device; specific methods can be found in the above embodiments and will not be described in detail here.

[0149] The relay data transmission method described in this embodiment of the invention sends control information from the network-side device to the relay node device to instruct the relay node device to transmit spatial information and / or transmission resources, enabling the relay node device to forward signals according to the control information, thereby improving the coverage performance of the network-side device.

[0150] This invention also provides a relay data transmission method, applied to relay node devices, such as... Figure 7 As shown, the method includes:

[0151] S710 receives control information sent by network-side devices;

[0152] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0153] Optionally, the method further includes:

[0154] Signal forwarding is performed based on the aforementioned space-related information and / or transmission resources.

[0155] The relay data transmission method described in this embodiment of the invention involves a network-side device sending control information to a relay node device, instructing the relay node device to transmit spatially relevant information and / or transmission resources, enabling the relay node device to transmit signals according to the control information, thereby improving the coverage performance of the network-side device.

[0156] Optionally, in the relay data transmission method, the space-related information includes reference signal information and / or Transmission Configuration Indicator (TCI) status information.

[0157] Optionally, in the relay data transmission method, wherein,

[0158] When the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a QCL type information and a corresponding reference signal information.

[0159] Optionally, in the relay data transmission method, each of the reference signal information is one of the reference signal information configured by the network-side device for the relay node device for beam measurement and reporting.

[0160] Optionally, in the relay data transmission method, the control information includes at least one spatially related information, and each spatially related information is applied to the relay node device to transmit data through a transmission resource.

[0161] Optionally, in the relay data transmission method, the control information includes at least one spatially related information and a corresponding transmission resource for each spatially related information, and each spatially related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0162] Optionally, in the relay data transmission method, the control information is transmitted via at least one of downlink control signaling (DCI), media access control (MAC) control unit (CE) signaling, and radio resource control (RRC) signaling.

[0163] Optionally, in the relay data transmission method, the cyclic redundancy check (CRC) of the data transmission channel carrying the control information in the received control information is scrambled based on the temporary identifier of the cell wireless network corresponding to the relay node device.

[0164] Optionally, in the relay data transmission method, the received control information includes spatial information related to the relay node device forwarding data to terminals within the coverage area and / or transmission resources.

[0165] Optionally, the relay data transmission method further includes:

[0166] Acquire at least two reference signals sent by the network-side device, and instruction information instructing the relay node device to forward the at least two reference signals;

[0167] According to the indicated information, the at least two reference signals are forwarded using different beams.

[0168] Optionally, the relay data transmission method further includes:

[0169] The uplink and downlink time slot allocation is determined by the network-side device based on the terminals within the coverage area of ​​the relay node device.

[0170] The specific implementation of the relay data transmission method described in this embodiment of the invention when applied to relay node devices can be combined with the above detailed description of the method when applied to network-side devices, and will not be repeated here.

[0171] Another embodiment of the present invention also provides a network-side device, such as... Figure 8 As shown, the network-side device 800 includes a transceiver 810 and a processor 820, wherein the transceiver 810 is used for:

[0172] Send control information to relay node devices;

[0173] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0174] Optionally, in the network-side device, the space-related information includes reference signal information and / or Transmission Configuration Indicator (TCI) status information.

[0175] Optionally, the network-side device, wherein,

[0176] When the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a QCL type information and a corresponding reference signal information.

[0177] Optionally, in the network-side device, each of the reference signal information is one of the reference signal information configured by the network-side device for beam measurement and reporting to the relay node device.

[0178] Optionally, in the network-side device, the control information includes at least one spatially related information, and each spatially related information is applied to the relay node device for data transmission through a transmission resource.

[0179] Optionally, in the network-side device, the control information includes at least one spatially related information and a transmission resource corresponding to each spatially related information, wherein each spatially related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0180] Optionally, in the network-side device, the control information is transmitted via at least one of Downlink Control Signaling (DCI), Media Access Control (MAC) Control Unit (CE) signaling, and Radio Resource Control (RRC) signaling.

[0181] Optionally, in the network-side device, the processor 820 is used for:

[0182] Based on the temporary identifier of the cell wireless network corresponding to the relay node device, the cyclic redundancy check (CRC) scrambles the data transmission channel carrying the control information.

[0183] Optionally, in the network-side device, the processor 820 is used for:

[0184] Identify terminals located within the coverage area of ​​the relay node device;

[0185] The control information sent to the relay node device includes spatial information related to the data sent by the relay node device to the terminals within the coverage area and / or transmission resources.

[0186] Optionally, in the network-side device, the processor 820 determines terminals located within the coverage area of ​​the relay node device, including:

[0187] Send at least two reference signals to the relay node device and instruct the relay node device to forward the at least two reference signals using different beams;

[0188] After at least one terminal receives the at least two reference signals, it shall obtain the beam quality measurement information corresponding to each reference signal reported by the terminal.

[0189] Based on the beam quality measurement information, the terminals located within the coverage area of ​​the relay node device are determined.

[0190] Optionally, in the network-side device, the processor 820 determines the terminals located within the coverage area of ​​the relay node device based on the beam quality measurement information, including:

[0191] Sequentially determine whether the deviation between the multiple beam quality measurement information reported by each terminal meets the preset conditions.

[0192] It is determined that the terminal that meets the preset conditions is located within the coverage area of ​​the relay node device.

[0193] Optionally, in the network-side device, the preset conditions include one of the following:

[0194] The variance of multiple beam quality measurement data is greater than a first preset value;

[0195] The difference between the maximum value and the minimum value among the multiple beam quality measurement information is greater than a second preset value.

[0196] Optionally, in the network-side device, the processor 820 is further configured to:

[0197] The uplink and downlink time slot allocation is determined based on the terminals within the coverage area of ​​the relay node device;

[0198] The uplink and downlink time slot allocation is sent to the relay node device.

[0199] Another embodiment of the present invention also provides a relay node device, such as... Figure 9 As shown, the relay node device 900 includes a transceiver 910, which is used for:

[0200] Receive control information sent by network-side devices;

[0201] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0202] Optionally, in the relay node device, the space-related information includes reference signal information and / or Transmission Configuration Indicator (TCI) status information.

[0203] Optionally, the relay node device, wherein,

[0204] When the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a QCL type information and a corresponding reference signal information.

[0205] Optionally, in the relay node device, each of the reference signal information is one of the reference signal information configured by the network-side device for beam measurement and reporting.

[0206] Optionally, in the relay node device, the control information includes at least one spatially related information, and each spatially related information is applied to the relay node device for data transmission through a transmission resource.

[0207] Optionally, in the relay node device, the control information includes at least one spatially related information and a transmission resource corresponding to each spatially related information, wherein each spatially related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0208] Optionally, in the relay node device, the control information is transmitted via at least one of Downlink Control Signaling (DCI), Media Access Control (MAC) Control Unit (CE) signaling, and Radio Resource Control (RRC) signaling.

[0209] Optionally, in the relay node device, the cyclic redundancy check (CRC) of the data transmission channel carrying the control information in the received control information is scrambled based on the temporary identifier of the cell radio network corresponding to the relay node device.

[0210] Optionally, in the relay node device, the received control information includes spatial information related to the data forwarded by the relay node device to the terminals within the coverage area and / or transmission resources.

[0211] Optionally, in the relay node device, the transceiver 910 is further configured to:

[0212] Acquire at least two reference signals sent by the network-side device, and instruction information instructing the relay node device to forward the at least two reference signals;

[0213] According to the indicated information, the at least two reference signals are forwarded using different beams.

[0214] Optionally, in the relay node device, the transceiver 910 is further configured to:

[0215] The uplink and downlink time slot allocation is determined by the network-side device based on the terminals within the coverage area of ​​the relay node device.

[0216] One embodiment of the present invention also provides a relay data transmission device, applied to network-side equipment, such as... Figure 10 As shown, the device includes a transmitting module 1010 and a processing module 1020:

[0217] The sending module 1010 is used to send control information to the relay node device;

[0218] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0219] Optionally, in the relay data transmission device, the space-related information includes reference signal information and / or Transmission Configuration Indicator (TCI) status information.

[0220] Optionally, in the relay data transmission device, wherein,

[0221] When the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a QCL type information and a corresponding reference signal information.

[0222] Optionally, in the relay data transmission device, each of the reference signal information is one of the reference signal information configured by the network-side device for the relay node device for beam measurement and reporting.

[0223] Optionally, in the relay data transmission device, the control information includes at least one spatially related information, and each spatially related information is applied to the relay node device for data transmission through a transmission resource.

[0224] Optionally, in the relay data transmission device, the control information includes at least one spatially related information and a corresponding transmission resource for each spatially related information, wherein each spatially related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0225] Optionally, in the relay data transmission device, the control information is transmitted via at least one of downlink control signaling (DCI), media access control (MAC) control unit (CE) signaling, and radio resource control (RRC) signaling.

[0226] Optionally, in the relay data transmission device, the processing module 1020 is used for:

[0227] Based on the temporary identifier of the cell wireless network corresponding to the relay node device, the cyclic redundancy check (CRC) scrambles the data transmission channel carrying the control information.

[0228] Optionally, in the relay data transmission device, the processing module 1020 is used for:

[0229] Identify terminals located within the coverage area of ​​the relay node device;

[0230] The control information sent to the relay node device includes spatial information related to the data sent by the relay node device to the terminals within the coverage area and / or transmission resources.

[0231] Optionally, in the relay data transmission device, the processing module 1020 determines terminals located within the coverage area of ​​the relay node device, including:

[0232] Send at least two reference signals to the relay node device and instruct the relay node device to forward the at least two reference signals using different beams;

[0233] After at least one terminal receives the at least two reference signals, it shall obtain the beam quality measurement information corresponding to each reference signal reported by the terminal.

[0234] Based on the beam quality measurement information, the terminals located within the coverage area of ​​the relay node device are determined.

[0235] Optionally, in the relay data transmission device, the processing module 1020 determines the terminals located within the coverage area of ​​the relay node device based on the beam quality measurement information, including:

[0236] Sequentially determine whether the deviation between the multiple beam quality measurement information reported by each terminal meets the preset conditions.

[0237] It is determined that the terminal that meets the preset conditions is located within the coverage area of ​​the relay node device.

[0238] Optionally, in the relay data transmission device, the preset conditions include one of the following:

[0239] The variance of multiple beam quality measurement data is greater than a first preset value;

[0240] The difference between the maximum value and the minimum value among the multiple beam quality measurement information is greater than a second preset value.

[0241] Optionally, in the relay data transmission device, the processing module 1020 is further configured to:

[0242] The uplink and downlink time slot allocation is determined based on the terminals within the coverage area of ​​the relay node device;

[0243] The uplink and downlink time slot allocation is sent to the relay node device.

[0244] Another embodiment of the present invention also provides a relay data transmission device, applied to relay node equipment, such as... Figure 11 As shown, the device includes:

[0245] Receiver module 1101 is used to receive control information sent by network-side devices;

[0246] The control information includes spatial information related to data transmission by the relay node device and / or transmission resources.

[0247] Optionally, in the relay data transmission device, the space-related information includes reference signal information and / or Transmission Configuration Indicator (TCI) status information.

[0248] Optionally, in the relay data transmission device, wherein,

[0249] When the space-related information includes Transmission Configuration Indicator (TCI) status information, each TCI status information includes a QCL type information and a corresponding reference signal information.

[0250] Optionally, in the relay data transmission device, each of the reference signal information is one of the reference signal information configured by the network-side device for the relay node device for beam measurement and reporting.

[0251] Optionally, in the relay data transmission device, the control information includes at least one spatially related information, and each spatially related information is applied to the relay node device for data transmission through a transmission resource.

[0252] Optionally, in the relay data transmission device, the control information includes at least one spatially related information and a corresponding transmission resource for each spatially related information, wherein each spatially related information is applied to the relay node device to transmit data on the corresponding transmission resource.

[0253] Optionally, in the relay data transmission device, the control information is transmitted via at least one of downlink control signaling (DCI), media access control (MAC) control unit (CE) signaling, and radio resource control (RRC) signaling.

[0254] Optionally, in the relay data transmission device, the cyclic redundancy check (CRC) of the data transmission channel carrying the control information in the received control information is scrambled based on the temporary identifier of the cell wireless network corresponding to the relay node device.

[0255] Optionally, in the relay data transmission device, the received control information includes spatial information related to the relay node device forwarding data to terminals within the coverage area and / or transmission resources.

[0256] Optionally, in the relay data transmission device, the receiving module 1101 is further configured to:

[0257] Acquire at least two reference signals sent by the network-side device, and instruction information instructing the relay node device to forward the at least two reference signals;

[0258] According to the indicated information, the at least two reference signals are forwarded using different beams.

[0259] Optionally, in the relay data transmission device, the receiving module 1101 is further configured to:

[0260] The uplink and downlink time slot allocation is determined by the network-side device based on the terminals within the coverage area of ​​the relay node device.

[0261] One embodiment of the present invention also provides a network device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the relay data transmission method as described in any of the preceding claims.

[0262] In this embodiment of the invention, the network device can be the network-side device or the relay node device described above. The specific implementation of the relay data transmission method by the network-side device or the relay node device can be found in the above description, and will not be described in detail here.

[0263] In addition, specific embodiments of the present invention also provide a readable storage medium having a program stored thereon, wherein the program, when executed by a processor, implements the steps of any of the relay data transmission methods described above.

[0264] Specifically, the readable storage medium is applied to the aforementioned network-side device or relay node device. When applied to the network-side device or relay node device, the execution steps in the corresponding relay data transmission method are described in detail above, and will not be repeated here.

[0265] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0266] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can be physically comprised separately, or two or more units can be integrated into one unit. The integrated unit described above can be implemented in hardware or in the form of hardware plus software functional units.

[0267] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a storage medium, include several instructions that cause a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the transmission and reception methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0268] The above describes the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A relay data transmission method, applied to network-side equipment, characterized in that, The method comprises: sending control information to a relay node device; wherein the control information comprises spatial related information and / or transmission resource for data transmission of the relay node device; wherein the method further comprises: determining terminals within a coverage range of the relay node device; wherein the control information sent to the relay node device comprises spatial related information and / or transmission resource for data transmission of the relay node device to the terminals within the coverage range.

2. The method of claim 1, wherein, The spatial related information comprises reference signal information and / or transmission configuration indication (TCI) state information.

3. The method of claim 2, wherein, When the spatial related information comprises TCI state information, each TCI state information comprises a quasi co-location (QCL) type information and corresponding reference signal information.

4. The method of claim 3, wherein, Each reference signal information is one of reference signal information configured by the network side device for beam measurement and reporting of the relay node device.

5. The method of claim 1 to 4, wherein, The control information comprises at least one spatial related information, and each spatial related information is applied to data transmission of the relay node device through a transmission resource.

6. The method of claim 1 to 4, wherein, The control information comprises at least one spatial related information and corresponding transmission resource applied to each spatial related information, and each spatial related information is applied to data transmission of the relay node device through the corresponding transmission resource.

7. The method of claim 1, wherein, The control information is sent through at least one of downlink control information (DCI), medium access control (MAC) control element (CE) signaling and radio resource control (RRC) signaling.

8. The method of claim 1, wherein, The method further comprises: based on a cell radio network temporary identifier (C-RNTI) corresponding to the relay node device, scrambling a cyclic redundancy check (CRC) of a data transmission channel carrying the control information.

9. The method of claim 1, wherein, The determination of the terminals within the coverage range of the relay node device comprises: sending at least two reference signals to the relay node device and instructing the relay node device to forward the at least two reference signals through different beams; obtaining beam quality measurement information corresponding to each reference signal reported by at least one terminal after receiving the at least two reference signals; determining the terminals within the coverage range of the relay node device according to the beam quality measurement information.

10. The method of claim 9, wherein, The determination of the terminals within the coverage range of the relay node device according to the beam quality measurement information comprises: sequentially judging whether a deviation between multiple beam quality measurement information reported by each terminal satisfies a preset condition; determining that the terminal corresponding to the preset condition is within the coverage range of the relay node device.

11. The method of claim 10, wherein, The preset condition comprises one of: a variance of the multiple beam quality measurement information is greater than a first preset value; a difference between a maximum value of the multiple beam quality measurement information and a minimum value of the multiple beam quality measurement information is greater than a second preset value.

12. The method of claim 1, wherein, The method further comprises: determining an uplink-downlink time slot ratio according to the terminals within the coverage range of the relay node device; sending the uplink-downlink time slot ratio to the relay node device.

13. A method of relaying data transmission, applied to a relay node device, comprising: The method comprises: receive control information sent by a network-side device; wherein the control information comprises spatial-related information and / or transmission resources for data transmission by the relay node device; and wherein the received control information comprises spatial-related information and / or transmission resources for data forwarding by the relay node device to terminals within a coverage range.

14. The method of claim 13, wherein, The spatial-related information comprises reference signal information and / or transmission configuration indication (TCI) state information.

15. The method of claim 14, wherein, When the spatial-related information comprises TCI state information, each TCI state information comprises a quasi co-location (QCL) type information and corresponding reference signal information.

16. The method of claim 15, wherein, Each of the reference signal information is one of reference signal information configured by the network-side device for beam measurement and reporting by the relay node device.

17. The method of claim 13, 14, 15 or 16, wherein, The control information comprises at least one spatial-related information, and each spatial-related information is applied to data transmission by the relay node device through a transmission resource.

18. The method of claim 13, 14, 15 or 16, wherein, The control information comprises at least one spatial-related information and a corresponding transmission resource to which each spatial-related information is applied, and each spatial-related information is applied to data transmission by the relay node device through the corresponding transmission resource.

19. The method of claim 13, wherein, The control information is sent through at least one of downlink control information (DCI), medium access control (MAC) control element (CE) signaling, and radio resource control (RRC) signaling.

20. The method of claim 13, wherein, In the received control information, a cyclic redundancy check (CRC) of a data transmission channel carrying the control information is scrambled based on a cell radio network temporary identifier (C-RNTI) corresponding to the relay node device.

21. The method of claim 13, wherein, The method further comprises: obtaining at least two reference signals sent by the network-side device and indication information indicating forwarding of the at least two reference signals by the relay node device; and forwarding the at least two reference signals through different beams according to the indication information.

22. The method of claim 13, wherein, The method further comprises: obtaining uplink-downlink slot ratio determined by the network-side device according to terminals within a coverage range of the relay node device.

23. A network-side device, comprising: The apparatus comprises a transceiver configured to: send control information to a relay node device; wherein the control information comprises spatial-related information and / or transmission resources for data transmission by the relay node device; and wherein the apparatus further comprises a processor configured to determine terminals within a coverage range of the relay node device; wherein the control information sent by the transceiver to the relay node device comprises spatial-related information and / or transmission resources for data transmission by the relay node device to the terminals within the coverage range.

24. A relay node device, comprising: The apparatus comprises a transceiver configured to: receive control information sent by a network-side device; wherein the control information comprises spatial-related information and / or transmission resources for data transmission by the relay node device; and wherein the received control information comprises spatial-related information and / or transmission resources for data forwarding by the relay node device to terminals within a coverage range.

25. A device for relaying data transmission, applied to a network side equipment, characterized in that, The apparatus comprises: a sending module configured to send control information to a relay node device; and a receiving module configured to receive control information sent by a network-side device. The control information comprises spatial related information and / or transmission resource for data transmission by the relay node device. The method further comprises: determining a terminal located within the coverage range of the relay node device; The control information sent by the sending module to the relay node device comprises spatial related information and / or transmission resource for data transmission by the relay node device to the terminal located within the coverage range.

26. A relay data transmission apparatus applied to a relay node device, comprising: The apparatus comprises: a receiving module configured to receive control information sent by a network side device; The control information comprises spatial related information and / or transmission resource for data transmission by the relay node device; and the received control information comprises spatial related information and / or transmission resource for data forwarding by the relay node device to a terminal located within the coverage range.

27. A network device, comprising: The apparatus comprises: a processor, a memory, and a program stored in the memory and executable in the processor, the program being executed by the processor to implement the method of relaying data transmission according to any one of claims 1 to 12, or to implement the method of relaying data transmission according to any one of claims 13 to 22.

28. A readable storage medium, characterized by, The readable storage medium stores a program, the program being executed by the processor to implement the steps of the method of relaying data transmission according to any one of claims 1 to 12, or to implement the steps of the method of relaying data transmission according to any one of claims 13 to 22.

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