CN111491387B

CN111491387B - Data transmission method, device, related equipment and storage medium

Info

Publication number: CN111491387B
Application number: CN201910081995.1A
Authority: CN
Inventors: 郑毅; 吴丹; 董静; 侯雪颖; 王启星; 刘光毅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2023-05-09
Anticipated expiration: 2039-01-28
Also published as: CN111491387A

Abstract

The invention discloses a data transmission method, a data transmission device, related equipment and a storage medium. The method comprises the following steps: transmitting the time domain and/or frequency domain resources for transmitting the first information to a second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources.

Description

Data transmission method, device, related equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a data transmission method, apparatus, related device, and storage medium.

Background

With the development of communication technology, the fifth generation mobile communication (5G,Fifth Generation) system can operate at a large bandwidth of 100MHz to 400MHz, and can increase a higher system rate, which provides a condition for application of an integrated access and backhaul (IAB, integrated Access and Backhaul) base station. The IAB base station means that the base station integrates an access link and a backhaul link, and in the 5G system, the access link may refer to a communication link between the IAB base station and a terminal, and the backhaul link may refer to a communication link between the IAB base station and a next generation node B (gNB) base station.

Currently, when the gcb base station performs uplink scheduling of the backhaul link to the IAB base station, if data transmission on the backhaul link is scheduled on the same resource as the necessary information for serving the own cell transmitted on the access link, it cannot be ensured that data transmission on the access link and data transmission on the backhaul link are performed simultaneously.

Disclosure of Invention

In order to solve the existing technical problems, the embodiment of the invention provides a data transmission method, a data transmission device, related equipment and a storage medium.

The technical scheme of the embodiment of the invention is realized as follows:

the embodiment of the invention provides a data transmission method, which comprises the following steps:

transmitting the time domain and/or frequency domain resources for transmitting the first information to a second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources.

In the above scheme, the first information is information required by the first base station to serve the cell.

In the above solution, the sending the time domain and/or frequency domain resource for transmitting the first information to the second base station includes:

transmitting the time domain and/or frequency domain resources to a second base station through an X2 interface;

or, transmitting the time domain and/or frequency domain resources to a second base station through high-layer signaling;

or, transmitting the time domain and/or frequency domain resources to a second base station through MSG 3;

or, transmitting the time domain and/or frequency domain resources to a second base station through an uplink physical layer channel;

or, the time and/or frequency domain resources are transmitted to the second base station by a medium access Control (MAC, media Access Control) Control Unit (CE, control Unit).

In the above aspect, the first information includes at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

demodulation reference symbols (DMRS, demodulationReference Sgnal);

uplink data;

downstream data.

The embodiment of the invention provides a data transmission method, which is applied to a second base station and comprises the following steps:

acquiring time domain and/or frequency domain resources of first information from a first base station; the first base station is a child node of the second base station;

And determining other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the first base station and the first base station by utilizing the time domain and/or frequency domain resources so as to control the data transmission of the link on the other resources.

In the above solution, the controlling the data transmission of the link on the other resources includes:

and controlling the uplink scheduling of the link to be performed on the other resources.

In the above solution, the controlling to perform uplink scheduling of the link on the other resources includes:

controlling the uplink scheduling of the link on the time domain resource of the other resources;

or alternatively, the process may be performed,

and controlling the uplink scheduling of the link to be performed on the frequency domain resources of the other resources.

In the above solution, when the data transmission controlling the link is performed on the other resources, the method further includes:

determining partial Bandwidth (BWP) information of the link, where resources corresponding to the BWP information do not include the time domain and/or frequency domain resources;

And transmitting the BWP information to the first base station.

based on rate matching, data is placed on the other resources for data transmission of the link.

The embodiment of the invention provides a data transmission method, which is applied to a first base station and comprises the following steps:

and when determining that the second base station performs uplink scheduling or downlink transmission on the time domain and/or frequency domain resources of the first information, not performing transmission of the first information to the terminal, or not processing the uplink scheduling or downlink transmission of the second base station.

and carrying out uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resources for transmitting the first information by the first base station.

An embodiment of the present invention provides a data transmission device, applied to a first base station, including:

A transmitting unit, configured to transmit time-domain and/or frequency-domain resources for transmitting the first information to the second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources.

In the above solution, the sending unit is specifically configured to: transmitting the time domain and/or frequency domain resources to a second base station through an X2 interface; or, transmitting the time domain and/or frequency domain resources to a second base station through high-layer signaling; or, transmitting the time domain and/or frequency domain resources to a second base station through MSG 3; or, transmitting the time domain and/or frequency domain resources to a second base station through an uplink physical layer channel; or, transmitting the time domain and/or frequency domain resources to the second base station through the MAC CE.

An embodiment of the present invention provides a data transmission device, applied to a second base station, including:

an acquisition unit, configured to acquire time domain and/or frequency domain resources of the first information from the first base station; the first base station is a child node of the second base station;

And the control unit is used for determining other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the control unit and the first base station by utilizing the time domain and/or frequency domain resources so as to control the data transmission of the link on the other resources.

In the above solution, the control unit is specifically configured to: and controlling the uplink scheduling of the link to be performed on the other resources.

and the first transmission unit is used for not transmitting the first information to the terminal or not processing the uplink scheduling or downlink transmission of the second base station when determining that the second base station performs the uplink scheduling or downlink transmission of the first information on the time domain and/or frequency domain resources of the first information.

and the second transmission unit is used for carrying out uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resources for transmitting the first information by the first base station.

An embodiment of the present invention provides a first base station, including:

A first communication interface for transmitting time-domain and/or frequency-domain resources for transmitting the first information to the second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources.

The embodiment of the invention provides a second base station, which comprises:

a second communication interface for acquiring time domain and/or frequency domain resources of the first information from the first base station; the first base station is a child node of the second base station;

and the second processor is used for determining other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second processor and the first base station by utilizing the time domain and/or frequency domain resources so as to control the data transmission of the link on the other resources.

and the third processor is used for not transmitting the first information to the terminal or not processing the uplink scheduling or downlink transmission of the second base station when determining that the second base station performs the uplink scheduling or downlink transmission of the first information on the time domain and/or frequency domain resources of the first information.

and the fourth processor is used for carrying out uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resources for transmitting the first information by the first base station.

An embodiment of the present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any one of the first base station side data transmission methods described above, or implements the steps of any one of the second base station side data transmission methods described above.

The data transmission method, the device, the system, the related equipment and the storage medium provided by the embodiment of the invention send the time domain and/or frequency domain resources for transmitting the first information to the second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources. In the embodiment of the invention, the first base station sends the time domain and/or frequency domain resources of the first information to the second base station, so that the second base station can determine other resources except the time domain and/or frequency domain resources from the resources corresponding to the link, and perform data transmission of the link on the other resources, that is, the second base station cannot perform uplink service scheduling and downlink transmission on the first base station on the time domain and/or frequency domain resources, thereby ensuring that the resources occupied by the first base station for transmitting the first information to the terminal are different from the resources occupied by the second base station for performing the data transmission of the link, and ensuring that the data transmission on the access link and the data transmission on the backhaul link are performed simultaneously.

Drawings

FIG. 1 is a diagram of a related art data backhaul;

FIG. 2a is a schematic diagram of a time division multiplexing method in the related art;

FIG. 2b is a schematic diagram of a related art frequency division multiplexing mode;

FIG. 2c is a schematic diagram of a related art spatial multiplexing method;

fig. 3 is a schematic diagram of a space division multiplexing manner of an access link and a backhaul link in the related art;

fig. 4 is a schematic diagram of data transmission on an access link and a backhaul link in the related art;

fig. 5a is a schematic diagram of transmission power of a Single Side Band (SSB) occupied by spatial multiplexing in the related art;

fig. 5b is a schematic diagram of the necessary information for spatial multiplexing to avoid access link transmission in the related art;

fig. 6 is a flowchart of a data transmission method according to an embodiment of the invention;

fig. 6a is a schematic diagram of uplink scheduling performed by the second base station on the first base station according to the embodiment of the present invention;

fig. 7 is a second flow chart of a data transmission method according to an embodiment of the invention;

fig. 8 is a flowchart illustrating a data transmission method according to an embodiment of the present invention;

fig. 9 is a flowchart of a data transmission method according to an embodiment of the present invention;

fig. 10 is a flowchart of a data transmission method according to an embodiment of the present invention;

Fig. 11 is a schematic diagram of a composition structure of a data transmission device according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a second structure of a data transmission device according to an embodiment of the present invention;

fig. 13 is a schematic diagram of a third component structure of a data transmission device according to an embodiment of the present invention;

fig. 14 is a schematic diagram of a data transmission device according to an embodiment of the present invention;

fig. 15 is a schematic diagram of a first component structure of a first base station according to an embodiment of the present invention;

fig. 16 is a schematic diagram of a composition structure of a second base station according to an embodiment of the present invention;

fig. 17 is a schematic diagram of a second component structure of a first base station according to an embodiment of the present invention;

fig. 18 is a schematic diagram of a second structure of a second base station according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

In the related art, the third generation partnership project (3GPP,the 3rd Generation Partnership Project) introduces a self-return technology, replaces optical fiber return by high-frequency air-interface transmission, and can return data to a site with optical fiber transmission capability through a multi-hop link; how resources are allocated on backhaul links (backhaul links) and access links (access links) becomes an important discussion point; the resource allocation method includes time division multiplexing (TDM, time Division Multiplex), frequency division multiplexing (FDM, frequency Division Multiplexing), and space division multiplexing (SDM, space Division Multiplex) multiplexing methods. Fig. 1 is a schematic diagram of data Backhaul in the related art, as shown in fig. 1, an Access Link (AL) is disposed between a base station and a terminal (UE), and a Backhaul Link (BL) is disposed between base stations. Fig. 2a is a schematic diagram of TDM multiplexing in the related art, fig. 2b is a schematic diagram of FDM multiplexing in the related art, and fig. 2c is a schematic diagram of SDM multiplexing in the related art.

In order to ensure full utilization of resources, the multiplexing mode of the access link and the backhaul link may be set to be space division multiplexing, so that data transmission on the backhaul link and data transmission on the access link may be performed simultaneously. Fig. 3 is a schematic diagram of spatial multiplexing of an Access Link and a backhaul Link in the related art, as shown in fig. 3, where the Access Link is disposed between an IAB base station and a UE, and the backhaul Link is disposed between a gNB base station and an IAB base station, and by setting a multiplexing manner of the Access Link and the backhaul Link to spatial multiplexing, it is ensured that the IAB base station performs data transmission on the backhaul Link and the Access Link simultaneously when transmitting data to the gNB or transmitting data to the UE, however, the spatial multiplexing manner occupies power for transmitting information such as SSB, thereby reducing transmission power of information such as SSB, and causing problems of shrinkage of coverage area of the base station and fluctuation of measurement reference power.

Fig. 4 is a schematic diagram of data transmission on an access link and a backhaul link in the related art, where, as shown in fig. 4, the access link is disposed between an IAB-1 base station and a UE2, and the backhaul link is disposed between the IAB-1 base station and a gNB. In order to ensure that the IAB-2 base station served by the IAB-1 base station and the UE2 can operate normally, the IAB-1 base station needs to send SSB, keep minimum system information (RMSI, remaining Minimum System Information), necessary information such as channel state information Reference Signal (CSI-RS, channel State Information-Reference Signal), and the like to the IAB-2 base station and the UE2, and also needs to reserve some resource positions for the IAB-2 base station and the UE 2. Because gNB will not synchronize with IAB-2 base station and will not read the broadcast information of IAB-1, gNB will not know the time-frequency resource occupied by the information of SSB, RMSI, CSI-RS, etc. transmitted by IAB-1 base station. When the time-frequency resource occupied by the information such as SSB, RMSI, CSI-RS transmitted on the access link is the same as the time-domain resource occupied by the data transmission performed by the backhaul link, the multiplexing mode of the access link and the backhaul link may be set to be space division multiplexing, as shown in fig. 5a, however, the space division multiplexing mode occupies the power for transmitting the information such as SSB, thereby reducing the transmission power of the information such as SSB, and causing the problems of the coverage area shrinkage of the base station and the fluctuation of the measurement reference power. Obviously, the gNB is not capable of performing uplink scheduling and data transmission of the backhaul link to the IAB-1 base station at any resource location, and when the gNB performs uplink scheduling and data transmission of the backhaul link, it is necessary to avoid necessary information such as SSB, RMSI, CSI-RS transmitted on the access link, as shown in fig. 5 b.

In the above manner, when the gcb base station performs uplink scheduling of the backhaul link to the IAB base station, if the data transmission on the backhaul link is scheduled on the same resource as the necessary information for serving the own cell transmitted on the access link, it cannot be ensured that the data transmission on the access link and the data transmission on the backhaul link are performed simultaneously.

Based on this, in the embodiment of the present invention, the time domain and/or frequency domain resource for transmitting the first information is sent to the second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the backhaul link on the other resources.

An embodiment of the present invention provides a data transmission method, applied to a first base station, as shown in fig. 6, where the method includes:

step 601: and transmitting the time domain and/or frequency domain resources for transmitting the first information to the second base station.

The first information may be information required by the first base station to serve the cell. In other words, the first information is information required for serving the own cell transmitted on the access link. The time-frequency resources may be represented by frames, subframes, time slots, orthogonal frequency division multiplexing (OFDM, orthogonal Frequency Division Multiplexing) symbols, and the frequency-domain resources may be represented by subcarriers occupied in the frequency domain.

The first base station may also determine time and/or frequency domain resources for transmitting the first information prior to step 601.

Here, the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources. A backhaul link may be provided between the first base station and the second base station. The first base station may be an IAB base station; the second base station may be a normal base station or an IAB base station. In the 5G system, the second base station may be a gNB.

In practical applications, since the information for serving the cell transmitted on the access link between the first base station and the terminal may include a plurality of pieces, the first information may be the necessary information for serving the cell by the first base station.

Based on this, the first information may include at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

Uplink data;

downstream data.

Wherein the synchronous broadcast channel may include: PBCH, etc.; the synchronized broadcast information may include: SS, SSB, etc.; the system information may include: RMSI, etc.; the downlink reference signal may include: CSI-RS, etc.; the uplink random access channel may include: physical random access channel (PRACH, physical Random Access CHannel).

Here, the time-frequency resource of the first information may include a time-domain resource and a frequency-domain resource, and when at least one of the time-frequency resources of the first information is determined, the second base station may determine other resources different from the resources occupied by transmitting the first information.

Based on this, for the first information, the determined time-frequency resource may be only a time-domain resource, or may be only a frequency-domain resource, or may be a time-domain resource and a frequency-domain resource.

In practical application, because in the communication network, two base stations can be connected with each other through an X2 interface, and data and signaling can be transmitted between the two base stations through the X2 interface, time domain and/or frequency domain resources can be sent to the second base station through the X2 interface between the first base station and the second base station, so that the second base station can determine the other resources.

Based on this, in an embodiment, the transmitting the determined time-domain and/or frequency-domain resources to the second base station includes: and transmitting the determined time domain and/or frequency domain resources to the second base station through the X2 interface.

In practical application, in the mobile communication system, the first base station and the second base station may transmit a high-layer signaling, where the high-layer signaling may refer to a signaling transmitted between a child node and a highest-layer protocol body of a previous-level node. In this way, the first base station may carry the determined time and/or frequency domain resources in higher layer signaling such as radio resource control (RRC, radio Resource Control) connection reconfiguration messages and send to the second base station for the second base station to determine the other resources.

Based on this, in an embodiment, the transmitting the determined time-domain and/or frequency-domain resources to the second base station includes: and transmitting the determined time domain and/or frequency domain resources to the second base station through the high-layer signaling.

In practical application, when the first base station is scheduled by the second base station, the first base station may transmit MSG3 on the allocated uplink resource, so that the determined time domain and/or frequency domain resource may be carried in MSG3 and sent to the second base station, so that the second base station determines the other resources.

Based on this, in an embodiment, the transmitting the determined time-domain and/or frequency-domain resources to the second base station includes: and sending the determined time domain and/or frequency domain resources to the second base station through MSG 3.

In practical application, under the working mode of the control center, the control center can perform resource configuration of the first information on the first base station, such as an IAB base station, through the control center, such as a gNB or a donor or a Central Unit (CU), so that the control center can send the time domain and/or frequency domain resources of the first information transmitted by the first base station to the second base station, such as an IAB base station.

Based on this, in an embodiment, the transmitting the determined time-domain and/or frequency-domain resources to the second base station includes: and transmitting the determined time domain and/or frequency domain resources to the second base station through the control center.

In practical application, the first base station may send the determined time domain and/or frequency domain resources to the second base station through a channel of the physical layer.

Based on this, in an embodiment, the transmitting the determined time-domain and/or frequency-domain resources to the second base station includes: and transmitting the determined time domain and/or frequency domain resources to the second base station through the uplink physical layer channel.

Here, the uplink physical layer channel may include: physical Random Access Channel (PRACH), physical Uplink Control Channel (PUCCH), physical Uplink Shared Channel (PUSCH), and so forth.

In practical application, the first base station may send the determined time domain and/or frequency domain resources to the second base station through the MAC layer.

Based on this, in an embodiment, the transmitting the determined time-domain and/or frequency-domain resources to the second base station includes: and transmitting the determined time domain and/or frequency domain resources to the second base station through the MAC CE.

Specifically, the determined time domain and/or frequency domain resources may be placed in the MAC CE, and after being encapsulated into a MAC PDU, sent to the second base station.

Here, after the first base station transmits the time-domain and/or frequency-domain resources to the second base station, the second base station may determine other resources than the time-domain and/or frequency-domain resources among the resources corresponding to the link between itself and the first base station, so as to control data transmission of the link on the other resources. Fig. 6a is a schematic diagram of the second base station performing uplink scheduling on the first base station, as shown in fig. 6a, block 1 may represent a resource block occupied by the time domain and/or frequency domain resources, and block 2 may represent resources corresponding to a link between the second base station and the first base station. And the first base station is not subjected to uplink scheduling on the time domain and/or frequency domain resources corresponding to the second base station block 1.

By adopting the technical scheme of the embodiment of the invention, after the first base station sends the determined time domain and/or frequency domain resources to the second base station, the first base station can determine that the second base station cannot schedule and transmit downlink to the second base station on the time domain and/or frequency domain resources, in other words, the first base station cannot expect the second base station to schedule uplink and transmit downlink to the second base station on the time domain and/or frequency domain resources. After the second base station receives the time domain and/or frequency domain resources sent by the first base station, other resources except the time domain and/or frequency domain resources are determined from the resources corresponding to the link, and data transmission of the link is performed on the other resources, so that the resources occupied by the first base station for transmitting first information to a terminal are ensured to be different from the resources occupied by the second base station for performing data transmission of the link, and therefore collision between the resources occupied by the first information and the resources occupied by uplink scheduling of the link is avoided, and therefore, data transmission on an access link and data transmission on a return link can be performed simultaneously.

Correspondingly, the embodiment of the invention also provides a data transmission method, which is applied to the second base station, as shown in fig. 7, and comprises the following steps:

step 701: time and/or frequency domain resources of the first information are acquired from the first base station.

Here, the first information may be information required for the first base station to serve the own cell. In other words, the first information is information required for serving the own cell transmitted on the access link. The first base station is a child node of the second base station.

The time-frequency resource can be represented by a frame, a subframe, a time slot and an OFDM symbol, and the frequency-domain resource can be represented by a subcarrier occupied on a frequency domain.

Here, the first base station and the second base station may be a normal base station or an IAB base station. When the first base station and the second base station are both IAB base stations, the first base station may be a child IAB base station, and the second base station may be a parent IAB base station. In the 5G system, the second base station may be a gNB.

Here, the second base station may receive the time domain and/or frequency domain resources transmitted by the first base station through an X2 interface, higher layer signaling, MSG3, an uplink physical layer channel, MAC CE, and the like.

Step 702: and determining other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the first base station and the first base station by utilizing the time domain and/or frequency domain resources so as to control the data transmission of the link on the other resources.

Here, a backhaul link may be provided between the first base station and the second base station. The data transmission of the backhaul link on the other resources may refer to uplink scheduling of the backhaul link by the second base station on the other resources, or may refer to that the second base station sends data to the first base station on the other resources.

In practical application, if the time domain and/or frequency domain resources occupied by the first information transmitted on the access link are different from the resources occupied by the uplink scheduling or data transmission performed on the backhaul link, when the access link and the backhaul link are multiplexed, the first base station can perform uplink scheduling or downlink transmission of the backhaul link and also can transmit the first information to the terminal.

Based on this, in an embodiment, the controlling the data transmission of the backhaul link on the other resources includes: and controlling the uplink scheduling of the backhaul link to be performed on the other resources.

In practical application, if the first base station sends only the time domain resource to the second base station, when the second base station performs uplink scheduling on the first base station, the second base station may perform uplink scheduling on the time domain resource of the other resources. If the first base station sends only the frequency domain resource to the second base station, when the second base station performs uplink scheduling on the first base station, the second base station may perform uplink scheduling on the frequency domain resource of the other resource.

Based on this, in an embodiment, the controlling uplink scheduling of the backhaul link on the other resources includes: controlling uplink scheduling of the backhaul link on time domain resources of the other resources; or controlling to perform uplink scheduling of the backhaul link on the frequency domain resource of the other resource.

The second base station does not perform uplink scheduling and downlink transmission on the first base station on the time domain and/or frequency domain resources of the first information.

In practical application to 5G, the concept of BWP is cited in the 5G system, i.e. the second base station may configure the first base station to operate only on a part of the bandwidth, e.g. 20MHz. By configuring BWP on other resources than the time-domain and/or frequency-domain resources, the second base station can perform uplink scheduling and downlink transmission on the first base station on the resources corresponding to the BWP, so that the time-domain and/or frequency-domain resources for transmitting the first information are not occupied, and the power consumption of the first base station can be saved.

Based on this, in an embodiment, when the data transmission controlling the backhaul link is performed on the other resources, the method further includes: determining BWP information of the link, wherein resources corresponding to the BWP information do not contain the time domain and/or frequency domain resources; and transmitting the BWP information to the first base station.

Here, the second base station transmits the BWP information to the first base station, and the first base station does not perform uplink scheduling and downlink transmission on the time domain and/or frequency domain resources by the second base station.

In practical applications, when the second base station sends data to the first base station, the data to be transmitted may not be placed on the time domain and/or frequency domain resources, but on the other resources except the time domain and/or frequency domain resources, so that the second base station may not perform downlink transmission on the time domain and/or frequency domain resources.

Based on this, in an embodiment, the controlling the data transmission of the link on the other resources comprises: based on rate matching, data is placed on the other resources for data transmission of the link.

By adopting the technical scheme of the embodiment of the invention, the second base station receives the time domain and/or frequency domain resources of the first information sent by the first base station, so that the second base station can determine other resources except the time domain and/or frequency domain resources from the resources corresponding to the link, and perform data transmission of the link on the other resources, that is, the second base station cannot perform uplink service scheduling and downlink transmission on the first base station on the time domain and/or frequency domain resources, thereby ensuring that the resources occupied by the first base station for transmitting the first information to the terminal are different from the resources occupied by the second base station for performing the data transmission of the link, and avoiding the conflict between the resources occupied by the first information and the resources occupied by the uplink scheduling of the link, and ensuring that the data transmission on an access link and the data transmission on a backhaul link are performed simultaneously.

An embodiment of the present invention provides a data transmission method, as shown in fig. 8, where the method includes:

step 801: the first base station determines time and/or frequency domain resources for transmitting the first information.

The first information may be information required by the first base station to serve the cell. In other words, the first information is information required for serving the own cell transmitted on the access link.

Synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

demodulation reference symbol DMRS;

uplink data;

downstream data.

Wherein the synchronous broadcast channel may include: PBCH, etc.; the synchronized broadcast information may include: SS, SSB, etc.; the system information may include: RMSI, etc.; the downlink reference signal may include: CSI-RS, etc.; the uplink random access channel may include: PRACH.

Step 802: and the first base station transmits the determined time domain and/or frequency domain resources to the second base station.

The first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources. A backhaul link may be provided between the first base station and the second base station.

Here, the first base station and the second base station may be a normal base station or an IAB base station. In the 5G system, the second base station may be a gNB.

Here, the first base station may transmit the determined time domain and/or frequency domain resources to the second base station through an X2 interface, higher layer signaling, MSG3, an uplink physical layer channel, MAC CE, and the like.

Step 803: the second base station obtains time domain and/or frequency domain resources of the first information from the first base station.

Here, a backhaul link may be provided between the first base station and the second base station.

Step 804: and the second base station determines other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station by utilizing the time domain and/or frequency domain resources so as to control the data transmission of the link on the other resources.

Here, the control of the data transmission of the link on the other resources specifically includes the following three cases:

in the first case, the second base station does not perform uplink scheduling of the backhaul link on the time domain and/or frequency domain resources, but performs uplink scheduling of the backhaul link on the time domain resources of the other resources.

In the second case, the second base station may determine BWP information of the link, where resources corresponding to the BWP information do not include the time domain and/or frequency domain resources; and transmitting the BWP information to the first base station. In this way, the second base station can perform uplink scheduling and downlink transmission on the resources corresponding to the BWP, which not only does not occupy the time domain and/or frequency domain resources for transmitting the first information, but also can save the power consumption of the first base station.

In a third case, when the second base station sends data to the first base station, the data to be transmitted may be placed not on the time domain and/or frequency domain resources but on the other resources except the time domain and/or frequency domain resources based on rate matching, so that the second base station may not perform uplink scheduling on the first base station on the time domain and/or frequency domain resources.

It should be noted that: the specific processing procedures of the first base station and the second base station are described in detail above, and are not described here again.

According to the data transmission method provided by the embodiment of the invention, the first base station sends the time domain and/or frequency domain resources of the first information to the second base station, so that the second base station can not transmit the data of the link to the first base station on the time domain and/or frequency domain resources, the resources occupied by the first base station for transmitting the first information to the terminal are different from the resources occupied by the second base station for transmitting the data of the link, and the data transmission on the access link and the data transmission on the backhaul link can be ensured to be performed simultaneously.

In an ideal state, the second base station does not perform uplink scheduling or downlink data transmission on the time domain and/or frequency domain resources of the first information, but in practical application, when the second base station is in a non-ideal state, the second base station may perform uplink scheduling or downlink data transmission on the first base station on the time domain and/or frequency domain resources of the first information, and therefore, according to an embodiment of the present invention, as shown in fig. 9, the method is applied to the first base station, and includes:

step 901: and judging whether the second base station performs uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resources of the first information.

It should be noted that step 901 is optional.

Here, the first base station may be an IAB base station.

Since the information for serving the own cell transmitted on the access link of the first base station and the terminal may include a plurality of pieces, the necessary information for serving the own cell by the first base station may be used as the first information.

Based on this, the first information may include at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

downstream data.

In actual application, when the second base station performs uplink scheduling on the first base station, the second base station may send scheduling information to the first base station; the scheduling information may include a control instruction, where the control instruction is used to instruct the first base station to perform uplink transmission on a resource used by the first base station. After receiving the scheduling information, the first base station judges whether the resources used for uplink transmission are the same as the time domain and/or frequency domain resources of the first information; and when the two are determined to be the same, determining that the second base station carries out uplink scheduling on the first base station on the time domain and/or frequency domain resources of the first information.

Likewise, when the second base station performs downlink transmission on the first base station, the second base station may send downlink transmission information to the first base station; the downlink transmission information may include resources used for downlink transmission. After the first base station receives the downlink transmission information, judging whether resources used for downlink transmission are the same as time domain and/or frequency domain resources of the first information; and when the two are determined to be the same, determining that the second base station performs downlink transmission on the first base station on the time domain and/or frequency domain resources of the first information.

Step 902: and when determining that the second base station performs uplink scheduling or downlink transmission on the time domain and/or frequency domain resources of the first information, not performing transmission of the first information to the terminal, or not processing the uplink scheduling or downlink transmission of the second base station.

By adopting the technical scheme of the embodiment of the invention, the second base station may perform uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resources under the condition that the second base station cannot use the other resources, and in order to avoid collision between the resources occupied by the transmission of the first information on the access link and the resources occupied by the data transmission of the link by the second base station, the first base station may not transmit the first information to the terminal; or the first base station ignores uplink scheduling or downlink transmission of the second base station.

Correspondingly, an embodiment of the present invention provides a data transmission method, as shown in fig. 10, applied to a second base station, where the method includes:

step 1001: time and/or frequency domain resources of the first information are acquired from the first base station.

It should be noted that step 1001 is optional.

Here, the first base station may be an IAB base station.

Based on this, the first information may include at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

Uplink data;

downstream data.

Here, the first base station may transmit time and/or frequency domain resources of the first information to the second base station, so that the second base station may determine the time and/or frequency domain resources of the first base station transmitting the first information.

Step 1002: and carrying out uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resources for transmitting the first information by the first base station.

In practical applications, the second base station may perform uplink scheduling or downlink transmission on the time domain and/or frequency domain resources in the case that the other resources cannot be used,

specifically, when the second base station performs uplink scheduling on the first base station, the second base station may send scheduling information to the first base station; the scheduling information may include a control instruction, where the control instruction is used to instruct the first base station to perform uplink transmission on a resource used by the first base station. When the second base station performs downlink transmission on the first base station, the second base station can send downlink transmission information to the first base station; the downlink transmission information may include a downlink control instruction and data, and the downlink transmission information may further include resources used by the second base station for downlink transmission.

Embodiments of the present invention will be described in further detail below in conjunction with application examples.

Application example one

In this application embodiment, the sub-IAB base station corresponds to the first base station, and the previous stage IAB base station or the gNB corresponds to the second base station.

In this application embodiment, the determined first information is a global synchronization channel number (GSCN, global Synchronization Channel Number) and RMSI, and the sub-IAB base station sends the frequency domain resource of the GSCN and the frequency domain resource of the RMSI to the upper-level IAB base station or the gNB. After receiving the frequency domain resources of the GSCN and the frequency domain resources of the RMSI reported by the sub-IAB base stations, the upper-level IAB base station or the gNB determines other resources except the frequency domain resources occupied by the SSB and the RMSI from the resources corresponding to the backhaul link, and does not perform uplink scheduling of the backhaul link on the frequency domain resources occupied by the SSB and the RMSI, but performs uplink scheduling of the backhaul link on the other resources. In this way, the resources occupied by the first base station for transmitting the first information to the terminal and the resources occupied by the second base station for uplink scheduling do not collide, so that the data transmission on the access link and the data transmission on the backhaul link are ensured to be performed simultaneously.

Application example II

In this application embodiment, the sub-IAB base station corresponds to the first base station, and the upper-level IAB base station corresponds to the second base station.

In this application embodiment, if the sub-IAB base station and the previous-stage IAB base station operate at the same frequency point, and the synchronization symbols of the two base stations, such as SSB, operate at the same time-frequency resource. The sub-IAB base station only needs to report the frequency domain resource of RMSI to the previous base station. The upper-level IAB base station determines other resources except the time-frequency resources occupied by SSB and the frequency domain resources occupied by RMSI from the resources corresponding to the backhaul link, does not carry out uplink scheduling of the backhaul link on the time-frequency resources occupied by SSB and the frequency domain resources occupied by RMSI, and carries out uplink scheduling of the backhaul link on the other resources, so that the resources occupied by the first base station for transmitting the first information to the terminal and the resources occupied by the second base station for carrying out uplink scheduling do not conflict, thereby ensuring that data transmission on an access link and data transmission on the backhaul link are carried out simultaneously.

Application example III

In this application embodiment, the sub-IAB base station sends the time domain resource and the frequency domain resource of the downlink CSI-RS required for serving the cell to the upper-level IAB base station through the higher-layer information or the X2 interface. Under the condition that other resources cannot be used by the upper-level IAB base station, uplink scheduling of the sub-IAB base station can be performed on time domain resources of the CSI-RS, the sub-IAB base station can ignore the uplink scheduling of the second base station, and specifically, data which are returned are not placed on the time domain resources for transmitting the necessary information such as the CSI-RS, SSB, RMSI through rate matching. In this way, the resources occupied by the first base station for transmitting the first information to the terminal and the resources occupied by the second base station for uplink scheduling do not collide, so that the data transmission on the access link and the data transmission on the backhaul link are ensured to be performed simultaneously.

Application example IV

In this application embodiment, the sub-IAB base station sends a time domain resource, such as a time slot or a symbol, of an uplink random access opportunity (RACH occalation) required for the serving cell to the upper-level IAB base station. The upper-level IAB base station does not carry out uplink scheduling on the sub-IAB base station on the time slot or the symbol corresponding to the RACH occalation, so that the sub-IAB base station only receives uplink random access information transmitted on an access link on the time slot or the symbol corresponding to the RACH occalation, thereby ensuring that data transmission on the access link and data transmission on a backhaul link are carried out simultaneously.

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a data transmission device, which is disposed on the first base station, as shown in fig. 11, and the device includes:

a transmitting unit 111, configured to transmit the time domain and/or frequency domain resource for transmitting the first information to the second base station.

In one embodiment, the apparatus comprises:

the first determining unit 112 is configured to determine a time domain and/or frequency domain resource for transmitting the first information.

Here, the first base station may be an IAB base station. The first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources. A backhaul link may be provided between the first base station and the second base station.

Based on this, the first information may include at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

downstream data.

Wherein the synchronous broadcast channel may include: PBCH, etc.; the synchronized broadcast information may include: SS, SSB, etc.; the system information may include: RMSI, etc.; the downlink reference signal may include: CSI-RS, etc.; the uplink random access channel may include: physical random access channels.

In an embodiment, the sending unit 111 is specifically configured to send the determined time domain and/or frequency domain resource to the second base station through the X2 interface; or, transmitting the determined time domain and/or frequency domain resources to the second base station through the higher layer signaling; or, transmitting the determined time domain and/or frequency domain resources to the second base station through the MSG 3; or, transmitting the determined time domain and/or frequency domain resources to the second base station through the uplink physical layer channel; or, transmitting the determined time domain and/or frequency domain resources to the second base station through the MAC CE.

Here, in the working mode of the control center, such as the gNB or the donor or the CU, may perform the resource configuration of the first information on the first base station, such as the IAB base station, so that, through the control center, such as the gNB or the donor or the CU, the time domain and/or frequency domain resource of the first base station for transmitting the first information may be sent to the second base station, such as the IAB base station.

In practical application, the sending unit 111 may be implemented by a communication interface in a data transmission device; the first determination unit 112 may be implemented by a processor in the data transmission device.

It should be noted that: in the data transmission device provided in the above embodiment, only the division of each program module is used for illustration, and in practical application, the processing allocation may be performed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processing described above. In addition, the data transmission device provided in the above embodiment and the data transmission method embodiment on the first base station side belong to the same concept, and detailed implementation processes of the data transmission device are shown in the method embodiment, and are not repeated here.

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a data transmission device, which is disposed on the second base station, as shown in fig. 12, and the device includes:

An obtaining unit 121 is configured to obtain time domain and/or frequency domain resources of the first information from the first base station.

And a control unit 122, configured to determine, using the time domain and/or frequency domain resources, other resources than the determined time domain and/or frequency domain resources in the resources corresponding to the backhaul link, so as to control data transmission of the backhaul link on the other resources.

Here, the first base station and the second base station may be a normal base station or an IAB base station. When the first base station and the second base station are both IAB base stations, the first base station may be a child IAB base station, and the second base station may be a parent IAB base station. In a 5G system, the second base station may be a next generation node B (gNB).

Based on this, in an embodiment, the control unit 122 is specifically configured to: and controlling the uplink scheduling of the backhaul link to be performed on the other resources.

Based on this, in an embodiment, the control unit 122 is specifically configured to: determining BWP information of the link, wherein resources corresponding to the BWP information do not contain the time domain and/or frequency domain resources; and transmitting the BWP information to the first base station.

Here, the second base station transmits BWP information, which does not include the time domain and/or frequency domain resources, to the first base station, and the first base station does not perform uplink scheduling and downlink transmission on the time domain and/or frequency domain resources by the second base station.

Based on this, in an embodiment, the control unit 122 is specifically configured to: based on rate matching, data is placed on the other resources for data transmission of the link.

In practical applications, the control unit 122 may be implemented by a processor in the data transmission device, and the obtaining unit 121 may be implemented by a communication interface in the data transmission device.

It should be noted that: in the data transmission device provided in the above embodiment, only the division of each program module is used for illustration, and in practical application, the processing allocation may be performed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processing described above. In addition, the data transmission device provided in the above embodiment and the data transmission method embodiment on the second base station side belong to the same concept, and the specific implementation process is detailed in the method embodiment, which is not repeated here.

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a data transmission device, which is disposed on the first base station, as shown in fig. 13, and the device includes:

the first transmission unit 131 is configured to, when determining that the second base station performs uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resource of the first information, not perform transmission of the first information to the terminal, or not process uplink scheduling or downlink transmission of the second base station. The downlink transmission may refer to downlink data transmission.

In one embodiment, the apparatus comprises:

a judging unit 132, configured to judge whether the second base station performs uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resource of the first information.

Specifically, when the second base station performs uplink scheduling or downlink transmission on the first base station, the used resource may be sent to the first base station, so that the determining unit 132 may determine whether the second base station performs uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resource of the first information.

Here, the first base station may be an IAB base station.

Based on this, the first information may include at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

downstream data.

In practical application, the first transmission unit 131 and the judging unit 132 may be implemented by a processor in the data transmission device.

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a data transmission device, which is disposed on a second base station, as shown in fig. 14, and the device includes:

the second transmission unit 141 is configured to perform uplink scheduling or downlink transmission on a time domain and/or frequency domain resource for transmitting the first information by the first base station.

In an embodiment, the device further comprises:

a receiving unit 142, configured to receive time domain and/or frequency domain resources of the first information sent by the first base station.

It should be noted that, when the second base station is in a non-ideal state, the second base station may perform uplink scheduling or downlink transmission on the time domain and/or frequency domain resources to the first base station.

Here, the first base station may be an IAB base station.

Based on this, the first information may include at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

downstream data.

Based on the hardware implementation of each program module, in order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a first base station, as shown in fig. 15, where the first base station 150 includes:

The first processor 151 is connected to the first communication interface 152, so as to implement information interaction with the second base station, and is configured to execute the methods provided by one or more of the above technical solutions when running a computer program. And the computer program is stored on the first memory 153;

the first communication interface 152 is capable of information interaction with the second base station.

In practice, the various components in the first base station 150 are coupled together by a bus system 154. It is understood that the bus system 154 is used to enable connected communications between these components. The bus system 154 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration, the various buses are labeled as bus system 154 in fig. 15.

The first memory 153 in the embodiment of the present invention is used to store various types of data to support the operation of the first base station 150.

The method disclosed in the above embodiment of the present invention may be applied to the first processor 151 or implemented by the first processor 151. The first processor 151 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the first processor 151 or instructions in the form of software. The first processor 151 described above may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 151 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 153 and the first processor 151 reads information in the first memory 153 to perform the steps of the method described above in connection with its hardware.

In an exemplary embodiment, the first base station 150 may be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSPs, programmable logic devices (PLD, programmable Logic Device), complex programmable logic devices (CPLD, complex Programmable Logic Device), field-programmable gate arrays (FPGA, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCU, micro Controller Unit), microprocessors (Microprocessor), or other electronic components for performing the aforementioned methods.

In order to implement the method of the embodiment of the present invention and based on the hardware implementation of the program module, the embodiment of the present invention further provides a second base station, as shown in fig. 16, where the second base station 160 includes:

a second communication interface 161 capable of information interaction with the first base station;

and a second processor 162, connected to the second communication interface 161, for implementing information interaction with the first base station, for executing the methods provided by one or more of the above technical solutions when the computer program is run. And the computer program is stored on the second memory 163.

In practice, as shown in FIG. 16, the various components in the second base station 160 are coupled together by a bus system 164. It is understood that the bus system 164 is used to enable connected communications between these components. The bus system 164 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 164 in fig. 16.

The second memory 163 in the embodiment of the present invention is used to store various types of data to support the operation of the network device 80.

The method disclosed in the above embodiment of the present invention may be applied to the second processor 162 or implemented by the second processor 162. The second processor 162 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry of hardware in the second processor 162 or instructions in the form of software. The second processor 162 described above may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 162 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 163, the second processor 162 reading information in the second memory 163, in combination with its hardware, to perform the steps of the method as described above.

In an exemplary embodiment, the second base station 160 may be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general purpose processors, controllers, MCUs, microprocessors, or other electronic elements for performing the foregoing methods.

Based on the hardware implementation of each program module, in order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a first base station, as shown in fig. 17, where the first base station 170 includes:

the third processor 171 is connected to the third communication interface 172, so as to implement information interaction with the second base station, and is configured to execute the methods provided by one or more of the above technical solutions when running a computer program. And the computer program is stored on the third memory 173;

the third communication interface 172 is capable of information interaction with the second base station.

In practice, the various components in the first base station 170 are coupled together by a bus system 174. It is understood that the bus system 174 is employed to facilitate connected communication between such components. The bus system 174 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 174 in fig. 17.

The third memory 173 in the embodiment of the present invention is used to store various types of data to support the operation of the first base station 170.

The method disclosed in the above embodiment of the present invention may be applied to the third processor 171 or implemented by the third processor 171. The third processor 171 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in software form in the third processor 171. The third processor 171 described above may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The third processor 171 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the third memory 173, and the third processor 171 reads information in the third memory 173, and in combination with its hardware, performs the steps of the aforementioned method.

In order to implement the method of the embodiment of the present invention and based on the hardware implementation of the program module, the embodiment of the present invention further provides a second base station, as shown in fig. 18, where the second base station 180 includes:

a fourth communication interface 181 capable of information interaction with a terminal;

the fourth processor 182 is connected to the fourth communication interface 181, so as to implement information interaction with the first base station, and is configured to execute the methods provided by one or more of the above technical solutions when running a computer program. And the computer program is stored on the fourth memory 183.

In practice, as shown in FIG. 18, the various components in the second base station 180 are coupled together by a bus system 184. It is to be appreciated that the bus system 184 is employed to facilitate a coupled communication between these components. The bus system 184 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 184 in fig. 18.

The fourth memory 183 in the embodiment of the present invention is used to store various types of data to support the operation of the second base station 180.

The method disclosed in the above embodiment of the present invention may be applied to the fourth processor 182 or implemented by the fourth processor 182. The fourth processor 182 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry of hardware or instructions in software form in the fourth processor 182. The fourth processor 182 may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The fourth processor 182 may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the fourth memory 183, the fourth processor 182 reading information in the fourth memory 183, and performing the steps of the method described above in connection with its hardware.

In an exemplary embodiment, the second base station 180 may be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general-purpose processors, controllers, MCUs, microprocessors, or other electronic elements for performing the foregoing methods.

It is understood that the memories (such as the first memory 153, the second memory 163, the third memory 173, and the fourth memory 183) in the embodiments of the present invention may be volatile memories or nonvolatile memories, and may include both volatile memories and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described by embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In an exemplary embodiment, the present invention further provides a storage medium, which may be a computer readable storage medium in particular, to perform the steps of the foregoing method.

The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," etc. are used to distinguish similar objects and not necessarily to describe a particular order or sequence.

It should be noted that: the technical schemes described in the embodiments of the present invention may be arbitrarily combined without any collision.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A data transmission method, applied to a first base station, the method comprising:

transmitting the time domain and/or frequency domain resources for transmitting the first information to a second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources;

The first information is information required by the first base station to serve the cell.

2. The method according to claim 1, wherein said transmitting the time and/or frequency domain resources for transmitting the first information to the second base station comprises:

or, the time domain and/or frequency domain resources are sent to the second base station through the media access control MAC control element CE.

3. The method of claim 1, wherein the first information comprises at least one of:

synchronizing the broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

demodulation reference symbol DMRS;

uplink data;

downstream data.

4. The method according to claim 1, wherein the method further comprises:

5. A data transmission method, applied to a second base station, the method comprising:

determining other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the first base station and the first base station by utilizing the time domain and/or frequency domain resources so as to control the data transmission of the link on the other resources;

6. The method of claim 5, wherein said controlling data transmission of said link over said other resources comprises:

7. The method of claim 6, wherein the controlling the uplink scheduling of the link on the other resources comprises:

or alternatively, the process may be performed,

8. The method of claim 5, wherein when the data transmission controlling the link is performed on the other resource, the method further comprises:

determining the partial bandwidth BWP information of the link, wherein the resources corresponding to the BWP information do not contain the time domain and/or frequency domain resources;

and transmitting the BWP information to the first base station.

9. The method of claim 5, wherein said controlling data transmission of said link over said other resources comprises:

10. The method of claim 5, wherein the method further comprises:

11. A data transmission apparatus for use with a first base station, the apparatus comprising:

A transmitting unit, configured to transmit time-domain and/or frequency-domain resources for transmitting the first information to the second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources;

12. The apparatus according to claim 11, wherein the transmitting unit is specifically configured to: transmitting the time domain and/or frequency domain resources to a second base station through an X2 interface; or, transmitting the time domain and/or frequency domain resources to a second base station through high-layer signaling; or, transmitting the time domain and/or frequency domain resources to a second base station through MSG 3; or, transmitting the time domain and/or frequency domain resources to a second base station through an uplink physical layer channel; or, the time domain and/or frequency domain resources are sent to the second base station through the media access control MAC control element CE.

13. The apparatus of claim 11, wherein the apparatus further comprises:

14. A data transmission apparatus for use with a second base station, the apparatus comprising:

a control unit, configured to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between itself and the first base station by using the time domain and/or frequency domain resources, so as to control data transmission of the link on the other resources;

15. The device according to claim 14, characterized in that said control unit is specifically configured to: and controlling the uplink scheduling of the link to be performed on the other resources.

16. The apparatus of claim 14, wherein the apparatus comprises:

17. A first base station, the first base station comprising:

a first communication interface for transmitting time-domain and/or frequency-domain resources for transmitting the first information to the second base station; the first base station is a child node of the second base station; the time domain and/or frequency domain resources are used for the second base station to determine other resources except the determined time domain and/or frequency domain resources in the resources corresponding to the link between the second base station and the first base station so as to control the data transmission of the link on the other resources;

18. The first base station of claim 17, wherein the first base station further comprises:

and the first processor is used for not transmitting the first information to the terminal or not processing the uplink scheduling or downlink transmission of the second base station when determining that the second base station performs the uplink scheduling or downlink transmission of the first information on the time domain and/or frequency domain resources of the first information.

19. A second base station, the second base station comprising:

a second processor, configured to determine, using the time-domain and/or frequency-domain resources, other resources than the determined time-domain and/or frequency-domain resources among resources corresponding to a link between itself and the first base station, so as to control data transmission of the link on the other resources;

20. The second base station of claim 19, wherein the second base station,

the second processor is further configured to perform uplink scheduling or downlink transmission on a time domain and/or frequency domain resource for transmitting the first information by the first base station.

21. A storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method of any of claims 1 to 4 or performs the steps of the method of any of claims 5 to 10.