CN111491387A

CN111491387A - Data transmission method, device, related equipment and storage medium

Info

Publication number: CN111491387A
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: 2020-08-04
Anticipated expiration: 2039-01-28
Also published as: CN111491387B

Abstract

The invention discloses a data transmission method, a data transmission device, related equipment and a storage medium. The method comprises the following steps: sending 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 resource is used for the second base station to determine other resources except the determined time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control 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, a Fifth Generation mobile communication (5G) system can work on a large bandwidth of 100MHz to 400MHz, and can improve a higher system rate, which provides conditions for application of an Integrated Access and Backhaul (IAB) base station. The term "IAB base station" refers to a base station that integrates an access link and a backhaul link, where in a 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 gNB performs uplink scheduling of the backhaul link to the IAB base station, if data transmission for performing the backhaul link is scheduled on the same resource as necessary information for serving the local cell transmitted on the access link, it cannot be guaranteed that data transmission on the access link and data transmission on the backhaul link are performed at the same time.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a data transmission method, an apparatus, a related device, 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:

sending 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 resource is used for the second base station to determine other resources except the time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control data transmission of the link on the other resources.

In the foregoing solution, the first information is information required by the first base station to serve the local cell.

In the foregoing 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, the time domain and/or frequency domain resource is sent to the second base station through a high-level signaling;

or, the time domain and/or frequency domain resource is sent to the second base station through the MSG 3;

or, the time domain and/or frequency domain resource is sent to the second base station through an uplink physical layer channel;

or, the time domain and/or frequency domain resource is sent to the second base station through a Media Access Control (MAC) Control unit (CE, Control unit).

In the foregoing solution, the first information includes at least one of:

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

demodulation reference symbols (DMRS);

uplink data;

and (4) downlink 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 using the time domain and/or frequency domain resources, so as to control data transmission of the link on the other resources.

In the foregoing solution, the controlling the data transmission of the link on the other resource includes:

controlling uplink scheduling of the link on the other resources.

In the foregoing solution, the controlling uplink scheduling of the link on the other resources includes:

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

alternatively, the first and second electrodes may be,

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

In the foregoing solution, when performing data transmission for controlling the link on the other resource, the method further includes:

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

transmitting the BWP information to the first base station.

and placing data on the other resources for data transmission of the link based on the rate matching.

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

when it is determined that the second base station performs uplink scheduling or downlink transmission on the time domain and/or frequency domain resource of the first information to the first base station, the first information is not transmitted to the terminal, or the uplink scheduling or downlink transmission of the second base station is not processed.

and performing uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resource of the first base station for transmitting the first information.

An embodiment of the present invention provides a data transmission apparatus, which is applied to a first base station, and the apparatus includes:

a sending unit, configured to send a time domain and/or frequency domain resource 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 resource is used for the second base station to determine other resources except the determined time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control data transmission of the link on the other resources.

In the foregoing scheme, 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, the time domain and/or frequency domain resource is sent to the second base station through a high-level signaling; or, the time domain and/or frequency domain resource is sent to the second base station through the MSG 3; or, the time domain and/or frequency domain resource is sent to the second base station through an uplink physical layer channel; or, the time domain and/or frequency domain resource is sent to the second base station through the MAC CE.

An embodiment of the present invention provides a data transmission apparatus, which is applied to a second base station, and the apparatus includes:

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

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

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

a first transmission unit, configured to, when it is determined that a second base station performs uplink scheduling or downlink transmission on a time domain and/or frequency domain resource of first information for the first base station, not transmit the first information to a terminal, or not process the uplink scheduling or downlink transmission of the second base station.

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 resource of the first information transmitted by the first base station.

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

a first communication interface, configured to send a time domain and/or frequency domain resource for transmitting 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 resource is used for the second base station to determine other resources except the determined time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control data transmission of the link on the other resources.

An embodiment of the present invention provides a second base station, where the second base station includes:

a second communication interface, configured to acquire a time domain and/or frequency domain resource of the first information from the first base station; the first base station is a child node of the second base station;

and a second processor, configured to determine, by using the time domain and/or frequency domain resource, other resources, except the determined time domain and/or frequency domain resource, in resources corresponding to a link between the first base station and the second base station, so as to control data transmission of the link over the other resources.

and a third processor, configured to, when it is determined that the second base station performs uplink scheduling or downlink transmission on the time domain and/or frequency domain resource of the first information for the first base station, not transmit the first information to the terminal, or not process the uplink scheduling or downlink transmission of the second base station.

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

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

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 resource 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 resource is used for the second base station to determine other resources except the time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control data transmission of the link on the other resources. In this embodiment of the present invention, a first base station sends a time domain and/or frequency domain resource of first information to a second base station, so that the second base station may determine other resources except the time domain and/or frequency domain resource from resources corresponding to a link, and perform data transmission of the link on the other resources, that is, the second base station does not perform scheduling and downlink transmission of an uplink service on the time domain and/or frequency domain resource to the first base station, thereby ensuring that a resource occupied by the first base station for transmitting the first information to a terminal is different from a resource occupied by the second base station for performing data transmission of the link, and thus ensuring that data transmission on an access link and data transmission on a backhaul link are performed simultaneously.

Drawings

FIG. 1 is a diagram illustrating data backhaul in the related art;

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

FIG. 2b is a diagram illustrating a frequency division multiplexing method in the related art;

FIG. 2c is a diagram illustrating a space division multiplexing method in the related art;

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

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

fig. 5a is a diagram illustrating transmission power occupying a Single Side Band (SSB) due to space division multiplexing in the related art;

fig. 5b is a schematic diagram of necessary information for avoiding access link transmission in space division multiplexing in the related art;

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

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

FIG. 7 is a second flowchart illustrating a data transmission method according to an embodiment of the present invention;

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

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

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

FIG. 11 is a first schematic diagram illustrating a first exemplary configuration of a data transmission apparatus according to an embodiment of the present invention;

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

FIG. 13 is a third schematic structural diagram of a data transmission device according to an embodiment of the present invention;

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

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

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

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

fig. 18 is a schematic structural diagram 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 (3 GPP) introduces a self-backhauling technology, replaces the optical fiber backhauling with high-Frequency air interface transmission, and can transmit data back to a station with optical fiber transmission capability through a multi-hop link, and how to allocate resources on a Backhaul link and an Access link (accesslink) becomes an important point of discussion, wherein the resource allocation manner includes Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM, Frequency Division Multiplexing), and Space Division Multiplexing (SDM) Multiplexing manners, fig. 1 is a schematic diagram of the data backhauling in the related art, as shown in fig. 1, Access links (a L, ess L ink) are disposed between a base station and a terminal (UE), Backhaul links (B L, Backhaul link L is disposed between the base station and the terminal (UE), and fig. 2 is a schematic diagram of the related art, and fig. 2 is a schematic diagram of the Access link Multiplexing in the related art.

Fig. 3 is a schematic diagram of space division multiplexing of the Access link and the backhaul link in the related art, and as shown in fig. 3, the Access link (a L, Access L ink) is disposed between the IAB base station and the UE, and the backhaul link is disposed between the gNB base station and the IAB base station, and the multiplexing of the Access link and the backhaul link is set to space division multiplexing, so that when the IAB base station returns data to the gNB or transmits data to the UE, data transmission on the backhaul link and the Access link can be performed simultaneously.

Fig. 4 is a diagram illustrating data transmission over 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 and the UE2 served by the IAB-1 base station can work normally, the IAB-1 base station needs to send the SSB, the Minimum System Information (RMSI), the Channel State Information Reference Signal (CSI-RS), and other necessary Information to the IAB-2 base station and the UE2, and also needs to reserve some resource locations for the IAB-2 base station and the UE 2. Because the gNB cannot synchronize with the IAB-2 base station and cannot read the broadcast information of the IAB-1, the gNB does not know the time-frequency resources occupied by information such as SSB, RMSI and CSI-RS transmitted by the IAB-1 base station. When the time-frequency resources occupied by information such as SSB, RMSI, CSI-RS transmitted on the access link are the same as the time-domain resources occupied by data transmission performed by the backhaul link, the multiplexing mode of the access link and the backhaul link may be set to space division multiplexing, as shown in fig. 5a, however, the space division multiplexing mode may occupy the power for transmitting information such as SSB, thereby reducing the transmission power of information such as SSB, which may cause problems of shrinkage of the coverage area of the base station and fluctuation of the measurement reference power. Obviously, the gNB is not able to perform uplink scheduling and data transmission of the backhaul link to the IAB-1 base station in any resource location, and the gNB needs to avoid necessary information such as SSB, RMSI, CSI-RS transmitted on the access link when performing uplink scheduling and data transmission of the backhaul link, as shown in fig. 5 b.

In the above-described manner, when the gNB base station performs uplink scheduling of the backhaul link to the IAB base station, if data transmission for performing the backhaul link is scheduled on the same resource as the necessary information for serving the local cell transmitted on the access link, it cannot be guaranteed that data transmission on the access link and 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 resource is used for the second base station to determine other resources except the time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control data transmission of the backhaul link on the other resources.

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

step 601: and sending 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 local cell transmitted on the access link. The time-Frequency resources may be represented by frames, subframes, time slots, Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the Frequency-domain resources may be represented by subcarriers occupied in the Frequency domain.

Prior to step 601, the first base station may also determine time and/or frequency domain resources on which to transmit the first information.

Here, the first base station is a child node of the second base station; the time domain and/or frequency domain resource is used for the second base station to determine other resources except the determined time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control 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 a 5G system, the second base station may be a gNB.

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

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

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

and (4) downlink data.

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

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

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

In practical applications, since two base stations in a communication network may be connected to each other through an X2 interface and data and signaling may be transmitted between the two base stations through an X2 interface, a time domain and/or frequency domain resource may be sent to the second base station through an X2 interface between the first base station and the second base station, so that the second base station may determine the other resource.

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

In practical application, in a mobile communication system, a high layer signaling may be transmitted between the first base station and the second base station, where the high layer signaling may be signaling transmitted between a child node and a highest layer protocol body of a node in an upper stage. In this way, the first base station may carry the determined time domain and/or frequency domain Resource in a higher layer signaling, such as a Radio Resource Control (RRC) connection reconfiguration message, and send the information to the second base station, so that the second base station may determine the other Resource.

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

In practical applications, 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 for the second base station to determine the other resources.

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

In practical application, under the operation mode of the control center, the resource configuration of the first information may be performed on the first base station, such as the IAB base station, through the control center, such as the gNB or the donor or a Central Unit (CU), so that the time domain and/or frequency domain resources for transmitting the first information by the first base station may be sent to the second base station, such as the IAB base station, through the control center, such as the gNB or the donor or the CU.

Based on this, in an embodiment, the sending the determined time domain and/or frequency domain resource to the second base station includes: and sending 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 resource to the second base station through a channel of a physical layer.

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

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

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

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

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

Here, after the first base station sends the time domain and/or frequency domain resource to the second base station, the second base station may determine other resources except the time domain and/or frequency domain resource in the resource 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, and as shown in fig. 6a, block 1 may represent a resource block occupied by the time domain and/or frequency domain resource, and block 2 may represent a resource corresponding to a link between the second base station and the first base station. And the second base station does not perform uplink scheduling on the time domain and/or frequency domain resource corresponding to the second base station block 1.

With the technical solution of the embodiment of the present invention, after the first base station sends the determined time domain and/or frequency domain resource to the second base station, the first base station may determine that the second base station does not perform uplink service scheduling and downlink transmission on the time domain and/or frequency domain resource, in other words, the first base station does not expect that the second base station performs uplink service scheduling and downlink transmission on the time domain and/or frequency domain resource. After receiving the time domain and/or frequency domain resources sent by the first base station, the second base station determines other resources except the time domain and/or frequency domain resources from the resources corresponding to the link, and performs data transmission of the link on the other resources, so as to ensure 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, thereby avoiding the conflict between the resources occupied by the first information and the resources occupied by performing uplink scheduling of the link, and thus, the data transmission on the access link and the data transmission on the backhaul link can be performed simultaneously.

Correspondingly, an embodiment of the present invention further provides a data transmission method, which is applied to a second base station, and as shown in fig. 7, the method includes:

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

The time-frequency resources may be represented by frames, subframes, slots, and OFDM symbols, and the frequency-domain resources may be represented by subcarriers occupied in the frequency domain.

Here, the first base station and the second base station may be a common 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 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, uplink physical layer channel, MAC CE, and so on.

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 using the time domain and/or frequency domain resources, so as to control 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 resource may refer to the second base station performing uplink scheduling of the backhaul link on the other resource with respect to the first base station, or may refer to the second base station transmitting data to the first base station on the other resource.

In practical application, if a time domain and/or frequency domain resource occupied by first information transmitted on an access link is different from a resource occupied by uplink scheduling or data transmission on a backhaul link, when the access link and the backhaul link are multiplexed, the first base station may not only perform uplink scheduling or downlink transmission on the backhaul link, but also transmit the first information to a terminal.

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

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

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 uplink scheduling of the backhaul link on a frequency domain resource of the other resource.

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

In practice, when applied to 5G, the concept of BWP is introduced in a 5G system, i.e. the second base station can configure the first base station to operate only on a part of the bandwidth, e.g. 20 MHz. By configuring BWP on other resources except for the time domain and/or frequency domain resources, the second base station can perform uplink scheduling and downlink transmission on the resource corresponding to the BWP to the first base station, which not only does not occupy the time domain and/or frequency domain resources for transmitting the first information, but also saves the power consumption of the first base station.

Based on this, in an embodiment, when performing data transmission on the other resource to control the backhaul link, the method further includes: determining BWP information of the link, where resources corresponding to the BWP information do not include the time domain and/or frequency domain resources; transmitting the BWP information to the first base station.

Here, the second base station sends the BWP information to the first base station, and the first base station is not scheduled uplink and transmitted downlink by the second base station on the time domain and/or frequency domain resources.

In practical application, when the second base station sends data to the first base station, the data to be transmitted may be placed on the other resources other than the time domain and/or frequency domain resources instead of the time domain and/or frequency domain resources based on rate matching, so that the second base station does 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 resource includes: and placing data on the other resources for data transmission of the link based on the rate matching.

By adopting the technical scheme of the embodiment of the invention, the second base station receives the time domain and/or frequency domain resource of the first information sent by the first base station, thus, the second base station can determine other resources except time domain and/or frequency domain resources from the resources corresponding to the link, performing data transmission of the link on the other resources, that is, the second base station does not perform scheduling and downlink transmission of uplink traffic to 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 transmitting the data of the link, thereby avoiding the conflict between the resource occupied by the first information and the resource occupied by the uplink scheduling of the link, in this way, data transmission on the access link can be guaranteed to be simultaneous with data transmission on the backhaul link.

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 local cell transmitted on the access link.

A synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

demodulating a reference symbol DMRS;

uplink data;

and (4) downlink data.

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

Step 802: and the first base station sends 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 resource is used for the second base station to determine other resources except the determined time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control 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 common base station or an IAB base station. In a 5G system, the second base station may be a gNB.

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

Step 803: and the second base station acquires the 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 using the time domain and/or frequency domain resources, so as to control the data transmission of the link on the other resources.

Here, controlling the data transmission of the link on the other resource specifically includes the following three cases:

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

In a second case, the second base station may determine BWP information of the link, where a resource corresponding to the BWP information does not include the time-domain and/or frequency-domain resource; transmitting the BWP information to the first base station. In this way, the second base station may perform uplink scheduling and downlink transmission on the resource corresponding to the BWP for the first base station, which may not only occupy the time domain and/or frequency domain resource for transmitting the first information, but also 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 on the other resources other than the time domain and/or frequency domain resources instead of the time domain and/or frequency domain resources based on rate matching, so that the second base station does not perform uplink scheduling on the time domain and/or frequency domain resources for the first base station.

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

In the data transmission method provided in the embodiment of the present invention, the first base station sends the time domain and/or frequency domain resource of the first information to the second base station, so that the second base station may not perform data transmission of the link to the first base station on the time domain and/or frequency domain resource, thereby ensuring that a resource occupied by the first base station for transmitting the first information to the terminal is different from a resource occupied by the second base station for performing data transmission of the link, and thus ensuring that data transmission on an access link and data transmission on a backhaul link are performed simultaneously.

Ideally, 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 to the first base station, 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 time domain and/or frequency domain resources of the first information to the first base station, based on which, the embodiment of the present invention provides a data transmission method, as shown in fig. 9, which is applied to the first base station, the method 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 serving the local cell transmitted on the access link between the first base station and the terminal may include a plurality of information, the first information may be information necessary for the first base station to serve the local cell.

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

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

and (4) downlink data.

In practical 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 resources used for uplink transmission. After receiving the scheduling information, the first base station judges whether the resource used for uplink transmission is the same as the time domain and/or frequency domain resource of the first information; and when the first information and the second information are 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.

Similarly, when the second base station performs downlink transmission to 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 receiving the downlink transmission information, the first base station judges whether the resources used for downlink transmission are the same as the time domain and/or frequency domain resources of the first information; and when the first information and the second information are the same, determining that the second base station carries out downlink transmission on the first base station on the time domain and/or frequency domain resources of the first information.

Step 902: when it is determined that the second base station performs uplink scheduling or downlink transmission on the time domain and/or frequency domain resource of the first information to the first base station, the first information is not transmitted to the terminal, or the uplink scheduling or downlink transmission of the second base station is not processed.

By adopting the technical scheme of the embodiment of the invention, the second base station may perform uplink scheduling or downlink transmission on the time domain and/or frequency domain resources under the condition that the other resources cannot be used, and in order to avoid the conflict 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 performed 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, which is applied to a second base station, and 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 comprise at least one of:

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

and (4) downlink data.

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

Step 1002: and performing uplink scheduling or downlink transmission on the first base station on the time domain and/or frequency domain resource of the first base station for transmitting the first information.

In practical applications, the second base station may perform uplink scheduling or downlink transmission on the time domain and/or frequency domain resources if 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 resources used for uplink transmission. 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 a downlink control instruction and data, and the downlink transmission information may further include resources used by the second base station for downlink transmission.

The following describes embodiments of the present invention in further detail with reference to the application examples.

Application embodiment 1

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

In this embodiment of the application, the determined first information is Global Synchronization Channel Number (GSCN) 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 the upper-level IAB base station or the gNB receives the GSCN frequency domain resources and the RMSI frequency domain resources reported by the sub-IAB base station, other resources except the SSB and the RMSI occupied frequency domain resources are determined from the resources corresponding to the backhaul link, uplink scheduling of the backhaul link is not performed on the SSB and the RMSI occupied frequency domain resources, and uplink scheduling of the backhaul link is performed on the other resources. Therefore, the resource occupied by the first base station for transmitting the first information to the terminal and the resource occupied by the second base station for performing uplink scheduling do not conflict, and therefore data transmission on the access link and data transmission on the return link are ensured to be performed simultaneously.

Application example two

In this 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 upper-level IAB base station operate at the same frequency point, and the synchronization symbols of the two base stations, such as SSBs, operate at the same time-frequency resource. The sub-IAB base station only needs to report the frequency domain resource of the RMSI to the previous base station. The upper-level IAB base station determines other resources except the time-frequency resource occupied by the self SSB and the frequency-domain resource occupied by the RMSI from the resources corresponding to the backhaul link, does not perform uplink scheduling of the backhaul link on the time-frequency resource occupied by the self SSB and the frequency-domain resource occupied by the RMSI, and performs uplink scheduling of the backhaul link on the other resources, so that the resource occupied by the first base station for transmitting the first information to the terminal does not conflict with the resource occupied by the second base station for performing uplink scheduling, thereby ensuring that data transmission on the access link and data transmission on the backhaul link are performed simultaneously.

Application example three

In this application embodiment, the sub-IAB base station sends the time domain resource and the frequency domain resource of the downlink CSI-RS, which are required for the service of the cell, to the upper-level IAB base station through the high-level information or the X2 interface. Under the condition that the upper-level IAB base station cannot use other resources, uplink scheduling may be performed on the sub-IAB base station on the time domain resource of the CSI-RS, the sub-IAB base station may ignore the uplink scheduling of the second base station, and specifically, returned data may not be placed on the time domain resource for transmitting necessary information such as the CSI-RS, the SSB, the RMSI, and the like through rate matching. Therefore, the resource occupied by the first base station for transmitting the first information to the terminal and the resource occupied by the second base station for performing uplink scheduling do not conflict, and therefore data transmission on the access link and data transmission on the return link are ensured to be performed simultaneously.

Application example four

In this application embodiment, the sub-IAB base station sends the time domain resource, such as the timeslot or symbol, of the uplink random access opportunity (RACHoccasion) required for the service of the cell to the upper-level IAB base station. The superior IAB base station does not perform uplink scheduling on the sub IAB base station on the time slot or symbol corresponding to RACHoccasion, so that the sub IAB base station only receives uplink random access information transmitted on the access link on the time slot or symbol corresponding to RACHoccasion, thereby ensuring that data transmission on the access link and data transmission on the return link are performed simultaneously.

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

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

In one embodiment, the apparatus comprises:

a first determining unit 112, configured to determine time domain and/or frequency domain resources 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 resource is used for the second base station to determine other resources except the determined time domain and/or frequency domain resource in the resources corresponding to the link between the second base station and the first base station, so as to control 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 comprise at least one of:

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

and (4) downlink data.

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

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 an X2 interface; or, the determined time domain and/or frequency domain resource is sent to the second base station through a high-level signaling; or, the determined time domain and/or frequency domain resource is sent to the second base station through the MSG 3; or, the determined time domain and/or frequency domain resource is sent to the second base station through the uplink physical layer channel; or, the determined time domain and/or frequency domain resource is sent to the second base station through the MAC CE.

Here, in an operation mode of the control center, the resource configuration of the first information may be performed on the first base station, for example, the IAB base station, through the control center, for example, the gNB, the donor, or the CU, so that the time domain and/or frequency domain resource for the first base station to transmit the first information may be sent to the second base station, for example, the IAB base station, through the control center, for example, the gNB, the donor, or the CU.

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 the program modules is exemplified when data transmission is performed, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the data transmission apparatus provided in the above embodiment and the data transmission method embodiment at the first base station side belong to the same concept, and the specific implementation process thereof is described in detail in the method embodiment and is not described herein again.

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

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

A control unit 122, configured to determine, by using the time domain and/or frequency domain resource, other resources except the determined time domain and/or frequency domain resource in the resource 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 common 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: controlling uplink scheduling of the backhaul link on the other resources.

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

Here, the second base station sends BWP information that does not include the time domain and/or frequency domain resources to the first base station, and the first base station is not scheduled uplink and transmitted downlink by the second base station on the time domain and/or frequency domain resources.

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

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

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 the program modules is exemplified when data transmission is performed, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the data transmission apparatus provided in the above embodiment and the data transmission method embodiment at the second base station side belong to the same concept, and the specific implementation process thereof is described in detail in the method embodiment and is not described herein again.

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

a first transmitting unit 131, configured to, when it is determined that the second base station performs uplink scheduling or downlink transmission on the time domain and/or frequency domain resource of the first information for the first base station, not transmit the first information to the terminal, or not process the 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 determining unit 132, configured to determine whether the second base station performs uplink scheduling or downlink transmission on the time domain and/or frequency domain resource of the first information for the first base station.

Specifically, when the second base station performs uplink scheduling or downlink transmission on the first base station, the second base station may send the used resource 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 time domain and/or frequency domain resource of the first information on the first base station.

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

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

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

and (4) downlink data.

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

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

a second transmission unit 141, configured to perform uplink scheduling or downlink transmission on the time domain and/or frequency domain resource where the first base station transmits the first information.

In one embodiment, the apparatus 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 comprise at least one of:

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

DMRS；

uplink data;

and (4) downlink data.

Based on the hardware implementation of the above program modules, to implement the method according to the embodiment of the present invention, an 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 to implement information interaction with the second base station, and is configured to execute the method 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 exchanging information with the second base station.

In practice, the various components of the first base station 150 are coupled together by a bus system 154. It will be appreciated that the bus system 154 is used to enable communications among the components. The bus system 154 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, 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 embodiments 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 capability. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the first processor 151. The first processor 151 may be a general purpose processor, a Digital Signal Processor (DSP), 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. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware 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 first memory 153, and the first processor 151 reads information in the first memory 153 to complete the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the first base station 150 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable logic devices (P L D, Programmable L) Complex Programmable logic devices (CP L D, Complex Programmable L) devices, Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

To implement the method according to 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, which is capable of performing information interaction with the first base station;

and a second processor 162 connected to the second communication interface 161 to implement information interaction with the first base station, and configured to execute the method provided by one or more of the above technical solutions when running a computer program. And the computer program is stored on the second memory 163.

In practice, as shown in fig. 16, the various components of the second base station 160 are coupled together by a bus system 164. It will be appreciated that the bus system 164 is used to enable communications among the components. The bus system 164 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 164 in fig. 16.

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

The method disclosed in the above embodiments 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 circuits of hardware or instructions in the form of software in the second processor 162. The second processor 162 described above may be a general purpose processor, a 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. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware 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 second memory 163, and second processor 162 reads the information in second memory 163 and, in conjunction with its hardware, performs the steps of the foregoing method.

In an exemplary embodiment, the second base station 160 may be implemented by one or more ASICs, DSPs, P L D, CP L D, FPGA, general processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the above program modules, to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a first base station, and as shown in fig. 17, the first base station 170 includes:

the third processor 171 is connected to the third communication interface 172 to implement information interaction with the second base station, and is configured to execute the method 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;

and a third communication interface 172 capable of exchanging information with the second base station.

In practice, the various components of the first base station 170 are coupled together by a bus system 174. It is understood that the bus system 174 is used to enable communications among the components. The bus system 174 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, 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 embodiments 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 capability. In implementation, the steps of the method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the third processor 171. The third processor 171 described above may be a general purpose processor, a 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. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware 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 third memory 173, and the third processor 171 reads the information in the third memory 173 and performs the steps of the aforementioned method in conjunction with its hardware.

To implement the method according to 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:

the fourth communication interface 181 is capable of performing 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 when running a computer program, the fourth processor 182 is configured to execute the method provided in one or more of the above technical solutions. And the computer program is stored on the fourth memory 183.

In practice, as shown in fig. 18, the various components of the second base station 180 are coupled together by a bus system 184. It will be appreciated that the bus system 184 is used to enable communications among the components. The bus system 184 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, 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 embodiments 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 circuits of hardware or instructions in the form of software in the fourth processor 182. The fourth processor 182 described above may be a general purpose processor, a 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. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located on a storage medium located in the fourth memory 183 and the fourth processor 182 reads the information from the fourth memory 183 and performs the steps of the method described above in conjunction with its hardware.

In an exemplary embodiment, the second base station 180 may be implemented by one or more ASICs, DSPs, P L D, CP L D, FPGA, general processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

It is understood that the memories in the embodiments of the present invention (such as the first Memory 153, the second Memory 163, the third Memory 173, and the fourth Memory 183) may be volatile memories or nonvolatile memories, and may also include both volatile and nonvolatile memories, wherein the nonvolatile memories may be Read Only Memories (ROMs), Programmable Read Only Memories (PROMs), Erasable Programmable Read Only Memories (EPROMs), Electrically Erasable Programmable Read Only Memories (EEPROMs), magnetic Random Access memories (FRAMs), magnetic Random Access memories (Flash memories), magnetic surface memories, optical disks, or Compact disk Read Only memories (CD-ROMs), magnetic Random Access memories (FRAMs), Random Access memories (Flash memories), Dynamic Random Access memories (SDRAM), Random Access memories (SDRAM, or SDRAM), and Random Access memories (SDRAM, Random Access memories) may be used as a Dynamic Random Access Memory, or Random Access memories (SDRAM), and Random Access memories (SDRAM, and Random Access memories may be of a type, but are not limited by any other examples, such as Dynamic Access memories (SDRAM, Random Access memories (SDRAM, Random Access memories) and Random Access memories (SDRAM, Random Access memories are suitable for example, and Random Access memories suitable for Direct Access memories, Random Access memories (SDRAM, Random Access memories) and Random Access memories, Random Access memories (SDRAM, Random Access memories) are used as Dynamic Access memories, and are not limited by a Synchronous Access memories, but are available as Dynamic Access memories, or Dynamic Access memories (SDRAM, Random Access memories, and Random Access memories, or Dynamic Access memories, Random Access memories (SDRAM, Random Access memories (SDRAM, Dynamic Access memories) examples.

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

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

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

It should be noted that: the technical schemes described in the embodiments of the present invention can be combined arbitrarily without conflict.

The above description is only a preferred embodiment 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:

2. The method of claim 1, wherein the first information is information required by the first base station to serve the cell.

3. The method of claim 1, wherein sending 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 resource is sent to the second base station through a media access control MAC control element CE.

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

a synchronous broadcast channel;

synchronizing broadcast information;

system information;

a downlink reference signal;

an uplink random access channel;

demodulating a reference symbol DMRS;

uplink data;

and (4) downlink data.

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

6. The method of claim 5, wherein the first information is information required by the first base station to serve the cell.

7. The method of claim 5, wherein the controlling the data transmission of the link on the other resource comprises:

controlling uplink scheduling of the link on the other resources.

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

alternatively, the first and second electrodes may be,

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

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

transmitting the BWP information to the first base station.

10. The method of claim 5, wherein the controlling the data transmission of the link on the other resource comprises:

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

12. The method of claim 11, wherein the first information is information required by the first base station to serve the cell.

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

14. The method of claim 13, wherein the first information is information required by the first base station to serve the cell.

15. A data transmission apparatus, applied to a first base station, the apparatus comprising:

16. The apparatus according to claim 15, wherein 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, the time domain and/or frequency domain resource is sent to the second base station through a high-level signaling; or, the time domain and/or frequency domain resource is sent to the second base station through the MSG 3; or, the time domain and/or frequency domain resource is sent to the second base station through an uplink physical layer channel; or, the time domain and/or frequency domain resource is sent to the second base station through a media access control MAC control element CE.

17. A data transmission apparatus, for use in a second base station, the apparatus comprising:

18. The apparatus according to claim 17, wherein the control unit is specifically configured to: controlling uplink scheduling of the link on the other resources.

19. A data transmission apparatus, applied to a first base station, the apparatus comprising:

20. A data transmission apparatus, for use in a second base station, the apparatus comprising:

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

22. A second base station, comprising:

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

24. A second base station, comprising:

25. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 4, or for performing the steps of the method of any one of claims 5 to 10, or for performing the steps of the method of claim 11 or 12, or for performing the steps of the method of any one of claims 6 to 11, when executed by a processor.