CN114286434A

CN114286434A - Full-duplex IAB uplink transmission method and equipment

Info

Publication number: CN114286434A
Application number: CN202111544307.4A
Authority: CN
Inventors: 王志勤; 沈霞; 杜滢; 闫志宇; 焦慧颖; 刘晓峰; 魏贵明; 徐菲
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-04-05

Abstract

The application discloses a full-duplex IAB uplink transmission method, which is used in a wireless communication system, wherein the wireless communication system comprises network equipment, relay equipment and terminal equipment; the relay equipment comprises six modes of IAB-MT-TX, IAB-MT-RX1, IAB-MT-RX2, IAB-DU-TX, IAB-DU-RX1 and IAB-DU-RX2, first information is used for directly or indirectly indicating timing advance information required by uplink transmission of terminal equipment and comprises a first timing difference and/or a second timing difference, the first timing difference is the timing difference between the IAB-MT-RX2 mode and the IAB-DU-RX1 mode, and the second timing difference is the timing difference between the IAB-MT-RX1 mode and the IAB-DU-RX1 mode. The application also includes devices and systems implementing the method. The method and the device solve the problem that the full-duplex IAB node schedules and receives the data sent by the terminal side in an IAB-MT receiving mode.

Description

Full-duplex IAB uplink transmission method and equipment

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a full-duplex IAB uplink transmission method and device.

Background

In the 5G system, an access backhaul integration design is introduced, a node supporting backhaul is called an IAB (integrated access and broadband, wireless repeater) node, which is also a relay node, and the IAB node may support a transmission function of a base station data plane and may also support a part of functions of a terminal. In the prior art, an IAB node cannot receive and transmit data simultaneously, so that the IAB node will include four operating modes, i.e., IAB-MT-TX, IAB-MT-RX, IAB-DU-TX, and IAB-DU-RX, because different modes correspond to different transmit and receive links, each mode has an independent timing mechanism, and symbols in different modes are not aligned and overlap, so that a guard interval is required for switching between the modes, and transmission failure caused by transmission resources occupying conflicting symbols is avoided. When an IAB node operates in full duplex mode, data can be received and transmitted simultaneously. The uplink transmission of the traditional UE is based on the timing of IAB-DU-RX1 for data transmission, and the uplink transmission requirements of the full-duplex IAB node based on the timing of IAB-MT-RX1 and IAB-MT-RX2 cannot be met.

Disclosure of Invention

The application provides a full-duplex IAB uplink transmission method and equipment, which solve the problem that a full-duplex IAB node schedules and receives data sent by a terminal side in an IAB-MT receiving mode.

In a first aspect, an embodiment of the present application provides a full-duplex IAB uplink transmission method, which is used in a wireless communication system, where the wireless communication system includes a network device, a relay device, and a terminal device; the relay equipment comprises six modes of IAB-MT-TX, IAB-MT-RX1, IAB-MT-RX2, IAB-DU-TX, IAB-DU-RX1 and IAB-DU-RX2, first information is used for directly or indirectly indicating timing advance information required by uplink transmission of terminal equipment and comprises a first timing difference and/or a second timing difference, the first timing difference is the timing difference between the IAB-MT-RX2 mode and the IAB-DU-RX1 mode, and the second timing difference is the timing difference between the IAB-MT-RX1 mode and the IAB-DU-RX1 mode.

Preferably, the first information indicates a first timing advance and a third timing difference, and is used to calculate the first timing difference and/or the second timing difference; the first timing advance is the timing advance of the IAB-MT-TX mode compared with the IAB-MT-RX1 mode, and the third timing difference is the timing difference required by the network equipment for switching between data transmission and data reception.

Preferably, if the IAB-DU-RX1 and the IAB-DU-TX mode use the same reference timing, and the IAB-MT-RX2 and the IAB-MT-TX mode use the same reference timing, the first timing difference is TA _ IAB/2-Tdelta, and the second timing difference is TA _ IAB/2+ Tdelta; and TA _ IAB is the first timing advance, and Tdelta is the third timing difference.

Preferably, if the IAB-MT-RX2 and the IAB-MT-TX mode use the same reference timing, the first timing difference is TA _ IAB/2-Tdelta 2, and the second timing difference is TA _ IAB/2+ Tdelta 2; and TA _ IAB is the first timing advance, Tdelta is the third timing difference, and Tdelta2 is the fourth timing difference.

Preferably, the first information further indicates a fourth timing difference, and the first timing difference and/or the second timing difference are calculated according to the first timing advance, the third timing difference and the fourth timing difference; the fourth timing difference is a timing difference of the IAB-DU-RX1 mode compared to the IAB-DU-TX mode.

Further, the second information is used to instruct the terminal device to send the transmission resource of the uplink data.

Further, the second information is DCI or RRC signaling, and includes a field indicating time and frequency domain transmission resources of uplink data, and a field indicating whether the timing is based on the IAB-MT-RX2 mode timing or the IAB-MT-RX1 mode timing.

Further, if the second information is used to instruct the terminal device to send the transmission resource of the uplink data at the timing based on the IAB-MT-RX2 mode, the terminal device sends the uplink data to the relay device in advance of the receiving timing of the terminal by the sum of the first timing difference and the second timing advance; and the second timing advance is the timing advance required by the terminal equipment to send uplink data based on the IAB-DU-RX1 mode timing.

Further, if the second information is used to instruct the terminal device to send the transmission resource of the uplink data at the timing based on the IAB-MT-RX1 mode, the terminal device sends the uplink data to the relay device at a second timing advance less than the second timing difference before the terminal receiving timing; and the second timing advance is the timing advance required by the terminal equipment to send uplink data based on the IAB-DU-RX1 mode timing.

Further, the method of the first aspect of the present application is applied to a relay device, and includes the following steps: and sending the first information to the terminal equipment.

Preferably, the method further comprises: and sending second information to the terminal equipment, and receiving uplink sending data of the terminal equipment according to the transmission resource of the uplink data sent by the terminal equipment indicated by the second information.

Further, the method of the first aspect of the present application is applied to a relay device, and is applied to a terminal device, and includes the following steps: and receiving first information sent by the relay equipment.

Preferably, the method further comprises: and receiving second information sent by the relay equipment, and sending uplink data to the relay equipment according to the transmission resource of the uplink data sent by the terminal equipment indicated by the second information.

Further, the method of the first aspect of the present application is applied to a network device, and includes the following steps: IAB-MT-RX2 mode and IAB-MT-RX1 mode timing are indicated to the relay.

In a second aspect, an embodiment of the present application further provides a communication device (i.e., a relay device) configured to implement the method in any one of the embodiments of the first aspect of the present application. At least one module in the communication device for at least one of the following functions: sending first information used for indicating timing advance information required by uplink transmission of terminal equipment; receiving uplink data sent by the terminal equipment according to the timing advance information; the timing of IAB-MT-RX2 mode and IAB-MT-RX1 mode is determined.

In a third aspect, an embodiment of the present application further provides a communication device (terminal device), configured to implement the method in any one of the embodiments of the first aspect of the present application. At least one module in the communication device for at least one of the following functions: receiving first information used for indicating timing advance information required by uplink transmission of terminal equipment; and sending data to the relay equipment in an uplink mode according to the timing advance information.

In a fourth aspect, an embodiment of the present application further provides a communication device (network device) configured to implement the method in any one of the embodiments of the first aspect of the present application. At least one module in the communication device for at least one of the following functions: and transmitting corresponding data to the relay equipment according to the IAB-MT-RX1 mode timing and the IAB-MT-RX2 mode timing.

In a fifth aspect, the present application further provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of the embodiments of the present application.

In a sixth aspect, the present application also proposes a computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application.

In a seventh aspect, the present application further provides a mobile communication system, which includes at least 1 network device according to any embodiment of the present application, and at least 1 intermediate device according to any embodiment of the present application. Further, the terminal device further comprises at least 1 terminal device according to any one of the embodiments of the present application.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: the invention provides a full-duplex IAB uplink transmission method, which solves the problem of indefinite timing of a full-duplex IAB wireless communication system, supports the dispatching of sending data of a receiving terminal side by a full-duplex IAB node in an IAB-MT receiving mode, can reduce switching among modes and effectively improves the resource utilization rate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1(a) is a schematic diagram of a half-duplex IAB node of an embodiment of an IAB operation mode;

FIG. 1(b) is a schematic diagram of a full-duplex IAB node according to an embodiment of an IAB operation mode;

FIG. 1(c) is a schematic diagram of a guard interval of an embodiment of an IAB operation mode;

FIG. 1(d) is another schematic diagram of the guard interval of an embodiment of the IAB operation mode;

FIG. 2(a) is a flow chart of an embodiment of the method of the present application;

FIG. 2(b) is a schematic diagram of a first timing difference of an embodiment of the method of the present application;

FIG. 2(c) is a second timing differential diagram of an embodiment of the method of the present application;

FIG. 2(d) is a first and second timing differential schematic diagram of an embodiment of the method of the present application;

FIG. 2(e) is another first and second timing differential schematic diagram of an embodiment of the method of the present application;

fig. 2(f) is a schematic diagram of uplink transmission of a terminal according to an embodiment of the present invention;

fig. 2(g) is a schematic diagram of uplink transmission of another terminal according to an embodiment of the present invention;

FIG. 3 is a flow chart of an embodiment of the method of the present application for use in an intermediary device;

FIG. 4 is a flowchart of an embodiment of the method of the present application for a terminal device;

FIG. 5 is a schematic diagram of an embodiment of a network device;

fig. 6 is a schematic diagram of an embodiment of a relay device;

FIG. 7 is a schematic diagram of an embodiment of a terminal device;

FIG. 8 is a schematic diagram of a network device according to the present invention;

fig. 9 is a block diagram of a relay device of the present invention;

fig. 10 is a block diagram of a terminal device of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

FIG. 1(a) is a schematic diagram of a half-duplex IAB node of an embodiment of an IAB operation mode; FIG. 1(b) is a schematic diagram of a full-duplex IAB node according to an embodiment of an IAB operation mode; FIG. 1(c) is a schematic diagram of a guard interval of an embodiment of an IAB operation mode; fig. 1(d) is another schematic diagram of the guard interval of the embodiment of the IAB operation mode.

Fig. 1(a) illustrates a conventional half-duplex IAB node operation mode, and in fig. 1(a), a wireless communication system includes a terminal device, a relay device, and a network device. The node supporting backhaul is called an IAB child node, and is also a relay node, that is, a relay device in the wireless communication system, the relay device point may support a transmission function of a base station data plane, and the working mode is called an IAB-DU mode, and may serve a common terminal and the IAB child node. The IAB node may also support part of the functions of the terminal device, and the working mode is referred to AS an IAB-MT mode, and may include functions of a terminal physical layer, an RRC (radio resource management) layer, an AS (access) layer, and an NAS (non-access) layer, and is connected to an IAB parent node.

In the prior art, one IAB node cannot receive and transmit data at the same time. Therefore, the IAB node comprises four working modes of IAB-MT-TX, IAB-MT-RX, IAB-DU-TX and IAB-DU-RX, because different modes correspond to different sending and receiving links, each mode has an independent timing mechanism, symbols in different modes are not aligned and overlap, and therefore a guard interval is needed for switching between the modes, and transmission failure caused by transmission resources occupying collision symbols is avoided.

Fig. 1(b) illustrates an operation mode of a full-duplex IAB node, and in fig. 1(b), the wireless communication system includes a terminal device, a relay device, and a network device, where the relay device is an IAB child node in fig. 1(b), the network device is an IAB parent node in fig. 1(b), and the relay device is a full-duplex device.

When an IAB node works in full duplex mode, it can receive and transmit data simultaneously, and also includes two modes of IAB-MT and IAB-DU. Compared with the half-duplex IAB node which only receives the transmission data of the father node or the UE, the full-duplex IAB node receives the transmission data of the father node or the UE and also can receive the echo data of the transmission data of the IAB node in the MT mode or the DU mode, and the echo data are used for perception detection in the corresponding transmission environment. Thus, the IAB child node comprises six working modes, namely an IAB-MT-TX mode, an IAB-MT-RX1 mode, an IAB-MT-RX2 mode, an IAB-DU-TX mode, an IAB-DU-RX1 mode and an IAB-DU-RX2 mode, as shown in FIG. 1(b), wherein the IAB-MT-TX mode represents the transmission of uplink data to the IAB parent node; the IAB-MT-RX1 mode indicates that the receiving IAB parent node transmits downlink data; the IAB-MT-RX2 mode represents that echo data of uplink data sent to an IAB parent node is received; the IAB-DU-TX mode indicates that downlink data is transmitted to the connected UE; the IAB-DU-RX1 mode indicates that the UE receiving the connection sends uplink data; the IAB-DU-RX2 mode indicates reception of echo data for downlink data transmission to a connected UE.

The working state of the full-duplex IAB node is similar to that of the half-duplex IAB node, an independent timing mechanism is provided, corresponding same time slots cannot be completely aligned, and when switching occurs between the working states, a certain guard interval may be needed to avoid transmission collision caused by timing misalignment between the working states.

As shown in fig. 1(c), for example, when the IAB-MT-RX2 mode is switched to the IAB-DU-RX1 mode, the IAB-DU scheduling needs to avoid the guard interval, if the symbols 0 to 3 and 7 to 10 of the time slot n are used for the IAB-MT-TX mode uplink transmission, and when the perceptual measurement of the echo is simultaneously needed for the uplink transmission, the corresponding IAB-DU-RX1 mode reserves the guard symbol to ensure that the echo receives the IAB-MT-RX2 mode, and if the uplink reception on the IAB-DU-RX1 mode is scheduled at the time slot n, the timing switching between the IAB-MT-RX2 mode and the IAB-DU-RX2 mode needs to be performed.

However, in practice, after the full-duplex IAB node receives the echo signal of the signal transmitted to the IAB parent node in the IAB-MT-RX2 mode, if the echo reception in the IAB-MT-RX2 mode and the uplink reception in the IAB-DU-RX2 mode use the same carrier and subcarrier spacing, no timing switch is actually required, and the uplink transmission data of the connected UE is received in this state. For example, symbols 4-5 and 11-14 in the time slot n at the timing of IAB-MT-RX2 mode are directly scheduled for uplink transmission of the connected UE, so that the use of guard symbol resources introduced by timing switching can be reduced.

Similarly, as shown in fig. 1(d), if the IAB-MT-RX1 mode and the IAB-DU-RX1 mode use the same carrier and subcarrier spacing, uplink transmission data of the connected UE may also be received in the IAB-MT-RX1 mode.

Since the IAB-MT-RX1 mode and the IAB-MT-RX2 mode have different timings compared with the IAB-DU-RX1 mode, uplink transmission of the legacy UE performs data transmission based on the timing of the IAB-DU-RX1 mode. If the IAB-DU schedules the uplink transmission based on the IAB-MT-RX1 mode and the IAB-MT-RX2 mode timing, a new uplink transmission method is needed, and a new scheduling mechanism and uplink transmission timing are designed.

FIG. 2(a) is a flow chart of an embodiment of the method of the present application; FIG. 2(b) is a schematic diagram of a first timing difference of an embodiment of the method of the present application; FIG. 2(c) is a second timing differential diagram of an embodiment of the method of the present application; FIG. 2(d) is a first and second timing differential schematic diagram of an embodiment of the method of the present application; FIG. 2(e) is another first and second timing differential schematic diagram of an embodiment of the method of the present application; fig. 2(f) is a schematic diagram of uplink transmission of a terminal according to an embodiment of the present invention; fig. 2(g) is a schematic diagram of uplink transmission of another terminal according to the embodiment of the present invention.

Fig. 2(a) provides a full-duplex IAB uplink transmission method, which can be used for cellular network communication, and specifically includes the following steps 101 to 102:

step 101, first information, configured to directly or indirectly indicate timing advance information required for uplink transmission by the terminal device, where the timing advance information includes a first timing difference and/or a second timing difference.

In step 101, the first information may directly indicate timing advance information required for uplink transmission by the terminal device, the first timing difference is a timing difference between the IAB-MT-RX2 mode and the IAB-DU-RX1 mode, and the second timing difference is a timing difference between the IAB-MT-RX1 mode and the IAB-DU-RX1 mode.

The full-duplex IAB node has different reference timings in different operation modes, and as shown in fig. 2(b), the timing difference between the IAB-MT-RX2 mode and the IAB-DU-RX1 mode is the first timing difference. As shown in fig. 2(c), the timing difference between the IAB-MT-RX1 mode and the IAB-DU-RX1 mode is the second timing difference.

In step 101, the first information may also indirectly indicate timing advance information required for uplink transmission by the terminal device, and is used to calculate the first timing difference and/or the second timing difference.

For example, a first timing advance and a third timing difference are indicated in the first information, and are used for calculating the first timing difference and/or the second timing difference. The first timing advance is a timing advance of the IAB-MT-TX mode compared with the IAB-MT-RX1 mode, and the third timing difference is a timing difference required by the network device for switching between transmitting data and receiving data.

Further, as shown in fig. 2(d), in the IAB-MT-TX mode, it needs a timing advance TA _ IAB (the first timing advance) compared to the IAB-MT-RX1 mode, so that the uplink receiving timing of the IAB parent node is aligned when the data transmitted by the full-duplex IAB node arrives at the IAB parent node. In the 3GPP R16 standard, the timing difference of the IAB-DU-TX mode compared to the IAB-MT-RX1 mode is defined as TA _ IAB/2+ Tdelta, where the third timing difference Tdelta represents the timing difference required for switching between sending and receiving data at the IAB parent node.

If the IAB-DU-RX1 mode and the IAB-DU-TX mode adopt the same reference timing, and the IAB-MT-RX2 mode and the IAB-MT-TX mode adopt the same reference timing, the first timing difference can be calculated to be TA _ IAB/2-Tdelta, and the second timing difference is TA _ IAB/2+ Tdelta, which are both related to the first timing advance and the Tdelta.

For another example, the first information indicates a first timing advance and a third timing difference, and also indicates a fourth timing difference, and the first timing difference and/or the second timing difference are calculated according to the first timing advance, the third timing difference, and the fourth timing difference. Wherein the fourth timing difference is a timing difference of the IAB-DU-RX1 mode compared to the IAB-DU-TX mode.

Further, as shown in fig. 2(e), if the reference timings adopted by the IAB-DU-RX1 mode and the IAB-DU-TX mode are different by a fourth timing difference Tdelta2, and the reference timings adopted by the IAB-MT-RX2 mode and the IAB-MT-TX mode are the same, it can be deduced that the first timing difference is TA _ IAB/2-Tdelta 2, and the second timing difference is TA _ IAB/2+ Tdelta2, which are all related to the first timing advance, the third timing difference Tdelta, and the fourth timing difference Tdelta 2.

And 102, second information, configured to instruct the terminal device to send a transmission resource of the uplink data.

It should be noted that step 102 is an optional step in this embodiment.

In step 102, the second information sent by the full-duplex IAB node to the terminal device belongs to scheduling information, and is used for instructing the terminal to send transmission resources of uplink data based on the IAB-MT-RX2 mode timing or the IAB-MT-RX1 mode timing.

The specific implementation manner of the second information may be a DCI (downlink control information) or an RRC signaling, where the signaling includes a field indicating time domain and frequency domain transmission resources of uplink data, and the field indicates whether timing is based on the IAB-MT-RX2 mode or the IAB-MT-RX1 mode. The second information may be specifically implemented by indicating, through RRC signaling, time and frequency domain transmission resources of uplink data, and when the transmission resources are activated through DCI signaling, including a field indicating whether to perform timing based on the IAB-MT-RX2 mode or the IAB-MT-RX1 mode.

And if the second information is used for indicating the terminal equipment to send the transmission resources of the uplink data at the fixed time based on the IAB-MT-RX2 mode, the terminal equipment sends the uplink data to the full-duplex IAB according to the scheduling information in the second information, wherein the fixed time is earlier than the receiving time of the UE by the first fixed time difference plus TA _ UE. And TA _ UE is a second timing advance and represents the timing advance required by the UE for transmitting the uplink data at fixed time based on the IAB-DU-RX1 mode.

For example, as shown in fig. 2(f), the second information indicates that symbols 3 to 6 in a time slot n based on the IAB-MT-RX2 mode are scheduled for uplink transmission of the UE, and the timing advance of the time slot n symbol 3 to 6 in the uplink transmission timing of the UE is the sum of the first timing difference and the second timing advance compared with the timing advance of the time slot n symbol 3 to 6 in the uplink transmission timing of the UE-RX timing.

And if the second information is used for indicating the terminal equipment to send the transmission resources of the uplink data at the fixed time based on the IAB-MT-RX1 mode, the terminal sends the uplink data to the full-duplex IAB according to the scheduling information in the second information by subtracting the second timing difference from the TA _ UE which is compared with the receiving timing of the UE.

For example, as shown in fig. 2(g), the second information indicates that symbols 3-6 in the timeslot n based on the IAB-MT-RX1 mode are scheduled for uplink transmission of the UE, and the timing advance of the timeslot n symbols 3-6 in the uplink transmission timing of the UE is the difference between the second timing advance and the second timing difference compared with the timing advance of the timeslot n symbols 3-6 in the UE-RX timing.

The embodiment of the application provides a full-duplex IAB uplink transmission method, which can support a full-duplex IAB node to schedule the sending data of a receiving terminal side in an IAB-MT receiving mode, reduce the switching among the modes and effectively improve the resource utilization rate.

Fig. 3 is a flowchart of an embodiment of a method of the present application for a relay device.

The method of the first aspect of the application is used for relay equipment and comprises the following steps 201-202:

step 201, sending the first information to a terminal device.

Step 202, sending second information to the terminal device, and receiving uplink sending data of the terminal device according to the transmission resource of the uplink data sent by the terminal device indicated by the second information.

It should be noted that step 202 is an optional step in this embodiment.

It should be further noted that the relay device in the embodiment of the present invention may be a terminal device or a network device, and is not particularly limited herein.

Fig. 4 is a flowchart of an embodiment of the method of the present application for a terminal device.

The method of the first aspect of the application is applied to a terminal device, and comprises the following steps 301-302:

step 301, receiving first information sent by the relay device.

Step 302, receiving second information sent by the relay device, and sending uplink data to the relay device according to the transmission resource of the uplink data sent by the terminal device indicated by the second information.

It should be noted that step 302 is an optional step in this embodiment.

Fig. 5 is a schematic diagram of an embodiment of a network device.

A network device configured to implement the method of any embodiment of the first aspect of the present application. At least one module in the communication device for at least one of the following functions: and transmitting corresponding data to the relay equipment according to the IAB-MT-RX1 mode timing and the IAB-MT-RX2 mode timing.

In order to implement the foregoing technical solution, the communication device 500 provided in the present application includes a first sending module 501, a first determining module 502, and a first receiving module 503.

The first transmitting module is configured to transmit corresponding data to the relay device according to the IAB-MT-RX1 mode timing and the IAB-MT-RX2 mode timing.

The first determining module is configured to determine IAB-MT-TX mode timing.

The first receiving module is configured to receive uplink data of the relay device.

Other specific methods for implementing the functions of the first sending module, the first determining module, and the first receiving module are described in the embodiments of the methods of the present application, and are not described herein again.

The first device may be a base station device or a network side processing device connected to a base station.

Fig. 6 is a schematic diagram of an embodiment of a relay device.

A relay device, configured to implement the method of any embodiment of the first aspect of the present application. At least one module in the communication device for at least one of the following functions: sending first information used for indicating timing advance information required by uplink transmission of terminal equipment; receiving uplink data sent by the terminal equipment according to the timing advance information; the timing of IAB-MT-RX2 mode and IAB-MT-RX1 mode is determined.

In order to implement the foregoing technical solution, a relay device 600 provided in the present application includes a relay sending module 601, a relay determining module 602, and a relay receiving module 603.

The relay sending module is used for sending the first information and also used for sending the second information.

The relay determination module is used for determining the timing of the IAB-MT-RX2 mode and the IAB-MT-RX1 mode.

And the relay receiving module is used for receiving the uplink data sent by the terminal equipment according to the timing information.

Other specific methods for implementing the functions of the relay sending module, the relay determining module, and the relay receiving module are described in the embodiments of the methods of the present application, and are not described herein again.

The relay device may be a base station device or a network side processing device connected to the base station, and may also be a terminal device.

Fig. 7 is a schematic diagram of an embodiment of a terminal device.

A terminal device, configured to implement the method in any embodiment of the first aspect of the present application. At least one module in the communication device for at least one of the following functions: receiving first information used for indicating timing advance information required by uplink transmission of terminal equipment; and sending data to the relay equipment in an uplink mode according to the timing advance information.

In order to implement the foregoing technical solution, the terminal device 700 provided in the present application includes a second sending module 701, a second determining module 702, and a second receiving module 703.

And the second sending module is used for sending data to the relay device in an uplink mode.

And the second determining module is used for determining the timing advance information required by the uplink transmission of the terminal equipment according to the first information.

The second receiving module is configured to receive the first information and is further configured to receive second information.

Other specific methods for implementing the functions of the second sending module, the second determining module, and the second receiving module are described in the embodiments of the methods of the present application, and are not described herein again.

The terminal equipment can be mobile terminal equipment.

Fig. 8 shows a schematic structural diagram of a network device of the present invention. As shown, the network device 800 includes a processor 801, a wireless interface 802, and a memory 803. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the intermediate device, processing wireless signals by receiving and transmitting means, the data carried by the signals being communicated with the memory or processor via an internal bus structure. The memory 803 contains a computer program for executing any of the embodiments of the present application relating to the first device or the second device, which computer program is run or adapted on the processor 801. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein.

Fig. 9 is a block diagram of a relay device according to another embodiment of the present invention. Relay device 900 includes at least one processor 901, memory 902, network interface 903, and at least one control interface 904. The various components in intermediary device 900 are coupled together by a bus system. A bus system is used to enable connection communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

The control interface 904 is used to connect a phase transformation device (e.g., a super-surface device) of the intermediate device, and convert the sets of control parameters into driving signals of each surface unit, so as to adjust the reflection (or refraction) signals of the intermediate device.

Fig. 10 is a block diagram of a terminal device of the present invention.

Terminal device A00 includes at least one processor A01, memory A02, user interface A03, and at least one network interface A04. The various components in terminal device a00 are coupled together by a bus system. A bus system is used to enable connection communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

The user interface a03 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen.

9-10 memory 902, A02 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.

In an embodiment of the present invention, the memory 902 contains a computer program for executing any of the embodiments of the present application related to the intermediate device, or the memory a02 contains a computer program for executing any of the embodiments of the present application related to the first device or the second device, which computer program runs on or is changed by the processor 901, a 01.

The memories 902 and a02 contain computer readable storage media, and the processors 901 and a01 read the information in the memories 902 and a02 and combine the hardware to complete the steps of the method. In particular, the computer-readable storage medium has stored thereon a computer program, which when executed by the processor 901, a01, performs the steps of the method embodiment as described in any of the embodiments above.

The processor 901, a01 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by hardware integrated logic circuits in the processors 901 and a01 or by instructions in the form of software. The processors 901, a01 may be general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.

Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the

memory

803, 902, A02 of the present invention may include forms of volatile memory in computer-readable media, Random Access Memory (RAM) and/or non-volatile memory such as Read Only Memory (ROM) or flash memory (flash RAM).

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

Based on the embodiments of fig. 5 to 10, the present application further provides a mobile communication system including at least 1 embodiment of any intermediate device in the present application and/or at least 1 embodiment of any network device in the present application. Further, the mobile communication system further includes at least 1 embodiment of any terminal device in the present application.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

It should be noted that the terms "first" and "second" in the present application are used to distinguish a plurality of objects having the same name, and are not used to limit the order or size. Unless otherwise specified, no other special meanings are intended.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A full duplex IAB uplink transmission method is used in a wireless communication system, wherein the wireless communication system comprises network equipment, relay equipment and terminal equipment; the relay equipment comprises six modes of IAB-MT-TX, IAB-MT-RX1, IAB-MT-RX2, IAB-DU-TX, IAB-DU-RX1 and IAB-DU-RX2, and is characterized in that,

the first information is used for directly or indirectly indicating timing advance information required by uplink transmission of the terminal equipment and comprises a first timing difference and/or a second timing difference, the first timing difference is a timing difference between the IAB-MT-RX2 mode and the IAB-DU-RX1 mode, and the second timing difference is a timing difference between the IAB-MT-RX1 mode and the IAB-DU-RX1 mode.

2. The full-duplex IAB uplink transmission method of claim 1,

and the second information is used for indicating the transmission resource of the uplink data sent by the terminal equipment.

3. The full-duplex IAB uplink transmission method of claim 1,

the first information indicates a first timing advance and a third timing difference and is used for calculating the first timing difference and/or the second timing difference;

the first timing advance is the timing advance of the IAB-MT-TX mode compared with the IAB-MT-RX1 mode, and the third timing difference is the timing difference required by the network equipment for switching between data transmission and data reception.

4. The full-duplex IAB uplink transmission method of claim 2, wherein the second information is DCI or RRC signaling, and includes a field indicating time and frequency domain transmission resources of uplink data, and a field indicating whether the timing is based on an IAB-MT-RX2 mode or an IAB-MT-RX1 mode.

5. The full-duplex IAB uplink transmission method according to claim 2, wherein if the second information is used to instruct the terminal device to send the transmission resource of the uplink data based on the IAB-MT-RX2 mode timing, the terminal device sends the uplink data to the relay device by advancing the terminal receiving timing by the sum of the first timing difference and the second timing advance; and the second timing advance is the timing advance required by the terminal equipment to send uplink data based on the IAB-DU-RX1 mode timing.

6. The full-duplex IAB uplink transmission method according to claim 2, wherein if the second information is used to instruct the terminal device to send the transmission resource of the uplink data based on the IAB-MT-RX1 mode timing, the terminal device sends the uplink data to the relay device with a second timing advance less than the second timing difference before the terminal receiving timing; and the second timing advance is the timing advance required by the terminal equipment to send uplink data based on the IAB-DU-RX1 mode timing.

7. The full-duplex IAB uplink transmission method of claim 3,

the first information also indicates a fourth timing difference, and the first timing difference and/or the second timing difference are calculated according to the first timing advance, the third timing difference and the fourth timing difference;

the fourth timing difference is a timing difference of the IAB-DU-RX1 mode compared to the IAB-DU-TX mode.

8. The full-duplex IAB uplink transmission method according to claim 3, wherein if the IAB-DU-RX1 and the IAB-DU-TX mode use the same reference timing, and the IAB-MT-RX2 and the IAB-MT-TX mode use the same reference timing, the first timing difference is TA _ IAB/2-Tdelta, and the second timing difference is TA _ IAB/2+ Tdelta; and TA _ IAB is the first timing advance, and Tdelta is the third timing difference.

9. The full-duplex IAB uplink transmission method according to claim 7, wherein if the IAB-MT-RX2 and the IAB-MT-TX modes use the same reference timing, the first timing difference is TA _ IAB/2-Tdelta 2, and the second timing difference is TA _ IAB/2+ Tdelta 2; and TA _ IAB is the first timing advance, Tdelta is the third timing difference, and Tdelta2 is the fourth timing difference.

10. The full-duplex IAB uplink transmission method according to any one of claims 1 to 9, used for a relay device, comprising the steps of:

and sending the first information to the terminal equipment.

11. The full-duplex IAB uplink transmission method of claim 10, wherein the method further comprises: and sending second information to the terminal equipment, and receiving uplink sending data of the terminal equipment according to the transmission resource of the uplink data sent by the terminal equipment indicated by the second information.

12. The full-duplex IAB uplink transmission method according to any one of claims 1 to 9, used for a terminal device, comprising the steps of:

and receiving first information sent by the relay equipment.

13. The full-duplex IAB uplink transmission method of claim 12, wherein the method further comprises: and receiving second information sent by the relay equipment, and sending uplink data to the relay equipment according to the transmission resource of the uplink data sent by the terminal equipment indicated by the second information.

14. The full-duplex IAB uplink transmission method according to any one of claims 1 to 9, used for a network device, comprising the steps of:

IAB-MT-RX2 mode and IAB-MT-RX1 mode timing are indicated to the relay.

15. A communication device for implementing the method of any one of claims 1 to 9, wherein at least one module in the communication device is configured to perform at least one of the following functions: sending first information used for indicating timing advance information required by uplink transmission of terminal equipment; receiving uplink data sent by the terminal equipment according to the timing advance information; the timing of IAB-MT-RX2 mode and IAB-MT-RX1 mode is determined.

16. A communication device for implementing the method of any one of claims 1 to 9, wherein at least one module in the communication device is configured to perform at least one of the following functions: receiving first information used for indicating timing advance information required by uplink transmission of terminal equipment; and sending data to the relay equipment in an uplink mode according to the timing advance information.

17. A communication device for implementing the method of any one of claims 1 to 9, wherein at least one module in the communication device is configured to perform at least one of the following functions: and transmitting corresponding data to the relay equipment according to the IAB-MT-RX1 mode timing and the IAB-MT-RX2 mode timing.

18. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of claims 1 to 14.

19. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 14.