WO2023051615A1 - Guard symbol determination method and apparatus, and network device - Google Patents

Abstract

Disclosed in the present application are a guard symbol determination method and apparatus, and a network device, relating to the technical field of communication. The method of embodiments of the present application comprises: an integrated access backhaul (IAB) node determining guard symbol information of the IAB node according to timing mode information; a timing mode corresponding to the timing mode information comprises at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode being a current timing mode of the IAB node, and the second timing mode being a target timing mode to which the IAB node is to be switched.

Description

Method, device and network equipment for determining protection symbols

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202111162309.7 filed in China on September 30, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application belongs to the technical field of communication, and in particular relates to a method, device and network equipment for determining a protection symbol.

Background technique

In the Integrated Access Backhaul (IAB) of Release 17 (Release 17, R17), the mobile terminal (Mobile Termination, MT) and the distribution unit (Distributed Unit, DU) are supported as spatial division multiplexing (Spatial Domain Multiplexing, SDM) ) or frequency division multiplexing (Frequency Domain Multiplexing, FDM) resource multiplexing method, corresponding to the need to support Case 6 (Case 6) timing mode (timing mode), and Case 7 timing mode. In R16 IAB, only MT and DU are supported as Time Division Multiplexing (TDM) resource multiplexing mode, correspondingly supporting Case 1 timing mode. In R16, Case 1 timing mode is supported, and the guard symbol (Guard Symbol, GS) for switching between MT and DU entities is defined in Case 1 timing mode. If Case 6/Case 7 timing mode is introduced, switching between the same/different timing modes will result in different types and/or numbers of guard symbols switched between MT and DU. At this time, how to determine the relevant information of the guard symbols There are no related proposals yet.

Contents of the invention

Embodiments of the present application provide a method, device, and network device for determining a protection symbol, which can solve the problem of how to determine related information of the protection symbol in R17.

In the first aspect, a method for determining protection symbols is provided, including:

The self-backhaul IAB node determines the protection symbol information of the IAB node according to the timing mode information;

Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.

In the second aspect, a device for determining a protection symbol is provided, including:

A first determining module, configured to determine the protection symbol information of the IAB node according to the timing mode information;

Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.

In a third aspect, a network device is provided, including a processor, a memory, and a program or instruction stored on the memory and operable on the processor, and the program or instruction is implemented when executed by the processor. The steps of the method as described in the first aspect.

In a fourth aspect, a network device is provided, including a processor and a communication interface, wherein the processor is configured to determine protection symbol information of the IAB node according to timing mode information;

Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.

According to a fifth aspect, a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented.

A sixth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect .

In a seventh aspect, a computer program product is provided, the computer program product is stored in a non-transitory storage medium, and the program product is executed by at least one processor to implement the steps of the method described in the first aspect .

In an eighth aspect, there is provided a network device configured to implement the steps of the method described in the first aspect.

In the embodiment of the present application, the IAB node determines the protection symbol information of the IAB node according to the timing mode information, the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the The first timing mode is the current timing mode of the IAB node, and the second timing mode is the target timing mode to be switched by the IAB node, so that the information of the corresponding protection symbol can be determined for switching of different timing modes , so as to reduce the interference during switching.

Description of drawings

FIG. 1 is a schematic structural diagram of the IAB system;

Figure 2 shows a schematic diagram of the CU-DU structure of the IAB system;

FIG. 3 shows a schematic flowchart of a method for determining a protection symbol in an embodiment of the present application;

Fig. 4 shows the sequence diagram of switching between Case 1 timing mode and Case 6 timing mode in the embodiment of the present application;

Fig. 5 shows the sequence diagram of switching between Case 1 timing mode and Case 7 timing mode in the embodiment of the present application;

FIG. 6 shows a block diagram of a device for determining a protection symbol in an embodiment of the present application;

Fig. 7 represents one of the structural block diagrams of the network device of the embodiment of the present application;

FIG. 8 shows the second structural block diagram of the network device in the embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and "second" distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

It is worth pointing out that the technology described in the embodiment of this application is not limited to the Long Term Evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-Advanced, LTE-A) system, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technologies can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes, and uses NR terminology in most of the following descriptions. These technologies can also be applied to applications other than NR system applications, such as the 6th Generation (6 ^th Generation , 6G) communication system.

In order to enable those skilled in the art to better understand the present application, the IAB system is described below first.

The Integrated Access Backhaul (IAB) system is a technology that NR Rel-16 began to formulate standards. Figure 1 shows a schematic diagram of an IAB system. An IAB node includes a distributed unit (Distributed Unit, DU) functional part and a mobile terminal (Mobile Termination, MT) functional part. Relying on MT, an access point (ie IAB node) 11 can find an upstream access point (parent IAB node, parent node) 12, and establish a wireless connection with the DU of the upstream access point, which is called backhaul Link (backhaul link). After an IAB node establishes a complete backhaul link, the IAB node opens its DU function, and the DU will provide cell services for sub-nodes (including sub-IAB nodes and UEs), that is, the DU can provide access services for UEs. A self-backhaul loop includes a donor (donor) IAB node 13, the central unit (Centralized Unit, CU) in the donor IAB node has a wired transmission network directly connected to the DU, and the IAB MT and the IAB DU are connected and transmitted through hardware . The Donor IAB node controls the IAB-DU through the F1 Application Protocol (F1-Application Protocol, F1-AP) signaling, and the F1-AP signaling is encapsulated in the RRC signaling for transmission, and sent to the IAB MT, IAB MT transmits to IAB DU, and performs demodulation and information acquisition in IAB DU.

Fig. 2 is a central unit-distributed unit (Centralized Unit-Distributed Unit, CU-DU) structure diagram of an IAB system. A CU may also be referred to as a control unit. In a self-backhaul loop, the DUs of all IAB nodes are connected to a CU node, and this node configures the DUs through the F1-AP protocol. The CU configures the MT through the RRC protocol. Donor IAB node does not have MT functional part.

The introduction of the IAB system is to solve the situation that the wired transmission network is not properly deployed when the access points are densely deployed. That is, when there is no wired transmission network, the access point can rely on wireless backhaul.

The terminal configuration deactivation method provided by the embodiment of the present application will be described in detail below through some embodiments and application scenarios with reference to the accompanying drawings.

As shown in Figure 3, the embodiment of this application provides a method for determining a protection symbol, including:

Step 301: The self-backward IAB node determines the protection symbol information of the IAB node according to the timing mode information;

Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.

Optionally, the timing mode information includes a link status of the timing mode or an entity type in the timing mode;

Wherein, the link status of the timing mode includes at least one of the link status of the MT in the timing mode and the link status of the DU in the timing mode;

The entity type in the timing mode includes at least one of an MT in the timing mode and a DU in the timing mode.

In the embodiment of the present application, the switching of the IAB node includes at least one of switching between MT and DU of the IAB, switching between different timing modes of the IAB node, and switching between different link states of the IAB node.

The aforementioned link status includes at least one of MT sending status, MT receiving status, DU sending status and DU receiving status. In addition, the link state in this embodiment of the present application may also be referred to as a sending and receiving state.

Optionally, the aforementioned reference timing mode may be a Case 1 timing mode.

Optionally, the above-mentioned first timing mode can be Case 6 timing mode, Case 7 timing mode or Case 1 timing mode; the above-mentioned second timing mode can be Case 6 timing mode, Case 7 timing mode or Case 1 timing mode; or, The above-mentioned first timing mode or second timing mode is a newly defined timing mode Case X, and Case X is the corresponding timing mode in the scenario of simultaneous transmission of IAB node MT TX and DU RX; or, the above-mentioned first timing mode or second timing mode It is the timing mode corresponding to the scenario where the IAB node MT RX and DU TX transmit at the same time.

The above protection symbol can be understood as the switching time of the IAB node switching, or sufficient time resources reserved during the switching process.

In the embodiment of the present application, the IAB node determines the protection symbol information of the IAB node according to the timing mode information, the timing mode information includes the reference timing mode, the first timing mode of the IAB node and the second timing mode of the IAB node At least one of the modes, the first timing mode is the current timing mode of the IAB node, and the second timing mode is the target timing mode to be switched by the IAB node. In this way, different timing modes can be aimed at Handover, determine the information of the corresponding protection symbols, thereby reducing interference during handover.

In this embodiment of the present application, the information of the protection symbols includes a target number of protection symbols and a position of the protection symbols.

As a first optional implementation manner, the timing mode corresponding to the timing mode information includes a reference timing mode and a target timing mode, and the target timing mode includes at least one of the first timing mode and the second timing mode In one item, the guard symbol information of the IAB node includes the target number of guard symbols of the IAB node.

In the first optional implementation manner, according to the timing mode information, determining the protection symbol information of the IAB node includes:

determining the target number of guard symbols according to at least one of a first number and a second number, the first number being the number of guard symbols determined according to the reference timing pattern and the first timing pattern, the The second number is the number of guard symbols determined according to the reference timing pattern and the second timing pattern.

In this implementation manner, the above-mentioned first number and second number may be specifically determined according to first information, where the first information includes: the switching type of the IAB node and the number of protection symbols corresponding to the switching type of the IAB node;

Wherein, the switching type of the IAB node includes at least one of the following:

Switch between MT and DU;

switching between different link states;

Toggle between different timing modes.

Further, the determining the target number of the protection symbols according to at least one of the first number and the second number includes at least one of the following:

adding or subtracting the first number and the first preset value to obtain the target number;

adding or subtracting the second number to a second preset value to obtain the target number;

adding the first number to the second number to obtain the target number;

taking the absolute value of the difference between the first number and the second number as the target number;

taking the maximum value of the first value and the second value as the target number;

Wherein, the combination of the first value and the second value includes at least one of the following:

The first value is the first number, and the second value is the value obtained by adding the first number and the first preset value;

The first value is the first number, and the second value is a value obtained by subtracting the first number from the first preset value;

The first value is the second number, and the second value is a value obtained by adding the second number and a second preset value;

The first value is the second number, and the second value is a value obtained by subtracting the second number from a second preset value;

The first value is 0, and the second value is the absolute value of the difference between the first number and the second number;

The first value is the first number, and the second value is the second number.

As a second optional implementation manner, the timing mode corresponding to the timing mode information includes the first timing mode and the second timing mode, and the guard symbol information of the IAB node includes the target of the guard symbol of the IAB node number.

In the second optional implementation manner, the number of guard symbols of the IAB node is determined according to the first information, the first timing mode, and the second timing mode. The difference between this second optional implementation manner and the first optional implementation manner above is that in this second implementation manner, the number of guard symbols is not determined by reference to a timing pattern.

Optionally, the first preset value or the second preset value is determined according to at least one of a preset timing mode and a timing offset value in a target timing mode;

Alternatively, the first preset value or the second preset value is predefined or preconfigured or configured or indicated.

In a specific embodiment of the present application, assuming that the above-mentioned reference timing mode is the Case 1 timing mode, the above-mentioned first timing mode is the Case 6 timing mode or the above-mentioned second timing mode is the Case7 timing mode, the above-mentioned GS1 or GS2 can represent Case 1 The timing mode is switched to the number of guard symbols in Case1 timing mode. At this time, the number of guard symbols of the IAB node can be added or subtracted from GS1 and the first preset value, or GS2 can be added to or subtracted from the second preset value Addition or subtraction, for example, the number of guard symbols is GS1+K or GS2+K, K is a predefined or preconfigured or configured or indicated value, and K can be 1.

Alternatively, the number of protection symbols is GS1+L or GS2+L, where L is the number of symbols corresponding to the timing offset value in Case 6 timing mode or the number of symbols corresponding to the timing offset value in Case 7 timing mode. L may specifically be the number of symbols corresponding to the timing offset value that is rounded up, rounded down, or rounded up.

Optionally, switch from Case 6 timing mode to Case 7 timing mode, or, switch from Case 7 timing mode to Case 6 timing mode, or switch from Case 1 timing mode to Case 7 or Case 6 timing mode, or, switch from Case 1 timing mode to Case 7 or Case 6 timing mode, or, When switching from Case 7 or Case 6 timing mode to Case 1 timing mode, you can add or subtract GS1 to the first preset value (determined according to the timing offset value), or add GS2 to the second preset value ( The number of guard symbols is determined by adding or subtracting (determined according to the timing offset value).

In addition, in the embodiment itself, switching of the timing mode can also be described as switching between link states of the timing mode.

Optionally, in the embodiment of the present application, according to the first information (as shown in Table 1) corresponding to the switching of the transceiver mode of IAB DU/IAB MT under the reference timing mode, determine the first target transceiver state corresponding to the second timing mode The start time is the same as the start time of the second target transceiving state in the reference timing mode, and according to this, a guard symbol for the transition of the transceiving state in the second timing mode is determined. Wherein, the first target transceiving state is the transceiving state after the transceiving state transition in the second timing mode, and the second target transceiving state is the transceiving state after the transceiving state transition in the reference timing mode. Optionally, the number of guard symbols corresponding to the transceiving state transition in the second timing mode is not less than the number of guard symbols corresponding to the transceiving state transition in the reference timing mode.

In Table 1, when switching from MT DL Rx to DU DL Tx, the corresponding protection symbol is X1; when switching from MT DL Rx to DU UL Rx, the corresponding protection symbol is X2; switching from MT UL Tx to DU DL Tx When switching from MT UL Tx to DU UL Rx, the corresponding protection symbol is X3; when switching from MT UL Tx to DU UL Rx, the corresponding protection symbol is X4;

When switching from DU DL Tx to MT DL Rx, the corresponding protection symbol is X5; when switching from DU DL Tx to MT UL Tx, the corresponding protection symbol is X6; when switching from DU UL Rx to MT DL Rx, the corresponding protection symbol The symbol is X7; when switching from DU UL Rx to MT UL Tx, the corresponding protection symbol is X8.

Table 1

Optionally, in the embodiment of the present application, it also includes:

According to the target number of guard symbols of the IAB node and the reference sub-carrier spacing (Sub-Carrier Spacing, SCS) information of the guard symbols, determine the duration of the guard symbols of the IAB node, or apply to the MT/DU correspondence The number of symbols corresponding to the subcarrier spacing SCS of .

For example: if the number of guard symbols of the IAB node is 2, the reference subcarrier spacing SCS is 15 kHz. If the subcarrier spacing SCS of IAB MT is 30kHz, then the guard symbol of the IAB node applied to IAB MT is 4 OFDM symbols, that is, the target number of guard symbols*2 ^{Subcarrier spacing of IAB} MT/reference subcarrier ^interval .

Optionally, the information of the protection symbol includes the position of the protection symbol.

The position of the protection symbol includes at least one of the following:

The time unit corresponding to the resources of the DU;

The time unit corresponding to the resource of MT;

A time unit corresponding to the resource of the DU in the first timing mode;

The time unit corresponding to the resource of the MT in the first timing mode;

A time unit corresponding to the resource of the DU in the second timing mode;

The time unit corresponding to the resource of the MT in the second timing mode;

Refer to the time unit corresponding to the resources of the DU in the timing mode;

Refer to the time unit corresponding to the resource of the MT in the timing mode;

Refer to the time unit corresponding to the timing mode;

A time unit corresponding to the first timing mode;

A time unit corresponding to the second timing mode;

The time unit corresponding to the preset timing mode.

It should be noted that the resources in this embodiment of the present application include at least one of receiving resources and sending resources. The foregoing time unit may specifically be a time slot.

Optionally, determining the position of the guard symbol of the IAB node includes:

Determine the position of the guard symbol of the IAB node according to the agreement or first configuration information, where the first configuration information is used to indicate the time unit corresponding to the guard symbol.

Optionally, the position of the protection symbol is located in at least one of the first time unit and the second time unit;

Wherein, the first time unit is a time unit corresponding to DU or MT resources in the first timing mode, and the second time unit is a time unit corresponding to DU or MT resources in the second timing mode.

Optionally, the position of the protection symbol is located in at least one of the third time unit and the fourth time unit:

Wherein, the third time unit is a time unit corresponding to MT resources, and the fourth time unit is a time unit corresponding to DU resources.

Optionally, the method of the embodiment of the present application further includes:

Obtain target configuration information;

Determine the position of the protection symbol according to the target configuration information;

Wherein, the target configuration information includes at least one of the following:

Preset to reserve the protection symbol in the fifth time unit or the sixth time unit;

Preset priority to reserve the protection symbol in the fifth time unit or the sixth time unit;

After the protection symbols are reserved in the fifth time unit and/or the sixth time unit, the number of protection symbols corresponding to the remaining available transceiving resources in the fifth time unit and/or the sixth time unit;

After the protection symbol is reserved in the fifth time unit and/or the sixth time unit, in the fifth time unit and/or the sixth time unit, the identification information of the protection symbol corresponding to the remaining available transceiving resources;

Wherein, the fifth time unit is the time unit corresponding to the DU and/or MT resources in the first timing mode, and the sixth time unit is the time corresponding to the DU and/or MT resources in the second timing mode unit;

Alternatively, the fifth time unit is a time unit corresponding to the resource of the MT, and the sixth time unit is a time unit corresponding to the resource of the DU.

Optionally, the acquisition of target configuration information includes:

Obtain physical signaling or Medium Access Control Element (MAC CE) or F1 application protocol F1-AP signaling or RRC information sent by parent IAB node or host IAB node, or return access protocol packet data Unit (Backhaul Access Protocol Packet Data Unit, BAP PDU);

Wherein, the physical signaling or the MAC CE or F1 application protocol F1-AP signaling or RRC information or BAP PDU carries the target configuration information.

Optionally, in this embodiment of the present application, the timing mode information is determined according to first information, and the first information includes at least one of the following:

information indicating a switching type of the timing mode, the switching type of the timing mode indicating switching from the first timing mode to the second timing mode;

information indicating the switching type of the link state of the timing mode, the link state switching type of the timing mode indicating switching from the link state of the first timing mode to the link state of the second timing mode;

information indicating the switching type of the entity type of the timing mode, the switching type of the entity type of the timing mode indicating switching from the entity type of the first timing mode to the entity type of the second timing mode;

information indicating the second timing mode;

Information indicating the configured timing interval.

Wherein, the above-mentioned timing interval is the time indicated or configured by the high layer, and the time corresponding to the timing interval is greater than or equal to the time required for switching between the MT and the DU entity.

Specifically, the above-mentioned information indicating the switching type of the timing mode can be specifically indicated by N bits, for example, the switching between the Case 1 timing mode and the Case 6 timing mode is represented by a code point "00" in 2 bits (2bits) ;The switching between Case 1 timing mode and Case 7 timing mode is indicated by another code point "01" in 2bits; the switching between Case 6 timing mode and Case 7 timing mode is represented by another code point "10" in 2bits "express. Or, the switch between Case 1 timing mode and Case 6 timing mode is indicated by a code point "000" in 3bits; the switch between Case 1 timing mode and Case 7 timing mode is represented by another code point in 3bits "001" indicates; the switching between Case 6 timing mode and Case 7 timing mode is indicated by another code point "010" in 3bits; the switching between Case 6 timing mode and Case 1 timing mode is indicated by 3bits A code point "011" indicates; the switching between Case 7 timing mode and Case 1 timing mode is indicated by another code point "100" in 3bits; the switching between Case 7 timing mode and Case 6 timing mode is used Another code point "101" in 3bits represents; switching between Case 1 timing mode and Case 1 timing mode is represented by another code point "110" in 3bits.

Optionally, the method of the embodiment of the present application further includes:

Obtain physical signaling or media access layer control element (MAC CE), downlink control information (Downlink Control Information, DCI), F1 application protocol F1-AP signaling, RRC information or BAP PDU sent by the parent IAB node or host IAB node ;

Wherein, the MAC CE, DCI, F1-AP signaling, RRC information or BAP PDU carry the first information or the information indicating the reference subcarrier spacing SCS of the protection symbol.

That is to say, in the embodiment of the present application, the above-mentioned first information or the information indicating the SCS is configured or indicated by MAC CE, DCI, F1-AP signaling, RRC information or BAP PDU.

Below in conjunction with table 2 and Fig. 4 and the specific embodiment of Fig. 5, the method for determining the protection symbol of the present application is described, wherein Fig. 4 is a timing diagram of switching between Case 1 timing mode and Case 6 timing mode, and Fig. 5 is Case 1 Timing diagram for switching between timing mode and Case 7 timing mode. Wherein, delta is the time T_delta obtained from high-level instruction or configuration, at least including the time required for switching between MT and DU entities.

Embodiment 1: Assume that the reference timing mode is Case 1 timing mode, and the above-mentioned first information is carried by MAC CE, and the MAC CE includes the number of protection symbols corresponding to the 20 switching types shown in Table 2. The default timing mode in Table 2 means Case 1 timing mode, for example, MT TX means Case 1 MT TX.

The table 2 includes two parts: MT to DU and DU to MT; among them, MT to DU also includes MT RX switching to DU TX, MT RX switching to DU RX, MT RX switching to Case 7 DU RX, MT TX switching To DU TX, MT TX to DU RX, MT TX to Case 7 DU RX.

DU to MT includes switching from DU TX to MT RX, switching from DU TX to MT TX, switching from DU TX to Case 6 MT TX, switching from DU RX to MT RX, switching from DU RX to MT TX, switching from DU RX to Case 6 MT TX, Case 7 DU RX to MT RX, Case 7 DU RX to MT TX, MT TX to Case 6 MT TX, Case 6 MT TX to MT TX, DU RX to Case 1 DU RX and Case 7 DU RX to DU RX.

Table 2

(1) If the Case 1 timing mode is switched to the Case 6 timing mode (or Case7 timing mode or Case 1 timing mode), the number of protection symbols can be determined according to the above Table 2.

(2) If the Case 6 timing mode is switched to the Case 7 timing mode, the number of protection symbols corresponding to the Case 1 timing mode switching to the Case 7 timing mode can be obtained first according to the above table 2, and the IAB node can be based on the Case 1 timing mode or The timeline of the Case 7 timing mode to obtain the application time of the protection symbol.

Case 1, the number of protection symbols corresponding to switching from MT RX to Case 7 DU RX is GS1, then the GS 1 symbol at the end of the IAB MT RX time slot corresponding to Case 1 timing is not used by the IAB node, that is, Case 1 timing corresponds to The GS 1 symbol at the end of the IAB MT RX time slot is used as a protection symbol; or, the IAB node does not use the GS 1 symbol at the beginning of the IAB DU RX time slot corresponding to Case 7 timing, that is, the IAB DU corresponding to Case 7 timing The first GS 1 symbol of the RX slot is used as a guard symbol.

Case 2, the number of protection symbols corresponding to switching from MT TX to Case 7 DU RX is GS2, then the IAB node does not use the GS 2 symbols at the end of the IAB MT TX time slot corresponding to Case 1 timing, that is, Case 1 timing corresponds to The GS 2 symbols at the end of the IAB MT TX time slot are used as protection symbols; or, the IAB node does not use the GS 2 symbols at the beginning of the IAB DU RX time slot corresponding to Case 7 timing, that is, the IAB DU corresponding to Case 7 timing The GS 2 symbols at the beginning of the RX slot are used as guard symbols.

Case 3, the number of protection symbols corresponding to switching from MT RX to DU TX is GS3 (MT RX/DU TX timing corresponding to Case 1 and Case 7 timing is the same, and MT RX timing corresponding to Case 1 and Case 6 timing is different), then The IAB node does not use the GS 3 symbols at the end of the IAB MT RX time slot corresponding to Case 1 timing or Case 7 timing, that is, the GS 3 symbols at the end of the IAB MT RX time slot corresponding to Case 1 timing or Case 7 timing are used as Protection symbols; or, the IAB node does not use the GS 3 symbols at the beginning of the IAB DU TX time slot corresponding to Case 1 timing or Case 7 timing, that is, the beginning of the IAB DU TX time slot corresponding to Case 1 timing or Case 7 timing GS 3 symbols as protection symbols.

Case 4, the number of protection symbols corresponding to switching from MT TX to DU TX is GS4 (MT RX/DU TX timing corresponding to Case 1 and Case 7 timing is the same), then the IAB node uses the IAB corresponding to Case 1 timing or Case 7 timing The GS 4 symbols at the end of the MT TX time slot are not used, that is, the GS 4 symbols at the end of the IAB MT TX time slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols; or, the IAB node uses Case 1 timing or Case 7 timing The GS 4 symbols at the beginning of the IAB DU TX time slot corresponding to 7 timing are not used, that is, the GS 4 symbols at the beginning of the IAB DU TX time slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols.

Case 5, the number of protection symbols corresponding to switching from DU RX to MT RX is GS5 (MT RX/DU TX timing corresponding to Case 1 and Case 7 timing is the same), then the IAB node uses the IAB corresponding to Case 1 timing or Case 7 timing The GS 5 symbols at the end of the DU RX slot are not used, that is, the GS 5 symbols at the end of the IAB DU RX slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols; or, the IAB node uses Case 1 timing or Case The 5 GS symbols at the beginning of the IAB MT RX time slot corresponding to 7 timing are not used, that is, the 5 GS symbols at the beginning of the IAB MT RX time slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols.

Case 6, the number of protection symbols corresponding to switching from DU RX to MT TX is GS6, then the GS 6 symbols at the end of the IAB DU RX time slot corresponding to Case 1 timing or Case 7 timing of the IAB node are not used, that is, Case 1 The GS6 symbols at the end of the IAB DU RX slot corresponding to timing or Case 7 timing are used as protection symbols; or, the IAB node does not use the GS 6 symbols at the beginning of the IAB MT TX slot corresponding to Case 1 timing or Case 7 timing , that is, the GS 6 symbols at the beginning of the IAB MT TX time slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols.

Case 7, the number of protection symbols corresponding to switching from DU TX to MT RX is GS7 (MT RX/DU TX timing corresponding to Case 1 and Case 7 timing is the same), then the IAB node uses the IAB corresponding to Case 1 timing or Case 7 timing The GS 7 symbols at the end of the DU TX time slot are not used, that is, the GS 7 symbols at the end of the IAB DU TX time slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols; or, the IAB node uses Case 1 timing or Case 7 The 7 GS symbols at the beginning of the IAB MT RX time slot corresponding to 7 timing are not used, that is, the 7 GS symbols at the beginning of the IAB MT RX time slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols.

Case 8, the number of protection symbols corresponding to switching from DU TX to MT TX is GS8, then the GS 8 symbols at the end of the IAB DU TX time slot corresponding to Case 1 timing or Case 7 timing of the IAB node are not used, that is, Case 1 The GS8 symbols at the end of the IAB DU TX slot corresponding to timing or Case 7 timing are used as guard symbols; or, the IAB node does not use the GS 8 symbols at the beginning of the IAB MT TX slot corresponding to Case 1 timing or Case 7 timing , that is, the GS 8 symbols at the beginning of the IAB MT TX time slot corresponding to Case 1 timing or Case 7 timing are used as protection symbols.

(3) If the Case 7 timing mode is switched to the Case 6 timing mode, the number of protection symbols corresponding to the Case 1 timing mode switching to the Case 6 timing mode can be obtained first according to the above table 2, and the IAB node can be based on the Case 1 timing mode or The timeline of Case 6 timing mode to obtain the application time of the protection symbol.

It should be noted that, in the following cases 1 to 4 and case 8, the timing sequence of the link states corresponding to Case 1, Case 6, and Case 7 is the same, so referring to Case 1 timing is equivalent to referring to Case 7 timing.

Case 1, the number of protection symbols corresponding to switching from MT RX to DU RX is GS1, then the GS 1 symbol at the end of the IAB MT RX time slot corresponding to Case 1 timing or Case 6 timing of the IAB node is not used, that is, Case 1 The GS1 symbols at the end of the IAB MT RX slot corresponding to timing or Case 6 timing are used as guard symbols; or, the IAB node does not use the GS 1 symbol at the beginning of the IAB DU RX slot corresponding to Case 1 timing or Case 6 timing , that is, the GS 1 symbol at the beginning of the IAB DU RX time slot corresponding to Case 1 timing or Case 6 timing is used as a protection symbol.

Case 2, the number of protection symbols corresponding to switching from MT TX to DU RX is GS2, then the GS 2 symbols at the end of the IAB MT TX time slot corresponding to Case 1 timing or Case 6 timing of the IAB node are not used, that is, Case 1 The GS2 symbols at the end of the IAB MT TX slot corresponding to timing or Case 6 timing are used as guard symbols; or, the IAB node does not use the GS 2 symbols at the beginning of the IAB DU RX slot corresponding to Case 1 timing or Case 6 timing , that is, the GS 2 symbols at the beginning of the IAB DU RX slot corresponding to Case 1 timing or Case 6 timing are used as protection symbols.

Case 3, the number of protection symbols corresponding to switching from MT RX to DU TX is GS3, then the GS 3 symbols at the end of the IAB MT RX time slot corresponding to Case 1 timing or Case 6 timing of the IAB node are not used, that is, Case 1 The GS3 symbols at the end of the IAB MT RX slot corresponding to timing or Case 6 timing are used as guard symbols; or, the IAB node does not use the GS 3 symbols at the beginning of the IAB DU TX slot corresponding to Case 1 timing or Case 6 timing , that is, the GS 3 symbols at the beginning of the IAB DU TX slot corresponding to Case 1 timing or Case 6 timing are used as protection symbols.

Case 4, the number of protection symbols corresponding to switching from MT TX to DU TX is GS4, then the GS 4 symbols at the end of the IAB MT TX time slot corresponding to Case 1 timing or Case 6 timing of the IAB node are not used, that is, Case 1 The GS4 symbols at the end of the IAB MT TX slot corresponding to timing or Case 6 timing are used as guard symbols; or, the IAB node does not use the GS 4 symbols at the beginning of the IAB DU TX slot corresponding to Case 1 timing or Case 6 timing , that is, the GS 4 symbols at the beginning of the IAB DU TX slot corresponding to Case 1 timing or Case 6 timing are used as protection symbols.

Case 5, the number of protection symbols corresponding to switching from DU RX to Case 6 MT RX is GS5 (MT RX/DU TX timing corresponding to Case 1 and Case 6 timing is the same, and DU RX timing corresponding to Case 1 and Case 7 timing is different) , the IAB node does not use the GS 5 symbols at the end of the IAB DU RX time slot corresponding to Case 1 timing, that is, the GS 5 symbols at the end of the IAB DU RX time slot corresponding to Case 1 timing are used as protection symbols; or, IAB The node does not use the GS 5 symbols at the beginning of the IAB MT RX time slot corresponding to Case 6 timing, that is, the GS 5 symbols at the beginning of the IAB MT RX time slot corresponding to Case 6 timing are used as protection symbols.

Case 6, the number of protection symbols corresponding to switching from DU RX to MT TX is GS6 (the DU RX/MT TX timing corresponding to Case 1 and Case 6 timing is the same, and the DU RX timing corresponding to Case 1 and Case 7 timing is different), then The IAB node does not use the GS 6 symbols at the end of the IAB DU RX slot corresponding to Case 1 timing or Case 6 timing, that is, the GS 6 symbols at the end of the IAB DU RX slot corresponding to Case 1 timing or Case 6 timing are used as Protection symbols; or, the IAB node does not use the GS 6 symbols at the beginning of the IAB MT TX time slot corresponding to Case 1 timing or Case 6 timing, that is, the beginning of the IAB MT TX time slot corresponding to Case 1 timing or Case 6 timing GS 6 symbols are used as protection symbols.

Case 7, the number of protection symbols corresponding to switching from DU TX to Case 6 MT RX is GS7, then the GS 7 symbols at the end of the IAB DU TX time slot corresponding to Case 1 timing are not used by the IAB node, that is, Case 1 timing corresponds to The GS 7 symbols at the end of the IAB DU TX time slot are used as protection symbols; or, the IAB node does not use the GS 7 symbols at the beginning of the IAB MT RX time slot corresponding to Case 6 timing, that is, the IAB MT corresponding to Case 6 timing The first GS 7 symbols of the RX slot are used as guard symbols.

Case 8, the number of protection symbols corresponding to switching from DU TX to MT TX is GS8, then the GS 8 symbols at the end of the IAB DU TX time slot corresponding to Case 1 timing or Case 6 timing of the IAB node are not used, that is, Case 1 The GS8 symbols at the end of the IAB DU TX slot corresponding to timing or Case 6 timing are used as guard symbols; or, the IAB node does not use the GS 8 symbols at the beginning of the IAB MT TX slot corresponding to Case 1 timing or Case 6 timing , that is, the 8 GS symbols at the beginning of the IAB MT TX time slot corresponding to Case 1 timing or Case 6 timing are used as protection symbols.

Embodiment two

In this embodiment, the protocol defines the timing mode switching indication and switching type, such as the type of timing mode switching indicated by 2bits, the timing mode switching includes the switching of Case 1 timing and Case 6 timing; or the switching of Case 1 timing and Case 7 timing Switch; or switch between Case 6 timing and Case 7 timing.

Case 1, if the indication is a switch between Case 1 timing and Case 6 timing, then the corresponding protection symbol indicates the following switch types:

Switch type 1: MT TX to MT TX;

Switching type 2: DU TX switching to MT TX (when switching from Case 1 to Case 6, the preset is 0 or 1 symbol (symbol), or determined according to the T_delta indicated by the high layer);

Switching type 3: Switching from DU RX to MT TX;

Switching type 4: DU TX switching to MT RX;

Switching type 5: Switching from DU RX to MT RX;

Switching type 6: Switching from MT RX to DU TX;

Switching type 7: Switching from MT RX to DU RX;

Switching type 8: Switching from MT TX to DU TX (when switching from Case 6 to Case 1, the default is 0 or 1 symbol, or determined according to the T_delta indicated by the high-level);

Handover type 9: MT TX to DU RX.

Case 2, if the indication is a switch between Case 1 timing and Case 7 timing, then the protection symbol corresponding to indicate the following switch types:

Switching type 1: Switching from DU RX to DU RX;

Switching type 2: Switching from MT RX to DU RX (when switching from Case 1 to Case 7, it is 0 or N+1 symbols, or determined according to the T_delta indicated by the high layer, N represents the symbol offset of the symbol alignment, and N is an integer 0 );

Switching type 3: MT TX switching to DU RX;

Switching type 4: Switching from MT RX to DU TX;

Handover type 5: MT TX to DU TX;

Switching type 6: DU TX switching to MT RX;

Handover type 7: DU TX to MT TX;

Switching type 8: Switching from DU RX to MT RX (when switching from Case 7 to Case 1, it is 0 or N+1 symbols, or determined according to the T_delta indicated by the high layer, N represents the symbol offset of the symbol alignment, and N is an integer 0 );

Switching type 9: Switching from DU RX to MT TX.

In case 3, if the indication is a switch between Case 6 timing and Case 7 timing, then the protection symbol corresponding to the following switching type is indicated:

Switch type 1: MT TX to MT TX;

Switch type 2: switch from DU RX to DU RX;

Switching type 3: DU TX switching to MT TX;

Switching type 4: Switching from DU RX to MT TX;

Switching type 5: DU TX switching to MT RX;

Switching type 6: Switching from DU RX to MT RX;

Switching type 7: MT RX switching to DU TX;

Switching type 8: Switching from MT RX to DU RX;

Handover type 9: MT TX to DU TX;

Handover type 10: MT TX to DU RX.

In addition, in the embodiment of the present application, the type of timing mode switching can also be indicated by 3 bits, and the type of timing mode switching includes switching between Case 1 timing and Case 6 timing, switching between Case 6 timing and Case 1 timing, and switching between Case 1 timing and Case 1 timing. Switching between Case 7 timing, switching between Case 7 timing and Case 1 timing, switching between Case 6 timing and Case 7 timing, or switching between Case 7 timing and Case 6 timing.

Embodiment three

The protocol defines the switching table between MT and DU, between MT and MT, or between DU and DU in Case 1, Case 6 or Case 7, as shown in Table 3. The content corresponding to Table 3 is the above-mentioned first information.

table 3

The above Table 3 includes configurations of 22 kinds of guard symbols, and the IAB node (via MAC CE) reports the number of guard symbols (guard symbols) corresponding to the above 22 guard symbol types. Each type of guard symbol uses 3 bits to indicate the number.

The parent IAB node (via MAC CE) indicates the number of guard symbols corresponding to the IAB node guard symbol type. Each type of guard symbol uses 3 bits to indicate the number.

In the embodiment of the present application, the IAB node determines the protection symbol information of the IAB node according to the timing mode information, the timing mode information includes the reference timing mode, the first timing mode before the IAB node switching and the second timing mode after the IAB node switching In this way, corresponding guard symbols can be determined for the switching of different timing modes, thereby avoiding interference during switching.

It should be noted that, the method for determining the protection symbol provided in the embodiment of the present application may be executed by the device for determining the protection symbol, or a control module in the device for determining the protection symbol that is used to execute the method for determining the protection symbol. In the embodiment of the present application, the device for determining the protection symbol provided in the embodiment of the present application is described by taking the device for determining the protection symbol to execute the method for determining the protection symbol as an example.

As shown in Figure 6, the embodiment of the present application provides a device 600 for determining a protection symbol, which is applied to an IAB node, and the device includes:

The first determination module 601 is configured to determine the protection symbol information of the IAB node according to the timing mode information;

Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.

Optionally, the device in the embodiment of the present application further includes: a determining module, configured to determine the timing mode information.

Optionally, in the device of the embodiment of the present application, the timing mode information includes a link state of the timing mode or an entity type in the timing mode;

Wherein, the link status of the timing mode includes at least one of the link status of the MT in the timing mode and the link status of the DU in the timing mode;

The entity type in the timing mode includes at least one of an MT in the timing mode and a DU in the timing mode.

Optionally, in the device of the embodiment of the present application, the timing mode corresponding to the timing mode information includes a reference timing mode and a target timing mode, and the target timing mode includes the first timing mode and the second timing mode. At least one item, the guard symbol information of the IAB node includes a target number of guard symbols of the IAB node.

Optionally, in the device of the embodiment of the present application, the first determination module is configured to determine the target number of the protection symbols according to at least one of the first number and the second number, the first number is based on the The number of guard symbols determined according to the reference timing mode and the first timing mode, and the second number is the number of guard symbols determined according to the reference timing mode and the second timing mode.

Optionally, in the device of the embodiment of the present application, the first determining module is configured to perform at least one of the following:

adding or subtracting the first number and the first preset value to obtain the target number;

adding or subtracting the second number to a second preset value to obtain the target number;

adding the first number to the second number to obtain the target number;

taking the absolute value of the difference between the first number and the second number as the target number;

taking the maximum value of the first value and the second value as the target number;

Wherein, the combination of the first value and the second value includes at least one of the following:

The first value is the first number, and the second value is the value obtained by adding the first number and the first preset value;

The first value is the first number, and the second value is a value obtained by subtracting the first number from the first preset value;

The first value is the second number, and the second value is a value obtained by adding the second number and a second preset value;

The first value is the second number, and the second value is a value obtained by subtracting the second number from a second preset value;

The first value is 0, and the second value is the absolute value of the difference between the first number and the second number;

The first value is the first number, and the second value is the second number.

Optionally, in the apparatus of the embodiment of the present application, the timing mode corresponding to the timing mode information includes the first timing mode and the second timing mode, and the guard symbol information of the IAB node includes the guard symbol of the IAB node. number of targets.

Optionally, the device of the embodiment of the present application further includes:

The second determination module is configured to determine the duration of the guard symbols of the IAB node according to the target number of guard symbols of the IAB node and the reference subcarrier spacing SCS information of the guard symbols.

Optionally, in the device of the embodiment of the present application, the first preset value or the second preset value is determined according to at least one of a preset timing mode and a timing offset value in a target timing mode;

Alternatively, the first preset value or the second preset value is predefined or preconfigured or configured or indicated.

Optionally, in the device of the embodiment of the present application, the protection symbol information includes the position of the protection symbol.

Optionally, in the device of the embodiment of the present application, the position of the protection symbol includes at least one of the following:

The time unit corresponding to the resources of the DU;

The time unit corresponding to the resource of MT;

A time unit corresponding to the resource of the DU in the first timing mode;

The time unit corresponding to the resource of the MT in the first timing mode;

A time unit corresponding to the resource of the DU in the second timing mode;

The time unit corresponding to the resource of the MT in the second timing mode;

Refer to the time unit corresponding to the resources of the DU in the timing mode;

Refer to the time unit corresponding to the resource of the MT in the timing mode;

Refer to the time unit corresponding to the timing mode;

A time unit corresponding to the first timing mode;

A time unit corresponding to the second timing mode;

The time unit corresponding to the preset timing mode.

Optionally, in the apparatus of the embodiment of the present application, the first determination module is configured to determine the position of the protection symbol of the IAB node according to the agreement or first configuration information, and the first configuration information is used to indicate the The time unit corresponding to the protection symbol.

Optionally, in the device of the embodiment of the present application, the position of the protection symbol is located in at least one of the first time unit and the second time unit;

Wherein, the first time unit is a time unit corresponding to DU or MT resources in the first timing mode, and the second time unit is a time unit corresponding to DU or MT resources in the second timing mode.

Optionally, in the device of the embodiment of the present application, the position of the protection symbol is located in at least one of the third time unit and the fourth time unit:

Wherein, the third time unit is a time unit corresponding to MT resources, and the fourth time unit is a time unit corresponding to DU resources.

Optionally, the device of the embodiment of the present application further includes:

The first obtaining module is used to obtain target configuration information;

A third determining module, configured to determine the position of the protection symbol according to the target configuration information;

Wherein, the target configuration information includes at least one of the following:

Preset to reserve the protection symbol in the fifth time unit or the sixth time unit;

Preset priority to reserve the protection symbol in the fifth time unit or the sixth time unit;

After the protection symbols are reserved in the fifth time unit and/or the sixth time unit, the number of protection symbols corresponding to the remaining available transceiving resources in the fifth time unit and/or the sixth time unit;

After the protection symbol is reserved in the fifth time unit and/or the sixth time unit, in the fifth time unit and/or the sixth time unit, the identification information of the protection symbol corresponding to the remaining available transceiving resources;

Wherein, the fifth time unit is the time unit corresponding to the DU and/or MT resources in the first timing mode, and the sixth time unit is the time corresponding to the DU and/or MT resources in the second timing mode unit;

Alternatively, the fifth time unit is a time unit corresponding to the resource of the MT, and the sixth time unit is a time unit corresponding to the resource of the DU.

Optionally, in the device of the embodiment of the present application, the first obtaining module is used to obtain the physical signaling sent by the parent IAB node or the host IAB node or the MAC CE of the media access layer control unit or the F1 application protocol F1-AP signaling Or RRC information or backhaul access protocol packet data unit BAP PDU;

Wherein, the physical signaling or the MAC CE or F1 application protocol F1-AP signaling or RRC information or BAP PDU carries the target configuration information.

Optionally, in the device of the embodiment of the present application, the timing mode information is determined according to first information, and the first information includes at least one of the following:

information indicating a switching type of the timing mode, the switching type of the timing mode indicating switching from the first timing mode to the second timing mode;

information indicating the switching type of the link state of the timing mode, the link state switching type of the timing mode indicating switching from the link state of the first timing mode to the link state of the second timing mode;

information indicating the switching type of the entity type of the timing mode, the switching type of the entity type of the timing mode indicating switching from the entity type of the first timing mode to the entity type of the second timing mode;

information indicating the second timing mode;

Information indicating the configured timing interval.

Optionally, the device of the embodiment of the present application further includes:

The second obtaining module is used to obtain physical signaling or media access layer control unit MAC CE, downlink control information DCI, F1 application protocol F1-AP signaling, RRC information or BAP PDU sent by the parent IAB node or the host IAB node;

Wherein, the MAC CE, downlink control information DCI, F1 application protocol F1-AP signaling, RRC information or BAP PDU carry the first information or the information indicating the reference subcarrier spacing SCS of the protection symbol.

The device in the embodiment of the present application determines the protection symbol information of the IAB node according to the timing mode information, the timing mode information includes a reference timing mode, the first timing mode of the IAB node and the second timing mode of the IAB node At least one of the above, the first timing mode is the current timing mode of the IAB node, and the second timing mode is the target timing mode to be switched by the IAB node. In this way, it is possible to switch between different timing modes , to determine the information of the corresponding guard symbol, thereby reducing the interference during handover.

The device for determining the protection symbol in the embodiment of the present application may be a device, or a component, an integrated circuit, or a chip in a network device.

The device for determining the protection symbol provided by the embodiment of the present application can implement the various processes realized by the method embodiments in Fig. 1 to Fig. 5 and achieve the same technical effect. In order to avoid repetition, details are not repeated here.

Optionally, as shown in FIG. 7 , the embodiment of the present application also provides a network device 700, which may be specifically an IAB node, and the network device includes a processor 701, a memory 702, which is stored in the memory 702 and can be stored in the memory 702. The program or instruction running on the processor 701, when the program or instruction is executed by the processor 701, implements the various processes of the above-mentioned method for determining the protection symbol, and can achieve the same technical effect. In order to avoid repetition, it is not repeated here repeat.

As shown in FIG. 8 , the embodiment of the present application also provides a network device, and the network device 800 includes: an antenna 801 , a radio frequency device 802 , and a baseband device 803 . The antenna 801 is connected to the radio frequency device 802 . In the uplink direction, the radio frequency device 802 receives information through the antenna 801, and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be sent and sends it to the radio frequency device 802 , and the radio frequency device 802 processes the received information and sends it out through the antenna 801 .

The foregoing frequency band processing apparatus may be located in the baseband apparatus 803 , and the method performed by the network device in the above embodiments may be implemented in the baseband apparatus 803 , and the baseband apparatus 803 includes a processor 804 and a memory 805 .

The baseband device 803 may include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG. Operations shown in the method examples above.

The baseband device 803 may further include a network interface 806 for exchanging information with the radio frequency device 802, and the interface is, for example, a common public radio interface (CPRI for short).

Specifically, the network device in the embodiment of the present application also includes: instructions or programs stored in the memory 805 and executable on the processor 804, and the processor 804 calls the instructions or programs in the memory 805 to execute the modules shown in FIG. 6 method, and achieve the same technical effect, in order to avoid repetition, it is not repeated here.

The embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by the processor, each process of the above-mentioned method for determining the protection symbol is implemented, and can To achieve the same technical effect, in order to avoid repetition, no more details are given here.

Wherein, the processor is a processor in the network device in the foregoing embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run programs or instructions, and implement the method for determining the above-mentioned protection symbol Each process of the example, and can achieve the same technical effect, in order to avoid repetition, will not repeat them here.

An embodiment of the present application further provides a computer program product, the computer program product is stored in a non-transitory storage medium, and the program product is executed by at least one processor to implement the steps of the method for determining the protection symbol above.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims (31)

1. A method for determining a protection symbol, comprising:

   The self-backhaul IAB node determines the protection symbol information of the IAB node according to the timing mode information;

   Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.
2. The method according to claim 1, wherein the timing mode information comprises a link state of the timing mode or an entity type in the timing mode;

   Wherein, the link status of the timing mode includes at least one of the link status of the MT in the timing mode and the link status of the DU in the timing mode;

   The entity type in the timing mode includes at least one of an MT in the timing mode and a DU in the timing mode.
3. The method according to claim 1 or 2, wherein the timing mode corresponding to the timing mode information includes a reference timing mode and a target timing mode, and the target timing mode includes the first timing mode and the second timing mode In at least one of the above, the guard symbol information of the IAB node includes a target number of guard symbols of the IAB node.
4. The method according to claim 3, wherein, according to the timing mode information, determining the protection symbol information of the IAB node comprises:

   determining the target number of guard symbols according to at least one of a first number and a second number, the first number being the number of guard symbols determined according to the reference timing pattern and the first timing pattern, the The second number is the number of guard symbols determined according to the reference timing pattern and the second timing pattern.
5. The method according to claim 4, wherein said determining the target number of guard symbols according to at least one of the first number and the second number comprises at least one of the following:

   adding or subtracting the first number and the first preset value to obtain the target number;

   adding or subtracting the second number to a second preset value to obtain the target number;

   adding the first number to the second number to obtain the target number;

   taking the absolute value of the difference between the first number and the second number as the target number;

   taking the maximum value of the first value and the second value as the target number;

   Wherein, the combination of the first value and the second value includes at least one of the following:

   The first value is the first number, and the second value is the value obtained by adding the first number and the first preset value;

   The first value is the first number, and the second value is a value obtained by subtracting the first number from the first preset value;

   The first value is the second number, and the second value is a value obtained by adding the second number and a second preset value;

   The first value is the second number, and the second value is a value obtained by subtracting the second number from a second preset value;

   The first value is 0, and the second value is the absolute value of the difference between the first number and the second number;

   The first value is the first number, and the second value is the second number.
6. The method according to claim 5, wherein the first preset value or the second preset value is determined according to at least one of a preset timing mode and a timing offset value in a target timing mode;

   Alternatively, the first preset value or the second preset value is predefined or preconfigured or configured or indicated.
7. The method according to claim 1 or 2, wherein the timing mode corresponding to the timing mode information includes the first timing mode and the second timing mode, and the protection symbol information of the IAB node includes the protection symbol information of the IAB node The number of targets for the symbol.
8. The method according to any one of claims 3-7, wherein the method further comprises:

   The duration of the guard symbols of the IAB node is determined according to the target number of guard symbols of the IAB node and the reference subcarrier spacing SCS information of the guard symbols.
9. The method of claim 1, wherein the guard symbol information includes a position of the guard symbol.
10. The method according to claim 9, wherein the position of the protection symbol comprises at least one of the following:

    The time unit corresponding to the resources of the DU;

    The time unit corresponding to the resource of MT;

    A time unit corresponding to the resource of the DU in the first timing mode;

    The time unit corresponding to the resource of the MT in the first timing mode;

    A time unit corresponding to the resource of the DU in the second timing mode;

    The time unit corresponding to the resource of the MT in the second timing mode;

    Refer to the time unit corresponding to the resources of the DU in the timing mode;

    Refer to the time unit corresponding to the resource of the MT in the timing mode;

    Refer to the time unit corresponding to the timing mode;

    A time unit corresponding to the first timing mode;

    A time unit corresponding to the second timing mode;

    The time unit corresponding to the preset timing mode.
11. The method according to claim 9, wherein determining the position of the guard symbol of the IAB node comprises:

    Determine the position of the guard symbol of the IAB node according to the agreement or first configuration information, where the first configuration information is used to indicate the time unit corresponding to the guard symbol.
12. The method of claim 9, wherein,

    The position of the guard symbol is located at least one of the first time unit and the second time unit;

    Wherein, the first time unit is a time unit corresponding to DU or MT resources in the first timing mode, and the second time unit is a time unit corresponding to DU or MT resources in the second timing mode.
13. The method according to claim 9, wherein the position of the guard symbol is at least one of the third time unit and the fourth time unit:

    Wherein, the third time unit is a time unit corresponding to MT resources, and the fourth time unit is a time unit corresponding to DU resources.
14. The method according to claim 1, further comprising:

    Obtain target configuration information;

    Determine the position of the protection symbol according to the target configuration information;

    Wherein, the target configuration information includes at least one of the following:

    Preset to reserve the protection symbol in the fifth time unit or the sixth time unit;

    Preset priority to reserve the protection symbol in the fifth time unit or the sixth time unit;

    After the protection symbols are reserved in the fifth time unit and/or the sixth time unit, the number of protection symbols corresponding to the remaining available transceiving resources in the fifth time unit and/or the sixth time unit;

    After the protection symbol is reserved in the fifth time unit and/or the sixth time unit, in the fifth time unit and/or the sixth time unit, the identification information of the protection symbol corresponding to the remaining available transceiving resources;

    Wherein, the fifth time unit is the time unit corresponding to the DU and/or MT resources in the first timing mode, and the sixth time unit is the time corresponding to the DU and/or MT resources in the second timing mode unit;

    Alternatively, the fifth time unit is a time unit corresponding to the resource of the MT, and the sixth time unit is a time unit corresponding to the resource of the DU.
15. The method according to claim 14, wherein said acquiring target configuration information comprises:

    Obtain the physical signaling or media access layer control unit MAC CE or F1 application protocol F1-AP signaling or RRC information sent by the parent IAB node or the host IAB node, or return the access protocol packet data unit BAP PDU;

    Wherein, the physical signaling or the MAC CE or F1 application protocol F1-AP signaling or RRC information or BAP PDU carries the target configuration information.
16. The method according to claim 2, wherein the timing mode information is determined according to first information, and the first information includes at least one of the following:

    information indicating a switching type of the timing mode, the switching type of the timing mode indicating switching from the first timing mode to the second timing mode;

    information indicating the switching type of the link state of the timing mode, the link state switching type of the timing mode indicating switching from the link state of the first timing mode to the link state of the second timing mode;

    information indicating the switching type of the entity type of the timing mode, the switching type of the entity type of the timing mode indicating switching from the entity type of the first timing mode to the entity type of the second timing mode;

    information indicating the second timing mode;

    Information indicating the configured timing interval.
17. The method according to claim 8 or 16, further comprising:

    Obtain physical signaling or media access layer control unit MAC CE, downlink control information DCI, F1 application protocol F1-AP signaling, RRC information or BAP PDU sent by the parent IAB node or host IAB node;

    Wherein, the MAC CE, downlink control information DCI, F1 application protocol F1-AP signaling, RRC information or BAP PDU carry the first information or information indicating the reference subcarrier spacing SCS of the protection symbol.
18. A device for determining a protection symbol, comprising:

    The first determining module is used to determine the protection symbol information of the IAB node according to the timing mode information;

    Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.
19. The device according to claim 18, wherein the timing mode information includes a link status of the timing mode or an entity type in the timing mode;

    Wherein, the link status of the timing mode includes at least one of the link status of the MT in the timing mode and the link status of the DU in the timing mode;

    The entity type in the timing mode includes at least one of an MT in the timing mode and a DU in the timing mode.
20. The device according to claim 18 or 19, wherein the timing mode corresponding to the timing mode information includes a reference timing mode and a target timing mode, and the target timing mode includes the first timing mode and the second timing mode In at least one of the above, the guard symbol information of the IAB node includes a target number of guard symbols of the IAB node.
21. The apparatus according to claim 20, wherein the first determining module is configured to determine the target number of guard symbols based on at least one of a first number and a second number, the first number being based on the The number of guard symbols determined according to the reference timing mode and the first timing mode, and the second number is the number of guard symbols determined according to the reference timing mode and the second timing mode.
22. The apparatus according to claim 21, wherein the first determining module is configured to perform at least one of the following:

    adding or subtracting the first number and the first preset value to obtain the target number;

    adding or subtracting the second number to a second preset value to obtain the target number;

    adding the first number to the second number to obtain the target number;

    taking the absolute value of the difference between the first number and the second number as the target number;

    taking the maximum value of the first value and the second value as the target number;

    Wherein, the combination of the first value and the second value includes at least one of the following:

    The first value is the first number, and the second value is the value obtained by adding the first number and the first preset value;

    The first value is the first number, and the second value is a value obtained by subtracting the first number from the first preset value;

    The first value is the second number, and the second value is a value obtained by adding the second number and a second preset value;

    The first value is the second number, and the second value is a value obtained by subtracting the second number from a second preset value;

    The first value is 0, and the second value is the absolute value of the difference between the first number and the second number;

    The first value is the first number, and the second value is the second number.
23. The device according to claim 22, wherein the first preset value or the second preset value is determined according to at least one of a preset timing mode and a timing offset value in a target timing mode;

    Alternatively, the first preset value or the second preset value is predefined or preconfigured or configured or indicated.
24. The apparatus according to claim 18 or 19, wherein the timing mode corresponding to the timing mode information includes the first timing mode and the second timing mode, and the protection symbol information of the IAB node includes the protection symbol information of the IAB node. The number of targets for the symbol.
25. Apparatus according to any one of claims 20 to 24, further comprising:

    The second determination module is configured to determine the duration of the guard symbols of the IAB node according to the target number of guard symbols of the IAB node and the reference subcarrier spacing SCS information of the guard symbols.
26. A network device, characterized by comprising a processor, a memory, and a program or instruction stored on the memory and operable on the processor, when the program or instruction is executed by the processor, the Steps in the method for determining the protection symbol described in any one of Claims 1 to 17.
27. A network device, including a processor and a communication interface, wherein the processor is configured to determine protection symbol information of the IAB node according to timing mode information;

    Wherein, the timing mode corresponding to the timing mode information includes at least one of a reference timing mode, a first timing mode and a second timing mode, the first timing mode is the current timing mode of the IAB node, and the second The second timing mode is the target timing mode to be switched by the IAB node.
28. A readable storage medium, on which a program or instruction is stored, and the program or instruction is executed by a processor to implement the steps of the method for determining a protection symbol according to any one of claims 1 to 17.
29. A chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run programs or instructions, and realize the protection symbol according to any one of claims 1 to 17 steps of the determination method.
30. A computer program product, the computer program product is stored in a non-transitory storage medium, and the program product is executed by at least one processor to realize the determination of the protection symbol according to any one of claims 1 to 17 method steps.
31. A network device configured to implement the steps of the method for determining a protection symbol according to any one of claims 1 to 17.

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