WO2022012670A1

WO2022012670A1 - Delay indication method, and configuration method and apparatus

Info

Publication number: WO2022012670A1
Application number: PCT/CN2021/106772
Authority: WO
Inventors: 刘进华
Original assignee: 维沃移动通信有限公司
Priority date: 2020-07-16
Filing date: 2021-07-16
Publication date: 2022-01-20
Also published as: CN113950074A; CN113950074B

Abstract

Disclosed in embodiments of the present application are a delay indication method, and a configuration method and apparatus, capable of solving the problem of being unable to perform delay indication in an IAB network. The method can be applied to an IAB node and comprises: determining whether a data packet carries or needs to carry delay information according to at least one of the following: routing information of the data packet, information of a data radio bearer (DRB) bearing the data packet, information of a radio link control (RLC) channel bearing the data packet, an indication domain in the data packet, and a terminal corresponding to the data packet.

Description

Method, configuration method and device for delay indication

cross reference

This application claims the priority of the Chinese patent application with application number 202010688680.6 filed in China on July 16, 2020 and the invention title is "Method, Configuration Method and Device for Delay Indication", the entire contents of which are incorporated by reference in this application.

technical field

The present application belongs to the field of communication technologies, and in particular relates to a method, a configuration method and an apparatus for delay indication.

Background technique

In the Integrated Access and Backhaul (IAB) network, a data packet sent from the terminal to the Centralized Unit (CU) or sent from the CU to the terminal will undergo multiple wireless transmissions, and each time wireless Transmission will increase the delay of the packet. If the delay experienced by the data packet exceeds the acceptable maximum limit, the requirement of Quality of Service (QoS) cannot be met.

For the IAB network, the related art does not provide a method for indicating the data packet delay. Therefore, how to design a method for indicating the data packet delay in combination with the existing IAB signaling is a technical problem that needs to be solved urgently.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a method, configuration method and device for delay indication, which can solve the problem that delay indication cannot be performed in an IAB network.

In order to solve the above technical problems, the present application is implemented in this way.

A first aspect provides a method for delay indication, which is applied to a self-returning IAB node, including: determining whether a data packet carries or needs to carry delay information according to at least one of the following; routing information of the data packet , the data radio bearer DRB information that carries the data packet, the radio link control RLC channel information that bears the data packet, the indication field in the data packet, and the terminal corresponding to the data packet.

In a second aspect, a method for configuring a delay indication is provided, applied to a communication device, including: sending configuration information, where the configuration information is used to configure an IAB node to determine whether a data packet is carried or needs to be carried according to at least one of the following Delay information; the routing information of the data packet, the DRB information carrying the data packet, the RLC channel information carrying the data packet, the indication field in the data packet, and the terminal corresponding to the data packet.

In a third aspect, a delay indication device is provided, comprising: a determination module configured to determine whether a data packet carries or needs to carry delay information according to at least one of the following; The data radio bearer DRB information of the data packet, the radio link control RLC channel information that bears the data packet, the indication field in the data packet, and the terminal corresponding to the data packet.

In a fourth aspect, a configuration device for delay indication is provided, including: a sending module configured to send configuration information, where the configuration information is used to configure an IAB node to determine whether a data packet carries or needs to carry a delay according to at least one of the following information; the routing information of the data packet, the DRB information carrying the data packet, the RLC channel information carrying the data packet, the indication field in the data packet, and the terminal corresponding to the data packet.

In a fifth aspect, there is provided a communication device comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor When executed, the method as described in the first aspect is realized, or the method as described in the second aspect is realized.

In a sixth aspect, a readable storage medium is provided, on which a program or an instruction is stored, and when the program or instruction is executed by a processor, the method described in the first aspect or the second the method described in the aspect.

In a seventh aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the method according to the first aspect , or implement the method described in the second aspect.

In this embodiment of the present application, the IAB node may determine whether the data packet carries or needs to carry delay information according to at least one of routing information, DRB information, RLC channel information, an indication field, and a terminal corresponding to the data packet, which is convenient for enhancement Delay management of data transmission in IAB network to improve communication effectiveness.

Description of drawings

1 is a block diagram of a wireless communication system according to an embodiment of the present application;

FIG. 2 is a schematic flowchart of a method for delay indication according to an embodiment of the present application;

3 is a schematic diagram of a data packet transmission path according to an embodiment of the present application;

4 is a schematic diagram of a data packet transmission path according to another embodiment of the present application;

5 is a data packet according to an embodiment of the present application indicating that the data packet has delay information through routing information;

6 is a data packet according to an embodiment of the present application indicating that the data packet has delay information through a redefined reserved field;

Fig. 7 is a data packet according to an embodiment of the present application indicating that the data packet has a type of delay information through a redefined reserved field;

8 is a data packet according to an embodiment of the present application indicating that the data packet has delay information and a type of delay information through a redefined reserved field;

FIG. 9 is a schematic diagram of a MAC subheader (subheader) of existence delay information according to an embodiment of the present application;

Figure 10 is a schematic diagram of the presence of delay information MAC subheader according to an embodiment of the present application;

11 is a schematic diagram of the presence of delay information MAC subheader according to an embodiment of the present application;

Figure 12 is a schematic diagram of the presence of delay information MAC subheader according to an embodiment of the present application;

13 is a schematic diagram of the presence of delay information MAC subheader according to an embodiment of the present application;

14 is a schematic diagram of the presence of delay information MAC subheader according to an embodiment of the present application;

Fig. 15 is a schematic flow chart of a method for configuring a delay indication according to an embodiment of the present application;

16 is a schematic structural diagram of an apparatus for delay indication according to an embodiment of the present application;

17 is a schematic structural diagram of an apparatus for configuring a delay indication according to an embodiment of the present application;

18 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 19 is a schematic structural diagram of a network side device according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first", "second" distinguishes Usually it is a class, and the number of objects is not limited. For example, the first object may be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

It is worth noting that the technologies described in the embodiments of this application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-Advanced, LTE-A) systems, 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 (Orthogonal Frequency Division Multiple Access, OFDMA), 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 technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. However, the following description describes a New Radio (NR) system for example purposes, and uses NR terminology in most of the description below, although these techniques are also applicable to applications other than NR system applications, such as 6th generation (6 ^th Generation, 6G) communication system.

FIG. 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes an access device 11 , a network-side device 12 and a terminal 13 . The access device 11 can also be a terminal or an IAB node, and the IAB node can include a mobile terminal (Mobile Termination, MT) functional part and a distributed unit (Distributed Unit, DU) functional part, and the DU can provide network services for other access devices, The MT can be regarded as an ordinary terminal, and has the function of accessing the network side of the ordinary terminal, etc. The terminal mentioned above can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, a super mobile personal computer Computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted equipment (VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable Equipment includes: bracelets, earphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the IAB node. The network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Next Generation Node B (gNB), Home Node B, Home Evolved Node B, WLAN Access point, WiFi node, Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. In the application embodiments, only the base station in the NR system is used as an example, but the specific type of the base station is not limited.

The method, configuration method, and apparatus for delay indication provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in FIG. 2, an embodiment of the present application provides a method 200 for delay indication, and the method can be executed by an Integrated Access and Backhaul (IAB) node. In other words, the method can be installed on an IAB node. software or hardware, the method includes the following steps.

S202: Determine whether the data packet carries or needs to carry delay information according to at least one of the following: routing information of the data packet, data radio bearer (DRB) information carrying the data packet, and a wireless link carrying the data packet Control (Radio Link Control, RLC) channel information, the indication field in the data packet, and the terminal corresponding to the data packet.

The routing information of the data packets mentioned in the various embodiments of this specification may include at least one of the following: a routing identifier, a destination Backhaul Adaptation Protocol (BAP) address, and a path identifier. Above-mentioned routing identification can be routing ID (routing ID); Above-mentioned purpose BAP address (destination BAP address) can be the BAP address of host (donor) IAB node; Above-mentioned path identification can be from the terminal to the data packet between host IAB node through The identifier of the path.

The DRB information that bears the data packet mentioned in the various embodiments of this specification may specifically be the identifier of the DRB that bears the data packet; the RLC channel information that bears the data packet may specifically be the identifier of the RLC channel that bears the data packet, or may be The identifier of the RLC bearer that carries the data packet.

The indication field in the data packet mentioned in the various embodiments of this specification may also be referred to as indication information in the data packet. Specifically, the indication field in the data packet may include indication bits, which may be used to indicate data. Whether the packet carries delay information.

For the terminals corresponding to the data packets mentioned in the various embodiments of this specification, reference may be made to FIG. 3 and FIG. 4 . The data packet in FIG. 3 is a downlink data packet, and the data packet is sent by the host IAB node, passes through the IAB node 1, the IAB node 2 and the IAB node 3 in sequence, and finally reaches the terminal. The data packet in FIG. 4 is an uplink data packet, and the data packet is sent by the terminal, passes through the IAB node 3, the IAB node 2 and the IAB node 1 in sequence, and finally reaches the host IAB node. Therefore, the terminal corresponding to the data packet mentioned in the various embodiments of this specification may be the terminal that initially sends the data packet in FIG. 4 , or the terminal that finally receives the data packet in FIG. 3 . In this implementation manner, the terminal can also report the service information it processes in advance. If the priority corresponding to the service information is high or the delay requirement is high, the host IAB node or base station can configure the data packet corresponding to the terminal to carry or Need to carry delay information.

It should be noted that the multiple IAB nodes shown in FIG. 3 and FIG. 4 include multiple protocol layers. For the same data packet, the data packet may have different names when it reaches different protocol layers during transmission. For example , when it reaches the medium access control (Medium Access Control, MAC) layer, it can be called a MAC data packet or a MAC protocol data unit (Protocol Data Unit, PDU); when it reaches the BAP layer, it can be called a BAP data packet or BAP PDU.

In this embodiment, the behavior performed by the IAB node may be predefined, for example, agreed in a protocol; it may also be configured and implemented by the host IAB node or the base station. In this case, before S202, the IAB node may also receive configuration information, The configuration information is used to configure the IAB node to determine whether the data packet carries or needs to carry delay information according to at least one of the following: routing information of the data packet, DRB information carrying the data packet, carrying the data The RLC channel information of the packet, the indication field in the data packet, and the terminal corresponding to the data packet.

In the method for delay indication provided in this embodiment of the present application, the IAB node can determine whether the data packet carries or needs to carry the delay according to at least one of routing information, DRB information, RLC channel information, an indication field, and a terminal corresponding to the data packet. It is convenient to enhance the delay management of data transmission in the IAB network and improve the communication effectiveness.

Optionally, the data packet mentioned in Embodiment 200 includes a BAP data packet, and the routing information of the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information. In this way, S202 may specifically determine whether the data packet carries or needs to carry delay information according to the routing information of the data packet.

Optionally, the data packet mentioned in Embodiment 200 includes a BAP data packet, and the BAP data packet carries or needs to carry delay information. In an embodiment, the DRB information or RLC channel information carrying the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information. In this way, S202 may specifically determine whether the BAP data packet carries or needs to carry delay information according to the DRB information or RLC channel information carrying the BAP data packet.

Optionally, the data packets mentioned in Embodiment 200 include MAC data packets, and the MAC data packets carry or need to carry delay information. In an embodiment, the DRB information or RLC channel information carrying the MAC data packet is used to indicate that the MAC data packet carries or needs to carry delay information. In this way, S202 may specifically determine whether the MAC data packet carries or needs to carry delay information according to the DRB information or RLC channel information carrying the MAC data packet.

Optionally, the data packets mentioned in Embodiment 200 and subsequent embodiments include a first indication field, where the first indication field may be used to indicate that the data packets carry delay information. In this way, S202 may specifically be to determine whether the data packet carries the delay information according to the first indication field included in the data packet. Specifically, the first indication field may include 1-bit indication information, and the 1-bit indication information is used to indicate whether the data packet carries delay information, for example, 1 indicates that the data packet carries the delay information, and 0 indicates that the data packet does not carry the delay information. Delay information.

Optionally, the data packets mentioned in the foregoing embodiments further include a second indication field, where the second indication field is used to indicate the type of delay information carried in the data packet; wherein the type of the delay information includes at least the following: One: the delay experienced by the data packet, and the remaining delay budget of the data packet. Specifically, the second indication field may include 1-bit indication information, and the 1-bit indication information is used to indicate the type of delay information carried in the data packet, for example, 1 indicates that the delay information is the delay experienced by the data packet, 0 indicates that the delay information is the remaining delay budget of the data packet; or conversely, 0 indicates that the delay information is the delay experienced by the data packet, and 1 indicates that the delay information is the remaining delay budget of the data packet.

Optionally, when the data packet is an uplink data packet, the IAB node that executes S202 is an access IAB node (as shown in Figure 4, the IAB node 3); or the data packet is a downlink data packet, and the IAB node that executes S202 is the host In the case of an IAB node (such as the host IAB node in FIG. 3 ), if it is determined in S202 or the following several embodiments that the data packet needs to carry delay information, the above-mentioned several embodiments may further include the following steps: Determine the delay experienced by the data packet; generate delay information according to the delay experienced by the data packet, and add the generated delay information to the corresponding forwarded data packet.

In this embodiment, for example, the access IAB node evaluates the delay experienced by the data packet (or the remaining delay budget, the same below), and fills the delay into the BAP header of the data packet; in this embodiment, for example, The host IAB node evaluates the queuing delay experienced by the data packet before sending, and fills the delay in the MAC sub-header of the data packet.

Optionally, in the case that the data packet is an uplink or downlink data packet, and the IAB node that executes S202 is an intermediate IAB node (as shown in Figure 3 or Figure 4, IAB node 1 and IAB node 2), if S202 or the following In several embodiments, it is determined that the data packet carries delay information, and the above-mentioned several embodiments may further include the following steps: generating the data packet according to the delay information carried by the data packet and the delay experienced by the data packet at this hop new delay information, and add the new delay information to the data packet.

For the delay experienced by the data packet at this hop, please refer to the delay 1 to the delay 6 shown in Figure 3 and Figure 4 . In an example, the IAB node performing S202 is the IAB node 2, and the delay experienced by the data packet at this hop may be the delay 3 shown in FIG. 3 or the delay 5 shown in FIG. 4 .

In embodiment 200, if the data packet is an uplink data packet, the IAB node performing S202 is an intermediate IAB node, the next hop of the data packet is a host IAB node, and the method further includes the step of: canceling the data The delay information in the packet is added or the delay information in the data packet is deleted, and this embodiment can save signaling overhead, for example, save the size overhead of the packet header of the data packet.

Optionally, in each of the foregoing embodiments, in the case that the data packet carries delay information, the method further includes the steps of: adjusting the resource allocation priority of the data packet according to the delay information; or The delay information is discarded, and the data packet is discarded.

In this embodiment, for example, the IAB node determines that the data packet is about to time out according to the delay information (which may be the remaining delay budget or the total delay experienced, the same below) carried in the data packet, and then the resource allocation priority of the data packet can be increased. , so that the packet is transmitted as soon as possible. In this embodiment, for another example, the IAB node determines that the data packet has timed out according to the delay information carried in the data packet, and can directly discard the data packet to avoid subsequent invalid transmission and reduce resource overhead.

Optionally, for the data packets mentioned in the foregoing embodiments, in the case that the data packets carry or need to carry delay information: the data packets include BAP data packets, and the delay information is in the BAP data packets. and/or the data packet includes a MAC data packet, and the delay information is transmitted in the sub-packet header of the MAC data packet.

In order to describe in detail the methods for delay indication provided by various embodiments of the present application, the following will be described with reference to several specific embodiments.

Example 1

The first embodiment can be divided into two sub-embodiments, method 1 and method 2.

Method 1: Configure the delay indication according to the route ID, destination BAP address, path ID or backhaul logical channel ID (BH RLC channel ID).

This method 1 can be configured according to routing ID (routing ID), destination BAP address (destination BAP address) or path ID (path ID) or BH RLC channel ID to configure whether to perform delay indication and the format of the corresponding delay information, here are Two optional ways:

Mode 1: Whether the BAP packet header indicated by the routing information contains delay information.

In this embodiment, the centralized unit (Centralized Unit, CU) of the host IAB node can be configured through F1-AP signaling or Radio Resource Control (Radio Resource Control, RRC) signaling, and the IAB node is configured by routing ID (routing ID). ), destination BAP address (destination BAP address) or path ID (path ID) configuration for delay indication (or delay information), including generating delay indication and placing it in BAP data packets and receiving BAP data packets from read delay indication.

For the transmission of uplink data, after the access IAB node (access IAB node) determines the routing ID (or destination BAP address, path ID) for the data packet, if the packet delay indication has been configured for the routing ID, the access IAB node The incoming IAB node evaluates the delay experienced by the data packet (or the remaining delay budget, the same below), and fills the delay into the BAP header of the data packet;

For downlink data, after the host IAB node (IAB donor) determines the routing ID (or destination BAP address, path ID) for the data, if a packet delay indication has been configured for the routing ID, the host IAB node evaluates the data The delay experienced by the packet, and the delay is filled into the packet header of the BAP data packet of the data packet.

For the intermediate IAB node, after receiving the BAP data packet, according to the routing ID (or destination BAP address, path ID) in the packet header, it is determined whether the BAP header of the data packet carries the delay of the packet When forwarding the data packet, according to the received delay information and the delay experienced by the data packet at this hop, new delay information is generated to replace the delay indication information in the original packet header.

For the BAP data packet format that can be used in this embodiment, see Format 1 or Format 3 in Embodiment 4 below.

Mode 2: Whether the subheader (subheader) of the MAC data packet indicated by the BH RLC channel ID contains delay information.

For uplink data transmission, after the access IAB node determines the BH RLC channel for the data packet, if the packet delay indication has been configured for the BH RLC channel, the access IAB node evaluates the delay experienced by the data packet. time (or the remaining delay budget, the same below), and fill the delay into the MAC subheader of the data packet.

For downlink data, after the host IAB node (IAB donor) selects the BH RLC channel for the data, if the packet delay indication has been configured for the BH RLC channel, the access IAB node evaluates the data packet before sending it. The queuing delay is filled in the MAC subheader header of the data packet.

For the intermediate IAB node, after receiving the MAC PDU, determine the MAC data according to the logical channel identifier LCID (or destination BAP address, path ID) of the input RLC channel (ingress RLC channel) in the MAC subheader Whether the subheader of the packet carries the delay information of the data packet. When forwarding the data packet, new delay information is generated according to the received delay information and the delay experienced by the data packet at this hop. When the data generates a MAC PDU, the generated delay information is filled in the MAC subheader of the MAC PDU.

For the BAP data packet format that can be used in this embodiment, see Format 5 of Embodiment 4.

Embodiment 2: The delay indication is configured according to the UE DRB or UE RLC channel.

In this embodiment, the configuration of the delay indication information is performed according to the UE DRB or the UE RLC channel, that is, whether the CU configures through the RRC/F1-AP is the delay information sent by the DRB or the RLC channel of a UE.

In this embodiment, when the access IAB node sends an uplink data packet, it is determined whether the corresponding BAP header or MAC subheader needs to carry delay indication information according to the DRB/RLC channel that carries the data packet. If a packet delay indication has been configured for the DRB/RLC channel, the access IAB node evaluates the delay experienced by the data packet (or the remaining delay budget, the same below), and fills the delay into the in the MAC subheader of the packet.

When the host IAB node sends a downlink data packet, it determines whether the corresponding BAP header or MAC subheader carries delay indication information according to the DRB/RLC channel that carries the data packet. If a packet delay indication has been configured for the DRB/RLC channel, the access IAB node evaluates the queuing delay experienced by the data packet before sending, and fills the delay into the MAC sub-header of the data packet in the header.

The intermediate IAB node reads the delay indication information from the BAP or MAC subheader according to the indication information of whether the delay indication exists in the BAP header or the MAC subheader, and if the delay indication exists, the intermediate IAB node reads the delay indication information from the BAP or MAC subheader, and when forwarding the packet, generates The new delay indication information is filled in the corresponding BAP header or MAC subheader of the corresponding forwarded data packet.

In particular, in order to prevent the intermediate IAB node from reading the UE DRB or UE RLC information in the received data packet, the BAP packet header can be used to indicate the delay information. When the access IAB node or IAB donor determines that the BAP data packet carries the data of a UE's DRB or RLC channel, and needs to carry delay indication information for the data or RLC PDU carried by the UE DRB, redefine the R bit in the BAP packet header, to indicate whether the corresponding BAP header carries delay information (for example, R=1, indicating that there is delay information). When the intermediate IAB node receives the BAP data packet, if the redefined R=1, it reads the delay information, and when forwarding the packet, according to the delay read from the packet and the newly experienced delay, Generate new delay indication information and fill in the header of the BAP data packet forwarding the BAP data. For details, refer to Format 2 or Format 4 in Embodiment 4.

Optionally (applicable to Embodiment 1 and Embodiment 2), when the IAB node forwards the data packet to the next IAB node which is the host IAB node, regardless of whether the received data packet carries delay information, the IAB node may not be Delay information is indicated in the packet header to save position overhead.

Embodiment 3

The third embodiment mainly introduces the type of configuration delay information. This embodiment may be combined with

Embodiments

1, 2 and 4, and the delay information may be configured to indicate the delay experienced by the data packet or the remaining available delay budget. For examples of the BAP format, see

formats

3 and 4 in the fourth embodiment. Format 4 can be used for the delay indication in various situations in the first and second embodiments.

Embodiment 4: Format of data packet transmission delay.

Format 1: A routing (routing) ID, destination BAP address or path (path) ID BAP data packet contains delay information, the delay information can be shown in the last byte in Figure 5, that is, Figure 5 The content indicated by byte 4 (oct4) in 5.

Format 2: Redefine the R bit in the BAP header to indicate whether the BAP header contains delay information. R=1 indicates that delay information exists, and R=0 indicates that delay information exists. Specifically, as shown in Figure 6, the first R field redefined in Figure 6 is equal to 1, indicating that the header of the BAP data packet contains delay information. For details of the delay information, refer to the last byte in FIG. 6 , that is, the content shown in oct4 in FIG. 6 .

Format 3: Redefine an R bit in the BAP header to indicate the type of delay information in the BAP header. Specifically, for example, R=0/1 indicates that there is an experienced delay/remaining delay budget, respectively, or R=0/1 indicates that there is a remaining delay budget/experienced delay, respectively. Specifically, as shown in FIG. 7 , the first R field redefined in FIG. 7 is equal to 1, indicating that the type of delay information contained in the header of the BAP data packet may be the remaining delay budget. For details of the delay information, refer to the last byte in FIG. 7 , that is, the content shown in oct4 in FIG. 7 .

Format 4: Redefine one or more R bits in the BAP packet header, and at the same time indicate whether there is delay information in the BAP packet header, and at the same time indicate the type of delay information.

Referring specifically to FIG. 8 , R1 and R2 in FIG. 8 can be used to indicate whether there is delay information and the type of delay information, respectively.

In FIG. 8, R1=1/0, which can be used to indicate the presence/absence of delay information, respectively.

In FIG. 8 , R2=0/1, which can respectively indicate that there is an experienced delay/remaining delay budget, or that there is a remaining delay budget/experienced delay, respectively.

Format 5: When the delay information is indicated in the MAC subheader, an example of the MAC subheader containing the delay information is shown in Figures 9 to 14. The L field in FIGS. 9 to 14 can be used to indicate the length of the following data.

The method for indicating a delay according to an embodiment of the present application has been described in detail above with reference to FIG. 2 to FIG. 14 . A method for configuring a delay indication according to another embodiment of the present application will be described in detail below with reference to FIG. 15 . It can be understood that, this embodiment is the same as some descriptions in the methods shown in FIGS. 2 to 14 , and to avoid repetition, relevant descriptions are appropriately omitted.

A method for configuring a delay indication according to another embodiment of the present application will be described in detail below with reference to FIG. 15 . It can be understood that, this embodiment is the same as some descriptions in the methods shown in FIGS. 2 to 14 , and to avoid repetition, relevant descriptions are appropriately omitted.

FIG. 15 is a schematic diagram of an implementation flowchart of a method for configuring a delay indication according to an embodiment of the present application, which can be applied to network-side devices such as a host IAB node or a base station. As shown in Figure 15, the method 1500 includes the following steps.

S1502: Send configuration information, where the configuration information is used to configure the IAB node to determine whether the data packet carries or needs to carry delay information according to at least one of the following: routing information of the data packet, DRB information of the carrying data packet, RLC channel information, the indication field in the data packet, and the terminal corresponding to the data packet.

In this embodiment of the present application, the host IAB node or base station sends configuration information, and the configuration information is used to configure the IAB node according to at least one of routing information, DRB information, RLC channel information, an indication field, and a terminal corresponding to a data packet. Determining whether the data packet carries or needs to carry delay information is convenient for enhancing the delay management of data transmission in the IAB network and improving the communication effectiveness.

Optionally, as an embodiment, the data packet includes a BAP data packet, and routing information of the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information.

Optionally, as an embodiment, the data packet includes a BAP data packet, and the BAP data packet carries or needs to carry delay information; or the data packet includes a MAC data packet, and the MAC data packet carries or needs to be carried Delay information.

Optionally, as an embodiment, the data packet includes a first indication field, where the first indication field is used to indicate that the data packet carries delay information.

Optionally, as an embodiment, the data packet further includes a second indication field, where the second indication field is used to indicate the type of the delay information; wherein the type of the delay information includes at least one of the following One: the delay experienced by the data packet and the remaining delay budget of the data packet.

Optionally, as an embodiment, in the case that the data packet carries or needs to carry delay information: the data packet includes a BAP data packet, and the delay information is transmitted in the header of the BAP data packet; And/or the data packet includes a MAC data packet, and the delay information is transmitted in a sub-packet of the MAC data packet.

FIG. 16 is a schematic structural diagram of an apparatus for delay indication according to an embodiment of the present application, and the apparatus may correspond to an IAB node in other embodiments. As shown in Figure 16, apparatus 1600 includes:

The determining module 1602 can be configured to determine whether the data packet carries or needs to carry delay information according to at least one of the following: the routing information of the data packet, the data radio bearer DRB information carrying the data packet, the data carrying the data The radio link control RLC channel information of the packet, the indication field in the data packet, and the terminal corresponding to the data packet.

Optionally, as an embodiment, the data packet includes a backhaul adaptation protocol BAP data packet, and the routing information of the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information.

Optionally, as an embodiment, the routing information of the data packet includes at least one of the following: a routing identifier, a destination BAP address, and a path identifier.

Optionally, as an embodiment, the data packet includes a BAP data packet, and the BAP data packet carries or needs to carry delay information; or the data packet includes a media access control MAC data packet, and the MAC data packet Carry or need to carry delay information.

Optionally, as an embodiment, when it is determined that the data packet needs to carry delay information, the determining module 1602 is further configured to: determine the delay experienced by the data packet; Delay generating delay information, and adding the generated delay information to the corresponding forwarded data packet; wherein, the data packet is an uplink data packet, and the IAB node is an access IAB node; or the The data packets are downlink data packets, and the IAB node is the host IAB node.

Optionally, as an embodiment, in the case of determining that the data packet carries delay information, the determining module 1602 is further configured to: according to the delay information carried in the data packet and the data packet at this hop The experienced delay generates new delay information, and adds the new delay information to the data packet; wherein, the IAB node is an intermediate IAB node.

Optionally, as an embodiment, the determining module 1602 is further configured to: cancel adding delay information in the data packet or delete the delay information in the data packet; wherein the data packet is uplink data packet, the IAB node is an intermediate IAB node, and the next hop of the data packet is the host IAB node.

Optionally, as an embodiment, when the data packet carries delay information, the determining module 1602 is further configured to: adjust the resource allocation priority of the data packet according to the delay information; or According to the delay information, the data packet is discarded.

Optionally, as an embodiment, the apparatus 1600 further includes: a receiving module, configured to receive configuration information, where the configuration information is used to configure the IAB node to determine whether the data packet carries or Whether it is necessary to carry delay information; the routing information of the data packet, the DRB information carrying the data packet, the RLC channel information carrying the data packet, the indication field in the data packet, the terminal corresponding to the data packet .

The apparatus 1600 according to the embodiment of the present application may refer to the process of the method 200 corresponding to the embodiment of the present application, and each unit/module and the above-mentioned other operations and/or functions in the apparatus 1600 are respectively in order to implement the corresponding process in the method 200, And can achieve the same or equivalent technical effects, for the sake of brevity, details are not repeated here.

FIG. 17 is a schematic structural diagram of an apparatus for delay indication according to an embodiment of the present application, and the apparatus may correspond to a network side device such as a host IAB node or a base station in other embodiments. As shown in FIG. 17, apparatus 1700 includes:

The sending module 1702 can be configured to send configuration information, where the configuration information is used to configure the IAB node to determine whether the data packet carries or needs to carry delay information according to at least one of the following; DRB information of the data packet, RLC channel information carrying the data packet, an indication field in the data packet, and a terminal corresponding to the data packet.

In the embodiment of the present application, the host IAB node or base station sends configuration information, and the configuration information is used to configure the IAB node according to at least one of routing information, DRB information, RLC channel information, indication field, and the terminal corresponding to the data packet. Determining whether the data packet carries or needs to carry delay information is convenient for enhancing the delay management of data transmission in the IAB network and improving the communication effectiveness.

The apparatus 1700 according to the embodiment of the present application may refer to the process of the method 1500 corresponding to the embodiment of the present application, and each unit/module and the above-mentioned other operations and/or functions in the apparatus 1700 are respectively in order to implement the corresponding process in the method 1500, And can achieve the same or equivalent technical effects, for the sake of brevity, details are not repeated here.

Optionally, as shown in FIG. 18 , an embodiment of the present application further provides a communication device 1800, including a processor 1801, a memory 1802, a program or instruction stored in the memory 1802 and executable on the processor 1801, For example, when the communication device 1800 is a network-side device such as an IAB node, a host IAB node, etc., when the program or instruction is executed by the processor 1801, the above-mentioned method for delay indication and each process of the configuration method are implemented, and can achieve the same The technical effect, in order to avoid repetition, will not be repeated here.

Specifically, an embodiment of the present application further provides a network side device. As shown in FIG. 19 , the network device 1900 includes: an antenna 191 , a radio frequency device 192 , and a baseband device 193 . The antenna 191 is connected to the radio frequency device 192 . In the uplink direction, the radio frequency device 192 receives information through the antenna 191, and sends the received information to the baseband device 193 for processing. In the downlink direction, the baseband device 193 processes the information to be sent and sends it to the radio frequency device 192 , and the radio frequency device 192 processes the received information and sends it out through the antenna 191 .

The above-mentioned frequency band processing apparatus may be located in the baseband apparatus 193 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 193 . The baseband apparatus 193 includes a processor 194 and a memory 195 .

The baseband device 193 may include, for example, at least one baseband board on which a plurality of chips are disposed, as shown in FIG. 19 , one of the chips is, for example, the processor 194 , which is connected to the memory 195 to call a program in the memory 195 to execute The network devices shown in the above method embodiments operate.

The baseband device 193 may further include a network interface 196 for exchanging information with the radio frequency device 192, and the interface is, for example, a common public radio interface (CPRI for short).

Specifically, the network-side device in this embodiment of the present invention further includes: an instruction or program stored in the memory 195 and executable on the processor 194 , and the processor 194 invokes the instruction or program in the memory 195 to execute the instructions or programs shown in FIGS. 16 to 17 . In order to avoid repetition, it is not repeated here.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the above-mentioned method for delay indication and configuration method is implemented , and can achieve the same technical effect, in order to avoid repetition, it is not repeated here.

The processor may be the processor in the terminal described 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, and the like.

An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used for running a program or an instruction to implement the above method for delay indication, The various processes of the configuration method embodiments can achieve the same technical effect, and are not repeated here to avoid repetition.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in the reverse order depending on the functions involved. To perform functions, 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 some examples may be combined in other examples.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this 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 embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

A method for delay indication, which is applied to self-returning IAB nodes, including:

Determine whether the data packet carries or needs to carry delay information according to at least one of the following:

The routing information of the data packet, the data radio bearer DRB information carrying the data packet, the radio link control RLC channel information carrying the data packet, the indication field in the data packet, and the terminal corresponding to the data packet .
The method of claim 1, wherein,

The data packet includes a backhaul adaptation protocol BAP data packet, and the routing information of the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information.
The method according to claim 2, wherein the routing information of the data packet includes at least one of the following:

Route ID, destination BAP address, and path ID.
The method of claim 1, wherein,

The data packet includes a BAP data packet, and the BAP data packet carries or needs to carry delay information; or

The data packet includes a medium access control MAC data packet, and the MAC data packet carries or needs to carry delay information.
The method according to any one of claims 1 to 4, wherein the data packet includes a first indication field, and the first indication field is used to indicate that the data packet carries delay information.
The method according to claim 5, wherein the data packet further comprises a second indication field, the second indication field is used to indicate the type of the delay information;

The type of the delay information includes at least one of the following: the delay experienced by the data packet and the remaining delay budget of the data packet.
The method according to claim 1, wherein, when it is determined that the data packet needs to carry delay information, the method further comprises:

determining the delay experienced by the data packet;

Generate delay information according to the delay experienced by the data packet, and add the generated delay information to the corresponding forwarded data packet;

Wherein, the data packet is an uplink data packet, and the IAB node is an access IAB node; or the data packet is a downlink data packet, and the IAB node is a host IAB node.
The method according to claim 1, wherein, when it is determined that the data packet carries delay information, the method further comprises:

Generate new delay information according to the delay information carried by the data packet and the delay experienced by the data packet at this hop, and add the new delay information to the data packet;

Wherein, the IAB node is an intermediate IAB node.
The method of claim 1, wherein the method further comprises:

cancel adding delay information in the data packet or delete the delay information in the data packet;

The data packet is an uplink data packet, the IAB node is an intermediate IAB node, and the next hop of the data packet is a host IAB node.
The method according to claim 1, wherein, in the case that the data packet carries delay information, the method further comprises:

adjusting the resource allocation priority of the data packet according to the delay information; or

According to the delay information, the data packet is discarded.
The method of claim 1, wherein the method further comprises:

Receive configuration information, where the configuration information is used to configure the IAB node to determine whether the data packet carries or needs to carry delay information according to at least one of the following;

The routing information of the data packet, the DRB information carrying the data packet, the RLC channel information carrying the data packet, the indication field in the data packet, and the terminal corresponding to the data packet.
The method according to claim 1, wherein, in the case that the data packet carries or needs to carry delay information:

The data packet includes a BAP data packet, and the delay information is transmitted in the header of the BAP data packet; and/or

The data packet includes a MAC data packet, and the delay information is transmitted in a sub-packet of the MAC data packet.
A method for configuring a delay indication, applied to a communication device, includes:

Sending configuration information, where the configuration information is used to configure the IAB node to determine whether the data packet carries or needs to carry delay information according to at least one of the following;

The routing information of the data packet, the DRB information carrying the data packet, the RLC channel information carrying the data packet, the indication field in the data packet, and the terminal corresponding to the data packet.
The method of claim 13, wherein,

The data packet includes a BAP data packet, and the routing information of the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information.
The method of claim 13, wherein,

The data packet includes a BAP data packet, and the BAP data packet carries or needs to carry delay information; or

The data packets include MAC data packets, and the MAC data packets carry or need to carry delay information.
The method according to any one of claims 13 to 15, wherein the data packet includes a first indication field, and the first indication field is used to indicate that the data packet carries delay information.
The method according to claim 16, wherein the data packet further comprises a second indication field, the second indication field is used to indicate the type of the delay information;

The type of the delay information includes at least one of the following: the delay experienced by the data packet and the remaining delay budget of the data packet.
The method according to claim 13, wherein, in the case that the data packet carries or needs to carry delay information:

The data packet includes a BAP data packet, and the delay information is transmitted in the header of the BAP data packet; and/or

The data packet includes a MAC data packet, and the delay information is transmitted in a sub-packet of the MAC data packet.
A device for delay indication, comprising:

A determining module, configured to determine whether the data packet carries or needs to carry delay information according to at least one of the following;

The routing information of the data packet, the data radio bearer DRB information carrying the data packet, the radio link control RLC channel information carrying the data packet, the indication field in the data packet, and the terminal corresponding to the data packet .
The apparatus of claim 19, wherein,

The data packet includes a BAP data packet, and the routing information of the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information.
The apparatus of claim 19, wherein,

The data packet includes a BAP data packet, and the BAP data packet carries or needs to carry delay information; or

The data packets include MAC data packets, and the MAC data packets carry or need to carry delay information.
The apparatus according to any one of claims 19 to 21, wherein the data packet includes a first indication field, and the first indication field is used to indicate that the data packet carries delay information.
The apparatus according to claim 22, wherein the data packet further comprises a second indication field, the second indication field is used to indicate the type of the delay information;

The type of the delay information includes at least one of the following: the delay experienced by the data packet and the remaining delay budget of the data packet.
The apparatus according to claim 19, wherein, in the case that the data packet carries or needs to carry delay information:

The data packet includes a BAP data packet, and the delay information is transmitted in the header of the BAP data packet; and/or

The data packet includes a MAC data packet, and the delay information is transmitted in a sub-packet of the MAC data packet.
A configuration device for delay indication, comprising:

a sending module, configured to send configuration information, where the configuration information is used to configure the IAB node to determine whether the data packet carries or needs to carry delay information according to at least one of the following;

The routing information of the data packet, the DRB information carrying the data packet, the RLC channel information carrying the data packet, the indication field in the data packet, and the terminal corresponding to the data packet.
The apparatus of claim 25, wherein,

The data packet includes a BAP data packet, and the routing information of the BAP data packet is used to indicate that the BAP data packet carries or needs to carry delay information.
The apparatus of claim 25, wherein,

The data packet includes a BAP data packet, and the BAP data packet carries or needs to carry delay information; or

The data packets include MAC data packets, and the MAC data packets carry or need to carry delay information.
The apparatus according to any one of claims 25 to 27, wherein the data packet includes a first indication field, and the first indication field is used to indicate that the data packet carries delay information.
The apparatus according to claim 28, wherein the data packet further comprises a second indication field, the second indication field is used to indicate the type of the delay information;

The type of the delay information includes at least one of the following: the delay experienced by the data packet and the remaining delay budget of the data packet.
The apparatus according to claim 25, wherein, in the case that the data packet carries or needs to carry delay information:

The data packet includes a BAP data packet, and the delay information is transmitted in the header of the BAP data packet; and/or

The data packet includes a MAC data packet, and the delay information is transmitted in a sub-packet of the MAC data packet.
A communication device comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor to achieve as claimed in claims 1 to 18 The method of any one.
A readable storage medium on which programs or instructions are stored, and when the programs or instructions are executed by the processor, the method according to any one of claims 1 to 18 is implemented.
A chip, the chip comprising a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used for running programs or instructions to implement the method according to any one of claims 1 to 18 .