CN115087033A - Network coding processing method and device, communication equipment and readable storage medium - Google Patents

Network coding processing method and device, communication equipment and readable storage medium Download PDF

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CN115087033A
CN115087033A CN202110283159.9A CN202110283159A CN115087033A CN 115087033 A CN115087033 A CN 115087033A CN 202110283159 A CN202110283159 A CN 202110283159A CN 115087033 A CN115087033 A CN 115087033A
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network coding
communication device
coding function
packet
data
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文鸣
刘进华
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The application discloses a network coding processing method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication. The network coding processing method comprises the following steps: the first communication equipment receives first indication information; the first communication equipment executes a first operation according to the indication of the first indication information, wherein the first operation comprises at least one of the following operations: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device. The method and the device can realize flexible adjustment of the state of the network coding function corresponding to the first communication equipment, thereby improving the reliability of data transmission.

Description

Network coding processing method and device, communication equipment and readable storage medium
Technical Field
The present application belongs to the field of communication technologies, and in particular, to a network coding processing method, apparatus, communication device, and readable storage medium.
Background
In an Integrated Access and Backhaul (IAB) system, data undergoes multi-hop wireless transmission between an IAB donor-Distributed Unit (IAB donor-DU) of a host IAB and a terminal. In the existing IAB network, Radio Link Control (RLC) retransmission is limited to two nodes of a Backhaul Link (BH Link) only, and automatic retransmission of higher-layer protocol retransmission between an IAB node-Centralized Unit (IAB node-CU) of a host IAB and a UE is not implemented, which results in that the robustness of data transmission of the IAB network is weaker than that of a case of only one-hop wireless transmission. Through network coding, the robustness of data transmission of the IAB network can be enhanced.
However, network coding may bring extra redundancy for data transmission, that is, the data amount after network coding may be slightly larger than the data amount before network coding, so that when the data carrying capacity of the transmission path is weak, such as congestion occurs, the congestion degree of the transmission path may be increased, and data loss may be aggravated.
Disclosure of Invention
Embodiments of the present application provide a network coding processing method and apparatus, a communication device, and a readable storage medium, which can solve the problem that data loss is aggravated due to data transmission redundancy caused by extra network coding after network coding is introduced in an IAB network.
In a first aspect, a network coding processing method is provided, including:
the first communication equipment receives first indication information;
the first communication equipment executes a first operation according to the indication of the first indication information, wherein the first operation comprises at least one of the following operations: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device.
In a second aspect, a network coding processing apparatus is provided, including:
the first receiving module is used for receiving the first indication information by the first communication equipment;
a first operation module, configured to, by the first communication device, perform a first operation according to the indication of the first indication information, where the first operation includes at least one of: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device.
In a third aspect, there is provided a communication device, the terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the first aspect.
In a fourth aspect, a readable storage medium is provided, on which a program or instructions are stored, which when executed by a processor, implement the steps of the method according to the first aspect.
In a fifth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a network-side device program or instruction to implement the method according to the first aspect.
In this embodiment, the first communication device may perform, according to the received indication of the first indication information, a first operation according to the indication of the first indication information, where the first operation includes at least one of: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device. In this way, the state of the network coding function corresponding to the first communication device can be flexibly adjusted, and thus, the reliability of data transmission can be improved.
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Fig. 1a is a schematic diagram of an application of network coding provided in an embodiment of the present application;
fig. 1b is a second schematic diagram illustrating an application of network coding according to an embodiment of the present application;
fig. 1c is a third schematic diagram of an application of network coding according to an embodiment of the present application;
fig. 2 is a flowchart of a network coding processing method provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a wireless communication system provided by an embodiment of the present application;
fig. 4a is a schematic diagram of a wireless communication system according to an embodiment of the present application;
fig. 4b is a schematic diagram of a wireless communication system provided in an embodiment of the present application;
fig. 5 is a second schematic diagram of a wireless communication system according to an embodiment of the present application;
fig. 6 is a block diagram of a network coding processing apparatus according to an embodiment of the present application;
fig. 7 is a block diagram of a communication 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 drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as 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 (SC-FDMA), and other systems. This applicationThe terms "system" and "network" in the embodiments are often used interchangeably, and the described techniques may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, and the techniques may also be applied to applications other than NR system applications, such as 6 th generation (6 th generation) NR systems th Generation, 6G) communication system.
For convenience of understanding, some contents related to the embodiments of the present application are described below:
first, network coding overview.
When an original Data block (Source Data Packet) is subjected to network coding, a sending end needs to perform three steps of 'original Data block segmentation', 'encoding matrix generation' and 'encoding', and a receiving end needs to perform 'decoding'. Network coding has the characteristics of: (1) the transmitting end divides an original data block into a plurality of (K) sub-blocks and then encodes the sub-blocks to generate a plurality of (N, N > ═ K) encoded sub-blocks. (2) The transmitting end transmits the N coding sub-blocks to the receiving end, and the receiving end can successfully recover the original data block based on the received X (K ═ X ═ N) coding sub-blocks. Based on the characteristics of network coding, a receiving end has no prejudice to the received coded packet, and can successfully decode the coded packet only when a matrix formed by vectors implicitly or explicitly contained in the received coded packet meets the condition of full rank of a row. The transmission is encoded through the network, so that in the case that some encoded sub-blocks are lost, the receiving end can still recover the original data based on the received encoded sub-blocks.
In an Integrated Access and Backhaul (IAB) system, data undergoes multi-hop wireless transmission between an IAB donor-Distributed Unit (IAB donor-DU) of a host IAB and a terminal (hereinafter, referred to as User Equipment (UE)), and due to a delay, in an existing IAB network, RLC retransmission is limited to only two nodes of a Backhaul (BH) link, and automatic retransmission of a higher layer protocol retransmission between an IAB donor-Distributed Unit (IAB-donor-CU) of the host IAB and the UE is not implemented, which results in that the robustness of data transmission of the IAB network is weaker than that of a case of only one-hop wireless transmission.
Through network coding, the robustness of data transmission can be enhanced, and a transmitting end and a receiving end do not need additional feedback information and are not influenced by a network topological structure. Compared with the traditional robustness enhancing methods such as Packet Data Convergence Protocol (PDCP) repetition (duplication), the method has no requirement on the network structure and can realize the relative reduction of the equivalent redundancy code rate.
And II, encoding and decoding profiles of network coding.
Step one, a sending end divides an original data block.
The original Data block P may be divided equally into K original Data sub-blocks (Source Data segments). P can be represented as:
P＝[p 1 p 2 ... p K ]
wherein p is k Which represents the kth original data subblock resulting from dividing the original data block p. p is a radical of k Each element in (1) belongs to GF (2), which is a Galois Field (Galois Field), GF (2) being the simplest finite Field. That is, p k Each element in the data is only valued in 0 and 1, and the result obtained by operation is only 0 and 1, which is equivalent to only exclusive or and multiplication.
It should be noted that, in practical applications, if the data length of the last original data sub-block is not enough, a 0 complementing mode may be adopted, so that the data length of the last original data sub-block is equal to the data lengths of other original data sub-blocks. For example, assuming that the original data block is 0100100 and K takes a value of 4, then:
P＝[01 00 10 00]
and step two, the sending end generates a coding matrix.
The coding matrix is as follows:
Figure BDA0002979370070000051
it can be seen that the coding matrix M includes K rows and N columns of elements, where K is the number of original data sub-blocks obtained by equally dividing the original data block, and N is the number of coding sub-blocks obtained by coding the K original data sub-blocks. It is to be understood that i in the encoding matrix M is a positive integer less than or equal to K and j is a positive integer less than or equal to N. In addition, for a column of elements in the coding matrix M, it may be referred to as a column vector in the coding matrix M.
Defining the sum of the elements in each column vector in the coding matrix M as a degree of freedom d, and the formula is:
Figure BDA0002979370070000061
since each column vector in the coding matrix M includes K elements, and each element in the coding matrix is only valued in 0 and 1, the degree of freedom of each column vector in the coding matrix M is greater than or equal to 0 and less than or equal to K. It should be understood that the degrees of freedom for different columns may be equal in value or different.
The degree of freedom d follows a certain distribution which is related to K.
The jth column vector in the coding matrix M (i.e., the jth column vector from left to right in the coding matrix M) can be generated as follows:
determining the degree of freedom d of the jth column vector according to the distribution of the degree of freedom j ；
Randomly selecting d from jth column vector j The value of each element is 1, and the value of the other elements is 0.
And step three, the sending end encodes the original data block P to generate N encoded sub-blocks.
C＝PM＝[c 1 c 2 ... c N ]
Wherein, c N Is the nth of the N encoded sub-blocks.
And step four, the receiving end decodes the received coding sub-blocks to recover the original data blocks.
Both the transmitting and receiving ends need to have the original data sub-block number (i.e. the jth column vector in the coding matrix M corresponding to the jth coding sub-block) needed for generating the coding sub-block. The receiving end combines the column vectors corresponding to the received encoded sub-blocks into a matrix H, and when H satisfies the condition of full rank (H) ═ K), it means that the currently received encoded sub-blocks are enough to recover the original data block P.
Taking out the column vectors forming the full rank of the row and the corresponding coding sub-blocks in the matrix H to form a new coding matrix H 'and a new coding sub-block vector C', so that the original data can be obtained as follows:
[p 1 p 2 ... P K ]＝C′H′ -1
and combining the obtained original data sub-blocks in sequence, namely completely recovering to obtain an original data block P.
The network coding is used for redundant transmission to improve the reliability of transmission and further improve the transmission delay, the required redundancy is different under different conditions, but generally, the required redundancy is obviously less than 100%.
And thirdly, an application mode of network coding in the IAB network.
1) The network coding can be applied to a relay loop of an IAB network, and can divide an Internet Protocol (IP) packet (packets) into subblocks and perform network coding, then send the coded subblocks to a target receiving IAB node through a return channel, perform network decoding after the target receiving IAB node receives the coded subblocks, recover the IP packets, and send data to UE through a DU part of the node. As shown in fig. 1a, network coding and decoding are performed between a host IAB (IAB donor) of the IAB network and an access IAB to enhance reliability of relay loop data transmission of the IAB network, and both uplink and downlink data can be sent through network coding.
The network coding can also be implemented in a wireless communication Protocol stack, and can perform network coding on a PDCP Protocol Data Unit (PDU), send the coded sub-block to a receiving end, and perform network decoding at the receiving end to recover the PDCP PDU. As shown in fig. 1b, network coding and decoding are performed between the IAB donor of the IAB network and the UE to enhance the reliability of data transmission of the entire radio channel in the IAB network, and both uplink and downlink data can be transmitted through network coding.
Network coding may also be implemented in Dual Connectivity (DC), as shown in fig. 1c, and may be performed by a CU network coding, where part of the coded sub-blocks of an original data block are transmitted through one connection and another part of the coded sub-blocks are transmitted through another connection to achieve multiple sets of transmission gain.
In the IAB network, the transmission path may include a host IAB and an access IAB (access IAB), and further may include an intermediate IAB. The host IAB in the transmission path includes a CU and a DU, and the other IABs include a Mobile Terminal (MT) and a DU. As shown in fig. 1a and 1b, the transmission path includes a host IAB, an intermediate IAB, i.e., IAB1, and an access IAB, i.e., IAB 2.
And fourthly, a method for routing data in the IAB network.
One of the functions of the Backhaul Adaptive Protocol (BAP) layer is to select a corresponding BAP address (BAP address) and a BAP transmission path identifier (BAP path ID) for data arriving at an upper layer, and route the data for data transmitted to the node in the previous hop. Wherein, BAP address is the BAP address of the destination node to which the data packet needs to arrive, BAP path ID is the path that the data packet needs to pass through, and these two fields will be written into the BAP header (header) of the data packet. When the data packet is transmitted to the next hop node, the next hop IAB node will route the data according to the information in the BAP header.
The following describes a network coding processing method according to an embodiment of the present application.
The network coding processing method of the embodiment of the application may be executed by a first communication device, where the first communication device may be a data sending end or a data receiving end. Optionally, the first communication device may be any one of the following in an IAB network: the UE, the access IAB, the intermediate IAB, the IAB donor-DU, and the IAB donor-CU may be determined according to actual situations, which is not limited in this embodiment of the present application.
As shown in fig. 2, the network coding processing method may include the following steps:
step 201, the first communication device receives first indication information.
In an embodiment of the present application, the first indication information is used to trigger the first communication device to perform a first operation, where the first operation includes at least one of: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device.
In a specific implementation, the first indication information may directly or indirectly indicate at least one of the following: activating the first network coding function; the second network coding function is deactivated, and a specific indication mode of the first indication information may be determined according to an actual situation, which is not limited in the embodiment of the present application.
In practical applications, when configuring the network coding function of the communication device, the configuration granularity may include at least one of: radio Bearer (RB), PDU session, General Packet Radio Service Tunneling Protocol-User Plane (GTP-U) channel (tunnel), Internet Protocol (Internet Protocol, IP) Packet (Packet), Radio Link Control (RLC) channel (channel), Backhaul (BH) RLC channel, and communication device. Thus, the network coding function of the communication device may comprise at least one of: a network coding function corresponding to the RB; a network coding function corresponding to the PDU session; a network coding function corresponding to the communication device; a network coding function corresponding to the GTP-U tunnel; a network coding function corresponding to an IP Packet; a network coding function corresponding to the RLC channel; network coding function corresponding to BH RLC channel.
When the configuration granularity is RB, the states of the network coding functions corresponding to different RBs of the communication device may be the same or different, independently of each other. When the configuration granularity is a PDU session, the states of the network coding functions corresponding to different PDU sessions of the communication device are independent of each other, and may be the same or different. In the case where the configuration granularity is the communication device, the state of the network coding functions of the different RB and PDU sessions of the communication device are the same.
In the embodiment of the application, the network coding function of the communication equipment can be flexibly adjusted. Such as: when a certain transmission path of the first communication device is congested, at least one of the following may be deactivated: all network functions of the first communication device; a network coding function of a first RB, the first RB being a part or all of RBs of a first communication device; a network coding function of a first PDU session, which may be a part or all of a PDU session of a first communication device; a network coding function of a first GTP-U tunnel, which may be part or all of a GTP-U tunnel of a first communication device; a network coding function of a first IP Packet, where the first IP Packet may be a part or all of an IP Packet of a first communication device; a network coding function of a first RLC channel, which may be part or all of an RCL channel of a first communication device; the first BH RLC channel can be part or all BH RLC channels of first communication equipment, so that the problem that data loss is aggravated due to extra data transmission redundancy brought by network coding is avoided. When a certain transmission path state of the first communication device is normal, at least one of the following may be activated (if not previously activated, otherwise left intact): all network functions of the first communication device; a network coding function of a second RB, where the second RB is a part or all of RBs transmitted by the transmission path; a network coding function of a second PDU session, wherein the second PDU session can be part or all of the PDU session transmitted by the transmission path; a network coding function of a second GTP-U tunnel, which may be part or all of the GTP-U tunnel of the first communication device; a network coding function of a second IP Packet, where the second IP Packet may be a part or all of an IP Packet of the first communication device; a network coding function of a second RLC channel, which may be part or all of the RCL channel of the first communication device; and a network coding function of a second BH RLC channel, where the second BH RLC channel may be a part or all of the BH RLC channels of the first communication device, and the data of the transmission path is transmitted by using network coding, so as to improve reliability of data transmission.
Exemplarily, the following steps are carried out: assuming that the first communication device includes 3 Data Radio Bearers (DRBs), which are DRBs 1, DRBs 2, and DRBs 3, respectively, and the transmission path 1 of the first communication device is congested, a network coding function of at least one of the DRBs 1, DRBs 2, and DRBs 3 may be deactivated, so as to avoid a problem of aggravated Data loss due to an additional Data transmission redundancy caused by network coding, thereby improving reliability of Data transmission.
Based on this, it is understood that the first network coding function may be a part or all of the network coding function of the first communication device. Optionally, the first network coding function includes at least one of: a network coding function of at least one radio bearer, RB, of the first communication device; a network coding function of at least one protocol data unit, PDU, session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one general packet radio service tunneling protocol-user plane, GTP-U, channel of the first communication device; a network coding function of at least one internet protocol, IP, packet of the first communication device; a network coding function of at least one radio link control, RLC, channel of the first communication device; at least one network coding function of a backhaul BH RLC channel of the first communication device.
When the first communication device and the second communication device are specifically implemented, the at least one RB may be part or all of RBs between the first communication device and the other communication devices; the at least one PDU session may be a part or all of PDU sessions between the first communication device and other communication devices; the at least one GTP-U channel can be a part of or all GTP-U channels between the first communication device and other communication devices; the at least one IP packet may be a part or all of IP packets between the first communication device and other communication devices; the at least one RCL channel may be part or all of the RCL channels between the first communication device and other communication devices; the at least one BH RLC channel may be a part of or all BH RLC channels between the first communication device and other communication devices, and may be specifically determined according to an actual situation, which is not limited in the implementation of the present application.
In practice, for the case where end-to-end is UE to IAB-donor-CU, the first network coding function may comprise at least one of: a network coding function of at least one RB of the first communication device; at least one PDU session for the first communication device; all network coding functions of the first communication device. For other end-to-end cases (e.g., UE to IAB-donor-DU, IAB-donor-CU to IAB), the first network coding function may include at least one of: all network coding functions of the first communication device; a network coding function of at least one GTP-U channel of the first communication device; a network coding function of at least one IP packet of the first communication device; a network coding function of at least one RLC channel of the first communication device; a network coding function of at least one BH RLC channel of the first communication device.
Likewise, the second network coding function may be part or all of the network coding function of the first communication device. Optionally, the second network coding function includes at least one of: a network coding function of at least one RB of the first communication device; a network coding function of at least one PDU session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one GTP-U channel of the first communication device; a network coding function of at least one IP packet of the first communication device; a network coding function of at least one RLC channel of the first communication device; a network coding function of at least one BH RLC channel of the first communication device. The understanding of the second network coding function is the same as that of the first network coding function, and the detailed explanation about the first network coding function can be referred to, and is not repeated here.
However, it should be noted that, when the first indication information is used to indicate the first network coding function and the second network coding function at the same time, the first network coding function and the second network coding function are different network coding functions of the first communication device.
Step 202, the first communication device executes a first operation according to the indication of the first indication information, where the first operation includes at least one of: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device.
In a specific implementation, the first operation may correspond to an indication of the first indication information.
In a case where the first indication information indicates only activation of the first network coding function, the first operation is to activate the first network coding function.
When the first indication information only indicates that the second network coding function is deactivated, the first operation is to deactivate the second network coding function.
In a case that the first indication information indicates that the first network coding function is activated and a second network coding function corresponding to the first communication device is deactivated, the first operation includes: activating the first network coding function and deactivating the second network coding function.
According to the network coding processing method in the embodiment of the application, the first communication device may activate or deactivate the network coding function corresponding to the first communication device according to the received indication of the first indication information. In this way, the state of the network coding function corresponding to the first communication device can be flexibly adjusted, and thus, the reliability of data transmission can be improved.
The following describes first instruction information of an embodiment of the present application:
optionally, the first indication information may include at least one of:
1) first information sent in a first manner, the first information indicating any one of: activating the first network coding function; deactivating the second network coding function, the first manner comprising at least one of: a broadcast mode, a multicast mode, a unicast mode;
2) second information indicating a transmission state of a transmission path of the first communication device.
In 1), the first information directly indicates to activate the first network coding function and/or deactivate the second network coding function to trigger the first communication device to perform the first operation, so as to improve a rate at which the first communication device adjusts a state of the network coding function corresponding to the first communication device.
In a specific implementation manner, in an implementation manner, the first information may be broadcast or unicast by a network side device, and the network side device may be an IAB denor-CU or an IAB denor-DU, but is not limited thereto.
In another implementation, the first information may be multicast or unicast by the terminal side. In this implementation, the first communication device is a terminal, and the first information may be used to indicate to activate or deactivate a network coding function between the terminal and the terminal. For ease of understanding, reference is made to fig. 3. In fig. 3, the RLC layer is represented by a dotted box, meaning that the RLC layer may be omitted in some cases, i.e., the RLC layer is not provided. Optionally, in a case where the protocol layer includes a network coding layer, since reliability of data transmission may be improved by network coding, the RLC layer may not be provided.
Optionally, in a case that the first mode is a unicast mode, the first information may include at least one of the following: Non-Access Stratum (NAS) signaling, dedicated (dedicated) radio resource Control RRC signaling, Media Access Control (MAC) Control Element (CE) signaling, and Physical Downlink Control Channel (PDCCH) order (command);
in a case where the first scheme is a broadcast scheme or a multicast scheme, the first information may be RRC signaling.
When the first information is NAS signaling, the first information may indicate to activate or deactivate a network coding function corresponding to a PDU session; in the case where the first information is dedicated RRC signaling, the first information may indicate activation or deactivation of a network coding function corresponding to an RB, a PDU session, or a communication device.
In 2), as can be seen from the foregoing, the state of the network coding function is related to the transmission state of the transmission path, and the transmission state of the transmission path includes: an abnormal state, namely the transmission path is congested; normal state, i.e. no congestion of the transmission path. Therefore, the second information may trigger the first communication device to perform the first operation by indicating the transmission state of the transmission path of the first communication device, so that the flexibility indicated by the first indication information may be improved.
Optionally, the second information includes at least one of:
a) a first wireless backhaul and access integrated IAB node sends first flow control feedback information, where the first flow control feedback information is used to indicate that an uplink transmission path is congested, and the first IAB node is an intermediate IAB node or a host IAB node in the uplink transmission path;
b) second indication information sent by a second IAB node, where the second indication information is used to indicate that a downlink transmission path is congested, and the second indication information includes at least one of the following information: congestion indication information and second flow control feedback information, where the second IAB node is an intermediate node in the downlink transmission path or an access IAB node;
c) and a DDDS report of a downlink data transmission state sent by an access IAB node in the downlink transmission path, wherein the DDDS report is used for feeding back the receiving condition of the downlink data.
In a), the first communication device may be an access IAB node, where the access IAB node receives first flow control feedback (flow control feedback) information sent by an upstream node, that is, the first IAB node, and indicates that an uplink transmission path between the host IAB node and the access IAB node is congested, and deactivates a network coding function between the access IAB node and the host IAB node according to the indication of the first flow control feedback. In this case, the second information indicates that the second network coding function is deactivated, the second network coding function is a network coding function between the access IAB node and the home IAB node, and the network coding function is terminated between the access IAB node and the home IAB node.
For ease of understanding, reference is made to fig. 4a and 4 b. In fig. 4a, the network coding function is terminated between DUs of the access IAB node and the home IAB node; in fig. 4b, the network coding function is terminated between CUs of the access IAB node and the home IAB node. The RLC layer in fig. 4a and 4b is understood the same as that in fig. 3, and specifically, reference may be made to the foregoing description, and details are not repeated here.
In b), the first communication device may be a home IAB node, where the home IAB node receives second indication information sent by a second IAB node, indicates that a downlink transmission path between the home IAB node and an access IAB node is congested, and deactivates a network coding function between the home IAB node and the access IAB node according to an indication of the second indication information. In this case, the second information indicates that the second network coding function is deactivated, the second network coding function is a network coding function between the access IAB node and the home IAB node, and the network coding function is terminated between the access IAB node and the home IAB node, which can be seen in fig. 4a and 4 b.
In a case that the second IAB node is an access node, the second indication information may be second flow control feedback information, and the second flow control feedback information is different from the first flow control feedback information mainly in that: the bearer signaling is different. Optionally, the first flow control feedback information is transmitted through BAP layer signaling, and the second flow control feedback information is transmitted through F1AP layer signaling.
In a case where the second IAB node is an intermediate node, the second indication information may be congestion indication (congestion indicator) information carried by F1AP signaling, but is not limited thereto.
In c), the first communication device may be a home IAB node, where the home IAB node receives a Downlink Data Delivery Status (DDDS) report sent by an access IAB node, and feeds back a reception condition of Downlink Data. After receiving the DDDS report, the host IAB node may determine whether the downlink transmission path is congested according to a reception condition of downlink data fed back by the DDDS report, for example: if the packet loss rate of the downlink data fed back by the DDDS report is high, it indicates that the downlink transmission path may be congested.
When determining that the downlink transmission path is congested according to the DDDS report, the second information indicates to deactivate the second network coding function, where the second network coding function may be a network coding function between an access IAB node and a home IAB node, and the network coding function is terminated between the access IAB node and the home IAB node, which may refer to fig. 4a and 4 b; the second network coding function may be a network coding function between the home IAB node and the terminal, and the network coding function is terminated between the home IAB node and the terminal, which may be referred to fig. 5, in fig. 5, the network coding function is terminated between the CU of the home IAB node and the terminal, and an understanding of the RLC layer in fig. 5 is the same as an understanding of the RLC layer in fig. 3, which may be referred to the foregoing description specifically, and is not described herein again.
In the embodiment of the present application, the state of the network coding function may be flexibly adjusted, and in the switching stage of the state of the network coding function, two types of data packets may exist at the same time: a network encoded data packet; data packets that are not network coded. When the two types of data packets coexist, because the processing modes of the two types of data packets are different, for example, the data packet subjected to network coding needs to be decoded at a data receiving end, and the data packet not subjected to network coding does not need to be decoded at the data receiving end, the data receiving end needs to distinguish the two types of data packets so as to correctly process the data packets of different types, thereby improving the accuracy of data processing.
In order to enable the data receiving end to distinguish the data packet which is subjected to network coding from the data which is not subjected to network coding, at the data receiving end, the following operations can be performed:
optionally, in a case that the first communication device is a data sending device, after the first communication device executes a first operation according to the indication of the first indication information, the method further includes:
the first communication device generating a first data packet;
the data transmission device performs a second operation, the second operation including at least one of:
i) adding a first packet header to the first data packet in a first protocol layer, wherein the first packet header is provided with first identification information corresponding to the type of the first data packet, the first protocol layer is a lower layer of a second protocol layer, and the second protocol layer has a network coding function;
ii) transmitting said first data packet over a first channel corresponding to the type of said first data packet;
iii) sending third indication information indicating a status of a network coding function of the first communication device;
wherein the type of the first data packet is any one of the following: network encoded data packets, network unencoded data packets.
In the embodiment of the present application, the data packet may be a data pdu (data pdu), or a control pdu (control pdu), but is not limited thereto.
It is understood that the first data packet is related to the status of the network coding function of the target object, that is, the first communication device may generate the first data packet according to the status of the network coding function of the target object. Specifically, when the network coding function of the target object is in an activated state, the first data packet is a data packet subjected to network coding; when the network coding function of the target object is in a deactivated state, the first data packet is a data packet which is not subjected to network coding. Wherein the target object may comprise at least one of: transmitting the RB of the first data packet; a PDU session to which the first packet belongs; the first communication device; transmitting a GTP-U channel to which the first data packet belongs; an IP packet associated with the first data packet (e.g., an IP packet is carried in the first data packet); transmitting the RCL channel of the first data packet; and transmitting the BH RCL channel of the first data packet.
Such as: if the network coding function of the RB for transmitting the first data packet is in an activated state, the type of the first data packet is a data packet subjected to network coding; and if the network coding function of the RB for transmitting the first data packet is in a deactivated state, the type of the first data packet is a data packet which is not subjected to network coding.
In i), the corresponding first identification information is different for different types of data packets. Therefore, the data receiving end can distinguish the type of the received data packet based on the expression form of the first identification information carried in the packet header of the first protocol layer, and further determine whether to deliver the data packet to the protocol layer with the network coding function for processing, so that the reliability of data transmission is improved.
Optionally, the first identification information is any one of the following items in the first packet header: the value of the first reserved bit; a value of a first field indicating a type of the packet; an identifier of a first backhaul adaptive protocol, BAP, transmission path; identification of the BAP address of the first destination node.
Under the condition that the first identification information is a first reserved bit, different values of the first reserved bit indicate different types of data packets, such as: if the value of the first reserved bit is 0, the type of the first data packet is a data packet which is not subjected to network coding; and if the value of the first reserved bit is 1, indicating that the type of the first data packet is a network coded data packet.
In a case that the first identifier information is a first field, the first field may be a newly added field dedicated to indicate a type of the data packet, and different values of the first field indicate different types of data packets, for example: if the value of the first field is 0, the type of the first data packet is a data packet which is not subjected to network coding; if the value of the first field is 1, the type of the first data packet is the data packet which is subjected to network coding.
In the case that the first identification information is an identification of the first transmission path, two identifications may be configured for the first transmission path in advance, and different identifications correspond to different data packet types. Such as: assuming that the first transmission path is IAB1- > IAB2- > IAB3- > IAB-donor, the network side may configure 2 path IDs for the transmission path, which are a and B respectively; when a data packet subjected to network coding reaches the BAP layer, the BAP header is filled with a path ID of A, and when a data packet not subjected to network coding reaches the BAP layer, the BAP header is filled with a path ID of B. Therefore, when the data receiving end receives the data packet, whether the data is the data packet subjected to network coding or the data packet not subjected to network coding can be distinguished according to the type of the path ID.
In the case that the first identification information is an identification of a BAP address of the first destination node, two identifications may be configured in advance for the BAP address of the first destination node, and different identifications correspond to different data packet types. Such as: when the data packet which is subjected to network coding reaches the BAP layer, the BAP header is filled with the identification of the BAP address which is C, and when the data packet which is not subjected to network coding reaches the BAP layer, the BAP header is filled with the identification of the BAP address which is D. Therefore, when the data receiving end receives the data packet, whether the data is the data packet subjected to network coding or the data packet not subjected to network coding can be distinguished according to the type of the identification of the BAP address.
The second protocol layer can be a network coding layer, or a protocol layer integrated with a network coding function; the first protocol Layer is a Lower Layer (Lower Layer) of the second protocol Layer. In fig. 3 to 5, the second protocol layer is a network coding layer (Net Cod), the first protocol layer may be a MAC layer, and in fig. 4a and 4b, the first protocol layer may also be a BAP layer, but is not limited thereto.
In ii), a corresponding relationship between the channel and the type of the data packet transmitted by the channel may be preset, and different types of data packets are transmitted through different channels, so that the data receiving end may determine the type of the data packet based on the channel receiving the data packet, and further determine whether to deliver the data packet to a protocol layer having a network coding function for processing, thereby improving reliability of data transmission.
Optionally, the first channel is any one of: a backhaul radio link control channel (BH RLC channel); radio link control channel (RLC channel); logical control Channel (LCH).
In iii), the data sending device may directly send third indication information to indicate a state of the network coding function of the device, so that the data receiving device distinguishes a type of a received data packet of the device according to the third indication information, and further determines whether to deliver the data packet to a protocol layer with the network coding function for processing, thereby improving reliability of data transmission.
iii) may be applicable in case all network coding functions of the communication device are in an activated or deactivated state. If the third indication information indicates that all network coding functions of a certain communication device are in an activated state, all data packets received by the data receiving device from the communication device are considered to be subjected to network coding; if the data receiving device is in the deactivated state, all data packets received by the data receiving device from the communication device are considered to be not subjected to network coding.
In implementation, the third indication information may be sent by the terminal in the IAB network to the access IAB node, and then the IAB node may process the data packet by using i) and ii), which may refer to the foregoing description and is not described herein again.
In a case that the first communication device is a data receiving device, optionally, after the first communication device performs a first operation according to the indication of the first indication information, the method further includes:
the first communication equipment receives a second data packet sent by second communication equipment, and the second data packet is generated based on the state of the network coding function of the second communication equipment;
the first communication device processes the second data packet according to the type of the second data packet;
wherein the type of the second data packet is any one of the following: network encoded data packets, network unencoded data packets.
In the concrete implementation, the data packet subjected to network coding can be submitted to a protocol layer with a network coding function, and then decoded; for the data packet which is not subjected to network coding, decoding is not required, and therefore, the data packet can not be delivered to a protocol layer with a network coding function.
Optionally, after the first communication device receives the second data packet, before the first communication device processes the second data packet according to the type of the second data packet, the method further includes:
the first communication equipment determines the type of the second data packet according to third information;
wherein the third information comprises at least one of:
a second packet header of the second data packet, where the second packet header is provided with second identification information corresponding to the type of the second data packet;
a second channel for transmitting the second data packet, the second channel corresponding to a type of the second data packet;
and fourth indication information sent by a second communication device, wherein the second communication device is a communication device sending the second data packet, and the fourth indication information indicates the state of a network coding function of the second communication device.
In a specific implementation, the second communication device may be any other communication device except the first communication device, which may be determined according to an actual situation, and this is not limited in this embodiment of the present application.
Optionally, the second identification information is any one of the following items in the second packet header: the value of the second reserved bit; a value of a second field indicating a type of the data packet; an identification of a second BAP transmission path; identification of the BAP address of the second destination node.
Optionally, the second channel is any one of: a backhaul radio link control channel; a radio link control channel; a logical control channel.
The optional embodiment is an embodiment of a data receiving device corresponding to the data transmitting device, and therefore, reference may be made to the description of the data transmitting device, and the same advantageous effects may be achieved. To avoid repetition of the description, the description is omitted.
It should be noted that, various optional implementations described in the embodiments of the present application may be implemented in combination with each other or separately, and the embodiments of the present application are not limited to this.
For ease of understanding, examples are illustrated below:
the first embodiment is as follows: signaling design for network coding activation/deactivation.
The network coding function may be pre-configured for each RB or PDU (per RB/PDU) at the time of configuration, i.e., the IAB/UE node labels RBs that may need to use the network coding function in advance. When the activation is needed, the broadcast information is carried out, and the UE/IAB receiving the information can start coding transmission on all RB/PDU pre-configured with the function; when deactivation is required (i.e., when link quality degrades or data congestion occurs due to a problem with the current link), all UEs/IABs may deactivate this function (since the link is already in problem, all code class transmissions may be cancelled).
The network coding function is activated/deactivated when the IAB node or UE receives at least one of the following information:
(1) the network side broadcasts the information whether to activate the network coding;
(2) the network side unicasts information whether to activate network coding, including NAS signaling (per PDU session performs activation/deactivation of network coding function), dedicated RRC signaling (per RB or per IAB-node/UE performs activation/deactivation of network coding function), and/or MAC CE is adopted, and/or PDCCH order;
(3) when the access IAB node receives the flow control feedback sent by its upstream node and indicates congestion of uplink transmission data, the access IAB node deactivates an end-to-end network coding function with the IAB-node, which may be shown in fig. 4a and 4 b;
(4) when the IAB-node receives the congestion indicator indicated by the IAB node (access or intermediate node), and indicates that the downlink transmission data is congested, the end-to-end network coding function between the IAB node and the IAB node is deactivated, which may be shown in fig. 4a and fig. 4 b;
(5) the IAB-donor receives the DDDS report sent by the access IAB node, and when the information indicates that the downlink transmission data is congested (for example, when the packet loss rate is higher), deactivates the end-to-end network coding function with the IAB node, which may refer to fig. 4a, fig. 4b, and fig. 5;
(6) the terminal side multicasts the information whether to activate the network coding or unicasts the information whether to activate the network coding (for example, using MAC CE), and the UE receiving the information activates/deactivates the network coding mechanism according to the indication in the information, as shown in fig. 3, the RLC layer is indicated by a dashed box, which means that the RLC layer may be omitted.
Example two: processing scheme of encoded/uncoded data during the transition of activation/deactivation.
In order to be able to distinguish between encoded/raw data, the lower protocol layer of the network encoding layer (processing module) needs to be enhanced, such as tagging the header (header) of the data to indicate the data type. When the receiving end receives the data packet, whether the packet is delivered to a network coding layer (processing module) for processing is selected according to the type indication.
(1) The network coding function terminates between the access IAB and the IAB-donor node.
And Option 1: and indicating whether the BAP/IP data packet is subjected to network coding processing or not in the header of the BAP/IP data packet.
a) Defining an existing Reserved bit or introducing a new field to indicate that the data packet is subjected to network coding; when a data packet subjected to network coding reaches a BAP layer for processing, setting '1' to the bit to indicate that the data packet is a data packet subjected to network coding, and setting '0' to be an uncoded data packet;
b) the path IDs are used for differentiation, that is, two types of path IDs are configured in advance on the network side, where one type of path ID is allocated to be used as a route of a packet subjected to network coding processing, and the other type of path ID is allocated to be used as a route of a packet not subjected to network coding processing. Such as: assuming that the physical transmission path is IAB1- > IAB2- > IAB3- > IAB-donor, the network side may configure 2 path IDs for the physical path, which are a and B, respectively; when a data packet subjected to network coding reaches the BAP layer, the BAP header is filled with a path ID of A, and when a data packet not subjected to network coding reaches the BAP layer, the BAP header is filled with a path ID of B. Therefore, when receiving the data packet, the receiving end can distinguish whether the data is the original data block or the coded data packet according to the type of the path ID.
c) And distinguishing by using destination BAP addresses, and configuring two types of destination BAP addresses in advance by the network side with the path ID, wherein one type is distributed to be used as a route of a data packet subjected to network coding processing, and the other type is distributed to be used as a route of a data packet not subjected to network coding processing. Therefore, when the receiving end receives the data packet, whether the data is an original data block or an encoded data block can be distinguished according to the type of destination BAP address.
When the BAP layer of the receiving end receives the data, the BAP layer reads the BAP header to indicate that the data passes through the network coding, and then the data is delivered to a network coding layer (processing module) of the receiving end for decoding, otherwise, the data is directly delivered to an upper layer by skipping the network coding and decoding processing.
And Option 2: and dividing different BH RLC channel sets, and using different BH RLC channels to carry different types of data. If the network side is configured with two types of BH RLC channels in advance, one type of BH RLC channels is used for mapping data packets processed by network coding, and the other type of BH RLC channels is used for mapping data packets not processed by network coding. When receiving end BAP layer receives data from specific BH RLC channel, it can know whether the data packet is processed by network coding.
(2) The network coding function is terminated between the UE and the IAB-donor node.
And Option 1: (uplink and downlink unified scheme) indicating the type of the data packet in a header of the RLC PDU, for example, defining an existing Reserved bit to indicate that the data packet is subjected to network coding; when the network coded data packet arrives at the RLC layer for processing, the bit is set to "1" to indicate that the data packet is a network coded data packet, and set to "0" as an uncoded data packet. This embodiment may also be applicable between the terminating UE and the UE for the network coding function.
Option 2：
a) Ascending: the UE indicates the state (activation or deactivation) of the network coding function to an access IAB node through the MAC CE, if the activation is indicated, all the data transmitted later are data processed by network coding, and if the deactivation is indicated, all the data transmitted later are original data. In addition, the access IAB node indicates the type of the data packet according to the option1/2 in (1).
b) Uplink and downlink are unified (RLC layer still remains in fig. 3): multiple RLC entries of per DRB per UE are established, for example, one RLC leg (i.e., RLC channel) is used to transmit network coded data, and the other RLC legs are used to transmit original data, and each RLC leg may belong to the same or different serving cells. Such as: when the access IAB node issues data to the UE side, a channel for transmitting network coding is selected from RLC channels corresponding to 2 RLC entities for transmitting a data packet, so that the UE can distinguish data types when receiving the data packet.
c) Uplink and downlink unification (fig. 3 removes RLC layer): the network side divides the LCH set in advance, one group of LCH sets is used for representing data transmitted through network coding, and the other group of LCH sets is used for representing original data; i.e., indicating at the MAC layer whether the LCH is for transmission of network coded packets, multiple network coded packets can be MAC-transmitted directly to the UE at the access IAB-node.
The method and the device can be suitable for IAB networks, double-connection/multi-connection wireless networks, relay networks based on sidelink and the like.
The application provides a signaling design method for activating/deactivating network codes, which can enable the network codes to be flexibly configured in a wireless network for use, and reduce unnecessary resource configuration and calculation overhead. In addition, a scheme of how a receiving end distinguishes/processes data packets subjected to network coding and network coding in a switching stage of network coding activation/deactivation is provided, and the packet loss rate of a communication system is reduced.
It should be noted that, in the network coding processing method provided in the embodiment of the present application, the execution main body may be a network coding processing apparatus, or a control module in the network coding processing apparatus for executing the network coding processing method. In the embodiment of the present application, a network coding processing device is taken as an example to execute a network coding processing method, and the network coding processing device provided in the embodiment of the present application is described.
Referring to fig. 6, fig. 6 is a structural diagram of a network coding processing device according to an embodiment of the present application.
As shown in fig. 6, the network coding processing apparatus 600 includes:
a first receiving module 601, configured to receive first indication information by a first communication device;
a first operation module 602, configured to perform, by the first communication device, a first operation according to the indication of the first indication information, where the first operation includes at least one of: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device.
Optionally, the first network coding function includes at least one of: a network coding function of at least one radio bearer, RB, of the first communication device; a network coding function of at least one protocol data unit, PDU, session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one general packet radio service tunneling protocol-user plane, GTP-U, channel of the first communication device; a network coding function of at least one internet protocol, IP, packet of the first communication device; a network coding function of at least one radio link control, RLC, channel of the first communication device; a network coding function of at least one backhaul BH RLC channel of the first communication device;
the second network coding function comprising at least one of: a network coding function of at least one RB of the first communication device; a network coding function of at least one PDU session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one GTP-U channel of the first communication device; a network coding function of at least one IP packet of the first communication device; a network coding function of at least one RLC channel of the first communication device; a network coding function of at least one BH RLC channel of the first communication device.
Optionally, the first indication information includes at least one of:
first information sent by a first mode, wherein the first information is used for indicating at least one of the following items: activating the first network coding function; deactivating the second network coding function, the first manner comprising at least one of: a broadcast mode, a multicast mode, a unicast mode;
second information indicating at least one of: a transmission state of a transmission path of the first communication device.
Optionally, when the first mode is a unicast mode, the first information includes at least one of the following items: non-access stratum (NAS) signaling, special Radio Resource Control (RRC) signaling, Media Access Control (MAC) control unit (CE) signaling and Physical Downlink Control Channel (PDCCH) commands;
and when the first mode is a broadcast mode or a multicast mode, the first information is RRC signaling.
Optionally, the second information includes at least one of:
a first wireless backhaul and access integrated IAB node sends first flow control feedback information, where the first flow control feedback information is used to indicate that an uplink transmission path is congested, and the first IAB node is an intermediate IAB node or a host IAB node in the uplink transmission path;
second indication information sent by a second IAB node, where the second indication information is used to indicate that a downlink transmission path is congested, and the second indication information includes at least one of the following information: congestion indication information and second flow control feedback information, where the second IAB node is an intermediate node in the downlink transmission path or an access IAB node;
and a DDDS report of a downlink data transmission state sent by an access IAB node in the downlink transmission path, wherein the DDDS report is used for feeding back the receiving condition of the downlink data.
Optionally, in a case that the first communication device is a data transmission device, the network coding processing apparatus 600 further includes:
a generating module, configured to generate a first data packet by the first communication device;
a second operation module, configured to execute a second operation by the data sending device, where the second operation includes at least one of:
adding a first packet header to the first data packet in a first protocol layer, wherein first identification information corresponding to the type of the first data packet is arranged in the first packet header, the first protocol layer is a lower layer of a second protocol layer, and the second protocol layer has a network coding function;
transmitting the first data packet through a first channel corresponding to the type of the first data packet;
transmitting third indication information indicating a state of a network coding function of the first communication device;
wherein the type of the first data packet is any one of the following: network encoded data packets, network unencoded data packets.
Optionally, the first identification information is any one of the following items in the first packet header: the value of the first reserved bit; a value of a first field indicating a type of the packet; an identifier of a first backhaul adaptive protocol, BAP, transmission path; identification of the BAP address of the first destination node.
Optionally, the first channel is any one of: a backhaul radio link control channel; a radio link control channel; a logical control channel.
Optionally, in a case that the first communication device is a data receiving device, the network coding processing apparatus 600 further includes:
a second receiving module, configured to receive, by the first communication device, a second data packet;
a third operation module, configured to process, by the first communication device, the second packet according to the type of the second packet;
wherein the type of the second data packet is any one of the following: network encoded data packets, network unencoded data packets.
Optionally, the network coding processing apparatus 600 further includes:
a determining module, configured to determine, by the first communication device, a type of the second packet according to third information;
wherein the third information comprises at least one of:
a second packet header of the second data packet, where the second packet header is provided with second identification information corresponding to the type of the second data packet;
a second channel for transmitting the second data packet, the second channel corresponding to a type of the second data packet;
and fourth indication information sent by a second communication device, wherein the second communication device is a communication device sending the second data packet, and the fourth indication information indicates the state of a network coding function of the second communication device.
Optionally, the second identification information is any one of the following items in the second packet header: the value of the second reserved bit; a value of a second field indicating a type of the data packet; an identification of a second BAP transmission path; identification of the BAP address of the second destination node.
Optionally, the second channel is any one of: a backhaul radio link control channel; a radio link control channel; a logical control channel. The network coding processing device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a communication device.
The network coding processing device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The network coding processing apparatus 600 provided in this embodiment of the present application can implement each process implemented in the method embodiment of fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not described here again.
Optionally, as shown in fig. 7, an embodiment of the present application further provides a communication device 700, which includes a processor 701, a memory 702, and a program or an instruction stored in the memory 702 and executable on the processor 701, where the program or the instruction is executed by the processor 701 to implement each process of the method embodiment in fig. 2, and can achieve the same technical effect, and no further description is provided here to avoid repetition.
The embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the foregoing network coding processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
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 the instruction is executed by a processor, the program or the instruction implements each process of the method embodiment in fig. 2, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The 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 configured to run a network-side device program or an instruction, to implement each process of the method embodiment of fig. 2, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising" is used to specify the presence of stated features, integers, steps, operations, elements, components, operations, components, or the components, and/components. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present application has been described with reference to the embodiments shown in the drawings, the present application is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that many more modifications and variations can be made without departing from the spirit of the application and the scope of the appended claims.

Claims (26)

1. A network coding processing method, comprising:
the first communication equipment receives first indication information;
the first communication equipment executes a first operation according to the indication of the first indication information, wherein the first operation comprises at least one of the following operations: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device.
2. The method of claim 1, wherein the first network coding function comprises at least one of: a network coding function of at least one radio bearer, RB, of the first communication device; a network coding function of at least one protocol data unit, PDU, session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one general packet radio service tunneling protocol-user plane, GTP-U, channel of the first communication device; a network coding function of at least one internet protocol, IP, packet of the first communication device; a network coding function of at least one radio link control, RLC, channel of the first communication device; a network coding function of at least one backhaul BH RLC channel of the first communication device;
the second network coding function comprising at least one of: a network coding function of at least one RB of the first communication device; a network coding function of at least one PDU session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one GTP-U channel of the first communication device; a network coding function of at least one IP packet of the first communication device; a network coding function of at least one RLC channel of the first communication device; a network coding function of at least one BH RLC channel of the first communication device.
3. The method of claim 1, wherein the first indication information comprises at least one of:
first information sent by a first mode, wherein the first information is used for indicating at least one of the following items: activating the first network coding function; deactivating the second network coding function, the first manner comprising at least one of: a broadcast mode, a multicast mode, a unicast mode;
second information indicating at least one of: a transmission state of a transmission path of the first communication device.
4. The method according to claim 3, wherein in the case that the first mode is a unicast mode, the first information comprises at least one of the following: non-access stratum (NAS) signaling, special Radio Resource Control (RRC) signaling, Media Access Control (MAC) control unit (CE) signaling and Physical Downlink Control Channel (PDCCH) commands;
and when the first mode is a broadcast mode or a multicast mode, the first information is RRC signaling.
5. The method of claim 3, wherein the second information comprises at least one of:
a first wireless backhaul and access integrated IAB node sends first flow control feedback information, where the first flow control feedback information is used to indicate that an uplink transmission path is congested, and the first IAB node is an intermediate IAB node or a host IAB node in the uplink transmission path;
second indication information sent by a second IAB node, where the second indication information is used to indicate that a downlink transmission path is congested, and the second indication information includes at least one of the following information: congestion indication information and second flow control feedback information, where the second IAB node is an intermediate node in the downlink transmission path or an access IAB node;
and a DDDS report of a downlink data transmission state sent by an access IAB node in the downlink transmission path, wherein the DDDS report is used for feeding back the receiving condition of the downlink data.
6. The method according to claim 1, wherein in a case that the first communication device is a data transmission device, after the first communication device performs a first operation according to the indication of the first indication information, the method further comprises:
the first communication device generating a first data packet;
the data transmission device performs a second operation, the second operation including at least one of:
adding a first packet header to the first data packet in a first protocol layer, wherein first identification information corresponding to the type of the first data packet is arranged in the first packet header, the first protocol layer is a lower layer of a second protocol layer, and the second protocol layer has a network coding function;
transmitting the first data packet through a first channel corresponding to the type of the first data packet;
transmitting third indication information indicating a state of a network coding function of the first communication device;
wherein the type of the first data packet is any one of the following: network encoded data packets, network unencoded data packets.
7. The method of claim 6, wherein the first identification information is any one of the following of the first packet header: the value of the first reserved bit; a value of a first field indicating a type of the packet; an identifier of a first backhaul adaptive protocol, BAP, transmission path; identification of the BAP address of the first destination node.
8. The method of claim 6, wherein the first channel is any one of: a backhaul radio link control channel; a radio link control channel; a logical control channel.
9. The method according to claim 1, wherein in a case that the first communication device is a data receiving device, after the first communication device performs a first operation according to the indication of the first indication information, the method further comprises:
the first communication device receiving a second data packet;
the first communication device processes the second data packet according to the type of the second data packet;
wherein the type of the second data packet is any one of the following: network encoded data packets, network unencoded data packets.
10. The method of claim 9, wherein after the first communication device receives the second packet and before the first communication device processes the second packet according to the type of the second packet, the method further comprises:
the first communication equipment determines the type of the second data packet according to third information;
wherein the third information comprises at least one of:
a second packet header of the second data packet, where the second packet header is provided with second identification information corresponding to the type of the second data packet;
a second channel for transmitting the second data packet, wherein the second channel corresponds to the type of the second data packet;
and fourth indication information sent by a second communication device, wherein the second communication device is a communication device sending the second data packet, and the fourth indication information indicates the state of a network coding function of the second communication device.
11. The method of claim 10, wherein the second identification information is any one of the following items of the second packet header: the value of the second reserved bit; a value of a second field indicating a type of the data packet; an identification of a second BAP transmission path; identification of the BAP address of the second destination node.
12. The method of claim 10, wherein the second channel is any one of: a backhaul radio link control channel; a radio link control channel; a logical control channel.
13. A network code processing apparatus, comprising:
the first receiving module is used for receiving the first indication information by the first communication equipment;
a first operation module, configured to, by the first communication device, perform a first operation according to the indication of the first indication information, where the first operation includes at least one of: activating a first network coding function of the first communication device; deactivating a second network coding function of the first communication device.
14. The network coding processing apparatus of claim 13, wherein the first network coding function comprises at least one of: a network coding function of at least one radio bearer, RB, of the first communication device; a network coding function of at least one protocol data unit, PDU, session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one general packet radio service tunneling protocol-user plane, GTP-U, channel of the first communication device; a network coding function of at least one internet protocol, IP, packet of the first communication device; a network coding function of at least one radio link control, RLC, channel of the first communication device; a network coding function of at least one backhaul BH RLC channel of the first communication device;
the second network coding function comprising at least one of: a network coding function of at least one RB of the first communication device; a network coding function of at least one PDU session of the first communication device; all network coding functions of the first communication device; a network coding function of at least one GTP-U channel of the first communication device; a network coding function of at least one IP packet of the first communication device; a network coding function of at least one RLC channel of the first communication device; a network coding function of at least one BH RLC channel of the first communication device.
15. The apparatus according to claim 13, wherein the first indication information comprises at least one of:
first information sent by a first mode, wherein the first information is used for indicating at least one of the following items: activating the first network coding function; deactivating the second network coding function, the first manner comprising at least one of: a broadcast mode, a multicast mode, a unicast mode;
second information indicating at least one of: a transmission state of a transmission path of the first communication device.
16. The apparatus according to claim 15, wherein in a case where the first mode is a unicast mode, the first information includes at least one of: non-access stratum (NAS) signaling, special Radio Resource Control (RRC) signaling, Media Access Control (MAC) control unit (CE) signaling and Physical Downlink Control Channel (PDCCH) commands;
and when the first mode is a broadcast mode or a multicast mode, the first information is RRC signaling.
17. The network coding processing apparatus of claim 15, wherein the second information comprises at least one of:
a first wireless backhaul and access integrated IAB node sends first flow control feedback information, where the first flow control feedback information is used to indicate that an uplink transmission path is congested, and the first IAB node is an intermediate IAB node or a host IAB node in the uplink transmission path;
second indication information sent by a second IAB node, where the second indication information is used to indicate that a downlink transmission path is congested, and the second indication information includes at least one of the following information: congestion indication information and second flow control feedback information, wherein the second IAB node is an intermediate node in the downlink transmission path or an access IAB node;
a DDDS report of a downlink data transmission status sent by an access IAB node in a downlink transmission path, where the DDDS report is used for feeding back a reception condition of downlink data.
18. The apparatus according to claim 13, wherein in a case where the first communication device is a data transmission device, the apparatus further comprises:
a generating module, configured to generate a first data packet by the first communication device;
a second operation module, configured to execute a second operation by the data sending device, where the second operation includes at least one of:
adding a first packet header to the first data packet in a first protocol layer, wherein first identification information corresponding to the type of the first data packet is arranged in the first packet header, the first protocol layer is a lower layer of a second protocol layer, and the second protocol layer has a network coding function;
transmitting the first data packet through a first channel corresponding to the type of the first data packet;
transmitting third indication information indicating a state of a network coding function of the first communication device;
wherein the type of the first data packet is any one of the following: network encoded data packets, network unencoded data packets.
19. The network coding processing device of claim 18, the first identification information being any one of the following of the first packet header: the value of the first reserved bit; a value of a first field indicating a type of the packet; an identifier of a first backhaul adaptive protocol, BAP, transmission path; identification of the BAP address of the first destination node.
20. The network coding processing device of claim 18, wherein the first channel is any one of: a backhaul radio link control channel; a radio link control channel; a logical control channel.
21. The apparatus according to claim 13, wherein in a case where the first communication device is a data receiving device, the apparatus further comprises:
a second receiving module, configured to receive a second data packet by the first communication device;
a third operation module, configured to process, by the first communication device, the second packet according to the type of the second packet;
wherein the type of the second data packet is any one of the following: network encoded data packets, network unencoded data packets.
22. The network code processing device of claim 21, wherein the network code processing device further comprises:
a determining module, configured to determine, by the first communication device, a type of the second packet according to third information;
wherein the third information comprises at least one of:
a second packet header of the second data packet, where the second packet header is provided with second identification information corresponding to the type of the second data packet;
a second channel for transmitting the second data packet, wherein the second channel corresponds to the type of the second data packet;
and fourth indication information sent by a second communication device, wherein the second communication device is a communication device sending the second data packet, and the fourth indication information indicates the state of a network coding function of the second communication device.
23. The apparatus according to claim 22, wherein the second identification information is any one of the following items in the second packet header: the value of the second reserved bit; a value of a second field indicating a type of the data packet; an identification of a second BAP transmission path; identification of the BAP address of the second destination node.
24. The network coding processing apparatus of claim 22, wherein the second channel is any one of: a backhaul radio link control channel; a radio link control channel; a logical control channel.
25. A communication device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the network coding processing method according to any one of claims 1 to 12.
26. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions which, when executed by a processor, implement the steps of the network coding processing method according to any of claims 1 to 12.
CN202110283159.9A 2021-03-16 2021-03-16 Network coding processing method and device, communication equipment and readable storage medium Pending CN115087033A (en)

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US9179362B2 (en) * 2011-08-25 2015-11-03 Texas Instruments Incorporated Systems and methods for networking coding using Reed-Solomon codes
US9113470B2 (en) * 2011-08-26 2015-08-18 Texas Instruments Incorporated Systems and methods for network coding using maximum distance separable (MDS) linear network codes
US8989322B2 (en) * 2012-02-15 2015-03-24 Intel Mobile Communications GmbH Data detection and receiver circuit
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