CN115134047A - Transmission method, device, equipment and readable storage medium - Google Patents
Transmission method, device, equipment and readable storage medium Download PDFInfo
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- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
- H04L1/0693—Partial feedback, e.g. partial channel state information [CSI]
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- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
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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
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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
- H04W28/0289—Congestion control
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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
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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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
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
Abstract
The application discloses a transmission method, a device, equipment and a readable storage medium, which belong to the technical field of communication, and the transmission method of the embodiment of the application comprises the following steps: the sending node sends indication information to the forwarding node, wherein the indication information is used for indicating the network coding information of the first data. In the embodiment of the application, network coding information can be interacted between the sending node and the forwarding node, and the data transmission efficiency based on network coding is improved.
Description
Technical Field
The present application belongs to the field of communication technologies, and in particular, to a transmission method, apparatus, device, and readable storage medium.
Background
Network coding may be implemented at the application layer, the transport layer, or the Radio Access Network (RAN) side. If the application layer or the transmission layer has already performed network coding, and the radio access network does not know that the data to be transmitted has already been performed network coding, and performs network coding on the data again, the redundancy of data transmission is increased, and thus, the extra gain obtained is less; conversely, if the radio access network does not perform network coding, and the application layer or the transport layer does not perform network coding either, the network coding gain is lost.
Disclosure of Invention
Embodiments of the present application provide a transmission method, an apparatus, a device, and a readable storage medium, which solve the problem of how to improve network coding efficiency.
In a first aspect, a transmission method is provided, including:
the sending node sends indication information to the forwarding node, wherein the indication information is used for indicating the network coding information of the first data.
In a second aspect, a transmission method is provided, including:
the forwarding node receives indication information from the sending node, wherein the indication information is used for indicating the network coding information of the first data.
In a third aspect, a transmission apparatus is provided, which is applied to a sending node, and includes:
the first sending module is configured to send indication information to the forwarding node, where the indication information is used to indicate network coding information of the first data.
In a fourth aspect, a transmission apparatus is provided, which is applied to a forwarding node, and includes:
and a second receiving module, configured to receive indication information from the sending node, where the indication information is used to indicate network coding information of the first data.
In a fifth aspect, a terminal is provided, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first or second aspect.
A sixth aspect provides a terminal comprising a processor and a communication interface, wherein the processor is configured to implement the steps of the method according to the first or second aspect when executed.
In a seventh aspect, a network device is provided, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first or second aspect.
In an eighth aspect, a network side device is provided, which includes a processor and a communication interface, where the communication interface is configured to implement the steps of the method according to the first aspect or the second aspect when executed.
A ninth aspect provides a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first or second aspect.
A tenth aspect provides a computer program/program product stored on a non-volatile storage medium for execution by at least one processor to implement the steps of the method of processing as described in the first or second aspect.
In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the method of processing according to the first or second aspect.
In the embodiment of the application, the network coding information can be interacted between the sending node and the forwarding node, and the network coding efficiency is improved.
Drawings
FIG. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;
fig. 2 is a flowchart of a transmission method provided in an embodiment of the present application;
fig. 3 is a second flowchart of a transmission method according to an embodiment of the present application;
fig. 4 is a third flowchart of a transmission method according to an embodiment of the present application;
fig. 5 is a fourth flowchart of a transmission method according to an embodiment of the present application;
fig. 6 is a fifth flowchart of a transmission method according to an embodiment of the present application;
fig. 7 is a sixth flowchart of a transmission method according to an embodiment of the present application
Fig. 8 is a schematic diagram of a transmission device provided in an embodiment of the present application;
fig. 9 is a second schematic diagram of a transmission device according to an embodiment of the present application;
fig. 10 is a schematic diagram of a terminal in an embodiment of the present application;
fig. 11 is a schematic diagram of a network-side device in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly 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 that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.
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 sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein generally refer to a class and do not limit the number of objects, for example, a first object can be one or more. In the specification and claims, "and" represents at least one of connected objects, and a character "/" generally indicates that a preceding and succeeding related object is 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-Advanced (LTE-a) 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. The terms "system" and "network" in the embodiments of the present application are often interchangeableThe techniques described may be used in connection with both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as 6 th generation (6 th generation) th Generation, 6G) communication system.
In order to facilitate understanding of the embodiments of the present application, the following technical points are introduced below:
introduction to network coding:
when the original data block is subjected to network coding, a sending node needs to perform three steps of 'original data block segmentation', 'coding matrix generation' and 'coding', and a receiving node needs to perform 'decoding'. Network coding has the characteristics of:
(1) the transmitting node partitions the original data block into a number (N) of sub-blocks and then encodes to generate a number (M, M > ═ N) of encoded sub-blocks.
(2) The transmitting node transmits the M encoded sub-blocks to the receiving node, and the receiving node can successfully recover the original data block based on the received X (N ═ X < ═ M) encoded sub-blocks. Based on the characteristics of network coding, a receiving node has no bias on the received coded packet, and the coded packet can be successfully decoded 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 over the network such that in case some encoded sub-blocks are lost, the forwarding node can still reply to the original data based on the encoded sub-blocks that have been received.
In an access and backhaul (IAB) system, data undergoes multi-hop wireless transmission between a donor distributed Unit (donor distributed Unit, donor DU) and a terminal, and due to a delay, in an existing IAB network, Radio Link Control (RLC) retransmission is limited to only two nodes of one backhaul Link (BH Link), and automatic retransmission of higher layer protocol retransmission between a Centralized Unit (CU) and the terminal is not implemented, so that 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) replication, the method has no requirement on the network structure and can realize the relative reduction of the equivalent redundancy code rate.
Introduction to network coding and decoding
(a) The sending node performs original data block segmentation:
an original data block P (original data) needs to be divided into K original data sub-blocks (source data segments) on average, so P can be expressed as:
P＝[p 1 p 2 … p K ]
wherein p is k Is a sub-block of the original data after partitioning, and p k Each element of (a) belongs to GF (2), which is a galois field.
(b) The transmitting node generates a coding matrix:
the coding matrix is as follows:
and N is the number of coded sub-blocks obtained by coding the K original data sub-blocks.
And, defining the added sum of each column of elements in the coding matrix M as "degree of freedom" d, the formula is:
the degree of freedom d follows a certain distribution which is dependent on K.
The generation rule of the nth (N belongs to 1 to N) column in the coding matrix is as follows:
first, randomly generating d according to the distribution of the degrees of freedom d n (representing the degree of freedom of the nth encoded packet);
let m k，n 1, wherein K is d taken randomly from 1 to K n The value of each number.
(c) And the transmitting node carries out coding:
C＝PM＝[c 1 c 2 … c N ]
wherein [ c 1 c 2 … c N ]Is N encoded sub-blocks.
(d) The forwarding node receives enough coding sub-blocks and decodes the coding sub-blocks
Both the transmitting and receiving ends need to have the original data sub-block number (i.e. the nth column vector in the coding matrix M corresponding to the nth coded packet) required for generating the coded packet. The forwarding node combines vectors corresponding to the received encoded sub-blocks into a matrix H, and when H satisfies a row full rank condition (rank (H) ═ K), it means that the currently received code is sufficient for decoding.
Taking out the column vectors forming the full rank of the row and the corresponding coding packets 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 redundancy transmission to improve the reliability of transmission and further improve the transmission delay, the required redundancy is different under different conditions, and generally, the required redundancy is obviously less than 100%.
Thirdly, an application mode related to network coding:
network coding and decoding can also be realized in a wireless communication Protocol stack, and one method can carry out network coding on a Protocol Data Unit (PDU), send a coding subblock to a forwarding node, then carry out network decoding on the forwarding node and recover the PDCP PDU; another method is applied to the IAB network, namely, a Backhaul Adaptation Protocol (BAP) PDU is cut into subblocks and network-coded, then the coded subblocks are sent to a target receiving IAB node through a Backhaul channel, and the target receiving IAB node performs network decoding after receiving the coded subblocks to recover the BAP PDU.
The network codec may be implemented between transport layers, for example, a sending node of an Internet Protocol (IP) packet performs network coding on the IP packet, and a forwarding node of the IP packet decodes the received network coded sub-block to recover the IP packet.
The network coding and decoding can also be realized between application layers, for example, a sending node application layer carries out network coding on a data block to be sent, and a forwarding node application layer carries out network decoding after receiving the coded sub-block to recover an original data packet.
Referring to fig. 1, a block diagram of a wireless communication system to which embodiments of the present application are applicable is shown. The wireless communication system includes a terminal 11 and a network side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11.
The network-side device 12 may be a Base Station or a core network, wherein the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receive Point (TRP), a radio access network node, or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.
A transmission method, a device, an apparatus and a readable storage medium provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 2, the present application provides a transmission method, where an execution subject of the method may be a sending node, and the method includes the specific steps of: step 201.
Step 201: the sending node sends indication information to the forwarding node, wherein the indication information is used for indicating the network coding information of the first data.
The first data (or referred to as a first data block) may be understood as data (or referred to as a data block) that the sending node sends to the forwarding node and the forwarding node needs to forward.
It will be appreciated that the sending node and the forwarding node may be separate two different physical devices or may be integrated on one physical device.
In one embodiment of the present application, the network coding information includes one or more of:
(1) information indicating that the first data has been network coded or information indicating that the first data has not been network coded;
for example, 1 bit indicates that "1" indicates information that the first data has been network-coded and "0" indicates information that the first data has not been network-coded.
(2) Information for network coding parameters or parameter changes to the first data;
for example, the information of parameter change may include, but is not limited to, information that reduces redundancy of network coding.
(3) Information for configuring the forwarding node to perform network coded transmission on the first data;
that is, the sending node may send the relevant information such as "original data block segmentation", "encoding matrix generation", and "encoding" to the forwarding node.
(4) Information for requesting the forwarding node to perform network coded transmission on the first data;
for example, the first data is not network coded at the sending node, and in order to avoid a loss of network coding gain, the sending node may request the forwarding node to perform network coding transmission on the first data.
(5) Information for requesting the forwarding node to stop network coded transmission of the first data;
for example, the first data may have been network coded at the sending node, and in order to avoid increasing redundancy of the data transmission, the sending node may request the forwarding node to stop network coded transmission of the first data.
Illustratively, a "1" indicates that the forwarding node is requested to stop network-coded transmission of the first data with a 1-bit indication.
(6) Information for requesting the forwarding node not to network code transmit the first data.
For example, the first data may already be network coded at the sending node, and in order to avoid increasing redundancy of data transmission, the sending node may request that the forwarding node not perform network coded transmission on the first data.
Illustratively, a "1" indicates that the forwarding node is requested not to network code the first data using a 1 bit indication.
In one embodiment of the present application, the sending node includes: a service server, a radio access network node or a terminal; the forwarding node includes: a radio access network node or terminal.
In one embodiment of the present application, a protocol layer of the sending node for generating or sending the network coding information of the first data includes: an application layer, a Transmission Control Protocol (TCP) layer, an Internet Protocol (IP) layer, a User Datagram Protocol (UDP) layer, a General Packet Radio Service Tunneling Protocol (GTP) layer, or a network coding Control layer.
In one embodiment of the present application, the first data is a traffic data flow, such as a Quality of Service (QoS) flow.
In an embodiment of the present application, the step of sending, by the sending node, the indication information to the forwarding node includes:
and the sending node sends at least part of parameters in the service quality parameter set of the first data to the forwarding node, wherein the at least part of parameters comprises the indication information.
In an embodiment of the present application, the step of sending, by the sending node, the indication information to the forwarding node includes:
if the sending node performs network coding on the first data, the sending node sends indication information to the forwarding node, wherein the network coding information indicated by the indication information comprises one or more of the following items: information for indicating that the first data has been network coded, information for requesting the forwarding node to stop network coded transmission of the first data, information for requesting the forwarding node not to network code transmit the first data;
alternatively, the first and second electrodes may be,
if the sending node does not perform network coding on the first data and the first data needs to be transmitted at the forwarding node in a network coding manner, the sending node sends indication information to the forwarding node, wherein the network coding information indicated by the indication information comprises one or more of the following items: the information indicating that the first data is not subjected to network coding, the information indicating that the first data is subjected to network coding or parameter change, the information configuring the forwarding node to perform network coding transmission on the first data, and the information requesting the forwarding node to perform network coding transmission on the first data.
In one embodiment of the present application, the method further comprises:
the sending node receives status report information from the forwarding node, where the status report information is used to request the sending node to stop network coding of the first data or request the sending node to change parameters of the network coding of the first data. In an embodiment of the present application, the service server includes: a Session Management Function (SMF), if the forwarding node includes a radio access network node, the step of sending, by the sending node, instruction information to the forwarding node includes:
and the SMF sends the indication information to the wireless Access network node through an Access and Mobility Management Function (AMF).
In an embodiment of the present application, the sending node includes a terminal, and the step of sending, by the sending node, the indication information to the forwarding node includes:
the application layer or the IP layer of the terminal sends the indication information to the wireless protocol layer of the terminal; and/or the wireless protocol layer of the terminal sends the indication information to a wireless network access node.
In an embodiment of the present application, the step of sending the indication information to a radio protocol layer of the terminal by an application layer or an IP layer of the terminal includes:
and the application layer or the IP layer of the terminal sends the indication information to the wireless protocol layer of the terminal through an adaptation layer, and the adaptation layer is used for transmitting the indication information between the application layer or the IP layer and the transmission control protocol layer.
In one embodiment of the present application, the transmitting node includes: the terminal, the forwarding node includes: the terminal, the method also includes:
and the application layer or the IP layer of the terminal sends second information to the transmission control protocol layer of the terminal, wherein the second information is used for requesting the transmission control protocol layer to transmit the first data through network coding.
In the embodiment of the application, the network coding information can be interacted between the sending node and the forwarding node, and the network coding efficiency is improved.
Referring to fig. 3, the present application provides a transmission method, where an execution subject of the method may be a forwarding node, and the method includes the specific steps of:
step 301: the forwarding node receives indication information from the sending node, wherein the indication information is used for indicating the network coding information of the first data.
In one embodiment of the present application, the network coding information includes one or more of:
(1) information indicating that the first data has been network coded or information indicating that the first data has not been network coded;
(2) information for network coding parameters or parameter changes to the first data;
(3) information for configuring the forwarding node to perform network coded transmission on the first data;
(4) information for requesting the forwarding node to perform network coded transmission on the first data;
(5) information for requesting the forwarding node to stop network coded transmission of the first data;
(6) information for requesting the forwarding node not to network code transmit the first data.
In one embodiment of the present application, the transmitting node includes: a service server, a radio access network node or a terminal; the forwarding node includes: a radio access network node or terminal.
In one embodiment of the present application, the protocol layer of the receiving node receiving the network coding information of the first data includes: an application layer, a TCP layer, an IP layer, a UDP layer, a GTP layer or a network coding control layer.
In one embodiment of the present application, the first data is a traffic data stream.
In an embodiment of the present application, the step of the forwarding node receiving the indication information from the sending node includes:
the forwarding node receives at least part of parameters in the service quality parameter set of the first data from the sending node, wherein the at least part of parameters comprise the indication information.
In one embodiment of the present application, the method further comprises:
and the forwarding node sends status report information to the sending node, wherein the status report information is used for requesting the sending node to stop network coding of the first data or requesting the sending node to change parameters of the network coding of the first data.
In an embodiment of the present application, the forwarding node includes a radio access network node, and the step of receiving, by the forwarding node, the indication information from the sending node includes:
and the wireless access network node receives the indication information sent by the SMF through the AMF.
Alternatively, the first and second electrodes may be,
and the radio access network node receives the indication information sent by an application layer or an IP layer of the terminal through a transmission control protocol layer of the terminal.
In one embodiment of the present application, the transmitting node includes: the terminal, the forwarding node includes: the terminal, the method also includes:
and the transmission control protocol layer of the terminal receives second information sent by an application layer or an IP layer of the terminal, wherein the second information is used for requesting the transmission control protocol layer to transmit the first data through network coding.
In the embodiment of the application, network coding information can be interacted between the sending node and the forwarding node, the efficiency of network coding is improved, and double network coding is avoided.
Referring to fig. 4, the present application provides a transmission method, which includes the following specific steps:
step 401: the sending node sends indication information to the forwarding node, wherein the indication information is used for indicating the network coding information of the first data
Step 402: and the forwarding node sends status report information to the sending node, wherein the status report information is used for requesting the sending node to stop network coding of the first data or requesting the sending node to change parameters of the network coding of the first data.
In the embodiment of the application, network coding information can be interacted between the sending node and the forwarding node, the efficiency of network coding is improved, and double network coding is avoided.
Embodiments of the present application will be described below with reference to embodiment one to embodiment three.
The first implementation mode comprises the following steps: and the core network node and the wireless access network node exchange indication information.
Referring to fig. 5, the core network node directly or indirectly sends the indication information (or referred to as network coding indication information) indicating whether the Quality of Service (QoS) flow (flow) can be transmitted by network coding to the radio access network node, and the radio access network node configures the network coding according to the indication information.
alternatively, the indication information may be pre-configured to the radio access network node as a parameter of a QoS configuration (profile) of the quality of service flow.
Optionally, the indication information comprises one or more of:
(1) first information indicating whether network coding is required;
the first information indicates that the wireless access network node needs to carry out network coding transmission on the QoS flow;
(2) second information indicating whether network coding is possible;
the second information indicates the wireless access network to autonomously determine whether to carry out network coding transmission on the QoS flow;
(3) third information indicating whether the data has been network coded for transmission on an upper layer;
the core network Node may be an SMF, the radio access network Node may be a Central Unit (CU) or a Next generation base station (gNB), and the SMF may send, to the CU/gNB, the indication information indicating whether the QoS flow may be transmitted by network coding through the AMF.
In particular, the SMF may indicate, through the AMF, a parameter configuration of the QoS flow network coding, for example, the number of coding sub-blocks into which a data packet is divided, coding codebook information, and the like, and instruct the radio access network to perform network coding transmission on the QoS flow according to the network configuration parameter.
The second embodiment: and the upper layer of the UE and the transmission control protocol exchange indication information.
Referring to fig. 6, if an upper layer (e.g., an application layer or an IP layer) of the UE already performs network coding on data, the upper layer notifies a transmission Control protocol layer (e.g., a Radio Resource Control (RRC) layer) of information that the data has been network coded, and when the transmission Control protocol layer initiates a data transmission request to a Radio access network node (e.g., CU/gNB), the transmission Control protocol layer informs the Radio access network node that the QoS flow of the service has been network coded. If the upper layer (e.g., application layer or IP layer) of the UE does not network code the data, the traffic QoS flow non-network coded information is sent to the transmission control protocol layer, or no information about network coding is sent. The upper layer protocol may be an application layer, a transmission control protocol, TCP, layer, an internet protocol, IP, layer, a user datagram protocol, UDP, layer, a general packet radio service, tunneling protocol, GTP, layer, or a network coding control layer.
If the transmission control protocol layer of the UE receives the information of the network code from an upper layer (such as an application layer or an IP layer), determining whether to request to configure the network code transmission in a wireless access network according to the received information of the network code and the transmission quality of the wireless network; if the radio access network node receives the information of the network code from the UE, it may autonomously determine whether to configure network code transmission within the radio access network.
Optionally, an Adaptation layer may be added between the upper layer and the tcp layer, and the Adaptation layer is used to transfer information about network coding between the upper layer and the tcp layer, and may be a sub-module of a Service Data Adaptation Protocol (SDAP) layer, or may be a separate module.
Alternatively, the upper layer may request the transmission control protocol layer for network coded transmission of the data. For example, an application may request the tcp layer for network coding transmission when transmitting more important data information, and the tcp layer may send a response message to confirm the network coding information.
It is to be understood that the embodiments of the present application can be applied to data transmission between a UE and a UE, in addition to transmission between the UE and a network node. When applied to data transmission between a UE and the UE, a transmission control protocol layer of the UE decides whether the transmission control protocol layer performs network coding according to whether an upper layer (e.g., an application layer or an IP layer) performs network coding, including but not limited to: UE-to-UE data transmission over a third Generation Partnership Project (3 GPP) sidelink, UE-to-UE data transmission over a sidelink relay, UE-to-UE data transmission over a Wireless Local Area Network (WLAN)/blueTooth (blue tooth), etc.
The third embodiment is as follows: and a congestion control mechanism based on the coordination of an upper layer and a transmission control protocol layer.
Referring to fig. 7, if an upper layer (e.g., an application layer or an IP layer) network-encodes data, when congestion occurs in a wireless network, a transmission control protocol layer may transmit status report information to the upper layer (e.g., the application layer or the IP layer), which may be used to explicitly or implicitly request the upper layer (e.g., the application layer or the IP layer) to stop network encoding or reduce redundancy of network encoding.
If the network coding is performed by an upper layer (e.g., application layer or IP layer) of the UE, the status report information may be reported to the upper layer (e.g., application layer or IP layer) of the UE using a transmission control protocol of the UE.
For the procedure of reporting by the transmission control protocol layer of the UE to the upper layer (e.g., application layer or IP layer) of the UE, see embodiment two.
Alternatively, if the network coding is controlled by a core network node (e.g. AMF/SMF), the core network node is reported by a radio access network node (e.g. gNB or CU). The core network node may respond with a response message that may contain network coding adjustment information (i.e., hold/stop network coding or reduce redundancy of network coding).
Referring to fig. 8, an embodiment of the present application provides a transmission apparatus, which is applied to a sending node, where the apparatus 800 includes:
a first sending module 801, configured to send, to the forwarding node, indication information, where the indication information is used to indicate network coding information of the first data.
In one embodiment of the present application, the network coding information includes one or more of:
(1) information indicating that the first data has been network coded or information indicating that the first data has not been network coded;
(2) information for network coding parameters or parameter changes to the first data;
(3) information for configuring the forwarding node to perform network coded transmission on the first data;
(4) information for requesting the forwarding node to perform network coded transmission on the first data;
(5) information for requesting the forwarding node to stop network coded transmission of the first data;
(6) information for requesting the forwarding node not to network code transmit the first data.
In one embodiment of the present application, the transmitting node includes: a service server, a radio access network node or terminal; the forwarding node comprises: a radio access network node or terminal.
In one embodiment of the present application, a protocol layer of the sending node for generating or sending the network coding information of the first data includes: an application layer, a TCP layer, an IP layer, a UDP layer, a GTP layer or a network coding control layer.
In one embodiment of the present application, the first data is a traffic data stream.
In an embodiment of the present application, the first sending module 801 is further configured to:
and sending at least part of parameters in the service quality parameter set of the first data to the forwarding node, wherein the at least part of parameters comprises the indication information.
In an embodiment of the present application, the first sending module 801 is further configured to: if the sending node carries out network coding on the first data, sending indication information to the forwarding node, wherein the network coding information indicated by the indication information comprises one or more of the following items: the forwarding node is configured to receive a request from the forwarding node to stop network-coded transmission of the first data, and to request the forwarding node not to network-coded transmit the first data.
In an embodiment of the present application, the first sending module 801 is further configured to: if the sending node does not perform network coding on the first data and the first data needs to perform network coding transmission at the forwarding node, sending indication information to the forwarding node, where the network coding information indicated by the indication information includes one or more of the following items: the information indicating that the first data is not subjected to network coding, the information indicating that the first data is subjected to network coding or parameter change, the information indicating that the forwarding node is configured to perform network coding transmission on the first data, and the information indicating that the forwarding node is requested to perform network coding transmission on the first data.
In one embodiment of the present application, the apparatus 800 further comprises:
a first receiving module, configured to receive status report information from the forwarding node, where the status report information is used to request the sending node to stop network coding of the first data or request the sending node to change a parameter of the network coding of the first data.
In one embodiment of the present application, the service server includes: SMF, the forwarding node comprises a radio access network node, and the first sending module 801 is further configured to: and sending the indication information to the wireless access network node through the AMF.
In one embodiment of the present application, the transmitting node includes: the first sending module 801 is further configured to: and sending the indication information to a wireless protocol layer of the terminal through an application layer or an IP layer of the terminal.
In one embodiment of the present application, the transmitting node includes: the first sending module 801 is further configured to: and sending the indication information to a wireless protocol layer of the terminal through an adaptation layer by utilizing an application layer or an IP layer of the terminal, wherein the adaptation layer is used for transmitting the indication information between the application layer or the IP layer and the transmission control protocol layer.
In one embodiment of the present application, the sending node includes: the terminal, the forwarding node includes: in the terminal, the first sending module 801 is further configured to: and sending second information to a transmission control protocol layer of the terminal through an application layer or an IP layer of the terminal, wherein the second information is used for requesting the transmission control protocol layer to transmit the first data through network coding.
The device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not described here again.
Referring to fig. 9, an embodiment of the present application provides a transmission apparatus, which is applied to a forwarding node, where the apparatus 900 includes:
a second receiving module 901, configured to receive indication information from a sending node, where the indication information is used to indicate network coding information of the first data.
In one embodiment of the present application, the network coding information includes one or more of:
(1) information indicating that the first data has been network coded or information indicating that the first data has not been network coded;
(2) information for network coding parameters or parameter changes to the first data;
(3) information for configuring the forwarding node to perform network coded transmission on the first data;
(4) information for requesting the forwarding node to perform network coded transmission on the first data;
(5) information for requesting the forwarding node to stop network coded transmission of the first data;
(6) information for requesting the forwarding node not to network code transmit the first data.
In one embodiment of the present application, the transmitting node includes: a service server, a radio access network node or terminal;
the forwarding node includes: a radio access network node or terminal.
In one embodiment of the present application, the protocol layer of the receiving node receiving the network coding information of the first data includes: an application layer, a TCP layer, an IP layer, a UDP layer, a GTP layer or a network coding control layer.
In one embodiment of the present application, the first data is a traffic data stream.
In an embodiment of the present application, the second receiving module 901 is further configured to:
receiving at least part of parameters in the set of quality of service parameters of the first data from a sending node, wherein the at least part of parameters comprises the indication information.
In one embodiment of the present application, the apparatus 900 further comprises:
a second sending module 901, configured to send status report information to the sending node, where the status report information is used to request the sending node to stop performing network coding on the first data, or request the sending node to change a parameter of the network coding of the first data.
In an embodiment of the present application, the forwarding node includes a radio access network node, and the second receiving module 901 is further configured to: receiving the indication information sent by the SMF through the AMF; or, the indication information sent by the application layer or the IP layer of the terminal is received by a transmission control protocol layer of the terminal.
In one embodiment of the present application, the transmitting node includes: the terminal, the forwarding node includes: the terminal, the second receiving module 901 is further configured to: and receiving second information sent by an application layer or an IP layer of the terminal, wherein the second information is used for requesting the transmission control protocol layer to transmit the first data through network coding.
The device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 3, and achieve the same technical effect, and for avoiding repetition, details are not described here again.
The transmission device in the embodiment of the present application may be a device or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a network side device. The device or the electronic equipment may be a base station, or may be other network side equipment.
The embodiment of the present application further provides a terminal, which includes a processor and a communication interface, where the processor is configured to send indication information to a forwarding node, where the indication information is used to indicate network coding information of first data, or receive indication information from a sending node, and the indication information is used to indicate network coding information of the first data. The terminal embodiment corresponds to the terminal-side method embodiment, and all implementation processes and implementation manners of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect.
Specifically, fig. 10 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application, where the terminal 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, a processor 1010, and the like.
Those skilled in the art will appreciate that terminal 1000 can further include a power supply (e.g., a battery) for powering the various components, and the power supply can be logically coupled to processor 1010 via a power management system, such that functions of managing charging, discharging, and power consumption are performed via the power management system. The terminal structure shown in fig. 10 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.
It should be understood that in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
In this embodiment of the application, the radio frequency unit 1001 receives downlink data from a network side device and then processes the downlink data to the processor 1010; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the Memory 1009 may include a high-speed random access Memory, and may further include a nonvolatile Memory, which may be a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (erasab PROM, EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
The terminal provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not described here again.
The embodiment of the present application further provides a network side device, which includes a processor and a communication interface, where the communication interface is configured to send indication information to a forwarding node, where the indication information is used to indicate network coding information of first data, or receive indication information from a sending node, and the indication information is used to indicate network coding information of the first data. The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.
Specifically, the embodiment of the application further provides a network side device. As shown in fig. 11, the network-side device 1100 includes: antenna 1101, radio frequency device 1102, baseband device 1103. An antenna 1101 is connected to the radio frequency device 1102. In the uplink direction, the rf device 1102 receives information via the antenna 1101, and sends the received information to the baseband device 1103 for processing. In the downlink direction, the baseband device 1103 processes information to be transmitted and transmits the processed information to the rf device 1102, and the rf device 1102 processes the received information and transmits the processed information through the antenna 1101.
The above-mentioned band processing means may be located in the baseband apparatus 1103, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 1103, where the baseband apparatus 1103 includes a processor 1104 and a memory 1105.
The baseband apparatus 1103 may include at least one baseband board, for example, and a plurality of chips are disposed on the baseband board, as shown in fig. 11, where one chip, for example, the processor 1104, is connected to the memory 1105 and calls the program in the memory 1105 to perform the network device operations shown in the above method embodiments.
The baseband apparatus 1103 may further include a network interface 1106, such as a Common Public Radio Interface (CPRI), for exchanging information with the rf apparatus 1102.
Specifically, the network side device in the embodiment of the present application further includes: the instructions or programs stored in the memory 1105 and capable of being executed on the processor 1104, the processor 1104 invokes the instructions or programs in the memory 1105 to execute the methods executed by the modules shown in fig. 9, and achieve the same technical effects, which are not described herein for avoiding repetition.
Embodiments of the present application also provide a computer program/program product stored in a non-volatile storage medium, which is executed by at least one processor to implement the steps of the method of processing as described in fig. 2-3.
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 embodiments shown in fig. 2 to fig. 3, 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 execute a program or an instruction to implement each process of the method embodiments shown in fig. 2 to 4, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
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.
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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of 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 involved, e.g., the methods described may be performed in an order different than 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 computer 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 embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (29)
1. A method of transmission, comprising:
the sending node sends indication information to the forwarding node, wherein the indication information is used for indicating the network coding information of the first data.
2. The method of claim 1, wherein the network coding information comprises one or more of:
information indicating that the first data has been network encoded or not network encoded;
information for network coding parameters or parameter changes to the first data;
information for configuring the forwarding node to perform network coded transmission on the first data;
information for requesting the forwarding node to perform network coded transmission on the first data;
information for requesting the forwarding node to stop network coded transmission of the first data;
information for requesting the forwarding node not to network code transmit the first data.
3. The method of claim 1,
the transmitting node includes: a service server, a radio access network node or a terminal;
the forwarding node includes: a radio access network node or terminal.
4. The method according to claim 1 or 3, wherein the protocol layer of the network coding information of the first data generated or transmitted by the transmitting node comprises: an application layer, a transmission control protocol, TCP, Internet protocol, IP, user datagram protocol, UDP, general packet radio service, tunneling protocol, GTP, or a network coding control layer.
5. The method of claim 1, wherein the first data is a traffic data stream.
6. The method of claim 1, wherein the step of the sending node sending the indication information to the forwarding node comprises:
and the sending node sends at least part of parameters in the service quality parameter set of the first data to the forwarding node, wherein the at least part of parameters comprises the indication information.
7. The method of claim 1, wherein the step of the sending node sending the indication information to the forwarding node comprises:
if the sending node performs network coding on the first data, the sending node sends indication information to the forwarding node, wherein the network coding information indicated by the indication information comprises one or more of the following items: information for indicating that the first data has been network coded, information for requesting the forwarding node to stop network coded transmission of the first data, information for requesting the forwarding node not to network code transmit the first data;
alternatively, the first and second liquid crystal display panels may be,
if the sending node does not perform network coding on the first data and the first data needs to be transmitted at the forwarding node in a network coding manner, the sending node sends indication information to the forwarding node, wherein the network coding information indicated by the indication information comprises one or more of the following items: the information indicating that the first data is not subjected to network coding, the information indicating that the first data is subjected to network coding or parameter change, the information configuring the forwarding node to perform network coding transmission on the first data, and the information requesting the forwarding node to perform network coding transmission on the first data.
8. The method of claim 1, further comprising:
the sending node receives status report information from the forwarding node, where the status report information is used to request the sending node to stop network coding of the first data or request the sending node to change a parameter of the network coding of the first data.
9. The method of claim 3, wherein the service server comprises: a session management function SMF, where the forwarding node includes a radio access network node, and the step of sending, by the sending node, the indication information to the forwarding node includes:
and the SMF sends the indication information to the wireless access network node through an access and mobility management function (AMF).
10. The method according to claim 4, wherein the sending node is a terminal, and the step of sending the indication information to the forwarding node by the sending node comprises:
the application layer or the IP layer of the terminal sends the indication information to the wireless protocol layer of the terminal;
and/or the presence of a gas in the gas,
and the wireless protocol layer of the terminal sends the indication information to a wireless network access node.
11. The method according to claim 10, wherein the step of sending the indication information to the radio protocol layer of the terminal by the application layer or the IP layer of the terminal comprises:
and the application layer or the IP layer of the terminal sends the indication information to the wireless protocol layer of the terminal through an adaptation layer, and the adaptation layer is used for transmitting the indication information between the application layer or the IP layer and the transmission control protocol layer.
12. The method of claim 4, wherein the sending node comprises: the terminal, the forwarding node includes: the terminal, the method also includes:
and the application layer or the IP layer of the terminal sends second information to the transmission control protocol layer of the terminal, wherein the second information is used for requesting the transmission control protocol layer to transmit the first data through network coding.
13. A method of transmission, comprising:
the forwarding node receives indication information from the sending node, wherein the indication information is used for indicating the network coding information of the first data.
14. The method of claim 13, wherein the network coding information comprises one or more of:
information indicating whether the first data has been network coded or not;
information for network coding parameters or parameter changes to the first data;
information for configuring the forwarding node to perform network coded transmission on the first data;
information for requesting the forwarding node to perform network coded transmission on the first data;
information for requesting the forwarding node to stop network coded transmission of the first data;
information for requesting the forwarding node not to network code transmit the first data.
15. The method of claim 13,
the transmitting node includes: a service server, a radio access network node or a terminal;
the forwarding node includes: a radio access network node or terminal.
16. The method according to claim 14 or 15, wherein the receiving node receiving the protocol layer of the network coding information of the first data comprises: an application layer, a TCP layer, an IP layer, a UDP layer, a GTP layer or a network coding control layer.
17. The method of claim 13, wherein the first data is a traffic data stream.
18. The method of claim 13, wherein the step of the forwarding node receiving the indication information from the sending node comprises:
the forwarding node receives at least part of parameters in the service quality parameter set of the first data from the sending node, wherein the at least part of parameters comprise the indication information.
19. The method of claim 13, further comprising:
and the forwarding node sends status report information to the sending node, wherein the status report information is used for requesting the sending node to stop network coding of the first data or requesting the sending node to change parameters of the network coding of the first data.
20. The method according to claim 15 or 16, wherein the forwarding node comprises a radio access network node, and wherein the step of the forwarding node receiving the indication information from the sending node comprises:
the wireless access network node receives the indication information sent by the SMF through the AMF;
alternatively, the first and second electrodes may be,
and the wireless access network node receives the indication information sent by an application layer or an IP layer of the terminal through a transmission control protocol layer of the terminal.
21. The method of claim 16, wherein the sending node comprises: the terminal, the forwarding node includes: the terminal, the method also includes:
and the transmission control protocol layer of the terminal receives second information sent by an application layer or an IP layer of the terminal, wherein the second information is used for requesting the transmission control protocol layer to transmit the first data through network coding.
22. A transmission apparatus applied to a sending node, comprising:
a first sending module, configured to send indication information to the forwarding node, where the indication information is used to indicate network coding information of the first data.
23. The apparatus of claim 22, wherein the network coding information comprises one or more of:
information indicating that the first data has been network encoded or not network encoded;
information for network coding parameters or parameter changes to the first data;
information for configuring the forwarding node to perform network coded transmission on the first data;
information for requesting the forwarding node to perform network coded transmission on the first data;
information for requesting the forwarding node to stop network coded transmission of the first data;
information for requesting the forwarding node not to network code transmit the first data.
24. The apparatus of claim 22, wherein the sending node comprises: a service server, a radio access network node or a terminal; the forwarding node includes: a radio access network node or terminal.
25. The apparatus of claim 22, wherein the protocol layer for the sending node to generate or send the network coding information of the first data comprises: an application layer, a TCP layer, an IP layer, a UDP layer, a GTP layer or a network coding control layer.
26. A transmission apparatus applied to a forwarding node, comprising:
and a second receiving module, configured to receive indication information from the sending node, where the indication information is used to indicate network coding information of the first data.
27. A terminal, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of any one of claims 1 to 21.
28. A network-side device, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of any one of claims 1 to 21.
29. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the method according to any one of claims 1 to 21.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335715.2A CN115134047A (en) | 2021-03-29 | 2021-03-29 | Transmission method, device, equipment and readable storage medium |
| PCT/CN2022/082215 WO2022206475A1 (en) | 2021-03-29 | 2022-03-22 | Transmission methods, apparatus and device, and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335715.2A CN115134047A (en) | 2021-03-29 | 2021-03-29 | Transmission method, device, equipment and readable storage medium |
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| CN115134047A true CN115134047A (en) | 2022-09-30 |
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| CN202110335715.2A Pending CN115134047A (en) | 2021-03-29 | 2021-03-29 | Transmission method, device, equipment and readable storage medium |
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| WO (1) | WO2022206475A1 (en) |
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