CN108809549B - Data transmission method and equipment - Google Patents
Data transmission method and equipment Download PDFInfo
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- CN108809549B CN108809549B CN201810369203.6A CN201810369203A CN108809549B CN 108809549 B CN108809549 B CN 108809549B CN 201810369203 A CN201810369203 A CN 201810369203A CN 108809549 B CN108809549 B CN 108809549B
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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
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
Abstract
The embodiment of the invention provides a method and equipment for transmitting data, which are applied to the technical field of communication and can solve the problem of high time delay of data transmission. The scheme can be applied to a transmitting device and comprises the following steps: generating a first data packet and a second data packet according to an initial data packet to be sent, wherein the target load data of the initial data packet, the target load data of the first data packet and the target load data of the second data packet are the same, and the target load data of one data packet is user data in the data packet; sending a first data packet to a receiving device through a first network; and sending the second data packet to the receiving device through a second network, wherein the first network is different from the second network.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for transmitting data.
Background
With the development of communication technology, the intelligent degree of terminals such as mobile phones and tablet computers is continuously improved, so that multiple functions of the terminals are realized. Some services in the terminal have high requirements on network performance, and services such as network online games, red packet robbery or commodity robbery require network delay as low as possible.
The terminal may be connected to various types of networks, such as a Broadband network (Broadband network) based on a network cable, a Broadband network (WIFI) based on Wireless-Fidelity (Wireless-Fidelity), or a mobile network based on a Subscriber Identity Module (SIM) card in the terminal.
There is a problem in the prior art that a terminal generally uses a form of network to transmit data with a network device (e.g., a server) during the same time period. Thus, when the network used by the terminal is affected by the external environment, the delay of data transmission is high.
Disclosure of Invention
The embodiment of the invention provides a method and equipment for transmitting data, which aim to solve the problem of higher time delay of data transmission.
In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:
in a first aspect, an embodiment of the present invention provides a method for transmitting data, where the method is applied to a sending device, and the method includes: generating a first data packet and a second data packet according to an initial data packet to be sent, wherein the target load data of the initial data packet, the target load data of the first data packet and the target load data of the second data packet are the same, and the target load data of one data packet is user data in the data packet; sending a first data packet to a receiving device through a first network; and sending the second data packet to the receiving device through a second network, wherein the first network is different from the second network.
In a second aspect, an embodiment of the present invention further provides a method for transmitting data, where the method is applied to a receiving device, and the method includes: receiving a first data packet sent by sending equipment through a first network, wherein the first data packet comprises a first identifier; receiving a second data packet sent by the sending device through a second network, wherein the second data packet comprises a second identifier, and the first network is different from the second network; and under the condition that the first identifier and the second identifier are the same or the first identifier and the second identifier are preset corresponding identifiers, discarding the second data packet.
In a third aspect, an embodiment of the present invention further provides a sending device, where the sending device includes: the device comprises a generating module and a sending module; the generating module is used for generating a first data packet and a second data packet according to an initial data packet to be sent, the target load data of the initial data packet, the target load data of the first data packet and the target load data of the second data packet are all the same, and the target load data of one data packet is user data in the data packet; the sending module is used for sending the first data packet generated by the generating module to the receiving equipment through a first network; and sending the second data packet generated by the generation module to the receiving equipment through a second network, wherein the first network is different from the second network.
In a fourth aspect, an embodiment of the present invention further provides a receiving device, where the receiving device includes: a receiving module and a discarding module; the receiving module is used for receiving a first data packet sent by the sending equipment through a first network, wherein the first data packet comprises a first identifier; receiving a second data packet sent by the sending device through a second network, wherein the second data packet comprises a second identifier, and the first network is different from the second network; and the discarding module is used for discarding the second data packet received by the receiving module under the condition that the first identifier is the same as the second identifier or the first identifier and the second identifier are preset corresponding identifiers.
In a fifth aspect, an embodiment of the present invention provides a sending device, including a processor, a memory, and a computer program stored on the memory and operable on the processor, where the computer program, when executed by the processor, implements the steps of the method for transmitting data according to the first aspect.
In a sixth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method for transmitting data according to the first aspect.
In a seventh aspect, an embodiment of the present invention provides a receiving device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and when executed by the processor, the computer program implements the steps of the method for transmitting data according to the second aspect.
In an eighth aspect, the embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method for transmitting data according to the second aspect.
In the embodiment of the present invention, because the sending device may send the first data packet and the second data packet with the same target load data through different networks, respectively, the receiving device may receive the first data packet and the second data packet, respectively, and determine the data packet (e.g., the first data packet) from the network with the lower transmission delay. Therefore, even if the external environment causes the data transmission delay of one network to be larger, the receiving equipment can also receive and determine the data packet from the other network with lower transmission delay, and further the problem of higher data transmission delay can be solved.
Drawings
Fig. 1 is a schematic diagram of a transmission system architecture for transmitting data according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for transmitting data according to an embodiment of the present invention;
fig. 3 is a second flowchart of a method for transmitting data according to an embodiment of the present invention;
fig. 4 is a third schematic flow chart of a method for transmitting data according to an embodiment of the present invention;
fig. 5 is a fourth flowchart illustrating a method for transmitting data according to an embodiment of the present invention;
fig. 6 is a fifth flowchart illustrating a method for transmitting data according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a possible sending device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a possible receiving device according to an embodiment of the present invention;
fig. 9 is a schematic hardware structure diagram of a sending device according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a hardware structure of a receiving device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
It should be noted that "/" in this context means "or", for example, A/B may mean A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. "plurality" means two or more than two.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first packet and the second packet, etc. are for distinguishing different packets, rather than for describing a particular order of the packets.
It should be noted that the embodiment of the present invention may be applied to a scenario in which data is transmitted between two devices through a network.
Specifically, one of the two devices provided in the embodiment of the present invention may be a terminal device such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), an intelligent watch, and an intelligent bracelet, or the terminal device may also be another type of terminal device. The other device of the two devices provided by the embodiment of the present invention may be a server, a New radio base station (New eNB) or a Wireless Local Area Network (WLAN) Access Point (AP) or other network devices.
It is to be understood that when a device transmits data, the device may be referred to as a transmitting device; when a device receives data, the device may be referred to as a receiving device.
It should be noted that, in the method for transmitting data according to the embodiment of the present invention, an execution subject applied to the sending device may be the sending device, or a Central Processing Unit (CPU) of the sending device, or a control module in the sending device for executing the method for transmitting data. In the embodiment of the present invention, a method for transmitting data performed by a sending device is taken as an example, and the method for transmitting data provided in the embodiment of the present invention is described. Similarly, the execution subject applied to the receiving device takes the receiving device as an example for the method for transmitting data provided by the embodiment of the present invention.
As shown in fig. 1, in an application scenario of the embodiment of the present invention, a transmission system architecture for transmitting data provided in the embodiment of the present invention may include: a transmitting device 10 and a receiving device 20. The transmitting device 10 establishes a connection with the receiving device 20 through a network and transmits data.
As an example, fig. 1 illustrates a method for transmitting data according to an embodiment of the present invention, where the sending device 10 is a mobile phone and the receiving device 20 is a server.
Wherein the sending device 10 and the receiving device 20 may simultaneously transmit data over one or more forms of network. For example, Broadband network based on network cable (Broadband network), Broadband network based on Wireless-Fidelity (WIFI), or mobile network based on Subscriber Identity Module (SIM) card in the transmitting device.
Specifically, the sending device 10 may implement data transmission with the receiving device 20 in a network through a network adapter provided in itself or an external adapter. The network in which the sending device 10 and the receiving device 20 transmit data may include network devices such as repeaters, bridges, routers, gateways, firewalls, switches, and the like, that is, the sending device 10 may transmit data with the receiving device 20 through these network devices.
According to the method and the device for transmitting data provided by the embodiment of the invention, the sending device can copy one data packet into two identical data packets and respectively transmit the two data packets to the receiving device through different networks. Therefore, the receiving device can be enabled to preferentially process the data packet received in the network with lower network delay. Therefore, the problem of high data transmission delay between the sending equipment and the receiving equipment can be solved.
Specifically, as shown in table 1, it is an architectural list of internet protocol models of existing broadband networks and mobile networks.
TABLE 1
Among them, the Open System Interconnection (OSI) divides a computer network architecture (architecture) into the following seven layers: application layer, presentation layer, session layer, transport layer, network layer, data link layer.
The Transmission Control Protocol/Internet Protocol (TCP/IP) is a generic term for a group of protocols, which also includes a number of protocols, forming a TCP/IP Protocol cluster. The TCP/IP protocol cluster is divided into four layers, with IP at the second layer of the protocol cluster (corresponding to the third layer of OSI) and TCP at the third layer of the protocol cluster (corresponding to the fourth layer of OSI). The TCP/IP communication protocol employs a 4-layer hierarchy, each layer calling the network provided by its next layer to fulfill its own requirements. The 4 layers are respectively: an application layer, a transport layer, a network layer, and a data link layer.
The application layer is a layer for communication between applications, and the corresponding Network Protocol may be a hypertext Transfer Protocol (HTTP), a Network File System (NFS), a File Transfer Protocol (FTP), Simple Mail Transfer (SMTP), a remote Network access Protocol (Telnet), or the like. The transport layer provides data transfer services between nodes, such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), and the TCP and UDP add Transmission data to a packet and transmit it to the next layer, which is responsible for transmitting data and determining that data has been sent to and received. The network layer is responsible for providing basic data packet transmission function to allow each data packet to reach the destination host, and the corresponding network Protocol may be, for example, Internet Protocol (IP). The Data link layer is used for managing the actual Network media, and defines how to use the actual Network to transmit Data, such as Ethernet (Ethernet) and Public Data Network (PDN).
Similarly, mobile networks divide the computer network architecture (architecture) into an application layer, a transport layer, a network layer, and a data link layer.
In the existing broadband and mobile internet protocol models, the network layer and the following layers are collectively referred to as a data link layer (including a seven-layer/four-layer network model and a mobile network model), and the transport layer and the above layers are collectively referred to as an application layer. Namely, in the TCP/IP four-layer model, the "application layer" described in the following embodiments also includes the application layer/presentation layer/session layer in the seven-layer protocol.
The method for transmitting data according to the embodiment of the present invention is described in detail below with reference to the flowchart of the method for transmitting data shown in fig. 2. Wherein, although a logical order of methods of transmitting data provided by embodiments of the present invention is illustrated in method flow diagrams, in some cases, the steps shown or described may be performed in an order different than here. For example, the method of transmitting data shown in fig. 2 may include steps 201-205:
step 201, a sending device generates a first data packet and a second data packet according to an initial data packet to be sent.
And the target load data of the initial data packet, the first data packet and the second data packet are the same.
The data Packet is also called a Packet (Packet), and is a unit of data in data transmission by the TCP/IP protocol. Specifically, the TCP/IP protocol operates at the third layer (network layer) and the fourth layer (transport layer) of the OSI model, and the frames operate at the second layer (data link layer). The content of the upper layer is transmitted by the content of the lower layer, i.e. the "packet" is contained in a "frame".
It will be appreciated that the transmitting device may encapsulate user data to be transmitted into one or more data packets. Wherein, one data packet may comprise a packet header and target load data; the header of a packet includes headers (e.g., TCP headers) added at various layers in the network model, and the target payload data of a packet is the user data transmitted by the packet.
Step 202, the sending device sends a first data packet to the receiving device through the first network.
Step 203, the receiving device receives the first data packet sent by the sending device through the first network.
Illustratively, the first network may be a WIFI-based broadband network (denoted as network 1).
And step 204, the sending device sends the second data packet to the receiving device through the second network.
Wherein the first network is different from the second network.
Specifically, the first network and the second network may be the same or different in form. For example, the second network is another WIFI-based broadband network (denoted as network 2), or the second network is a network cable-based broadband network (denoted as network 3).
Step 205, the receiving device receives the second data packet sent by the sending device through the second network.
It will be appreciated that in general the delays of data transmission in the two networks are different, i.e. the data transmission delay in one of the two networks is lower than the data transmission delay in the other network.
It should be noted that, in the method for transmitting data according to the embodiment of the present invention, because the sending device may send the first data packet and the second data packet with the same target load data through different networks, respectively, the receiving device may receive the first data packet and the second data packet, respectively, and determine the data packet (e.g., the first data packet) from the network with the lower transmission delay. Therefore, even if the external environment causes the data transmission delay of one network to be larger, the receiving equipment can also receive and determine the data packet from the other network with lower transmission delay, and further the problem of higher data transmission delay can be solved.
In a possible implementation manner, in the method for transmitting data provided in the embodiment of the present invention, the step 201 may include steps 201a to 201 c:
step 201a, the sending device copies the initial data packet into a third data packet and a fourth data packet at an application layer or a transmission layer.
Wherein the third data packet is the same as the fourth data packet.
Specifically, the target load data of the initial packet, the third packet, and the fourth packet are all the same. That is, the target load data of the first data packet, the second data packet, the third data packet and the fourth data packet are all the same. The header of the third packet is the same as the header of the fourth packet.
Step 201b, the sending device sets the header of the third data packet as the first packet header, and generates the first data packet.
Step 201c, the sending device sets the header of the fourth data packet as a second header, and generates a second data packet.
Wherein the first header and the second header are different.
It will be appreciated that the header added by the sending device to the packet at an upper layer in the network model may be used to indicate the unique address (or link) to which the packet is to be transmitted to the lower layer. Thus, the transmission links of the data packets with different headers are different.
It should be noted that, in the method for transmitting data according to the embodiment of the present invention, since the sending device may generate the first data packet and the second data packet with the same target load data and different packet headers, the sending device may transmit the first data packet and the second data packet through different links, respectively. Thus, it may be achieved that the transmitting device transmits the first data packet and the second data packet through different networks, respectively, so that the receiving device may receive the first data packet and the second data packet through different networks, respectively.
In a possible implementation manner, in the method for transmitting data provided in the embodiment of the present invention, a TCP packet header in a first packet header and a TCP packet header in a second packet header generated by a sending device are the same or different; the IP header in the first header and the IP header in the second header are different.
It is understood that, in the case where the sending device copies the initial packet into the third packet and the fourth packet at the application layer, the TCP header in the first packet header and the TCP header in the second packet header generated by the sending device are different, and the IP packet header in the first packet header and the IP packet header in the second packet header are different.
Specifically, the data packets transmitted to the transport layer by the sending device are the third data packet and the fourth data packet. At this time, the sending device may encapsulate a TCP header (denoted as TCP1) for the third data packet at the transport layer, that is, the first header includes TCP 1; another TCP header (denoted TCP2) is encapsulated by the transport layer for this fourth data packet, i.e. TCP2 is included in the second header. The sending device may then encapsulate an IP packet header (denoted as IP1) in the network layer for the third packet, i.e., the first packet header includes IP 1; another IP header (denoted IP2) is encapsulated at the network layer for this fourth packet, i.e. the second header includes IP 2. Wherein, the sending device can respectively establish connection and control congestion for the link corresponding to TCP1/IP1 and the link corresponding to TCP2/IP 2.
It is understood that, in the case that the transmitting device copies the initial packet into the third packet and the fourth packet at the transport layer, the TCP header in the first packet header and the TCP header in the second packet header generated by the transmitting device are the same, and the IP packet header in the first packet header and the IP packet header in the second packet header are different.
Specifically, the sending device may encapsulate a TCP header (e.g., TCP1) for the initial data packet at the transport layer, i.e., the first header includes TCP 3. Then, the data packets transmitted to the network layer by the sending device are the third data packet and the fourth data packet. At this point, the sending device may encapsulate an IP header (e.g., IP1) for the third packet at the network layer, i.e., the first packet includes IP 1; another IP header (e.g., IP2) is encapsulated at the network layer for this fourth packet, i.e., the second header includes IP 2. Wherein, the sending device can establish a TCP1 connection and establish a link corresponding to IP1 and a link corresponding to IP 2. The transmitting device can perform congestion control on the link corresponding to the IP1 and the link corresponding to the IP2, respectively.
It should be noted that, in the method for transmitting data according to the embodiment of the present invention, the sending device may implement, in multiple ways, a link for allocating transmission to multiple identical data packets, for example, implement, in two ways, a link for allocating transmission to two identical data packets. Thus, the flexibility of the transmitting device to transmit the data packet can be improved, and the flexibility of the receiving device to receive the data packet can be improved.
In a possible implementation manner, in the method for transmitting data provided in the embodiment of the present invention, a first header generated by a sending device includes a first identifier, and a second header generated by the sending device includes a second identifier; the first identifier and the second identifier are the same, or the first identifier and the second identifier are preset corresponding identifiers.
It can be understood that the link-division transmission needs to consider the issue of accepting or rejecting the same data packets (i.e. data packets with the same target load data) by the receiving device and the receiving order of the data packets; therefore, after the transmitting device copies the transmitted initial data packet into the third data packet and the fourth data packet, different identifiers are respectively encapsulated in the two data packets.
Optionally, the sending device may generate the initial data packet into two first data packets and second data packets having the same content and the same identifier.
Specifically, the sending device may obtain the summary information of two data packets with the same content through a hash algorithm, to obtain the identifiers of the two data packets.
Where a hash algorithm is used to map a binary value of arbitrary length to a shorter binary value of fixed length, this small binary value is called the hash value. The hash value is a unique and extremely compact numerical representation of a piece of data, and one hash value can represent one piece of summary information. Thus, the hash values of the same two data packets are the same, i.e. the digest information of the same two data packets is the same. On the contrary, different data packets have different hash values and different summary information.
Illustratively, the digest information (denoted as digest information 1) encapsulated by the sending device for the third packet is the same as the digest information encapsulated for the fourth packet. That is, the digest information of the first packet is the same as the digest information of the second packet, and the first identifier and the second identifier are the same.
One of the summary information is usually large, so that the range of the data packet represented by the transmitting device according to the summary information is relatively wide.
Optionally, the sending device may perform cyclic numbering on a plurality of data packets corresponding to data to be sent, so that the sequence number of the data packet identifies that cyclic resetting is performed every certain number of data packets. The sending device may generate the initial data packet into a first data packet and a second data packet with the same content and different sequence number identifications.
For example, the sequence number of a data packet may be 1 byte, but is not limited to 1 byte, and 1 byte is taken as an example in the following embodiments. For example, in two data packets with the same content and different sequence number identifications, the sequence identification of one data packet may be binary 0+7 bits (bit) (e.g. binary 00000000-; and, the sequence number of the packet identifies that a cycle reset is performed every 128 packets. And then, the sending equipment transmits the data packet added with the serial number identification to the next layer for bottom layer encapsulation, and the size of the data packet meets the bottom layer requirement.
For example, the sequence number identifier (i.e., the first identifier) of the first packet is 00000001, and the sequence number identifier (i.e., the second identifier) of the first packet is 10000001. At this time, the first identifier and the second identifier are preset corresponding identifiers.
It should be noted that, in the method for transmitting data according to the embodiment of the present invention, the sending device may encapsulate a first identifier for a first header of a first data packet and encapsulate a second identifier for a second header of a second data packet, so that after receiving the first data packet and the second data packet with the same target load data, the receiving device may distinguish the first data packet and the second data packet according to the first identifier and the second identifier.
In a possible implementation manner, as shown in fig. 3, the method for transmitting data provided in the embodiment of the present invention is a schematic flow chart of another method for transmitting data provided in the embodiment of the present invention. With reference to fig. 2 and fig. 3, the method for transmitting data, after step 205, may further include step 206:
and step 206, the receiving device discards the second data packet under the condition that the first identifier and the second identifier are the same or the first identifier and the second identifier are preset corresponding identifiers.
It should be emphasized that the first identifier and the second identifier are the same, or the first identifier and the second identifier are preset corresponding identifiers, which indicates that the target load data of the first data packet and the target load data of the second data packet are the same.
It should be noted that, in the method for transmitting data according to the embodiment of the present invention, since the first packet header of the first data packet sent by the sending device includes the first identifier, and the second data packet includes the second identifier, when the receiving device receives the first data packet first and then receives the second data packet, it may determine, according to the first identifier, that the second data packet includes the second identifier in the packet header. Therefore, the receiving equipment can discard the second data packet, and the resource utilization rate in the data transmission process is further improved.
In a possible implementation manner, as shown in fig. 4, the method for transmitting data provided in the embodiment of the present invention is a schematic flow chart of another method for transmitting data provided in the embodiment of the present invention. In conjunction with fig. 3 and fig. 4, the method for transmitting data, before step 206, may further include step 207, and step 206 may be replaced with step 206 a:
step 207, the receiving device checks the integrity of the first data packet.
In particular, the receiving device may use a hash Algorithm, such as Message-Digest Algorithm 5 (MD 5), to verify the integrity of the data packet.
Wherein, the sending device can obtain the sending side summary information of the first data packet through the MD5 before sending the first data packet. When receiving the first packet, the receiving device may calculate, by using MD5, the receiving-side digest information of the received first packet.
Step 206a, when the integrity of the first data packet meets the preset condition and the first identifier and the second identifier are the same, or the integrity of the first data packet meets the preset condition and the first identifier and the second identifier are preset corresponding identifiers, the receiving device discards the second data packet.
Illustratively, the preset condition is that the sending side summary information and the receiving side summary information of the first data packet are the same.
Optionally, the sending side summary information may be the same as or different from the summary information indicated by the first identifier.
Specifically, the sending side summary information and the receiving side summary information of the first data packet are the same, which indicates that the first data packet received by the receiving device has integrity.
It should be noted that, in the method for transmitting data provided in the embodiment of the present invention, after verifying that the integrity of the first data packet meets the condition, the receiving device may discard the second data packet. Therefore, the integrity of the received data packet including the target load data can be ensured to meet the preset condition while the resource utilization rate in the data transmission process is improved.
In a possible implementation manner, with reference to fig. 4, fig. 5 shows a flowchart of another method for transmitting data according to an embodiment of the present invention. The method shown in fig. 5 may further include step 208 after step 207. Specifically, after the step 206a, the method may further include the step 208:
and step 208, under the condition that the integrity of the first data packet meets the preset condition, the receiving device reads the target load data of the first data packet.
It should be noted that, in the embodiment of the present invention, the step 206a and the step 208 may be parallel steps, and the sequence of executing the step 206a and the step 208 is not limited specifically, for example, the step 208 is executed after the step 206a in fig. 5.
It is understood that, depending on the different encapsulation of the data packet by the sending device, the receiving device may perform corresponding decapsulation after receiving the data packet.
For example, in the case where the transmitting device encapsulates TCP1 for the third data packet at the transport layer, and where the network layer encapsulates IP1 for the third data packet, that is, the transmitting device includes TCP1 and IP1 in the first packet header of the first data packet, after receiving the first data packet, the receiving device may decapsulate IP1 at the network layer on the receiving device side and decapsulate TCP1 at the transport layer, respectively. Therefore, the receiving device is enabled to decapsulate the first packet header of the first data packet so as to read the target load data of the first data packet.
It should be noted that, in the method for transmitting data according to the embodiment of the present invention, because the sending device may implement, in multiple ways, a link for allocating transmission to multiple identical data packets, for example, may implement, in two ways, a link for allocating transmission to two identical data packets, a receiving device may receive two identical data packets through the links in the two ways. Thus, the flexibility of receiving the data packet by the receiving apparatus can be improved.
In a possible implementation manner, with reference to fig. 4, fig. 6 shows a schematic flow chart of another method for transmitting data according to an embodiment of the present invention. In the method shown in fig. 6, step 206a may be replaced with step 209. Specifically, after step 209, step 210 may be further included:
step 209, the receiving device checks the integrity of the second data packet if the integrity of the first data packet does not meet the preset condition and the first identifier and the second identifier are the same, or if the integrity of the first data packet does not meet the preset condition and the first identifier and the second identifier are preset corresponding identifiers.
For the description of the integrity check of the second data packet, reference may be made to the description related to the check of the first data packet in the foregoing embodiment, and details of this description are not repeated in this embodiment of the present invention.
Step 210, when the integrity of the second data packet meets the preset condition, the receiving device reads the target load data of the second data packet.
For the description of the reading process of the second data packet, reference may be made to the description related to reading the first data packet in the foregoing embodiment, which is not described again in this embodiment of the present invention.
For example, in conjunction with fig. 6, after step 209, the method for transmitting data according to the embodiment of the present invention may further include step 211.
Step 211, when the integrity of the second data packet does not meet the preset condition, the receiving device requests the sending device to retransmit the second data packet through the second network.
Specifically, the sending device may save a backup of the second packet on the sending device side before sending the second packet. In addition, the receiving device may send a request message to the sending device to request the sending device to retransmit the second data packet over the second network.
In addition, the method may further include step 212 after step 207. For example, the method may further include, after step 209, step 212:
step 212, the receiving device requests the sending device to retransmit the first data packet through the first network when the integrity of the first data packet does not meet the preset condition.
Specifically, the description of the retransmission process of the first data packet may refer to the description related to retransmission of the second data packet in the foregoing embodiment, which is not described again in this embodiment of the present invention.
In this embodiment of the present invention, step 210 and step 211 may be parallel steps, and the sequence of step 10 and step 211 is not specifically limited.
Similarly, for the process of transmitting multiple data packets with the same target load data between the sending device and the receiving device through more than two networks, reference may be made to the above description of the process of transmitting the first data packet through the first network and transmitting the second data packet through the second network between the sending device and the receiving device, which is not described again in this embodiment of the present invention.
It should be noted that, according to the method for transmitting data provided in the embodiment of the present invention, even if the integrity of the first data packet received by the receiving device first does not meet the preset condition, the receiving device may receive the second data packet whose integrity meets the preset condition, and read the target load data of the second data packet, without waiting for the retransmitted first data packet. Therefore, the integrity of the data packet received by the terminal can be further ensured to meet the preset condition, and the time delay of data transmission can be further reduced.
Exemplarily, as shown in fig. 7, a schematic diagram of a possible structure of a sending device provided in an embodiment of the present invention is shown. Fig. 7 shows a transmitting apparatus 70 including: a generating module 701 and a sending module 702; a generating module 701, configured to generate a first data packet and a second data packet according to an initial data packet to be sent, where target load data of the initial data packet, the first data packet, and the second data packet are all the same, and target load data of one data packet is a user data portion in the data packet; a sending module 702, configured to send the first data packet generated by the generating module 701 to a receiving device through a first network; the second data packet generated by the generating module 701 is sent to the receiving device through a second network, where the first network is different from the second network.
Optionally, the generating module 701 is specifically configured to copy, at an application layer or a transmission layer, the initial data packet into a third data packet and a fourth data packet, where the third data packet is the same as the fourth data packet; setting a packet header of a third data packet as a first packet header to generate a first data packet; setting a header of a fourth data packet as a second header to generate a second data packet; wherein the first header and the second header are different.
Optionally, a TCP header in the first header and a TCP header in the second header are the same or different; the IP header in the first header and the IP header in the second header are different.
Optionally, the first packet header includes a first identifier, and the second packet header includes a second identifier; the first identifier and the second identifier are the same, or the first identifier and the second identifier are preset corresponding identifiers.
The sending device 70 provided in the embodiment of the present invention can implement each process implemented by the sending device in the above method embodiments, and is not described here again to avoid repetition.
In the sending device provided in the embodiment of the present invention, because the sending device can send the first data packet and the second data packet with the same target load data through different networks, the receiving device can receive the first data packet and the second data packet, respectively, and determine the data packet (e.g., the first data packet) from the network with the lower transmission delay. Therefore, even if the external environment causes the data transmission delay of one network to be larger, the receiving equipment can also receive and determine the data packet from another network with lower transmission delay, and the problem of higher data transmission delay can be solved.
Exemplarily, as shown in fig. 8, a schematic diagram of a possible structure of a receiving device 80 provided in an embodiment of the present invention is shown. Fig. 8 shows a receiving apparatus 80 including: a receiving module 801 and a discarding module 802; a receiving module 801, configured to receive, through a first network, a first data packet sent by a sending device, where the first data packet includes a first identifier; receiving a second data packet sent by the sending device through a second network, wherein the second data packet comprises a second identifier, and the first network is different from the second network; a discarding module 802, configured to discard the second data packet received by the receiving module 801 when the first identifier is the same as the second identifier, or the first identifier and the second identifier are preset corresponding identifiers.
Optionally, the receiving device 80 further includes: a verification module 803; a checking module 803, configured to check the integrity of the first data packet before the discarding module 802 discards the second data packet; the discarding module 802 is specifically configured to discard the second data packet under the condition that the integrity of the first data packet is verified by the verifying module 803 to meet the preset condition and if the first identifier and the second identifier are the same, or the integrity of the first data packet meets the preset condition and the first identifier and the second identifier are preset corresponding identifiers.
Optionally, the receiving device 80 further includes: a reading module 804; a reading module 804, configured to read the target load data of the first data packet when the integrity of the first data packet meets a preset condition after the verification module 803 verifies the integrity of the first data packet.
Optionally, the checking module 803 is further configured to check the integrity of the first data packet, and check the integrity of the second data packet if the integrity of the first data packet is checked by the checking module 803 to be inconsistent with the preset condition and the first identifier and the second identifier are the same, or if the integrity of the first data packet is not consistent with the preset condition and the first identifier and the second identifier are preset corresponding identifiers.
The receiving device 80 provided in the embodiment of the present invention can implement each process implemented by the receiving device in the above method embodiments, and for avoiding repetition, details are not described here again.
In the receiving device provided in the embodiment of the present invention, since the first packet header of the first data packet sent by the sending device includes the first identifier, and the second data packet includes the second identifier, when the receiving device receives the first data packet and the second data packet in sequence, the receiving device may determine, according to the first identifier, the second data packet whose packet header includes the second identifier. Therefore, the receiving equipment can discard the second data packet, and the resource utilization rate in the data transmission process is further improved.
Fig. 9 is a schematic diagram of a hardware structure of a sending device for implementing various embodiments of the present invention, where the sending device 90 includes: a processor 901, a transceiver 902, a memory 903, a user interface 904, and a bus interface 905.
The processor 901 is configured to generate a first data packet and a second data packet according to an initial data packet to be sent, where target load data of the initial data packet, the first data packet, and the second data packet are all the same; a transceiver 902 for transmitting the first data packet generated by the processor 901 to a receiving device through a first network; the second data packet generated by processor 901 is transmitted to the receiving device over a second network, the first network being different from the second network.
In embodiments of the invention, in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. Bus interface 905 provides an interface. The transceiver 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 904 may also be an interface capable of interfacing with other devices for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 901 is responsible for managing a bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.
In addition, the sending device 90 further includes some functional modules that are not shown, and are not described herein again.
Optionally, an embodiment of the present invention provides a sending device, where the sending device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the steps performed by the sending device in the method for transmitting data in the foregoing method embodiment are implemented.
Optionally, an embodiment of the present invention provides 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 the steps performed by the sending device in the method for transmitting data in the foregoing method embodiment. And the same technical effect can be achieved, and in order to avoid repetition, the description is omitted. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
In the sending device provided in the embodiment of the present invention, because the sending device can send the first data packet and the second data packet with the same target load data through different networks, the receiving device can receive the first data packet and the second data packet, respectively, and determine the data packet (e.g., the first data packet) from the network with the lower transmission delay. Therefore, even if the external environment causes the data transmission delay of one network to be larger, the receiving equipment can also receive and determine the data packet from another network with lower transmission delay, and the problem of higher data transmission delay can be solved.
Fig. 10 is a schematic diagram of a hardware structure of a receiving device for implementing various embodiments of the present invention, where the receiving device 100 includes: a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface 1005.
The transceiver 1002 is configured to receive, through a first network, a first data packet sent by a sending device, where the first data packet includes a first identifier; receiving a second data packet sent by the sending device through a second network, wherein the second data packet comprises a second identifier, and the first network is different from the second network; the processor 1001 is configured to discard the second packet received by the transceiver 1002 if the first identifier and the second identifier are the same or the first identifier and the second identifier are preset corresponding identifiers.
In the embodiment of the present invention, in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. Bus interface 1005 provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1004 may also be an interface capable of interfacing with devices requiring connection, including but not limited to a keypad, display, speaker, microphone, joystick, etc., for different user devices. The processor 1001 is responsible for managing a bus architecture and general processes, and the memory 1003 may store data used by the processor 1001 in performing operations.
In addition, the receiving apparatus 100 further includes some functional modules that are not shown, and are not described herein again.
Optionally, an embodiment of the present invention provides a receiving device, where the receiving device includes a processor, a memory, and a computer program stored in the memory and capable of being executed on the processor, and when the computer program is executed by the processor, the steps performed by the receiving device in the method for transmitting data in the foregoing method embodiment are implemented.
Optionally, an embodiment of the present invention provides 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 the steps performed by the receiving device in the method for transmitting data in the foregoing method embodiment. And the same technical effect can be achieved, and in order to avoid repetition, the description is omitted. The computer readable storage medium is, for example, ROM, RAM, magnetic disk or optical disk.
In the receiving device provided in the embodiment of the present invention, since the first packet header of the first data packet sent by the sending device includes the first identifier, and the second data packet includes the second identifier, when the receiving device receives the first data packet and the second data packet in sequence, the receiving device may determine, according to the first identifier, the second data packet whose packet header includes the second identifier. Therefore, the receiving equipment can discard the second data packet, and the resource utilization rate in the data transmission process is further improved.
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.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method for transmitting data in the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention 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 invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A method for transmitting data, applied to a sending device, is characterized by comprising the following steps:
generating a first data packet and a second data packet according to an initial data packet to be sent, wherein target load data of the initial data packet, the target load data of the first data packet and the target load data of the second data packet are the same, and the target load data of one data packet is user data in the one data packet;
sending the first data packet to a receiving device through a first network;
sending the second data packet to the receiving device over a second network, the first network being different from the second network;
the generating a first data packet and a second data packet according to the initial data packet to be sent includes:
at an application layer or a transmission layer, copying the initial data packet into a third data packet and a fourth data packet, wherein the third data packet and the fourth data packet are the same;
setting the header of the third data packet as a first packet header to generate a first data packet;
setting the header of the fourth data packet as a second header to generate a second data packet;
the first packet header and the second packet header are different, the first packet header and the second packet header respectively correspond to different networks, the first packet header comprises a first identifier, and the second packet header comprises a second identifier; the first identification and the second identification are preset corresponding identifications; the sending device is arranged in the application layer, a TCP packet header in the first packet header is different from a TCP packet header in the second packet header, and an IP packet header in the first packet header is different from an IP packet header in the second packet header; in the transmission layer, the sending device is configured to have the same TCP header in the first header and the same TCP header in the second header, and the IP header in the first header and the IP header in the second header are different.
2. A method for transmitting data, applied to a receiving device, is characterized by comprising the following steps:
receiving a first data packet sent by sending equipment through a first network, wherein the first data packet comprises a first identifier;
receiving, by a second network, a second data packet sent by the sending device, where the second data packet includes a second identifier, and the first network is different from the second network;
discarding the second data packet under the condition that the integrity of the first data packet meets a preset condition and the first identifier and the second identifier are the same, or the integrity of the first data packet meets a preset condition and the first identifier and the second identifier are preset corresponding identifiers; when the integrity of the first data packet does not meet a preset condition and the first identifier and the second identifier are the same, or the integrity of the first data packet does not meet the preset condition and the first identifier and the second identifier are preset corresponding identifiers, verifying the integrity of the second data packet; requesting the sending device to retransmit the first data packet through the first network under the condition that the integrity of the first data packet does not meet a preset condition;
the first header of the first data packet and the second header of the second data packet are different, and the first header and the second header respectively correspond to different networks.
3. The method of claim 2, wherein before dropping the second packet, further comprising:
and checking the integrity of the first data packet.
4. The method of claim 3, wherein after verifying the integrity of the first data packet, further comprising:
and under the condition that the integrity of the first data packet meets a preset condition, reading the target load data of the first data packet.
5. A transmitting device, comprising: the device comprises a generating module and a sending module;
the generating module is configured to generate a first data packet and a second data packet according to an initial data packet to be sent, where target load data of the initial data packet, the target load data of the first data packet, and the target load data of the second data packet are all the same, and target load data of one data packet is user data in the one data packet;
the sending module is configured to send the first data packet generated by the generating module to a receiving device through a first network; sending the second data packet generated by the generating module to the receiving device through a second network, wherein the first network is different from the second network;
the generating module is specifically configured to copy, at an application layer or a transport layer, the initial data packet into a third data packet and a fourth data packet, where the third data packet is the same as the fourth data packet; setting the header of the third data packet as a first packet header to generate a first data packet; setting the header of the fourth data packet as a second header to generate a second data packet; the first packet header and the second packet header are different, the first packet header and the second packet header respectively correspond to different networks, the first packet header comprises a first identifier, and the second packet header comprises a second identifier; the first identification and the second identification are preset corresponding identifications; the sending device is arranged in the application layer, a TCP packet header in the first packet header is different from a TCP packet header in the second packet header, and an IP packet header in the first packet header is different from an IP packet header in the second packet header; in the transmission layer, the sending device is configured to have the same TCP header in the first header and the same TCP header in the second header, and the IP header in the first header and the IP header in the second header are different.
6. A receiving device, comprising: the device comprises a receiving module, a discarding module and a requesting module;
the receiving module is configured to receive a first data packet sent by a sending device through a first network, where the first data packet includes a first identifier; receiving, by a second network, a second data packet sent by the sending device, where the second data packet includes a second identifier, and the first network is different from the second network;
the discarding module is configured to discard the second data packet received by the receiving module when the integrity of the first data packet meets a preset condition and the first identifier and the second identifier are the same, or the integrity of the first data packet meets a preset condition and the first identifier and the second identifier are preset corresponding identifiers; under the condition that the integrity of the first data packet does not meet a preset condition and the first identifier and the second identifier are the same, or the integrity of the first data packet does not meet the preset condition and the first identifier and the second identifier are preset corresponding identifiers, the integrity of the second data packet is checked;
the request module is configured to request the sending device to retransmit the first data packet through the first network when the integrity of the first data packet does not meet a preset condition;
the first header of the first data packet and the second header of the second data packet are different, and the first header and the second header respectively correspond to different networks.
7. The receiving apparatus according to claim 6, wherein the receiving apparatus further comprises: a checking module;
the checking module is configured to check the integrity of the first data packet before the discarding module discards the second data packet.
8. The receiving apparatus according to claim 7, wherein the receiving apparatus further comprises: a reading module;
the reading module is configured to read the target load data of the first data packet when the integrity of the first data packet meets a preset condition after the checking module checks the integrity of the first data packet.
9. A transmitting device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of transmitting data according to claim 1.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of transmitting data according to claim 1.
11. A receiving device, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of transmitting data according to any one of claims 2 to 4.
12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of transmitting data according to any one of claims 2 to 4.
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| CN111083735A (en) * | 2019-11-18 | 2020-04-28 | 中兴通讯股份有限公司 | Method and device for sending and receiving data packet |
| CN114222253A (en) * | 2021-11-24 | 2022-03-22 | 杭州三汇软件有限公司 | Network decision method and device for dual-network main operation terminal |
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| CN106254238B (en) * | 2016-09-29 | 2018-12-28 | 胡汉强 | A kind of data transmission method, Centralized Controller and communication device |
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