CN110912717B - Broadcasting method and server of centerless multi-channel concurrent transmission system - Google Patents
Broadcasting method and server of centerless multi-channel concurrent transmission system Download PDFInfo
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- CN110912717B CN110912717B CN201911120914.0A CN201911120914A CN110912717B CN 110912717 B CN110912717 B CN 110912717B CN 201911120914 A CN201911120914 A CN 201911120914A CN 110912717 B CN110912717 B CN 110912717B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/30—Routing of multiclass traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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Abstract
The invention discloses a broadcasting method and a server of a centerless multi-channel concurrent transmission system, which are characterized in that equipment information of each equipment in the centerless multi-channel concurrent transmission system is obtained, and a corresponding actual service type in the centerless multi-channel concurrent transmission system is obtained according to the equipment information; selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type; according to the selected matching broadcast strategy, sending a broadcast data packet in the centerless multi-path concurrent transmission system; the problem of how to send the broadcast data in the centerless multichannel concurrent transmission system is solved, the requirement of normally sending the broadcast in the centerless multichannel concurrent transmission system is met, and the sending range of the broadcast information is enlarged.
Description
Technical Field
The invention relates to the technical field of computer networks, in particular to a broadcasting method and a server of a centerless multi-channel concurrent transmission system.
Background
Common centerless networks allow devices within the network to transmit broadcast data; such as an ad hoc network in a centerless network, allows each user terminal within the ad hoc network to transmit broadcast information.
At present, the common broadcast sending mode of the centerless network is as follows: and adding extra ID and packet numbers of the data packets, and realizing the diffusion of the broadcast data packets by continuously forwarding data and eliminating data packets with repeated numbers. The characteristics of the centerless multi-path concurrent transmission system determine that a plurality of links exist among the internal devices of the system, but a broadcasting strategy used in the multi-path concurrent system is not proposed at present, and in the centerless multi-path concurrent transmission system, how to select the route and how many routes to send the broadcast data becomes a problem. Therefore, how to transmit broadcast data in a wireless multi-path concurrent system becomes one of the problems to be solved at present.
Disclosure of Invention
The invention provides a broadcasting method and a server of a centerless multi-channel concurrent transmission system, aiming at solving the problem of how to send broadcast data in the centerless multi-channel concurrent transmission system.
In order to achieve the above object, the present invention provides a broadcasting method of a centerless multi-path concurrent transmission system, the broadcasting method comprising:
acquiring equipment information of each equipment in a centerless multi-channel concurrent transmission system, and acquiring a corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information;
selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type;
and transmitting the broadcast data packet in the centerless multi-path concurrent transmission system according to the selected matching broadcast strategy.
Further, the selecting, according to the obtained actual service category, a broadcast policy matched with the actual service category from a plurality of preset broadcast policies includes:
identifying the transmission requirement of the actual service type on a broadcast data packet according to the acquired actual service type to obtain corresponding transmission requirement information;
and selecting a broadcasting strategy according to the sending demand information.
Further, the selecting, according to the obtained actual service category, a broadcast policy matched with the actual service category from a plurality of preset broadcast policies includes:
if the obtained actual service types are as follows: if the service type has a high requirement on transmission timeliness and a small transmission data amount, the selected broadcast strategy A is as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on a first effective link;
if the obtained actual service types are as follows: and if the service type has higher requirement on the reliability of the transmitted broadcast data packet, selecting a broadcast strategy B as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on all effective links;
if the obtained actual service types are as follows: and if the service type of the broadcast data packet which is required to be sent must reach the target node, selecting a broadcast strategy C as follows: each transmission device sends broadcast data packets to each known node in a multi-path concurrent mode according to the known nodes and the number of links;
in the broadcast strategy a, in addition to transmitting broadcast data on the first active link, the broadcast data is transmitted on other active links according to the following algorithm:
under the condition that the success probability of data transmission corresponding to each effective link is equal:
assuming that p is the average probability of successful transmission of the entire active link, p >0 and p < ═ 1, then for a transmission system with n active links, the total probability of success for transmitting k (k < n) times is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
under the condition that the success probability of data transmission corresponding to each effective link is not equal:
for any valid link i, its transmission success probability is denoted as piThen, the calculation formula of the average probability p of successful data transmission for the whole link is:
wherein:
that is, when the successful transmission probabilities on the effective links are not equal, the number k of the effective links that need to be transmitted is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
polling the rest links in sequence by adopting a polling mode according to the determined number of the effective links needing to be sent;
if the polling result of the link is an effective link, the link is used for transmitting the broadcast data; and if the polling result of the link is an invalid link, polling other links which are not polled temporarily until the number of the transmitted valid links is k.
Further, the broadcasting method further includes:
and acquiring the current network quality of the centerless multi-channel concurrent transmission system while selecting the broadcast strategy matched with the actual service type.
Further, the broadcasting method further includes:
when a broadcast strategy matched with the actual service type is selected as a broadcast strategy C according to the acquired actual service type, judging whether the broadcast strategy C is adopted or not by combining the current network quality of the centerless multi-channel concurrent transmission system;
and confirming the selected broadcast strategy according to a final judgment result obtained by combining the current network quality.
Further, the determining the selected broadcast policy according to the final determination result obtained by combining the current network quality includes:
if the current network quality supports the adoption of a broadcast strategy C, confirming that a broadcast data packet is sent in the centerless multi-channel concurrent transmission system according to the broadcast strategy C;
if the current network quality does not support the adoption of the broadcast strategy C, the broadcast data packet is sent according to the broadcast strategy B by default; and/or:
and sending prompt information that the current network quality does not support the adoption of the broadcast strategy C matched with the actual service type for the user to confirm and select.
In order to achieve the above object, the present invention further provides a server, which is applied in the centerless multi-path concurrent transmission system described in the above embodiment;
the server comprises a memory and a processor, wherein the memory stores a broadcast program of a centerless multi-path concurrent transmission system which can run on the processor, and the broadcast program realizes the following steps when being run by the processor:
acquiring equipment information of each equipment in a centerless multi-channel concurrent transmission system, and acquiring a corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information;
selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type;
and transmitting the broadcast data packet in the centerless multi-path concurrent transmission system according to the selected matching broadcast strategy.
Further, the broadcast program may be further executed by the processor to select, according to the obtained actual service category, a broadcast policy matching the actual service category from a plurality of preset broadcast policies, where the broadcast policy includes:
if the obtained actual service types are as follows: if the service type has a high requirement on transmission timeliness and a small transmission data amount, the selected broadcast strategy A is as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on a first effective link;
if the obtained actual service types are as follows: and if the service type has higher requirement on the reliability of the transmitted broadcast data packet, selecting a broadcast strategy B as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on all effective links;
if the obtained actual service types are as follows: and if the service type of the broadcast data packet which is required to be sent must reach the target node, selecting a broadcast strategy C as follows: each transmission device sends broadcast data packets to each known node in a multi-path concurrent mode according to the known nodes and the number of links;
in the broadcast strategy a, in addition to transmitting broadcast data on the first active link, the broadcast data is transmitted on other active links according to the following algorithm:
under the condition that the success probability of data transmission corresponding to each effective link is equal:
assuming that p is the average probability of successful transmission of the entire active link, p >0 and p < ═ 1, then for a transmission system with n active links, the total probability of success for transmitting k (k < n) times is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
under the condition that the success probability of data transmission corresponding to each effective link is not equal:
for any valid link i, its transmission success probability is denoted as piThen, the calculation formula of the average probability p of successful data transmission for the whole link is:
wherein:
that is, when the successful transmission probabilities on the effective links are not equal, the number k of the effective links that need to be transmitted is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the value needing to be sentThe number of effective links;
polling the rest links in sequence by adopting a polling mode according to the determined number of the effective links needing to be sent;
if the polling result of the link is an effective link, the link is used for transmitting the broadcast data; and if the polling result of the link is an invalid link, polling other links which are not polled temporarily until the number of the transmitted valid links is k.
Further, the broadcast program may be further executable by the processor to implement the steps of:
when a broadcast strategy matched with the actual service type is selected as a broadcast strategy C according to the acquired actual service type, judging whether the broadcast strategy C is adopted or not by combining the current network quality of the centerless multi-channel concurrent transmission system;
and confirming the selected broadcast strategy according to a final judgment result obtained by combining the current network quality.
Further, the broadcast program may be further executed by the processor to confirm the selected broadcast policy according to a final determination result obtained by combining the current network quality, where the step of confirming the selected broadcast policy includes:
if the current network quality supports the adoption of a broadcast strategy C, confirming that a broadcast data packet is sent in the centerless multi-channel concurrent transmission system according to the broadcast strategy C;
if the current network quality does not support the adoption of the broadcast strategy C, the broadcast data packet is sent according to the broadcast strategy B by default; and/or:
and sending prompt information that the current network quality does not support the adoption of the broadcast strategy C matched with the actual service type for the user to confirm and select.
The broadcasting method and the server of the centerless multi-channel concurrent transmission system can achieve the following beneficial effects:
acquiring the equipment information of each equipment in the centerless multi-channel concurrent transmission system, and acquiring the corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information; selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type; according to the selected matching broadcast strategy, sending a broadcast data packet in the centerless multi-path concurrent transmission system; the problem of how to send the broadcast data in the centerless multichannel concurrent transmission system is solved, the requirement of normally sending the broadcast in the centerless multichannel concurrent transmission system is met, and the sending range of the broadcast information is enlarged.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described below by means of the accompanying drawings and examples.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart diagram of one embodiment of a broadcasting method of the centerless multi-path concurrent transmission system of the present invention;
fig. 2 is a schematic internal structure diagram of an embodiment of the server of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The invention provides a broadcasting method and a server of a centerless multi-channel concurrent transmission system, which solve the problem of how to send broadcast data in the centerless multi-channel concurrent transmission system, meet the requirement of normally sending broadcast in the centerless multi-channel concurrent transmission system and improve the sending range of broadcast information.
Fig. 1 is a flow chart of an embodiment of a broadcast method of a centerless multi-path concurrent transmission system according to the present invention; the broadcasting method of a centerless multi-path concurrent transmission system of the present invention can be implemented as steps S10-S30 described as follows:
step S10, acquiring equipment information of each equipment in the centerless multi-channel concurrent transmission system, and acquiring a corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information;
in the embodiment of the present invention, since multiple links may exist between each device in the centerless multi-path concurrent transmission system, before sending broadcast information, the device information of each device in the centerless multi-path concurrent transmission system needs to be acquired. In addition, different service types have different requirements for transmitting broadcast information, and therefore, the actual service types corresponding to the devices need to be acquired. In the embodiment of the present invention, the actual service category corresponding to the centerless multiple concurrent transmission system may be acquired according to the acquired device information of each device.
Step S20, selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type;
and step S30, according to the selected matching broadcast strategy, sending broadcast data packets in the centerless multi-path concurrent transmission system.
In the embodiment of the invention, aiming at different service types, a plurality of different broadcast strategies are pre-configured in the centerless multi-path concurrent transmission system, so that the broadcast sending requirements corresponding to different actual service types are met. After selecting the broadcast strategy matched with the actual service type according to the specific actual service type, the corresponding broadcast data packet can be sent in the centerless multi-channel concurrent transmission system according to the selected matched broadcast strategy.
In a specific application scenario, when a corresponding broadcast strategy is matched for an actual service type, the transmission requirement of the actual service type on a broadcast data packet can be identified according to the acquired actual service type, and corresponding transmission requirement information is obtained; and selecting a corresponding broadcast strategy according to the sending demand information. For example, for voice information, the characteristics of the voice information are: dozens of bytes, that is, the data volume is small, and it is recognized that the transmission requirement of the broadcast data packet corresponding to the voice information is: if the timeliness requirement is high, the broadcast policy matched with the broadcast data packet corresponding to the voice information is as follows: after receiving the broadcast packet for the first time, forwarding the broadcast packet on a first effective link; the broadcasting strategy is mainly suitable for wireless link scenes, and because packet loss can occur, hard requirements on whether data transmission is required to be achieved or not are not required.
Further, in an embodiment, the selecting, according to the obtained actual service category, a broadcast policy matched with the actual service category from a plurality of preset broadcast policies may also be implemented as follows:
if the obtained actual service types are as follows: if the service type has a high requirement on transmission timeliness and a small transmission data amount, the selected broadcast strategy A is as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on a first effective link; for example, the actual service categories are: voice broadcast, or other time-critical traffic classes.
If the obtained actual service types are as follows: and if the service type has higher requirement on the reliability of the transmitted broadcast data packet, selecting a broadcast strategy B as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on all effective links; for example, the actual service categories are: control commands, or other traffic classes with special requirements (e.g., requiring packets to be sent to the target node in an effort, etc.) based on customer requirements.
If the obtained actual service types are as follows: and if the service type of the broadcast data packet which is required to be sent must reach the target node, selecting a broadcast strategy C as follows: and each transmission device sends the broadcast data packet to each known node in a multi-path concurrent mode according to the known nodes and the number of the links. For the broadcast strategy C, in practical use, there is a relatively high requirement on the network quality of the centerless multi-path concurrent transmission system.
Further, for the broadcast policy a, in order to ensure successful transmission of the broadcast packet, in addition to transmitting the broadcast packet on the first active link, the broadcast packet is transmitted on other active links according to the following algorithm:
under the condition that the success probability of data transmission corresponding to each effective link is equal:
assuming that p is the average probability of successful transmission of the entire active link, p >0 and p < ═ 1, then for a transmission system with n active links, the total probability of success for transmitting k (k < n) times is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
under the condition that the success probability of data transmission corresponding to each effective link is not equal:
for any valid link i, its transmission success probability is denoted as piThen, the calculation formula of the average probability p of successful data transmission for the whole link is:
wherein:
that is, when the successful transmission probabilities on the effective links are not equal, the number k of the effective links that need to be transmitted is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
polling the rest links in sequence by adopting a polling mode according to the determined number of the effective links needing to be sent;
if the polling result of the link is an effective link, the link is used for transmitting the broadcast data; and if the polling result of the link is an invalid link, polling other links which are not polled temporarily until the number of the transmitted valid links is k.
Further, in an embodiment, since a pre-configured broadcast policy in the centerless multi-path concurrent transmission system may have a high requirement on real-time network quality, the broadcast method of the centerless multi-path concurrent transmission system further includes:
and acquiring the current network quality of the centerless multi-channel concurrent transmission system while selecting the broadcast strategy matched with the actual service type.
When the current network quality is obtained and the corresponding broadcast strategy is matched according to the actual service type, the network quality can be simultaneously used as one of the consideration factors, namely whether the current network quality supports the matched broadcast strategy or not.
In a specific application scenario, for example, when a broadcast policy matched with an actual service type is selected as a broadcast policy C according to the acquired actual service type, determining whether to adopt the broadcast policy C or not by combining the current network quality of the centerless multi-path concurrent transmission system;
and confirming the selected broadcast strategy according to a final judgment result obtained by combining the current network quality.
For example, if the current network quality supports the adoption of the broadcast policy C is determined according to the current network quality of the centerless multi-path concurrent transmission system, it is determined that the broadcast data packet is transmitted in the centerless multi-path concurrent transmission system according to the broadcast policy C.
If the current network quality does not support the adoption of the broadcasting strategy C according to the current network quality of the centerless multi-channel concurrent transmission system, a broadcasting data packet is sent according to the broadcasting strategy B by default; and/or: sending a broadcast data packet by adopting other default broadcast strategies; and/or: sending corresponding prompt information to a user for the user to confirm and select the currently required broadcast strategy; for example, in a specific application scenario, the centerless multi-path concurrent transmission system sends a prompt message that the current network quality does not support the adoption of the broadcast policy C matched with the actual service category, so that the user can confirm the selection.
The broadcasting method of the centerless multi-channel concurrent transmission system of the invention, obtain the equipment information of every apparatus in the centerless multi-channel concurrent transmission system, according to the said equipment information, obtain the correspondent actual business kind in the said centerless multi-channel concurrent transmission system; selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type; according to the selected matching broadcast strategy, sending a broadcast data packet in the centerless multi-path concurrent transmission system; the problem of how to send the broadcast data in the centerless multichannel concurrent transmission system is solved, the requirement of normally sending the broadcast in the centerless multichannel concurrent transmission system is met, and the sending range of the broadcast information is enlarged.
The embodiment of the invention also provides a server, which can be deployed in the centerless multi-path concurrent transmission system described in the embodiment of fig. 1; the broadcast method of the centerless multi-path concurrent transmission system described in the embodiment of fig. 1 may also be used to solve the problem of how to transmit broadcast data in the centerless multi-path concurrent transmission system, implement the requirement of normally transmitting broadcast in the centerless multi-path concurrent transmission system, and improve the transmission range of broadcast information.
Fig. 2 is a schematic diagram of the internal structure of one embodiment of the server according to the present invention, as shown in fig. 2. In the present embodiment, the server 1 may be a PC (Personal Computer), or may be a terminal device such as a tablet Computer or a mobile Computer. The server 1 comprises at least a memory 11, a processor 12, a communication bus 13, and a network interface 14.
The memory 11 includes at least one type of readable storage medium, which includes a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, and the like. The memory 11 may in some embodiments be an internal storage unit of the server 1, for example a hard disk of the server 1. The memory 11 may also be an external storage device of the server 1 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the server 1. Further, the memory 11 may also include both an internal storage unit of the server 1 and an external storage device. The memory 11 may be used not only to store application software installed in the server 1 and various types of data such as a code of the broadcast program 01 of the centerless multiplex parallel transmission system, but also to temporarily store data that has been output or is to be output.
The processor 12 may be a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor or other data Processing chip in some embodiments, and is used for executing program codes stored in the memory 11 or Processing data, such as executing the broadcast program 01.
The communication bus 13 is used to realize connection communication between these components.
The network interface 14 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), typically used to establish a communication link between the apparatus 1 and other electronic devices.
Optionally, the apparatus 1 may further comprise a user interface, which may comprise a Display (Display), an input unit such as a Keyboard (Keyboard), and optionally a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, or the like. The display, which may also be referred to as a display screen or display unit, is suitable for displaying information processed in the server 1 and for displaying a visual user interface.
Fig. 2 shows only the server 1 with the components 11-14 and the broadcast program 01, and it will be understood by those skilled in the art that the structure shown in fig. 2 does not constitute a limitation of the server 1, and may comprise fewer or more components than those shown, or some components may be combined, or a different arrangement of components.
Based on the description of the above embodiment, in the embodiment of the apparatus 1 shown in fig. 2, the broadcast program 01 is stored in the memory 11; the broadcast program 01 stored in the memory 11 can be executed on the processor 12, and when the broadcast program 01 is executed by the processor 12, the following steps are implemented as described in the embodiment of fig. 1:
acquiring equipment information of each equipment in a centerless multi-channel concurrent transmission system, and acquiring a corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information;
selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type;
and transmitting the broadcast data packet in the centerless multi-path concurrent transmission system according to the selected matching broadcast strategy.
In an embodiment, the broadcast program may be further executable by the processor to select, according to the obtained actual service category, a broadcast policy matching the actual service category from a plurality of preset broadcast policies, including:
identifying the transmission requirement of the actual service type on a broadcast data packet according to the acquired actual service type to obtain corresponding transmission requirement information;
and selecting a broadcasting strategy according to the sending demand information.
In an embodiment, the broadcast program may be further executable by the processor to select, according to the obtained actual service category, a broadcast policy matching the actual service category from a plurality of preset broadcast policies, including:
if the obtained actual service types are as follows: if the service type has a high requirement on transmission timeliness and a small transmission data amount, the selected broadcast strategy A is as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on a first effective link;
if the obtained actual service types are as follows: and if the service type has higher requirement on the reliability of the transmitted broadcast data packet, selecting a broadcast strategy B as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on all effective links;
if the obtained actual service types are as follows: and if the service type of the broadcast data packet which is required to be sent must reach the target node, selecting a broadcast strategy C as follows: each transmission device sends broadcast data packets to each known node in a multi-path concurrent mode according to the known nodes and the number of links;
in the broadcast strategy a, in addition to transmitting broadcast data on the first active link, the broadcast data is transmitted on other active links according to the following algorithm:
under the condition that the success probability of data transmission corresponding to each effective link is equal:
assuming that p is the average probability of successful transmission of the entire active link, p >0 and p < ═ 1, then for a transmission system with n active links, the total probability of success for transmitting k (k < n) times is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
under the condition that the success probability of data transmission corresponding to each effective link is not equal:
for any valid link i, its transmission success probability is denoted as piThen, the calculation formula of the average probability p of successful data transmission for the whole link is:
wherein:
that is, when the successful transmission probabilities on the effective links are not equal, the number k of the effective links that need to be transmitted is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
polling the rest links in sequence by adopting a polling mode according to the determined number of the effective links needing to be sent;
if the polling result of the link is an effective link, the link is used for transmitting the broadcast data; and if the polling result of the link is an invalid link, polling other links which are not polled temporarily until the number of the transmitted valid links is k.
In one embodiment, the broadcast program is further executable by the processor to implement the steps of:
and acquiring the current network quality of the centerless multi-channel concurrent transmission system while selecting the broadcast strategy matched with the actual service type.
In one embodiment, the broadcast program is further executable by the processor to implement the steps of:
when a broadcast strategy matched with the actual service type is selected as a broadcast strategy C according to the acquired actual service type, judging whether the broadcast strategy C is adopted or not by combining the current network quality of the centerless multi-channel concurrent transmission system;
and confirming the selected broadcast strategy according to a final judgment result obtained by combining the current network quality.
In one embodiment, the broadcast program may be further executable by the processor to determine the selected broadcast policy according to a final determination result obtained by combining the current network quality, and the determining includes:
if the current network quality supports the adoption of a broadcast strategy C, confirming that a broadcast data packet is sent in the centerless multi-channel concurrent transmission system according to the broadcast strategy C;
if the current network quality does not support the adoption of the broadcast strategy C, the broadcast data packet is sent according to the broadcast strategy B by default; and/or:
and sending prompt information that the current network quality does not support the adoption of the broadcast strategy C matched with the actual service type for the user to confirm and select.
The server acquires the equipment information of each equipment in the centerless multi-channel concurrent transmission system, and acquires the corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information; selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type; according to the selected matching broadcast strategy, sending a broadcast data packet in the centerless multi-path concurrent transmission system; the problem of how to send the broadcast data in the centerless multichannel concurrent transmission system is solved, the requirement of normally sending the broadcast in the centerless multichannel concurrent transmission system is met, and the sending range of the broadcast information is enlarged.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A broadcasting method of a centerless multi-path concurrent transmission system, the broadcasting method comprising:
acquiring equipment information of each equipment in a centerless multi-channel concurrent transmission system, and acquiring a corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information;
selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type;
according to the selected matching broadcast strategy, sending a broadcast data packet in the centerless multi-path concurrent transmission system;
selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type, wherein the selecting comprises the following steps:
if the obtained actual service types are as follows: if the service type has a high requirement on transmission timeliness and a small transmission data amount, the selected broadcast strategy A is as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on a first effective link;
if the obtained actual service types are as follows: and if the service type has higher requirement on the reliability of the transmitted broadcast data packet, selecting a broadcast strategy B as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on all effective links;
if the obtained actual service types are as follows: and if the service type of the broadcast data packet which is required to be sent must reach the target node, selecting a broadcast strategy C as follows: each transmission device sends broadcast data packets to each known node in a multi-path concurrent mode according to the known nodes and the number of links;
in the broadcast strategy a, in addition to transmitting broadcast data on the first active link, the broadcast data is transmitted on other active links according to the following algorithm:
under the condition that the success probability of data transmission corresponding to each effective link is equal:
assuming that p is the average probability of successful transmission of the entire active link, p >0 and p < ═ 1, then for a transmission system with n active links, the total probability of success for transmitting k (k < n) times is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
under the condition that the success probability of data transmission corresponding to each effective link is not equal:
for any valid link i, its transmission success probability is denoted as piThen, the calculation formula of the average probability p of successful data transmission for the whole link is:
wherein:
that is, when the successful transmission probabilities on the effective links are not equal, the number k of the effective links that need to be transmitted is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
polling the rest links in sequence by adopting a polling mode according to the determined number of the effective links needing to be sent;
if the polling result of the link is an effective link, the link is used for transmitting the broadcast data; and if the polling result of the link is an invalid link, polling other links which are not polled temporarily until the number of the transmitted valid links is k.
2. The broadcasting method of the centerless multi-path concurrent transmission system as claimed in claim 1, wherein the selecting a broadcasting strategy matching with the actual service category from a plurality of preset broadcasting strategies according to the acquired actual service category comprises:
identifying the transmission requirement of the actual service type on a broadcast data packet according to the acquired actual service type to obtain corresponding transmission requirement information;
and selecting a broadcasting strategy according to the sending demand information.
3. The broadcasting method of the centerless multi-path concurrent transmission system as set forth in claim 1, wherein the broadcasting method further comprises:
and acquiring the current network quality of the centerless multi-channel concurrent transmission system while selecting the broadcast strategy matched with the actual service type.
4. The broadcasting method of the centerless multi-path concurrent transmission system as set forth in claim 3, wherein the broadcasting method further comprises:
when a broadcast strategy matched with the actual service type is selected as a broadcast strategy C according to the acquired actual service type, judging whether the broadcast strategy C is adopted or not by combining the current network quality of the centerless multi-channel concurrent transmission system;
and confirming the selected broadcast strategy according to a final judgment result obtained by combining the current network quality.
5. The broadcasting method of the centerless multi-path concurrent transmission system as claimed in claim 4, wherein the confirming the selected broadcasting strategy according to the final judgment result obtained by combining the current network quality comprises:
if the current network quality supports the adoption of a broadcast strategy C, confirming that a broadcast data packet is sent in the centerless multi-channel concurrent transmission system according to the broadcast strategy C;
if the current network quality does not support the adoption of the broadcast strategy C, the broadcast data packet is sent according to the broadcast strategy B by default; and/or:
and sending prompt information that the current network quality does not support the adoption of the broadcast strategy C matched with the actual service type for the user to confirm and select.
6. A server, wherein the server is used in the centerless multi-path concurrent transmission system of claim 1;
the server comprises a memory and a processor, wherein the memory stores a broadcast program of a centerless multi-path concurrent transmission system which can run on the processor, and the broadcast program realizes the following steps when being run by the processor:
acquiring equipment information of each equipment in a centerless multi-channel concurrent transmission system, and acquiring a corresponding actual service type in the centerless multi-channel concurrent transmission system according to the equipment information;
selecting a broadcasting strategy matched with the actual service type from a plurality of preset broadcasting strategies according to the acquired actual service type;
according to the selected matching broadcast strategy, sending a broadcast data packet in the centerless multi-path concurrent transmission system;
the broadcast program may be further executed by the processor to select, according to the obtained actual service category, a broadcast policy matching the actual service category from a plurality of preset broadcast policies, where the broadcast policy includes:
if the obtained actual service types are as follows: if the service type has a high requirement on transmission timeliness and a small transmission data amount, the selected broadcast strategy A is as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on a first effective link;
if the obtained actual service types are as follows: and if the service type has higher requirement on the reliability of the transmitted broadcast data packet, selecting a broadcast strategy B as follows: after each transmission device receives the broadcast data packet for the first time, the transmission device sends the broadcast data packet on all effective links;
if the obtained actual service types are as follows: and if the service type of the broadcast data packet which is required to be sent must reach the target node, selecting a broadcast strategy C as follows: each transmission device sends broadcast data packets to each known node in a multi-path concurrent mode according to the known nodes and the number of links;
in the broadcast strategy a, in addition to transmitting broadcast data on the first active link, the broadcast data is transmitted on other active links according to the following algorithm:
under the condition that the success probability of data transmission corresponding to each effective link is equal:
assuming that p is the average probability of successful transmission of the entire active link, p >0 and p < ═ 1, then for a transmission system with n active links, the total probability of success for transmitting k (k < n) times is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
under the condition that the success probability of data transmission corresponding to each effective link is not equal:
for any valid link i, its transmission success probability is denoted as piThen, the calculation formula of the average probability p of successful data transmission for the whole link is:
wherein:
that is, when the successful transmission probabilities on the effective links are not equal, the number k of the effective links that need to be transmitted is:
when P is presentkWhen the value of k is more than or equal to 1, the value of k is the effective link number needing to be sent;
polling the rest links in sequence by adopting a polling mode according to the determined number of the effective links needing to be sent;
if the polling result of the link is an effective link, the link is used for transmitting the broadcast data; and if the polling result of the link is an invalid link, polling other links which are not polled temporarily until the number of the transmitted valid links is k.
7. The server of claim 6, wherein the broadcast program is further executable by the processor to perform the steps of:
when a broadcast strategy matched with the actual service type is selected as a broadcast strategy C according to the acquired actual service type, judging whether the broadcast strategy C is adopted or not by combining the current network quality of the centerless multi-channel concurrent transmission system;
and confirming the selected broadcast strategy according to a final judgment result obtained by combining the current network quality.
8. The server of claim 7, wherein the broadcast program is further executable by the processor to validate the selected broadcast policy based on a final determination in conjunction with the current network quality, comprising:
if the current network quality supports the adoption of a broadcast strategy C, confirming that a broadcast data packet is sent in the centerless multi-channel concurrent transmission system according to the broadcast strategy C;
if the current network quality does not support the adoption of the broadcast strategy C, the broadcast data packet is sent according to the broadcast strategy B by default; and/or:
and sending prompt information that the current network quality does not support the adoption of the broadcast strategy C matched with the actual service type for the user to confirm and select.
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| CN101232463A (en) * | 2008-02-27 | 2008-07-30 | 北京航空航天大学 | Method for distributing data under opportunity network |
| CN103269478A (en) * | 2013-05-17 | 2013-08-28 | 南京邮电大学 | Rapid broadcasting method based on position information in vehicular network |
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