CN111541998B - Multicast transmission method, system, device and storage medium - Google Patents
Multicast transmission method, system, device and storage medium Download PDFInfo
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- CN111541998B CN111541998B CN202010259694.6A CN202010259694A CN111541998B CN 111541998 B CN111541998 B CN 111541998B CN 202010259694 A CN202010259694 A CN 202010259694A CN 111541998 B CN111541998 B CN 111541998B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
Abstract
The application discloses a multicast transmission method, a system, equipment and a storage medium, relating to but not limited to the technical field of self-organizing networks, wherein the multicast transmission method comprises the following steps: grouping the nodes to obtain a multicast group, wherein the multicast group comprises a plurality of nodes for transmitting multicast service; allocating channels to multicast groups; configuring a time period of multicast service transmission; and transmitting the multicast service by using the channel of the multicast group in the time period. The multicast transmission method, the multicast transmission system, the multicast transmission equipment and the storage medium can identify the target node of multicast transmission by grouping the nodes; by configuring the time period of multicast service transmission, the whole network broadcast and multicast can be effectively distinguished; the channel of the multicast group is used for transmitting the multicast service, so that invalid forwarding caused by whole network broadcast forwarding can be reduced, the network load is reduced, and the transmission timeliness of the multicast service is improved.
Description
Technical Field
The embodiments of the present application relate to, but not limited to, the field of ad hoc network technologies, and in particular, to a multicast transmission method, system, device, and storage medium.
Background
The main traffic modalities of ad-hoc networks are broadcast and multicast traffic, and a small amount of unicast traffic. The broadcast and multicast services of the traditional network only cover the nodes in the coverage range of the source node transmission, and other nodes do not forward the broadcast messages after receiving the broadcast messages, so that the coverage range is insufficient. The self-organizing network does not depend on the topological structure of the traditional network, utilizes the intermediate node as a relay through the self-organizing network form, and adopts a broadcast forwarding mode to expand the coverage area of the network.
At present, a self-organizing network generally adopts a whole network broadcast forwarding mode to realize multicast and broadcast services, and in a multicast scene, because target nodes are different, the whole network broadcast forwarding can generate a large amount of invalid forwarding, so that the network load and the invalid processing time delay of the nodes are increased.
Disclosure of Invention
The embodiments of the present application aim to solve at least one of the technical problems existing in the prior art to some extent. Therefore, the embodiment of the application provides a multicast transmission method, which can avoid invalid forwarding caused by whole network broadcast forwarding, reduce network load, and improve transmission timeliness of multicast services.
The embodiment of the application also provides a multicast transmission system.
The embodiment of the application also provides multicast transmission equipment.
The embodiment of the application also provides a computer readable storage medium.
In a first aspect, an embodiment of the present application provides a multicast transmission method, including:
grouping the nodes to obtain a multicast group, wherein the multicast group comprises a plurality of nodes for transmitting multicast service;
allocating channels to multicast groups;
configuring a time period of multicast service transmission;
and transmitting the multicast service by using the channel of the multicast group in the time period.
The multicast transmission method of the embodiment of the application has at least the following beneficial effects:
1. by grouping the nodes, the target node of multicast transmission can be identified;
2. by configuring the time period of multicast service transmission, the whole network broadcast and multicast can be effectively distinguished;
3. the channel of the multicast group is used for transmitting the multicast service, so that invalid forwarding caused by whole network broadcast forwarding can be reduced, the network load is reduced, and the transmission timeliness of the multicast service is improved.
According to another embodiment of the present application, a multicast transmission method for allocating a channel to a multicast group includes: and allocating independent channels to the multicast group in a frequency division mode.
According to the multicast transmission method, the independent channels are distributed to the multicast groups in a frequency division mode, the channels correspond to the independent frequency points, parallel transmission of a plurality of multicast services can be achieved, and therefore transmission delay of the multicast services is reduced.
According to another embodiment of the present application, a multicast transmission method for allocating a channel to a multicast group further includes: dividing channels of the multicast group into a control channel and a data channel by adopting a time division mode; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
According to the multicast transmission method, the channels of the multicast group are divided into the control channel and the data channel, so that the time period of multicast service transmission and the network load of the control channel can be effectively controlled, the network load is dispersed from the time domain, and the network load is prevented from being too heavy.
According to another embodiment of the present application, a method for multicast transmission, where configuring a time period for multicast service transmission includes: configuring a first period and a second period, wherein the first period is used for transmitting broadcast services, and the second period is used for transmitting multicast services.
According to the multicast transmission method, the transmission time of the broadcast service and the transmission time of the multicast service are periodically divided, and the whole network broadcast and multicast can be effectively distinguished.
According to another embodiment of the present application, a node includes a source node and a target node, the source node transmits a multicast service to the target node using a channel of a multicast group during a time period of multicast service transmission, the multicast group includes a plurality of nodes for transmitting the multicast service, and the method further includes:
the target node sends a multicast service request to the source node and acquires a packet response fed back by the source node; the grouping response is used for indicating the target node to join the multicast group;
the target node is added into the multicast group according to the grouping response;
and in the time period of multicast service transmission, the target node is switched to a channel of a multicast group to receive and forward the multicast service sent by the source node.
The multicast transmission method of the embodiment of the application can reduce invalid forwarding caused by whole network broadcast forwarding, reduce network load and improve the transmission timeliness of multicast services.
According to further embodiments of the present application, a multicast transmission method, the channels of a multicast group include a control channel and a data channel; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
According to the multicast transmission method, the time period of multicast service transmission is controlled through the control channel, the network load of the data channel is controlled, the network load is dispersed from the time domain, and the network load is prevented from being too heavy.
In a second aspect, an embodiment of the present application provides a multicast transmission system, including: the system comprises a grouping management unit, a period distribution unit and a service transmission unit; the grouping management unit is connected with one end of the period distribution unit, and the other end of the period distribution unit is connected with the service transmission unit;
the group management unit is used for grouping the nodes and distributing channels to the multicast group, and the multicast group comprises a plurality of nodes for transmitting multicast services;
the period allocation unit is used for configuring the time period of multicast service transmission;
the service transmission unit is used for transmitting the multicast service by using the channel of the multicast group in a time period.
The multicast transmission system of the embodiment of the application has at least the following beneficial effects:
1. the grouping management unit groups the nodes and can identify the target nodes of multicast transmission;
2. the period distribution unit configures the time period of multicast service transmission, and can effectively distinguish whole network broadcast and multicast;
3. the service transmission unit transmits the multicast service by using the channel of the multicast group, so that invalid forwarding caused by whole network broadcast forwarding can be reduced, network load is reduced, and transmission timeliness of the multicast service is improved.
According to another embodiment of the present application, the multicast transmission system further includes a grouping management unit configured to divide channels of the multicast group into a control channel and a data channel; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
According to the multicast transmission system, the channels of the multicast group are divided into the control channel and the data channel through the grouping management unit, so that the time period of multicast service transmission and the network load of the control channel can be effectively controlled, the network load is dispersed from the time domain, and the network load is prevented from being too heavy.
In a third aspect, an embodiment of the present application provides a multicast transmission device, including:
at least one processor, and,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the multicast transmission method of some embodiments of the present application.
The multicast transmission device of the embodiment of the application has at least the following beneficial effects:
1. by grouping the nodes, the target node of multicast transmission can be identified;
2. by configuring the time period of multicast service transmission, the whole network broadcast and multicast can be effectively distinguished;
3. the channel of the multicast group is used for transmitting the multicast service, so that invalid forwarding caused by whole network broadcast forwarding can be reduced, the network load is reduced, and the transmission timeliness of the multicast service is improved.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions for causing a computer to perform a multicast transmission method of some embodiments of the present application.
The computer-readable storage medium of the embodiment of the application has at least the following beneficial effects:
1. by grouping the nodes, the target node of multicast transmission can be identified;
2. by configuring the time period of multicast service transmission, the whole network broadcast and multicast can be effectively distinguished;
3. the channel of the multicast group is used for transmitting the multicast service, so that invalid forwarding caused by whole network broadcast forwarding can be reduced, the network load is reduced, and the transmission timeliness of the multicast service is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a flowchart illustrating an embodiment of a multicast transmission method according to the present application;
fig. 2 is a flowchart illustrating another embodiment of a multicast transmission method according to an embodiment of the present application;
fig. 3 is a system architecture diagram of an embodiment of a multicast transmission system according to the present application.
Detailed Description
The conception and the resulting technical effects of the present application will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts based on the embodiments of the present application belong to the protection scope of the present application.
In the description of the present application, if an orientation description is referred to, for example, "upper", "lower", "front", "rear", "left", "right", etc., indicating an orientation or positional relationship based on that shown in the drawings, it is merely for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present application, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
In the embodiment of the present application, as a distributed network, an ad hoc network is an autonomous, multi-hop network, and the entire network has no fixed infrastructure, and can provide mutual communication between nodes (i.e., terminals, such as mobile phones and computers) under the condition that existing network infrastructures (such as base stations and APs) cannot be utilized or are inconvenient to utilize. Due to the limited transmission power and wireless coverage of the nodes, two nodes at a longer distance must perform packet forwarding by means of other nodes if communication is to be performed, and thus a wireless multi-hop network is formed between the nodes.
Nodes in the network have routing and packet forwarding functions, and can form any network topology through wireless connection. The ad hoc network can work independently as a single network, and can also be accessed to the existing network in the form of a terminal subnet, such as an Internet network and a cellular network.
Broadcast is the broadcasting of packets within an IP subnet that all hosts within the subnet will receive. Broadcast means that the network delivers a packet to each host of the subnet, regardless of whether the host is willing to receive the packet. The broadcast is used only in a small area, and is only available in the local subnet, and the broadcast transmission is controlled by the router and the network device.
Unicast is a network connection that enables point-to-point between a sender and each receiver. If a sender transmits the same data packet to multiple receivers at the same time, multiple copies of the same data packet must be made accordingly. If there are a large number of hosts that wish to obtain the same copy of the packet, this can result in heavy sender burden, long latency, and network congestion; hardware and bandwidth must be increased to ensure a certain quality of service.
Multicast is a network connection that enables point-to-multipoint between a sender and each recipient. If a sender transmits the same data packet to multiple receivers at the same time, only one copy of the same data packet is needed. The method improves the transmission efficiency of the data packet and reduces the possibility of congestion of the backbone network.
Multicast solves the problem of low unicast and broadcast transmission efficiency. When some users in the network need specific information, the multicast source (i.e. the multicast information sender) only sends the information once, the multicast router establishes tree-type routing for the multicast data packet by means of the multicast routing protocol, and the transmitted information begins to be copied and distributed at the fork intersection as far as possible.
Referring to fig. 1, a flowchart of an embodiment of a multicast transmission method in the embodiment of the present application is shown. As shown in fig. 1, the multicast transmission method according to the embodiment of the present application includes the following specific steps:
s101, grouping nodes to obtain a multicast group, wherein the multicast group comprises a plurality of nodes for transmitting multicast service;
s102, distributing channels to the multicast groups;
s103, configuring a time period of multicast service transmission;
s104, in the time period, the multicast service is transmitted by using the channel of the multicast group.
All nodes in the network are grouped, the nodes transmitting the multicast service are divided into multicast groups, and independent channels are allocated to the multicast groups. In some embodiments of the present application, nodes are grouped according to a predetermined rule, and an independent channel is allocated to a multicast group in a frequency division manner.
The predetermined rules include service attributes or node permissions. For example, nodes are grouped according to service attributes, which include broadcast, multicast, or unicast, using the service attributes as predetermined rules. If the node sends the broadcast service request, the node is divided into broadcast groups; if the node sends the multicast service request, the node is divided into multicast groups; and if the node sends the unicast service request, dividing the node into unicast groups.
And grouping the node authorities as a preset rule according to the node authorities, wherein the node authorities depend on a network topology structure, the authority of the source node is the highest, and the authority of the node is lower as the distance from the source node is farther. For example, in a three-hop network, the authority of a node is, from high to low: source node, one-hop node, two-hop node, three-hop node. Grouping a three-hop network, dividing one-hop nodes into a first group, dividing two-hop nodes into a second group, and dividing three-hop nodes into a third group. The hop count of the node can be determined through the transmission delay of the service request sent by the node, so that the authority of the node can be obtained.
The nodes are grouped, the network can be divided into a plurality of areas according to actual conditions, each area is defined as each different group, and the nodes falling in different areas belong to different groups.
The method allocates independent channels to the multicast group in a frequency division mode, namely the channels of the multicast group correspond to independent frequency points, so that the transmission of the multicast service is distinguished from the transmission of the broadcast or unicast service. On the other hand, for a scenario of transmitting a plurality of multicast services, since each multicast service uses an independent channel, the transmission of different multicast services on the respective channels does not interfere with each other, thereby enabling parallel transmission of the plurality of multicast services. The number of channels is limited by the network bandwidth, and the wider the network bandwidth, the greater the number of channels that can be accommodated in the network.
In other embodiments of the present application, allocating a channel to a multicast group further comprises: dividing channels of the multicast group into a control channel and a data channel by adopting a time division mode; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
The channels of the multicast group correspond to independent frequency points, the channels of the multicast group are further divided into a control channel and a data channel from a time domain, the time period of multicast service transmission is controlled through the control channel, and the network load of the data channel is controlled.
In some embodiments of the present application, configuring a time period for multicast service transmission includes: configuring a first period and a second period, wherein the first period is used for transmitting broadcast services, and the second period is used for transmitting multicast services.
And configuring the time period of service transmission according to the service attribute of the node. In the embodiment of the present application, the service attribute includes broadcast and multicast, so the time period is allocated to the broadcast and multicast. If the broadcast period comes, all nodes in the network are switched to a whole network broadcast forwarding mode to complete the transmission of the broadcast service; if the multicast period comes, the nodes of the multicast group are all switched to the channel of the multicast group to complete the transmission of the multicast service. The time period for broadcast and multicast may be dynamically adjusted based on traffic.
In the multicast period, the source node transmits multicast service to the target node, acquires the use authority of the data channel through the control channel, and transmits the multicast service by using the data channel. In some embodiments of the present application, a node processes multicast traffic data in a Time Division Multiple Access (TDMA) manner, and divides a processing time into periodic frames (frames), and each Frame is further divided into a plurality of time slots (no matter whether the frames or the time slots are mutually non-overlapping). For example, each frame is divided into 3 slots (slots), including 1 transmit slot and 2 receive slots. A source node sends first frame service data in a first time slot, a node of one hop receives the service data and forwards the first frame service data in a second time slot; and the two-hop node receives the service data in the second time slot and forwards the first frame of service data in the third time slot, and after 3 time slots, the source node starts to send the second frame of service data until all the service data are sent.
Referring to fig. 2, a flowchart of another specific embodiment of a multicast transmission method in the embodiment of the present application is shown. As shown in fig. 2, in the multicast transmission method according to the embodiment of the present application, a node includes a source node and a target node, the source node transmits a multicast service to the target node using a channel of a multicast group in a time period of multicast service transmission, the multicast group includes a plurality of nodes for transmitting the multicast service, and the method further includes the following specific steps:
s201, a target node sends a multicast service request to a source node to obtain a packet response fed back by the source node; the grouping response is used for indicating the target node to join the multicast group;
s202, adding the target node into a multicast group according to the grouping response;
and S203, in the time period of multicast service transmission, the target node is switched to a channel of a multicast group, and receives and forwards the multicast service sent by the source node.
The target node sends a multicast service request to the source node, the source node acquires the request and responds the request, and a grouping response is fed back to the target node, wherein the grouping response comprises information such as a channel of a multicast group, a time period of multicast service transmission and the like. And the target node acquires the grouping response and joins the grouping response into the multicast group. If the multicast period comes, the target node is switched to the channel of the multicast group to complete the transmission of the multicast service.
In other embodiments of the present application, the channels of the multicast group include a control channel and a data channel; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
In the multicast period, the target node acquires the use authority of the data channel through the control channel and transmits the multicast service by using the data channel. A first target node receives service data sent by a source node in a first time slot and forwards the service data in a second time slot; and the second target node receives the service data sent by the first target node in the second time slot and forwards the service data in the third time slot until the transmission of all the service data is completed.
Referring to fig. 3, a system structure diagram of an embodiment of a multicast transmission system in the embodiment of the present application is shown. As shown in fig. 3, the multicast transmission system according to the embodiment of the present application includes: the system comprises a grouping management unit, a period distribution unit and a service transmission unit; the grouping management unit is connected with one end of the period distribution unit, and the other end of the period distribution unit is connected with the service transmission unit; the group management unit is used for grouping the nodes and distributing channels to the multicast group, and the multicast group comprises a plurality of nodes for transmitting multicast services; the period allocation unit is used for configuring the time period of multicast service transmission; the service transmission unit is used for transmitting the multicast service by using the channel of the multicast group in a time period.
In other embodiments of the present application, the packet management unit is further configured to divide channels of the multicast group into a control channel and a data channel; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
In some embodiments of the present application, the grouping management unit groups the nodes in a frequency division manner, channels of the multicast group correspond to independent frequency points, and transmission of different multicast services on respective channels does not interfere with each other, so that parallel transmission of multiple multicast services can be implemented. In other embodiments of the present application, the packet management unit divides the packet channel into a control channel and a data channel in a time division manner, and manages and controls the network load of the data channel through the control channel, so as to disperse the network load of the data channel from a time domain, thereby avoiding an excessive network load of the data channel. The period distribution unit configures the time period of multicast service transmission, and the service transmission unit transmits the multicast service by using the channel of the multicast group. If the multicast period comes, the service transmission unit switches the target node to the channel of the multicast group to complete the transmission of the multicast service.
The multicast transmission equipment of the embodiment of the application comprises at least one processor and a memory which is in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the multicast transmission method of some embodiments of the present application.
According to the multicast transmission equipment, the target nodes of multicast transmission can be identified by grouping the nodes; by configuring the time period of multicast service transmission, the whole network broadcast and multicast can be effectively distinguished; the channel of the multicast group is used for transmitting the multicast service, so that invalid forwarding caused by whole network broadcast forwarding can be reduced, the network load is reduced, and the transmission timeliness of the multicast service is improved.
In the multicast transmission apparatus of the embodiment of the present Application, the Processor may be a Central Processing Unit (CPU), or may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the executable device for a multicast transmission method, the various interfaces and lines connecting the various parts of the executable device for the entire multicast transmission method.
The memory may be used for storing computer programs and/or modules, and the processor may be adapted to implement the various functions of the executable means of a multicast transmission method by executing or executing the computer programs and/or modules stored in the memory and by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
A computer-readable storage medium of embodiments of the present application stores computer-executable instructions for causing a computer to perform a multicast transmission method of some embodiments of the present application.
A computer-readable storage medium according to an embodiment of the present application can identify a target node of multicast transmission by grouping nodes; by configuring the time period of multicast service transmission, the whole network broadcast and multicast can be effectively distinguished; the channel of the multicast group is used for transmitting the multicast service, so that invalid forwarding caused by whole network broadcast forwarding can be reduced, the network load is reduced, and the transmission timeliness of the multicast service is improved.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described system embodiments are merely illustrative, and for example, the division of the modules may be a logical division, and in actual implementation, there may be another division, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted, or not executed.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Claims (7)
1. A method of multicast transmission, the method comprising:
grouping nodes to obtain a multicast group, wherein the multicast group comprises a plurality of nodes for transmitting multicast service;
allocating channels to the multicast groups;
configuring a time period of the multicast service transmission;
transmitting the multicast service by using the channel in the time period;
the allocating channels to the multicast group comprises: dividing the channel into a control channel and a data channel by adopting a time division mode; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
2. The multicast transmission method according to claim 1, wherein the configuring the time period for multicast service transmission comprises: configuring a first period and a second period, wherein the first period is used for transmitting broadcast services, and the second period is used for transmitting the multicast services.
3. The multicast transmission method according to claim 1, wherein the nodes include a source node and a destination node, the source node transmits the multicast service to the destination node using a channel of a multicast group during a time period of multicast service transmission, the multicast group includes a plurality of nodes for transmitting the multicast service, and the method further includes:
the target node sends a multicast service request to the source node and acquires a packet response fed back by the source node; the packet response is used for indicating the target node to join the multicast group;
the target node joins the multicast group according to the grouping response;
and in the time period of the multicast service transmission, the target node is switched to a channel of the multicast group to receive and forward the multicast service sent by the source node.
4. The multicast transmission method according to claim 3, wherein the channels of the multicast group include a control channel and a data channel; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
5. A multicast transmission system, the system comprising: the system comprises a grouping management unit, a period distribution unit and a service transmission unit; the grouping management unit is connected with one end of the period distribution unit, and the other end of the period distribution unit is connected with the service transmission unit;
the grouping management unit is used for grouping the nodes and distributing channels to the multicast group, and the multicast group comprises a plurality of nodes for transmitting multicast services;
the period allocation unit is used for configuring the time period of multicast service transmission;
the service transmission unit is used for transmitting the multicast service by using the channel in the time period;
the grouping management unit is also used for dividing the channel into a control channel and a data channel; the control channel is used for controlling the use authority of the data channel, and the data channel is used for transmitting the multicast service.
6. A multicast transmission apparatus, comprising:
at least one processor, and,
a memory communicatively coupled to at least one of the processors; wherein the content of the first and second substances,
the memory stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the multicast transmission method of any of claims 1 to 4.
7. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the multicast transmission method according to any one of claims 1 to 4.
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