CN109787870B - Access management method, device, system, initial and target access equipment - Google Patents

Abstract

The invention discloses an access management method, a device, a system, an initial access device and a target access device, wherein an access management device receives a device reselection request sent by the initial access device, the number N of devices in the same group is determined according to the request, when the N is judged to be more than or equal to 1, a first target access device meeting the conditions is determined for the current user device from various broadband access devices of the system so as to ensure that at least two devices in the same group are accessed to the same broadband access device after the current user device is accessed to the first target access device, and the first target access device is accessed to a target multicast group so as to provide content information corresponding to the target multicast group for the current user device; therefore, at least two pieces of user equipment accessing the same multicast group in the system are ensured to be realized by the same broadband access equipment, the times of copying the multicast message of the core router aiming at the target multicast group are effectively reduced, and the processing load of the core router is reduced.

Description

Access management method, device, system, initial and target access equipment

Technical Field

The present invention relates to the field of network technologies, and in particular, to an access management method, apparatus, system, and initial and target access devices.

Background

IPTV (Internet Protocol Television), i.e., interactive network Television, provides digital Television services to home users by using a broadband IP network and a series of Internet protocols to carry and transmit encoded and compressed multimedia digital signals.

The forwarding of home user multicast traffic in a broadband network is shown in fig. 1. A user equipment STB (Set Top Box) broadcasts a PPPOE (Point to Point Protocol over Ethernet) or IPoE Protocol message to all BRAS (Broadband Remote Access Server) to request Access to a certain BRAS. At present, a first response mechanism is adopted, and the PPPOE or IPoE protocol message is responded first, so that the BRAS establishes a PPPOE or IPoE channel with the STB. After the connection between the STB and the corresponding BRAS is successfully established, the STB sends an IGMP (Internet Group Management Protocol) message to the BRAS device, and notifies the BRAS device to join the designated multicast Group. The BRAS device notifies an upstream CR (Core Router) to join the designated multicast group via a multicast routing protocol. The IPTV service source sends a multicast message of a designated multicast group to the CR, the CR copies the multicast message and forwards the multicast message to the BRAS Equipment, and the BRAS Equipment copies the multicast message according to the user granularity, sends the copied message to a CPE (Customer Premise Equipment) through an IP broadband access network and forwards the copied message to the STB, thereby realizing the receiving of the network television content data stream.

In the existing multicast traffic management scheme, in the process of initially accessing the user equipment to the corresponding broadband access equipment, the broadband access equipment is selected based on the first response mechanism, and the broadband access equipment which firstly responds to the protocol message broadcast by the user equipment establishes an interaction channel between the broadband access equipment and the user equipment, so that the user equipment is directly provided with services through the broadband access equipment. In this case, there is a high possibility that all the user equipments accessing the same multicast group pass through different broadband access equipments. For example, for the same multicast group, the following situations may exist by using the existing scheme: the user equipment 1 is accessed through the broadband access equipment a, the user equipment 2 is accessed through the broadband access equipment B, the user equipment 3 is accessed through the broadband access equipment C, and at this time, the core router copies one copy for a plurality of different broadband access equipment aiming at the multicast message so as to send the copy to each corresponding broadband access equipment. This will undoubtedly increase the processing load of the core router greatly, and the processing load of the core router itself is also large; in addition, since the line bandwidth resources between the core router and the broadband access device are limited, multiple copies of the same multicast packet need to be sent at the same time, which also causes severe consumption of the broadband resources, which is contrary to the development of high-growth user quality and high-quality television service, so how to optimize the network bandwidth resources and reduce the processing load of the core router is the key to improve the quality of the multicast service.

Disclosure of Invention

The access management method, device, system, initial and target access equipment provided by the embodiment of the invention mainly solve the technical problems that: the existing multicast flow management scheme has the defects of serious network bandwidth occupation and higher processing load of a core router.

To solve the foregoing technical problem, an embodiment of the present invention provides an access management method, including:

receiving a first request which is sent by current user equipment and used for requesting to access to a target multicast group;

generating an equipment reselection request according to the first request, wherein the equipment reselection request can represent the information of a target multicast group which the current user equipment requests to access;

and sending the equipment reselection request to an access management device.

The embodiment of the invention also provides an access management method, which comprises the following steps:

receiving an equipment reselection request sent by initial access equipment, wherein the equipment reselection request can represent information of a target multicast group which is requested to be accessed by current user equipment;

determining the number N of devices in the same group according to the information of the target multicast group, wherein the devices in the same group are user devices which have access to the target multicast group in the system;

when N is more than or equal to 1, determining first target access equipment meeting conditions for the current user equipment from various broadband access equipment of the system so as to ensure that at least two same-group equipment in the system are accessed to the same broadband access equipment after the current user equipment is accessed to the first target access equipment;

and informing the first target access equipment to access the target multicast group so as to provide the content information corresponding to the target multicast group for the current user equipment.

The embodiment of the invention also provides an access management method, which comprises the following steps:

receiving a second multicast access instruction issued by an access management device;

acquiring the current user equipment information according to the second multicast access instruction;

and establishing connection with the current user equipment according to the information of the current user equipment, and accessing the target multicast group to provide content information corresponding to the target multicast group for the current user equipment.

The embodiment of the invention also provides initial access equipment, which comprises a first processor, a first memory and a first communication bus;

the first communication bus is used for realizing connection communication between the first processor and the first memory;

the first processor is configured to execute one or more programs stored in the first memory to implement the steps of the access management method on the initial access device side.

The embodiment of the invention also provides an access management device, which comprises a second processor, a second memory and a second communication bus;

the second communication bus is used for realizing connection communication between the second processor and the second memory;

the second processor is configured to execute one or more programs stored in the second memory to implement the steps of the access management method of the access management apparatus.

The embodiment of the invention also provides target access equipment, which comprises a third processor, a third memory and a third communication bus;

the third communication bus is used for realizing connection communication between the third processor and the third memory;

the third processor is configured to execute one or more programs stored in the third memory to implement the steps of the access management method of the target access device.

The embodiment of the invention also provides an access management system, which comprises the initial access equipment, the access management device and the target access equipment.

Embodiments of the present invention also provide a computer storage medium, which stores one or more programs that are executable by one or more processors to implement the steps of the access management method as described above.

The invention has the beneficial effects that:

according to the access management method, the access management device, the access management system, the initial access device and the target access device provided by the embodiment of the invention, the initial access device receives a first request which is sent by current user equipment and is used for requesting to access to a target multicast group, and generates a device reselection request according to the first request, wherein the device reselection request can represent information of the target multicast group which is requested to be accessed by the current user equipment, and sends the device reselection request to the access management device; the access management device receives a device reselection request sent by initial access equipment, determines the number N of devices in the same group according to the information of a target multicast group in the request, wherein the devices in the same group are user devices which have access to the target multicast group in a system, and determines a first target access device which meets the conditions for the current user device from various broadband access devices of the system when the judgment that the number N is more than or equal to 1 so as to ensure that at least two devices in the same group have access to the same broadband access device after the current user device is accessed to the first target access device and inform the first target access device to access to the target multicast group so as to provide the content information corresponding to the target multicast group for the current user device; therefore, at least two pieces of user equipment accessing the same multicast group in the system are ensured to be realized by the same broadband access equipment, compared with the condition that all the user equipment accessing the same multicast group in the existing system pass through different broadband access equipment, the method effectively reduces the multicast message copying times of the core router aiming at the target multicast group, reduces the processing load of the core router, further effectively relieves the occupation of line bandwidth resources, is beneficial to the development of high-quality multicast service, and is also beneficial to the multicast system to accommodate more users while ensuring the quality of the multicast service.

Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic diagram of a multicast network architecture;

fig. 2 is a flowchart illustrating an access management method according to a first embodiment of the present invention;

fig. 3 is a flowchart illustrating another access management method according to a first embodiment of the present invention;

fig. 4 is a flowchart illustrating an access management method according to a second embodiment of the present invention;

fig. 5 is a flowchart illustrating an access management method according to a third embodiment of the present invention;

fig. 6 is a schematic structural diagram of an access management system according to a fourth embodiment of the present invention;

fig. 7 is a flowchart illustrating an access management method according to a fourth embodiment of the present invention;

fig. 8 is a flowchart illustrating an access management method according to a fifth embodiment of the present invention;

fig. 9 is a flowchart illustrating another access management method according to a fifth embodiment of the present invention;

fig. 10 is a schematic structural diagram of an initial access device according to a sixth embodiment of the present invention;

fig. 11 is a schematic structural diagram of an access management apparatus according to a sixth embodiment of the present invention;

fig. 12 is a schematic structural diagram of another access management apparatus according to a sixth embodiment of the present invention;

fig. 13 is a schematic structural diagram of a target access device according to a sixth embodiment of the present invention;

fig. 14 is a schematic structural diagram of an initial access device according to a seventh embodiment of the present invention;

fig. 15 is a schematic structural diagram of an access management apparatus according to a seventh embodiment of the present invention;

fig. 16 is a schematic structural diagram of a target access device according to a seventh embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows:

to solve the problems of serious network bandwidth occupation and high core router processing load in the existing multicast traffic management scheme, an embodiment of the present invention provides an access management method, and in order to make the description clearer and easier to understand, the embodiment of the present invention mainly performs a description on the initial access device side, and when necessary, may perform a corresponding description on other sides (access management device, target access device) |! The access management method provided by the embodiment of the present invention specifically includes the following steps, please refer to fig. 2:

s201: and receiving a first request which is sent by the current user equipment and used for requesting to access to the target multicast group.

It should be understood that before the initial access device receives the first request sent by the current user equipment, the method further generally includes: and establishing a connection channel with the current user equipment. The established connection channel includes but is not limited to PPPOE channel and IPoE channel. Specifically, the current ue broadcasts PPPOE protocol packets to all broadband access devices in the multicast system, and the initial access device, as the broadband access device that responds to the protocol packets first, establishes a PPPOE channel with the current ue to implement connection. So that a subsequent first request sent by the current user equipment can be received.

It should be noted that, in this embodiment, the initial access device is not limited to a broadband access device obtained based on the first response mechanism, and may also be any other broadband access device as long as a corresponding connection channel is established with the current user equipment. For example, a particular broadband access device of the multicast system may be designated as the initial broadband access device. When each user equipment establishes a connection channel, the corresponding protocol message is directly sent to the specific broadband access equipment, and the connection channel with the specific broadband access equipment is established. The method can reduce the processing load of other broadband access devices by only needing the corresponding specific broadband access device without requiring that each broadband access device in the multicast system responds to the protocol message sent by the user device.

Those skilled in the art will appreciate that the Broadband Access device includes, but is not limited to, BRAS, BNG (Broadband Network Gateway), BSG (Broadband Service Gateway), BAS (Broadband Access Server), OFLS (Openflow Logical Switch), OFS (Openflow Switch), and software emulation corresponding to the foregoing devices.

Based on the connection channel established with the current user equipment, the initial access equipment may receive a first request sent by the current user equipment for requesting access to a target multicast group. The first request carries information of the target multicast group, including but not limited to an IP address of the target multicast group. The initial access device may further obtain information such as an IP address of the current user equipment according to the first request.

S202: and generating a device reselection request according to the first request, wherein the device reselection request can represent the information of the target multicast group which the current user equipment requests to access.

The initial access device generates a device reselection request according to the first request, and the device reselection request can represent information of a target multicast group to which the current user device requests to access, such as an IP address of the target multicast group. The device reselection request is mainly performed based on a connection channel between the initial access device and the access management apparatus, and specifically, for example, when the connection channel established between the initial access device and the access management apparatus is an OpenFlow channel, the initial access device encapsulates the first request into a PACKET _ IN message located by an OpenFlow protocol, and uploads the first request to the access management apparatus.

S203: and sending the equipment reselection request to an access management device.

The initial access device sends the generated device reselection request to the access management apparatus, and the sending method is not limited to the above-mentioned method, and any existing request sending method may be adopted as long as the device reselection request can be sent to the access management apparatus.

In some examples, the initial access device may also directly forward the first request sent by the current ue to the access management apparatus, as long as the access management apparatus can identify the message that is the ue requesting to access the target multicast group. And the access management equipment selects corresponding target access equipment to provide services for the current user equipment based on a corresponding selection mechanism according to the equipment reselection request sent by the initial access equipment. Specifically, the method includes controlling to establish a connection channel between a target access device and the current user device, controlling the target access device to access to a target multicast group designated by the current user device, and receiving, by the target access device, a content data stream (i.e., a multicast packet) of the target multicast group and sending the content data stream to the current user device to provide a network digital television service for a corresponding user.

It should be noted that the corresponding selection mechanism specifically includes: the number of the user equipment which has joined the target multicast group (i.e. the number of the same group of equipment N) is determined, when N is larger than or equal to 1, that is, it indicates that at least one user equipment is currently joined to the target multicast group, the first target access equipment selected by the access management equipment can ensure that at least two user equipments are joined to the target multicast group in the user equipment joined to the target multicast group in the system after the current user equipment is joined to the first target access equipment. In the existing multicast traffic management scheme, since the initial access device is directly accessed to the target multicast group to provide services for the user devices, it may cause that each user device accessing the same multicast group is accessed through different broadband access devices, and a core router needs to send a multicast packet corresponding to the multicast group to each corresponding broadband access device. The access management method provided by the scheme is characterized in that the initial access equipment does not directly access to a target multicast group appointed by the current user equipment, but sends an equipment reselection request to the access management device after receiving a first request of the user equipment, selects corresponding target broadband access equipment according to the access condition of the target multicast group through the equipment reselection request, ensures that the selected first target broadband access equipment can ensure that at least two user equipment accessing the target multicast group in the system are accessed through the same broadband access equipment when the number of the user equipment accessing the target multicast group is more than or equal to 1, avoids the condition that the access is realized through different broadband access equipment aiming at each user equipment accessing the same multicast group, thereby effectively reducing the replication times of the core router aiming at the multicast message of the target multicast group, the processing load of the core router is reduced, and the occupation of line bandwidth resources is effectively relieved.

In some examples, after sending the device reselection request to the access management apparatus, steps S304 and S305 shown in fig. 3 may be further included, which are specifically as follows:

s301: and receiving a first request which is sent by the current user equipment and used for requesting to access to the target multicast group.

S302: and generating a device reselection request according to the first request, wherein the device reselection request can represent the information of the target multicast group which the current user equipment requests to access.

S303: and sending the equipment reselection request to an access management device.

The steps S301 to S303 are the same as the steps S201 to S203 described in fig. 2, and are not described again here.

S304: and receiving a device migration instruction sent by the access management device based on the device reselection request, and disconnecting the connection with the current user equipment according to the device migration instruction.

After sending the device reselection request to the access management apparatus, the apparatus migration instruction sent by the access management apparatus based on the request may also be received, that is, at this time, the target access apparatus selected by the access management apparatus for the current user equipment is not the same broadband access apparatus as the initial access apparatus. At this time, according to the device migration instruction, the initial access device may identify that the initial access device is not the target access device selected by the access management apparatus, and at this time, the connection with the current user device is disconnected, and the service is no longer provided for the current user device, that is, the initial access device does not access to the designated target multicast group.

The device migration instruction may carry identification information of the target access device, the initial access device determines whether the initial access device belongs to the target access device according to the identification information of the target access device, if not, the initial access device disconnects the current user device, and if so, the initial access device may access the target multicast group to provide content information corresponding to the target multicast group to the current user device.

In some examples, after sending the device reselection instruction to the access management apparatus, the initial access device may perform corresponding processing according to whether a response of the access management apparatus is received within a preset time period.

If the response of the access management device is not received within the preset time period, the response indicates that the access management device is not the target access equipment selected by the access management device, and when the preset time is up, the connection with the current user equipment is disconnected. If the response of the access management device is received in the preset time period, the response indicates that the access management device is the target access device selected by the access management device, and the target multicast group is directly accessed at the moment so as to provide the corresponding network television content data stream for the current user equipment.

S305: and receiving a first multicast access instruction sent by the access management device based on the device reselection request, and accessing the target multicast group according to the first multicast access instruction so as to provide content information corresponding to the target multicast group to the current user equipment.

After the device reselection instruction is sent to the access management device, if a first multicast group access request sent by the access management device is received, it indicates that the initial access device is also a target access device selected by the access management device, so that the access instruction is accessed to the target multicast group to provide content information corresponding to the target multicast group to the current user equipment.

Example two:

the embodiment of the present invention provides an access management method, mainly standing on an access management device side, for mainly solving the problems of serious network bandwidth occupation and high core router processing load in the existing multicast traffic management scheme, and the method mainly includes the steps shown in fig. 4:

s401: and receiving a device reselection request sent by initial access equipment, wherein the device reselection request can represent information of a target multicast group which is requested to be accessed by current user equipment.

The access management device may be involved in a device reselection request sent by the initial access device, where the device reselection request can characterize information of a target multicast group to which the current user equipment requests to access. The access management device may obtain information of the target multicast group requested to be accessed by the user equipment, such as an IP address of the target multicast group, according to the device reselection request.

S402: and determining the number N of devices in the same group according to the information of the target multicast group, wherein the devices in the same group are the user devices which have access to the target multicast group in the system.

The access management device determines the number N of devices in the same group according to the information of the target multicast group, and it should be noted that the same master device refers to a user device that has accessed to the target multicast group in the multicast system. For example, the target multicast group to which the current ue requests to access is a multicast group a, the access management apparatus determines, according to the device reselection request, the number of all ues currently accessing the target multicast group a, and assuming that two ues, that is, a ue a and a ue b, have accessed the target multicast group a, the ue a and the ue b are devices in the same group, and the number of devices in the same group is 2.

S403: when N is larger than or equal to 1, determining a first target access device meeting conditions for the current user device from various broadband access devices of the system so as to ensure that at least two devices in the same group are accessed to the same broadband access device after the current user device is accessed to the first target access device.

And determining the number N of the devices in the same group, and when N is more than or equal to 1, namely when at least one user device has access to a target multicast group, determining a first target access device meeting the conditions for the current user device from the broadband access devices in the system by the access management device. It should be noted that satisfying the conditions includes: after the current user equipment is accessed to the first target access equipment, at least two same-group equipment in the system are accessed to the same broadband access equipment.

For a better understanding, the following is illustrated with specific examples:

assuming that N is 1, that is, the number of the user equipments accessing the target multicast group in the current system is only 1, and assuming that the number of the user equipments is user equipment m, the access management apparatus directly uses the broadband access equipment (assuming that the broadband access equipment k) connected to the user equipment m as the first target access equipment at this time. That is, both the current ue and the ue m access to the same multicast group (target multicast group) through the same broadband access device. Thus, when N is equal to 1, after the current ue accesses the first target access device (broadband access device k), there are at least two devices in the same group (i.e. the current ue and the ue m) in the system accessing the same broadband access device (broadband access device k).

The broadband access device k provides data service for the current user device and the user device m at the same time, and specifically, the broadband access device k accesses to the target multicast group through the upstream core router thereof. At this time, the core router only needs to copy one part of multicast message of the target multicast group and send the copied part of multicast message to the broadband access device k, and the line bandwidth resource between the core router and the broadband access device only needs to occupy one part of bandwidth of the multicast message. The situation that the existing multicast traffic management scheme directly accesses to the target multicast group through the initial access device, which may cause that each user device accessing to the same multicast group accesses through different broadband access devices, is avoided, for example, there exists a user device m that has accessed to the target multicast group at present, and the user device accesses to the target multicast group through a broadband access device k, and the existing scheme may access to the target multicast group through the initial access device (assumed to be i), at this time, that is, the user device m accesses to the target multicast group through the broadband access device k, and the current user device accesses to the target multicast group through the initial access device i. The two multicast groups are accessed to the same multicast group through different broadband access devices, at the moment, the core router needs to copy two multicast messages aiming at the target multicast group at the same time, one multicast message is sent to a broadband access device k and then sent to a user device m through the broadband access device k, and the other multicast message is sent to a broadband access device i and then sent to the current user device through the broadband access device i. The processing load of the core router will certainly increase, and the occupation of the line bandwidth resources will also increase.

If N > 1, it indicates that the user equipments that have accessed to the target multicast group in the current system include at least 2, and at this time, the access management apparatus may have the following two processing cases:

first, if there are at least 2 user equipments currently accessed to the target multicast group, and there are already 2 or more user equipments accessed to the same broadband access equipment, at this time, it is already ensured that at least two same group equipments in the system access to the same broadband access equipment, and the access management apparatus can select any one broadband access equipment from the system as the first target access equipment. That is, it is determined whether the number M of broadband access devices that have accessed the target multicast group is less than the number N of devices in the same group, and if so, it indicates that at least 2 user devices are accessed to the same broadband access device. It should be understood that the number M of broadband access devices accessing the target multicast group can only be equal to the number N of devices in the same group at most, but cannot be greater than N, that is, it is generally impossible for a user equipment to connect to two broadband access devices at the same time.

Further, it is assumed that the user equipment currently accessed to the target multicast group includes two user equipments, namely, user equipment 11 and user equipment 12, and at this time, if both the user equipment 11 and the user equipment 12 are accessed to the target multicast group through the same broadband access equipment 21, any one broadband access equipment in the system may be selected as the first target access equipment; or, the same broadband access device 21 connected to the user device 11 and the user device 12 may be directly selected as the first target access device, and at this time, the core router only needs to copy one multicast packet for the target multicast group to the same broadband access device 21, so as to reduce the processing load of the core router to the maximum extent and reduce the occupation of the bandwidth resources to the maximum extent.

In some examples, it is assumed that the ue currently accessing the target multicast group includes three ues, i.e., ue 11, ue 12 and ue 13, and both ue 11 and ue 12 access the target multicast group through the same broadband access device 21, and ue 13 accesses the target multicast group through the broadband access device 22, at this time, at least two devices in the same group (ue 11 and ue 12) in the system have been guaranteed to access the same broadband access device 21, so that any one of the broadband access devices (including broadband access devices 21 and 22, of course) may be selected from the system as the first target broadband access device.

Further, any one of the broadband access devices 21 and 22 may be selected as the first target broadband access device. At this time, the number of multicast groups accessed by each of the broadband access devices 21 and 22 may be further determined, and one broadband access device with the smallest number of access multicast groups may be selected as the first target access device. It should be understood that it is determined that the broadband access devices 21 and 22 do not necessarily access only the target multicast group, and may also access other multicast groups, at this time, one broadband access device with the smallest number of access multicast groups is selected from the broadband access devices 21 and 22 as the first target access device, for example, the number of multicast groups accessed by the broadband access device 21 is 3, and the number of multicast groups accessed by the broadband access device 22 is 1 (that is, only access to the target multicast group), and then the broadband access device 22 may be selected as the first target access device, so as to implement load balancing.

If the number of multicast groups accessed by the broadband access devices 21 and 22 is the same, the broadband access device with the smallest number of user devices may be further selected as the first target access device according to the number of user devices carried by each broadband access device.

In some examples, when the ue 11, the ue 12, and the ue 13 all access to the target multicast group through the same broadband access device (assumed as the broadband access device 23), at least two devices in the same group in the system are also guaranteed to access the same broadband access device. Then any one of the broadband access devices (including, of course, broadband access device 23) is selected from the system as the first target access device. Further, the broadband access device 23 may be directly used as the first target access device, so that the core router only needs to copy one multicast packet for the target multicast group to the same broadband access device 23, thereby reducing the processing load of the core router to the maximum extent and reducing the occupation of the bandwidth resources to the maximum extent.

Secondly, when at least 2 pieces of user equipment which have been accessed to the target multicast group do not have 2 pieces of user equipment which are accessed to the same broadband access equipment, that is, one piece of user equipment is correspondingly connected with the unused broadband access equipment.

For example, there are currently two devices in the same group, that is, the user device 11 and the user device 12, and the broadband access devices connected to the two devices are not the same broadband access device, and it is assumed that the broadband access devices 24 and 25 access the target multicast group respectively, at this time, one of the broadband access devices 24 and 25 needs to be selected as the first target broadband access device, so as to ensure that at least two user devices accessing the target multicast group are performed through the same broadband access device. For example, if the broadband access device 24 is selected as the first target access device, then there is a target multicast group to which the user device 11 and the current user device are accessed through the same broadband access device 24. The processing load of the core router is effectively reduced.

Further, when one of the broadband access devices 24 and 25 is selected as the first target broadband access device, the broadband access device with the minimum number of access multicast groups or the minimum number of the carried user devices may also be used as the first target broadband access device according to the number of access multicast groups or the number of the carried user devices of the broadband access devices 24 and 25.

In some examples, for example, there are three peer devices, respectively the user device 11, the user device 12, and the user device 13, which are not the same broadband access device, and assuming that the target multicast group is accessed through the broadband access devices 26, 27, and 28, respectively, one of the broadband access devices 26, 27, and 28 needs to be selected as the first target broadband access device to ensure that at least two user devices accessing the target multicast group are performed through the same broadband access device. At this time, any one of the broadband access devices may be selected, or the selection may be performed according to the number of multicast groups accessed by each broadband access device and the number of user devices carried by each broadband access device, which is not described herein again.

In the process of selecting the first target access device according to the number of multicast groups accessed by the broadband access device or the number of user devices carried by the broadband access device, it may also be determined whether the number of multicast groups currently accessed by the broadband access device reaches a set threshold, specifically including:

for example, if the same group of devices currently accessing the target multicast group includes the user devices 14 and 15, the user device 14 accesses the target multicast group through the broadband access device 29, and the user device 15 accesses the target multicast group through the broadband access device 30, if it is determined that the multicast groups accessed by the broadband access devices 29 and 30 are both 10, the set multicast group number access threshold is reached, and at this time, another broadband access device may be selected as the first target broadband access device.

S404: and informing the first target access equipment to access the target multicast group so as to provide the content information corresponding to the target multicast group for the current user equipment.

And informing the first target to access the target multicast group so as to provide the content information corresponding to the target multicast group for the current user equipment. The first target access device may or may not be the initial access device. When the first target access device is the initial access device, a first multicast access instruction may be sent to the first target access device to control the first target access device to access to the target multicast group, so as to provide content information corresponding to the target multicast group to the current user device. When the first target access device is not the initial access device, a second multicast access instruction may be sent to the first target access device to control the first target access device to acquire the information of the current user device, and then a connection with the current user device is established according to the information of the current user device, and the first target access device accesses the target multicast group to provide content information corresponding to the target multicast group to the current user device.

Meanwhile, when the first target access device is not the initial access device, a device migration instruction may be sent to the initial access device to control the initial access device to disconnect from the current user device. In some examples, the initial access device may not be used, and the initial access device is automatically triggered to disconnect from the current user equipment when a preset period is reached.

In some examples, before determining the number N of devices in the same group according to the information of the target multicast group, it is further required to determine that no multicast group that has been accessed exists in the current user device. If the current user equipment has the accessed multicast group, and requests to access a new target multicast group at the moment, namely the user wants to simultaneously access two multicast groups, namely the user wants to simultaneously watch the program contents of two television channels, but at present, one user equipment can only be simultaneously connected with one broadband access equipment, and at the moment, the user equipment directly accesses the target multicast group through the currently connected broadband access equipment.

It should be noted that when N is 0, that is, there is no user equipment currently accessing to the target multicast group in the system, at this time, the number of multicast groups accessed by each broadband access device in the system or the number of user equipment carried by each broadband access device may be determined, and the broadband access device with the minimum number of multicast groups accessed or the minimum number of user equipment carried by each broadband access device is used as the second target access device, and the second target access device is notified to access to the target multicast group, so as to provide content information corresponding to the target multicast group to the current user equipment.

Example three:

the embodiment of the present invention mainly stands on a target access device side, and provides an access management method, which mainly includes the following steps, as shown in fig. 5:

s501: and receiving a second multicast access instruction sent by the access management device.

S502: and acquiring the current user equipment information according to the second multicast access instruction.

The target access device may receive a second multicast access instruction issued by the access management apparatus, and obtain the current user equipment information according to the second multicast access instruction. It should be understood that, in the first embodiment, the second embodiment and the third embodiment, the current user equipment refers to the same user equipment, and the access management methods described in the three embodiments may constitute an access management method of an access management system.

In this embodiment, the current ue information refers to various information required when the broadband access device establishes a connection channel with the current ue, including but not limited to a current ue IP address, a target multicast group IP address requested to access, and authorization information for accessing the target multicast group.

S503: and establishing connection with the current user equipment according to the information of the current user equipment, and accessing the target multicast group to provide content information corresponding to the target multicast group for the current user equipment.

And establishing a connection channel with the current user equipment according to the acquired information of the current user equipment, and accessing a target multicast group to provide content information corresponding to the target multicast group for the current user equipment.

In this embodiment, the obtaining of the current ue information according to the second multicast access instruction may specifically be performed in the following two ways:

and in the first mode, the second multicast access instruction is analyzed, and the current user equipment information is obtained from the second multicast access instruction. At this time, the access management device is required to carry the corresponding current ue information in the second multicast access instruction. The access management device may obtain, from the initial access device, information related to the current user equipment based on a connection channel with the initial access device.

And secondly, searching the current user equipment information from the user equipment database according to the second multicast access instruction. At this time, the second multicast access command should include the current user equipment IP information, so as to search from the user equipment database according to the current user IP information. When the initial access device is connected to the current user device, the initial access device may allocate a corresponding IP address and authorization information of the target multicast group to the current user device, and store the current user device information in the user device database, so that the current user device information is acquired by the target access device when device migration occurs.

Example four:

an embodiment of the present invention mainly stands on an access management system, and provides an access management method, where the structure of the access management system is shown in fig. 6, and the access management system mainly includes an initial access device 61, an access management device 62, a target access device 63, a core router 64, a user equipment database 65, and an IPTV service source 66.

The access management method mainly includes the following steps, please refer to fig. 7:

s701: the initial access equipment receives a first request which is sent by current user equipment and used for requesting to access to a target multicast group.

When the initial access device establishes a connection channel with the current user device, the information of the current user device can be uploaded to a user device database for backup storage.

S702: and the initial access equipment generates an equipment reselection request according to the first request, wherein the equipment reselection request can represent the information of the target multicast group which the current user equipment requests to access.

S703: and the initial access equipment sends the equipment reselection request to an access management device.

S704: the access management device receives a device reselection request sent by initial access equipment, wherein the device reselection request can represent information of a target multicast group which is requested to be accessed by current user equipment.

S705: and the access management device determines the number N of devices in the same group according to the information of the target multicast group, wherein the devices in the same group are the user devices which have access to the target multicast group in the system.

S706: when N is larger than or equal to 1, determining a first target access device meeting conditions for the current user device from various broadband access devices of the system so as to ensure that at least two devices in the same group are accessed to the same broadband access device after the current user device is accessed to the first target access device.

For the process of selecting the first target access device, refer to the description in the third embodiment, and are not described herein again.

S707: and informing the first target access equipment to access the target multicast group so as to provide the content information corresponding to the target multicast group for the current user equipment.

S708: when receiving the notification, the first target access device accesses the target multicast group to provide the content information corresponding to the target multicast group for the current user device.

It should be noted that the first target access device may or may not be the initial access device. When the first target access device is the initial access device, a first multicast access instruction may be sent to the first target access device to control the first target access device to access to the target multicast group, so as to provide content information corresponding to the target multicast group to the current user device. When the first target access device is not the initial access device, a second multicast access instruction may be sent to the first target access device to control the first target access device to acquire the information of the current user device, and then a connection with the current user device is established according to the information of the current user device, and the first target access device accesses the target multicast group to provide content information corresponding to the target multicast group to the current user device. That is, the notification of the access management device to the first target access device in step S707 may include a first multicast access instruction and a second multicast access instruction.

For the above execution steps, please refer to the description of the first to third embodiments, which is not repeated herein.

Example five:

for better understanding of the present invention, the present embodiment describes the processing flow of the access management apparatus in detail from the practical application point of view:

first, a scheduling policy of the access management device is configured, for example, management scheduling is implemented according to the number of multicast groups.

And step two, configuring an uploading channel between the broadband access equipment and the access management device, and generating an equipment statistical table according to the broadband access equipment IP connected to the access management device. The device statistics table records broadband access device information managed by the access management device, such as broadband access device IP, the number of multicast groups accessed, and the current user device count. As shown in table 1:

table 1: equipment statistical table

And thirdly, receiving a device reselection request sent by the initial access device, and acquiring a current user device IP requesting to access a target multicast group and the target multicast group IP, wherein the target multicast group IP address represents a multicast group requested to be added by the current user device. In addition, the IP address of the initial access equipment is obtained according to the uploading channel between the initial access equipment and the access management device.

And fourthly, searching a user multicast table according to the IP address of the current user equipment, wherein the user multicast table records the corresponding relation between each user equipment of the system and the joined multicast group, and the user multicast table comprises the corresponding relation between the IP of the current user equipment and the multicast group. As shown in table 2:

table 2: user multicast table

The possible results and corresponding processing for searching the user multicast table are as follows:

results 4.1: according to the current user equipment IP, if the corresponding current user equipment is not found in the user multicast list, the current user equipment is not added into any multicast group at present, and the access management device adds a relation table item between the current user equipment IP and the target multicast group IP in the user multicast list. Then, the next step (i.e., the fifth step) of processing is performed.

Results 4.2: according to the current user equipment IP, if the corresponding current user equipment is found in the user multicast list, but no specified multicast group is found in the multicast group corresponding to the hit list item, which indicates that the current user equipment does not join the specified multicast group at present. The access management device adds the corresponding target multicast group IP in the user multicast table. Then, the next step (i.e., the fifth step) of processing is performed.

Results 4.3: according to the current user equipment IP, if the current user equipment IP and the corresponding multicast group IP are found in the user multicast list, the user is considered to have joined the specified multicast group, the processing is finished, and the next step of processing is not carried out.

And fifthly, searching the multicast equipment table according to the IP address of the target multicast group, and searching the user equipment table according to the current user equipment IP.

The multicast device table records the corresponding relation between each multicast group and the broadband access device in the system, and also can contain the statistics of the number of the user devices added in each multicast group. As shown in table 3.

Table 3: multicast equipment table

The user equipment list records the broadband access equipment connected with each current user equipment, and the user equipment list comprises the one-to-one corresponding relation between the IP of the current user equipment and the broadband access equipment. As shown in table 4.

Table 4: user equipment meter

The possible results and corresponding processing for looking up the multicast device table and the user device table are as follows:

results 5.1: according to the IP address of the target multicast group, if the target multicast group is not found in the multicast equipment list, the fact that no broadband access equipment informs an upstream CR to join the target multicast group through a multicast routing protocol is indicated, then the user equipment list is found according to the current user equipment IP, if the broadband access equipment corresponding to the current user equipment IP is not found in the user equipment list, the target access equipment is selected according to a scheduling strategy, and one broadband access equipment with the minimum access multicast group number is selected from all broadband access equipment contained in the equipment statistical list; if the multicast groups are the same, selecting the broadband access equipment with the minimum number of the carried user equipment; if the number of the bearing user equipment is the same, the broadband access equipment with the minimum IP address or the maximum IP address is selected. The access management device informs the selected target access device to access the target multicast group through the issuing channel, the informing message contains the target multicast group IP, after the target access device receives the informing message issued by the access management device, the target access device informs the upstream CR to add the appointed target multicast group through the multicast routing protocol, then adds the target multicast group and the corresponding item of the target access device in the multicast device table, and adds the current user device number statistics. If the initial access device is not consistent with the currently selected target access device, the initial access device is required to be informed to perform multicast access user migration through the issuing channel, the multicast access user migration is not performed from the initial access device to the currently selected target access device, and then a corresponding table item between the current user device and the target access device is added in the user device table if the initial access device is consistent with the currently selected target access device.

Results 5.2: according to the multicast IP address, if the target multicast group is not found in the multicast device table, and the broadband access device corresponding to the current user device IP is found in the user device table, it indicates that the current user device is simultaneously added to a certain multicast group, and the user device is expected to be added to the target multicast group (this is a special application scenario, and the common situation is that the current user device is not simultaneously added to a plurality of multicast groups, that is, a plurality of television channels are not simultaneously watched), in this case, the access management device only needs to inform the broadband access device connected with the current user device to issue a multicast route, add the target multicast group, and the current user device does not need to migrate, then add the corresponding entries of the target multicast group and the broadband access device in the multicast device table, and add the user device number statistics.

Results 5.3: according to the multicast IP address, if the target multicast group is found in the multicast device list, the user device list is found according to the current user device IP, the broadband access device corresponding to the current user device IP is not found in the user device list, the broadband access device found in the multicast device list is selected as the target access device of the current user device, if the initial access device is inconsistent with the currently selected target access device, the initial access device is required to be informed to perform multicast access user migration through a sending channel, the multicast access user migration is performed from the initial access device to the currently selected target access device, if the initial access device is consistent with the currently selected target access device, the multicast access user migration is not performed, and then the corresponding table entry of the current user device and the target access device is added in the user device list.

Results 5.4: according to the IP address of the target multicast group, if the specified multicast group is found in the multicast equipment list, the user equipment list is found according to the current user equipment IP, and the broadband access equipment corresponding to the current user equipment IP is also found in the user equipment list, which indicates that the current user equipment already joins a certain multicast group and simultaneously hopes to join the target multicast group. In this case, the access management device only needs to notify the broadband access device where the current user device is located to issue the multicast route, join the target multicast group, the current user device does not need to migrate, then add the broadband access device in the searched multicast device entry, and add the current user device number statistics.

According to the situation processing, when the user equipment added to the target multicast group is determined to exist, the broadband access equipment connected with the user equipment is directly used as the target access equipment to add the current user equipment to the target multicast group, so that the processing load of the core router is reduced as much as possible, and the occupation of line bandwidth resources between the core router and the broadband access equipment is reduced. For special situations (the same user equipment is added into a plurality of multicast groups at the same time) in practical application, the access management device can directly control the broadband access equipment connected with the current user equipment to access the target multicast group, so that a plurality of different television programs can be watched at the same time, and the requirements of specific users are met.

And sixthly, receiving a multicast leaving message sent by the broadband access equipment, and acquiring the IP address of the current user equipment and the IP address of a multicast group, wherein the IP address of the multicast group represents the multicast group which the current user equipment requests to leave. In addition, the IP address of the broadband access equipment is obtained according to the uploading channel between the broadband access equipment and the access management device. According to the current user equipment IP, if the corresponding current user equipment is not found in the user multicast list, or the corresponding current user equipment is found, but the current user equipment is not found to join the specified multicast group, the user leaves the specified multicast group and the processing is not continued. However, if the current user equipment and the corresponding multicast group are found in the user multicast table, the corresponding entry in the current user equipment table is deleted. Searching a multicast equipment table according to the multicast IP, subtracting 1 from the current user equipment number in the corresponding multicast IP table item, indicating that no user equipment is added into the specified multicast group under the condition that the operation result is 0 after the current user equipment user number is subtracted by 1, informing the corresponding broadband access equipment to leave the multicast group, and informing the CR of leaving the specified multicast group by the broadband access equipment through a multicast routing protocol. When the operation result is not 0, it indicates that other users join the specified multicast group, the multicast device table entry is not deleted, and the broadband access device does not leave the multicast group. After this step is completed, if the number of multicast groups or the number of current user equipments changes, the equipment statistics table needs to be updated in time.

For a more detailed description, please refer to fig. 8:

step S801: starting the access management device on the physical server or virtual machine of the data center, and configuring the scheduling policy of the access management device to select the target access device according to the number of the accessed multicast groups.

Step S802: configuring an access management device and BRAS equipment to establish a VxLAN (Virtual Extensible LAN) tunnel, configuring a source IP of the VxLAN tunnel as a BRAS equipment interface IP at a BRAS end, and configuring a target IP as the access management device interface IP; and the source IP of the VxLAN tunnel configured at the access management device end is an access management device interface IP, and the destination IP is a BRAS equipment interface IP.

Step S803: and configuring the access management device as a NETCONF client to connect the BRAS equipment.

Step S804: and each BRAS device is configured with PPPoE user access authentication and multicast service authorization.

Step S805: the set-top box sends PPPoE protocol message, requests access to all BRAS equipment, and after the authentication of the BRAS1 equipment is passed, acquires the IP address distributed by the BRAS1 and the authority of authorizing access to multicast service. The BRAS1 device then writes the user equipment information into the user equipment database, including the user's IP address, session ID, MAC address, etc. The user equipment information is used to recover on other BRAS equipment to access the service without the user needing to redial authentication.

Step S806: the set-top box sends IGMP message to BRAS1 to inform BRAS1 device to join target multicast group. And the BRAS1 equipment packages the IGMP message into the VxLAN tunnel and sends the VxLAN tunnel to the access management device.

Step S807: the access management device analyzes the IGMP message, acquires the current set-top box IP address (for example: 10.46.114.5) and the target multicast group IP (for example: 224.7.8.33), and acquires the broadband access equipment IP address (for example: 192.168.3.3) through the VxLAN tunnel uploading the IGMP message.

Step S808: the access management device searches the user multicast table, and if the corresponding set-top box IP and the target multicast group IP are not found, the entry is newly added in the user multicast table (set-top box IP: 10.46.114.5, target multicast group IP: 224.7.8.33). As shown in table 5 below:

TABLE 5

Multicast user IP	Multicast group
		10.46.102.2	224.5.6.102
10.46.116.5	224.0.2.87
		10.46.114.5 (New)	224.7.8.33 (New)

Step S809: the access management device searches the multicast device table and the user device table, if none of the corresponding entries is found, searches the device statistics table, and selects the broadband access device (e.g., 192.168.5.5) with the least number of access multicast groups as the target access device according to the scheduling policy, as shown in table 6 below. The access management device informs the selected target access device of the newly added multicast group (for example: 224.7.8.33) through the NETCONF channel. After receiving the notification, the target access device notifies the CR to join the target multicast group through a multicast routing protocol, for example, using a multicast routing protocol PIM-SM.

TABLE 6

Broadband access equipment	Number of multicast groups	Number of multicast subscribers
			192.168.3.3(BRAS1)	1	1
192.168.4.4(BRAS2)	1	1
			192.168.5.5(BRAS3)	0	0

Step S810: the access management device adds entries in the multicast device table and the user device table, and adds the statistical count in the device statistical table. See tables 7, 8, and 9, below, respectively:

TABLE 7

TABLE 8

Multicast user IP	Broadband access equipment
		10.46.102.2	192.168.3.3
10.46.116.5	192.168.4.4
		10.46.114.5 (New)	192.168.5.5 (New)

TABLE 9

Broadband access equipment	Number of multicast groups	Number of multicast subscribers
			192.168.3.3(BRAS1)	1	1
192.168.4.4(BRAS2)	1	1
			192.168.5.5(BRAS3)	1 (newly increased)	1 (newly increased)

Step S811: since the broadband access device (e.g., 192.168.3.3) initially accessed by the multicast user is not consistent with the currently selected broadband access device (e.g., 192.168.5.5), the set-top box device (e.g., 10.46.114.5) needs to be migrated to the currently selected target access device. And the access management device informs the initial access equipment to delete the set-top box equipment through a NETCONF channel. Then, the selected target access device is informed to acquire user device information from the user device database according to the set-top box IP, and the user access service is recovered.

In some examples, the specific processing procedure can also be seen in fig. 9, including the following steps:

step S901: and starting the access management device on a physical server or a virtual machine of the data center, and configuring a scheduling policy of the access management device to select target access equipment according to the number of the loaded user equipment.

Step S902: and configuring an access management device to start an OpenFlow service, configuring and connecting the OpenFlow service at a BRAS device end, and establishing an OpenFlow channel with a source IP as a BRAS device interface IP and a target IP as an access management device interface IP.

Step S903: and each BRAS device is provided with IPoE user access authentication and multicast service authorization.

Step S904: the set-top box sends a DHCP protocol message to request access to all BRAS equipment, after the authentication of the BRAS1 equipment is passed, namely the BRAS1 is initial access equipment, the set-top box obtains an IP address distributed by the BRAS1 and authorization access multicast service authority.

Step S905: the set-top box sends an IGMP message to inform the BRAS1 device to join the designated multicast group. The BRAS1 equipment encapsulates the IGMP message into a PACKET _ IN message defined by the OpenFlow protocol, and sends the PACKET _ IN message to the access management device.

Step S906: the access management device parses the IGMP message to obtain the set-top box IP address (e.g., 10.46.124.6) and the target multicast group IP (e.g., 224.7.8.33), and the PACKET _ IN message source IP address is the initial access device IP address (e.g., 192.168.3.3).

Step S907: the access management device searches the user multicast table, and if the corresponding set-top box IP and the target multicast group IP are not found, newly adds an entry (the set-top box IP: 10.46.124.6 and the target multicast group IP: 224.7.8.33) in the user multicast table. As in table 10 below:

watch 10

Multicast user IP	Multicast group
		10.46.102.2	224.5.6.102
10.46.116.5	224.0.2.87
		10.46.114.5	224.7.8.33
10.46.124.6 (New)	224.7.8.33 (New)

Step S908: the access management device searches the multicast equipment list and the user equipment list, and finds the item corresponding to the target multicast group IP in the multicast equipment list, but does not find the item corresponding to the set-top box IP in the user equipment list, which indicates that the current set-top box does not join the target multicast group, and other users join the target multicast group. At this time, in order to prevent users joining the same multicast group from being scattered to too many different BRAS devices, a CR copies multiple multicast data to be distributed to the BRAS devices where the respective users are located. In this case, the access management device will migrate the newly added set-top box to the broadband access device where the target multicast group is located.

Step S909: the access management apparatus adds an entry to the user equipment table (table 12), and adds a count to the device count table (table 13) and the multicast device table (table 11).

TABLE 11

TABLE 12

Multicast user IP	Broadband access equipment
		10.46.102.2	192.168.3.3
10.46.116.5	192.168.4.4
		10.46.114.5	192.168.5.5
10.46.124.6 (New)	192.168.5.5 (New)

Watch 13

Broadband access equipment	Number of multicast groups	Number of multicast subscribers
			192.168.3.3(BRAS1)	1	1
192.168.4.4(BRAS2)	1	1
			192.168.5.5(BRAS3)	1	1+1＝2

Step S910: because the original access device (e.g., 192.168.3.3) is not consistent with the target access device (e.g., 192.168.5.5) that is now selected, the set-top box (e.g., 10.46.124.6) needs to be migrated to the target access device that is currently selected. The access management device acquires the user equipment information from the initial access equipment through an EXPERIMENT message defined by an OpenFlow protocol, and then informs the initial access equipment to delete the user. Then, the selected target access device is informed to recover the user access service according to the user device information sent by the access management device. The IP address of the set-top box is contained in the EXPERIMENT message interacted between the access management device and the BRAS equipment.

Example six:

the initial access device 100, as shown in fig. 10, includes a first receiving module 1001, a first processing module 1002, and a first sending module 1003.

The first receiving module 1001 is configured to receive a first request for requesting access to a target multicast group, where the first request is sent by a current user equipment; the first processing module 1002 generates a device reselection request according to the first request, where the device reselection request can represent information of a target multicast group to which the current user equipment requests to access; the first sending module 1003 sends the device reselection request to the access management apparatus.

In some examples, after the first sending module 1003 sends the device reselection request to the access management apparatus, the first receiving module 1001 is further configured to receive a device migration instruction sent by the access management apparatus based on the device reselection request; the first processing module 1002 is further configured to disconnect the current user equipment according to the device migration instruction.

In some examples, the first receiving module 1001 is further configured to receive a first multicast access instruction sent by the access management apparatus based on the device reselection request; the first processing module 1002 is further configured to access the target multicast group according to the first multicast access instruction, so as to provide content information corresponding to the target multicast group to the current user equipment.

Referring to fig. 11, the access management apparatus 110 includes a second receiving module 111, a second processing module 112, and a second sending module 113.

The second receiving module 111 is configured to receive an equipment reselection request sent by an initial access equipment, where the equipment reselection request can represent information of a target multicast group to which a current user equipment requests to access; the second processing module 112 is configured to determine, according to the information of the target multicast group, the number N of devices in the same group, where the devices in the same group are user devices that have access to the target multicast group in the system; when N is determined to be more than or equal to 1, determining first target access equipment meeting conditions for the current user equipment from various broadband access equipment of the system so as to ensure that at least two same-group equipment are accessed to the same broadband access equipment in the system after the current user equipment is accessed to the first target access equipment; the second sending module 113 is configured to notify the first target access device to access the target multicast group, so as to provide content information corresponding to the target multicast group to the current user device.

The second processing module 112 is further specifically configured to determine whether the number M of broadband access devices that have accessed the target multicast group is less than the number N of devices in the same group; if yes, selecting any broadband access device from the system as the first target access device; if not, selecting any broadband access device from the M broadband access devices as the first target access device.

When the second processing module 112 performs the step of selecting any one broadband access device from the system as the first target access device, it may further select any one broadband access device from the M broadband access devices as the first target access device.

Further, when the second processing module 112 performs the step of selecting any one broadband access device from the M broadband access devices as the first target access device, it may further obtain, when M is greater than or equal to 2, the number of multicast groups accessed by each broadband access device in the M broadband access devices, and select one broadband access device with the smallest number of access multicast groups as the first target access device;

or when M is larger than or equal to 2, acquiring the number of user equipment borne by each broadband access equipment in the M broadband access equipment, and selecting the broadband access equipment bearing the minimum number of the user equipment as the first target access equipment.

The second processing module 112 may be further configured to, when it is determined that N is 0, determine the number of multicast groups accessed by each broadband access device in the system or the number of user devices carried by each broadband access device, use the broadband access device with the minimum number of multicast groups accessed or the minimum number of user devices carried by the broadband access device as a second target access device, and notify the second target access device to access the target multicast group, so as to provide content information corresponding to the target multicast group to the current user device.

In some examples, the access management apparatus 110 may further include a first determining module 114, please refer to fig. 12, where the first determining module 114 is configured to determine whether the current user equipment has a multicast group for access after the second receiving module 111 receives the device reselection request and before the second processing module 112 selects the first target access device, and if it is determined that the current user equipment does not have the multicast group, notify the second processing module to perform subsequent processing; the second processing module 112 may also be informed of the determination if it exists.

Referring to fig. 13, the target access device 130 includes a third receiving module 131, a first obtaining module 132, and a third processing module 133.

The third receiving module 131 is configured to receive a second multicast access instruction issued by the access management apparatus; the first obtaining module 132 is configured to obtain current ue information according to the second multicast access instruction; the third processing module 133 is configured to establish a connection with the current user equipment according to the information of the current user equipment acquired by the first acquiring module 132, and access the target multicast group, so as to provide content information corresponding to the target multicast group to the current user equipment.

The first obtaining module 132 is configured to obtain the current ue information according to the second multicast access instruction, where the obtaining includes: analyzing the second multicast access instruction to obtain the current user equipment information; or, searching the current user equipment information from a user equipment database. Wherein the current user equipment information includes, but is not limited to, a current user equipment IP address, a target multicast group IP address requested to access, and authorization information for accessing the target multicast group.

Based on the initial access device, the access management device and the target access device provided by the embodiment of the invention, when the number N of the same-group devices accessing the target multicast group is more than or equal to 1, the system has at least two same-group devices accessing the same broadband access device, compared with the situation that each user device accessing the same multicast group in the existing system passes through different broadband access devices, the times of copying the multicast message of the target multicast group by the core router are effectively reduced, the processing load of the core router is reduced, the occupation of the line bandwidth resource is further effectively relieved, the development of high-quality multicast service is facilitated, and the multicast system is also facilitated to accommodate more users while the quality of the multicast service is ensured.

Example seven:

referring to fig. 14, the initial access device includes a first processor 141, a first memory 142, and a first communication bus 143;

the first communication bus 143 is used for realizing connection communication between the first processor 141 and the first memory 142;

the first processor 141 is configured to execute one or more programs stored in the first memory 142 to implement the access management method according to the first embodiment and the corresponding steps in embodiments 4 to 5. The detailed process is not described herein.

Referring to fig. 15, the access management apparatus includes a second processor 151, a second memory 152, and a second communication bus 153;

the second communication bus 153 is used for realizing connection communication between the second processor 151 and the second memory 152;

the second processor 151 is configured to execute one or more programs stored in the second memory 152 to implement the access management method according to the second embodiment and the corresponding steps in the embodiments 4 to 5.

The embodiment of the present invention further provides a target access device, please refer to fig. 16, which includes a third processor 161, a third memory 162 and a third communication bus 163;

the third communication bus 163 is used for realizing connection communication between the third processor 161 and the third memory 162;

the third processor 161 is configured to execute one or more programs stored in the third memory 162 to implement the access management method according to the third embodiment and the corresponding steps in embodiments 4 to 5.

An embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the steps of the access management method in the first to fifth embodiments.

It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented in a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented in program code executable by a computing device, such that they may be stored on a computer storage medium (ROM/RAM, magnetic disk, optical disk) and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (14)

1. An access management method is applied to initial access equipment, and the method comprises the following steps:

receiving a first request which is sent by current user equipment and used for requesting to access to a target multicast group;

generating an equipment reselection request according to the first request, wherein the equipment reselection request can represent the information of a target multicast group which the current user equipment requests to access;

sending the equipment reselection request to an access management device, so that the access management device determines the number N of the same-group equipment according to the information of the target multicast group, wherein the same-group equipment is user equipment which has accessed the target multicast group in the system;

when N is larger than or equal to 1, determining a first target access device meeting conditions for the current user device from various broadband access devices of the system so as to ensure that at least two devices in the same group are accessed to the same broadband access device after the current user device is accessed to the first target access device.

2. The access management method of claim 1, wherein after said sending the device reselection request to the access management apparatus, further comprising:

receiving a device migration instruction sent by the access management device based on the device reselection request;

disconnecting the connection with the current user equipment according to the equipment migration instruction;

or the like, or, alternatively,

receiving a first multicast access instruction sent by the access management device based on the equipment reselection request;

and accessing to the target multicast group according to the first multicast access instruction so as to provide content information corresponding to the target multicast group for the current user equipment.

3. An access management method is applied to an access management device, and comprises the following steps:

receiving an equipment reselection request sent by initial access equipment, wherein the equipment reselection request can represent information of a target multicast group which is requested to be accessed by current user equipment;

determining the number N of devices in the same group according to the information of the target multicast group, wherein the devices in the same group are user devices which have access to the target multicast group in the system;

when N is more than or equal to 1, determining first target access equipment meeting conditions for the current user equipment from various broadband access equipment of the system so as to ensure that at least two same-group equipment in the system are accessed to the same broadband access equipment after the current user equipment is accessed to the first target access equipment;

and informing the first target access equipment to access the target multicast group so as to provide the content information corresponding to the target multicast group for the current user equipment.

4. The access management method of claim 3, wherein the determining a first target access device satisfying a condition for the current user device from among broadband access devices of the system comprises:

judging whether the number M of broadband access devices accessed to the target multicast group is smaller than the number N of devices in the same group;

if yes, selecting any broadband access device from the system as the first target access device;

if not, selecting any broadband access device from the M broadband access devices as the first target access device.

5. The access management method of claim 4, wherein said arbitrarily selecting a broadband access device from said system as said first target access device comprises:

and selecting any one broadband access device from the M broadband access devices as the first target access device.

6. The access management method according to claim 4 or 5, wherein said selecting any one broadband access device from among the M broadband access devices as the first target access device comprises:

when M is larger than or equal to 2, acquiring the number of multicast groups accessed by each broadband access device in the M broadband access devices, and selecting one broadband access device with the minimum number of access multicast groups as the first target access device;

or when M is larger than or equal to 2, acquiring the number of user equipment borne by each broadband access equipment in the M broadband access equipment, and selecting the broadband access equipment bearing the minimum number of the user equipment as the first target access equipment.

7. The access management method of claim 3, wherein the access management method further comprises:

when the N is 0, determining the number of multicast groups accessed by each broadband access device in the system or the number of user devices borne by the broadband access device, taking the broadband access device with the minimum number of the accessed multicast groups or the minimum number of the borne user devices as a second target access device, and informing the second target access device to access the target multicast group so as to provide content information corresponding to the target multicast group for the current user device.

8. The access management method according to claim 3, wherein before determining the number of devices in the same group N according to the information of the target multicast group, the method further comprises:

and judging that the current user equipment does not have an accessed multicast group.

9. An access management method is applied to a target access device, and comprises the following steps:

receiving a second multicast access instruction issued by an access management device;

acquiring current user equipment information according to the second multicast access instruction;

establishing connection with the current user equipment according to the current user equipment information, and accessing a target multicast group to provide content information corresponding to the target multicast group for the current user equipment;

the target access device determines the number N of devices in the same group according to the information of the target multicast group by the access management device, the devices in the same group are user devices which have access to the target multicast group in the system, and when N is more than or equal to 1, a first target access device meeting conditions is determined for the current user device from each broadband access device of the system, so that at least two devices in the same group are accessed to the same broadband access device after the current user device is accessed to the first target access device; and screening the first target access device as the target access device.

10. The access management method of claim 9, wherein the obtaining the current user equipment information according to the second multicast access instruction comprises:

analyzing the second multicast access instruction to obtain the current user equipment information;

or, searching the current user equipment information from a user equipment database;

the current user equipment information includes: the IP address of the current user equipment, the IP address of the target multicast group requested to be accessed and authorization information for accessing the target multicast group.

11. An initial access device includes a first processor, a first memory, and a first communication bus;

the first communication bus is used for realizing connection communication between the first processor and the first memory;

the first processor is adapted to execute one or more programs stored in the first memory to implement the steps of the access management method according to claim 1 or 2.

12. An access management device comprises a second processor, a second memory and a second communication bus;

the second communication bus is used for realizing connection communication between the second processor and the second memory;

the second processor is adapted to execute one or more programs stored in the second memory to implement the steps of the access management method according to any of claims 3-8.

13. A target access device comprising a third processor, a third memory, and a third communication bus;

the third communication bus is used for realizing connection communication between the third processor and the third memory;

the third processor is adapted to execute one or more programs stored in the third memory to implement the steps of the access management method according to claim 9 or 10.

14. An access management system comprising an initial access device as claimed in claim 11, an access management means as claimed in claim 12, and a target access device as claimed in claim 13.

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