阅读说明：本技术 卫星网络物理网元划分方法及装置、分组通信方法及系统 (Satellite network physical network element dividing method and device, and packet communication method and system ) 是由 靳韬 周江 陈波 杜武 于 2020-08-06 设计创作，主要内容包括：一种卫星网络物理网元划分方法及装置、分组通信方法及系统,方法包括：将全网网元划分为若干不同通信组；为每个受控网元对应产生一组通信组ID信息；下发对应的通信组ID信息至符合入网申请鉴权的受控网元；对受控网元的入境信令与对应通信组ID信息关系进行校验；使校验通过的受控网元的出境信令携带对应通信组ID信息；对准备建立物理信道的受控网元,校验其各自对应的通信组ID信息,若为同组,则建立物理信道,若不为同组,则放弃建立物理信道。在保障链路质量时,尽量降低发射功率,减少临近信道干扰、卫星转发器及功放负担。通过对大规模卫星网络中物理网元的逻辑划分,将一个大网划分为多个逻辑小网,从而缩小广播域,降低网元业务处理压力。(A satellite network physical network element dividing method and device, and a packet communication method and system are provided, wherein the method comprises the following steps: dividing network elements of the whole network into a plurality of different communication groups; correspondingly generating a group of communication group ID information for each controlled network element; issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication; checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group; enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group; and for the controlled network elements ready for establishing the physical channel, checking the ID information of the communication groups corresponding to the controlled network elements, if the controlled network elements are in the same group, establishing the physical channel, and if the controlled network elements are not in the same group, abandoning the establishment of the physical channel. When the link quality is guaranteed, the transmitting power is reduced as much as possible, and the adjacent channel interference, the satellite transponder and the power amplifier burden are reduced. A large network is divided into a plurality of small logical networks by logically dividing physical network elements in a large-scale satellite network, so that a broadcast domain is reduced, and the network element service processing pressure is reduced.)

1. A method for dividing physical network elements of a satellite network is characterized by comprising the following steps:

dividing network elements of the whole network into a plurality of different communication groups;

correspondingly generating a group of communication group ID information for each controlled network element;

issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication;

checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

and enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group.

2. The method of claim 1, wherein each set of said communication group ID information comprises two parts: the current level group and the lower level group.

3. The method for dividing a physical network element of a satellite network according to claim 1, wherein:

the inbound signaling refers to signaling sent from each controlled network element to the network control system NCS;

the outbound signaling refers to signaling sent from the NCS to each controlled network element.

4. A satellite network physical network element partitioning apparatus, comprising:

the grouping unit is used for dividing the network elements of the whole network into a plurality of different communication groups;

an information generating unit, configured to generate a set of communication group ID information for each controlled network element;

the issuing unit is used for issuing the corresponding communication group ID information to the controlled network element which accords with the network access application authentication;

the checking unit is used for checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

and the outbound unit is used for enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group.

5. The apparatus for dividing a physical network element of a satellite network according to claim 4, wherein each group of said communication group ID information includes two parts: the current level group and the lower level group.

6. The apparatus for dividing a physical network element of a satellite network according to claim 4, wherein:

the inbound signaling refers to signaling sent from each controlled network element to the network control system NCS;

the outbound signaling refers to signaling sent from the NCS to each controlled network element.

7. A method of satellite network packet communication, comprising the steps of:

dividing network elements of the whole network into a plurality of different communication groups;

correspondingly generating a group of communication group ID information for each controlled network element;

issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication;

checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group;

and for the controlled network elements ready for establishing the physical channel, checking the ID information of the communication groups corresponding to the controlled network elements, if the controlled network elements are in the same group, establishing the physical channel, and if the controlled network elements are not in the same group, abandoning the establishment of the physical channel.

8. The satellite network packet communication method according to claim 7,

each set of the communication group ID information includes two parts: a current group and a next group;

when resource allocation/resource broadcasting is carried out:

for the local-level controlled network element sending the resource application, checking the relation between the inbound signaling carried by the local-level controlled network element and the corresponding local-level group communication group ID information;

distributing resources to the local controlled network elements passing the verification, and enabling outbound signaling of the local controlled network elements to carry corresponding local group communication group ID information;

for the current-level controlled network element and the subordinate controlled network element which are ready to establish the physical channel, whether the current-level group communication group ID information corresponding to the current-level controlled network element and the subordinate group communication group ID information corresponding to the subordinate controlled network element are in the same group or not is verified, if the current-level group communication group ID information and the subordinate group communication group ID information are in the same group, the subordinate controlled network element receives the channel resource broadcast of the current-level controlled network element, and if the current-level group communication group ID information and the subordinate group ID information are not.

9. A satellite network packet communication system, comprising:

the grouping module is used for dividing the whole network element into a plurality of different communication groups;

the information generating module is used for correspondingly generating a group of communication group ID information for each controlled network element;

the issuing module is used for issuing the corresponding communication group ID information to the controlled network element which accords with the network access application authentication;

the checking module is used for checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

the outbound module is used for enabling outbound signaling of the controlled network element passing the verification to carry corresponding communication group ID information;

and the broadcast module is used for verifying the ID information of the communication groups corresponding to the controlled network elements which are ready to establish the physical channel, establishing the physical channel if the controlled network elements are in the same group, and abandoning the establishment of the physical channel if the controlled network elements are not in the same group.

10. A satellite network communication system, comprising:

a network element of the whole network;

the network management system NMS is used for dividing the network elements of the whole network into a plurality of different communication groups and correspondingly generating a group of communication group ID information for each controlled network element; the network management system NMS is connected with each network element;

the network management system NCS is used for issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication, verifying the relation between the entry signaling of the controlled network element and the corresponding communication group ID information, and enabling the exit signaling of the controlled network element passing the verification to carry the corresponding communication group ID information; the network management system NCS is connected with the network management system NMS; the network management system NCS is connected with each network element;

when each controlled network element is ready to establish a physical channel, the ID information of the communication group corresponding to each controlled network element is checked, if the controlled network elements are in the same group, the physical channel is established, and if the controlled network elements are not in the same group, the establishment of the physical channel is abandoned.

Technical Field

The invention relates to a satellite communication technology, in particular to a method and a device for dividing a physical network element of a large-scale satellite network, and a method and a system for packet communication.

Background

In a large-scale satellite communication network, due to the large number of network elements, under the condition of ordinary star networking, a central station faces huge service processing pressure, and due to the fact that all end stations belong to a broadcast channel, the information processing pressure of the end stations is also huge, and service data which do not belong to the central station need to be actively discarded.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a physical network element dividing method and device, a packet communication method and system for a large-scale satellite network.

In order to achieve the above object, the present invention employs the following techniques:

a method for dividing physical network elements of a satellite network is characterized by comprising the following steps:

dividing network elements of the whole network into a plurality of different communication groups;

correspondingly generating a group of communication group ID information for each controlled network element;

issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication;

checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

and enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group.

Further, each set of the communication group ID information includes two parts: the current level group and the lower level group.

Further, the inbound signaling refers to signaling sent from each controlled network element to the NCS;

the outbound signaling refers to signaling sent from the NCS to each controlled network element.

A satellite network physical network element partitioning apparatus, comprising:

the grouping unit is used for dividing the network elements of the whole network into a plurality of different communication groups;

an information generating unit, configured to generate a set of communication group ID information for each controlled network element;

the issuing unit is used for issuing the corresponding communication group ID information to the controlled network element which accords with the network access application authentication;

the checking unit is used for checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

and the outbound unit is used for enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group.

Further, each set of the communication group ID information includes two parts: the current level group and the lower level group.

Further, the inbound signaling refers to signaling sent from each controlled network element to the NCS;

the outbound signaling refers to signaling sent from the NCS to each controlled network element.

A method of satellite network packet communication, comprising the steps of:

dividing network elements of the whole network into a plurality of different communication groups;

correspondingly generating a group of communication group ID information for each controlled network element;

issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication;

checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group;

and for the controlled network elements ready for establishing the physical channel, checking the ID information of the communication groups corresponding to the controlled network elements, if the controlled network elements are in the same group, establishing the physical channel, and if the controlled network elements are not in the same group, abandoning the establishment of the physical channel.

Further, each set of the communication group ID information includes two parts: the current level group and the lower level group.

Further, when resource allocation/resource broadcasting is performed:

for the local-level controlled network element sending the resource application, checking the relation between the inbound signaling carried by the local-level controlled network element and the corresponding local-level group communication group ID information;

distributing resources to the local controlled network elements passing the verification, and enabling outbound signaling of the local controlled network elements to carry corresponding local group communication group ID information;

for the current-level controlled network element and the subordinate controlled network element which are ready to establish the physical channel, whether the current-level group communication group ID information corresponding to the current-level controlled network element and the subordinate group communication group ID information corresponding to the subordinate controlled network element are in the same group or not is verified, if the current-level group communication group ID information and the subordinate group communication group ID information are in the same group, the subordinate controlled network element receives the channel resource broadcast of the current-level controlled network element, and if the current-level group communication group ID information and the subordinate group ID information are not.

A satellite network packet communication system, comprising:

the grouping module is used for dividing the whole network element into a plurality of different communication groups;

the information generating module is used for correspondingly generating a group of communication group ID information for each controlled network element;

the issuing module is used for issuing the corresponding communication group ID information to the controlled network element which accords with the network access application authentication;

the checking module is used for checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

the outbound module is used for enabling outbound signaling of the controlled network element passing the verification to carry corresponding communication group ID information;

and the broadcast module is used for verifying the ID information of the communication groups corresponding to the controlled network elements which are ready to establish the physical channel, establishing the physical channel if the controlled network elements are in the same group, and abandoning the establishment of the physical channel if the controlled network elements are not in the same group.

The invention provides a satellite network communication system, which is characterized by comprising:

a network element of the whole network;

the network management system NMS is used for dividing the network elements of the whole network into a plurality of different communication groups and correspondingly generating a group of communication group ID information for each controlled network element; the network management system NMS is connected with each network element;

the network management system NCS is used for issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication, verifying the relation between the entry signaling of the controlled network element and the corresponding communication group ID information, and enabling the exit signaling of the controlled network element passing the verification to carry the corresponding communication group ID information; the network management system NCS is connected with the network management system NMS; the network management system NCS is connected with each network element;

when each controlled network element is ready to establish a physical channel, the ID information of the communication group corresponding to each controlled network element is checked, if the controlled network elements are in the same group, the physical channel is established, and if the controlled network elements are not in the same group, the establishment of the physical channel is abandoned.

The invention has the beneficial effects that:

the invention can divide a large-scale satellite network into a plurality of communication groups, each communication group can have an independent channel resource and an independent resource management strategy, and a multi-level networking mode (tree network) can be realized; after the broadcast domain is reduced, the service processing pressure of each network element can be reduced. Flexible group relation change while preserving the capability of full network intercommunication.

Drawings

Fig. 1 is a topology structure diagram after network division is performed by the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of a satellite network physical network element dividing device.

Fig. 3 is a block diagram of an embodiment of a satellite network packet communication system.

Fig. 4 is a block diagram of an embodiment of a satellite network communication system.

Detailed Description

The invention relates to a method for dividing a physical network element of a satellite network, which comprises the following steps:

a communication group relationship configuration function and a communication group relationship change management function are provided in a network management system (hereinafter, NMS).

Dividing network elements of the whole network into a plurality of different communication groups; a set of communication group ID information is generated by the NMS for each controlled network element.

In a network control system (hereinafter, referred to as NCS), a group of GIDs (communication group IDs) are produced for each controlled network element according to the current communication group relation, and when the network elements access the network, the GIDs are distributed to each controlled network element through specific signaling according to the condition of applying authentication according to the network access.

In the NCS, the processing of the network element inbound signaling needs to be checked according to the GID, and the GID is carried in the outbound signaling, so that only the network elements in the same group can mutually establish a physical channel, thereby completing the division of the physical network elements of the satellite network.

The inbound signaling refers to signaling sent from each controlled network element to the NCS.

The outbound signaling refers to signaling sent from the NCS to each controlled network element.

Fig. 2 shows the effect of network partitioning according to the partitioning method of the present invention under one-sender multi-receiver device large-scale networking.

The configuration method comprises the following steps: and dividing the network elements of the whole network into a communication group 1 and a communication group 2 through an imaging interface of the NMS.

And (3) GID planning: each network element has a set of GIDs. Each group GID includes two parts, representing a current group and a subordinate group, respectively, hereinafter denoted as < current GID, subordinate GID >. Assuming that the master station GID is <0,1>, the gateway station GID is <1,2>, the end station GID of communication group 1 is <1,0>, and the end station GID of communication group 2 is <2,0 >.

A network access scene: a communication group relationship is obtained. Each network element sends a network access application through a signaling channel, the NCS issues the GID of the corresponding network element to the network element after performing network access authentication, and the network element succeeds in replying and completes network access.

In NCS, checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group; and enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group. Inbound signaling refers to signaling sent from each controlled network element to the NCS. The outbound signaling is signaling sent from the network control system NCS to each controlled network element. Therefore, only the network elements in the same group can mutually establish a physical channel, thereby completing the division of the physical network elements of the satellite network.

By the method described in the scheme, a large-scale satellite network can be divided into a plurality of physically isolated small networks, a hierarchical network form is formed, a broadcast domain is reduced, and the service processing pressure of each network element is reduced.

As shown in fig. 2, an embodiment of a satellite network physical network element dividing apparatus provided in the present invention is shown.

The device comprises:

the grouping unit is used for dividing the network elements of the whole network into a plurality of different communication groups;

an information generating unit, configured to generate a set of communication group ID information for each controlled network element;

the issuing unit is used for issuing the corresponding communication group ID information to the controlled network element which accords with the network access application authentication;

the checking unit is used for checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

and the outbound unit is used for enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group.

The inbound signaling refers to signaling sent from each controlled network element to the NCS.

The outbound signaling refers to signaling sent from the NCS to each controlled network element.

The device completes the function expressed by each unit through the sequential operation of the grouping unit, the information generating unit, the issuing unit, the checking unit and the outbound unit so as to complete the division of physical network elements of the satellite network, can divide a large-scale satellite network into a plurality of physically isolated small networks, forms the form of a hierarchical network, reduces the broadcast domain and reduces the service processing pressure of each network element.

The invention relates to a satellite network packet communication method, which comprises the following steps:

a communication group relationship configuration function and a communication group relationship change management function are provided in a network management system (hereinafter, NMS).

Dividing network elements of the whole network into a plurality of different communication groups; a set of communication group ID information is generated by the NMS for each controlled network element.

In a network control system (hereinafter, referred to as NCS), a group of GIDs (communication group IDs) are produced for each controlled network element according to the current communication group relation, and when the network elements access the network, the GIDs are distributed to each controlled network element through specific signaling according to the condition of applying authentication according to the network access.

In the NCS, the processing of the network element inbound signaling needs to be checked according to the GID, and the GID is carried in the outbound signaling, so that only the network elements in the same group can mutually establish a physical channel. Inbound signaling refers to signaling sent from each controlled network element to the NCS. The outbound signaling is signaling sent from the network control system NCS to each controlled network element.

And for the controlled network elements ready for establishing the physical channel, checking the ID information of the communication groups corresponding to the controlled network elements, if the controlled network elements are in the same group, establishing the physical channel, and if the controlled network elements are not in the same group, abandoning the establishment of the physical channel. Specifically, each network element performs a corresponding service action according to the currently obtained GID information, such as: the resource signaling of the broadcast channel is selectively discarded, so that network elements of different broadcast domains can operate on different broadcast channels.

Specifically, each group of the communication group ID information includes two parts: a current group and a next group;

when resource allocation/resource broadcasting is carried out:

for the local-level controlled network element sending the resource application, checking the relation between the inbound signaling carried by the local-level controlled network element and the corresponding local-level group communication group ID information; distributing resources to the local controlled network elements passing the verification, and enabling outbound signaling of the local controlled network elements to carry corresponding local group communication group ID information; for the current-level controlled network element and the subordinate controlled network element which are ready to establish the physical channel, whether the current-level group communication group ID information corresponding to the current-level controlled network element and the subordinate group communication group ID information corresponding to the subordinate controlled network element are in the same group or not is verified, if the current-level group communication group ID information and the subordinate group communication group ID information are in the same group, the subordinate controlled network element receives the channel resource broadcast of the current-level controlled network element, and if the current-level group communication group ID information and the subordinate group ID information are not.

As shown in fig. 1, the present invention is a topology structure diagram implemented according to the communication method of the present invention in a one-to-many device large-scale networking.

And dividing the network elements of the whole network into a communication group 1 and a communication group 2 through an imaging interface of the NMS.

And (3) GID planning: each network element has a set of GIDs. Each group GID includes two parts, representing a current group and a subordinate group, respectively, hereinafter denoted as < current GID, subordinate GID >. Assuming that the master station GID is <0,1>, the gateway station GID is <1,2>, the end station GID of communication group 1 is <1,0>, and the end station GID of communication group 2 is <2,0 >.

A network access scene: and acquiring a communication group relation, sending a network access application by each network element through a signaling channel, issuing the GID of the corresponding network element to the network element after the NCS performs network access authentication, and finishing network access after the network element replies successfully.

In NCS, checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group; and enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group. Inbound signaling refers to signaling sent from each controlled network element to the NCS. The outbound signaling is signaling sent from the network control system NCS to each controlled network element.

Network element resource allocation scenario:

1) the network element applies for resources:

when the network element applies for the resource, the network element carries a communication target network element ID, the NCS verifies the application validity of the end station (different groups directly reply to the application failure) according to the target network element ID and the communication group relation, and after the verification is passed, the NCS performs resource allocation and distributes resource information to the corresponding network element.

2) And (3) broadcast resource management:

the broadcast resource refers to a channel resource from the master station or the gateway station to the direction corresponding to the subordinate end station. Taking communication group 2 in fig. 1 as an example, after the gateway station allocates resources, the NCS needs to broadcast channel resources to its subordinate network element (i.e., an end station in communication group 2), and the broadcast content is the transmission resources allocated by the gateway station and communication group ID = 2; the end station of the communication group 2 checks the GID after receiving the broadcast through the signaling channel, finds that the GID is equal to the current-level GID of the end station, receives the broadcast signaling and receives the broadcast resource; meanwhile, the end station of the communication group 1 and the gateway station of the communication group 2 will also receive the broadcast signaling, but since the group ID in the signaling is different from the GID of the own level, the broadcast resource will not be received. This achieves physical isolation of communication group 1 and communication group 2 at the traffic plane.

Inter-group topology change scenario: after the communication groups are divided, the communication group relationship can be changed through an imaging interface of the NMS, the network elements in a specific communication group can be transferred to other communication groups, and the NCS can carry out resource recovery and group relationship change notification in the change process. The network element may receive the new broadcast resource after entering the new communication group, and at this time, the communication may be resumed only by performing an automatic change according to the above-described broadcast resource management.

By the method described in the scheme, a large-scale satellite network can be divided into a plurality of physically isolated small networks, a hierarchical network form is formed, a broadcast domain is reduced, and the service processing pressure of each network element is reduced.

As shown in fig. 3, an embodiment of a satellite network packet communication system provided by the present invention is shown.

The device comprises:

the grouping module is used for dividing the whole network element into a plurality of different communication groups;

the information generating module is used for correspondingly generating a group of communication group ID information for each controlled network element;

the issuing module is used for issuing the corresponding communication group ID information to the controlled network element which accords with the network access application authentication;

the checking module is used for checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group;

the outbound module is used for enabling outbound signaling of the controlled network element passing the verification to carry corresponding communication group ID information;

and the broadcast module is used for verifying the ID information of the communication groups corresponding to the controlled network elements which are ready to establish the physical channel, establishing the physical channel if the controlled network elements are in the same group, and abandoning the establishment of the physical channel if the controlled network elements are not in the same group.

Each set of the communication group ID information includes two parts: a current group and a next group; the inbound signaling refers to signaling sent from each controlled network element to the network control system NCS; the outbound signaling is signaling sent from the network control system NCS to each controlled network element.

The system completes the functions expressed by the modules through the sequential operation of the grouping module, the information generating module, the issuing module, the checking module, the outbound module and the broadcasting module so as to complete the communication after the physical network elements of the satellite network are divided.

Specifically, when the system performs resource allocation/resource broadcasting: for the local-level controlled network element sending the resource application, checking the relation between the inbound signaling carried by the local-level controlled network element and the corresponding local-level group communication group ID information; distributing resources to the local controlled network elements passing the verification, and enabling outbound signaling of the local controlled network elements to carry corresponding local group communication group ID information; for the current-level controlled network element and the subordinate controlled network element which are ready to establish the physical channel, whether the current-level group communication group ID information corresponding to the current-level controlled network element and the subordinate group communication group ID information corresponding to the subordinate controlled network element are in the same group or not is verified, if the current-level group communication group ID information and the subordinate group communication group ID information are in the same group, the subordinate controlled network element receives the channel resource broadcast of the current-level controlled network element, and if the current-level group communication group ID information and the subordinate group ID information are not.

By the system, a large-scale satellite network can be divided into a plurality of physically isolated small networks, a hierarchical network form is formed, a broadcast domain is reduced, and the service processing pressure of each network element is reduced.

Fig. 4 shows a satellite network communication system according to another embodiment of the present invention.

The device comprises:

a network element of the whole network;

the network management system NMS is used for dividing the network elements of the whole network into a plurality of different communication groups and correspondingly generating a group of communication group ID information for each controlled network element; the network management system NMS is connected with each network element;

the network management system NCS is used for issuing corresponding communication group ID information to a controlled network element which accords with the network access application authentication, verifying the relation between the entry signaling of the controlled network element and the corresponding communication group ID information, and enabling the exit signaling of the controlled network element passing the verification to carry the corresponding communication group ID information; the network management system NCS is connected with the network management system NMS; the network management system NCS is connected with each network element;

when each controlled network element is ready to establish a physical channel, the ID information of the communication group corresponding to each controlled network element is checked, if the controlled network elements are in the same group, the physical channel is established, and if the controlled network elements are not in the same group, the establishment of the physical channel is abandoned.

And dividing the network elements of the whole network into a communication group 1 and a communication group 2 through an imaging interface of the NMS.

GID planning by NMS: each network element has a set of GIDs. Each group GID includes two parts, representing a current group and a subordinate group, respectively, hereinafter denoted as < current GID, subordinate GID >. Assuming that the master station GID is <0,1>, the gateway station GID is <1,2>, the end station GID of communication group 1 is <1,0>, and the end station GID of communication group 2 is <2,0 >.

Network access management is performed through NCS: and acquiring a communication group relation, sending a network access application by each network element through a signaling channel, issuing the GID of the corresponding network element to the network element after the NCS performs network access authentication, and finishing network access after the network element replies successfully.

In NCS, checking the relation between the inbound signaling of the controlled network element and the ID information of the corresponding communication group; and enabling the outbound signaling of the controlled network element passing the verification to carry the ID information of the corresponding communication group. Inbound signaling refers to signaling sent from each controlled network element to the NCS. The outbound signaling is signaling sent from the network control system NCS to each controlled network element.

When the network element applies for the resource, the network element carries a communication target network element ID, the NCS verifies the application validity of the end station (different groups directly reply to the application failure) according to the target network element ID and the communication group relation, and after the verification is passed, the NCS performs resource allocation and distributes resource information to the corresponding network element.

The embodiment of the broadcast resource management performed by the present system is described with reference to fig. 1 as an example:

the broadcast resource refers to a channel resource from the master station or the gateway station to the direction corresponding to the subordinate end station. After the gateway station divides the resources, the NCS needs to broadcast the channel resources to its subordinate network element (i.e. the end station in communication group 2), and the broadcast content is the transmission resources and communication group ID =2 divided by the gateway station; the end station of the communication group 2 checks the GID after receiving the broadcast through the signaling channel, finds that the GID is equal to the current-level GID of the end station, receives the broadcast signaling and receives the broadcast resource; meanwhile, the end station of the communication group 1 and the gateway station of the communication group 2 will also receive the broadcast signaling, but since the group ID in the signaling is different from the GID of the own level, the broadcast resource will not be received. This achieves physical isolation of communication group 1 and communication group 2 at the traffic plane.

By the method described in the scheme, a large-scale satellite network can be divided into a plurality of physically isolated small networks, a hierarchical network form is formed, a broadcast domain is reduced, and the service processing pressure of each network element is reduced.