CN111800406A - Terminal ad hoc network calling method - Google Patents
Terminal ad hoc network calling method Download PDFInfo
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- CN111800406A CN111800406A CN202010612277.5A CN202010612277A CN111800406A CN 111800406 A CN111800406 A CN 111800406A CN 202010612277 A CN202010612277 A CN 202010612277A CN 111800406 A CN111800406 A CN 111800406A
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- terminal
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- hoc network
- control entity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1045—Proxies, e.g. for session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1046—Call controllers; Call servers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
Abstract
A terminal ad hoc network calling method comprises the following steps: establishing an ad hoc network terminal position information acquisition model; the self-networking terminal calls actively; the ad hoc network terminal is called; the invention completes the establishment of the terminal ad hoc network call path by using a standard MESSAGE to increase a universal extension head through a boundary session controller or a proxy call session control entity or a service call session control entity, thereby realizing the connection of the ad hoc network call service; the invention expands the application field of IMS equipment, improves the compatibility of the equipment and the perception of the service of the terminal, does not influence the original processing flow of the equipment, and simplifies the signaling interaction flow and improves the processing efficiency of the self-networking call by using a method of using a message expansion head for the terminal by a boundary session controller or a proxy call session control entity or a service call session control entity.
Description
Technical Field
The invention belongs to the technical field of ad hoc networks, and particularly relates to a terminal ad hoc network calling method.
Background
Due to the requirement of special services in military industry, public security, energy and some special large and medium-sized enterprises in China, the function of supporting the terminal ad hoc network call is required, namely: the network equipment where the terminal is located does not exist (for example, the equipment is destroyed by explosion, the equipment fails to be served and the like), other equipment can continue to provide service for the terminal, the application of the actual service of the terminal is not influenced, and the purpose of service driving is achieved; thus placing demands on the network equipment.
A terminal under an existing IMS (IP Multimedia Subsystem) network architecture is divided by a domain name, the terminal can only register in a device in a home domain, and can make a Call after successful registration, and the terminal cannot register in devices in other domains, and a cross-domain Call of the terminal requires that an SCSCF (Serving-Call Session control, service Call Session control entity) in the local domain is routed to an ICSCF (inquiring Call Session control entity) in a called domain, then routed to an SCSCF to which the called terminal belongs, and finally routed to the called terminal; if the home domain equipment serving the terminal is damaged, the terminal cannot perform normal service, and other equipment cannot provide service for the terminal, so that the terminal cannot perform service, cannot meet the situation of mobile application of the terminal and the equipment, and cannot provide the function of ad hoc network calling.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a terminal ad hoc network calling method which has the advantages of reasonable design and high working efficiency, expands the application field of IMS equipment, improves the compatibility of the equipment and the perception of the service used by the terminal and does not influence the original processing flow of the equipment.
The technical scheme adopted for solving the technical problems is that the terminal ad hoc network calling method comprises the following steps:
s1, establishing a self-networking terminal position information acquisition model
The method comprises the steps that after acquiring terminal position information, a home subscriber server analyzes domain name information, judges whether the terminal is an ad hoc network terminal or not, stores the domain name information if the terminal is the ad hoc network terminal, inquires a domain name to acquire a PDN gateway address for providing service for the ad hoc network terminal, and does not process if the terminal is not the ad hoc network terminal;
when a border session controller or a proxy call session control entity receives a call message of which a called terminal is an ad hoc network terminal, acquiring a PDN gateway address of the ad hoc network terminal, routing the call message to the PDN gateway of the ad hoc network terminal, and then forwarding the call message to the ad hoc network terminal;
s2, self-networking terminal active calling
a. The calling terminal initiates an ad hoc network call through the IP multimedia subsystem equipment which is not in the local domain;
b. the PDN gateway of the calling terminal forwards a calling message to a border session controller or a proxy calling session control entity, the border session controller or the proxy calling session control entity judges that the calling terminal is an extraterritorial ad hoc network terminal, and initiates a notification of terminal online to a service calling session control entity by using a message carrying ad hoc network calling online extension head to make a path for the calling terminal to get through ad hoc network calling;
c. after receiving the message carrying the on-line extension head of the ad hoc network call, the service call session control entity returns a response message to the border session controller or the proxy call session control entity, and the ad hoc network call path is successfully established;
d. the boundary session controller or the proxy call session control entity sends a call message to a service call session control entity, the service call session control entity sends the call message to a called terminal, and the call connection is successful;
e. after the communication is finished, the calling terminal sends a release message to hang up the call, and after the boundary session controller or the proxy call session control entity receives the release message returned by the service call session control entity, the message is used for carrying a notice of the off-line of the self-networking call down-line extension head initiating terminal, and the path of the self-networking call is released;
s3, calling the ad hoc network terminal
a. A service call session control entity receives a call message of a called terminal which is a non-local-domain terminal;
b. the service call session control entity judges that the called terminal is an ad hoc network terminal, and uses a message carrying an on-line extension head of the ad hoc network call to initiate the notification of the on-line of the terminal to a boundary session controller or a proxy call session control entity so as to open an access of the ad hoc network call for the called terminal;
c. after receiving the message carrying the on-line extension head of the ad hoc network call, the border session controller or the proxy call session control entity returns a response message to the service call session control entity, and the ad hoc network call path is successfully established;
d. the service call session control entity inquires the called terminal position information, acquires the PDN gateway address serving the called terminal, adds the path head information of the PDN gateway in the call message, and sends the path head information to the border session controller or the proxy call session control entity;
e. after receiving the call message, the border session controller or the proxy call session control entity forwards the call message to a PDN gateway serving the called terminal, and the PDN gateway sends the call message to the called terminal, and the call connection is successful;
f. after the communication is finished, the called terminal sends a release message to hang up the call, and after the service call session control entity receives the returned release message, the service call session control entity uses the message to carry the notice of the off-line of the self-networking call down-line extension head to initiate the off-line of the terminal, and releases the path of the self-networking call.
As a preferred technical solution, the message carrying the ad hoc network call drop extension header or the ad hoc network call on-line extension header is an SIP message.
As a preferred technical solution, the border session controller or the proxy call session control entity or the service call session control entity allocates a certain fixed channel for the ad hoc network call service as an ad hoc network call service channel, and when the channel is fully occupied, the service established by the ad hoc network call channel is no longer provided for the terminal.
The invention has the following beneficial effects:
the invention simplifies signaling interaction flow, improves processing efficiency of self-networking call, expands application field of IMS equipment, improves compatibility of the equipment and perception of terminal use service, and does not influence original processing flow of the equipment.
Drawings
Fig. 1 is a diagram of an ad hoc network terminal location information acquisition model.
Figure 2 is a flow diagram of preferred embodiment SIP information for an ad hoc network terminal to actively call.
Fig. 3 is a preferred embodiment SIP information flow diagram of an ad hoc network terminal being called.
Detailed Description
The present invention is explained in detail below using an implementation based on the SIP protocol as an embodiment. The SIP Protocol (session initiation Protocol) is used as a call control Protocol in an IMS network due to its flexibility and simplicity, and has good scalability.
The terminal ad hoc network calling method of the embodiment comprises the following steps:
s1, establishing a self-networking terminal position information acquisition model
The method comprises the steps that after acquiring terminal position information, a home subscriber server analyzes domain name information, judges whether the terminal is an ad hoc network terminal or not, stores the domain name information if the terminal is the ad hoc network terminal, inquires a domain name to acquire a PDN gateway address for providing service for the ad hoc network terminal, and does not process if the terminal is not the ad hoc network terminal;
when a border session controller or a proxy call session control entity receives a call message of which a called terminal is an ad hoc network terminal, acquiring a PDN gateway address of the ad hoc network terminal, routing the call message to the PDN gateway of the ad hoc network terminal, and then forwarding the call message to the ad hoc network terminal, as shown in figure 1;
s2, self-networking terminal active calling
a. The calling terminal initiates an ad hoc network call through the IP multimedia subsystem equipment which is not in the local domain;
b. a PDN gateway of a calling terminal forwards a call MESSAGE to a border session controller or a proxy call session control entity, the border session controller or the proxy call session control entity judges that the calling terminal is an extradomain ad-hoc network terminal, a MESSAGE MESSAGE using an SIP protocol carries an on-line extension header P-Special-Msg-FromCallnfo of the ad-hoc network call, the action is an online, a notification of the on-line of the terminal is initiated to the service call session control entity, and a path of the ad-hoc network call is opened for the calling terminal;
this embodiment uses the MESSAGE to carry the extension header of the call of the ad hoc network
"P-Special-Msg-FromCallnfo action ═ online", as described in detail below:
MESSAGE sip:6666@172.16.0.1SIP/2.0
From:
<sip:6666@172.16.0.1>；tag＝711ee0-a902a8c0-cdcd-50029-9-2ce38ef0-9
To:<sip:6666@172.16.0.1>
Call-ID:2aaabd024678-10010ac-13dc-50029-26462-316bab31-26462
CSeq:2064022947MESSAGE
Via:SIP/2.0/UDP 172.16.0.1:5084；branch＝z9hG4bK-26462-9581f51-52ca112f
P-Special-Msg-FromCallInfo:action＝online
Max-Forwards:69
Supported:timer
Route:<sip:cscf@172.16.0.1:5082；lr>
Content-Type:text/plain
Content-Length:0
c. after receiving the MESSAGE carrying the on-line extension header of the ad hoc network call, the service call session control entity returns 200 MESSAGEs to the border session controller or the proxy call session control entity, and the ad hoc network call path is successfully established;
d. the boundary session controller or the proxy call session control entity sends a call message to a service call session control entity, the service call session control entity sends the call message to a called terminal, and the call connection is successful;
e. after the call is completed, the calling terminal sends a Bye hang-up call, the border session controller or the proxy call session control entity receives 200Bye returned by the service call session control entity, uses the MESSAGE to carry a notification of an ad hoc network call down line extension header 'P-Special-Msg-fromcall info' that an action is off line of the initiating terminal, and releases the path of the ad hoc network call, as shown in fig. 2;
in this embodiment, the MESSAGE is used to carry the extension header of the ad hoc network call drop
"P-Special-Msg-FromCallnfo action ═ offline" is described specifically as follows:
MESSAGE sip:6666@172.16.0.1SIP/2.0
From:
<sip:6666@172.16.0.1>；tag＝711ee0-a902a8c0-cdcd-50029-9-2ce38ef0-9
To:<sip:6666@172.16.0.1>
Call-ID:2aaabd024678-10010ac-13dc-50029-26462-316bab31-26462
CSeq:2064022947MESSAGE
Via:SIP/2.0/UDP 172.16.0.1:5084；branch＝z9hG4bK-26462-9581f51-52ca112f
P-Special-Msg-FromCallInfo:action＝offline
Max-Forwards:69
Supported:timer
Route:<sip:cscf@172.16.0.1:5082；lr>
Content-Type:text/plain
Content-Length:0
s3, calling the ad hoc network terminal
a. A service call session control entity receives a call message of a called terminal which is a non-local-domain terminal;
b. the service call session control entity judges that the called terminal is an ad hoc network terminal, uses the MESSAGE MESSAGE of the SIP protocol to carry an on-line extension head P-Special-Msg-FromCallnfo, wherein action is online, initiates a notification of on-line of the terminal to a boundary session controller or an agent call session control entity, and opens a path for the called terminal to get through the ad hoc network call;
c. after receiving the MESSAGE carrying the on-line extension head of the ad hoc network call, the boundary session controller or the proxy call session control entity returns 200 MESSAGEs to the service call session control entity, and the ad hoc network call path is successfully established;
d. the service call session control entity inquires the called terminal position information, acquires the PDN gateway address serving the called terminal, adds the path head information of the PDN gateway in the call message, and sends the path head information to the border session controller or the proxy call session control entity;
e. after receiving the call message, the border session controller or the proxy call session control entity forwards the call message to a PDN gateway serving the called terminal, and the PDN gateway sends the call message to the called terminal, and the call connection is successful;
f. after the call is completed, the called terminal sends a Bye MESSAGE to hang up the call, and after the service call session control entity receives the returned 200Bye, the MESSAGE is used to carry a notification of the off-line of the ad hoc network call down-line extension header "P-Special-Msg-fromcall info: action ═ off-line" initiating terminal, and the path of the ad hoc network call is released, as shown in fig. 3.
The invention completes the establishment of the terminal ad hoc network call path by using a standard MESSAGE to increase a universal extension head through a boundary session controller or a proxy call session control entity or a service call session control entity, thereby realizing the connection of the ad hoc network call service; therefore, the problem that the border session controller or the proxy call session control entity or the service call session control entity can initiate the MESSAGE to allocate the ad hoc network call channel as long as the ad hoc network call exists, thus the security risk of network attack is left, if the situation is serious, the problem that the resource-exhausted equipment can not provide service is caused, in order to solve the problem, a border session controller or a proxy call session control entity or a service call session control entity allocates a certain fixed channel for the ad hoc network call service to be used as an ad hoc network call service channel, when the channel is fully occupied, the service established by the self-networking calling channel is not provided for the terminal any more, so that the requirement of the self-networking calling service of the terminal can be met to the maximum extent while the normal service is provided for the terminal by the equipment, and the compatibility and the reliability of the equipment are improved.
Claims (3)
1. A terminal ad hoc network calling method is characterized by comprising the following steps:
s1, establishing a self-networking terminal position information acquisition model
The method comprises the steps that after acquiring terminal position information, a home subscriber server analyzes domain name information, judges whether the terminal is an ad hoc network terminal or not, stores the domain name information if the terminal is the ad hoc network terminal, inquires a domain name to acquire a PDN gateway address for providing service for the ad hoc network terminal, and does not process if the terminal is not the ad hoc network terminal;
when a border session controller or a proxy call session control entity receives a call message of which a called terminal is an ad hoc network terminal, acquiring a PDN gateway address of the ad hoc network terminal, routing the call message to the PDN gateway of the ad hoc network terminal, and then forwarding the call message to the ad hoc network terminal;
s2, self-networking terminal active calling
a. The calling terminal initiates an ad hoc network call through the IP multimedia subsystem equipment which is not in the local domain;
b. the PDN gateway of the calling terminal forwards a calling message to a border session controller or a proxy calling session control entity, the border session controller or the proxy calling session control entity judges that the calling terminal is an extraterritorial ad hoc network terminal, and initiates a notification of terminal online to a service calling session control entity by using a message carrying ad hoc network calling online extension head to make a path for the calling terminal to get through ad hoc network calling;
c. after receiving the message carrying the on-line extension head of the ad hoc network call, the service call session control entity returns a response message to the border session controller or the proxy call session control entity, and the ad hoc network call path is successfully established;
d. the boundary session controller or the proxy call session control entity sends a call message to a service call session control entity, the service call session control entity sends the call message to a called terminal, and the call connection is successful;
e. after the communication is finished, the calling terminal sends a release message to hang up the call, and after the boundary session controller or the proxy call session control entity receives the release message returned by the service call session control entity, the message is used for carrying a notice of the off-line of the self-networking call down-line extension head initiating terminal, and the path of the self-networking call is released;
s3, calling the ad hoc network terminal
a. A service call session control entity receives a call message of a called terminal which is a non-local-domain terminal;
b. the service call session control entity judges that the called terminal is an ad hoc network terminal, and uses a message carrying an on-line extension head of the ad hoc network call to initiate the notification of the on-line of the terminal to a boundary session controller or a proxy call session control entity so as to open an access of the ad hoc network call for the called terminal;
c. after receiving the message carrying the on-line extension head of the ad hoc network call, the border session controller or the proxy call session control entity returns a response message to the service call session control entity, and the ad hoc network call path is successfully established;
d. the service call session control entity inquires the called terminal position information, acquires the PDN gateway address serving the called terminal, adds the path head information of the PDN gateway in the call message, and sends the path head information to the border session controller or the proxy call session control entity;
e. after receiving the call message, the border session controller or the proxy call session control entity forwards the call message to a PDN gateway serving the called terminal, and the PDN gateway sends the call message to the called terminal, and the call connection is successful;
f. after the communication is finished, the called terminal sends a release message to hang up the call, and after the service call session control entity receives the returned release message, the service call session control entity uses the message to carry the notice of the off-line of the self-networking call down-line extension head to initiate the off-line of the terminal, and releases the path of the self-networking call.
2. The terminal ad hoc network calling method according to claim 1, wherein the message carrying the ad hoc network calling down line extension header or the ad hoc network calling up line extension header is an SIP message.
3. The terminal ad hoc network calling method according to claim 1, characterized in that: the border session controller or the proxy call session control entity or the service call session control entity allocates a certain fixed channel for the ad hoc network call service as an ad hoc network call service channel, and the service established by the ad hoc network call channel is no longer provided for the terminal when the channel is completely occupied.
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