CN101989993A - Method, device and system for determining peer-to-peer (P2P) node - Google Patents
Method, device and system for determining peer-to-peer (P2P) node Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for determining a peer-to-peer (P2P) node. The method comprises the following steps of: acquiring the address of a first proxy-call session control function (P-CSCF) of an IP multimedia subsystem (IMS) to which the P2P node of the current request content belongs; determining a third P-CSCF which has the same geographic position as the first P-CSCF or is close to the first P-CSCF in a second P-CSCF to which the P2P node belongs according to the address of the first P-CSCF and the address of the second P-CSCF; and determining one or more P2P nodes in the P2P nodes which belong to the third P-CSCF and have the request content as the P2P node. By using the method, the device and the system provided by the invention, the occupancy of bandwidth resource of a backbone network by P2P flow is reduced, the quality of service of the network is improved, and the overhead is smaller and the cost is lower than those of the prior art.
Description
Technical field
The present invention relates to the communications field, relate in particular to that a kind of (IP multimediasubsystem IMS) realizes that (Peer-to-Peer, the peer node when carrying out content delivery in P2P) is determined method and apparatus and system to peer-to-peer network by IP Multimedia System.
Background technology
The IMS technology that 3GPP proposes perfect service logic on the basis of soft switch is separated with control and calls out control and mechanism of separate is controlled in carrying, has optimized signaling plane.In addition, the IMS system has many-sided advantages such as end-to-end all-IPization, access way independence, horizontal business development mechanism, obtained the extensive approval of other standardization bodies rapidly,, expand to the fixing unified core net that merges that moves from the system of initial 3GPP at mobile subscriber's definition.
The core concept of P2P is by directly realizing sharing of system resource and information alternately between the participation node (peer) of system.The P2P system emphasizes the equity between the node, information resources are disperseed to be stored in each and are participated in node, each participates in node and has two kinds of identity of server and client side concurrently, can ask service and service is provided, content delivery is directly carried out between node, has avoided the network and the server bottleneck problem that occur easily in client/server (C/S) framework.Therefore, compare the C/S framework, the P2P system can make full use of the idling-resource of the network terminal, greatly reduce the construction and the operation cost of system, simultaneously, the many more Service Sources of node are also many more, and therefore system is with good expansibility and adaptivity highly, can satisfy the business demand under the various outburst surroundings.
When but operator provides the P2P service, because network side lacks corresponding management and control to the connection that respectively participates in the network between the node, can not control effectively that respectively to participate in data between nodes mutual, as shown in Figure 1, make a large amount of P2P flows pass through backbone network, take the bandwidth resources of backbone network, the service quality of network is declined to a great extent.
At present, existing solution to this problem is to carry out flow optimization, be connection and the data interaction between the Control Node, make the adjacent node of physical location connect as far as possible, carry out data interaction, can avoid a large amount of P2P flows to pass through backbone network, Figure 2 shows that the node connection diagram of carrying out behind the flow optimization.
But, existing flow optimization method, IP address that can only reference node.Because IP addresses of nodes is not a continuous dispensing, the physical location of also getting along well is relevant, promptly much not at the node of same physical location, but has adjacent IP address, and at the node of same physical location, the IP address is but at the different network segments.Therefore, the Tracker server in the P2P system need upgrade IP addresses of nodes at any time, and with IP address physical address corresponding.This is to be difficult to realize in the existing network operation of reality, also will pay very big cost even if realize.
Summary of the invention
The embodiment of the invention provides a kind of P2P peer node to determine method and apparatus and system, in order to reduce the P2P flow to the taking of the bandwidth resources of backbone network, improve the service quality of network, and compared with prior art expense is little, cost is low.
The embodiment of the invention provides a kind of P2P peer node to determine method, comprising:
Obtain the address of the first Proxy Call Session Control Function network element P-CSCF of IP Multimedia System IMS of the P2P node ownership of current request content;
In the 2nd P-CSCF of P2P node ownership,, determine the 3rd identical with a described P-CSCF geographical position or contiguous P-CSCF according to the address of a described P-CSCF and the address of described the 2nd P-CSCF;
With belonging to described the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node of described current request content;
Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF.
The embodiment of the invention also provides a kind of application server, comprising:
Acquiring unit is used to obtain the address of the first Proxy Call Session Control Function network element P-CSCF of IP Multimedia System IMS of the P2P node ownership of current request content; Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF;
First determining unit is used for the 2nd P-CSCF in P2P node ownership, according to the address of a described P-CSCF and the address of described the 2nd P-CSCF, determines the 3rd identical with a described P-CSCF geographical position or contiguous P-CSCF;
Second determining unit is used for being defined as the peer node of the P2P node of described current request content with belonging to described the 3rd P-CSCF and having one or more P2P nodes of the P2P node of institute's request content.
The embodiment of the invention provides a kind of P2P system again, comprising: P2P node, Proxy Call Session Control Function network element P-CSCF and application server;
Described P2P node is used to send content request message; And the peer node of determining that receives described application server feedback; And select one or more nodes in the described peer node to connect and carry out content delivery;
Described P-CSCF is used to receive described content request message, and adds the address of self in described content request message, and sends to described application server;
Described application server is used to obtain the address of a P-CSCF of IP Multimedia System IMS of the P2P node ownership of current request content; In the 2nd P-CSCF of P2P node ownership,, determine the 3rd identical with a described P-CSCF geographical position or contiguous P-CSCF according to the address of a described P-CSCF and the address of described the 2nd P-CSCF; With belonging to described the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node of described current request content; Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF; And the described peer node that will determine feeds back to the P2P node of described current request content.
In the embodiment of the invention, determine that with being used in the P2P system application server of peer node is arranged at the IMS network, address according to the Proxy Call Session Control Function network element P-CSCF of IMS, in each P2P node of the P2P node institute request content that has the current request content, determine with the contiguous node in the P2P node geographical position of current request content be the peer node of the P2P node of current request content.That is: obtain the address of a P-CSCF of IMS of the P2P node ownership of current request content; Because, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF, so, can be in the 2nd P-CSCF of P2P node ownership, according to the address of a P-CSCF and the address of the 2nd P-CSCF, determine the 3rd identical with a P-CSCF geographical position or contiguous P-CSCF; With belonging to the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node of current request content.Therefore, the geographical position of the P2P node of peer node of determining and current request content is contiguous, and then make the P2P node of current request content and the peer node of determining connect when carrying out content delivery, can avoid a large amount of P2P flows to pass through backbone network, reduce P2P flow taking to the bandwidth resources of backbone network, improve the service quality of network, and compared with prior art expense is little, cost is low.
Description of drawings
Fig. 1 is not for carrying out the node connection diagram of flow optimization in the P2P system;
Fig. 2 is for carrying out the node connection diagram behind the flow optimization in the P2P system;
Fig. 3 determines one of flow chart of method for a kind of P2P peer node that the embodiment of the invention provides;
A kind of P2P peer node that Fig. 4 provides for the embodiment of the invention is determined the flow chart of node registration in the method;
A kind of P2P peer node that Fig. 5 provides for the embodiment of the invention is determined the flow chart of content update in the method;
A kind of P2P peer node that Fig. 6 provides for the embodiment of the invention determine method flow chart two;
The structural representation of a kind of application server that Fig. 7 provides for the embodiment of the invention;
The structural representation of first determining unit in a kind of application server that Fig. 8 provides for the embodiment of the invention;
The structural representation of a kind of P2P system that Fig. 9 provides for the embodiment of the invention.
Embodiment
In P2P used, the P2P node at first sent login request message to the Tracker server, registers, and reports the content that self had simultaneously; When P2P node request content, send content request message to the Tracker server, carry the information of institute's request content, the Tracker server is according to the information of this P2P node institute request content, determine to have the peer node of the P2P node of institute's request content for this P2P node, and the peer node of determining is fed back to this P2P node, this P2P node selects the node in the peer node to connect, and carry out content delivery, content delivery is no longer passed through the Tracker server.
The embodiment of the invention provides a kind of P2P peer node to determine method, determines that with being used in the P2P system application server (Tracker server) of peer node is arranged at the IMS network, and method flow comprises as shown in Figure 3:
Step S301, the address of a P-CSCF (P-CSCF represents the P-CSCF of the P2P node ownership of current request content) of IMS that obtains the P2P node ownership of current request content; The address of P-CSCF characterizes the corresponding geographical position of P-CSCF.
This step is specifically as follows: the content request message that a P-CSCF of the P2P node ownership of reception current request content sends; Message behind this content request message to be a P-CSCF add in the content request message that the P2P node of the current request content that receives sends self address is carried the node identification of P2P node of current request content and the address of a P-CSCF;
From content request message, obtain the address of a P-CSCF; Perhaps
According to the node identification of the P2P node of current request content, the corresponding relation of the node identification of inquiry storage and the P-CSCF of ownership, the address that obtains a P-CSCF; Wherein, the address of a P-CSCF of storage is to obtain and store after the message that receives this P2P node transmission by a P-CSCF.
Step S302, in the 2nd P-CSCF of P2P node ownership, according to the address of a P-CSCF and the address of the 2nd P-CSCF, determine the 3rd identical with a P-CSCF geographical position or contiguous P-CSCF (the 3rd P-CSCF represent determine identical with a P-CSCF geographical position or contiguous P-CSCF).
Wherein, the 2nd P-CSCF can be all P-CSCF, perhaps belongs to have the P2P node that has institute's request content in the P2P node of the 2nd P-CSCF.
Step S303, will belong to the 3rd P-CSCF and have one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node of current request content.
The embodiment of the invention is arranged at the Tracker server in the IMS network, because the node in the IMS network is sent to the P-CSCF that the message of IMS core network element all needs this node ownership of process, therefore, the various message that the Tracker server of P2P node in the embodiment of the invention in being arranged at the IMS network sends also need the P-CSCF through this P2P node ownership, below by concrete transmission of messages flow process the embodiment of the invention are described in detail.
Fig. 4 is the transmission of messages flow chart when the P2P node is registered in the embodiment of the invention, comprising:
Step S401, P2P node send login request message to the P-CSCF of its ownership, the node identification that carries this P2P node in this login request message with and had a content identification of content.
After step S402, P-CSCF receive the login request message of P2P node transmission, know that this login request message should be transmitted to the Tracker server, the address of self is added in this login request message, for example, the address of self is added in the path field of this login request message.
Step S403, P-CSCF send to the Tracker server with the login request message of having added self address.
After step S404, Tracker server receive login request message, obtain the node identification of the P2P node that carries in the message, the content identification of this P2P content that node has and the address of the P-CSCF that this P2P node belongs to, and to node identification that should the P2P node, the address of the P-CSCF of memory contents sign and this P2P node ownership.
In P2P used, the P2P node also can send some message to the Tracker server after the success of Tracker server registration, for example, when the content changing that it had, sent content update message.Be that example is described to send content update message below, as shown in Figure 5, comprise:
Step S501, P2P node send content update message to the P-CSCF of its ownership, the node identification that carries this P2P node in this content update message with and the current content identification that is had content.
After step S502, P-CSCF receive the content update message of P2P node transmission, know that this content update message should be transmitted to the Tracker server, the address of self is added in this content update message, for example, the address of self is added in the path field of this content update message.
Step S503, P-CSCF send to the Tracker server with the content update message of having added self address.
After step S504, Tracker server receive content update message, obtain the current content identification of content and the address of the P-CSCF that this P2P node belongs to of having of node identification, this P2P node of the P2P node that carries in the message, and, use the content identification of this P2P content that node has of the current content identification updated stored that has a content of this P2P node to node identification that should the P2P node.
The address of the P-CSCF that carries in the content update message that this receives, address for the P-CSCF of the current ownership of this P2P node, the address of the P-CSCF of this P2P node ownership of this address and storage is compared, if different, as then to use this P2P node ownership of this this address updated stored that the receives address of P-CSCF.
Preferable, can also be after the P2P node roams to other places in the embodiment of the invention, when not belonging to former P-CSCF, the P-CSCF that initiatively passes through its current ownership sends location update message to the Tracker server, after the Tracker server receives location update message, use the address of P-CSCF of this P2P node ownership of address updated stored of the P-CSCF of the current ownership of this P2P node.
In the embodiment of the invention, the message that the P2P node sends to the Tracker server all needs the P-CSCF through its ownership, therefore, after the Tracker server receives message, all can obtain the address of the P-CSCF of the current ownership of P2P node, and compare with the address of the P-CSCF of this P2P node ownership of original storage, if different, then upgrade.
By above-mentioned Fig. 4 and registration shown in Figure 5 with more behind the new technological process, the node identification of corresponding each the P2P node of Tracker server, stored the content identification of each P2P content that node has, with and the address of P-CSCF of ownership, and after this P2P node roamed to other places, the address of the P-CSCF that this P2P node of storage can also be belonged to was updated to the address of the P-CSCF of the current ownership of this P2P node.At this moment, after the Tracker server receives the content request message of P2P node transmission, then can determine the peer node of this P2P node according to the above-mentioned information of storage, idiographic flow comprises as shown in Figure 6;
Step S601, P2P node send content request message to the P-CSCF of its ownership, the content identification of carrying this P2P node in this content request message with and the content identification of institute's request content.
After step S602, P-CSCF receive the content request message of P2P node transmission, know that this content request message should be transmitted to the Tracker server, the address of self is added in this content request message, for example, the address of self is added in the path field of this content request message.
Step S603, P-CSCF send to the Tracker server with the content request message of having added self address.
After step S604, Tracker server receive content request message, obtain the node identification of the P2P node that carries in the message, the content identification of this P2P node institute request content and the address of the P-CSCF that this P2P node belongs to.Also can be according to the node identification of this P2P node, the node identification of inquiry storage and the P-CSCF corresponding relation of ownership, the address that obtains a P-CSCF.
Because, the address of P-CSCF in the IMS network can characterize the geographical position of P-CSCF, therefore, in the embodiment of the invention, when determining the peer node of this P2P node, except that make the peer node determine have institute's request content according to content identification, also, make the peer node of determining be close to this P2P node geographical position according to the address of a P-CSCF of this P2P node ownership.
Be specifically as follows: at first determine each the P2P node that has institute's request content, can determine according to the content identification of corresponding node sign storage, among the 2nd P-CSCF that each P2P node of request content belongs to having, according to the address of a P-CSCF and the address of the 2nd P-CSCF, determine the 3rd identical with a P-CSCF geographical position or contiguous P-CSCF; With belonging to the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node of current request content.
Specifically can also for: in the 2nd P-CSCF of each P2P node ownership,, determine the 3rd identical with a P-CSCF geographical position or contiguous P-CSCF according to the address of a P-CSCF and the address of the 2nd P-CSCF; With the one or more P2P nodes that belong in the P2P node that has institute's request content of the 3rd P-CSCF, be defined as the peer node of the P2P node of current request content.
In the above-mentioned dual mode,, determine the 3rd identical with a P-CSCF geographical position or contiguous P-CSCF, specifically can comprise according to the address of a P-CSCF and the address of the 2nd P-CSCF:
The address of determining the 2nd P-CSCF is first kind address; Can determine according to the address of the P-CSCF that is belonged to of corresponding node sign storage;
And have each corresponding P-CSCF of the first subclass address of identical top-level domain in the first kind address with the address of a P-CSCF, be defined as the 3rd P-CSCF.Specifically can be in the following way:
First kind of mode is: with have each corresponding P-CSCF of the first subclass address of same settings top-level domain in the first kind address with the address of a P-CSCF, be defined as the 3rd P-CSCF.
The address of P-CSCF in the IMS network is SIP URI address, be domain name addresses, and the rank of domain name is high more, the zone in the geographical position that is characterized is big more, for example, the address of the one P-CSCF is P-CSCF@sz.gd.chinamobile.com (expression China Mobile Shenzhen City, Guangdong Province), wherein " P-CSCF " is user name, " sz.gd.chinamobile.com " is domain name, and domain name is divided several ranks, wherein " sz.gd.chinamobile.com " is the domain name of minimum one-level, and its upper level domain name is " gd.chinamobile.com ", and the upper level domain name is " chinamobile.com " again.If it is identical to participate in two addresses relatively, the P-CSCF that represents these two address correspondences is same P-CSCF; Have identical top-level domain if participate in two addresses relatively, represent the geographical position vicinity of the P-CSCF of these two address correspondences.
In above-mentioned first kind of mode, address according to a P-CSCF preestablishes top-level domain, for example, this setting level domain name is the upper level " gd.chinamobile.com " of minimum one-level, then in each first kind address, the address of determining to have this setting level domain name " gd.chinamobile.com " is the first subclass address, determines that the P-CSCF of the first subclass address correspondence is the 3rd P-CSCF.For example, address gz.gd.chinamobile.com (expression China Mobile GuangZhou, Guangdong Province city) and zh.gd.chinamobile.com (expression province Zhuhai City, China Mobile Guangzhou) all have this setting level domain name, then these two addresses are the first subclass address, and then the P-CSCF of these two address correspondences is the 3rd P-CSCF.
Certainly should set domain name and also can be minimum one-level, then essence is: with a P-CSCF of this P2P node ownership as the 3rd P-CSCF.
The second way is: by the rank order from low to high of the domain names at different levels of the address correspondence of a P-CSCF, in first kind address, exist with the address of a P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfy to be set quantitative requirement, and the P-CSCF of the first subclass address correspondence is defined as the 3rd P-CSCF.
Promptly the minimum top-level domain from the address of a P-CSCF begins to determine, this moment, minimum top-level domain was for working as the prime domain name, in first kind address, if there is the address of a P-CSCF, and belong in the P2P node of a P-CSCF, the quantity that has the P2P node of institute's request content satisfies the setting quantitative requirement, and (setting quantitative requirement can be for setting quantity greater than one, or in some scopes), then a P-CSCF is defined as the 3rd P-CSCF, determine to finish, otherwise, also determine according to the upper level domain name of minimum one-level, this moment, the upper level domain name of minimum one-level was when the prime domain name, if in first kind address, there is the first subclass address that has when the prime domain name, and belong in the P2P node of P-CSCF of the first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfies sets quantitative requirement, then the P-CSCF with the first subclass address correspondence is defined as the 3rd P-CSCF, determine to finish, otherwise, also according to determining that when the upper level domain name of previous stage the rest may be inferred, till determining the 3rd P-CSCF or determining to finish according to domain name at the highest level.
When the 2nd P-CSCF is all P-CSCF, can also adopt the third mode: by the rank order from low to high of the domain names at different levels of the address correspondence of a P-CSCF, in first kind address, exist with the address of a P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the first subclass address correspondence, there is the P2P node have institute's request content, the P-CSCF of the first subclass address correspondence is defined as the 3rd P-CSCF.
Promptly the minimum top-level domain from the address of a P-CSCF begins to determine, this moment, minimum top-level domain was for working as the prime domain name, in first kind address, if there is the address of a P-CSCF, and belong in the P2P node of a P-CSCF, there is the P2P node that has institute's request content, then a P-CSCF is defined as the 3rd P-CSCF, determine to finish, otherwise, determine according to the upper level domain name of minimum one-level that also this moment, the upper level domain name of minimum one-level was when the prime domain name, if in first kind address, there is the first subclass address have when the prime domain name, and belongs in the P2P node of P-CSCF of the first subclass address correspondence, have the P2P node that has institute's request content, then the P-CSCF with the first subclass address correspondence is defined as the 3rd P-CSCF, determine to finish, otherwise, also determine according to upper level domain name when previous stage, the rest may be inferred, till determining the 3rd P-CSCF or determining to finish according to domain name at the highest level.
After determining the 3rd P-CSCF,, be defined as the peer node of the P2P node of current request content with the one or more P2P nodes that belong in the P2P node that has institute's request content of the 3rd P-CSCF.
For ease of realizing, preferable can for: the P2P node that has institute's request content that will belong to the 3rd P-CSCF is defined as the peer node of the P2P node of current request content.
In the embodiment of the invention, after adopting above-mentioned method shown in Figure 6 to determine the peer node of P2P node of request content, the peer node of determining can also be fed back to this P2P node, this P2P node is selected the one or more nodes in the peer node to connect and is carried out content delivery, and content delivery is no longer passed through the Tracker server.
Because the transmission of messages in the IMS network adopts Session Initiation Protocol, therefore, the above-mentioned transmission of messages in the embodiment of the invention also can adopt Session Initiation Protocol to realize.
Based on same inventive concept, determine method according to the P2P peer node that the above embodiment of the present invention provides, correspondingly, another embodiment of the present invention also provides a kind of application server, and its structural representation comprises as shown in Figure 7:
Acquiring unit 701 is used to obtain the address of a P-CSCF of IMS of the P2P node ownership of current request content; Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF;
First determining unit 702 is used for the 2nd P-CSCF in P2P node ownership, according to the address of a P-CSCF and the address of the 2nd P-CSCF, determines the 3rd identical with a P-CSCF geographical position or contiguous P-CSCF;
Second determining unit 703 is used for and will belongs to one or more P2P nodes of the P2P node that has institute's request content of the 3rd P-CSCF, is defined as the peer node of the P2P node of current request content.
Preferable, above-mentioned acquiring unit 701 specifically is used to receive the content request message that a P-CSCF of the P2P node ownership of current request content sends; Carry the node identification of P2P node of current request content and the address of a P-CSCF in this content request message; And the address that from this content request message, obtains a P-CSCF; Perhaps according to the node identification of this node identification inquiry storage and the P-CSCF corresponding relation of ownership, the address that obtains a P-CSCF.
Preferable, above-mentioned first determining unit 702 as shown in Figure 8, comprising:
First determines subelement 801, is used for determining that the address of the 2nd P-CSCF is first kind address;
Second determines subelement 802, is used for first kind address and the address of a P-CSCF are had the corresponding P-CSCF in the first subclass address of identical top-level domain, is defined as the 3rd P-CSCF; Wherein, the address of P-CSCF is a domain name addresses.
Preferable, above-mentioned second determines subelement 802, specifically being used for the P2P node that Radix Angelicae Sinensis belongs to the 2nd P-CSCF exists when having the P2P node of institute's request content, with have the corresponding P-CSCF in the first subclass address of same settings level domain name in the first kind address with the address of a P-CSCF, be defined as the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a P-CSCF, in first kind address, exist with the address of a P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfy to be set quantitative requirement, and the P-CSCF of the first subclass address correspondence is defined as the 3rd P-CSCF;
Above-mentioned second determines subelement 802, specifically is used for will having each corresponding P-CSCF of the first subclass address of same settings level domain name in the first kind address with the address of a P-CSCF when the 2nd P-CSCF is all P-CSCF, is defined as the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a P-CSCF, in first kind address, exist with the address of a P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfy to be set quantitative requirement, and the P-CSCF of the first subclass address correspondence is defined as the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a P-CSCF, in first kind address, exist with the address of a P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the first subclass address correspondence, there is the P2P node have institute's request content, the P-CSCF of the first subclass address correspondence is defined as the 3rd P-CSCF;
Wherein, the rank of domain name is high more, and the zone in the geographical position that is characterized is big more.
Preferable, above-mentioned application server also comprises:
Based on same inventive concept, determine method according to the P2P peer node that the above embodiment of the present invention provides, correspondingly, another embodiment of the present invention also provides a kind of P2P system, its structural representation comprises as shown in Figure 9: P2P node 901, P-CSCF 902 and application server 903;
Above-mentioned P2P node 901 is used to send content request message; And the peer node of determining that receives above-mentioned application server 903 feedbacks; And the one or more nodes in the selection peer node connect and carry out content delivery;
Above-mentioned P-CSCF 902 is used to receive this content request message, and adds the address of self in this content request message, and sends to above-mentioned application server 903;
Above-mentioned application server 903 is used to obtain the address of a P-CSCF of IMS of P2P node 901 ownership of current request content; In the 2nd P-CSCF of P2P node ownership,, determine the 3rd identical with a P-CSCF 902 geographical position or contiguous P-CSCF according to the address of a P-CSCF902 and the address of the 2nd P-CSCF; With belonging to the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node 901 of current request content; Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF; And the peer node of determining is fed back to the P2P node of current request content.
In sum, the scheme that the embodiment of the invention provides comprises: the address of a P-CSCF of IMS that obtains the P2P node ownership of current request content; In the 2nd P-CSCF of P2P node ownership,, determine the 3rd identical with a P-CSCF geographical position or contiguous P-CSCF according to the address of a P-CSCF and the address of the 2nd P-CSCF; With belonging to the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node 901 of current request content; Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF.Adopt this programme, reduced the P2P flow, improved the service quality of network, and compared with prior art expense is little, cost is low the taking of the bandwidth resources of backbone network.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. a P2P peer node is determined method, it is characterized in that, comprising:
Obtain the address of the first Proxy Call Session Control Function network element P-CSCF of IP Multimedia System IMS of the P2P node ownership of current request content;
In the 2nd P-CSCF of P2P node ownership,, determine the 3rd identical with a described P-CSCF geographical position or contiguous P-CSCF according to the address of a described P-CSCF and the address of described the 2nd P-CSCF;
With belonging to described the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node of described current request content;
Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF.
2. the method for claim 1 is characterized in that, belongs to have the P2P node that has institute's request content in the P2P node of described the 2nd P-CSCF, perhaps
Described the 2nd P-CSCF is all P-CSCF.
3. the method for claim 1 is characterized in that, the address of the P-CSCF of the IMS that the described P2P node that obtains the current request content belongs to is specially:
The content request message that the one P-CSCF of the P2P node ownership of reception current request content sends; Carry the node identification of P2P node of described current request content and the address of a described P-CSCF in the described content request message;
From described content request message, obtain the address of a described P-CSCF; Perhaps
According to the corresponding relation of the P-CSCF of the node identification of described node identification inquiry storage and ownership, the address that obtains a described P-CSCF.
4. the method for claim 1 is characterized in that, describedly determines the 3rd identical with a described P-CSCF geographical position or contiguous P-CSCF, specifically comprises:
The address of determining described the 2nd P-CSCF is first kind address;
And have the corresponding P-CSCF in the first subclass address of identical top-level domain in the described first kind address with the address of a described P-CSCF, be defined as described the 3rd P-CSCF; Wherein, the address of P-CSCF is a domain name addresses.
5. method as claimed in claim 4, it is characterized in that, Radix Angelicae Sinensis belongs to and exists when having the P2P node of institute's request content in the P2P node of described the 2nd P-CSCF, described will have the corresponding P-CSCF in the first subclass address of identical top-level domain with the address of a described P-CSCF in the described first kind address, be defined as described the 3rd P-CSCF, be specially:
And have each corresponding P-CSCF of the first subclass address of same settings level domain name in the described first kind address with the address of a described P-CSCF, be defined as described the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a described P-CSCF, in described first kind address, exist with the address of a described P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the described first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfy to be set quantitative requirement, and the P-CSCF of the described first subclass address correspondence is defined as described the 3rd P-CSCF;
When described the 2nd P-CSCF is all P-CSCF, describedly be defined as described the 3rd P-CSCF with have the corresponding P-CSCF in the first subclass address of identical top-level domain in the described first kind address with the address of a described P-CSCF, be specially:
And have the corresponding P-CSCF in the first subclass address of same settings level domain name in the described first kind address with the address of a described P-CSCF, be defined as described the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a described P-CSCF, in described first kind address, exist with the address of a described P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the described first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfy to be set quantitative requirement, and the P-CSCF of the described first subclass address correspondence is defined as described the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a described P-CSCF, in described first kind address, exist with the address of a described P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the described first subclass address correspondence, there is the P2P node have institute's request content, the P-CSCF of the described first subclass address correspondence is defined as described the 3rd P-CSCF;
Wherein, the rank of domain name is high more, and the zone in the geographical position that is characterized is big more.
6. as the arbitrary described method of claim 1-5, it is characterized in that, also comprise:
The described peer node of determining is fed back to the P2P node of described current request content;
The P2P node of described current request content is selected the one or more nodes in the described peer node to connect and is carried out content delivery.
7. an application server is characterized in that, comprising:
Acquiring unit is used to obtain the address of the first Proxy Call Session Control Function network element P-CSCF of IP Multimedia System IMS of the P2P node ownership of current request content; Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF;
First determining unit is used for the 2nd P-CSCF in P2P node ownership, according to the address of a described P-CSCF and the address of described the 2nd P-CSCF, determines the 3rd identical with a described P-CSCF geographical position or contiguous P-CSCF;
Second determining unit is used for being defined as the peer node of the P2P node of described current request content with belonging to described the 3rd P-CSCF and having one or more P2P nodes of the P2P node of institute's request content.
8. application server as claimed in claim 7 is characterized in that, described acquiring unit specifically is used to receive the content request message that a P-CSCF of the P2P node ownership of current request content sends; Carry the node identification of P2P node of described current request content and the address of a described P-CSCF in the described content request message; And the address that from described content request message, obtains a described P-CSCF; Perhaps according to the corresponding relation of the P-CSCF of the node identification of described node identification inquiry storage and ownership, the address that obtains a described P-CSCF.
9. application server as claimed in claim 7 is characterized in that, described first determining unit comprises:
First determines subelement, is used for determining that the address of described the 2nd P-CSCF is first kind address;
Second determines subelement, is used for described first kind address and the address of a described P-CSCF are had the corresponding P-CSCF in the first subclass address of identical top-level domain, is defined as described the 3rd P-CSCF; Wherein, the address of P-CSCF is a domain name addresses.
10. application server as claimed in claim 9, it is characterized in that, described second determines subelement, specifically being used for the P2P node that Radix Angelicae Sinensis belongs to described the 2nd P-CSCF exists when having the P2P node of institute's request content, with have the corresponding P-CSCF in the first subclass address of same settings level domain name in the described first kind address with the address of a described P-CSCF, be defined as described the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a described P-CSCF, in described first kind address, exist with the address of a described P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the described first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfy to be set quantitative requirement, and the P-CSCF of the described first subclass address correspondence is defined as described the 3rd P-CSCF;
Described second determines subelement, specifically be used for when described the 2nd P-CSCF is all P-CSCF, with have the corresponding P-CSCF in the first subclass address of same settings level domain name in the described first kind address with the address of a described P-CSCF, be defined as described the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a described P-CSCF, in described first kind address, exist with the address of a described P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the described first subclass address correspondence, the quantity that has the P2P node of institute's request content satisfy to be set quantitative requirement, and the P-CSCF of the described first subclass address correspondence is defined as described the 3rd P-CSCF; Perhaps
Rank order from low to high by the domain names at different levels of the address correspondence of a described P-CSCF, in described first kind address, exist with the address of a described P-CSCF and have the identical first subclass address when the prime domain name, and belong in the P2P node of P-CSCF of the described first subclass address correspondence, there is the P2P node have institute's request content, the P-CSCF of the described first subclass address correspondence is defined as described the 3rd P-CSCF;
Wherein, the rank of domain name is high more, and the zone in the geographical position that is characterized is big more.
11. as the arbitrary described application server of claim 7-10, it is characterized in that, also comprise:
Feedback unit, the described peer node that is used for determining feeds back to the P2P node of described current request content.
12. a P2P system is characterized in that, comprising: P2P node, Proxy Call Session Control Function network element P-CSCF and application server;
Described P2P node is used to send content request message; And the peer node of determining that receives described application server feedback; And select one or more nodes in the described peer node to connect and carry out content delivery;
Described P-CSCF is used to receive described content request message, and adds the address of self in described content request message, and sends to described application server;
Described application server is used to obtain the address of a P-CSCF of IP Multimedia System IMS of the P2P node ownership of current request content; In the 2nd P-CSCF of P2P node ownership,, determine the 3rd identical with a described P-CSCF geographical position or contiguous P-CSCF according to the address of a described P-CSCF and the address of described the 2nd P-CSCF; With belonging to described the 3rd P-CSCF and having one or more P2P nodes in the P2P node of institute's request content, be defined as the peer node of the P2P node of described current request content; Wherein, the address of P-CSCF characterizes the corresponding geographical position of P-CSCF; And the described peer node that will determine feeds back to the P2P node of described current request content.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103023979A (en) * | 2012-11-22 | 2013-04-03 | 华中科技大学 | Inter-domain communication method of distributed IMS (multimedia subsystem) core net framework |
| CN103516664A (en) * | 2012-06-18 | 2014-01-15 | 中国移动通信集团公司 | A P2P business node selection method base on an IMS and an apparatus |
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| CN1801822A (en) * | 2006-01-23 | 2006-07-12 | 北京交通大学 | P2P network SIP realizing method based on host machine mark protocol |
| CN101383785B (en) * | 2008-10-24 | 2011-08-17 | 中国科学院计算技术研究所 | Service stream management method oriented to SIP application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103516664A (en) * | 2012-06-18 | 2014-01-15 | 中国移动通信集团公司 | A P2P business node selection method base on an IMS and an apparatus |
| CN103023979A (en) * | 2012-11-22 | 2013-04-03 | 华中科技大学 | Inter-domain communication method of distributed IMS (multimedia subsystem) core net framework |
| CN103023979B (en) * | 2012-11-22 | 2015-04-15 | 华中科技大学 | Inter-domain communication method of distributed IMS (multimedia subsystem) core net framework |
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