TWI240513B - Method for utilizing deployment information of service domain to perform fast domain handoffs - Google Patents

Abstract

The present invention provides a method for utilizing an agent of service domain and deployment information of a network access point to perform fast domain handoffs. The method is to know the agent and a position of the network access point managed by the agent based on deployment information of the service domain. According to the deployment information, when a mobile node communicates with a network access point managed by one of service agents, the mobile node can obtain a network resource from the neighbor agents. The network resource is then used in advance before performing handoffs between agents. Alternatively, the network resource is then used immediately after performing handoffs. Hence, the present invention can achieve the effect of fast handoff and provide a smooth service.

Description

1240513 V. Fenming Explanation (1) [Technical Field to which the Invention belongs] The present invention relates to a network delivery technology, and in particular, to a method for fast domain delivery using deployment information of a service domain. [Previous Technology] With the maturity of wired and wireless network technologies, more and more IEEE802.1 1b or Bluetooth products have made the popularity of various networks higher. Most of these products can be connected to the Internet through an access point. For example, they use a network access router on the wired side or use a wireless base station on the wireless side. . Because wireless mobile information devices are lightweight and easy to push, they are more convenient than stationary computers, whether in business or home use. However, how to make mobile information equipment to hand over quickly between wireless network base stations has become an important issue. The mobile communication protocol (Mobile IP) provides a wireless network device (Mobile node) or a mobile node (MN) whose application-layer program can continue to connect while moving. However, when a wireless network device is roaming across network domains, delays or even disconnection of the network connection service often occur. This is because the wireless network device on the move is performing a wireless network base station (Access point, (AP) handover (f), in addition to establishing a connection with the new base station, it must also report the change of position with the original connection node (CN) or agent (Agent) (Location update), so that the connection or proxy server can correctly forward the packet to the correct new location; therefore, the new base station is explored on the wireless network device (Probe)

1240513 V. Description of the invention (2) and the connection process, there is bound to be a period of disconnection, and the wireless network equipment has not yet been reported. The original counterpart will still use the old one before reporting the change of the location of the original counterpart (CN). IP_Send packets (Packets), so that some packets are lost. The above exploration and connection procedures often take too long, making the wireless network device unable to achieve fast or seainless handover, which in turn causes the i-layer communication layer or application layer handover (Applicati〇n handoff ) Interruption of the process. For applications such as Voice over Internet Protocol (VoIP) or Video on Demand (VOD), insufficient delivery will cause sound or video Lost, so that the user can feel the signal interruption when moving. In order to solve the problem of fast handover, there have been some solutions in the past. The first conventional method uses a hierarchical network (Hierarchical topology) to divide the network into a domain (Domain), a sub-domain (Sub-doi ^ ain), and a border router (CrOss-Router). And base station (AP) four layers' and use the transfer (forwar (jing) and multicasting) methods to achieve fast delivery, when the action section (mn) who entered the network domain, will get an IP, 0 in This network is entered as in the first H1, and the details are as follows:

1240513 V. Description of the invention (3) Router 12, then go to the new base station. In this method, because the IP does not need to be changed, the registration process is omitted, but a large number of multiple packets are transmitted, which will increase network traffic. Furthermore, this method requires a special router to cooperate. Another conventional method is to further remove multiple transmissions to reduce network traffic. It is a method of transmitting packets using Layer 2 media acce-s control (MAC) packets. Another method that uses MAC transmission to achieve ▲ fast delivery is to use an entity's MAC layer bridge forwarder, in conjunction with MAC packet filters and databases, to control the forwarding of MAC packets. When the delivery occurs, The old base station notified the mac bridge to allow the mobile station's MAC packets to be transmitted to the base stations in other domains through the bridge. After the mobile node enters the new base station, it can obtain the MAC packets just retained; however, this MAC bridge must connect many bases station. In addition, the two methods using MAC must notify the old base station that handover is about to occur before handover, but this usually requires raising the signal threshold to allow the mobile node sufficient time to pass Handoff notification. This will reduce the actual coverage age of the base station and increase the number of deliveries. Moreover, the conventional method is that the mobile node moves to a new base station, and then starts to search for a new service agent and update the location. It cannot effectively improve the problem of long delivery delays. Pre-Registration mechanism to speed up the delivery, but these pre-registration methods assume that the service agent in the neighboring domain is already known

Page 7 f 1240513 V. Description of the invention (4) without mentioning how to find these service agents. Therefore, the present invention proposes a method for finding service agents in neighboring network domains, so that mobile nodes can perform service discovery and related resource discovery to neighboring network domains (or sub-domains) before moving. Keep it for quick delivery. [Summary of the Invention] The main object of the present invention is to provide a method for rapid network and application layer delivery using deployment information of a service domain, which is a network deployment using a service agent and a network access point. Information from the network access point identification code and the service proxy to know the address of the service agent in the neighboring domain, so that the network resources of the neighboring domain can be obtained in advance before handing over to the agent Fast delivery between to provide smooth service. The male object of the present invention is to design for the upper network layer and application layer, and propose a method for finding out service agents in the neighboring network domains in advance, so that mobile nodes can pass the neighboring agents before handing over. Make resource reservation first, provide first use or immediate use after delivery, in order to effectively improve the problem of delay in finding a new agent after delivery. Yet another object of the present invention is to enable a mobile node to request and act on resource reservations of agents in its neighboring domains by the agents in its own domain, so that it can quickly perform the handover of the underlying base station. Application layer delivery.丨 Another object of the present invention is to enable mobile nodes to use the resources of the network as soon as they enter the adjacent network domain, and report the change of location to the corresponding client as soon as possible to effectively reduce the delivery time. Page 8 1240513 V. Description of the invention (5) In order to achieve the above-mentioned purpose, the method of using the service domain deployment information for fast web roaming delivery in the present invention is to establish a domain deployment information in a service agent ^ The domain deployment information includes the corresponding table of network access point codes managed by the neighboring agents adjacent to the service agent and the location of the domain where the network access point is located; when a mobile node When a network access point managed by a service agent communicates, the service agent simultaneously transmits the domain deployment information and resource reservation table to the mobile node through the access point, so that the mobile node Based on the deployment information of this nearby domain, network resources can be obtained from nearby agents in advance, so that in the future when these agents are handed over, they can use the network resources immediately. The following detailed description will be made through specific embodiments in conjunction with the accompanying drawings, so as to better understand the purpose, technical content, features and functions of the present invention. [Implementation]: When the wireless network front-end or mobile node (MN) avoids, in addition to handing over between the wireless network base station, it may sometimes be needed at the upper network layer and application layer. Handover of Internet access point (Access Network) or network service (Service), and the delivery of network connection point and service 'hereinafter collectively referred to as "Appi icat in hand hand f", need to borrow The registration by the MN with a node or service agent (service agent) to complete 'thus causes a delay in delivery. The present invention is designed for the upper network layer and application layer, and proposes a method to find the service agent of the neighboring network domain, so that the MN can first serve the neighboring domain (or sub-domain) before moving. Search. (Service Page 1240513 V. Description of the invention (6) Discovery) and the retention of related resources, in order to achieve rapid delivery between agents, and then provide smooth services (Smooth Service). The network architecture used in the present invention is shown in the second circle. A network includes a plurality of communication areas. Here, the communication area is defined as a network domain 20, and each network domain 20 includes a plurality of f domains ( Sub-Domain) 22, each service within the domain 22 is provided and managed by a service agent (service age nt) 24, and each _ sub-domain 22 contains one or more network accesses Access point. A network access point is usually a base station in a wireless network. Since the present invention uses the application layer protocol to complete fast delivery and has no direct relationship with the underlying delivery, this method can be applied to wireless network standard equipment and wired network equipment. Embodiments of the invention. The wireless network architecture is taken as an example to describe the handover method of the present invention in detail. The referred domain 20 refers to the area jointly managed by multiple service agents 24. It is called a subnet. A subnet uses a different subnet or multiple netlists. Only one proxy is discussed. The IP of the router in the same subnet has not changed. The MN node (CN) is more aware of the location of the same subnet within the same subnet. It may consist of multiple network IPs. The way we manage one child and two base stations does not need to be new to the original one. So in other words: ^ In other words, the service in the present invention, and this service can be managed, In each agent 24, a subnet dance 22 series can be composed of subnets. In different situations, no matter how a server management method can be used, the situation of the present network. In addition, due to handover, the mobile node (MN) has a connection end (Corresponding)

1240513 V. Description of the invention (7)-delivery, so the agent 24 can be regarded as a direct connection relationship with its base station; that is, this embodiment is based on having a base description in a sub-network 24. The method for fast domain handover according to the present invention is to establish a base station configuration information in each service agent 24 and a correspondence table identifying the Dima and the network domain, so as to obtain the neighboring network domains in advance. Network resources. As shown in the third circle, a correspondence table is established in one of the agents (agent υ) as an example. According to the first example, according to the neighboring agents agent (), agent 2 and the jurisdiction of the service agent agent i, The domain deployment information of the base station (such as agent name, agent location, agent network address, base station code hosted by the agent, and base station network address, etc.), manually preset or The automatic learning method establishes a domain deployment information 26 in the service agent agent j. Using this domain deployment information M, the mobile station can obtain the network resources of the neighboring agents in advance. Similarly, in the agent agent 0 Domain deployment information is also established in agent 2, agent 2 and agent 3. Later, when a mobile node 30 enters a service agent (for example, a base station AP1 of Qiqi 1 is within the communication range, the mobile node 30 When communicating with the base station API, the service agent agent i simultaneously transmits the domain deployment information 26 to the mobile node 30 through the base station AP1, so that the action section, according to the domain deployment information 26 , T on its own or through the service The agent agent 1 obtains the network resource reservation table from the neighboring agents agent 0 and ^ 2 in advance, so that when handoff is performed between agents in the future, it can immediately use the pre-obtained information of the network asset domain decoration department. 26 and the content of the network resource reservation table, such as the fourth Λ

1240513 V. Description of the invention (8) A round and the fourth B 囷 M shown. Since these resources have been reserved in advance ', the mobile node 30 can directly notify the corresponding node (CN) of the change of location before entering the adjacent secondary network domain or / after entering a new secondary network domain. Among them, in addition to the network address (IP) information obtained in advance, it can also include resources such as service registration and bandwidth reservation. The above base station code is not limited, and can usually be the BSSID of the base station. The so-called BSSID is an application of the Ad-Hoc network. A group of computers can set up a group with the same BSS (Basic Service Set) name, and this name is called BSSID. In short, when the mobile node 30 performs the wireless network base station handover, the mobile node 30 can know the identification code of the newly connected base station. With the domain deployment information 26, the mobile node 30 can know that it Because it is in the secondary domain managed by agent agent 0 or agent 2, it can directly use the network resources reserved in advance by the agent in the new secondary domain. During the handover process of the above method, since the mobile node 30 does not need to wait for the time required for registration or acquisition after establishing a connection with the base station, rapid network layer and application layer handover can be achieved. The invention can also combine the pre-registration method, so that the mobile node 30 can perform the address and the time of the network response node (CN) address and network resource update time before the handover, and reach the process of quick registration. As will be described later, in the present invention, the mobile node capability and mobile node $ can still fetch the information and resources of the domain in advance. If the resources are updated in the action section, the source will be notified in advance, eliminating the need for re-registration and Internet speed delivery. This is detailed in the pre-note example. You do n’t need to have the ability to detect your own location. The next-to-be-accessed nearby secondary network has the ability to detect your own location.

1240513 V. Description of the invention (9) It can further predict the direction of travel, reduce the number of adjacent sub-networks that need to reserve resources, and reduce the network load (overhead) and resource waste. In addition, this method can also be combined with smooth handoff technology. Before delivery, tunnels, multleasts or bicasts are used to transmit packets to neighboring network domains to reduce handover. Lost packet on delivery. The invention uses the application layer protocol to complete the fast handover, and has no direct relationship with the underlying wireless network agreement or handover. Therefore, this method can be applied to devices with different wireless network standards, such as ΙΕΕΕ〇〇 ··丨 丨, Bluetooth and other standard wireless networks; Also, because the invention uses the application layer protocol to complete fast delivery and has no direct relationship with the underlying delivery, this method can be applied to wireless network standard equipment It can also be applied to wired network equipment.丨 ί In addition, Ben Duoming does not limit the way in which mobile nodes learn about the changes in the base station. The more common method is to actively query the status of the bottom layer (Polling) or to trigger the mobile node by the bottom layer. And other ways. Among them, the active query method is to call the application programmer interface (Application Programmers)

Interface (API) to know whether to change the connected base station, but this method is slower, and the bottom layer notification method is that the bottom layer actively notifies the mobile node when it detects the change, so it is faster. Regardless of the method, the invention is applicable, depending on the underlying supply. In addition, this method can be applied to mobile communication protocol (Mobil Ip), session initial communication protocol (Session lnitiati011 Protoc〇1, SIp) or ΙΠΠΗΓ " " ~-1240513 5. The invention description is other servo: Server (Server) or Agent (Agent) concept services. That is, the above-mentioned service agent is not limited to what it is, it is a network service performer 'such as Mobile IP's Home Agent, Foreign Agent; SIP's SIP proxy (SIP proxy); and Dynamic Host Setting Protocol (Dynamic Host Configuration Protocol (DHCP) server. So far, the spirit of the method for rapid domain transfer using the domain deployment information of the service domain agent of the present invention has been explained. The following specifically verifies and illustrates the method of the present invention with a few specific examples to familiarize yourself with this. Those skilled in the art will be able to refer to the description of this example to obtain sufficient knowledge to implement it. The first specific example is a simple SIP network domain architecture in which a sip proxy (sip proxy) requests resources from a SIP proxy in a nearby subdomain as an example, as described below. (1 · 1) Domain structure: The fifth figure is a simplified structure diagram of the SIP domain environment. This SIP domain structure includes a SIP registration server (SIP registrar) 44 under the jurisdiction of the domain 40, in the domain 40 There are four secondary network domains (SIP sub-doinain) 42. Each network domain 42 is managed by a SIP proxy. It also contains a wireless network client device (pneumatic node) MN and its corresponding connection. Client (corresponding node) CN. There can be more than one wireless network base station (AP) in the secondary network domain under the control of a letter 1SIP proxy, and the base station's BSSID is used as its identification code; a sub-domain can be a sub-domain network

1240513 V. Description of the invention (11) (subnet) Or it is composed of multiple subnets. As mentioned above, because the delivery of base stations in the same subnet uses the same ιρ, only the case where a SIP proxy manages a subnet and also provides the function of DHCP is described here. Repeat the base station handover situation in the same subnet. (1 · 2) Registration method: The registration method is shown in the sixth figure. It is a message flow during the registration process, which includes the following steps: Step 1: The mobile node MN enters the secondary domain of SIP proxy1, and sends it to SIP proxy1. File a registration request. Step 2: The SIP proxy1 forwards the registration request to the SIP registration server. Step 3: If the mobile node MN is authenticated by the SIP registration server, the SIP registration server responds with a κ signal to SIP proxy 1. Step 4 · SIP proxy1 configures network resources and IP to the mobile node MN. This completes the registration process of the mobile node MN in the secondary network domain of SIP proxy1. 0.3) Method for requesting network resources from the SIP proxy in the adjacent network domain in advance: Continuing the message flow chart in FIG. 6 illustrates the mobile node MN requesting the resources in the adjacent network domain in advance (the process is as follows: Step 5 · Mobile node The MN sends a Pre-allocation request to the SIP proxyl by using the SIP INFO packet. Step 6: The SIP proxyl obtains the domain deployment information of the SIP proxy in the neighboring network according to the preset domain deployment information, and the domain deployment information learns its Proximity domain agent

Page 15 1240513 V. Description of the invention (12) The IP address of the device is forwarded to the SIP proxy of all adjacent network domains.丨 Step 7 · The SIP proxy of Neighbor 4 reserves the resources and ip and then sends the resource reservation table to SI? Proxyl; among these SIP proxyes, security authentication must be done between them to make the neighboring SIP proxy The server can trust requests from SIP proxy1. Step 8: After the SIP proxy 1 collects the SIP proxy deployment information and resources in the neighboring SIP subdomain, the SIP proxy deployment information (including the AP identification code under its jurisdiction) and the SIP proxy in the neighboring subdomain are The resource reservation table reserved by the mobile node MN is aggregated and transmitted to the mobile node. (1.4) Fast delivery: Because the mobile node MN maintains a copy of the agent's domain deployment information and the network resource reservation table reserved by the agent for the mobile node MN, when the mobile node MN delivers to a certain node After the base station, 'Because the network resources have been reserved in advance, the mobile node MN can use the base station (AP) identification code to know the available resources' and directly send the INVITE message of step 1 to the corresponding client CN. At the same time, the mobile node MN can also directly send a registration request to the new agent. Because there is no need for agent exploration and network resource (such as P) allocation, the delivery time can be greatly reduced. In addition, if this method is combined with the mechanism of pre-updating and updating, the delivery time can be further shortened. Among them, the right of the AP's identification of Dema does not exist in the domain deployment information, the mobile node MN must re-execute according to normal procedures The resource request and registration steps, the other side-if the process of pre-reserving resources is successful, but at this time update the current location of the mobile node MN to the SIP registration server due to f

1240513 V. Description of the invention (13) If it fails for some reason, the mobile node MN must also re-execute the resource request and registration steps according to normal procedures, and it is necessary to re-issue the update of step 1 (INVITE) to the corresponding client CN. )message. When the AP identification code exists in the network domain deployment information, the message flow diagram in the delivery process is shown in Figure 7 and includes the following steps: Step 1: The node MN uses the new IP to send the corresponding client CN The update (INVITE) is issued. At this time, because the AP DM of SIP proxy2 already exists in the domain deployment information, the mobile node MN can know that it has entered the subdomain of SIP proxy2 'and can directly use SIP proxy 2 to reserve it for it. IP and network resources. Step 2: The corresponding client CN responds with an OK message to the mobile node MN. Steps 3 ~ 7 • Register and request network resources from nearby sip proxy in advance; among them, the messages of steps 3 and 7 can be sent without waiting for the κ message of step 2 to come back. Therefore, in step 1, when the mobile node When performing the update process, that is, directly using Sip and network resources reserved for it at the same time. ^ Steps 3 to 10 are described in section 1.2 and section 1.3 and the method of requesting network resources from the neighboring SIP proxy in advance (the steps are different, except that steps 3 to 6 at this time are to SIP The registration server updates the current position of the mobile node MN so that new connections in the future can know the position of the mobile node MN is breaking. Since the delivery has been completed in step 2, these messages will not increase the delivery delay. When the AP recognizes When the code does not exist in the domain deployment information, the message flow diagram during the delivery process is shown in Figure 8. At this time, the following steps are included: 1240513 V. Description of the invention (14) Steps 1 ~ 4: The mobile node MN must first Register with sip pr0xy 2. Since the AP identification code does not exist in the domain deployment information, the mobile node MN knows that IP and resources are not reserved for it in the network domain, so the mobile node MN needs to obtain a new IP In order to send an update request to the corresponding client CN. In this case, it is just like the general delivery situation, so even if the neighboring network domain cannot be known in advance, the delivery time will not be longer than the ordinary delivery process. 5: The mobile node MN uses the new IP to send an update request to the corresponding client CN. Step 6: Correspondence: The client CN responds with a 0K message to the mobile node MN. Steps 7 to 10 ·· Request network resources from the neighboring SIP proxy in advance, This method is the same as steps 5 to 8 described in section 1.3. The second specific example is that a location server (Location Agent, LA) requests resources from a nearby network domain, as detailed below. (2 · 1) Architecture circle: As shown in Figure 9, this architecture requires a location server 50. This location server 50 records the location distribution of the base station within the domain 40 and the secondary network 42 under the jurisdiction of the SIP proxy. The mobile node MN can go to the location The server 50 asks which nearby SIP agents are and which domains they belong to. (2 · 2) Registrant ': The registration process of SIP is not related to the location server 50, so the registration method is the same as the registration method of section 1.2. At this time, please refer to the steps 1 to 4 in the tenth figure for the registration procedure, so it will not be repeated here.

1240513 V. Description of the invention (15) (2.3) Method for requesting network resources from the near agent in advance: This method is different from the first specific example. As shown in the tenth circle, the registration operation is completed at the mobile node MN (step Bu 4) After that, the mobile node MN does not send a request for reserving resources to SIP proxy 1, but sends a request to the position server 50 (see step 5); then, in steps 6 to 8, the position server 50 Instead of SIP proxy1, request to reserve network resources from its neighboring SIP subdomains. The location server 50 aggregates and transmits the AP code and resource correspondence table to the mobile node MN. (2.4) Fast delivery: The fast delivery process of this specific example is shown in Figure 11. Steps 1 to 2 are the same as the previous specific example. After the mobile node MN moves to the SIP proxy 2 network domain, the mobile node MN will Knowing the new AP code, and knowing that it has entered the SIP proxy2 sub-domain through the domain deployment information; at this time, the mobile node mn can directly use the network resources of the SIP proxy2 sub-domain and issue a more update to the corresponding client CN. . New requirements. After the handover action is completed, as shown in steps 3 to 6, the 'mobile node MN can register with the SIP registration server for Location Update at the same time, and as shown in steps 7 to 10, to the neighboring domain agent. (SIP proxy) Action that requires resource reservation. However, if the AP code is not in the domain deployment information, similar to the description of the previous specific example, the mobile node MN must re-perform the steps of registration and resource requirements in accordance with normal procedures, and then issue an update request to the corresponding client CN. (2.5) Inter-domain handoff of Boundary sub-domain

I Boundary sub-domain refers to the position servo

1240513 V. Description of the invention (16) The secondary domains at the borders of the domains under the jurisdiction of the server are shown in the twelfth circle. LA1 and LA2 in the figure are two separate locations that manage different network domains. SIP pr0xy3 and SIP pr0xy4 are the boundary sub-domains between LA1 and LA2. Because the action axe point MN may be delivered to a secondary domain managed by the server in this secondary domain, however, there is no other LA in the SIP proxy or location server in the domain where the mobile node is currently located. The distribution of base stations in the domain and sub-domain data must be queried by the local location server to the nearby location server. When the mobile node MN enters the secondary network domain of the second sip network domain from the first SIP network domain, the process of requesting network resources and handover from the neighboring SIP proxy in advance is shown in Figure 13. The mobile node MN sends a request to reserve resources to the local location server LA1 (step 1). Since Lai knows that the mobile node MN sends a message via SIP proxy3 and knows that sip pr0Xy3 is a boundary sub-domain, so LA1 has to send to the original SIP. Proxy3 requests to reserve resources (steps 3 to 4). LA + also sends a request to reserve resources to the position feeder LA2 of another network domain (step 2).

Among them, LAg first sends a request for reserving resources to the border subdomain (sip Proxy4) near the second domain, and responds to LA1 after obtaining the resources (steps 5 to 7); LA 1 collects the resources and then aggregates them The network deployment information and resource reservation table are returned to the mobile node MN (step 8). At this time, the mobile node MN has the deployment information of the boundary subdomain within the LA2 jurisdiction domain. When the mobile node MN is located at the boundary of the network domain, it can also correspond to the neighboring SIP by the AP code.

Proxy 4 times domain 'and can use the network resources that have been reserved in advance or directly after delivery.

Page 20 1240513 V. Description of the invention (17) Therefore, the present invention deploys information in the service agent and the base station's network domain, so that when the mobile node enters the network domain or sub-network under the jurisdiction of a service agent In the case of a domain, you can obtain the AP code of the neighboring domain or subdomain, the IP of the agent, and the domain information through the agent, so as to request the neighboring domain or subdomain to reserve the network and use it immediately to achieve Quickly, in addition, the present invention does not limit the scope and timing of the information content. The above-mentioned examples use the examples to enable those skilled in the art to understand the patent scope of the present invention. Therefore, equivalent modifications or amendments made by the spirit are within the scope of the patent. / Resources, and then use them in advance or transfer the domain deployment information of nearby agents for the purpose of delivering and providing smooth network services to explain the characteristics of the present invention, the purpose of which is to clarify the content and implement it instead of limiting other Modifications deviating from the present disclosure should still be included in the application described below

1240513 Schematic illustration

I # = circle is the schematic circle of the knowledge transfer structure. The second is a schematic diagram of the network architecture used in the present invention. The third circle is a schematic diagram of the actions of the communication between the action node and the agent of the present invention. The fourth figure is a schematic circle of the base station code and network domain correspondence table and resource reservation table of the present invention. The fifth figure is a schematic diagram of the Sip network domain architecture used in the present invention. The sixth diagram is a message flow chart of the present invention for registering based on the architecture of the fifth diagram and requesting network resources from neighboring SIP agents in advance. The seventh picture shows the message flow circle of finding the Ap identification Daima in the present invention during delivery. The eighth circle is the message flow circle in which the Ap identification code was not found during the delivery. The ninth figure is a schematic diagram of the SIP architecture with a location server in month B of this issue. The tenth figure is a message flow chart of the present invention for registering based on the structure of the ninth figure and requesting network resources from neighboring s 1P agents in advance. The eleventh figure is a circle of fast delivery when using a position server according to the present invention. FIG. 12 is a schematic diagram of a network domain architecture handed over between domains according to the present invention. The thirteenth figure is a flow chart of messages handed over between domains according to the present invention. Horns description: 10 times domain 1 4 action section si 2 0 domain 24 service agent 12 router / mobile agent 22 times domain 26 domain deployment information

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Claims (1)

1240513 VI. Application for patent application group --- 1. A party that uses the deployment information of the service domain for fast domain delivery = its department, application-services on the network, the network has at least two communication areas · Each service in the communication area is provided and managed by a Service Agent. The method includes the following steps: ^ Each domain service deployment information is created in each service agent. -The information system includes _at least one neighboring agent adjacent to the service agent: the code of at least the factory network access point under the jurisdiction of e and the correspondence table of the network location of the network access point; and field and mobile nodes When communicating with one of the network access points managed by one of the service agents, the service agent simultaneously sends the domain deployment information and the resource reservation table of the neighboring agent through the network access point. The action point, so that the mobile node can obtain the neighboring network resources from the neighboring agent in advance according to the deployment information of the domain, in order to 'use the neighboring network immediately when handing over between the agents in the future. Road resources. 2 · A method for fast domain handover using the deployment information of the service domain as described in Item ^ of the patent scope, wherein the domain deploys the location information of the nearby agent (1?). More ° 3 · The method of fast domain transfer using the deployment information of the service domain as described in the application for patent_circle item 1, wherein the nearby network resources include service registration and bandwidth reservation. 4. The method of fast domain transfer using the deployment information of the service domain as described in item 1 of the scope of the patent application, wherein the mobile node can communicate with the service agent through the service agent in its communication area. Neighboring agents in the neighboring communication area make a pre-registration request. Page 24% 1240513 6. Patent application park »1 Γ 5 · As described in the patent request No. 1, the method of using the deployment information of the service domain for fast domain delivery, wherein when the mobile node performs the two service agents After the handover of the device, the mobile node can know the identification of the newly connected network access point, and the mobile node can know the deployment information of the domain and the corresponding table in the resource reservation table. 9 The location of the domain to directly use the nearby network resources reserved in advance by the service agent in the new communication area.6. Use the service domain information as described in the first patent scope A method for performing fast domain handover, wherein the mobile node can obtain the neighboring network resources from the neighboring generation device in advance by itself. 7. The method for rapid domain handover using the deployment information of the service domain as described in the first patent application of Fangu, wherein the mobile node can obtain the proximity from the proximity agent through the service agent in advance Network resources. 8. The method of rapid 4WI communication using the deployment information of the service domain as described in item 1 of the scope of the patent application, wherein after the mobile node obtains the neighboring network resources, J After another communication area, the mobile node can immediately use the identification code of the network access point where it is located to learn the available resources from the network deployment information and the resource reservation table. 9. The method for fast domain handover using the deployment information of the service domain as described in item 1 of the scope of the patent application, wherein after the mobile node obtains the neighboring network resources1, when the mobile node handover to another After the communication area, the mobile node can directly use the network resources of the communication area in which it is located and send an update request to the corresponding client (CN) of the original link. 10. 1 Claiming the deployment information of the service domain as described in item 1 of the patent model IS 1240513 VI. The method of fast domain delivery by applying for a patent scope, wherein the service agent is selected from the address feed Server (Location Agent) and Agent (Agent). 11 · The method of fast domain transfer using the deployment information of the service domain as described in item 1 of the scope of exclusive life coverage, wherein the code of the network access point is BSSID 〇 \ 12. If the scope of patent application The method for rapid domain handover using the deployment information of the service domain described in item 1, wherein before the mobile node enters the adjacent communication area, it can notify the corresponding client of the original link to change the location in advance . 13. The method for fast network domain handover as described in item 1 of the scope of patent application, which can be straight after near the communication area. 14. The method for fast network domain 1 handover as provided in section 1 of the scope of patent application, near network Road resources and access to adjacent network resources :. 15. The method for fast domain handover as described in item 1 of the scope of patent application, after entering the adjacent communication area, it is the resource reserved by the agent. The deployment information of the service domain is mentioned. When the mobile node enters the neighbor, it notifies the CN of the change of location. The deployment information of the use of the service domain is described. Before the mobile node obtains the neighboring area, the deployment information of the use of the service domain can be used first. 'When the mobile node is handing over, immediately In the deployment information of the utilization service domain using the adjacent communication area, the network is mobile. 17. The deployment information of the utilization domain as described in the first item of the scope of application 1. $ 1 6 · The method of fast domain handover as described in item 1 of the scope of patent application, its IP system. Method for fast domain handover in the scope of patent application, where the network can be a §ιρ domain, which is registered and managed by a SIP registration server (SIP registrar) in the SIP domain A plurality of SIp sub-domains (SIp sub-domains) are formed, and each of the sub-domains is managed by a SIp proxy (sip proxy). The SIP proxy is the service proxy. 18. The method for fast network delivery based on the deployment information of the service domain as described in item 17 of the application scope, wherein each of the sub-networks under the jurisdiction of the SIp agent contains at least one of the Network access point. 19. The method for rapid domain handover using the deployment information of the service domain as described in item 17 of the scope of patent application, wherein each sub-domain is at least one sub-network (Subnet), each of which has an ip. 20. The method for rapid domain handover using the deployment information of the service domain as described in item 17 of the scope of the patent application, wherein the SIp domain further includes a server (Location Agent), In order to record the location distribution information of the network access points in the domain under its jurisdiction and the sub-domain of the SIP proxy, at this time, the g server provides the role of the service proxy. 21. The method for fast network g delivery using the deployment information of the service domain as described in item 20 of the scope of the patent application, wherein when the mobile node delivers at the two SIP proxy times_inter-domain, The request for capital / reservation is made to the position server. '22. The method for fast domain handover using the deployment information of the service domain as described in item 1 of the scope of the patent application, wherein the service agent is a DHCP Agent. , Μ Page 27 1240513 VI. Scope of patent application 23. As described in item 1 of the scope of patent application, the method for rapid domain domain delivery using the deployment information of the service domain, wherein the service agent is a position feeding service Location Agent, the location server has recorded the corresponding relationship between the agents in the domain under its jurisdiction and the network access points, and the location distribution information of the network access points. 24. The method for fast domain handover using the deployment information of the service domain as described in item 1 of the scope of patent application, wherein the network access point is a wireless network base station. 25. The method of fast domain female delivery using the deployment information of the service domain as described in item 1 of the application scope, which is applied to wireless networks and wired networks. 26. The method for fast domain handover using the deployment information of the service domain as described in item 1 of the scope of the patent application, wherein the mobile node is a wireless network client device. 27. The method for fast domain handover using the deployment information of the service domain as described in Item 1 of the Patent Scope, where the mobile node can query the status of the underlying layer by ^ Learn about network access point changes. 28. As described in item 丨 of the scope of the patent application, the method for fast domain handover using the distribution of service domains can be achieved by the underlying node 5 (Trigger) the mobile node, Know the point of change. · ^ ^