IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0145225
(1998-09-01)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
6 |
초록
▼
Mobile terminal handoff control is provided for point to multipoint (PMP) connections in Mobile ATM networks. Special issues for the handoff control in all three types of PMP connections are taken care of, including cross over switch discovery and handoff path re-routing. A protocol for a PMP connec
Mobile terminal handoff control is provided for point to multipoint (PMP) connections in Mobile ATM networks. Special issues for the handoff control in all three types of PMP connections are taken care of, including cross over switch discovery and handoff path re-routing. A protocol for a PMP connections signaling mechanism is presented, which works with all three types of PMP connections and has a lossless control function. The PMP connection tree topology is protected.
대표청구항
▼
Mobile terminal handoff control is provided for point to multipoint (PMP) connections in Mobile ATM networks. Special issues for the handoff control in all three types of PMP connections are taken care of, including cross over switch discovery and handoff path re-routing. A protocol for a PMP connec
Mobile terminal handoff control is provided for point to multipoint (PMP) connections in Mobile ATM networks. Special issues for the handoff control in all three types of PMP connections are taken care of, including cross over switch discovery and handoff path re-routing. A protocol for a PMP connections signaling mechanism is presented, which works with all three types of PMP connections and has a lossless control function. The PMP connection tree topology is protected. hod of rerouting a PVC route on an ATM network, including steps of: previously defining a plurality of alternate routes for the PVC route which are managed in an ATM network managing system; and switching the PVC route to one of the previously defined alternative routes when a fault occurs in a network element forming the PVC route. 2. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising step of determining an order of relief for a plurality of PVC routes in accordance with information of importance in which each PVC route previously holds when the fault occurs, and rerouting the PVC route based on the order of relief. 3. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising step of executing a check of situation of the alternate route when the defined route cannot be used as the alternate route due to the fault or when a route is not defined as the alternate route, and notifying the situation. 4. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising a step of notifying whether an alternation route should be returned to a previous route before alternation when the previous route is recovered during use of the defined alternate route, and a step of returning to the previous route. 5. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising steps of, when defining the alternate route or at any time, comparing the alternate rout with the previous route before alternation for each structural element of the PVC route on the alternate route defined when executing an actual switching process; sorting an element necessary for newly preparing in the alternate route after alternation; with an element which can utilize the present element before alternation; and previously defining an effective switching order so as to omit decision process when executing switching process. 6. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising steps of previously setting the alternate route for each segment, and re-setting the alternate route for only segment which is disconnected, and making the alternate route which reroutes between only faulty segments on the PVC which includes a plurality of segments. 7. A method of rerouting a PVC route in an ATM network as claimed in claim 6, further comprising steps of determining whether a present VP/VC on the alternate route can be utilized or not as the alternate route at registration of the same; executing registration as the alternate route for the VP/VC which was determined as the alternate route which can be utilized; and diverting an element VP/VC of another PVC route which exists on the alternate route. 8. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising steps of providing an interactive means for a maintenance operator when executing alternate route switching process; providing a relief order information of a faulty PVC route, an attribute information of the faulty PVC route, and a candidate information of changeable PVC route to the maintenance operator; and determining the alternate route based on the maintenance operator's decision. 9. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising a step of, when there are a plurality of alternate routes, designating a priority order of change of the route in an alternate route list for each route, at registration by the maintenance operator or at any time, so that the flexibility of route selection can be increased. 10. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising a step of, when there are a plurality of alternate routes, extracting a degree of margin for an average value or a maximum value of a band in each structural element of the alternate route candidate from a resource managing function and an actual network when the f ault occurs, so that an optimum changing order of the alternate route having a margin for the resource can be automatically set in the network managing system. 11. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising a step of, when there are a plurality of alternate routes, assuming a line margin for line interface or connection in each structural element of the alternate route candidate when fault occurs, from transmission amount of cells or traffic information in the network managing system during a predetermined interval before the fault occurs; and comparing the information extracted from the network managing system and the actual network, so that a switching order of an optimum alternate route having little traffic amount can be automatically set. 12. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising a step of, when there are a plurality of alternate routes, extracting an activity ration of a CPU in the network element NE including each structural element of the alternate PVC route candidate when the fault occurs, from the network managing system and the actual network, so that an optimum alternate route switching order having little load of a CPU can be automatically set. 13. A method of rerouting a PVC route in an ATM network as claimed in claim 6, further comprising steps of previously setting a VP/VC for a PVC route on the alternate route, providing situation in which the VP/VC for the PVC route to be alternated has been already completed on the alternate line when executing alternation, and switching only connections at a start point and end point of alternation when the line is disconnected. 14. A method of rerouting a PVC route in an ATM network as claimed in claim 1, further comprising steps of providing means for sharing the alternate route by a plurality of main routes, and providing means for notifying shared situation and used situation of the alternate route. 15. A network management system connected to a plurality of network elements provided on a permanent virtual channel (PVC) route through a predetermined communication network, each network element including an element data collecting means and a fault notifying means, and the system comprising: an ATM network resource managing means for managing resources included in the ATM network; a PVC route connection managing means connected to the element data collecting means through the communication network for managing situation of connection of the PVC route; a PVC route searching means for searching a plurality of PVC routes; a fault event analyzing means for receiving a fault from the fault notifying means through the communication network when the fault occurs at any one of the network elements, and analyzing the fault; an alternate route defining means for previously defining a plurality of alternate routes for the PVC route; and an alternate route processing means for switching a faulty route to one of the plurality of alternate routes defined by the alternate route defining means when the fault occurs at any one of network elements. 16. A network management system as claimed in claim 15, wherein the alternate route defining means comprises and alternate route selecting unit and a faulty PVC route switching table, wherein the alternate route selecting unit selects any one of PVC routes from the faulty PVC route switching table, and the faulty PVC route switching table is formed by a plurality of faulty element containing PVC routes and a plurality of changeable PVC routes each corresponding to each faulty element containing PVC route. 17. A network management system as claimed in claim 15, further comprising a PVC relief order determining means connected between the faulty event analyzing means and the alternate route defining means, for determining an order of relief for the PVC route based on information of importance which is previously held in each PVC rou
※ AI-Helper는 부적절한 답변을 할 수 있습니다.