KR20040056399A - Terminal having a function of resource reservation over mobile Internet Protocol, Resource reservation apparatus and method thereof - Google Patents

Terminal having a function of resource reservation over mobile Internet Protocol, Resource reservation apparatus and method thereof Download PDF

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KR20040056399A
KR20040056399A KR1020020082367A KR20020082367A KR20040056399A KR 20040056399 A KR20040056399 A KR 20040056399A KR 1020020082367 A KR1020020082367 A KR 1020020082367A KR 20020082367 A KR20020082367 A KR 20020082367A KR 20040056399 A KR20040056399 A KR 20040056399A
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South Korea
Prior art keywords
mobile station
cell
rsvp
path
station
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KR1020020082367A
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Korean (ko)
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KR100484495B1 (en
Inventor
김상기
최성곤
이현혜
최준균
유제훈
정상국
양선희
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한국전자통신연구원
학교법인 한국정보통신학원
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Priority to KR10-2002-0082367A priority Critical patent/KR100484495B1/en
Publication of KR20040056399A publication Critical patent/KR20040056399A/en
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Publication of KR100484495B1 publication Critical patent/KR100484495B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26Resource reservation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices

Abstract

Disclosed are a terminal device, a resource reservation device, and a method having a resource reservation function using past mobile information in a mobile IP network. The mobile station generates a table of past movement information in which the visit rate for the current cell in which the mobile station is located and the neighboring cell adjacent to the current cell is recorded as a table and transmits it to the management station. The management station sets an inactive RSVP reservation path for a cell whose visit rate of the mobile station is higher than a predetermined reference visit rate among neighboring cells based on the mobile information table. The management station also sets an active RSVP reservation path with the transmitting station to which data is to be sent to the mobile station, and sets an active RSVP reservation path for the current cell in which the mobile station is located. This allows the management station to reserve resources on behalf of the mobile station in advance for only those regions where the rate of visits to each cell of the past mobile station are above a certain threshold, thereby increasing handover success rates and are likely to visit cells. Only in advance, the management station reserves resources in advance, which can increase the efficiency of network resources.

Description

Terminal device having a resource reservation function, a resource reservation device and a method in a mobile IP network {Terminal having a function of resource reservation over mobile Internet Protocol, Resource reservation apparatus and method}

The present invention relates to a terminal apparatus having a resource reservation function using past mobility information in a mobile IP network, a resource reservation apparatus, and a method. More specifically, the past movement information of a mobile station during handover of a mobile station in a mobile IP network The present invention relates to a terminal apparatus, a resource reservation apparatus, and a method having a function of effectively reserving a resource through resource reservation protocol signaling for a changed path between a base station and a mobile station.

The Resource Reservation Protocol (RSVP), which is one of the conventional resource reservation methods, is a receiver-oriented protocol for pre-reserving network resources to be used in transmitting traffic from a resource source to a destination. 1 shows a procedure for reserving a resource on a traffic transmission path between a source and a destination through an RSVP signal. The entire system transmits the packet by selecting the most efficient path among the transmission source 100 to send the traffic, the destination 120 to receive the traffic, and the various paths between the transmission destination 100 and the destination 120. Router 110-1 and 110-2.

Referring to Figure 1 looks at in more detail about the resource reservation procedure in the system. The sender 100 transmits an RSVP PATH message including the requested traffic information to the receiver. At this time, the routers 110-1 and 110-2 on the path through which the RSVP PATH message passes store the path state for the data flow and inform the destination 120 of its resource state.

Receiving the RSVP PATH message, the destination 120 determines the characteristics of the resource desired by the resource to the routers (110-1 and 110-2) in the opposite direction of the path through which the RSVP PATH message is transmitted through the RSVP RESV message. Ask. Each of the routers 110-1 and 110-2 allocates link bandwidth and butter space for the flow if there are enough resources to satisfy, and relevant state information is written to the routers 110-1 and 110-2. Through this, a reservation path according to the end-to-end resource reservation protocol is set between the transmission destination 100 and the destination 120. If there are not enough resources in the routers 110-1 and 110-2, the resource reservation process is terminated by rejecting the request and notifying the destination 120 of the request.

However, some problems may occur when the resource reservation method based on the conventional RSVP as described above is applied to the mobile IP environment. First, RSVP is based on end-to-end connection. So, if user's location at source or destination is changed, RSVP path should be modified. In particular, the time delay for providing a new RSVP path can be a problem when the source and destination are located at a distance. This time delay causes the quality of service to deteriorate. Second, if the mobile station lacks resources in the newly visited network, the mobile station may not be guaranteed the quality of service initially contracted.

In addition, the Mobile Resource Reservation Protocol (MRSVP) proposed by AKTalukdar in 1998 is a protocol for providing QoS (Quality of Service) independently of the mobility of the mobile station. Reserve network resources in advance.

2 shows the MRSVP reservation procedure when the mobile station 250 is the recipient. The system includes a router having a function of transmitting a packet by selecting the most efficient path among various paths between the transmitting station 200 to send traffic, the mobile station 250 receiving the traffic, and the transmitting station 200 and the mobile station 250 ( 210-1 to 210-3).

In order to reserve the resources between the transmitting station 200 and the mobile station 250 in advance, it is necessary to assume that the mobile station 250 knows all of the information about the region to be visited. It informs the transmitting station 200 via the Mspec message when it is concluded. Then, the transmitting station 200 establishes an active RSVP reservation path through the active RSVP PATH message and the active RSVP RESV message for the cell 230-3 in which the mobile station 250 is currently located, and selects other cells that are likely to visit ( For 230-2 and 230-4), an inactive RSVP reservation path is set through an inactive RSVP PATH message and an inactive RSVP RESV message. In this case, the active and inactive RSVP PATH messages correspond to RSVP's RSVP PATH messages, and the active and inactive RSVP RESV messages correspond to RSVP's RSVP RESV messages. This end-to-end resource reservation process is performed through the intermediate routers 210-1 to 210-3.

However, according to the MRSVP, although the service quality can be provided without interruption, the following problems may occur. First, the mobile station needs to inform all of the cells that are likely to move to the transmitting station. The mobile station should be equipped with a separate function for identifying and storing the information used at this time, and the load of the network should be considered. Second, the mobile station wastes resources by reserving resources for the cells that are not actually moving, which leads to a decrease in overall network performance. Third, since periodic update messages must be continuously sent to all reserved paths, the cost of maintaining resource reservation in the backbone network is high.

In order to reduce the problem of resource waste in MRSVP, C.C.Tseng proposed HMRSVP in 2001. The network was viewed as a hierarchical structure and a new network component (GMA) was added. The difference from MRSVP is that resources are not reserved in advance for the movement of mobile stations within the area managed by one management station. Even when the mobile station moves to an area managed by different management stations, the mobile station does not immediately make an inactive reservation but starts a reservation when the mobile station reaches an area overlapping with an adjacent cell. This prevents unnecessary resource waste by blocking resources on unused cells.

3A and 3B show resource reservation procedures using the HMRSVP protocol when handover of a mobile station in an area managed by one management station and handover of a mobile station to an area managed by another management station, respectively. The system transmits a traffic station 300 that transmits traffic, a mobile station 340 that receives the traffic, and a management station that responds to the mobile station 340 in response to requesting the location of the mobile station 340 from another network. 320-1 and 320-2, proxy agents 330-1 through 330-4 which serve to set up an active / inactive reservation path on behalf of the mobile station 340. At this time, the control station with reference number 310-1 manages the proxy agent with reference number 320-1, and the control station with reference number 310-2 has reference numbers 320-2, 320-3 and 320-4, respectively. Manage proxy agents.

FIG. 3A illustrates a resource reservation path when the mobile station 340 moves between cells managed by proxy agents managed by the same management station (i.e., moves from a cell of reference number 330-3 to a cell of reference number 330-2). The figure is shown. An active reservation path is set between the management station 310-2 and the proxy agent 320-3 through an active path / active resource reservation message. At this time, the registration message is transmitted only to the management station with reference number 310-2, and since the movement is within the same management station, the resource is not reserved in advance for the cell with reference number 330-2.

On the other hand, Figure 3b is a cell between the proxy agent 330-2 and 330-1 managed by a management station (i.e., a management station with reference numerals 310-1 and 310-2, respectively) different from the mobile station 340. When moving (that is, when moving from the cell of the reference number 330-3 to the cell of the reference number 330-2) is a diagram showing a resource reservation path.

As soon as the mobile station 340 moves to the overlapping region of the cell 330-2 and the cell 330-1, the mobile station 340 obtains a new care-of-address (COA) from the proxy agent 330-1. The proxy agent 330-1 updates the location of the mobile station 340 by sending the registration message to the management station having the reference number 310-1. After the location registration procedure ends, the inactive reservation path is established between the transmitting station 300 and the corresponding proxy agent 320-1 by exchanging an inactive path / inactive resource reservation message through a management station of reference 310-1. However, when the mobile station moves in an area managed by one management station as shown in FIG. 3A, the HMRSVP may not have enough resources in the area where the mobile station moves. In this case, the mobile station cannot be provided with the initially negotiated quality of service.

The technical problem to be achieved by the present invention is a terminal device having a function of generating and transmitting visit information for each cell and a resource reservation device having a function of reserving resources by using the visit information transmitted from the terminal device. To provide.

Another technical problem to be solved by the present invention is a terminal device having a function of generating and transmitting visit information for each cell and a resource reservation device having a function of reserving resources by using the visit information transmitted from the terminal device. The present invention provides a resource reservation method that can increase the handover success rate of a mobile station and efficiently utilize network resources.

1 illustrates a procedure of reserving a resource through a conventional RSVP signal;

2 is a diagram illustrating a procedure for reserving resources when a mobile station performs handover using a conventional MRSVP;

FIG. 3A illustrates a procedure of reserving resources when a mobile station hands over in an area managed by one management station using a conventional HMRSVP; FIG.

3b is a diagram illustrating a procedure of reserving resources when a mobile station hands over to an area managed by another management station using a conventional HMRSVP;

4 is a diagram illustrating a connection relationship of a resource reservation apparatus in a mobile IP network according to the present invention;

5 is a diagram illustrating a configuration of an embodiment of a terminal device having a resource reservation function according to the present invention;

6 is a diagram showing the configuration of an embodiment of a resource reservation apparatus according to the present invention;

FIG. 7 is a flowchart illustrating a process of performing resource reservation procedure between a transmitting station and a mobile station in the mobile IP network shown in FIG. 4;

8 is a table showing a past visit rate to a cell adjacent to a cell where a mobile station is located;

9 is a diagram illustrating a flow of messages transmitted between a transmitting station, a managing station, and a mobile station in the course of performing a resource reservation method in a mobile IP network according to the present invention;

FIG. 10 is a diagram illustrating a flow of a message for a new resource reservation on a changed path between a management station and a cell to which the mobile station intends to move when the mobile station attempts to move to a cell other than the predicted cell.

In order to achieve the above technical problem, a terminal device having a resource reservation function in a mobile IP network according to the present invention includes a movement generated based on a past visit rate for a first neighboring cell adjacent to a current cell currently located. A storage unit which stores a table in which information is recorded; A routing unit configured to transmit an active RSVP RESV message to the external device when the active RSVP PATH message is received from an external device and to respond to the setting of an active RSVP reservation path; And a table manager which updates the table based on the movement information of the second neighbor cell adjacent to the newly entered cell and transmits the updated table to the external device.

In accordance with another aspect of the present invention, there is provided a resource reservation apparatus in a mobile IP network according to the present invention, in which a mobile information table storing a visit rate for a first neighboring cell adjacent to a current cell in which a mobile station is located is stored. Storage unit; A route reservation unit for setting an inactive RSVP reservation path for a cell having a visit rate of the mobile station higher than a predetermined reference visit rate among the first adjacent cells based on the movement information table; And a routing unit configured to set an active RSVP reservation path with a transmission station to transmit data to the mobile station and to set an active RSVP reservation path for the current cell.

In accordance with another aspect of the present invention, there is provided a resource reservation method in a mobile IP network, comprising: receiving a mobile information table in which a visit rate for a first neighboring cell adjacent to a current cell in which a mobile station is located is recorded; Making; Setting an active RSVP reservation path with a transmitting station to which data is to be transmitted to the mobile station, and setting an active RSVP reservation path for the current cell; And setting an inactive RSVP reservation path for a cell of which the visit rate of the mobile station is higher than a predetermined reference visit rate among the first neighboring cells based on the movement information table.

According to the present invention, it is possible to increase the handover success rate and to visit by viewing the visit rate for each cell of the mobile station in the past and for the management station to reserve the resource in advance on behalf of the mobile station only in regions where the rate exceeds a certain threshold. The management station reserves resources only for high cells in advance, thus increasing the efficiency of network resources.

Hereinafter, a resource reservation apparatus according to the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings and descriptions refer to like elements.

4 is a diagram illustrating a connection relationship of a resource reservation apparatus according to the present invention.

Referring to FIG. 4, the mobile IP network 400 includes a transmitting station 410, a management station 420, and a mobile station 430. Transmitter 410 transmits traffic destined for mobile station 430. The management station 420 responds on behalf of the mobile station 430 when receiving the location request of the mobile station 430 from another network, and stores and manages the past movement information of the mobile station 430. The mobile station 430 generates, stores, and manages its past mobile information, and receives traffic through the management station 420.

5 is a block diagram showing a detailed configuration of the mobile station 430. As shown in FIG.

Referring to FIG. 5, the mobile station 430 includes a storage unit 500, a routing unit 510, and a table manager 520.

The storage unit 500 stores a movement information table in which movement information generated based on a past visit ratio of a neighboring cell adjacent to the current cell in which the mobile station 430 is currently located is recorded. When the routing unit 510 receives the active RSVP PATH message from the management station 420, the routing unit 510 transmits an active RSVP RESV message to the management station 420 to respond to the setting of the active RSVP reservation path.

The table management unit 520 updates the movement information table stored in the storage unit 500 based on the changed visit rate at the time of handover of the mobile station 430 and transmits the updated movement information table to the management station 420.

6 is a block diagram showing the detailed configuration of the management station 420. As shown in FIG.

Referring to FIG. 6, the management station 420 includes a storage unit 600, a route reservation unit 610, and a route setting unit 620.

The storage unit 600 stores a movement information table in which a past visit rate for an adjacent cell adjacent to the current cell in which the mobile station 430 is located is recorded.

The route reservation unit 610 is a cell higher than a reference visit rate (eg, 80%) in which the visit rate of the mobile station 430 is set among neighboring cells based on the movement information table stored in the storage unit 600. Set an inactive RSVP reservation path for.

If the mobile station 430 enters one of the neighbor cells, the management station 420 enters the mobile information table based on the visit rate of the mobile station 430 for the cell adjacent to the cell in which the mobile station 430 enters. The movement information table stored in the storage unit 600 is updated. In this case, the route reservation unit 610 is inactive for a cell higher than the reference visit rate at which the visit rate of the mobile station 430 is set among the cells adjacent to the cell where the mobile station 430 enters based on the updated mobility information table. Set the RSVP reservation path and release the inactive RSVP reservation path set for the previous neighbor cell.

The routing unit 620 sets an active RSVP reservation path with the transmission station 410 to transmit data to the mobile station 430, and sets an active RSVP reservation path for the cell where the mobile station 430 is located. If the mobile station 430 enters an adjacent cell in which the inactive RSVP reservation path is set, the routing unit 620 activates the inactive RSVP reservation path and releases the active RSVP reservation path set for the current cell. .

FIG. 7 is a flowchart illustrating a process of performing a resource reservation procedure between a transmitting station 410 and a mobile station 430 in the mobile IP network shown in FIG. 4.

Referring to FIG. 7, the transmitting station 410 transmits an RSVP PATH message to the management station 420 (S700). Upon receiving the RSVP PATH message, the management station 420 transmits an RSVP RESV message to the transmitting station 410 (S710). Through the above process, an RSVP reservation path Aa is established between the transmitting station 410 and the management station 420.

Meanwhile, the management station 420 transmits an RSVP RESV message to the transmitting station 410 and simultaneously transmits an active RSVP PATH message to the mobile station 430 currently located in the cell 1 (C1) (S720). Receiving an active RSVP PATH message, the mobile station 430 responds with an active RSVP RESV message (S730). This establishes an active RSVP reservation path Ab between the management station 420 and the mobile station 430.

In addition, the management station 420 transmits the RSVP RESV message to the transmitting station 410 and simultaneously transmits the inactive RSVP PATH message to the cell 2 (C2) in which the mobile station 430 is expected to move (S740). Receiving the inactive RSVP PATH message, the cell 2 (C2) transmits an active RSVP RESV message to the management station 420 (S750). This message exchange establishes an inactive RSVP reservation path Ac between management station 420 and cell 2 (C2).

8 shows a table in which the visit rate to a cell adjacent to the cell where the mobile station is located is recorded. Existing MRSVPs establish inactive RSVP routes in all areas that are likely to be visited, but in the resource reservation system and method according to the present invention, the visiting rate is determined by a manager's policy. Only the region that satisfies) will the station establish an inactive RSVP path. When the threshold value is set to 80%, according to the visit rate shown in Fig. 8, the management station 420 establishes an inactive RSVP path with cell 2 (C2) whose visit rate is greater than or equal to the threshold value.

9 is a diagram illustrating a flow of messages transmitted between a transmitting station, a management station, and a mobile station in the course of performing a resource reservation method according to the present invention. Unlike the conventional RSVP message flow, all RSVP messages of the resource reservation method according to the present invention are transmitted through the management station 420, and a direct end-to-end RSVP reservation path is established between the transmitting station 410 and cell 1 (C1). Rather, one RSVP reservation path Aa is set between the transmitting station 410 and the management station 420, and one reservation path Ab between the management station 420 and the cell 1 (C1).

At this time, another RSVP reservation path Ac is set between the management station 420 and the cell 2 (C2) in preparation for the movement of the mobile station 430. The path Ac established between the management station 420 and the cell 2 (C2) is inactive until the mobile station 430 moves to the cell 2 (C2), and then the mobile station 430 is in the cell 2 (C2). Go to to activate it. That is, until the mobile station 430 moves to cell 2 (C2), only resources for the mobile station 430 are reserved, and data packets are not transmitted, but the mobile station 430 moves to cell 2 (C2). Only then will data packets flow. As the mobile station 430 moves to cell 2 (C2), the reservation path Ab set between the management station 420 and cell 1 (C1) is released.

FIG. 10 shows the flow of a message for a new resource reservation on the changed path between the management station 420 and cell 3 (C3) when the mobile station 430 attempts to move to a cell other than cell 2 (C2), which is the expected region. Figure is shown.

When mobile station 430 enters the overlapped region between cell 1 (C1) and cell 3 (c3) to move from cell 1 (C1) to cell 3 (C3) rather than cell 2 (C2), mobile station 430 ) Collects past movement information in cell 3 (C3), updates its movement information table, and sends it to management station 420. Past movement information in the cell 3 (C3) is transmitted to the management station 420 in the form of a table in which the visit rate shown in FIG. 8 is recorded. Management station 420 sends an active RSVP PATH message to cell 3 (C3) and cell 3 (C3) responds to it with an active RSVP RESV message so that an active RSVP reservation path is established between management station 420 and cell 3 (C3). Is set. At the same time, the management station 420 stores past movement information received from the mobile station 430 and again compares the visit rate with the policy limit to determine a new cell for inactive resource reservation.

If the determined cell is cell 4 (C4), management station 420 sends an inactive RSVP PATH message to cell 4 (C4) and cell 4 (C4) responds to management station 420 with an inactive RSVP RESV message to management station 420. ) And cell 4 (C4), an inactive RSVP reservation path is established. The management station 420 transmits a resource release message to the cell 1 (C1) and the cell 2 (C2) to release the active RSVP path Ab and the inactive RSVP path Ac previously used.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific preferred embodiments described above, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

According to the resource reservation method and system according to the present invention, the handover success rate can be improved by looking at the visit rate for each cell of the past mobile station and reserving the resource in advance on behalf of the mobile station only for the region where the rate exceeds a certain threshold value. The management station reserves resources for only those cells that are more likely to be visited and are more likely to visit, thus increasing the efficiency of network resources compared to the technology that reserves resources for all cells in advance. In addition, since resource reservation messages are always transmitted through the management station, the end-to-end RSVP reservation path is divided into two reservation paths, that is, a path between the transmitting station and the management station and a path between the management station and the receiving station. In this case, the RSVP reservation path needs to be reset only for the changed path, thereby reducing signaling overhead for the entire path.

Claims (9)

  1. A storage unit for storing a table in which movement information generated based on a past visit rate with respect to a first adjacent cell adjacent to a current cell currently located is stored;
    A routing unit configured to transmit an active RSVP RESV message to the external device when the active RSVP PATH message is received from an external device and to respond to the setting of an active RSVP reservation path; And
    And a table manager for updating the table based on a past visit rate of a second neighboring cell adjacent to a newly entered cell and transmitting the updated table to the external device. Terminal device with a reservation function.
  2. A storage unit for storing a mobile information table in which a visit rate for a first adjacent cell adjacent to the current cell in which the mobile station is located is recorded;
    A route reservation unit for setting an inactive RSVP reservation path for a cell having a visit rate of the mobile station higher than a predetermined reference visit rate among the first adjacent cells based on the movement information table; And
    Resource setting device in the mobile IP network comprising a; routing unit for setting the active RSVP reservation path with the transmission station to transmit data to the mobile station, and the active RSVP reservation path for the current cell; .
  3. The method of claim 2,
    If an RSVP PATH message is received from the transmitting station,
    The routing unit transmits an RSVP RESV message to the transmitting station, establishes an RSVP reservation path for the transmitting station, transmits an active RSVP PATH message to the mobile station, and receives an active RSVP RESV message from the mobile station. Resource reservation device in the mobile IP network, characterized in that for setting the reservation path.
  4. The method of claim 2,
    When the mobile station enters a second neighbor cell which is one of the first neighbor cells,
    The mobile information table stored in the storage unit is updated with a visit rate of the mobile station for a third adjacent cell adjacent to the second adjacent cell received from the mobile station,
    The route reservation unit sets an inactive RSVP reservation path for a cell having a visit rate of the mobile station higher than a predetermined reference visit rate among the third neighbor cells based on the updated mobility information table, and inactivates among the first neighbor cells. And a device for releasing said inactive RSVP reservation path for a cell in which an RSVP reservation path is set.
  5. The method of claim 3, wherein
    When the mobile station enters a cell in which the inactive RSVP reservation path is set among the first neighbor cells,
    The route setting unit activates the inactive RSVP reservation path set for the cell to which the mobile station enters, and releases the active RSVP reservation path set for the current cell. Device.
  6. Receiving a mobile information table in which a visit rate for a first adjacent cell adjacent to the current cell in which the mobile station is located is recorded;
    Setting an active RSVP reservation path with a transmitting station to which data is to be transmitted to the mobile station, and setting an active RSVP reservation path for the current cell; And
    Setting an inactive RSVP reservation path for a cell having a visit rate of the mobile station higher than a predetermined reference visit rate among the first neighboring cells based on the mobile information table; Resource reservation method.
  7. The method of claim 6,
    The active RSVP routing step,
    Receiving an RSVP PATH message from the transmitting station;
    Sending an RSVP RESV message to the transmitting station to establish an RSVP reservation path for the transmitting station;
    Sending an active RSVP PATH message to the mobile station; And
    Setting an active RSVP reservation path for the mobile station upon receiving an active RSVP RESV message from the mobile station.
  8. The method of claim 6,
    Identifying a position of a newly entered cell from the mobile station;
    If it is determined that the mobile station has entered a second neighbor cell, which is one of the first neighbor cells, the mobile station is updated based on a visit rate of the mobile station to a third neighbor cell adjacent to the second neighbor cell; Updating the movement information table;
    Setting an inactive RSVP reservation path for a cell of which the visit rate of the mobile station is higher than a predetermined reference visit rate among the third neighbor cells based on the updated mobility information table; And
    And releasing the inactive RSVP reservation path for the cell in which the inactive RSVP reservation path is set among the first neighboring cells.
  9. The method of claim 8,
    If it is determined that the mobile station has entered a cell in which the inactive RSVP reservation path is established,
    Activating the inactive RSVP reservation path established for the cell in which the mobile station has entered; And
    And releasing an active RSVP reservation path set for the current cell.
KR10-2002-0082367A 2002-12-23 2002-12-23 Terminal having a function of resource reservation over mobile Internet Protocol, Resource reservation apparatus and method thereof KR100484495B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100645432B1 (en) * 2004-11-04 2006-11-15 삼성전자주식회사 Method of signalling a QoS information at the hand-over between the access networks in a IP-based core network

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Publication number Priority date Publication date Assignee Title
EP1871050B1 (en) 2006-06-20 2012-01-25 Alcatel Lucent Wimax network, Wimax network element and method of handling QoS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100645432B1 (en) * 2004-11-04 2006-11-15 삼성전자주식회사 Method of signalling a QoS information at the hand-over between the access networks in a IP-based core network

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