WO2003077587A1 - Systeme de gestion d'un reseau de zone radio et systeme de gestion d'un reseau de zone elargie - Google Patents
Systeme de gestion d'un reseau de zone radio et systeme de gestion d'un reseau de zone elargie Download PDFInfo
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- WO2003077587A1 WO2003077587A1 PCT/JP2002/002348 JP0202348W WO03077587A1 WO 2003077587 A1 WO2003077587 A1 WO 2003077587A1 JP 0202348 W JP0202348 W JP 0202348W WO 03077587 A1 WO03077587 A1 WO 03077587A1
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- Prior art keywords
- control
- mobile terminal
- radio
- area network
- control server
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/088—Load balancing or load distribution among core entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/02—Inter-networking arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device
Definitions
- the present invention relates to a control method of a wireless area network.
- the third-generation mobile network that applies W-CDMA (Wideband-Code Division Multiple Access) wireless technology has been joined by 3GPP (3 rd Generation Partnership Project), an industry standardization organization, in J: As described on page 96 of Tetsutou (Dr. "W-CDMA Mobile Communication System” (Supervised by Keiji Tachikawa, published by Maruzen on June 25, 2001), the radio area network (called RAN) And a core network (referred to as CN)
- the wireless area network related to the present invention is a radio control and terminal migration depending on the W-CDMA (Wideband—Code Division Multiple Access) radio technology. This is a network that performs dynamic control.
- FIG. 11 shows the configuration of the wireless area network.
- 1 is a packet switch belonging to the core network (CN)
- 2 is a voice switch belonging to the core network (CN).
- 3a to 3c are base station controllers (RNCs) belonging to a radio area network (RAN)
- 4a to 4d are base stations (NodeB) belonging to a radio area network (RAN).
- 5 indicates a mobile terminal (MS).
- FIG. 12 is a diagram showing an outline of an operation at the time of transmission from a mobile terminal (MS) in a wireless area network (RAN).
- the mobile terminal (MS) 5 When starting the voice packet communication, the mobile terminal (MS) 5 first requests the radio network controller (RNC) 3 a to c to allocate radio signaling resources necessary for signaling transmission.
- RNC radio network controller
- This request is sent to the base station control device via a base station (No de B) 4a ⁇ (! That terminates this channel using a wireless common channel that can be used by all mobile terminals (MS) 5.
- (RNC) 3 a to c are notified
- the base station controller (RNC) 3 a to c allocates a radio dedicated channel used by the mobile terminal (MS) 5 for signaling transmission from this request.
- the base station (No de B) 4a to (!) Is notified of the radio dedicated channel information.
- resources such as spreading codes and frequencies are allocated to the mobile terminal (MS) 5.
- the base station controllers (RNCs) 3a to 3c transmit this radio dedicated channel information to the mobile terminal (MS). Notify to 5. This completes the allocation of radio signaling resources, and then the mobile terminal ( The MS) 5 uses the radio signaling resources to notify the core network (CN) of a request for packet transmission or voice transmission, and the core network (CN) uses the request for packet transmission or voice communication. Requesting the allocation of radio communication resources to be performed to the base station controllers (RNCs) 3 a to c.
- the base station controllers (RNCs) 3 a to 3 c determine an increase in the number of radio dedicated channels to be used, and This is notified to the base station (No de B) 4a ⁇ (!.
- the base station control is performed.
- the devices (RNCs) 3 a to 3 c inform the mobile terminal (MS) 5 of the radio dedicated channel information, thereby completing the allocation of the radio communication resources, and the mobile terminal (MS) 5 , Packet communication or voice call is possible Becomes
- Fig. 12 shows the flow related to security and authentication information transmitted and received between the mobile terminal (MS) and the radio area network (RAN) Z-core network (CN).
- the flow related to various synchronous Z timing controls and the transmission and reception of various information between the mobile terminal (MS) and the core network (CN) are omitted.
- RAN future wireless area network
- MW IF Mobile Wireless Internet Forum
- M TR 00 7 v 1.0.0 Op RAN Architecture
- the mapping between the Open Wireless Area Network (OPEN RAN) and the 3GPP Wireless Area Network (3GPP RAN) described on page 52 of this document is shown in Figure 13.
- OPEN RAN Open Wireless Area Network
- 3GPP RAN 3GPP Wireless Area Network
- the base station controller (RNC) 3 ac is connected to a bearer plane (Bearer P 1 ane) that handles user traffic, and a mobile terminal (MS) and a base station (No de B).
- the control plane (Control Plane) to be controlled is divided into two planes, each of which is allocated to a part that handles cell resources described as CRNCZDRNC and a mobile terminal (MS) described as SRNC. It is separated into parts that handle resources. This configuration suggests that there is a possibility that the current configuration may be disassembled and reconfigured for the purpose of optimally allocating many functions of the current base station controller (RNC).
- the present invention is based on the premise that a radio area network (RAN) will be developed based on the MW IF's open radio area network architecture (Op en RAN Architecture), and will solve the problems in the open radio area network architecture. is there.
- the control plane of the station control device (RNC) is divided into a part that controls cell resources and a part that controls each mobile terminal (MS). The number will be increased according to the number of mobile terminals (MS). This indicates that the control of the base station controller (RNC) is distributed to the functions of cell control and mobile terminal (MS) control, and the load is controlled at each level of cell control or mobile terminal (MS) control.
- RNC station control device
- This method of function distribution is described, but the load distribution method of each function is not specified.
- An object of the present invention is to provide a load distribution method applicable in this new wireless area network architecture. Disclosure of the invention
- a wireless relay network control system comprising a plurality of mobile terminal control radio control servers, comprising:
- Each of the plurality of mobile terminal control radio control servers continuously transmits its own resource use status to the cell control radio control server
- the cell control radio control server continuously receives the resource usage status
- the cell control radio control server upon receiving a radio signaling resource allocation request originating from the transmission from the mobile terminal, An optimal mobile terminal control radio control server is selected based on the resource usage status, and the request for allocating the radio signaling resources is transferred to the selected mobile terminal control radio control server.
- the plurality of mobile terminal control radio control servers perform periodic transmission as the continuous transmission.
- the plurality of mobile terminal control radio control servers perform the continuous transmission together with the transmission of the radio dedicated channel assignment request transferred to the mobile terminal via the cell control radio control server. It is characterized by the following.
- the plurality of mobile terminal control radio control servers perform the continuous transmission together with the transmission of the radio individual channel change request transferred to the mobile terminal via the cell control radio control server. It is characterized by performing.
- the plurality of mobile terminal control radio control servers perform the continuous transmission when the resource usage status exceeds a predetermined threshold.
- the wireless area network control system has a plurality of cell control radio control servers corresponding to a common cell,
- the plurality of mobile terminal control radio control servers transmit the continuous transmission to the plurality of cell control radio control servers by an IP. (Internet Protocol) It is characterized by performing multicast communication.
- IP Internet Protocol
- the cell control radio controller reads the ID of the mobile terminal included in the received radio signaling resource allocation request originating from the received transmission from the mobile terminal, and in addition to the resource usage status, Selecting the optimal mobile terminal control radio control server based on the read ID of the mobile terminal,
- the mobile terminal control radio control server reads an ID of the mobile terminal included in the transferred request for allocating the radio signaling resource, and reads a radio signaling resource corresponding to the read ID of the mobile terminal. When the assignment process is being performed, the transferred wireless signaling resource assignment request is discarded.
- the mobile terminal control radio control server calculates a total cost based on a mobile terminal control number for each service provided to the mobile terminal and a processing cost for each service, and calculates the calculated total cost. Transmitting to the cell control radio control server as the resource use status.
- the cell control radio control server reads the ID of the mobile terminal included in the request for allocating a radio signaling resource originating from the received transmission from the mobile terminal, and based on the read ID of the mobile terminal.
- a wide area wireless area network control system includes a cell control radio control server having a function of controlling a common resource related to a cell among functions of a control plane of a base station control device belonging to a wireless area network.
- a wide-area wireless area network control system which is provided with a plurality of wireless area network control systems comprising a plurality of mobile terminal control radio control servers equipped with functions to control each mobile terminal, corresponding to a plurality of adjacent areas The system
- Each cell control radio control server can communicate with each other. In addition, it constantly keeps track of the resource usage status of a plurality of mobile terminal control radio control servers of each radio area network control system, and The mobile server, when the mobile terminal using the wireless dedicated channel moves, controls the mobile terminal by controlling the mobile terminal control radio of one of the wireless area networks corresponding to the destination area. If it is decided to delegate to the control server, the cell control radio control server of the wireless area network corresponding to the original area is replaced with the mobile terminal control radio control server of the wireless area network corresponding to the destination area. , Available mobile terminal control radio control Query over server,
- the cell control radio control server of the wireless area network corresponding to the original area transfers the inquiry to the cell control radio control server of the wireless area network corresponding to the destination area, and the wireless control server corresponding to the destination area.
- the cell control radio control server of the area network determines the mobile terminal control radio control server to be used based on the resource usage status, and sends the notification of the mobile terminal control radio control server to use to the original area. Supported wireless Return to the mobile terminal control radio control server of the wireless area network corresponding to the original area via the area network cell control radio control server,
- the mobile terminal control radio control server of the wireless area network corresponding to the original area transfers the control of the mobile terminal to the mobile terminal control radio control server to be used based on the received notification. Starting the procedure.
- the wide area wireless area network control system according to the present invention
- a wide area wireless area network control system comprising a plurality of wireless area network control systems comprising:
- the exchange counts a packet or voice transmission request from a corresponding mobile terminal control radio control server, measures a load on each mobile terminal control radio control server based on the count,
- the mobile terminal control radio control server according to the movement of the mobile terminal using the wireless dedicated channel, controls the mobile terminal by controlling any one of the mobile units of the wireless area network corresponding to the destination area. If it is decided to transfer to the terminal control radio control server, a request to change the mobile terminal control radio control server is sent to the exchange belonging to the core network corresponding to the destination area,
- the exchange belonging to the core network corresponding to the destination area determines the mobile terminal control radio control server to be used. Decided, decided
- a wide area wireless area network control system includes a cell control radio control server having a function of controlling a common resource related to a cell among functions of a control plane of a base station control device belonging to a wireless area network;
- a wide area wireless area network control system in which a plurality of wireless area network control systems comprising a plurality of mobile terminal control radio control servers having a function to control each mobile terminal are provided corresponding to a plurality of adjacent areas The system
- the cell control radio control server keeps track of the resource usage status of the plurality of mobile terminal control radio control servers, and receives a request for updating a cell from a mobile terminal using a wireless common channel.
- a mobile terminal control radio control server to be newly used is determined based on the resource use status, and the camping cell update request is transmitted to the newly used mobile terminal control radio control server as soon as possible.
- the newly used mobile terminal control radio control server identifies the mobile terminal control radio control server that is currently controlling the mobile terminal from the received camping cell update request, and performs the mobile control currently being controlled. Forward the camping cell update request to the body terminal control radio control server,
- the currently controlled mobile terminal control radio control server Based on the received camping cell update request, the currently controlled mobile terminal control radio control server sends a request to the newly used mobile terminal control radio control server to control the mobile terminal. Commission A transfer procedure is started. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 shows a wireless area network architecture on which the first embodiment of the present invention is based.
- FIG. 2 is an information flow of wireless control at the time of terminal transmission according to Embodiment 1 of the present invention.
- FIG. 3 is an information flow of wireless control at the time of terminal transmission according to Embodiment 2 of the present invention.
- FIG. 4 is a conceptual diagram illustrating an operation in a wireless area network architecture for wireless control according to the fourth embodiment of the present invention.
- FIG. 5 is an information flow of wireless control at the time of terminal transmission according to Embodiment 5 of the present invention.
- FIG. 6 is a total cost calculation table prepared for realizing the sixth embodiment of the present invention.
- FIG. 7 shows a wireless area network architecture as a premise of the ninth embodiment of the present invention.
- FIG. 8 is an information flow of radio control at the time of terminal hard handover according to Embodiment 9 of the present invention.
- FIG. 9 is an information flow of radio control at the time of terminal handover in the tenth embodiment of the present invention.
- FIG. 10 is an information flow of radio control at the time of location update according to Embodiment 11 of the present invention.
- FIG. 11 shows a conventional wireless area network.
- FIG. 12 is an information flow showing control in a wireless area network at the time of terminal transmission in a conventional wireless area network.
- Fig. 13 is a conceptual diagram of a comparison between the open wireless area network architecture and the 3GPP architecture described in the Open RAN Architecture (MTR 00 7 v 1.0.0) of the MW IF.
- FIG. 1 is a diagram illustrating a wireless area network architecture according to the first embodiment.
- 6 is an IP network that serves as a backbone for various devices in the radio area network (RAN), and 7a and 7b belong to the control plane (C0ntro1Piane), which controls cell resources.
- the radio control server (Cell Control RC S), 8a and 8b belong to the control plane (Control Plane), and control the movement by the mobile terminal (MS) unit and the wireless individual channel.
- Mobile terminal control Radio control superuser (Serving RCS) 9a and 9b belong to the bearer plane (Bearer Plane) and are shared by multiple mobile terminals (MS) 5 Cell control radio bearer handling the traffic of the cell (Cell Control RBS), 10a and 10b belong to the bearer plane (Bearer P 1 ane) and one mobile terminal (MS) 5 Shows the Ru Handoringusu the Torafukku dedicated channel mobile terminal control radio base alarm server (S e r v i n g RBS) with. Others are the same as in FIG.
- Cell control radio control server (Ce11 control RCS) 7a and 7b are nodes that control common resources tied to cells such as radio common channels, cell spreading codes, and power.
- Geocontrol server (Serving RCS) 8a, 8b are nodes that control each mobile terminal (MS) 5; mobile control of mobile terminal (MS) 5; Z position management; wireless individual channel control, etc. I do.
- Cell control radio bearer server (Cellcontrol RBS) 9a, 9b processes traffic flowing through the radio common channel according to the instructions of cell control radio control server (Ce11 control RCS) 7a, 7b
- the mobile terminal control radio bearer server (Serving RB S) 10a, 10b is a mobile terminal control radio control server (Servin RCS) 8a, 8b. Handle traffic flowing through the network.
- a plurality of mobile terminal control radio control servers (Serving RCS) 8 existing in a radio area network (RAN) are responsible for monitoring their own resource usage by a cell control radio control server (Ce11 control RCS) 7 Report periodically to.
- the resource usage status is composed of the CPU load, the number of controlling mobile terminals (MS), the number of used buffers, and the like.
- the cell control radio control server (Ce 11 control RCS) 7 can keep track of the load of a plurality of mobile terminal control radio control servers (Ser Ving RCS) 8. Can be.
- the mobile terminal (MS) 5 requests the allocation of a radio signaling resource to the radio area network (RAN) using a radio common channel, as in FIG. This request is notified to the cell control radio control server (Cellcontrol RCS) 7 which controls the cell / base station (No de B) terminating the common channel.
- Cell Control Radio Control Server (Cellcontrol RCS) 7 is a mobile control radio control server (Serving RC). S) Select the one with the most available resources from 8 and forward the request for radio signal resource allocation to this mobile terminal control radio control server (SerVing RCS) 8.
- the mobile terminal control radio control server (SerVing RCS) 8 determines the dedicated radio channel to be used by the mobile terminal (MS) for signaling transmission, and sets the cell control radio control server (Cel 1). Notify base station (No de B) 4 via contro 1 RC S) 7. In this negotiation, resources such as spreading codes and frequencies managed by the base station (No de B) 4 are allocated to the mobile terminal (MS) 5. When the securing of resources for the mobile terminal (MS) 5 of the base station (No deB) 4 is completed, the mobile terminal control radio control supervisor (Serving RC S) 8 moves this radio dedicated channel information. Notify the mobile terminal (MS) 5. This completes the assignment of the radio signaling resources.
- Subsequent requests for packet Z voice transmission by the mobile terminal (MS) 5 are processed between the mobile terminal (MS) 5 and the mobile terminal control radio control server (Serving RCS) 8, and the core network (CN).
- the cell control radio control server (Ce 11 control R CS) 7 does not participate in this processing at all.
- the mobile terminal control radio control server (Ser Ving RCS) 8 is a radio dedicated channel to the base station (No de B).
- the mobile terminal control radio bearer server (Serving RBS) 10a, 10b is controlled to set the bearer plane (Bearer Plane).
- the request for allocation of radio signaling resources from the mobile terminal (MS) shown in Fig. 12 is transmitted on the radio common channel.
- the cell control radio control server (Cell control 1 RCS) 7 receives the data, and the cell control radio control server (Ce 11 control RCS) 7 receives the mobile terminal (MS) to request the mobile terminal (MS) control. Transfer to the control radio control server (Serving R CS). Thereafter, the selected mobile terminal control radio control supervisor (Serving RCS) 7 basically controls the mobile terminal (MS) regardless of the movement of the mobile terminal (MS). However, the control for changing the assignment of the radio dedicated channel of the base station (No de B) 4 shown in FIG.
- Cell control RCS cell control radio control server
- the mobile terminal control radio control server (SerVing RCS) 8 selects one from a plurality of mobile terminal control radio bearer servers (Serving RBS) 10a and 10b, and Used for processing user traffic transmitted to and received from mobile terminal (MS) 5. Thereafter, the selected mobile terminal control radio bearer server (Serving RBS) 10a, 10b is basically selected regardless of the movement of the mobile terminal (MS) 5. ) Perform user traffic processing.
- each mobile terminal control radio control server (Serving RCS) 8 assumes that load distribution for mobile terminal (MS) control is performed by the mobile terminal control radio control server (Serving RCS) 8. 8) always reports its resource usage. Then, the cell control radio control server (Ce11 Control RCS) 7 determines the most suitable mobile terminal control radio control server (Serving RCS) 8 from this information when receiving the radio signaling resource allocation request, The mobile terminal control radio control server (SerVing RCS) 8 transmits a request to allocate a radio signaling resource to the mobile terminal control radio control server (Serving RCS) 8. Send.
- Embodiment 2 Embodiment 2.
- FIG. 3 shows an information flow according to the second embodiment.
- the mobile terminal control radio control server (SerVing RCS) 8 transmits the resources of the radio dedicated channel via the cell control radio control server (Ce11 control RCS) 7 to the base station (Node B). ), The mobile terminal control radio control server (Ser Ving R CS) 8 reports the resource usage status to the cell control radio control server (Ce 11 contro 1 RCS) 7 at any time. .
- the method of transmitting the request together with the request for changing the radio dedicated channel is also effective.
- the radio area network (RAN) is configured such that the mobile terminal control radio control server (Serving R CS) 8 to the cell control radio control server (Cel 1 contro 1 RCS) 7 Of the resource usage status of the mobile terminal control radio control server (SerVing RCS) 8 and the cell control radio control server (Ce11 control RCS) 7 This is done by piggybacking on the message of channel assignment / change control.
- the mobile terminal control radio control server (Serving R CS) 8 to the cell control radio control server (Cel 1 contro 1 RCS) 7 Of the resource usage status of the mobile terminal control radio control server (SerVing RCS) 8 and the cell control radio control server (Ce11 control RCS) 7
- Embodiment 3 Embodiment 3.
- the mobile terminal control radio control server (Ser Ving RCS) 8 controls the cell control radio control server (C e 1 1 control RCS) Limit the frequency of reporting resource usage status to 7 using a threshold.
- a threshold For example, in the mobile terminal control radio control server (Serving RCS) 8, a fixed maximum value X is set for the CPU load, the number of controlled mobile terminals (MS), and the number of buffers used, and Only when the threshold value X is continuously exceeded for y hours, the resource use status is reported to the cell control radio control server (Ce11 control RCS) 7.
- the method of reporting and using the resource usage is the same as in the first and second embodiments.
- each mobile terminal control radio control server (SerVing RCS) 8 transmits a cell control radio control server (Ce11 control). Notification of resource usage status to RCS 7 is performed only when the threshold exceeds a pre-configured threshold.
- FIG. 4 is a diagram illustrating a wireless area network architecture according to a fourth embodiment.
- 11 is a router with an IP multicast function that belongs to an IP network that serves as a backbone for various devices in a wireless area network (RAN).
- Figure 4 shows the conceptual flow of IP multicast in the figure.
- the mobile terminal control radio control server (SERVING RCS) 8 sends the resource usage status to a special multicast group.
- the IP multicast router receives the IP packet addressed to the multicast group and broadcasts it to the group member cell control radio control server (Ce11 control RCS) 7.
- the group member cell control radio control server (Ce11 control RCS) 7.
- each cell control radio control server (Ce 11 contro 1 RCS) 7 interacts with all mobile terminal control radio control servers (serving RCS) 8 connect.
- each mobile terminal control radio controller (Servicing RCS) 8 uses IP multicast communication to communicate the resource usage status to the all-cell control radio control server (Cell control RCS) 7. Report.
- Embodiment 5 Embodiment 5.
- FIG. 5 shows an information flow in the fifth embodiment.
- the cell control radio control server (Ce11 control RCS) 7 receives a request for allocating radio signaling resources and receives a TMSI (Temporary Mobile Subscriber Identity) included in the request. / P -TMS I (Packet -Temporary Mobile obi 1 e Subscriber I d entity) / " Using the ID as a key, select one mobile terminal control radio control server (Serving RCS) 8. If the load of this mobile terminal control radio control server (Serving RCS) 8 is high, the following The mobile terminal control radio control server (SerVing RCS) 8 can also be selected.) This selection method allows the wireless system from the same mobile terminal (MS) 5 to be selected.
- TMSI Temporal Mobile Subscriber Identity
- the request for allocating the signaling is basically transmitted to the same mobile terminal control radio control server (Serving RCS) 8.
- Requests for allocating wireless signaling resources and notification of wireless individual channel information are transmitted on a common channel, and thus are likely to be lost or delayed on the wireless. Therefore, in many cases, the mobile terminal (MS5) times out waiting for the notification of the radio dedicated channel information, and again transmits a radio signaling resource allocation request.
- This timeout period is set to a short time of 1 to 2 seconds in order to suppress transmission delay.
- Figure 5 shows this timeout sequence.
- the mobile terminal control radio control server (Serving RCS) 8 having received the retransmission message of the radio signaling resource allocation request determines whether or not the request is currently being processed based on the ID of the mobile terminal (MS) 5. Is determined, and if processing is in progress, retransmit the notification of wireless individual channel information without acquiring new wireless individual channel resources.
- the rule of selection of the mobile terminal control radio control server (Serving RCS) 8 according to the present embodiment is not used, the retransmission message of the radio signaling resource allocation request is different from the first mobile terminal.
- the data is transferred to the control radio control server (SerVing RCS) 8.
- the mobile terminal control radio control superuser (SerVing RCS) 8 that receives the transfer results in redundant acquisition of valuable radio dedicated channel resources. This duplicate resource is wasted during the time-out waiting for radio dedicated channel assignment completion.
- the cell control radio control server (Cell Control RCS) 7 when the cell control radio control server (Cell Control RCS) 7 receives the radio signal resource allocation request, the mobile terminal included in the request message (MS) ID for mobile terminal control radio
- the mobile terminal control radio control server (Serving RCS) 8 is determined, and if the load of the mobile terminal control radio control server (Ser Ving RCS) 8 is within an allowable range, the mobile terminal control radio control server (Serving RCS) 8 is determined.
- V i. Ng RCS) 8 to transmit a request for allocating radio signaling resources.
- the mobile terminal control radio control server (Serving RCS) 8 if the mobile terminal control radio control server (Serving RCS) 8 is already in the process of requesting the assignment of a radio signaling resource to the ID of the mobile terminal (MS) 5, the mobile terminal control radio control server The SerVing RCS 8 discards the request for allocating a new radio signaling resource to the mobile terminal (MS) 5.
- the mobile terminal control radio control server (Serving RCS) 8 discards the request for allocating a new radio signaling resource to the mobile terminal (MS) 5.
- the control of the radio area network differs depending on the service provided to the mobile terminal (MS). For example, in the case of voice communication, a dedicated channel is always used, and a mobile terminal (MS) can always communicate using multiple cells simultaneously (diparity state). On the other hand, in the case of packet communication, when traffic decreases, switching to the common channel occurs, and the state does not enter into the diversity communication state. In this way, the control load greatly depends on the service. For this reason, resource usage such as CPU load can be predicted from the number of controlled services.
- Figure 6 shows an example of calculating the total cost (resource usage status) in the mobile terminal control radio control superuser (Serving RCS).
- the mobile terminal control radio control server (Ser Ving RCS) 8 pre-stores the unit cost for each service type, and this unit cost and the mobile terminal (MS) that provides this service. By multiplying the number, the total cost of the mobile terminal control radio control server (Serving RCS) 8 itself can be calculated. Then, the mobile terminal control radio control server (Serving RCS) 8 reports this information to the cell control radio control server (Cellcontrol RCS) 7 as the resource use status.
- Cellcontrol RCS cell control radio control server
- the mobile terminal control radio control superuser (Serving R CS) 8 determines the number of mobile terminal (MS) controls per service unit and the known number. The total cost is calculated from the service processing cost, and this information is reported to the cell control radio control server (Cellcontro 1 RCS) 7 as the resource usage status.
- Cellcontro 1 RCS cell control radio control server
- the mobile terminal control radio control server (Serving RCS) 8 that supports dual call rescue (referred to as call rescue) as an example of the group of eight mobile terminal control radio control servers (Serving RCS), and the call rescue It is assumed that there are two types of mobile terminal control radio control server (SerVing RCS) 8 that does not support the service.
- the cell control radio control server (Ce11 control RCS) 7 has a subscriber user profile using the ID of the mobile terminal (MS) as a key. I remember whether or not a contract was made.
- the cell control radio control server (Ce1 1c0 ntro1 RCS) 7 receives a request for radio resource allocation from the mobile terminal (MS)
- the cell control radio control server (Cellcontrol RCS) 7 responds to the request. Read the subscriber's call rescue agreement from the set mobile terminal (MS) ID and rescue the call If it should, transfer the wireless signaling resource allocation request to the mobile terminal control radio control server (Serving RCS) 8 having this function.
- An operator having a cell control radio control server (Ce 11 control RCS) 7 allows the operator to share this device with another operator, and a mobile terminal control radio control server (Serving RCS) 8 owned by another operator 8 And a cell control radio control server (Cellcontrol RCS) 7 in some cases.
- the cell control radio control server (Cellcontrol RCS) 7 has a subscriber user profile using the ID of the mobile terminal (MS) 5 as a key, and the subscriber contracted as subscriber information. One evening remembers someone.
- the cell control radio control server (Cellcontrol RCS) 7 receives a request for allocation of radio signaling resources from the mobile terminal (MS), the cell control radio control server (Cellcontrol RCS) 7 is set in the request.
- the subscriber's operator contract content from the ID of the mobile terminal (MS) that is present, and request the mobile terminal control radio control server (SerVing RCS) 8 owned by the operator to allocate radio signaling resources. To transfer.
- each mobile terminal control radio control server (SerVing RCS) 8 has different functions such as redundant support.
- the cell control radio control server (Ce11 control RCS) 7 receives the request for allocating the radio signaling resource, the terminal included in the request message is received.
- the Cell Control Radio Control Server (Cellcontrol RCS) 7 is one of the Mobile Terminal Control Radio Control Servers (Serving RCS) that satisfies the quality of service contracted by the subscriber.
- FIG. 7 is a diagram showing a wireless area network architecture according to the ninth embodiment.
- FIG. 7 is a diagram in which a plurality of the distributed wireless area networks of FIG. 1 are connected via a core network 6, and it is assumed that a mobile terminal (MS) moves across a wireless area network area.
- MS mobile terminal
- FIG. 8 is a diagram showing an information flow in the ninth embodiment.
- this figure shows the information flow when a mobile terminal (MS) moves from an adjacent wireless area network area due to a handover.
- Cell control RC S Cell control of each wireless area network area Radio control server (Cell control RC S) 7
- the resource use status of the radio control server (Ser Ving RCS) 8 that controls all mobile terminals belonging to the wireless area network area to which it belongs It is assumed that you know.
- the mobile terminal (MS) 5 moves and the mobile terminal control radio control server (Serving RC S) 8 detects that the mobile terminal (MS) 5 has moved to the adjacent wireless area network area, the mobile terminal (MS) 5 moves.
- the terminal control radio control server (Serving RCS) 8 controls the mobile terminal (MS) 5 by controlling the mobile terminal control radio control server belonging to the moving area.
- (Serving RCS) Judge to transfer to 8.
- the current mobile terminal control radio control server (SerVing RCS) 8 is connected to the cell control radio control server (Cellcontro 1 RCS) 7 at the rear of the self-construction and a new mobile terminal control radio control server in the adjacent area.
- Cell control radio control server (Cell control RCS) 7 selects cell terminal radio control server (Serving RCS) 8 for cell control radio control server (Cellcontrol RCS) 7 belonging to the destination area.
- the request is returned to the current mobile terminal control radio control server (Serving RCS) 8.
- the current mobile terminal control radio control server (Serving RCS) 8 is designed to transfer control to the new mobile terminal control radio control server (Serving RCS) 8 specified by the obtained response.
- Control Radio Control Server (Serving RCS) 8 Send request for change. After that, 3GPP standard operation is performed.
- the new mobile terminal control radio control server (Serving RCS) 8 secures the dedicated radio channel resources and responds to the mobile terminal control radio control server (Serving RCS) 8 change to the current mobile station.
- the current mobile terminal control radio control server (SerVing RCS) 8 sends a radio resource switching request to the mobile terminal (MS), so that the mobile terminal (MS) can access its own radio.
- the mobile terminal (MS) 5 will be controlled by the new mobile terminal control radio control server (Serving RCS) 8.
- the current mobile terminal control radio control server (SerVing RCS) 8 requests a new mobile terminal control radio control server (Serving RCS) 8 of an adjacent area, the cell of the self-made rear is requested.
- the control radio control server (Cellcontrol RCS) 7 it is also possible to directly inquire the cell control radio control server (Cellcontrol RCS) 7 belonging to the area of the movement source.
- Mobile terminal (MS) 5 control.
- the base station (No de B) 4 or cell) accommodating the mobile terminal (MS) 5 currently controls the mobile terminal (MS) 5.
- Mobile terminal control radio control server (Ser Ving RCS) The mobile terminal control radio control server (Ser Ving RCS) that is currently controlling the movement of the mobile terminal (MS) 5 because it is not controlled by the ) 8 transfers control of the mobile terminal (MS) 5 to another mobile terminal control radio control server (Ser.Ving RCS) 8.
- the mobile terminal (MS) 5 delegates user traffic processing to another mobile terminal control radio bearer server (SerVing RBS) 10a, 10b.
- the cell control radio control server (Cellcontrol RCS) 7 in the local radio area network area is a cell control radio control server (Cellcontrol RCS) 7 installed in the adjacent low-power radio area network area. It has a mechanism to send and receive information to and from each other.
- Mobile terminal control radio control server (Serving RCS) 8 next to control of mobile terminal (MS) 5 If it is decided to transfer to one of the mobile terminal control radio control servers (SerVing RCS) 8 in the wireless area network area, the mobile terminal control radio control server (Serving) The RCS) 8 queries the available mobile terminal control radio control server (serving RCS) 8 to the cell control radio control server (Ce11 control RCS) 7 in the local wireless area network area.
- the cell control radio control server (Cell control RCS) 7 transfers this inquiry to the cell control radio control server (Cell control RCS) 7 in the adjacent local wireless area network area, and the cell control in the adjacent area is controlled.
- the radio control server (Cell rc 1 RCS) 7 determines the neighboring mobile terminal control radio control server (Serving RC S) 8 to be used based on the usage status of the resources that have been acquired. This result is returned to the requesting mobile terminal control radio control server (SerVing RCS) 8 via the cell control radio control server (Cell control RCS) 7 in the rear of the vehicle.
- the mobile terminal control radio control server (Serving RCS) 8 initiates a control transfer procedure to the acquired mobile terminal control radio control server (SerVing RCS) 8 in the adjacent area.
- Embodiment 10 Embodiment 10.
- FIG. 9 shows an information flow according to the tenth embodiment.
- a mobile terminal moves from an adjacent wireless area network area by an eight-hand handover.
- the core network CN
- the voice packet switch counts voice packet transmission requests from the mobile terminal control radio control server (Serving RCS) 8 and predicts the load on the mobile terminal control radio control server (Service RCS) 8.
- the current mobile terminal control radio control server (Service RCS) 8 transfers the control of the mobile terminal (MS) 5 to the mobile terminal control radio control server (SerVing RCS) 8 belonging to the destination area.
- the current mobile terminal control radio control server (Ser Ving RCS) 8 sends the mobile terminal control radio control server to the voice packet switch in the core network (CN).
- (Ser Ving RCS) 8 Send the change request.
- the new mobile terminal control radio control server (Serving RCS) 8 has not been identified yet.
- the voice packet exchange in the destination area predicts the load on the mobile terminal control radio control server (Serving RCS) 8 and selects one mobile terminal control radio control server (Ser Ving RCS) 8 Then, the request for changing the mobile terminal control radio control server (Servicing RCS) 8 is transferred to the selected mobile terminal controlling radio control server (Servicing RCS) 8. Thereafter, the operation is the same as in the ninth embodiment.
- the voice packet exchange in the core network predicted the load on the mobile terminal control radio control server (Ser Ving RCS) 8, but the voice / packet exchange did the mobile terminal control radio control.
- Control server (Serving RCS) 8 When receiving a request to change, transfer the mobile terminal control radio control server (Serving RCS) 8 to the cell control radio control server (Ce11 control RCS) 7 You may ask.
- the exchanges in the core network (CN) The request for the transmission of a tone is received from the serving base station controller (Serving RNC) 8, and the load is measured by counting the load on the connected mobile terminal control radio control server (Ser Ving RCS) 8. Having means.
- the mobile terminal (MS) 5 moves between the local wireless area network areas, and the mobile terminal control radio control sensor (Serving RCS) 8 controls the mobile terminal (MS) 5 to the adjacent local wireless area.
- the mobile terminal control radio control server (Serving RC S) 8 will The exchange in the core network (CN) of the local network—Requests delegation to the mobile terminal control radio control server (SerVing RCS) 8 via the core network (CN) exchange in the adjacent area.
- the core network (CN) exchange in the adjacent area sends the optimal mobile terminal control radio control server (S) based on the load information of all connected mobile terminal control radio control servers (Ser Ving RCS) 8.
- erVing RCS) 8 is determined, and a control delegation procedure is started for the mobile terminal control radio control server (SerVing RCS) 8.
- Embodiment 1 1.
- FIG. 10 is a diagram showing an information flow according to the eleventh embodiment.
- mobile terminal (MS) 5 uses a wireless common channel, and it is assumed that mobile terminal (MS) 5 moves up from the adjacent wireless area network area by moving mobile terminal (MS) 5. I do.
- the mobile terminal (MS) 5 camps on a new cell belonging to the adjacent wireless area network area, and notifies the network to that effect.
- the cell control radio control server (Cellcontrol RCS) 7 which controls this cell
- the cell control radio control server (Ce11 control RCS) 7 receives the optimum mobile terminal control radio control server (Serving).
- the mobile terminal control radio control server (SerVing RCS) 8 detects that the mobile terminal (MS) 5 is not under its own control, it controls the mobile terminal (MS) 5 with this request. To the mobile terminal control radio control server (SerVing RCS) 8 that is running. Upon receiving this message, the mobile terminal control radio control server (Serving RCS) 8 in the old area controls the mobile terminal (MS) and sends the message to the mobile terminal control radio control server (Serving RCS).
- the old mobile terminal control radio control server (Serving RCS) 8 is used to transfer control to the new mobile terminal control radio control server (SerVing RCS) 8, Server (Ser Ving RCS) 8 Sends a change request.
- the following is the operation of the 3GPP standard.
- the new mobile terminal control radio control server (Serving RCS) 8 sets the radio common resources to be used, and sends a response to the mobile terminal control radio control server (Serving RCS) 8 change. It returns to the current mobile terminal control radio controller (SerVing RCS) 8.
- the current mobile terminal control radio control server (Serving RC S) 8 commits control to the new mobile terminal control radio control server (Serving RCS) 8, and the new mobile terminal control radio control
- the server (Serving RCS) 8 sends a camping cell update response to the mobile terminal (MS) 5
- the new mobile terminal control radio control server (Serving RCS) 8 takes over the control.
- the present embodiment relates to control of a mobile terminal (MS) 5 when a mobile terminal (MS) 5 using a wireless common channel moves between local wireless area network areas.
- the cell control radio control supervisor (Cell control RCS) 7 of the adjacent area that controls the newly camped cell is used by the mobile terminal (MS) 5.
- the adjacent cell control radio control server (Cellcontrol RCS) 7 determines the adjacent mobile terminal control radio control server (Serving RCS) 8 to be used based on the obtained resource usage status, and issues a cell update request.
- the mobile terminal control radio control server (Serving RCS) 8 controls the mobile terminal (MS) 5 that currently controls the mobile terminal (MS) 5 based on the information of the cell update request.
- the mobile terminal control radio control server (Serving RCS) 8 forwards the cell update request to the mobile terminal control radio control server (Serving RCS) 8, and the adjacent area acquired by the mobile terminal control radio control server (Ser Ving RCS) 8 Of the mobile terminal control radio control server (Serving RC S) 8 of the control terminal.
- Cell Control RCS Cell Control radio control server
- Serving RCS optimal mobile terminal control radio control server
- the notification of the resource usage status from each mobile terminal control radio control server (Serving RCS) to the cell control radio control server (Ce11 control RCS) is assigned to the radio dedicated channel allocation Z change control By sharing this message, it is possible to reduce the traffic load of resource usage status notification.
- the notification of the resource usage status from each mobile terminal control radio control server (Serving RCS) to the cell control radio control server (Ce11 control RCS) is sent to a pre-configured threshold. By limiting only when the number exceeds the limit, the traffic load of the resource use status notification can be reduced.
- each mobile terminal control radio control server IP-casts the resource usage status to the all-cell control radio control server (Cellcontrol RCS), thereby enabling cell control.
- the transmission load of the usage status of the resources of the radio control server (Serving RCS) can be reduced.
- the cell control radio control server (Cellcontro 1 RCS) uses the mobile terminal (MS) ID included in the radio signaling resource allocation request message to identify the mobile terminal control radio control server (Serving).
- RCS mobile terminal control radio control server
- the mobile terminal control radio control server (RSC) Ser V in g RCS) suppresses useless radio resource acquisition due to retransmission of the radio signaling resource allocation request by discarding the new radio signaling resource allocation request to the mobile terminal (MS).
- the mobile terminal control radio control server calculates the total cost from the number of mobile terminal (MS) controls per service and the known service processing cost, and moves based on this information.
- the Serving RCS calculates the potential terminal load from the number of mobile terminal (MS) controls per service and the known service processing cost, and moves based on this information.
- the function of the mobile terminal control radio control server is differentiated, and the mobile terminal control radio control server (Serving RCS) is selected according to the subscriber's contract.
- the mobile terminal control radio control server is selected according to the subscriber's contract.
- the mobile terminal control radio control server (Serving RCS) is used in the adjacent local radio area network that can be used for the cell control radio control server (Ce11 control RCS) in the local radio area network.
- the mobile terminal control radio control server (Serving RCS) is queried, and the cell control radio control server (Ce11 control RCS) is informed of the cell control radio control server (Cellcontrol) in the adjacent one-car radio area network.
- RCS forwards the inquiry to the adjacent mobile terminal control radio control server (Serving RCS) based on the resource usage status obtained by the cell control radio control server (Cellcontrol RCS) in the adjacent area. Deciding to move between local wireless area networks In this case, the load on the mobile terminal control radio control server (Serving RCS) can be evenly distributed.
- the exchange in the core network (CN) recognizes the load of the mobile terminal control radio control server (Servin RCS) in the local wireless area network, and the core network (CN) in the adjacent area.
- the mobile terminal control radio control server (Serving RCS) can be used even when moving between the oral radio area networks. Load distribution can be performed evenly.
- the (adjacent) cell control radio control server (Ce11 control RCS) in the adjacent area where the mobile terminal (MS) controls the newly camped cell determines whether or not the usage status of the acquired resource is used.
- the mobile terminal (MS) moves between local wireless area networks using the wireless common channel by deciding which (adjacent) mobile terminal control radio control server (Serving RCS) to use.
- the load distribution of the mobile terminal control radio control server (Serving RCS) can be evenly distributed.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/487,231 US7369492B2 (en) | 2002-03-13 | 2002-03-13 | Radio area network control system and a wide area radio area network control system |
JP2003575658A JP3926798B2 (ja) | 2002-03-13 | 2002-03-13 | 無線エリアネットワーク制御システム及び広域無線エリアネットワーク制御システム |
EP20020705122 EP1484935B1 (en) | 2002-03-13 | 2002-03-13 | Radio area network control system and wide radio area network control system |
PCT/JP2002/002348 WO2003077587A1 (fr) | 2002-03-13 | 2002-03-13 | Systeme de gestion d'un reseau de zone radio et systeme de gestion d'un reseau de zone elargie |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2002/002348 WO2003077587A1 (fr) | 2002-03-13 | 2002-03-13 | Systeme de gestion d'un reseau de zone radio et systeme de gestion d'un reseau de zone elargie |
Publications (1)
Publication Number | Publication Date |
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WO2003077587A1 true WO2003077587A1 (fr) | 2003-09-18 |
Family
ID=27799921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2002/002348 WO2003077587A1 (fr) | 2002-03-13 | 2002-03-13 | Systeme de gestion d'un reseau de zone radio et systeme de gestion d'un reseau de zone elargie |
Country Status (4)
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US (1) | US7369492B2 (ja) |
EP (1) | EP1484935B1 (ja) |
JP (1) | JP3926798B2 (ja) |
WO (1) | WO2003077587A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
JP3926798B2 (ja) | 2007-06-06 |
EP1484935A4 (en) | 2007-01-17 |
EP1484935B1 (en) | 2011-05-11 |
EP1484935A1 (en) | 2004-12-08 |
JPWO2003077587A1 (ja) | 2005-07-07 |
US7369492B2 (en) | 2008-05-06 |
US20040235481A1 (en) | 2004-11-25 |
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