WO2013108320A1 - ページングエリア制御装置及び方法、転送装置、移動通信システム、移動局、並びにコンピュータ可読媒体 - Google Patents
ページングエリア制御装置及び方法、転送装置、移動通信システム、移動局、並びにコンピュータ可読媒体 Download PDFInfo
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- WO2013108320A1 WO2013108320A1 PCT/JP2012/007218 JP2012007218W WO2013108320A1 WO 2013108320 A1 WO2013108320 A1 WO 2013108320A1 JP 2012007218 W JP2012007218 W JP 2012007218W WO 2013108320 A1 WO2013108320 A1 WO 2013108320A1
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- downlink data
- paging area
- mobile station
- attribute
- paging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/06—User notification, e.g. alerting and paging, for incoming communication, change of service or the like using multi-step notification by changing the notification area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/08—User notification, e.g. alerting and paging, for incoming communication, change of service or the like using multi-step notification by increasing the notification area
Definitions
- the present invention relates to paging of a mobile station in a mobile communication system, and more particularly to determination of an area (hereinafter referred to as a paging area) where a paging signal is transmitted.
- a multiple access mobile communication system shares wireless resources including at least one of time, frequency, and transmission power among multiple mobile stations so that multiple mobile stations can perform wireless communication substantially simultaneously. It is possible to do.
- Typical multiple access schemes are TDMA (Time Division Multiple Access), FDMA (Frequency Division Multiple Access), CDMA (Code Division Multiple Access), OFDMA (Orthogonal Frequency Division Multiple Access), or a combination thereof.
- the term "mobile communication system” used in this specification means a multiple access mobile communication system unless otherwise specified.
- the mobile communication system includes a mobile station and an upper network.
- the upper network includes a base station, a relay node that relays traffic, and a control node that performs radio resource management / mobility management, bearer management, and the like.
- the host network transmits a paging signal to the mobile station when new downlink traffic (downlink data or voice incoming) arrives for the mobile station in the standby state.
- a mobile station in a standby state performs discontinuous reception (Discontinuous Reception (DRX)) in order to receive a paging signal.
- DRX discontinuous Reception
- the mobile station starts signaling for communication for receiving downlink traffic.
- This signaling includes a response message to paging.
- the response message includes a request for establishing a control connection, a service request for establishing a communication path (bearer) for transferring user data, or both.
- the network that has received the response message executes a procedure for setting a control connection and a communication path (bearer) necessary for transmitting downlink traffic to the mobile station.
- the host network needs to determine an area where a paging signal is transmitted when paging a mobile station.
- an area where a paging signal is transmitted is referred to as a “paging area”.
- the paging area includes at least one cell, and generally includes a plurality of cells (or sectors). Typically, the paging area matches the latest location registration area to which the mobile station belongs.
- the location registration area is a management unit in the upper network of a mobile station in a standby state. When the mobile station moves across the location registration area, the mobile station transmits a location update request to the upper network. Further, the mobile station may periodically transmit a location update request regardless of changes in the location registration area.
- a routing area For example, in a packet switching domain of 3GPP (3rd Generation Partnership Project) UMTS (Universal Mobile Telecommunications System), the location registration area is called a routing area (RA). Therefore, paging of a mobile station in a standby state (CELL_PCH state or URA_PCH state) is generally performed by broadcasting a paging signal to the entire routing area.
- 3GPP 3rd Generation Partnership Project
- URA_PCH state Universal Mobile Telecommunications System
- the location registration area is called a tracking area (TA). Therefore, paging of a mobile station in a standby state (RRC_IDLE (ECM_IDLE) state) is generally performed by broadcasting a paging signal to the entire routing area.
- RRC_IDLE ECM_IDLE
- Patent Documents 1 and 2 disclose a technique for further narrowing down the paging area as compared with a general location registration area by using the movement history of a mobile station. By narrowing down the paging area, the paging load of the mobile communication system can be reduced.
- Patent Document 1 calculates a moving distance (ie, moving speed) of a mobile station per unit time using a location update request history transmitted from the mobile station, and is included in a circle whose radius is the calculated moving distance. Is determined as a paging area.
- Patent Document 2 discloses that location management of a mobile station is performed using not only a location update request but also location information based on GPS (Global Positioning System). The method disclosed in Patent Document 2 is limited compared to the location registration area based on the GPS location information when the latest location information of the mobile station grasped by the host network is GPS location information. Including determining the paging area of the range.
- GPS Global Positioning System
- Patent Document 2 discloses that the moving speed of the mobile station is calculated using the position update message and the history of GPS position information, and the paging area is increased as the moving speed of the mobile station increases. Specifically, in order to enlarge the paging area, the identifier for specifying the paging area is changed in the order of a sector identifier, a radio control station (RNC: Radio Network Controller) identifier, and an RAI (Routing Network Area Indicator). .
- RNC Radio Network Controller
- JP 2011-49616 A JP 2006-2111335 A Japanese Patent Laying-Open No. 2005-20726
- the inventor of the present application has found that there is a possibility that an appropriate paging area cannot be determined according to downlink traffic by a known paging area determination method. This problem will be described below.
- paging load can be reduced by narrowing down the paging area.
- narrowing down the paging area increases the paging failure probability. Therefore, for example, for some downlink traffic (e.g. traffic with high urgency), it is assumed that it is preferable to perform reliable paging with reduced paging failure probability even at the expense of paging load.
- MTC Machine Type Communication
- MTC Machine Type Communication
- M2M network M2M network
- sensor e.g. environment, agriculture, traffic, etc. sensor
- the mobile characteristics greatly differ between a general mobile station (i.e. mobile communication terminal) owned by a person such as a mobile phone, a smartphone, and a tablet computer, and a mobile station used in MTC. Further, among MTCs, movement characteristics are greatly different between statically installed devices such as vending machines and gas meters and transport machines such as automobiles and railway vehicles. Further, it is assumed that the moving characteristics are different between the automobile and the railway vehicle in the transport machinery category.
- the movement characteristics include at least one of presence / absence of mobility, movement speed, movement direction, restriction on movement range, randomness of movement, and repeatability of movement. Therefore, if the downlink traffic content is associated with the mobile station type (eg MTC) or the mobile station mobility characteristics, the paging area can be appropriately determined by considering the downlink traffic content. There is a possibility that can be determined.
- Patent Documents 1 and 2 show that the size of the paging area is changed according to the moving speed of the mobile station, but does not describe taking into account the contents of downlink traffic.
- Patent Document 3 describes that a paging area of a mobile station is determined according to a communication state (e.g. communication amount) or an operation state (e.g. movement frequency) of the mobile station. Specifically, the mobility management node arranged in the core network of Patent Document 3 receives a control packet (paging request packet) transmitted from the mobile station, and the communication state or movement of the mobile station indicated by the control packet The paging area of the mobile station is determined according to the operation state of the station. However, Patent Document 3 also does not describe taking into account the content of downlink traffic addressed to a mobile station when determining a paging area.
- a communication state e.g. communication amount
- an operation state e.g. movement frequency
- the present invention has been made based on the knowledge of the inventors of the present application described above. That is, the present invention provides a paging area control device, a paging area control method, a transfer device, a mobile communication system, a mobile station, and a program capable of contributing to determination of an appropriate paging area according to downlink traffic. Objective.
- the first aspect of the present invention includes a paging area control device.
- the paging area control apparatus includes a PA determination unit that determines a paging area of the mobile station based on an attribute of downlink data addressed to the mobile station.
- the second aspect of the present invention includes a paging area control method.
- the method includes determining a paging area for the mobile station based on attributes of downlink data addressed to the mobile station.
- the third aspect of the present invention includes a transfer device.
- the transfer device includes a transfer unit and a control unit.
- the transfer unit receives downlink data addressed to a mobile station.
- the control unit transmits a notification including an attribute of the downlink data to a paging area control apparatus in order to request paging of the mobile station.
- the fourth aspect of the present invention includes a mobile communication system.
- the mobile communication system includes a transfer device, a paging area control device, and a paging device.
- the transfer apparatus receives downlink data addressed to a mobile station.
- the paging area control apparatus determines a paging area of the mobile station based on an attribute of the downlink data.
- the paging device transmits a paging signal to the paging area in order to page the mobile station.
- a fifth aspect of the present invention includes a mobile station that is used in the mobile communication system according to the fourth aspect of the present invention described above and configured to start communication in response to the paging signal.
- the sixth aspect of the present invention includes a program for causing a computer to perform the method according to the second aspect of the present invention described above.
- a paging area control device a paging area control method, a transfer device, a mobile communication system, a mobile station, which can contribute to determination of an appropriate paging area according to downlink traffic, And can provide programs.
- Embodiment 1 of this invention It is a sequence diagram which shows an example of the paging procedure in Embodiment 1 of this invention. It is a figure which shows the structural example of the mobile communication system which concerns on Embodiment 2 of this invention. It is a figure which shows an example of the information which the subscriber server which concerns on Embodiment 2 of this invention hold
- the check item Downlink data attribute which should be considered in the case of PA determination
- FIG. 1 is a block diagram showing a configuration example of a mobile communication system 1 according to the present embodiment.
- the mobile communication system 1 includes a mobile station 100, a plurality of base stations 200, and an upper network 30.
- the mobile communication system 1 includes a mobile station 100, a plurality of base stations 200, and an upper network 30.
- the system 1 may include a plurality of mobile stations 100.
- Each base station 200 generates a cell 210, connects to the mobile station 100 by radio access technology, and relays user data between the mobile station 100 and the upper network 30.
- the upper network 30 is communicably connected to a plurality of base stations 200 and has a function of relaying user data transferred between the mobile station 100 and the external network 9. Further, the upper network 30 performs management of subscriber information related to the mobile station 100 and mobility management (mobility management). Here, the mobility management includes location management of the mobile station 100 and paging control for the mobile station 100 in a standby state.
- the host network 30 is a network managed mainly by a mobile operator that provides mobile communication services.
- the upper network 30 includes a core network (e.g. LTE EPC (Evolved Packet Core), UMTS packet core). Further, the upper network 30 may include a node (e.g. RNC) of the radio access network excluding the plurality of base stations 200.
- a core network e.g. LTE EPC (Evolved Packet Core), UMTS packet core
- the upper network 30 may include a node (e.g. RNC) of the radio access network excluding the plurality of base stations
- the upper network 30 includes a mobility management node 300 and a forwarding node 310.
- the transfer node 310 is a user plane node, and performs user data transfer processing (e.g. routing and forwarding).
- the forwarding node 310 may include a plurality of forwarding nodes.
- the forwarding node 310 includes a user plane function of SGSN (Serving GPRS Support ⁇ ⁇ ⁇ ⁇ Node) and a user plane function of GGSN (Gateway GPRS Support Node).
- the forwarding node 310 includes S-GW (Serving Gateway) and P-GW (Packet Data Network Gateway).
- the mobility management node 300 is a control plane node and performs mobility management including paging control of the mobile station 100.
- the mobility management node 300 includes an SGSN control plane function.
- the mobility management node 300 includes MME (Mobility Management Entity).
- the mobility management node 300 performs the following processing regarding paging control of the mobile station 100. That is, the mobility management node 300 determines the paging area (PA) of the mobile station 100 based on the attribute of the downlink data (DD) addressed to the mobile station 100. Then, when the downlink data to be transmitted to the mobile station 100 in the standby state arrives at the higher level network 30, the mobility management node 300 at least one base station included in the determined PA among the plurality of base stations 200 Is instructed to transmit a paging signal. Receiving the paging instruction from the mobility management node 300, the base station 200 transmits a paging signal using the downlink channel. In UMTS, the RNC transmits a paging signal via the base station 200. Therefore, the mobility management node 300 may request the RNC to transmit a paging signal. In addition, when paging fails, the mobility management node 300 may repeatedly perform paging while changing the paging area.
- the mobility management node 300 may repeatedly perform paging while changing the
- the mobility management node 300 may change the paging area (PA) determination algorithm according to the downlink data attribute. Specifically, the mobility management node 300 may specify an algorithm used for determining the PA of the mobile station 100 from among a plurality of PA determination algorithms according to the downlink data attribute addressed to the mobile station 100. Then, the mobility management node 300 may determine the PA of the mobile station 100 using the specified PA determination algorithm. That is, by changing the PA determination algorithm based on the downlink data attribute, a paging area corresponding to the downlink data attribute is finally determined.
- PA paging area
- DD downlink data
- the mobility management node 300 may consider a downlink data attribute having relevance with the urgency or delay tolerance of the downlink data. For example, when arrival of highly urgent downlink data, the mobility management node 300 may determine a sufficiently large paging area in order to reduce the paging failure probability. On the other hand, when the downlink data having a large delay tolerance arrives, the mobility management node 300 is relatively allowed a delay due to paging failure, and therefore, it may be considered to determine a small paging area.
- the mobility management node 300 may consider a downlink data attribute having relevance with the mobility characteristics of the mobile station 100.
- the movement characteristics of the mobile station 100 include, for example, at least one of presence / absence of mobility of the mobile station 100, movement speed, movement direction, restriction on a movement range, movement randomness, and movement repeatability.
- the mobility management node 300 may determine a paging area corresponding to the mobility characteristics of the mobile station 100.
- the presence / absence of mobility means whether the mobile station 100 has substantial mobility. For example, when the mobile station 100 is mounted on a statically installed device such as a vending machine or a gas meter, the mobile station 100 does not have substantial mobility.
- the mobility management node 300 determines that the mobile station 100 has the closest position (eg, the base station 200 to which the mobile station 100 belongs, the mobile station 100 to which the mobile station 100 belongs. Only one cell including the cell 210 or the GPS position) may be determined as the PA.
- the restriction on the movement range means that there is some restriction on the geographical range in which the mobile station 100 is substantially movable.
- the geographical range in which the mobile station 100 is substantially movable is restricted to a one-dimensional area along the railroad track.
- the movement management node 300 may determine the PA as follows. That is, the mobility management node 300 identifies a geographical area that is highly dependent on the moving direction of the mobile station 100, and the base station 200 included in the geographical area or the cell 210 that at least partially overlaps the geographical area. May be selected as PA.
- the randomness of movement means that the moving direction of the mobile station 100 is an irregular direction regardless of the past movement history, in other words, the moving locus of the mobile station 100 has no substantial regularity.
- the repeatability of movement is a concept opposite to the randomness of movement, and means that some regularity can be found in the movement direction or movement locus of the mobile station 100.
- the mobility management node 300 may determine the PA as follows. That is, the mobility management node 300 specifies a geographical area whose dependence on the moving direction of the mobile station 100 is small and whose size is variable, and the base station 200 or the geographical area included in the geographical area. And selecting a cell 210 that at least partially overlaps as a PA.
- the geographical area with small movement direction dependency is, for example, a circular area.
- the size of the geographical area may be determined according to the moving speed of the mobile station 100.
- the mobility management node 300 may use the PA determination method described in Patent Document 1 or 2.
- the downlink data attribute considered for PA determination may include at least one of a data type, a protocol type, a port number, transmission source identification information, and a data size.
- the data type includes, for example, emergency bulletin, voice, mail, video, http (Hypertext Transfer Protocol) data, SMS (Short Message Service), and the like. These data types are related to the urgency or delay tolerance of downlink data.
- Urgent bulletin e.g. earthquake bulletin
- the mobility management node 300 may determine a sufficiently large paging area including the current location registration area (eg routing area (RA), tracking area (TA)) of the mobile station 100. .
- RA routing area
- TA tracking area
- the mobility management node 300 may determine the current location registration area of the mobile station 100 and the location registration area adjacent thereto as paging areas.
- the mobility management node 300 determines, as a paging area, the base station 200 or the cell 210 included within a predetermined distance from the center of the location registration area among the current location registration areas of the mobile station 100. May be.
- the mobility management node 300 may estimate the movement range of the mobile station using the movement history of the mobile station 100 and determine the movement range as a paging area.
- the mobility management node 300 may determine only the cell 210 to which the mobile station 100 is last connected as the paging area.
- Protocol type and port number are specific examples of attributes that can be used to specify the data type.
- the protocol type corresponds to a protocol number assigned to the IP (Internet protocol) packet.
- the port number corresponds to a TCP (Transmission Control Protocol) port number.
- the transmission source identification information is information for identifying the transmission source of the downlink data.
- the transmission source identification information corresponds to the source IP address.
- specific source identification information such as a source IP address, subnet, or domain may be registered in advance.
- the mobility management node 300 may determine the paging area corresponding to the identification information when the transmission source of the downlink data matches the registered identification information.
- transmission source identification information related to MTC for example, an IP address, subnet, or domain corresponding to a vending machine / sensor monitoring system may be registered in advance.
- the mobility management node 300 should just make only the cell 210 which the mobile station 100 connected last as a paging area. This is because the mobile station 100 mounted on the vending machine or sensor is considered to have substantially no mobility.
- the data size is the size (data amount) of the entire downlink data or a part thereof (for example, the payload part excluding the header).
- the mobility management node 300 may change the size of the paging area of the mobile station 100 according to the data size of the downlink data of the mobile station 100.
- the data size of the downlink data is large, maintaining this data for a long time may increase the load on the network. Therefore, for example, when the data size of the downlink data of the mobile station 100 is large, the mobility management node 300 may enlarge the paging area of the mobile station 100 in order to increase the paging success rate.
- the mobility management node 300 may reduce the paging area of the mobile station 100. In other words, the mobility management node 300 may make the paging area of the mobile station 100 relatively larger as the data size of the downlink data of the mobile station 100 is larger. Note that, as described above, the mobility management node 300 may change the paging area determination algorithm according to the downlink data size in order to change the size of the paging area according to the data size of the downlink data.
- FIG. 1 shows an example in which a PA is specified from one location registration area (e.g. routing area (RA), tracking area (TA)) to which the mobile station 100 belongs. That is, at least one base station 200 (or at least one of the plurality of base stations 200 (or the plurality of cells 210) included in the location registration area to which the mobile station 100 in the standby state belongs is configured to transmit a paging signal. Cell 210) is selected as the PA.
- RA routing area
- TA tracking area
- the mobility management node 300 may select at least one TA that transmits a paging signal from among a plurality of TAs to which the mobile station 100 belongs, as a PA, according to a PA determination algorithm applied to the mobile station 100.
- the mobility management node 300 may determine the PA without depending on the location registration area to which the mobile station 100 in the standby state belongs.
- the mobility management node 300 may be able to grasp the immediate location of the mobile station 100 in the standby state in more detail than the location registration area.
- the mobility management node 300 can receive a location update request (e.g. LTE TAU (Tracking Area Update) request, UMTS RAU (Routing Area Update) request) periodically transmitted from the mobile station 100.
- a location update request e.g. LTE TAU (Tracking Area Update) request, UMTS RAU (Routing Area Update) request
- the mobility management node 300 can grasp the latest position of the mobile station 100 in units of the base station 200 (or cell 210) that has received the position update request.
- the mobility management node 300 may be able to use location information of the mobile station 100 by GPS.
- the mobility management node 300 determines a geographical area including the most recent position of the mobile station 100 (eg base station 200, cell 210, GPS position) by the PA determination algorithm, At least one included base station 200 or cell 210 may be selected as the PA.
- the mobile station 100 eg base station 200, cell 210, GPS position
- FIG. 2 is a block diagram illustrating a configuration example of the mobility management node 300.
- FIG. 2 shows elements relating to paging control among the functions of the mobility management node 300.
- the configuration example in FIG. 2 includes a paging area (PA) control unit 301 and a paging instruction unit 303.
- the PA control unit 301 includes a PA determination unit 302.
- the PA determination unit 302 receives a downlink data (DD) notification from the transfer node 310 that has received the downlink data addressed to the mobile station 100 in the standby state. Then, PA determining section 302 determines the PA of mobile station 100 using the downlink data (DD) attribute included in the downlink data (DD) notification.
- DD downlink data
- DD downlink data
- the paging instruction unit 303 transmits a paging instruction to the base station 200 included in the PA determined by the PA determination unit 302 (or a radio access network control device such as an RNC).
- the paging instruction includes a mobile station identifier (hereinafter referred to as MSID) for specifying the mobile station 100 to be paged.
- MSID mobile station identifier
- the MSID included in the paging instruction is, for example, TMSI (Temporary Mobile Subscriber Identity), P-TMSI (Packet TMSI), M-TMSI (MME-TMSI), GUTI (Globally Unique Temporary ID), or IMSI (International Mobile Subscriber Identity). ).
- FIG. 3 is a block diagram illustrating a configuration example of the forwarding node 310.
- FIG. 3 shows elements related to paging control among the functions of the forwarding node 310.
- the transfer unit 311 receives downlink data addressed to the mobile station 100 from the external network 9 or another transfer node.
- the transfer unit 311 transfers downlink data addressed to the mobile station 100 to the base station 200 (or a radio access network control device such as an RNC) to which the mobile station 100 is connected.
- the transfer unit 311 supplies the attribute of the downlink data to the notification unit 312.
- the notification unit 312 transmits to the mobility management node 300 a notification (downlink data notification) indicating that the downlink data addressed to the mobile station 100 in the standby state has arrived.
- the downlink data notification includes a downlink data attribute.
- FIG. 4 is a flowchart showing an example of a paging area (PA) determination procedure by the mobility management node 300.
- the mobility management node 300 receives a downlink data notification indicating that downlink data addressed to the mobile station 100 has arrived from the forwarding node 310.
- the downlink data notification includes a downlink data attribute.
- the paging area (PA) of the mobile station 100 is determined based on the mobility management node 300 and the downlink data attribute.
- the determination of the paging area based on the downlink data attribute in step S12 of FIG. 4 may be performed by specifying the PA determination algorithm corresponding to the downlink data attribute as described above.
- FIG. 5 is a flowchart showing such a modification.
- the mobility management node 300 specifies a PA determination algorithm corresponding to the downlink data attribute.
- the mobility management node 300 determines the paging area of the mobile station 100 using the specified algorithm.
- FIG. 6 is a flowchart showing an example of a downlink data notification procedure by the forwarding node 310.
- the forwarding node 310 receives downlink data addressed to the mobile station 100 in a standby state.
- the forwarding node 310 acquires a downlink data attribute from the received downlink data.
- the forwarding node 310 transmits a downlink data notification including the downlink data attribute to the mobility management node 300.
- FIG. 7 is a sequence diagram showing an example of a paging procedure in the present embodiment. Steps S31, S32, S33, and S34 in FIG. 7 correspond to steps S21, S22, S23, and S12 described above, respectively.
- step S35 the mobility management node 300 transmits a response indicating that the downlink data notification has been received to the forwarding node 310.
- step S36 the mobility management node 300 transmits a paging instruction to the base station 200 included in the PA of the mobile station 100 in response to the downstream traffic to the mobile station 100 in the standby state arriving at the upper network 30. To do.
- the base station 200 transmits a paging signal in the cell 210 based on the paging instruction.
- this embodiment determines a paging area of the mobile station 100 by introducing a new index called downlink data attribute. Therefore, the present embodiment can contribute to the determination of an appropriate paging area according to downlink traffic.
- the urgency and delay tolerance of downlink data vary.
- MTC Machine Type Communication
- the present embodiment uses the correspondence relationship between the urgency / delay tolerance of the downlink data and the downlink data attribute, or the correspondence relationship between the mobile characteristic of the mobile station 100 and the downlink data attribute, thereby reducing the downlink. It is also possible to contribute to the determination of an appropriate paging area according to the urgency / delay tolerance of data or the mobility characteristics of the mobile station.
- FIG. 8 is a block diagram showing a configuration example of the mobile communication system 2 according to the present embodiment.
- the upper network 30 in FIG. 2 includes a subscriber server 320.
- the subscriber server 320 is a device that holds subscriber information of the mobile station 100, and corresponds to, for example, an HSS (Home Subscriber Server) or an HLR (Home Location Server).
- the subscriber information held by the subscriber server 320 according to the present embodiment includes “downlink data attribute to be considered when determining PA”.
- the mobility management node 300 according to the present embodiment is based on “downlink data attributes to be considered when determining PA” held in the subscriber server 320 when downlink data addressed to the mobile station 100 arrives. Determine the paging area. That is, the mobility management node 300 according to the present embodiment can change the downlink data attribute to be considered for determining the paging area for each mobile station 100.
- the mobility management node 300 selects an attribute to be referred to in paging area (PA) determination among a plurality of attributes (eg, data type, transmission source identification information, data size) regarding downlink data.
- PA paging area
- An inquiry is transmitted to the subscriber server 320.
- the mobility management node 300 selects an attribute to be referred to in PA determination from among a plurality of attributes regarding downlink data.
- FIG. 9 shows a specific example of “downlink data attributes to be considered when determining a PA” held in the subscriber server 320.
- the “check item” in FIG. 9 corresponds to this.
- the subscriber server 320 may hold a check item for each of the plurality of mobile stations 100 in association with a mobile station identifier (MSID).
- MSID is sometimes called a subscriber identifier.
- the MSID is, for example, IMSI.
- the protocol type is used as “downlink data attribute to be considered when determining PA”.
- the timing at which the mobility management node 300 acquires the check item (downlink data attribute to be considered when determining the PA) regarding the mobile station 100 is not particularly limited.
- the mobility management node 300 may transmit a check item request to the subscriber server 320 in the process of attaching or updating the location of the mobile station 100.
- the check item request may also be used as a location update request (e.g. TAU request, RAU request).
- the mobility management node 300 transmits a request for a check item (downlink data attribute to be considered when determining the PA) to the subscriber server 320. May be.
- the mobility management node 300 may notify the transfer node 310 of the downlink data attribute tail necessary for the mobile station 100.
- the forwarding node 310 may include only the downlink data attribute specified by the mobility management node 300 in the downlink data notification. Thereby, the data size reduction of downlink data notification can be expected.
- the sequence diagram of FIG. 10 shows an example of a procedure for registering check items (downlink data attributes to be considered when determining a PA) in the transfer node 310.
- the mobility management node 300 transmits a check item request to the subscriber server 320.
- the check item request includes the MSID of the mobile station 100 (however, the ID managed by the subscriber server 320, for example, IMSI).
- the request transmitted in step S41 is, for example, a location update request (e.g. TAU request, RAU request).
- step S42 the mobility management node 300 receives from the subscriber server 320 a check item (downlink data attribute to be considered when determining the PA) regarding the mobile station 100.
- step S ⁇ b> 43 the mobility management node 300 transmits check items related to the mobile station 100 to the transfer node 310.
- the transfer node 310 may transmit a downlink data notification including the attribute specified by the check item to the mobility management node 300 when the downlink data addressed to the mobile station 100 arrives.
- the determination of the paging area based on the downlink data attribute described in the first and second embodiments of the invention, that is, the function of the PA control unit 301 shown in FIG. 2, is the mobility management node 300 (that is, in FIG. It may be arranged separately from the instruction unit 303).
- the arrangement of the functions may be determined as appropriate according to the architecture and communication standard of the mobile communication system.
- the processing performed by the mobility management node 300 and the transfer node 310 described in the first and second embodiments may be realized by using a semiconductor processing apparatus including an ASIC (Application Specific Specific Integrated Circuit). These processes may be realized by causing a computer such as a microprocessor or a DSP (Digital Signal Processor) to execute a program. Specifically, one or a plurality of programs including a group of instructions for causing a computer to execute the algorithm described with reference to the flowcharts and sequence diagrams may be created, and the programs may be supplied to the computer.
- ASIC Application Specific Specific Integrated Circuit
- Non-transitory computer readable media include various types of tangible storage media (tangible storage medium). Examples of non-transitory computer-readable media include magnetic recording media (eg flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg magneto-optical discs), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable ROM), flash ROM, RAM (random access memory)) are included.
- the program may also be supplied to the computer by various types of temporary computer-readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves.
- the temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
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Abstract
Description
図1は、本実施の形態に係る移動通信システム1の構成例を示すブロック図である。移動通信システム1は、移動局100、複数の基地局200、及び上位ネットワーク30を含む。なお、図1では、説明の便宜のために1つの移動局100のみを示しているが、システム1は複数の移動局100を含んでもよい。各基地局200は、セル210を生成し、無線アクセス技術により移動局100と接続し、移動局100と上位ネットワーク30との間でユーザーデータを中継する。
本実施の形態では、上述した発明の実施の形態1の変形例について説明する。図8は、本実施の形態に係る移動通信システム2の構成例を示すブロック図である。図2の上位ネットワーク30は、加入者サーバ320を含む。
発明の実施の形態1及び2において説明したダウンリンクデータ属性に基づくページングエリアの決定、つまり図2に示したPA制御部301の機能は、ページング指示を行う移動管理ノード300(つまり、図2の指示部303)から分離して配置されてもよい。当該機能の配置は、移動通信システムのアーキテクチャおよび通信規格等に従って適宜決定されればよい。
9 外部ネットワーク
30 コアネットワーク
100 移動局
200 基地局
210 セル
300 移動管理ノード
301 ページングエリア(PA)制御部
302 ページングエリア(PA)決定部
303 ページング指示部
310 転送ノード
311 転送部
312 通知部
320 加入者サーバ
Claims (50)
- 移動局宛てのダウンリンクデータの属性に基づいて前記移動局のページングエリアを決定する決定手段を備える、
ページングエリア制御装置。 - 前記ダウンリンクデータの属性は、前記ダウンリンクデータの宛先としての前記移動局の識別子のみである場合を除く、請求項1に記載のページングエリア制御装置。
- 前記ページングエリアの決定は、前記ページングエリアの決定に使用されるページングエリア決定アルゴリズムを前記ダウンリンクデータの属性に基づいて変更することを含む、請求項1又は2に記載の制御装置。
- 前記決定手段は、複数のページングエリア決定アルゴリズムの中から前記ダウンリンクデータの属性に対応したアルゴリズムを特定し、特定されたアルゴリズムを用いて前記ページングエリアを決定する、請求項1~3のいずれか1項に記載の制御装置。
- 前記ダウンリンクデータの属性は、データ種別を含む、請求項1~3のいずれか1項に記載の制御装置。
- 前記ダウンリンクデータの属性は、プロトコル種別及びポート番号のうち少なくとも1つを含む、請求項1~5のいずれか1項に記載の制御装置。
- 前記ダウンリンクデータの属性は、送信元識別情報を含む、請求項1~6のいずれか1項に記載の制御装置。
- 前記ダウンリンクデータの属性は、前記ダウンリンクデータのデータサイズを含む、請求項1~7のいずれか1項に記載の制御装置。
- 前記決定手段は、前記データサイズが大きいほど前記ページングエリアを相対的に大きくする、請求項8に記載の制御装置。
- 前記決定手段は、前記ダウンリンクデータを受信した転送ノードから前記ダウンリンクデータの属性を含む通知を受信する、請求項1~9のいずれか1項に記載の制御装置。
- 前記決定手段は、前記通知を受信したことを契機として、前記ページングエリアの決定を行う、請求項10に記載の制御装置。
- 前記決定手段は、前記移動局に応じて、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を変更する、請求項1~11のいずれか1項に記載の制御装置。
- 前記決定手段は、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を選択するために、加入者サーバに対して問い合わせを送信する、請求項1~12のいずれか1項に記載の制御装置。
- 前記決定手段は、加入者サーバから受信した前記移動局に関する登録情報に基づいて、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を選択する、請求項1~13のいずれか1項に記載の制御装置。
- 前記決定手段は、前記移動局が属する位置登録エリアの中から前記ページングエリアを決定する、請求項1~14のいずれか1項に記載の制御装置。
- 前記ページングエリアの決定は、前記位置登録エリアに含まれる基地局群又はセル群の中から、少なくとも1つの基地局又はセルを前記ページングエリアとして選択することにより行われる、請求項15に記載の制御装置。
- 移動局宛てのダウンリンクデータの属性に基づいて前記移動局のページングエリアを決定すること、
を備える、ページングエリア制御方法。 - 前記ダウンリンクデータの属性は、前記ダウンリンクデータの宛先としての前記移動局の識別子のみである場合を除く、請求項17に記載の方法。
- 前記決定することは、前記ページングエリアの決定に使用されるページングエリア決定アルゴリズムを前記ダウンリンクデータの属性に基づいて変更することを含む、請求項17又は18に記載の方法。
- 前記決定することは、
複数のページングエリア決定アルゴリズムの中から前記ダウンリンクデータの属性に対応したアルゴリズムを特定すること、及び
特定されたアルゴリズムを用いて前記ページングエリアを決定すること、
を含む、請求項17~19のいずれか1項に記載の方法。 - 前記ダウンリンクデータの属性は、データ種別を含む、請求項17~20のいずれか1項に記載の方法。
- 前記ダウンリンクデータの属性は、プロトコル種別及びポート番号のうち少なくとも1つを含む、請求項17~21のいずれか1項に記載の方法。
- 前記ダウンリンクデータの属性は、送信元識別情報を含む、請求項17~22のいずれか1項に記載の方法。
- 前記ダウンリンクデータの属性は、データサイズを含む、請求項17~23のいずれか1項に記載の方法。
- 前記決定することは、前記データサイズが大きいほど前記ページングエリアを相対的に大きくすることを含む、請求項24に記載の方法。
- 前記ダウンリンクデータを受信した転送ノードから前記ダウンリンクデータの属性を含む通知を受信することをさらに備える、請求項17~25のいずれか1項に記載の方法。
- 前記決定することは、前記通知を受信したことを契機として、前記ページングエリアを決定することを含む、請求項26に記載の方法。
- 前記移動局に応じて、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を変更することをさらに備える、請求項17~27のいずれか1項に記載の方法。
- 前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を選択するために、加入者サーバに対して問い合わせを送信することをさらに備える、請求項17~28のいずれか1項に記載の方法。
- 加入者サーバから受信した前記移動局に関する登録情報に基づいて、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を選択することをさらに備える、請求項17~29のいずれか1項に記載の方法。
- 前記決定することは、前記移動局が属する位置登録エリアの中から前記ページングエリアを決定することを含む、請求項17~30のいずれか1項に記載の方法。
- 前記ページングエリアの決定は、前記位置登録エリアに含まれる基地局群又はセル群の中から、少なくとも1つの基地局又はセルを前記ページングエリアとして選択することにより行われる、請求項31に記載の方法。
- 移動局宛てのダウンリンクデータを受信する転送手段と、
前記移動局のページングを要求するために、前記ダウンリンクデータの属性を含む通知をページングエリア制御装置に対して送信する送信手段と、
を備える転送装置。 - 前記ダウンリンクデータの属性は、前記ダウンリンクデータの宛先としての前記移動局の識別子のみである場合を除く、請求項33に記載の転送装置。
- 前記ダウンリンクデータの属性は、データ種別を含む、請求項33又は34に記載の転送装置。
- 前記ダウンリンクデータの属性は、プロトコル種別及びポート番号のうち少なくとも1つを含む、請求項33~35のいずれか1項に記載の転送装置。
- 前記ダウンリンクデータの属性は、送信元識別情報を含む、請求項33~36のいずれか1項に記載の転送装置。
- 前記ダウンリンクデータの属性は、データサイズを含む、請求項33~37のいずれか1項に記載の転送装置。
- 移動局宛てのダウンリンクデータを受信する転送手段と、
前記ダウンリンクデータの属性に基づいて前記移動局のページングエリアを決定するページングエリア制御手段と、
前記移動局をページングするために、前記ページングエリアに対してページング信号を送信するページング手段と、
を備える移動通信システム。 - 前記ダウンリンクデータの属性は、前記ダウンリンクデータの宛先としての前記移動局の識別子のみである場合を除く、請求項39に記載のシステム。
- 前記ページングエリアの決定は、前記ページングエリアの決定に使用されるページングエリア決定アルゴリズムを前記ダウンリンクデータの属性に基づいて変更することを含む、請求項39又は40に記載のシステム。
- 前記ページングエリア制御手段は、複数のページングエリア決定アルゴリズムの中から前記ダウンリンクデータの属性に対応したアルゴリズムを特定し、特定されたアルゴリズムを用いて前記ページングエリアを決定する、請求項39~41のいずれか1項に記載のシステム。
- 前記転送手段は、前記移動局のページングを要求するために、前記ダウンリンクデータの属性を含む通知を前記ページングエリア制御手段に対して送信する、請求項39~42のいずれか1項に記載のシステム。
- 前記ページングエリア制御手段は、前記通知を受信したことを契機として、前記ページングエリアの決定を行う、請求項43に記載のシステム。
- 前記ダウンリンクデータの属性は、データ種別、プロトコル種別、ポート番号、送信元識別情報、及びデータサイズのうち少なくとも1つを含む、請求項39~44のいずれか1項に記載のシステム。
- 前記ページングエリア制御手段は、前記移動局に応じて、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を変更する、請求項39~45のいずれか1項に記載のシステム。
- 前記ページングエリア制御手段は、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を選択するために、加入者サーバに対して問い合わせを送信する、請求項39~46のいずれか1項に記載のシステム。
- 前記ページングエリア制御手段は、加入者サーバから受信した前記移動局に関する登録情報に基づいて、前記ダウンリンクデータに関する複数の属性のうち前記ページングエリアの決定において参照する属性を選択する、請求項39~47のいずれか1項に記載のシステム。
- 請求項39~48のいずれか1項に記載の移動通信システムと結合して使用され、前記ページング信号に応答して通信を開始するよう構成された移動局。
- ページングエリア制御方法をコンピュータに行わせるためのプログラムが格納された非一時的なコンピュータ可読媒体であって、
前記方法は、移動局宛てのダウンリンクデータの属性に基づいて前記移動局のページングエリアを決定することを含む、
コンピュータ可読媒体。
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- 2012-11-09 JP JP2013554090A patent/JP6256005B2/ja active Active
- 2012-11-09 US US14/372,312 patent/US9661607B2/en active Active
- 2012-11-09 WO PCT/JP2012/007218 patent/WO2013108320A1/ja active Application Filing
- 2012-11-09 EP EP12865868.9A patent/EP2814295A4/en not_active Withdrawn
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CN106304336A (zh) * | 2015-05-15 | 2017-01-04 | 北京三星通信技术研究有限公司 | 支持寻呼优化的方法及设备 |
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JP2018174377A (ja) * | 2017-03-31 | 2018-11-08 | シャープ株式会社 | 端末装置、基地局装置、コアネットワーク、および通信方法 |
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Also Published As
Publication number | Publication date |
---|---|
JP6256005B2 (ja) | 2018-01-10 |
EP2814295A1 (en) | 2014-12-17 |
JPWO2013108320A1 (ja) | 2015-05-11 |
EP2814295A4 (en) | 2016-01-06 |
US20140364156A1 (en) | 2014-12-11 |
US9661607B2 (en) | 2017-05-23 |
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