JP2011124869A - Gateway, communication system, and user data converting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gateway, user data converting method, program and communication system, which have a function for conversion into user data of a data form corresponding to a communication terminal. <P>SOLUTION: A HNB-GW 4a is connected between a CN 5 and an HNB (Home Node B) 2, and communicates with a UE (User Equipment) 10 via the HNB 2. The HNB-GW 4a has: a UE registration information-holding part 45a for holding identification information of the UE 10 and the number of times of performing access from a communication terminal to the HNB 2; a class determining part 47a for determining a class for every UE 10 in accordance with the identification information and the number of times of access held in the UE registration information holding part 45a; and a user data-converting part 49a for converting user data into a predetermined form corresponding to the class of the UE 10, and transmitting the converted user data to the UE 10 or to the CN 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gateway that is connected between a core network and a radio base station and communicates with a communication terminal through the radio base station, a communication system having a gateway, and a user data conversion method in the communication system.

  UE (User Equipment: terminal) communicates with HNB (Home Node B: small radio base station) by radio, and via HNB-GW (Home Node B-Gateway: small radio base station gateway) connected to HNB A signaling link is established with the CN (Core Network).

  As an example of such a communication system, for example, Patent Document 1 discloses a management table storing a combination of services available in a user terminal (UE) and a priority of the combination, as a radio management network and a core network. A technique is disclosed in which each UE has a service combination, and a wireless management network, a core network, and a user terminal recognize each other a combination of services and a priority of the combination based on a management table.

JP 2002-064849 A

  By the way, when the UE accesses content data for PC, for example, if the UE does not have a function of decoding the data, there arises a problem that the UE cannot handle the data. Further, in order to provide different services for each UE, it is necessary for each device to have the same management table as in Patent Document 1, and the update and addition processes are complicated. Also, when the UE accesses PC content (moving images, images, etc.), there may occur a situation where it cannot be displayed correctly or cannot be displayed at all, depending on the data size and data format. In addition, for example, there are three access modes (Access Mode) in HNB, and in the case of hybrid mode (Hybrid Mode), it is considered to allow preferential treatment for a specific UE. Therefore, a technology for providing different services for each UE is required.

  The present invention has been made to solve such problems, and has a gateway, a user data conversion method, a program, and a communication system having a function of converting user data in a data format corresponding to a communication terminal. The purpose is to provide.

  In order to achieve the above-described object, a gateway according to the present invention is a gateway that is connected between a core network and a radio base station and communicates with a communication terminal through the radio base station, and includes identification information of the communication terminal. And a first registration information holding unit that holds the number of accesses to the radio base station by the communication terminal, and each communication terminal according to the identification information and the number of accesses held in the first registration information holding unit. A class determination unit that determines a class of the user, and converts user data into a predetermined format according to the class of the communication terminal and transmits the user data from the core network to the communication terminal and / or from the communication terminal to the core network A user data conversion unit having a user data conversion unit for transmission.

  A user data conversion method according to the present invention is a user data conversion method in a gateway that is connected between a core network and a radio base station and communicates with a communication terminal through the radio base station. And the number of accesses to the radio base station of the communication terminal are determined, a class for each communication terminal is determined according to the held identification information and the number of accesses, and the class of the communication terminal is determined. A user data conversion unit that converts user data into a predetermined format and transmits the user data from the core network to the communication terminal and / or transmits the user data from the communication terminal to the core network.

  Furthermore, a program according to the present invention is a program for causing a computer to execute user data conversion processing in a gateway that is connected between a core network and a radio base station and communicates with a communication terminal through the radio base station. Holding the identification information of the communication terminal and the number of times the communication terminal has accessed the radio base station, determining a class for each communication terminal according to the held identification information and the number of times of access, and the communication terminal A user data converter that converts user data into a predetermined format according to the class and transmits the user data from the core network to the communication terminal and / or transmits the user data from the communication terminal to the core network. .

  Furthermore, a communication system according to the present invention is a communication system having a gateway connected to a core network, a communication terminal, and a wireless base station for wireless communication between the gateway and the communication terminal, wherein the gateway is A first registration information holding unit that holds the identification information of the communication terminal and the number of accesses of the communication terminal to the radio base station, and the identification information and the number of accesses that are held in the first registration information holding unit. In response, a class determination unit that determines a class for each communication terminal, and converts user data into a predetermined format according to the class of the communication terminal and transmits the user data from the core network to the communication terminal and / or the A user data conversion unit having a user data conversion unit that transmits the communication terminal to the core network.

  A user data conversion method according to the present invention includes a gateway connected to a core network, a communication terminal, and a user data conversion in a communication system having a wireless base station for wireless communication between the gateway and the communication terminal. When the wireless base station makes a registration request to the gateway, the wireless base station retains position information and / or access mode information of the wireless base station, and the communication terminal communicates with the gateway via the wireless base station. When a registration request is made, the communication terminal holds the identification information of the communication terminal and the access count of the communication terminal to the radio base station, and the message from the communication terminal for the communication terminal to establish a signal link with the core network Is transferred to the core network and included in the response message from the core network. Status information indicating the status of the communication terminal, and the stored location information and / or access mode information of the radio base station, identification information of the communication terminal, and access of the communication terminal to the radio base station The class of the communication terminal is determined based on the number of times and the status information held in the status holding unit, user data is converted into a predetermined format according to the class of the communication terminal, and the core network A user data converter that transmits to the communication terminal and / or transmits from the communication terminal to the core network.

  ADVANTAGE OF THE INVENTION According to this invention, the gateway which has the function to convert into the user data of the data format according to a communication terminal, a user data conversion method, a program, and a communication system can be provided.

It is a figure which shows the communication system concerning Embodiment 1 of this invention. It is a figure which shows the other example of the communication system concerning Embodiment 1 of this invention. It is a sequence diagram which shows operation | movement of the information system concerning Embodiment 1 of this invention. It is a figure which shows an example of the determination table which the determination part 47 of the gateway in Embodiment 1 of this invention has. It is a figure which shows an example of the determination result holding | maintenance table which the status holding | maintenance part 46 of the gateway in Embodiment 1 of this invention has. It is a figure which shows an example of the user data conversion table which the user data conversion part 49 of the gateway in Embodiment 1 of this invention has. It is a sequence diagram which shows operation | movement of the information processing system concerning Embodiment 2 of this invention. It is a figure which shows the information processing system concerning Embodiment 3 of this invention. It is a sequence diagram which shows operation | movement of the information processing system concerning Embodiment 3 of this invention.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. In this embodiment, the present invention is applied to a gateway that is connected between a core network and a radio base station and communicates with a communication terminal through the radio base station.

  In this embodiment, based on registration information of UE (User Equipment) and HNB (Home Node B), HMB-GW (Home Node B Gateway) converts content data for PC into data for UE (User Equipment). Converting.

  FIG. 1 is a diagram illustrating a communication system according to the present embodiment. As illustrated in FIG. 1, the communication system 1 a according to the present embodiment includes a UE 10, an HNB 2, an HNB-GW 4 a, and a CN (Core Network) 5. The UE 10 is, for example, a third generation mobile cellular phone (terminal). The HNB 2 is a third generation small radio base station for homes and small offices, for example. Moreover, HNB-GW4a is a gateway for connecting HNB2 with CN5, for example, and CN5 is a 3rd generation mobile switching network, for example.

  The HNB-GW 4a is connected between the CN 5 and the HNB 2 and communicates with the UE 10 through the HNB 2. Here, the HNB-GW 4a is held in the UE registration information holding unit 45a as the first registration information holding unit that holds the identification information of the UE 10 and the number of accesses of the UE 10 to the HNB 2, and the US registration information holding unit 45a. A class determination unit 47a that determines a class for each UE 10 according to the identification information and the number of accesses, and a user that converts user data into a predetermined format according to the class of the UE 10 and transmits it to the UE 10 or transmits it to the CN 5 A data conversion unit 49a is included.

  When the UE 10 makes a registration request to the HNB-GW 4a via the HNB 2, the UE registration information holding unit 45a holds the identification information of the UE 10 and the number of accesses to the HNB 2 at the end of the UE 10. Then, the class determination unit 47a determines the class of the UE 10 based on the identification information of the UE 10 held in the UE registration information holding unit 45 and the number of accesses to the HNB 2 at the end of the UE 10. Then, the user data conversion unit 49a converts user data into a predetermined format according to the class of the UE 10 and transmits the user data to the UE 10 or transmits it to the CN 5 to provide different services for each UE 10. .

  Here, in this example, the class is determined according to the identification information of the UE 10 and the number of accesses of the UE 10 to the HNB 2, but different information can also be used. That is, for example, when the HNB 2 makes a registration request to the HNB-GW 4a, the location information and access mode information of the HNB 2 may be held and used. Alternatively, the HNB-GW 4a transfers a message from the UE 10 for the UE 10 to establish a signaling link with the CN 5 to the CN 5, and retains status information indicating the status of the UE 10 included in the response message from the CN 5 at this time. This may be used. In this way, UEs are classified by appropriately combining various information capable of specifying the UE 10, and services corresponding to the class, for example, user data converted into a desired communication speed according to the class are provided. Can do. The service corresponding to the class may be other than a desired communication speed, and may be a data format, a compression method, or the like according to the function / capability of the UE.

  For example, conversion of a moving image compression codec, conversion of an audio compression codec, conversion of an image compression codec, conversion of a web page, or the like can be performed according to a class. Specifically, for example, in the case of conversion of a moving image compression codec, an MPEG (Moving Picture Experts Group) 1 / MPEG2 codec that cannot be reproduced by the UE 10 is converted into, for example, an MPEG4 codec that can be reproduced by the UE 10. In the case of conversion of the audio compression codec, the MP3 codec that cannot be reproduced by the UE 10 is converted into an AAC (Advanced Audio Coding) codec that can be reproduced by the UE 10. In the case of conversion of an image compression codec, a PNG (Portable Network Graphics) codec that cannot be reproduced by the UE 10 is converted into a JPEG (Joint Photographic Experts Group) codec that can be reproduced by the UE 10. Furthermore, if it is conversion of a web page, HTML (Hyper Text Markup Language) which cannot be displayed on UE10 will be converted into CHTML (Compact HTML) which can be displayed on UE10.

  Hereinafter, this embodiment will be described in more detail. FIG. 2 is a diagram illustrating another example of the communication system according to the present embodiment. The communication system 1 is similar to the above-described communication system 1a in that the communication system 1 includes UE10, HNB2, HNB-GW4, and CN5, but the HNB-GW4 according to the present embodiment classifies UE10 in more detail. can do. The HNB-GW 4 includes an HNB transmission / reception unit 40, a CN transmission / reception unit 41, a RANAP function unit 42, an HNBAP function unit 43, an HNB registration information holding unit 44 as a second registration information holding unit, a UE registration information holding unit 45, It has a status holding unit (Preferential holding unit) 46, a determination unit 47, a determination result holding unit 48, and a user data conversion unit 49. The determination unit 47 and the determination result holding unit 48 correspond to the class determination unit described above.

  The HNB transceiver 40 has an interface for connecting to the HNB 2 and transmits / receives data to / from the HNB 2. The CN transmission / reception unit 41 has an interface for connecting to the CN, and transmits / receives data to / from the CN.

  The RANAP function unit 42 realizes a RANAP (Radio Access Network Application Part, hereinafter abbreviated as RANAP) protocol function defined by 3GPP TS25.413, and has a function of terminating the RANAP message.

  The HNBAP function unit 43 has a function of realizing an HNBAP (HNB application Part, hereinafter abbreviated as HNBAP) protocol function defined in 3GPP TS25.469 and terminating an HNBAP message.

  The HNB registration information holding unit 44 holds the location information and access mode information of the HNB 2 when the HNB 2 makes a registration request to the HNB-GW 4. Specifically, it has a function of holding the access mode and location information of the HNB included in the HNBAP: HNB Register Request message.

  The UE registration information holding unit 45 holds the identification information of the UE 10 and the access count of the UE 10 to the HNB 2 when the UE 10 makes a registration request to the CN 5 via the HNB 2. Specifically, when receiving an HNBAP: UE Register Request message, it has a function of holding UE identification information, the number of accesses, and information on the HNBs in the area.

  The status holding unit 46 holds status information indicating the status of the UE 10 included in the response message from the CN 5 during the UE 10 registration process. Specifically, it has a function of holding CSG membership status information included in the RANAP: Connect message.

  The determination unit 47 has a function of calculating a score for each UE based on a determination table (see FIG. 4). The determination result holding unit 48 has a function of identifying a class for each UE based on a determination result holding table (see FIG. 5).

  The user data conversion unit 49 has a function of converting received data based on a user data conversion table (see FIG. 6).

  Here, the status of the status holding unit 46 will be described. HNB2 has three access modes (closed mode, open mode, hybrid mode), UEs that can be connected differ depending on the access mode of HNB22, and preferential control is performed according to the connected UE. Is possible.

  First, in the closed mode, the HNB 2 can connect the UE 10 having the CSG ID of the HNB 2 to the Allowed Closed Subscriber Group identified subscribers List (hereinafter, abbreviated as Allowed CSG list). In the open mode, the HNB 2 does not restrict access. Further, in the hybrid mode, the HNB can connect the UE having the CSG ID of the HNB to the Allowed CSG List and other normal UEs that do not have the UE. Further, it is possible to perform preferential control on a UE having the HNB CSG ID in the Allowed CSG List.

  Further, in order to restrict access to the HNB2, the operator sets a CSG ID in the HNB2, and only the UE having the CSG ID in the Allowed CSG list allows the access to the other UE that the HNB2 permits and does not have. Access can be restricted.

  In the HNB-GW 4 according to the present embodiment configured as described above, the following functions are newly provided. First, at the time of the HNB Registration process, the HNB-GW 4 has a function of holding the location information of the HNB 2 and the access mode information of the HNB as the registration information of the HNB 2. For this reason, an HNB registration information holding unit 44 is provided. The location information and the access mode information held in the HNB registration information holding unit 44 are used when the score for each UE 10 is counted, and classification is performed according to the score.

  Secondly, during the UE Registration process, the HNB-GW 4 has a function of holding the identification information of the UE 10 as the registration information of the UE 10, counting the number of accesses of the UE 10, and holding the number of times. For this reason, the UE registration information holding unit 45 is provided. The identification information and the number of accesses held in the UE registration information holding unit 45 are also used when counting points for each UE 10, and classification is performed according to the points.

  Thirdly, at the time of UE Registration processing, the HNB-GW 4 has a function of holding information on “CSG membership status” when the RANAP Connect message from the CN 5 is included. Therefore, a status holding unit 46 is provided. The UE 10 having “CSG membership status” information is added with reference to the status holding unit 46.

  In the present embodiment, the first to third functions are described, but it is needless to say that any one or more of them can be used in combination.

  Next, 4thly, HNB-GW4 has a function which calculates the score for every UE based on the information hold | maintained by the 1st, 2nd, 3rd function. For this reason, it has the determination part 47. FIG. FIG. 4 is a diagram illustrating an example of a determination table included in the determination unit 47. Points are allocated for each access mode, HNB2 position information, and the number of accesses.

  Fifth, the HNB-GW 4 has a function of identifying UEs by class based on the score for each UE calculated by the fourth function. Therefore, the determination result holding unit 48 is provided. FIG. 5 is a diagram illustrating an example of the determination result holding table included in the status holding unit 46. In this example, UE1 is allocated to class 2, UE2 is allocated to class 3, and UE3 is allocated to class 1.

  Sixth, the HNB-GW 4 has a function of providing a different service for each class based on the UE class determined by the fifth function when the PC content data is received. For this purpose, a user data converter 49 is provided. FIG. 6 is a diagram illustrating an example of a user data conversion table included in the user data conversion unit 49. In this example, class 1 is converted into data at a transfer rate of 100 kbps, class 2 is converted into data at 200 kbps, and class 3 is converted into data at a transfer rate of 300 kbps.

  Next, the operation of the communication system according to the present embodiment will be described. FIG. 3 is a sequence diagram showing the operation of the information system according to this exemplary embodiment. As illustrated in FIG. 3, the HNB 2 transmits an HNBAP HNB Register Request message to the HNB-GW 4 in order to perform a registration process (HNB Registration process) for accessing the network (S 1). This message includes HNB location information and information related to the access mode. At this time, in the present embodiment, the HNB-GW 4 stores information included in the message in the HNB registration information holding unit 44. The HNB-GW 4 sends a registration request reception (HNBAP: HNB Register Accept) message to the HNB 2 (S2).

  Further, the UE 10 sends an RRC: Initial Direct Transfer message to the HNB 2 (S3) to establish a radio link in order to perform a registration process (UE Registration process) for accessing the network. HNB2 transmits a HNBAP: UE Register Request message to HNB-GW4 (S4). This message includes information regarding the identification information of the UE. At this time, the HNB-GW 4 stores information included in this message in the UE registration information holding unit 45. Further, the UE registration information holding unit 45 counts and holds the number of times registration is performed for each UE. In response to this request, a registration request acceptance (HNBAP: UE Register Accept) message is sent to the HNB 2 (S5).

  After receiving the HNBAP: UE Register Accept message from the HNB-GW4, the HNB2 transmits a RANAP: Connect (Initial UE) message to the HNB-GW4 in order to establish a signal link with the CN5 (S6). The HNB-GW 4 transfers this message to the CN 5 (S7).

  In the present embodiment, when CN 5 treats UE 10 as a preferential UE, CN 5 transmits a RANAP message including CSG Membership Status information to HNB 2 via HNB-GW 4 (S8). At this time, the HNB-GW 4 holds the CSG Membership Status information included in this message in the status holding unit 46. When the link is established, the HNB-GW 4 sends a RANAP: Connect message to the HNB 2 (S9).

  Further, the HNB-GW 4 has the determination table shown in FIG. 4 as described above in order to calculate the score for each UE. For each access mode (open / hybrid / closed) of the HNB2, this determination table indicates whether or not the HNB 2 accessed by the UE 10 is a specific location (latitude / longitude), whether the UE status information is retained, Points are defined based on the number of accesses. The HNB-GW 4 acquires information from the registration information holding unit 44, the UE registration information holding unit 45, and the status holding unit 46 of the HNB-GW 4 in order to calculate the UE score based on the determination table. For example, when the UE 10 operates in the closed mode, accesses the HNB 2 located at latitude: 43 degrees and longitude: 139 degrees, and the number of accesses to the HNB 2 is the fifth, the calculation is performed according to the determination table of FIG. The number of points is 3 points (HNB Location match) +1 point (access count) = 4 points.

  The HNB-GW 4 further has a determination result holding table shown in FIG. 5 in which the UE belongs to which class, as described above, in the determination result holding unit 48. This determination result holding table determines the class according to the score of UE10. For example, the score of the UE is 4, and according to the determination result holding table in FIG. 5, the class is “2”.

  Thereafter, when the UE 10 requests access to content for PC (including moving images and images), the HNB-GW 4 receives content data from the content server via the CN 5 (S10). At that time, the HNB-GW 4 performs data conversion in a format that can be displayed and played back on the UE 10 by the user / data converter 49. At the time of data conversion, the user / data converter 48 inquires of the determination result holding unit 48 to determine the quality (bit rate) of data to be converted. For example, if it is class 2, it is converted into medium image quality (200 kbps) data. Thereafter, the converted data is transmitted to the UE 10 via the HNB 2 (S11).

  As described above, in the present embodiment, based on registration information of the UE 10 and the HNB 2, the HNB-GW 4 can convert, for example, content data for a PC into a data format corresponding to the UE 10. .

  Next, a second embodiment of the present invention will be described. FIG. 7 is a sequence diagram illustrating the operation of the information processing system according to the present embodiment. As shown in FIG. 7, the steps up to S9 are the same as those of the first embodiment shown in FIG. Thereafter, the UE 10 is uploading data. When the HNB-GW 4 receives data from the UE 10 (S21), the user data conversion unit 49 converts the data into user data based on the table information in the determination result holding unit 48 as in the first embodiment. For example, when the class 1 UE 10 transfers data to the HNB-GW 4 at a bit rate of 300 kbps, in the above example, the user data conversion unit 49 of the HNB-GW 4 converts this to user data at a bit rate of 100 kbps. And uploads the data to the content server via the CN 5 (S22).

  Also in the present embodiment, as in the first embodiment, depending on the class of the UE 10, the HNB-GW 4 converts, for example, video compression codec conversion, audio compression codec conversion, and image compression codec conversion for user data. Conversion, web page conversion, or the like can be performed.

  Next, a third embodiment of the present invention will be described. In the first and second embodiments described above, it has been described that all the functions 1 to 6 are realized by the HNB-GW4. However, all the functions can be realized by the HNB 2b. FIG. 7 is a diagram illustrating the information processing system according to the present embodiment, and FIG. 8 is a sequence diagram illustrating the operation of the information processing system according to the present embodiment.

    As illustrated in FIG. 7, in the information processing system 1b according to the present embodiment, the UE transmission / reception unit 20 has an interface for connecting to the UE 10, and transmits and receives data to and from the UE 10. The HNB-GW transmission / reception unit 21 has an interface for connecting to the HNB-GW 4b, and transmits / receives data to / from the HNB-GW 4b.

  The RANAP function unit 22 realizes a RANAP protocol function defined by 3GPP TS25.413 and has a function of terminating the RANAP message.

  The RRC function unit 23 realizes an RRC protocol function defined by 3GPP TS25.331 and has a function of terminating an RRC message.

  The HNB registration information holding unit 24 holds the location information and access mode information of the HNB2. When the UE 10 makes a registration request to the CN 5 via the HNB 2b, the UE registration information holding unit 25 holds the identification information of the UE 10 and the access count of the UE 10 to the HNB 2b. Specifically, it has a function of holding UE identification information, the number of accesses, and information on HNBs in the area when receiving an RRC: Initial Direct Transfer message.

  The status holding unit 26 holds status information indicating the status of the UE 10 included in the response message from the CN 5 during the UE 10 registration process. Specifically, it has a function of holding CSG membership status information included in the RANAP: Connect message.

  The determination unit 27 has a function of calculating a score for each UE based on a determination table (see FIG. 4). The determination result holding unit 28 has a function of identifying a class for each UE based on a determination result holding table (see FIG. 5).

  The user data conversion unit 29 has a function of converting received data based on a user data conversion table (see FIG. 6).

  As illustrated in FIG. 9, the HNB 2b transmits an HNBAP HNB Register Request message to the HNB-GW 4b in order to perform a registration process (HNB Registration process) for accessing the network (S31). This message includes HNB location information and information related to the access mode. In the present embodiment, the HNB 2b stores information included in the message in the HNB registration information holding unit 24 in advance. The HNB-GW 4b sends a registration request receipt (HNBAP: HNB Register Accept) message to the HNB 2b (S32).

  Further, the UE 10 sends an RRC: Initial Direct Transfer message to the HNB 2b (S33) to establish a radio link in order to perform a registration process (UE Registration process) for accessing the network. This message includes information regarding the identification information of the UE. At this time, the HNB 2b stores the information included in this message in the UE registration information holding unit 25. Further, the UE registration information holding unit 25 counts and holds the number of times registration is performed for each UE. The HNB 2b transmits an HNBAP: UE Register Request message to the HNB-GW 4b (S34). In response to this request, the HNB-GW 4b sends a registration request acceptance (HNBAP: UE Register Accept) message to the HNB 2b (S35).

  After receiving the HNBAP: UE Register Accept message from the HNB-GW 4b, the HNB 2b transmits a RANAP: Connect (Initial UE) message to the HNB-GW 4b in order to establish a signal link with the CN 5 (S36). The HNB-GW 4b transfers this message to the CN 5 (S37).

  In the present embodiment, when CN 5 treats UE 10 as a preferential UE, CN 5 transmits a RANAP message including CSG Membership Status information to HNB 2b via HNB-GW 4b (S38). When the link is established, the HNB-GW 4b sends a RANAP: Connect message to the HNB 2b (S39). The HNB 2b holds the CSG Membership Status information included in this message in the Preferential holding unit 26.

  Further, the HNB 2b has the determination table shown in FIG. 4 as described above in order to calculate the score for each UE. This determination table shows whether or not the HNB 2b accessed by the UE 10 is a specific location (latitude / longitude), whether or not the UE's Preferential information is retained, for each access mode (open / hybrid / closed) of the HNB 2b, Points are defined based on the number of accesses. The HNB 2b obtains information from the registration information holding unit 24, the UE registration information holding unit 25, and the status holding unit 26 of the HNB 2b in order to calculate the UE score based on the determination table.

  The HNB 2b further includes a determination result holding table shown in FIG. 5 in which the determination result holding unit 28 holds which class the UE 10 belongs to, as described above. This determination result holding table determines the class according to the score of UE10.

  Thereafter, when the UE 10 requests access to content for PC (including moving images and images), the HNB 2b receives content data from the content server via the CN 5 (S40). At that time, the HNB 2b converts the content for PC in the user / data converter 29 into a format that can be displayed and played back by the UE 10. At the time of data conversion, the user / data conversion unit 28 inquires of the determination result holding unit 28 and determines the quality (bit rate) of data to be converted. Thereafter, the converted data is transmitted from the HNB 2b to the UE 10 (S41).

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, in the first and second embodiments described above, it has been described that all the functions 1 to 6 are realized by the HNB-GW4 or the HNB2b. However, these functions are shared by the HNB-GW4 and the HNB2. You may make it do.

  For example, in the above-described embodiment, the hardware configuration has been described. However, the present invention is not limited to this, and arbitrary processing may be realized by causing a CPU (Central Processing Unit) to execute a computer program. Is possible. In this case, the computer program can be provided by being recorded on a recording medium, or can be provided by being transmitted via the Internet or another transmission medium.

1, 1a, 1b communication system 2, 2b HNB
4, 4a, 4b HNB-GW
5 CN
10 UE
40 HNB transmission / reception unit 41 CN transmission / reception unit 42 RANAP function unit 43 HNBAP function unit 44 HNB registration information holding unit 45 UE registration information holding unit 46 status holding unit 47a class determination unit 47 determination unit 48 determination result holding unit 49, 49a user・ Data converter

Claims (19)

A gateway connected between a core network and a radio base station and communicating with a communication terminal through the radio base station,
A first registration information holding unit for holding the identification information of the communication terminal and the number of accesses to the radio base station of the communication terminal;
A class determining unit that determines a class for each communication terminal according to the identification information and the number of accesses held in the first registered information holding unit;
A user data converter that converts user data into a predetermined format according to the class of the communication terminal and transmits the user data from the core network to the communication terminal and / or transmits from the communication terminal to the core network. ,gateway. The class determination unit
A determination unit that calculates a score of the communication terminal according to the identification information and the number of accesses;
A class determination table in which classes are determined according to points,
The gateway according to claim 1, wherein the class of the communication terminal is determined with reference to the class determination table. A second registration information holding unit for holding position information and / or access mode information of the radio base station;
The gateway according to claim 1 or 2, wherein the class determination unit determines a class based on registration information held in the first and second registration information holding units. The class determination unit
A determination unit that calculates the score of the communication terminal according to the registration information held in the first and second registration information holding units;
A class determination table in which classes are determined according to points,
The gateway according to claim 3, wherein the class of the communication terminal is determined with reference to the class determination table. A status holding unit that holds status information indicating the status of the communication terminal included in the response message from the core network during the communication terminal registration process;
The class determination unit determines a class based on the registration information held in the first and second registration information holding units and the status information held in the status holding unit. The gateway according to item 1. The class determination unit
A determination unit that calculates the score of the communication terminal according to the registration information held in the first and second registration information holding units and the status information held in the status holding unit;
A class determination table in which classes are determined according to points,
The gateway according to claim 5, wherein the class of the communication terminal is determined with reference to the class determination table.   The user data conversion unit has a user data conversion table whose data format is determined according to the class, and converts user data with reference to the user data conversion table. 6. The gateway according to 6.   The gateway according to claim 1, wherein the user data conversion unit converts the user data to a bit rate according to the class. A user data conversion method in a gateway connected between a core network and a radio base station and communicating with a communication terminal through the radio base station,
Holding the identification information of the communication terminal and the number of accesses to the radio base station of the communication terminal,
According to the held identification information and the number of accesses, determine a class for each communication terminal,
A user data conversion method, wherein user data is converted into a predetermined format according to a class of the communication terminal and transmitted from the core network to the communication terminal and / or transmitted from the communication terminal to the core network. Holding the location information and / or access mode information of the radio base station,
10. The user data conversion method according to claim 9, wherein the class is determined based on the stored location information and / or access mode information of the radio base station. Holds status information indicating the status of the communication terminal included in the response message from the core network during the communication terminal registration process,
The user data conversion method according to claim 9 or 10, wherein a class is determined based on the status information held in the status holding unit.   The user data conversion method according to claim 9, wherein when converting the user data, the user data is converted to a bit rate corresponding to the class. A program for causing a computer to execute user data conversion processing in a gateway connected between a core network and a radio base station and communicating with a communication terminal through the radio base station,
Holding the identification information of the communication terminal and the number of accesses to the radio base station of the communication terminal,
According to the held identification information and the number of accesses, determine a class for each communication terminal,
A program for converting user data into a predetermined format according to a class of the communication terminal and transmitting the user data from the core network to the communication terminal and / or transmitting from the communication terminal to the core network. A communication system comprising a gateway connected to a core network, a communication terminal, and a wireless base station for wireless communication between the gateway and the communication terminal,
The gateway is
A first registration information holding unit for holding the identification information of the communication terminal and the number of accesses to the radio base station of the communication terminal;
A class determining unit that determines a class for each communication terminal according to the identification information and the number of accesses held in the first registered information holding unit;
A user data converter that converts user data into a predetermined format according to the class of the communication terminal and transmits the user data from the core network to the communication terminal and / or transmits from the communication terminal to the core network. ,Communications system. A second registration information holding unit for holding position information and / or access mode information of the radio base station;
The communication system according to claim 14, wherein the class determining unit determines a class based on registration information held in the first and second registration information holding units. A status holding unit that holds status information indicating a status of the communication terminal included in a message transmitted from the core network during the communication terminal registration process;
The communication according to claim 14 or 15, wherein the class determination unit determines a class based on registration information held in the first and second registration information holding units and the status information held in the status holding unit. system.   The communication system according to claim 14, wherein the radio base station controls access of the communication terminal according to the access mode. A user data conversion method in a communication system having a gateway connected to a core network, a communication terminal, and a wireless base station for wireless communication between the gateway and the communication terminal,
When the wireless base station makes a registration request to the gateway, the wireless base station holds location information and / or access mode information,
When the communication terminal makes a registration request to the gateway via the radio base station, the identification information of the communication terminal and the number of accesses to the radio base station of the communication terminal are held,
The communication terminal forwards a message from the communication terminal for establishing a signal link with the core network to the core network;
Holding status information indicating the status of the communication terminal included in the response message from the core network,
The position information and / or access mode information of the held radio base station, the identification information of the communication terminal, the number of accesses to the radio base station of the communication terminal, and the status information held in the status holding unit And determining a class of the communication terminal,
A user data conversion method, wherein user data is converted into a predetermined format according to a class of the communication terminal and transmitted from the core network to the communication terminal and / or transmitted from the communication terminal to the core network. A wireless base station that is connected to a core network via a gateway and wirelessly communicates with a communication terminal,
A first registration information holding unit for holding the identification information of the communication terminal and the number of accesses from the communication terminal;
A class determining unit that determines a class for each communication terminal according to the identification information and the number of accesses held in the first registered information holding unit;
The user data is converted into a predetermined format corresponding to the class of the communication terminal, and data from the core network is transmitted to the communication terminal and / or user data from the communication terminal is transmitted to the core network. A radio base station having a user data converter.

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