Mobile communication system, SGW, terminal communication method and control method
First Claim
1. A mobile communication system comprising:
- a terminal (UE);
a MME (Mobility Management Entity) or a SGSN (Serving GPRS Support Node); and
a SGW (Serving Gateway);
wherein the SGW is configured to receive and to buffer a packet for the UE and to send a Downlink Data Notification message to the MME or the SGSN; and
the MME or the SGSN is configured to send a Downlink Data Notification Acknowledge message to the SGW in response to the Downlink Data Notification message,wherein the Downlink Data Notification Acknowledge message contains a cause value indicating a temporary rejection due to UE mobility, and the SGW buffers the packet until receiving a Modify Bearer Request message.
1 Assignment
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Accused Products
Abstract
A bearer management device that performs control to reliably receive an incoming packet call that is made while a mobile terminal device is moving is provided. A bearer management device (10) includes an incoming call control unit (11) that, in the case where a mobility management device (30) manages a location of a mobile terminal device (40) as a result of movement of the mobile terminal device (40) whose location has been managed by a mobility management device (20), suspends processing of an incoming call to the mobile terminal device (40) made during movement of the mobile terminal device (40) until receiving a notification about completion of movement of the mobile terminal device (40) from the mobility management device (30), and resumes incoming call processing to the mobile terminal device (40) after receiving a notification about completion of movement of the mobile terminal device (40) from the mobility management device (30).
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Citations
20 Claims
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1. A mobile communication system comprising:
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a terminal (UE); a MME (Mobility Management Entity) or a SGSN (Serving GPRS Support Node); and a SGW (Serving Gateway); wherein the SGW is configured to receive and to buffer a packet for the UE and to send a Downlink Data Notification message to the MME or the SGSN; and the MME or the SGSN is configured to send a Downlink Data Notification Acknowledge message to the SGW in response to the Downlink Data Notification message, wherein the Downlink Data Notification Acknowledge message contains a cause value indicating a temporary rejection due to UE mobility, and the SGW buffers the packet until receiving a Modify Bearer Request message. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A SGW (Serving Gateway) implemented in a mobile communication system including a terminal (UE) and a MME (Mobility Management Entity) or a SGSN (Serving GPRS Support Node), the SGW comprising:
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a receiver to receive a packet for the UE; a processor to buffer the packet; and a transmitter to send a Downlink Data Notification message to the MME or the SGSN wherein the receiver receives a Downlink Data Notification Acknowledge message from the MME or the SGSN in response to the Downlink Data Notification message, the Downlink Data Notification Acknowledge message contains a cause value indicating a temporary rejection due to UE mobility, and the processor buffers the packet until the SGW receives a Modify Bearer Request message. - View Dependent Claims (9, 10)
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11. A communication method of a mobile communication system including a terminal (UE), a MME (Mobility Management Entity) or a SGSN (Serving GPRS Support Node), and a SGW (Serving Gateway), the method comprising:
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receiving and buffering, by the SGW, a packet for the UE; sending, by the SGW, a Downlink Data Notification message to the MME or the SGSN; and sending, by the MME or the SGSN, a Downlink Data Notification Acknowledge message to the SGW in response to the Downlink Data Notification message, wherein the Downlink Data Notification Acknowledge message contains a cause value indicating a temporary rejection due to UE mobility, and the SGW buffers the packet until receiving a Modify Bearer Request message. - View Dependent Claims (12, 13)
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14. A control method for a SGW (Serving Gateway) implemented in a mobile communication system including a terminal (UE) and a MME (Mobility Management Entity) or a SGSN (Serving GPRS Support Node), the method comprising:
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receiving and buffering a packet for the UE; sending a Downlink Data Notification message to the MME or the SGSN; and receiving, from the MME or the SGSN, a Downlink Data Notification Acknowledge message in response to the Downlink Data Notification message, wherein the Downlink Data Notification Acknowledge message contains a cause value indicating a temporary rejection due to UE mobility, and the SGW buffers the packet until receiving a Modify Bearer Request message. - View Dependent Claims (15, 16)
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17. A terminal (UE) implemented in a mobile communication system, the terminal comprising:
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a processor to initiate a tracking area update procedure when there is a change of a first MME (Mobility Management Entity) to a second MME or a routing area update procedure when there is a change of a first SGSN (Serving GPRS Support Node) to a second SGSN; and a receiver to receive a paging from a base station or radio control equipment, the base station or radio control equipment receiving a message related to the paging from the second MME or the second SGSN in response to a Downlink Data Notification (DDN) message, wherein the receiver receives the paging if the tracking area update procedure or the routing area update procedure is in progress when the first MME or the first SGSN receives the DDN message. - View Dependent Claims (18)
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19. A reception method of a terminal (UE) implemented in a mobile communication system, the method comprising:
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initiating a tracking area update procedure when there is a change of a first MME (Mobility Management Entity) to a second MME or a routing area update procedure when there is a change of a first SGSN (Serving GPRS Support Node) to a second SGSN, and receiving a paging from a base station or radio control equipment, the base station or radio control equipment receiving a message related to the paging from the second MME or the second SGSN in response to a Downlink Data Notification (DDN), wherein the receiver receives the paging if the tracking area update procedure or the routing area update is in progress when the first MME or the first SGSN receives the DDN message. - View Dependent Claims (20)
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Specification