Method and system for serving packet dormant handoff in mobile communication system
First Claim
Patent Images
1. A method for serving a packet dormant handoff, comprising:
- determining with a mobile switching center whether a mobile station performs a dormant handoff into an area of a destination base station controller/packet controller function (BSC/PCF), the BSC/PCF including a base station controller (BSC) and a packet controller having a packet control function (PCF); and
providing at least a location renewal message regarding the dormant handoff, the location renewal message being provided from the mobile switching center to an original BSC/PCF when the mobile station performs the dormant handoff, wherein an original packet data serving node (PDSN) withholds communication of a registration renewal message to the original BSC/PCF during a period beginning after the original BSC/PCF receives the location renewal message and ending when a communication link between the mobile station and the original PDSN is terminated.
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Abstract
A method for serving a packet dormant handoff is disclosed, including determining with a mobile switching center whether a mobile station performs a dormant handoff into an area of a destination base station controller/packet controller function (BSC/PCF) and providing information of the dormant handoff from the mobile switching center to an original BSC/PCF, when the mobile station performs the dormant handoff.
30 Citations
19 Claims
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1. A method for serving a packet dormant handoff, comprising:
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determining with a mobile switching center whether a mobile station performs a dormant handoff into an area of a destination base station controller/packet controller function (BSC/PCF), the BSC/PCF including a base station controller (BSC) and a packet controller having a packet control function (PCF); and providing at least a location renewal message regarding the dormant handoff, the location renewal message being provided from the mobile switching center to an original BSC/PCF when the mobile station performs the dormant handoff, wherein an original packet data serving node (PDSN) withholds communication of a registration renewal message to the original BSC/PCF during a period beginning after the original BSC/PCF receives the location renewal message and ending when a communication link between the mobile station and the original PDSN is terminated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of performing a dormant packet handoff during a first communication link between a mobile station and a source packet data serving node (PDSN), comprising:
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establishing a second communication link between the mobile station and a target PDSN, after the mobile station has moved from a service area of a source base station controller/packet control function (BSC/PCF) to a service area of a target BSC/PCF, the BSC/PCF including a base station controller (BSC) and a packet controller having a packet control function (PCF); communicating a location renewal message from a mobile switching center (MSC) to the source BSC/PCF, the location renewal message being regarding a dormant handoff; terminating the first communication link between the mobile station and the source PDSN, in response to the location renewal message; communicating from the source BSC/PCF to the source PDSN a registration request message having a lifetime field value set to zero, in response to receiving the location renewal message; releasing resources supporting the first communication link within the source PDSN, in response to the registration request message; communicating to the source BSC/PCF a registration response message having a lifetime field value set to zero, after releasing the first communication link; and releasing resources supporting the first communication link within the source BSC/PCF, in response to the registration response message, wherein the zero value in the lifetime field of the regristration request message informs the source PDSN that the first communication link is ready for termination, the zero value in the lifetime field of the registration response message informs the source BSC/PCF that the first communication link is ready for termination, and both the source BSC/PCF and the source PDSN terminate the first communication link without waiting for a registration renewal timer period to expire. - View Dependent Claims (10, 11, 12, 13)
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14. A method of performing a dormant packet handoff during a first communication link between a mobile station and a source packet data serving node (PDSN), comprising:
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establishing a second communication link between the mobile station and a target PDSN, after the mobile station has moved from a service area of a source base station controller/packet control function (BSC/PCF) to a service area of a target BSC/PCF, the BSC/PCF including a base station controller (BSC) and a packet controller having a packet control function (PCF); communicating a location renewal message from a mobile switching center (MSC) to the source BSC/PCF, the location renewal message being regarding a dormant handoff; terminating the first communication link between the mobile station and the source PDSN, in response to the location renewal message; and withholding the communication of a registration renewal message from the source PDSN to the source BSC/PCF, during a period beginning after the source BSC/PCF receives the location renewal message and ending when the first communication link is terminated.
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15. A communication system, comprising:
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a mobile station; a source packet data serving node (PDSN) that communicates with the mobile station, via a source base station controller/packet control function (BSC/PCF), through a first communication link, while the mobile station is located within a service area of the source BSC/PCF, the BSC/PCF including a base station controller (BSC) and a packet controller having a packet control function (PCF); a target PDSN that communicates with the mobile station, via a target BSC/PCF, through a second communication link, after the mobile station has moved from the service area of the source BSC/PCF to a service area of the target BSC/PCF; and a mobile switching center (MSC) that communicates a location renewal message to the source BSC/PCF, after the second communication link is established, the location renewal message being regarding a dormant handoff, wherein the location renewal message initiates the termination of the first communication link by the source PDSN and the source BSC/PCF, the source BSC/PCF communicates to the source PDSN a registration request message having a lifetime field value set to zero, after receiving the location renewal message, the source PDSN releases resources supporting the first communication link, in response to the registration request message, the source PDSN communicates to the source BSC/PCF a registration response message having a lifetime field value set to zero, after receiving the registration request message, the source BSC/PCF releases the first communication link, in response to the registration response message, the zero value in the lifetime field of the registration request message informs the source PDSN that the first communication link is ready for termination, the zero value in the lifetime field of the registration response message informs the source BSC/PCF that the first communication link is ready for termination, and both the source BSC/PCF and the source PDSN terminate the first communication link without waiting for a registration renewal timer period to expire. - View Dependent Claims (16, 17, 18)
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19. A communication system, comprising:
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a mobile station; a source packet data serving node (PDSN) that communicates with the mobile station, via a source base station controller/packet control function (BSC/PCF), through a first communication link, while the mobile station is located within a service area of the source BSC/PCF, the BSC/PCF including a base station controller (BSC) and a packet controller having a packet control function (PCF); a target PDSN that communicates with the mobile station, via a target BSC/PCF, through a second communication link, after the mobile station has moved from the service area of the source BSC/PCF to a service area of the target BSC/PCF; and a mobile switching center (MSC) that communicates a location renewal message to the source BSC/PCF, after the second communication link is established, the location renewal message being regarding a dormant handoff, wherein the location renewal message initiates the termination of the first communication link by the source PDSN and the source BSC/PCF, and wherein the source PDSN withholds the communication of a registration renewal message to the source BSC/PCF, during a period beginning after the source BSC/PCF receives the location renewal message and ending when the first communication link is terminated.
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Specification