Packet gateway reassignment
First Claim
1. A method comprising:
- receiving, by a serving gateway (SGW) device of a radio access network (RAN), a create session request related to a wireless communication device (WCD), wherein the create session request includes an Internet Protocol (IP) address of a first packet gateway (PGW) device, and wherein the WCD has an established bearer session with the first PGW device;
transmitting, by the SGW device, a message including the IP address of the first PGW device to a second PGW device, wherein reception of the message causes the second PGW device to use the IP address of the first PGW device when retrieving, from the first PGW device, context information related to the established bearer session, wherein the context information includes an IP address assigned to the WCD; and
establishing, by the SGW device, a new bearer session involving the WCD, the SGW device, and the second PGW device, wherein the new bearer session maintains assignment of the IP address assigned to the WCD.
4 Assignments
0 Petitions
Accused Products
Abstract
An example embodiment may involve receiving an attach request related to a WCD. It may be determined that the WCD already has an established bearer session with a first PGW device. Possibly in response to receiving the attach request from the WCD and the WCD already having the established bearer session with the first PGW device, a request for PGW device assignment may be transmitted to a server device. A response from the server device may be received, where the response may indicate assignment of a second PGW device. A create session request may be transmitted to an SGW device. Reception of the create session request may cause the SGW device to establish, for the WCD, a new bearer session to the second PGW device. Establishment of the new bearer session may involve the second PGW device retrieving, from the first PGW device, context information related to the WCD.
62 Citations
17 Claims
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1. A method comprising:
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receiving, by a serving gateway (SGW) device of a radio access network (RAN), a create session request related to a wireless communication device (WCD), wherein the create session request includes an Internet Protocol (IP) address of a first packet gateway (PGW) device, and wherein the WCD has an established bearer session with the first PGW device; transmitting, by the SGW device, a message including the IP address of the first PGW device to a second PGW device, wherein reception of the message causes the second PGW device to use the IP address of the first PGW device when retrieving, from the first PGW device, context information related to the established bearer session, wherein the context information includes an IP address assigned to the WCD; and establishing, by the SGW device, a new bearer session involving the WCD, the SGW device, and the second PGW device, wherein the new bearer session maintains assignment of the IP address assigned to the WCD. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A radio access network (RAN) comprising:
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a first packet gateway (PGW) device assigned a first Internet Protocol (IP) address; a second PGW device assigned a second IP address; and a serving gateway (SGW) device configured to; receive a create session request related to a wireless communication device (WCD), wherein the create session request includes the first IP address, and wherein the WCD has an established bearer session with the first PGW device, transmit a message including the first IP address to the second PGW device, wherein reception of the message causes the second PGW device to use the first IP address when retrieving, from the first PGW device, context information related to the established bearer session, wherein the context information includes a third IP address assigned to the WCD, and establish a new bearer session involving the WCD, the SGW device, and the second PGW device, wherein the new bearer session maintains assignment of the third IP address assigned to the WCD. - View Dependent Claims (10, 11, 12, 13)
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14. An article of manufacture including a non-transitory computer-readable medium, having stored thereon program instructions that, upon execution by a serving gateway (SGW) device in a radio access network (RAN), cause the SGW device to perform operations comprising:
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receiving a create session request related to a wireless communication device (WCD), wherein the create session request includes an Internet Protocol (IP) address of a first packet gateway (PGW) device, and wherein the WCD has an established bearer session with the first PGW device; transmitting a message including the IP address of the first PGW device to a second PGW device, wherein reception of the message causes the second PGW device to use the IP address of the first PGW device when retrieving, from the first PGW device, context information related to the established bearer session, wherein the context information includes an IP address assigned to the WCD; and establishing a new bearer session involving the WCD, the SGW device, and the second PGW device, wherein the new bearer session maintains assignment of the IP address assigned to the WCD. - View Dependent Claims (15, 16, 17)
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Specification