System and method for managing VoIP session continuity information using logical scalable units
First Claim
1. A method of communicating messages in a communication system, comprising:
- receiving a first message from a first client component, wherein the received first message was sent in response to the first client component determining that a user equipment set-up, modified, or terminated a VoIP call;
extracting first information from the received first message, using the extracted first information to obtain a common key, and using the obtained common key to;
identify an application component, andretrieve session continuity information from a cache memory, wherein the session continuity information includes information for maintaining session continuity for select services in the event of a failure without replicating session stores, including at least one of a session continuation (SC) parameter or a Session-Continuity Attribute-Value-Pair (AVP);
generating a second message that includes the retrieved session continuity information and sending the second message to the identified application component;
receiving a third message from the identified application component and forwarding the received third message to the first client component;
receiving a fourth message that includes updated session continuity information from the identified application component, extracting second information from the received fourth message, and determining the common key based on the extracted second information;
using the determined common key to identify the cache memory that stores the session continuity information;
updating the information stored in the identified cache memory based on the updated session continuity information included in the received fourth message; and
sending the received fourth message to a second client component.
1 Assignment
0 Petitions
Accused Products
Abstract
Logical scalable units (LSU) can be used within a single network data center to provide stateful scalability. However, LSUs are not suitable for operating across multiple network data centers in order to provide geographical redundancy in active-active scenarios while providing high availability. This is because the latencies associated with replicating full session information are unacceptably slow. An additional component in the LSU (known as an LSU Frontend) can be used to replicate a small subset of session information between LSUs. This subset of session information may be enough to enable LSUs to process requests in an acceptable way rather than outright failing. This may be particularly advantageous in scenarios where the requests relate to Voice over LTE calls, because outright failure is very perceivable to subscribers, and it causes resource leakage within the telecommunications network.
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Citations
28 Claims
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1. A method of communicating messages in a communication system, comprising:
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receiving a first message from a first client component, wherein the received first message was sent in response to the first client component determining that a user equipment set-up, modified, or terminated a VoIP call; extracting first information from the received first message, using the extracted first information to obtain a common key, and using the obtained common key to; identify an application component, and retrieve session continuity information from a cache memory, wherein the session continuity information includes information for maintaining session continuity for select services in the event of a failure without replicating session stores, including at least one of a session continuation (SC) parameter or a Session-Continuity Attribute-Value-Pair (AVP); generating a second message that includes the retrieved session continuity information and sending the second message to the identified application component; receiving a third message from the identified application component and forwarding the received third message to the first client component; receiving a fourth message that includes updated session continuity information from the identified application component, extracting second information from the received fourth message, and determining the common key based on the extracted second information; using the determined common key to identify the cache memory that stores the session continuity information; updating the information stored in the identified cache memory based on the updated session continuity information included in the received fourth message; and sending the received fourth message to a second client component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A server computing device, comprising:
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cache memory; a processor coupled to the cache memory, wherein the processor is configured with processor-executable instructions to perform operations comprising; receiving a first message from a first client component, wherein the received first message was sent in response to the first client component determining that a user equipment set-up, modified, or terminated a VoIP call; extracting first information from the received first message, and using the extracted first information to obtain a common key; using the obtained common key to; identify an application component, and retrieve session continuity information from a cache memory, wherein the session continuity information includes information for maintaining session continuity for select services in the event of a failure without replicating session stores, including at least one of a session continuation (SC) parameter or a Session-Continuity Attribute-Value-Pair (AVP); generating a second message that includes the retrieved session continuity information and sending the second message to the identified application component; receiving a third message from the identified application component and forwarding the received third message to the first client component; receiving a fourth message that includes updated session continuity information from the identified application component, extracting second information from the received fourth message, and determining the common key based on the extracted second information; using the determined common key to identify the cache memory that stores the session continuity information; updating the information stored in the identified cache memory based on the updated session continuity information included in the received fourth message; and sending the received fourth message to a second client component. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A non-transitory computer readable storage medium having stored thereon processor-executable software instructions configured to cause a processor of a server computing device to perform operations comprising, comprising:
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receiving a first message from a first client component, wherein the received first message was sent in response to the first client component determining that a user equipment set-up, modified, or terminated a VoIP call; extracting first information from the received first message, and using the extracted first information to obtain a common key; using the obtained common key to; identify an application component, and retrieve session continuity information from a cache memory, wherein the session continuity information includes information for maintaining session continuity for select services in the event of a failure without replicating session stores, including at least one of a session continuation (SC) parameter or a Session-Continuity Attribute-Value-Pair (AVP); generating a second message that includes the retrieved session continuity information and sending the second message to the identified application component; receiving a third message from the identified application component and forwarding the received third message to the first client component; receiving a fourth message that includes updated session continuity information from the identified application component, extracting second information from the received fourth message, and determining the common key based on the extracted second information; using the determined common key to identify the cache memory that stores the session continuity information; updating the information stored in the identified cache memory based on the updated session continuity information included in the received fourth message; and sending the received fourth message to a second client component. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification