Method and apparatus for handling non-integrity protected reject messages in non-public networks
US-2024357482-A1 · Oct 24, 2024 · US
Link failure detection and interworking system relocation in circuit switched fallback
US8964698B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8964698-B2 |
| Application number | US-201213549632-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 16, 2012 |
| Priority date | Apr 9, 2012 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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A method and mechanism to detect failure of an S102 link between an Evolved Packet Core, EPC, network based Mobility Management Entity, MME, and an Interworking System, IWS, in a Mobile Switching Center, MSC, pool deploying Circuit Switched Fallback, CSFB, for the EPC network. A heartbeat message exchange between an MME-IWS pair augments the current standards to provide a simple and direct method to monitor the application layer status of the S102 link between the EPC-based MME and the MSC pool-based IWS. Upon detecting a link failure, message flows can be quickly re-routed to another S102 link or MSC. Reverse use of an A21 Event Notification message from an IWS to MME, or a re-assigned IWS's delayed acknowledgement of an initial call-related message from an MME also augment the current standards to address IWS relocation related message-bouncing in MSC pool-based deployments of CSFB, thereby allowing efficient routing of messages.
First claim
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What is claimed is: 1. A method of detecting failure of a User Datagram Protocol (UDP) based S102 link having a first end point and a second end point, the S102 link connecting an Evolved Packet Core (EPC) based network and a Mobile Switching Center (MSC) pool deploying Circuit Switched Fallback (CSFB) for the EPC-based network, the method comprising the steps of: the first end point sending at least one first message to the second end point over the S102 link, wherein the first m…
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- What does patent US8964698B2 cover?
- A method and mechanism to detect failure of an S102 link between an Evolved Packet Core, EPC, network based Mobility Management Entity, MME, and an Interworking System, IWS, in a Mobile Switching Center, MSC, pool deploying Circuit Switched Fallback, CSFB, for the EPC network. A heartbeat message exchange between an MME-IWS pair augments the current standards to provide a simple and direct meth…
- Who is the assignee on this patent?
- Brombal David, Lo Chi, Ericsson Telefon Ab L M
- What technology area does this patent fall under?
- Primary CPC classification H04W76/18. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).