CDMA/EVDO virtualization

Patent metadata

Field	Value
Publication number	US-11696190-B2
Application number	US-202117183339-A
Country	US
Kind code	B2
Filing date	Feb 23, 2021
Priority date	Jan 27, 2017
Publication date	Jul 4, 2023
Grant date	Jul 4, 2023

Abstract

Systems and methods are disclosed for a CDMA base station management gateway for integrating CDMA into an LTE Evolved Packet Core (EPC) core network. In one embodiment, a system is disclosed, comprising: a base station management gateway situated between a code division multiple access (CDMA) base transceiver station (BTS) and an Evolved Packet Core (EPC) core network, the base station management gateway also situated between an additional base station and the EPC core network, the base station management gateway The method may further comprise: a stateful interworking proxy configured to perform interworking of CDMA signaling to Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (EUTRAN) signaling by using an S2a/S2b interface toward the EPC and an A10/A11 interface towards the CDMA BTS; and a packet routing virtual function configured to enable mobile devices attached to the CDMA BTS to obtain IP connectivity via the EPC core network.

First claim

The invention claimed is:

1. A system, comprising:
a base station management gateway situated between a code division multiple access (CDMA) base transceiver station (BTS) and an Evolved Packet Core (EPC) core network, the base station management gateway also situated between an additional base station and the EPC core network, the base station management gateway further comprising:
a stateful interworking proxy configured to perform interworking of CDMA signaling to Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (EUTRAN) signaling by using an S2a/S2b interface toward the EPC and an A10/A11 interface towards the CDMA BTS; and
a packet routing virtual network function configured to enable mobile devices attached to the CDMA BTS to obtain IP connectivity via the EPC core network by providing a packet data serving node (PDSN) interface to the CDMA BTS, and configured to also enable mobile devices attached to the additional base station to obtain IP connectivity via the EPC core network,
the packet routing virtual network function in communication with the stateful interworking proxy,
wherein the stateful interworking proxy and the packet routing virtual network function are configured to interwork CDMA protocols to Long Term Evolution (LTE) protocols for communicating with and requesting resources from the EPC core network.

2. The system of claim 1 , wherein CDMA is one or more of cdmaOne/IS-95, cdma2000, evolution data optimized (EVDO), evolution data and voice (EVDV), or Ultra Mobile Broadband.

3. The system of claim 1 , wherein the base station management gateway is further configured to communicate via a P1 interface towards an authentication, authorization, and accounting (AAA) server, and a P-H interface toward a home agent or home AAA server, on behalf of the mobile devices attached to the CDMA BTS.

4. The system of claim 1 , wherein the packet routing virtual network function is configured to terminate point-to-point (PPP) sessions with mobile devices attached to the CDMA BTS.

5. The system of claim 1 , wherein the packet routing virtual network function is configured to act as a mobile IP foreign agent for mobile devices attached to the CDMA BTS.

6. The system of claim 1 , wherein the base station management gateway further comprises a base station controller (BSC) and packet mobile switching center (MSC) virtual network function.

7. The system of claim 1 , wherein the base station management gateway further comprises a Session Initiation Protocol (SIP) proxy for connecting SIP protocol voice connections.

8. The system of claim 1 , wherein the SIP proxy acts as a SIP user agent (UA) on behalf of mobile users, performs SIP signaling towards an IP Mobility Subsystem (IMS) core network within the EPC core network, and performs interworking between CDMA and SIP signaling protocols.

9. The system of claim 1 , wherein the base station management gateway is configured to interact with the additional base station as a home nodeB gateway (HNBGW).

10. The system of claim 1 , wherein the base station management gateway is configured to terminate an encrypted connection with a CDMA mobile device, thereby providing a secure anchor point for the CDMA mobile device for connection to the EPC core network.

11. The system of claim 1 , wherein the base station management gateway is a virtualization gateway providing virtualization by using a single identifier towards the EPC core network for a plurality of eNodeBs, home NodeBs, or CDMA BTSes.

12. The system of claim 1 , wherein the base station management gateway is configured to perform inter-radio access technology steering of a session from a first radio access technology (RAT) to a second RAT, the first RAT being CDMA and the second RAT being one of 2G, 3G, 4G, 5G, and wireless local area networking (WLAN).

13. The system of claim 1 , wherein the base station management gateway is configured to provide one or more application-aware inter-radio access technology (inter-RAT) slices across CDMA, 3G, 4G, 5G, and wireless local area networking (WLAN) technologies, the inter-RAT slices being based on application-layer information gathered at the base station management gateway.

14. The system of claim 1 , wherein the base station management gateway is configured to provide handovers between the CDMA BTS and one or more of a 2G base station, a 3G base station, a 4G base station, a 5G base station, and a Wi-Fi access point.

Assignees

• Parallel Wireless Inc

Inventors

• Arora Jitender
• Agarwal Kaitki
• Mishra Rajesh Kumar
• Seshadri Arun

Classifications

• H04W36/0022 Primary

  for transferring data sessions between adjacent core network technologies · CPC title

• H04W92/02

  Inter-networking arrangements · CPC title

• H04B7/2628

  using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] (H04B7/2618 takes precedence) · CPC title

• H04W88/16

  Gateway arrangements · CPC title