US 10,542,471 B1Granted

Method and system for releasing at least one resource allocated to a user equipment device

AssigneeSprint Spectrum L.P.

InventorsSiddharth S. Oroskar, Maulik K. Shah, Ryan P. Dreiling

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Abstract

A method and system to help manage resources in a fallback scenario is disclosed. A first network may be configured to serve user equipment devices (UEs) according to a first protocol and a second network may be configured to serve UEs according to a second protocol. The method may involve the first network serving a UE, where serving the UE includes allocating at least one resource to the UE. The method may also involve, after the UE has transitioned from being served by the first network to being served by the second network for a circuit-switched-fallback call, (i) if the UE completes call setup, the first network releasing the resources, but (ii) if the UE does not complete call setup, the first network using the allocated resources to serve the UE after the UE transitions back to being served by the first network.

Claims18

Dependent claims

In a communication system comprising a first network configured to serve user equipment devices (UEs) according to a first air interface protocol and a second network configured to serve UEs according to a second air interface protocol, a method comprising:

the first network serving a UE, wherein the first network serving the UE comprises the first network allocating at least one resource to the UE;
the first network signaling to invoke setup of a circuit-switched-fallback (CSFB) call between the UE and a call destination via the second network, wherein the UE transitions from being served by the first network to being served by the second network;
and
after the UE has transitioned from being served by the first network to being served by the second network, (i) the first network initially maintaining for the UE the at least one resource allocated to the UE, (ii) the first network receiving from the second network a notification message indicating that setup of a call connection between the UE and the call destination via the second network is complete, and (iii) in response to receiving the notification message, the first network releasing the at least one resource allocated to the UE.

1 more element

the first network serving a UE, wherein the first network serving the UE comprises the first network allocating at least one resource to the UE;
the first network signaling to invoke setup of a circuit-switched-fallback (CSFB) call between the UE and a call destination via the second network, wherein the UE transitions from being served by the first network to being served by the second network;
and
after the UE has transitioned from being served by the first network to being served by the second network, (i) if the UE completes setup of a call connection between the UE and the call destination via the second network, the first network releasing the at least one resource in response to the UE completing setup of the call connection, but (ii) if the UE does not complete setup of a call connection between the UE and the call destination via the second network and the UE transitions from being served by the second network back to being served by the first network, the first network using the allocated at least one resource to serve the UE after the UE transitions back to being served by the first network,
wherein the first network releasing the at least one resource in response to the UE completing setup of the call connection comprises the first network releasing the at least one resource in response to receiving from the second network a notification message indicating that setup of a call connection between the UE and the call destination via the second network is complete.

2 more elements

Dependencies are inferred from the claim text.