US 9,521,528 B1Granted

Non-duplication of message delivery in a short message service

AssigneeAmazon Technologies, Inc.

InventorsSanjeev Gupta, Latha Srinivasan, Nupur Rastogi, Kiran Kumar Edara

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Abstract

Sending short message service (SMS) messages and receiving a response report based at least in part on the sent SMS message, even if a communicative connection with the mobile communications network had been severed, so that duplication of the SMS message is avoided is disclosed. In this case, a communicative connection may be re-established and used to receive an acknowledgment from the mobile communications network and subsequently send another acknowledgement to the mobile communications network. The UE may also be configured to send an information element to the one or more elements of the mobile communications network to indicate that a communicative connection with the network is to remain established so that acknowledgements may be reconciled between the UE and the network. Additionally, the mobile communications network may be configured to transmit the SMS message only after receiving the acknowledgement from the UE, to avoid sending duplicate SMS messages.

Claims18

Dependent claims

A mobile device, comprising:

a transceiver configured to communicate with a base station of a long term evolution (LTE) network;
at least one memory that stores computer-executable instructions;
at least one processor that accesses the at least one memory and operationally coupled to the transceiver, wherein the at least one processor is configured to:
send a first service request to the base station via the transceiver, wherein transmitting the first service request establishes a first non-access stratum (NAS) communications connection with a mobile management entity (MME) of the LTE network;
send, via the transceiver and using the first NAS communications connection, a short message service (SMS) message;
measure an amount of time elapsed from when the SMS message was sent;
determine that the first NAS communications connection has been disconnected prior to receiving a first acknowledgment message from the MME responsive to the SMS message;
identify that the amount of time is less than a threshold amount of elapsed time;
receive a page from the MME indicating that the first acknowledgement message is to be received by the mobile device;
send a second service request to the base station via the transceiver, wherein transmitting the second service request establishes a second NAS communications connection with the MME;
receive the first acknowledgment message indicating receipt of the SMS message, wherein receiving the first acknowledgement message further indicates that the SMS message was received by a mobile communications network device in an error-free state;
and
send, via the transceiver and using the second NAS communication connection, a second acknowledgement message to the MME after receiving the first acknowledgment message.

10 more elements

Dependencies are inferred from the claim text.