Scalable transmission or device trigger requests
Systems and methods for scalable triggering of machine type communication (MTC) devices are disclosed. One method comprises receiving for a selected period of time, at an MTC inter working function (IWF) module, a plurality of device trigger messages that are sent from a plurality of MTC servers. The plurality of device trigger messages are aggregated at the MTC IWF. A mobility management entity (MME) or Serving General Packet Radio Service (GPRS) Support Node (SGSN) for each device trigger message is identified. The aggregated device trigger messages are then sent to the identified MME or SGSN associated with each device trigger message to enable the identified MME SGSN to send the device trigger messages to a radio access network for transmission to the MTC devices.
1. A scalable triggering mechanism for machine type communication (MTC) devices, comprising:
a trigger aggregation module (TAM) configured to operate on a radio system fixed network interface, wherein the TAM is configured to:
receive an aggregate device trigger message containing a plurality of MTC device trigger messages and a user equipment (UE) identity for each MTC device trigger message; and
communicate a paging message to at least one radio access network (RAN) with a list of the UE identities contained in the aggregate device trigger message to enable the RAN to communicate a paging message with a list of paging records to each identified UE.
2. The scalable triggering mechanism of claim 1 , wherein the radio system fixed network interface is at least one of a mobility management entity (MME) and a Serving General Packet Radio Service (GPRS) Support Node (SGSN).
3. The scalable triggering mechanism of claim 1 , wherein the TAM is configured to receive a service request from at least one identified UE that receives the paging message and communicate a device trigger acknowledgement to an MTC server that sent the MTC device trigger for the at least one identified UE.
4. The scalable triggering mechanism of claim 1 , wherein the TAM is further configured to receive at least one single MTC device trigger message and aggregate the at least one single MTC device trigger message with other single MTC device trigger messages or with the aggregate device trigger message.
5. The scalable triggering mechanism of claim 1 , wherein the TAM is further configured to:
sort the list of the UE identities into tracking areas; and
communicate the paging message, wherein the paging message includes a list of UE identities belonging to a same tracking area.
6. The scalable triggering mechanism of claim 1 , wherein the TAM is further configured to:
communicate the paging message, wherein the paging message includes a list of UE identities and a list of tracking areas that each identified UE belongs to.
7. The method of claim 1 , further comprising grouping the trigger device messages at the MTC IWF based on a destination MME or SGSN of each trigger device message.
8. The method of claim 1 , further comprising sending, from the MTC-IWF a device trigger delivery request to the identified MME or SGSN for each trigger device message, wherein the device trigger delivery request includes an international mobile subscriber identity (IMSI) used to identify each MTC device.
9. The method of claim 1 , further comprising:
receiving, at the MME or SGSN, at least two aggregated device trigger messages;
de-aggregating the at least two aggregated device trigger messages to form a plurality of device trigger messages; and
re-aggregating the plurality of device trigger messages based a tracking area of each device trigger message to enable the re-aggregated device trigger message to be communicated in a single paging message.
10. A non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement the method for scalable triggering of machine type communication (MTC) devices, comprising:
receiving an aggregate trigger message at a radio system-fixed network interface, wherein the aggregate trigger message contains a plurality of MTC device trigger messages and a user equipment (UE) identity for each MTC device trigger message; and
communicating a paging message from the radio system-fixed network interface to at least one radio access network (RAN) with a list of the UE identities contained in the aggregate device trigger message to enable the RAN to communicate a paging message with a list of paging records to each identified UE.
11. The method of claim 10 , further comprising receiving the aggregate trigger message at the radio system-fixed network interface, wherein the radio system-fixed network interface is at least one of a mobility management entity (MME) and a Serving General Packet Radio Service (GPRS) Support Node (SGSN).
12. The method of claim 10 , wherein receiving the aggregate trigger message further comprises receiving the aggregate trigger message from an MTC inter working function (IWF), wherein the IWF is configured to:
receive an external device identification (ID) associated with each device trigger message;
send a query to a home location register (HLR) on a home subscriber server (HSS) for the external device ID;
receive, at the MTC IWF, an international mobile subscriber identity (IMSI) based on the external device ID from the HSS; and
send the IMSI for each device trigger message in the aggregate trigger message to the radio system-fixed network interface.
13. The method of claim 10 , further comprising receiving a service request from at least one identified UE that receives the paging message and communicating a device trigger delivery response to an MTC server that sent the MTC device trigger for the at least one identified UE.
14. The method of claim 10 , further comprising:
sorting the list of the UE identities into tracking areas; and
communicating the paging message from the radio system-fixed network interface to the RAN, wherein the paging message includes a list of UE identities belonging to a same tracking area to enable the RAN to send the paging records to UEs in a selected tracking area.
15. The method of claim 10 , further comprising communicating the paging message from the radio system-fixed network interface to the RAN, wherein the paging message includes a list of UE identities and a list of tracking areas to which each identified UE belongs to, to enable the RAN to send the paging records to each identified UE in a tracking area to which the UE is located.
16. The method of claim 10 , further comprising sending the paging message, wherein the paging message includes a single tracking area to which the UE identities contained in the aggregate device trigger message belong.
17. The method of claim 10 , further comprising sending the paging message, wherein the paging message includes the list of UE identities and a list of tracking areas in which each UE in the list of UE identifies belongs.