US-20260129617-A1 - MOBILE TERMINATED EARLY DATA TRANSMISSION FOR INTERNET OF THINGS

Abstract

Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of Mobile Terminated Early Data Transmission (MT-EDT) for Internet of Things (IoT). The method comprises in response to detecting, at a first device, a paging from a second device for a MT-EDT, sending, to the second device, a paging response at least comprising authentication information negotiated between the first device and a third device for a verification at the second device; and receiving data transmission from the second device. In this way, the performance and efficiency of the MT-EDT in the S&F mode can be improved significantly.

Inventors

• Srinivasan Selvaganapathy
• Mads LAURIDSEN
• Jeroen Wigard
• Ping Yuan
• Xiang Xu

Assignees

• NOKIA TECHNOLOGIES OY

Dates

Publication Date

20260507

Application Date

20220927

Claims (20)

1. 1 . A first device comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first device at least to: in response to detecting, from a second device, a paging for a mobile terminated early data transmission, send, to the second device, a paging response at least comprising authentication information negotiated between the first device and a third device for a verification at the second device; and receive data transmission from the second device.
2. 2 . The first device of claim 1 , wherein the first device is further caused to: negotiate the paging response for the mobile terminated early data transmission with the third device, the authentication information being included in the paging response.
3. 3 . The first device of claim 1 , wherein respective paging responses with different fields are negotiated between the first device and the third device for a plurality of successive mobile terminated early data transmissions, and wherein the different fields are used for the plurality of successive mobile terminated early data transmissions in order.
4. 4 . The first device of claim 1 , wherein the first device is caused to: receive the data transmission from the second device via the mobile terminated early data transmission or a radio resource control connection.
5. 5 . The first device of claim 1 , wherein the paging response is sent from the first device to the second device via a message 3 in a random access procedure or a radio resource control signaling.
6. 6 . The first device of claim 1 , wherein the first device comprises a terminal device, the second device comprises a radio access network device and the third device comprises a core network device, and wherein the terminal device, the radio access network device and the core network device operate in a store and forward mode.
7. 7 . A second device comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second device at least to: initiate a paging procedure for a mobile terminated early data transmission; in response to receiving, from a first device, a paging response at least comprising authentication information, verify a validity of the paging response based on expected paging response related information for the mobile terminated early data transmission received from a third device; and in response to determining that the paging response is valid, perform the data transmission to the first device.
8. 8 . The second device of claim 7 , wherein the second device is further caused to: verify the validity of the paging response for an authentication of the first device.
9. 9 . The second device of claim 7 , wherein the second device is further caused to: obtain, from a third device, the expected paging response related information, the expected paging response related information comprising at least one of the following: a downlink non-access-stratum transport message, an expected paging response, or a validity timer for a connectivity of the first device, or a validity timer for a lifetime of the expected paging response.
10. 10 . The second device of claim 9 , wherein the expected paging response related information is obtained via a control message.
11. 11 . The second device of claim 9 , wherein the second device is further caused to: in response to that a field included in the paging response received from the first device matches the expected paging response, determine that the paging response is valid.
12. 12 . The second device of claim 9 , wherein the second device is further caused to: in response to that the validity timer has not expired, determine that the paging response is valid.
13. 13 . The second device of claim 7 , wherein the second device is further caused to: in accordance with a determination that an indication, that the first device is to be served by the second device, is received from the third device, send, to the third device, a request of the expected paging response related information, the request comprising at least one of the following: the number of packets to be transmitted, a reference cell identification, or an authentication information fetching request.
14. 14 . The second device of claim 13 , wherein the request is sent via a control message.
15. 15 . The second device of claim 7 , wherein the second device is further caused to: perform the data transmission via the mobile terminated early data transmission or a radio resource control connection.
16. 16 . The second device of claim 7 , wherein the first device comprises a terminal device, the second device comprises a radio access network device and the third device comprises a core network device, and wherein the terminal device, the radio access network device and the core network device operate in a store and forward mode.
17. 17 . A third device comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the third device at least to: generate expected paging response related information based on a paging response for a mobile terminated early data transmission at least comprising authentication information negotiated between a first device and the third device for a verification at a second device.
18. 18 . The third device of claim 17 , wherein the expected paging response related information comprises at least one of the following: a downlink non-access-stratum transport message, an expected paging response, or a validity timer for a connectivity of the first device, or a validity timer for a lifetime of the expected paging response.
19. 19 . The third device of claim 17 , wherein the third device is caused to: in response to receiving, from a second device, a request of the expected paging response related information, provide the expected paging response related information to the second device.
20. 20 . The third device of claim 19 , wherein the request of the expected paging response related information, the request comprising at least one of the following: the number of packets to be transmitted, a reference cell identification, or an authentication information fetching request.

Description

FIELD Embodiments of the present disclosure generally relate to the field of telecommunication and in particular to devices, methods, apparatuses and computer readable storage media of Mobile Terminated Early Data Transmission (MT-EDT) for Internet of Things (IoT). BACKGROUND The Third Generation Partnership Project (3GPP) has initiated a study item on the support of the Narrow Band Internet of Things (NB-IoT), especially for a Non-Terrestrial Networks (NTN) scenario. It is to be expected that this study item will be further developed. SUMMARY In general, example embodiments of the present disclosure provide a solution of MT-EDT for IoT. In a first aspect, there is provided a first device. The first device comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first device at least to in response to detecting, from a second device, a paging for a MT-EDT, send, to the second device, a paging response at least comprising authentication information negotiated between the first device and a third device for a verification at the second device; and receive data transmission from the second device. In a second aspect, there is provided a second device. The second device comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second device at least to initiate a paging procedure for a MT-EDT; in response to receiving, from a first device, a paging response at least comprising authentication information, verify a validity of the paging response based on expected paging response related information for the MT-EDT received from a third device; and in response to determining that the paging response is valid, perform the data transmission to the first device. In a third aspect, there is provided a third device. The third device comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the third device at least to generate expected paging response related information based on a paging response for a MT-EDT at least comprising authentication information negotiated between a first device and the third device for a verification at a second device. In a fourth aspect, there is provide a method. The method comprises in response to detecting, at a first device and from a second device, a paging for a MT-EDT, sending, to the second device, a paging response at least comprising authentication information negotiated between the first device and a third device for a verification at the second device; and receiving data transmission from the second device. In a fifth aspect, there is provide a method. The method comprises initiating, from a second device, a paging procedure for a MT-EDT; in response to receiving, from a first device, a paging response at least comprising authentication information, verifying a validity of the paging response based on expected paging response related information for the MT-EDT received from a third device; and in response to determining that the paging response is valid, performing the data transmission to the first device. In a sixth aspect, there is provide a method. The method comprises generating, at a third device, expected paging response related information based on a paging response for a MT-EDT at least comprising authentication information negotiated between a first device and the third device for a verification at a second device. In a seventh aspect, there is provided an apparatus comprising means for, in response to detecting, from a second device, a paging for a MT-EDT, sending, to the second device, a paging response at least comprising authentication information negotiated between the first device and a third device for a verification at the second device; and means for receiving data transmission from the second device. In an eighth aspect, there is provided an apparatus comprising means for initiating a paging procedure for a MT-EDT; means for, in response to receiving, from a first device, a paging response at least comprising authentication information, verifying a validity of the paging response based on expected paging response related information for the MT-EDT received from a third device; and means for, in response to determining that the paging response is valid, performing the data transmission to the first device. In a ninth aspect, there is provided an apparatus comprising means for generating expected paging response related information based on a paging response for a MT-EDT at least comprising authentication information negotiated between a first device and the third device for a verification at a second device. In a tenth aspect, there is provided a computer readable medium having a computer program stored thereon which, when executed by at least one processor of a device, causes the device to carry out the method accordin