DATA TRANSMISSION METHOD AND BASE STATION

• US 20170201959A1
• Filed: 01/06/2017
• Published: 07/13/2017
• Est. Priority Date: 01/12/2016
• Status: Active Grant

• Current Assignee: Spreadtrum Communications USA
• Original Assignee: Spreadtrum Communications USA
• Inventors: DENG, Yun
• Granted Patent: US 10,057,871 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

A data transmission method and a base station are provided. The method includes: setting up an RRC connection with a UE, and acquiring an information element for requesting C-SGN registration from a message transmitted by the UE during the setup of the RRC connection; transmitting an initial UE message to a connected C-SGN, wherein the C-SGN registers the UE based on the information element for requesting C-SGN registration contained in the initial UE message; after the UE registers to the C-SGN and data is received from the UE, transmitting the data to the C-SGN which then transmits the data to a destination address. By the method, signaling interaction during data transmission is reduced, which may improve efficiency of data transmission and reduce consumption of radio network resources.

Claims

1. A data transmission method, comprising:

setting up a Radio Resource Control (RRC) connection with a User Equipment (UE), and acquiring an information element for requesting Cellular IoT Serving Gateway Node (C-SGN) registration from a message transmitted by the UE during the setup of the RRC connection;

transmitting an initial UE message to a connected C-SGN, wherein the C-SGN registers the UE based on the information element for requesting C-SGN registration contained in the initial UE message; and

after the UE registers to the C-SGN and data is received from the UE, transmitting the data to the C-SGN which then transmits the data to a destination address.

2. The method according to claim 1, wherein setting up an RRC connection with a UE, and acquiring an information element for requesting C-SGN registration from a message transmitted by the UE during the setup of the RRC connection comprises:

after receiving an RRC connection request message from the UE, transmitting an RRC connection setup message to the UE; and

after receiving an RRC connection setup completion message from the UE, setting up an RRC connection with the UE, and acquiring the information element for requesting C-SGN registration based on at least one of the RRC connection request message and the RRC connection setup completion message.

3. The method according to claim 2, further comprising:

transmitting, to the UE, system information comprising an indication information element which indicates that registration to the C-SGN is supported, wherein the UE transmits the RRC connection request message based on the indication information element.

4. The method according to claim 3, wherein the indication information element is set according to different Public Land Mobile Network (PLMN) identifiers.

5. The method according to claim 2, wherein the information element for requesting C-SGN registration is represented by an RRC connection setup reason or a reserved vacant bit in the RRC connection request message.

6. The method according to claim 2, wherein the information element for requesting C-SGN registration is set in a Medium Access Control (MAC) Protocol Data Unit (PDU) which carries the RRC connection request message.

7. The method according to claim 2, wherein the information element for requesting C-SGN registration is represented by a newly added preset bit in the RRC connection setup completion message.

8. A data transmission method, comprising:

setting up a Radio Resource Control (RRC) connection with a User Equipment (UE), and acquiring an identifier information element of a registered Cellular IoT Serving Gateway Node (C-SGN) from a message transmitted by the UE during the setup of the RRC connection; and

after receiving data transmitted by the UE, transmitting the data to the registered C-SGN which then transmits the data to a destination address.

9. The method according to claim 8, wherein setting up an RRC connection with a UE, and acquiring an identifier information element of a registered C-SGN from a message transmitted by the UE during the setup of the RRC connection comprises:

after receiving an RRC connection request message from the UE, transmitting an RRC connection setup message to the UE; and

after receiving an RRC connection setup completion message from the UE, setting up an RRC connection with the UE, and acquiring the identifier information element of the registered C-SGN based on at least one of the RRC connection request message and the RRC connection setup completion message.

10. The method according to claim 9, further comprising:

transmitting, to the UE, system information comprising an indication information element which indicates that registration to the C-SGN is supported, wherein the UE transmits the RRC connection request message based on the indication information element.

11. The method according to claim 10, wherein the indication information element is set according to different Public Land Mobile Network (PLMN) identifiers.

12. The method according to claim 9, wherein the identifier information element of the registered C-SGN is represented by a newly added preset bit in the RRC connection request message or in the RRC connection setup completion message.

13. A base station, comprising:

a connection setting up circuitry configured to set up a Radio Resource Control (RRC) connection with a User Equipment (UE);

a first acquiring circuitry configured to acquire an information element for requesting Cellular IoT Serving Gateway Node (C-SGN) registration from a message transmitted by the UE during the setup of the RRC connection;

a first transmitting circuitry configured to transmit an initial UE message to a connected C-SGN, wherein the C-SGN registers the UE based on the information element for requesting C-SGN registration contained in the initial UE message;

a first receiving circuitry configured to receive data transmitted by the UE; and

a second transmitting circuitry configured to;

after the UE registers to the C-SGN and data is received from the UE, transmit the data to the C-SGN which then transmits the data to a destination address.

14. The base station according to claim 13, wherein the connection setting up circuitry comprises:

a first receiving sub-circuitry configured to receive an RRC connection request message from the UE;

a first transmitting sub-circuitry configured to transmit an RRC connection setup message to the UE after the RRC connection request message is received from the UE; and

a second receiving sub-circuitry configured to receive an RRC connection setup completion message from the UE, wherein an RRC connection is set up with the UE,

wherein the first acquiring circuitry configured to;

after the RRC connection setup completion message is received from the UE, acquire the information element for requesting C-SGN registration based on at least one of the RRC connection request message and the RRC connection setup completion message.

15. The base station according to claim 14, further comprising a fourth transmitting circuitry, configured to transmit, to the UE, system information comprising an indication information element which indicates that registration to the C-SGN is supported, wherein the UE transmits the RRC connection request message based on the indication information element.

16. The base station according to claim 15, wherein the indication information element transmitted by the fourth transmitting circuitry is set according to different Public Land Mobile Network (PLMN) identifiers.

17. The base station according to claim 14, wherein the information element for requesting C-SGN registration acquired by the first acquiring circuitry is represented by an RRC connection setup reason or a reserved vacant bit in the RRC connection request message.

18. The base station according to claim 14, wherein the information element for requesting C-SGN registration acquired by the first acquiring circuitry is set in a Medium Access Control (MAC) Protocol Data Unit (PDU) which carries the RRC connection request message.

19. The base station according to claim 14, wherein the information element for requesting C-SGN registration acquired by the first acquiring circuitry is represented by a newly added preset bit in the RRC connection setup completion message.

20. A base station, comprising:

a connection setting up circuitry configured to set up an Radio Resource Control (RRC) connection with a User Equipment (UE);

a second acquiring circuitry configured to acquire an identifier information element of a registered Cellular IoT Serving Gateway Node (C-SGN) from a message transmitted by the UE during the setup of the RRC connection

a first receiving circuitry configured to receive data transmitted by the UE; and

a third transmitting circuitry configured to;

after the data is received from the UE, transmit the data to the registered C-SGN which then transmits the data to a destination address.

21. The base station according to claim 20, wherein the connection setting up circuitry comprises:

a first receiving sub-circuitry configured to receive an RRC connection request message from the UE;

a first transmitting sub-circuitry configured to transmit an RRC connection setup message to the UE after the RRC connection request message is received from the UE; and

a second receiving sub-circuitry configured to receive an RRC connection setup completion message from the UE, wherein an RRC connection is set up with the UE,

wherein the second acquiring circuitry configured to;

after the RRC connection setup completion message is received from the UE, acquire the identifier information element of the registered C-SGN based on at least one of the RRC connection request message and the RRC connection setup completion message.

22. The base station according to claim 21, further comprising a fourth transmitting circuitry, configured to transmit, to the UE, system information comprising an indication information element which indicates that registration to the C-SGN is supported, wherein the UE transmits the RRC connection request message based on the indication information element.

23. The base station according to claim 22, wherein the indication information element transmitted by the fourth transmitting circuitry is set according to different Public Land Mobile Network (PLMN) identifiers.

24. The base station according to claim 21, wherein the identifier information element of the registered C-SGN acquired by the second acquiring circuitry is represented by a newly added preset bit in the RRC connection request message or in the RRC connection setup completion message.