METHOD AND APPARATUS FOR TRANSMITTING DATA IN A WIRELESS COMMUNICATION NETWORK SYSTEM

• US 20120276913A1
• Filed: 11/04/2010
• Published: 11/01/2012
• Est. Priority Date: 11/04/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Bae, Beom-sik, Lim, Chae-gwon, Cho, Sung-yean, Choi, Sung-ho, Kim, Sang-bum, Lim, Han-na
• Granted Patent: US 8,774,818 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 36/0038 of security context information
• CPC Class Codes: H04W 4/14 Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 76/32 Release of transport tunnels

Abstract

A method and an apparatus for transmitting data in a wireless communication network are provided. A base station having information of an idle mode user equipment transmits a connecting operation mode to the user equipment when the idle mode user equipment is connected to the base station. The user equipment transmits a small amount of data together with a connection request completion message to the base station. The base station transmits, over a network, the data received from the user equipment, without being interlinked with a mobility management entity, and the user equipment returns back to an idle operation mode after data transmission. Thus, the overhead required to support signaling of the base station for acquiring context information of the user equipment can be reduced in order to provide the user equipment with an efficient data transmission environment.

Claims

1. A method of transmitting data in a radio communication network, the method comprising:

transmitting, by an evolved-Node B (eNB), a radio resource connection setup message to a User Equipment (UE) when the UE that is in an idle mode accesses the eNB, and receiving data and a radio connection setup complete message from the UE in response to the radio resource connection setup message;

transmitting, by the eNB, the data received from the UE to a Mobility Management Entity (MME); and

receiving, by the eNB, a UE context release message from the MME, and releasing a Radio Resource Control (RRC) connection with the UE.

2. The method of claim 1, wherein

the radio connection setup complete message includes a Non-Access Stratum (NAS) message, and

the data is at least one of included in the NAS message and received with the NAS message.

3. A method of transmitting data in a radio communication network, the method comprising:

receiving, by a Mobility Management Entity (MME), a connection notification message associated with a User Equipment (UE) from an evolved-Node B (eNB) when the UE that is in an idle mode accesses the eNB;

transmitting, by the MME, data to a Service GateWay (S-GW) when the data transmitted from the UE is received with the connection notification message; and

transmitting, by the MME, a UE context release message to the eNB.

4. The method of claim 3, wherein:

the connection notification message includes a Non-Access Stratum (NAS) message, and

the data is at least one of included in the NAS message and received with the NAS message.

5. The method of claim 4, wherein the MME determines that the data transmitted from the UE is received when at least one of a form of the NAS message is for data transmission and an indicator indicating that the data is included in the NAS message is included in the NAS message.

6. The method of claim 3, wherein the transmitting of the data comprises:

transferring, by the MME, the data to the S-GW through use of a data transport message.

7. The method of claim 3, wherein the transmitting of the data comprises:

transferring, by the MME, the data to the S-GW through use of uplink information.

8. A radio communication system that transmits and receives data in a radio communication network, the system comprising:

an evolved-Node B (eNB) to receive a radio connection setup complete message including data from a User Equipment (UE) when a Radio Resource Control (RRC) connection is set up with the UE in response to a request from the UE that is in an idle mode, to transmit the data received from the UE to a Mobility Management Entity (MME), to receive a UE context release message from the MME, and to release the RRC connection with the UE; and

the MME to receive, from the eNB, a connection notification message associated with the UE, to transmit data to a Serving GatewWay (S-GW) when the data transmitted from the UE is received with the connection notification message, and to transmit the UE context release message.

9. The system of claim 8, wherein

the connection notification message includes a Non-Access Stratum (NAS) message, and

the data is at least one of included in the NAS message and received with the NAS message.

10. The system of claim 9, wherein the MME determines that the data transmitted from the UE is received when at least one of a form of the NAS message is for data transmission and an indicator indicating that the data is included in the NAS message is included in the NAS message.

11. The system of claim 8, wherein the MME transmits the data to the S-GW through use of at least one of a data transport message and uplink information.

12. A method of transmitting data in a radio communication network, the method comprising:

transmitting, by a Mobility Management Entity (MME) to a Serving GateWay (S-GW), a bearer create session request message including a data transport indicator that indicates that the MME is capable of directly transmitting data to a User Equipment (UE), in response to a connection request from the UE;

receiving, by the MME, a bearer create session response message from the S-GW, and transmitting context information of the UE to an evolved-Node B (eNB); and

receiving, by the MME, data to be transmitted to the UE from the S-GW when a bearer is released since the UE is switched into an idle mode, and transmitting the data to the UE.

13. The method of claim 12, wherein the bearer create session request message includes information associated with at least one of a size of a data packet and a number of data packets.

14. The method of claim 12, further comprising:

transmitting, by the MME, a paging message to the UE, and receiving a service request message from the UE,

wherein the MME transmits the data to the UE through use of the paging message.

15. A method of transmitting data in a radio communication network, the method comprising:

receiving, by a Serving GatewWay (S-GW) from a Mobility Management Entity (MME), a bearer create session request message including a data transport indicator indicating that the MME is capable of directly transmitting data to a User Equipment (UE), in response to a connection request from the UE, and registering, by the S-GW, whether the MME is capable of providing data transport support with respect to a bearer of the data;

transmitting, by the S-GW, the bearer create session request message to a Packet Data Network GatewWay (PDN-GW), receiving a bearer create session response message, and transmitting the bearer create session response message to the MME;

receiving, by the S-GW from the PDN-GW, data to be transmitted to the UE after the UE is switched into an idle mode and a bearer is released; and

determining, by the S-GW, that the MME is capable of directly transmitting the data to the UE, based on the data transport indicator, and transmitting the data to the MME.

16. The method of claim 15, wherein the bearer create session request message includes information associated with at least one of a size of a data packet and a number of data packets.

17. The method of claim 15, wherein the bearer create session request message received from the MME includes information associated with at least one of a size of a data packet and a number of data packets.

18. The method of claim 15, wherein the bearer create session response message received from the PDN-GW includes information associated with at least one of a size of a data packet and a number of data packets.

19. The method of claim 16, wherein the S-GW determines whether the MME is capable of directly transmitting the data to the UE, based on at least one of the size of the data packet and the number of data packets together with the data transport indicator.

20. The method of claim 15, wherein, when the MME is incapable of directly transmitting the data to the UE, the method further comprises:

buffering the data and transmitting a downlink data notification message to the MME.

21. A radio communication system that transmits and receives data in a radio communication network, the system comprising:

a Mobility Management Entity (MME) to transmit a bearer create session request message including a data transport indicator that indicates that the MME is capable of directly transmitting data to a User Equipment (UE), in response to a connection request from the UE, to receive a bearer create session response message, to transmit context information of the UE to an evolved-Node B (eNB), and to transmit data to the UE when the data to be transmitted to the UE is received after the UE is switched into an idle mode and a bearer is released; and

a Serving GatewWay (S-GW) to receive the bearer create session request message from the MME, to register whether the MME is capable of providing data transport support with respect to the bearer of the data, to transmit the bearer create session request message to a Packet Data Network GatewWay (PDN-GW), to receive a bearer create session response message, to determine that the MME is capable of directly transmitting data to the UE based on the data transport indicator when the data to be transmitted to the UE is received from the PDN-GW after the UE is switched into an idle mode and the bearer is released, and to transmit the data to the MME.

22. The system of claim 21, wherein the bearer create session request message includes information associated with at least one of a size of a data packet and a number of data packets.

23. The system of claim 21, wherein the MME transmits a paging message to the UE, receives a service request message from the UE, and transmits the data through use of the paging message.

24. The system of claim 21, wherein the bearer create session response message includes information associated with at least one of a size of a data packet and a number of data packets.

25. The system of claim 22, wherein the S-GW determines whether the MME is capable of directly transmitting the data to the UE, based on at least one of the size of the data packet and the number of data packets together with the data transport indicator.

26. The system of claim 21, wherein, when the MME is incapable of directly transmitting the data to the UE, the S-GW performs buffering of the data, and transmits a downlink data notification message to the MME.

27. A method of transmitting data in a radio communication network, the method comprising:

receiving, by a User Equipment (UE) from an evolved-Node B (eNB), information required for generating Access Stratum (AS) security information when the UE that is in an idle mode accesses the eNB;

generating, by the UE, a new AS security context based on the AS security information received from the eNB;

transmitting, by the UE, a connection request complete message and data based on the generated AS security context; and

switching, by the UE, into an idle mode.

28. The method of claim 27, wherein the information required for generating the AS security information received from the eNB corresponds to information associated with the UE, which the eNB stores by receiving from a network when the UE previously accesses the eNB.

29. The method of claim 27, wherein the transmitting of the data comprises:

transmitting an indicator, indicating that a size of the data is less than or equal to a predetermined size, with the data.

30. A method of transmitting data in a radio communication network, the method comprising:

transmitting, by an evolved-Node B (eNB), information required for generating Access Stratum (AS) security information for AS security with a User Equipment (UE) when the UE that is in an idle mode accesses the eNB;

receiving, by the eNB from the UE, a connection request complete message and data based on a new AS security context generated by the UE through use of AS security information received from the eNB; and

transmitting, by the eNB to a network, the data received from the UE based on uplink information stored in advance.

31. The method of claim 30, wherein the information required for generating the AS security information that the eNB transmits to the UE corresponds to information associated with the UE that the eNB stores by receiving from the network when the UE previously accesses the eNB.

32. The method of claim 30, wherein the receiving of the data comprises:

receiving an indicator, indicating that a size of the data is less than or equal to a predetermined size, with the data.

33. A radio communication system that transmits and receives data in a radio communication network, the system comprising:

a User Equipment (UE) to transmit a radio resource connection request message in an idle mode, to receive information required for generating Access Stratum (AS) security information so as to generate a new AS security context, to transmit an access request complete message and data based on the generated AS security context, and to switch into an idle mode; and

an evolved-Node B (eNB) to transmit the information required for generating the AS security information for AS security with the UE when the UE that is in an idle mode accesses the eNB, to receive the access request complete message and the data from the UE based on the new AS security context generated by the UE, and to transmit the data received from the UE to a network based on uplink information stored in advance.

34. The system of claim 33, wherein the information required for generating the AS security information that the eNB transmits to the UE corresponds to information associated with the UE that the eNB stores by receiving from the network when the UE previously accesses the eNB.

35. The system of claim 33, wherein the UE transmits, to the eNB, an indicator, indicating a size of the data is less than or equal to a predetermined size, with the data.

36. A method of transmitting data in a radio communication network, the method comprising:

receiving, by a User Equipment (UE) from an evolved-Node B (eNB), an indicator indicating that Access Stratum (AS) security information that is previously used for communication with the UE is to be reused, when the UE that is in an idle mode accesses the eNB;

transmitting, by the UE, a connection request complete message and data through use of a previously used AS security context based on the indicator received from the eNB; and

switching, by the UE, a mode into the idle mode.

37. The method of claim 36, wherein the received indicator indicating that the AS security information is to be reused corresponds to an indicator indicating that information associated with the UE, which the eNB stores by receiving from a network when the UE previously accesses the eNB, is to be reused.

38. The method of claim 36, wherein the transmitting of the data comprises:

transmitting an indicator indicating that a size of the data is less than or equal to a predetermined size, with the data.

39. A method of transmitting data in a radio communication network, the method comprising:

transmitting, by an evolved-Node B (eNB) to a User Equipment (UE), an indicator indicating that previously used Access Stratum (AS) security information is to be reused, when the UE that is in an idle mode accesses the eNB;

receiving, by the eNB from the UE, a connection request complete message and data based on an AS security context that is previously used for communication with the UE; and

transmitting, by the eNB to a network, the data received from the UE based on uplink information stored in advance.

40. The method of claim 39, wherein the indicator indicating that the AS security information is to be reused corresponds to an indicator indicating that information associated with the UE, which the eNB stores by receiving from the network when the UE previously accesses the eNB, is to be reused.

41. The method of claim 39, wherein the receiving of the data comprises:

receiving an indicator indicating that a size of the data is less than or equal to a predetermined size, with the data.

42. A radio communication system that transmits and receives data in a radio communication network, the system comprising:

a User Equipment (UE) to transmit a radio resource connection request message in an idle mode, to receive an indicator indicating that previously used Access Stratum (AS) security information is to be reused, to transmit a connection request complete message and data based on a previously used AS security context, and to switch into an idle mode; and

an evolved-Node B (eNB) to transmit the indicator indicating that the AS security information set for previous communication with the UE when the UE that is in an idle mode accesses the eNB, to receive the connection request complete message and data from the UE based on the previously used AS security context, and to transmit the data received from the UE to a network based on uplink information stored in advance.

43. The system of claim 42, wherein the indicator indicating that the AS security information is to be reused corresponds to an indicator indicating that information associated with the UE, which the eNB stores by receiving from the network when the UE previously accesses the eNB, is to be reused.

44. The system of claim 42, wherein the UE transmits an indicator, indicating that a size of the data is less than or equal to a predetermined size, with the data.

45. A method of transmitting data in a radio communication network, the method comprising:

receiving, by a User Equipment (UE) from an evolved-Node B (eNB), a radio resource connection setup message when the UE that is in an idle mode accesses the eNB;

transmitting, by the UE to the eNB, a radio connection setup complete message including data; and

receiving, by the UE, a context release message from the eNB that transmits the data to a network, and switching a mode into an idle mode.