APPARATUSES AND METHODS FOR PROVIDING EMERGENCY SERVICE IN A WIRELESS COMMUNICATION SYSTEM

• US 20090268700A1
• Filed: 04/24/2009
• Published: 10/29/2009
• Est. Priority Date: 04/25/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: PARK, Young-Bae, RYOU, Sang-Kyou, CHANG, Sunny, KANG, Hyun-Jeong, SON, Yeong-Moon, KIM, Ki-Back
• Granted Patent: US 8,897,305 B2
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 68/025 Indirect paging
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

Apparatuses and methods for providing an emergency service in a wireless communication system are provided. The method includes allocating a Connection IDentifier (CID) used to transmit the emergency service message, determining a Convergence Sublayer (CS) type for processing the emergency service message, generating a Downlink Channel Descriptor (DCD) message which comprises at least one of the allocated CID and information relating to the determined CS type, and transmitting the generated DCD message to a Mobile Station (MS).

Claims

1. A method for transmitting an emergency service message at a Base Station (BS) in a wireless communication system, the method comprising:

allocating a Connection IDentifier (CID) used to transmit an emergency service message;

determining a Convergence Sublayer (CS) type for processing the emergency service message;

generating a Downlink Channel Descriptor (DCD) message which comprises at least one of the allocated CID and information relating to the determined CS type; and

transmitting the generated DCD message to a Mobile Station (MS).

2. The method of claim 1, wherein, when the CS type for processing the emergency service message comprises a default CS type, the generated DCD message comprises only the allocated CID.

3. The method of claim 1, wherein the DCD message further comprises information relating to a priority of the emergency service message.

4. The method of claim 1, further comprising:

transmitting the emergency service message comprising the allocated CID to the MS.

5. A method for transmitting an emergency service message at a Base Station (BS) in a wireless communication system, the method comprising:

determining a transmission time of an emergency service message;

determining a waiting time for a Mobile Station (MS) to receive the emergency service message at the determined transmission time;

generating a broadcast control pointer Information Element (IE) which comprises information relating to the transmission time of the emergency service message and the waiting time to receive the emergency service message; and

transmitting a DownLink (DL)-MAP message comprising the generated broadcast control pointer IE to the MS.

6. The method of claim 5, wherein the broadcast control pointer IE further comprises information relating to a type of a message to be transmitted at the determined transmission time.

7. The method of claim 5, further comprising:

transmitting the emergency service message to the MS at the determined transmission time.

8. A method for transmitting an emergency service message at a Base Station (BS) in a wireless communication system, the method comprising:

determining whether there exists an emergency service message to transmit in a Multicast and Broadcast Service (MBS) region;

setting a field in an MBS_MAP Information Element (IE) according to the determination, the field indicative of the presence or absence of the emergency service message to be transmitted in the MBS region; and

transmitting a DownLink (DL)-MAP message comprising the MBS_MAP IE with the set field to the MS.

9. The method of claim 8, further comprising:

transmitting the emergency service message in the MBS region.

10. The method of claim 9, wherein the emergency service message comprises a Multicast Connection IDentifier (MCID) pre-allocated for the transmission of the emergency service message.

11. A method for receiving an emergency service message at a Mobile Station (MS) in a wireless communication system, the method comprising:

receiving a Downlink Channel Descriptor (DCD) message which comprises at least one of a Connection IDentifier (CID) used to transmit the emergency service message and information relating to a type of a Convergence Sublayer (CS) for processing the emergency service message; and

when receiving the emergency service message comprising the CID, processing the received emergency service message through the CS.

12. The method of claim 11, wherein the processing of the received emergency service message through the CS comprises processing the received emergency service message through a default CS when the DCD message does not comprise the information relating to the CS type for processing the emergency service message.

13. The method of claim 11, wherein the DCD message further comprises information relating to a priority of the emergency service message.

14. A method for receiving an emergency service message at a Mobile Station (MS) in a wireless communication system, the method comprising:

receiving a broadcast control pointer Information Element (IE) through a DownLink (DL)-MAP message;

acquiring a transmission time of the emergency service message and information relating to a waiting time for the MS to receive the emergency service message at the transmission time using the received broadcast control pointer IE; and

receiving the emergency service message during the waiting time at the transmission time of the emergency service message.

15. The method of claim 14, wherein the broadcast control pointer IE further comprises information relating to a type of a message to be transmitted at the transmission time.

16. A method for receiving an emergency service message at a Mobile Station (MS) in a wireless communication system, the method comprising:

receiving a Multicast and Broadcast Service (MBS)_MAP Information Element (IE) through a DownLink (DL)-MAP message;

confirming setting of a field in the received MBS_MAP IE, the field indicative of the presence or absence of the emergency service message to be transmitted in an MBS region; and

when the field setting indicates the existence of the emergency service message to transmit in the MBS region, decoding an MBS MAP message.

17. The method of claim 16, further comprising:

acquiring allocation information of a corresponding MBS burst by decoding the MBS MAP message; and

decoding the MBS burst in the MBS region using the acquired allocation information and receiving the emergency service message.

18. The method of claim 17, wherein the MBS burst comprises a Multicast Connection IDentifier (MCID) pre-allocated for the transmission of the emergency service message.

19. An apparatus for transmitting an emergency service message of a Base Station (BS) in a wireless communication system, the apparatus comprising:

a Media Access Control (MAC) control message generator for allocating a Connection IDentifier (CID) used to transmit the emergency service message, for determining a Convergence Sublayer (CS) type for processing the emergency service message, and for generating a Downlink Channel Descriptor (DCD) message which comprises at least one of the allocated CID and information relating to the determined CS type; and

a transmitter for transmitting the generated DCD message to a Mobile Station (MS).

20. The apparatus of claim 19, further comprising:

a transmit data queue for generating the emergency service message,

wherein the transmitter transmits the emergency service message comprising the allocated CID to the MS.

21. The apparatus of claim 19, wherein the MAC control message generator determines a transmission time of the emergency service message, determines a waiting time for the MS to receive the emergency service message at the determined transmission time, generates a broadcast control pointer Information Element (IE) which comprises information relating to the transmission time of the emergency service message and the waiting time to receive the emergency service message, and generates a DownLink (DL)-MAP message comprising the generated broadcast control pointer IE, and

the transmitter transmits the generated DL-MAP message to the MS and transmits the emergency service message to the MS at the determined transmission time.

22. The apparatus of claim 21, wherein the broadcast control pointer IE further comprises information relating to a type of a message to be transmitted at the determined transmission time.

23. The apparatus of claim 19, wherein the MAC control message generator determines whether there exists an emergency service message to transmit in a Multicast and Broadcast Service (MBS) region, sets a field in an MBS_MAP IE according to the determination, the field indicative of the presence or absence of the emergency service message to be transmitted in the MBS region, and generates a DL-MAP message comprising the MBS_MAP IE with the set field, and

the transmitter transmits the generated DL-MAP message to the MS and transmits the emergency service message to the MS over the MBS region.

24. An apparatus for receiving an emergency service message of a Mobile Station (MS) in a wireless communication system, the apparatus comprising:

a receiver for receiving a signal;

a physical layer decoder for providing a Media Access Control (MAC) Protocol Data Unit (PDU) by decoding the received signal in a physical layer;

a MAC PDU decoder for analyzing a header of the MAC PDU, for providing a corresponding payload to a MAC control message analyzer when a payload of the MAC PDU comprises control information, and for providing a corresponding payload to a receive data queue when the payload of the MAC PDU comprises traffic;

the MAC control message analyzer for acquiring at least one of a Connection IDentifier (CID) used to transmit the emergency service message and information relating to a type of a Convergence Sublayer (CS) for processing the emergency service message by analyzing a Downlink Channel Descriptor (DCD) message from the MAC PDU decoder; and

the receive data queue for providing the emergency service message from the MAC PDU decoder to a corresponding CS.

25. The apparatus of claim 24, wherein the MAC control message analyzer acquires a transmission time of the emergency service message and information relating to a waiting time for the MS to receive the emergency service message at the transmission time by analyzing a broadcast control pointer Information Element (TE) in a DownLink (DL)-MAP message from the MAC PDU decoder, and

the MAC PDU decoder provides the emergency service message received during the waiting time at the transmission time of the emergency service message, to the receive data queue.

26. The apparatus of claim 25, wherein the broadcast control pointer IE further comprises information relating to a type of a message to be transmitted at the transmission time.

27. The apparatus of claim 24, wherein the MAC control message analyzer confirms setting of a field in a Multicast and Broadcast Service (MBS)_MAP IE of the DL-MAP message from the MAC PDU decoder and acquires allocation information of a corresponding MBS burst by decoding the MBS MAP message when the field setting indicates existence of the emergency service message to transmit in an MBS region, the field indicative of the presence or absence of the emergency service message to be transmitted in the MBS region, and

the MAC PDU decoder extracts the emergency service message by decoding the MBS burst in the MBS region using the acquired allocation information and provides the extracted emergency service message to the receive data queue.