Apparatuses and methods for providing emergency service in a wireless communication system

• US 8,897,305 B2
• Filed: 04/24/2009
• Issued: 11/25/2014
• Est. Priority Date: 04/25/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Son, Yeong-Moon, Kang, Hyun-Jeong, Kim, Ki-Back, Park, Young-Bae, Chang, Sunny, Ryou, Sang-Kyou
• Primary Examiner(s): SHIVERS, ASHLEY L
• Application Number:
  US12/429,708
• Publication Number:
  US 20090268700A1
• Time in Patent Office: 2,041 Days
• Field of Search: None
• US Class Current: 370/395.21
• 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 information at a base station (BS) in a wireless communication system, the method comprising:

allocating a connection identifier (CID) used to transmit the emergency service information;

determining a convergence sublayer (CS) type for processing the emergency service information;

generating a control message comprising the allocated CID, and information relating to the determined CS type; and

transmitting the control message to a mobile station (MS),

wherein the control message comprises a downlink channel descriptor (DCD) message.

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

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

4. The method of claim 1, further comprising:

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

5. A method for transmitting an emergency service information at a base station (BS) in a wireless communication system, the method comprising:

determining a transmission time of an emergency service information;

determining a waiting time for a mobile station (MS) to receive the emergency service information 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 information and the waiting time to receive the emergency service information; 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 information to the MS at the determined transmission time.

8. A method for transmitting an emergency service information at a base station (BS) in a wireless communication system, the method comprising:

determining whether there exists the emergency service information 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 information to be transmitted in the MBS region;

when it is determined that the emergency service information exists, determining a transmission time of the emergency service information and a waiting time for a mobile station (MS) to receive the emergency service information 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 information and the waiting time to receive the emergency service information; and

transmitting a downlink (DL)-MAP message comprising the MBS_MAP IE with the set field or the broadcast control pointer IE to the MS.

9. The method of claim 8, further comprising:

transmitting the emergency service information in the MBS region at the determined transmission time.

10. The method of claim 9, wherein the emergency service information comprises a multicast connection identifier (MCID) pre-allocated for the transmission of the emergency service information.

11. A method for receiving an emergency service information at a mobile station (MS) in a wireless communication system, the method comprising:

receiving a downlink channel descriptor (DCD) message which comprises a connection identifier (CID) used to transmit the emergency service information, and information relating to a type of a convergence sublayer (CS) for processing the emergency service information; and

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

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

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

14. A method for receiving an emergency service information 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 information and information relating to a waiting time for the MS to receive the emergency service information at the transmission time using the received broadcast control pointer IE; and

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

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 information at a mobile station (MS) in a wireless communication system, the method comprising:

receiving a broadcast control pointer (IE) or a multicast and broadcast service (MBS)_MAP 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 information to be transmitted in an MBS region;

acquiring a transmission time of the emergency service information to receive the emergency service information at the transmission time using the received broadcast control pointer IE;

acquiring a waiting time for the MS to receive the emergency service information at the determined transmission time; and

when the field setting indicates the existence of the emergency service information 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 information.

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 information.

19. An apparatus for transmitting an emergency service information of a base station (BS) in a wireless communication system, the apparatus comprising:

a media access control (MAC) control message generator configured to allocate a connection identifier (CID) used to transmit the emergency service information, to determine a convergence sublayer (CS) type for processing the emergency service information, and to generate a control message comprising the allocated CID, and information relating to the determined CS type; and

a transmitter configured to transmit the control message to a mobile station (MS),

wherein the control message comprises a downlink channel descriptor (DCD) message.

20. The apparatus of claim 19,

wherein the transmitter is further configured to transmit the emergency service information comprising the allocated CID to the MS

wherein the control message further comprises information relating to a priority of the emergency service information.

21. The apparatus of claim 19, wherein the MAC control message generator determines a transmission time of the emergency service information, determines a waiting time for the MS to receive the emergency service information 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 information and the waiting time to receive the emergency service information, 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 information 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 information 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 information 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 information to the MS over the MBS region.

24. An apparatus for receiving an emergency service information 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 a connection identifier (CID) used to transmit the emergency service information, and information relating to a type of a convergence sublayer (CS) for processing the emergency service information by analyzing a downlink channel descriptor (DCD) message from the MAC PDU decoder; and

the receive data queue for providing the emergency service information 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 information and information relating to a waiting time for the MS to receive the emergency service information at the transmission time by analyzing a broadcast control pointer information element (IE) in a downlink (DL)-MAP message from the MAC PDU decoder, and

the MAC PDU decoder provides the emergency service information received during the waiting time at the transmission time of the emergency service information, 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 information to transmit in an MBS region, the field indicative of the presence or absence of the emergency service information to be transmitted in the MBS region, and

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