Method for paging user equipment over dedicated channel in mobile communication system for supporting multimedia broadcast/multicast service MBMS

• US 20050111395A1
• Filed: 08/23/2004
• Published: 05/26/2005
• Est. Priority Date: 08/22/2003
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Sung-Ho, Hwang, Sung-Oh, Lee, Kook-Heui
• Application Number:
  US10/924,328
• Publication Number:
  US 20050111395A1
• Time in Patent Office: Days
• US Class Current: 370/313
• CPC Class Codes: H04L 12/1877 Measures taken prior to transmission
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

A method for paging a UE (User Equipment) over a dedicated channel in a mobile communication system for supporting a Multimedia Broadcast/Multicast Service (MBMS). The paging method can indicate the presence or absence of control information associated with the MBMS during a call-connection mode established over a dedicated channel in a Code Division Multiple Access (CDMA) communication system. If a Serving Radio Network Controller (SRNC) for supporting the MBMS recognizes the beginning of the MBMS in which the UE is joined, it requests from a transmission mode needed for the MBMS from one or more CRNCs (Control Radio Network Controllers) controlling a plurality of cells communicating with the UE, such that it acquires MBMS control channel (MCCH) information including control information for supporting the MBMS. Then, the SRNC transmits a paging message including the MCCH information to the UE over a dedicated channel.

Claims

1. A method for paging a User Equipment (UE) in a mobile communication system for supporting an MBMS (Multimedia Broadcast/Multicast Service), comprising the steps of:

requesting a transmission mode in response to the MBMS from at least one CRNC (Control Radio Network Controller) controlling a plurality of cells communicating with the UE, when an SRNC (Serving Radio Network Controller) for supporting the MBMS recognizes the beginning of the MBMS in which the UE is joined;

receiving MCCH (MBMS control channel) information including control information adapted to support the MBMS according to the requested result; and

transmitting a paging message including the MCCH information to the UE over a dedicated channel (DCH).

2. The method according to claim 1, wherein the paging message further includes an MBMS ID (Identifier) indicative of the MBMS and a cell ID indicative of a cell which will receive the MBMS.

3. The method according to claim 1, further comprising the step of:

controlling the UE having received the paging message to receive control channel information from the CRNC, establishing a Radio Bearer (RB) for receiving the MBMS, and receiving the MBMS data using the established RB.

4. The method according to claim 1, further comprising the step of:

controlling the UE having received the paging message including the cell ID to receive control channel information transmitted from the CRNC from the cell, establishing a Radio Bearer (RB) for reception of the MBMS, and receiving the MBMS data using the established RB.

5. A method for controlling an SRNC (Serving Radio Network Controller) providing an MBMS (Multimedia Broadcast/Multicast Service) to page a User Equipment (UE) in a mobile communication system for supporting the MBMS, comprising the steps of:

requesting a transmission mode in response to the MBMS from at least one CRNC (Control Radio Network Controller) controlling a plurality of cells communicating with the UE, when the SRNC recognizes the beginning of the MBMS;

receiving response messages including information of a transmission mode in response to the MBMS from the CRNCs; and

transmitting a paging message including control information of a control channel adapted to receive the MCCH to the UE over a dedicated channel (DCH) in consideration of the response messages.

6. The method according to claim 5, wherein the SRNC transmits the paging message further including an MBMS ID (Identifier) and a cell ID indicative of a cell supporting the MBMS.

7. The method according to claim 5, wherein the SRNC transmits the paging message to the UE over the CRNCs when receiving response messages including information of a PtM (Point-to-Multipoint) transmission mode.

9. The method according to claim 5, wherein the SRNC receives response messages including information of a PtP transmission mode from the CRNCs, and transmits a paging message including only an MBMS ID to the UE when the MBMS cannot be received in the SRNC in a PtP (Point-to-Point) transmission mode in consideration of MBMS reception capability of the UE.

8. The method according to claim 8, wherein the SRNC transmits a message including an RB (Radio Bearer) reconfiguration information supporting the MBMS to the UE when receiving response messages including information of a PtP (Point-to-Point) transmission mode.

10. A method for allowing a CRNC (Control Radio Network Controller) controlling a cell communicating with a User Equipment (UE) to support the MBMS in a mobile communication system for supporting an MBMS (Multimedia Broadcast/Multicast Service), comprising the steps of:

receiving a message requesting a transmission mode in response to the MBMS from an SRNC (Serving Radio Network Controller) supporting the MBMS when the CRNC recognizes the beginning of the MBMS;

determining a transmission mode in response to the MBMS; and

including control channel information including RB (Radio Bearer) information supporting the MBMS in a response message associated with the request message according to the determined transmission mode, and transmitting the response message including the control channel information.

11. The method according to claim 10, wherein the CRNC determines a PtM (Point-to-Multipoint) transmission mode, transmits response messages to the SRNC in the PtM transmission mode, and transmits a paging message including the control channel information transmitted from the SRNC to the UE over a dedicated channel (DCH).

12. The method according to claim 10, wherein the paging message further includes an MBMS ID (Identifier) and a cell ID indicative of a cell supporting the MBMS.

13. The method according to claim 10, wherein the CRNC determines a PtP (Point-to-Point) transmission mode, transmits response messages to the SRNC in the PtP transmission mode, and transmits a paging message including RB reconstruction information adapted to support the MBMS transmitted from the SRNC to the UE.

14. The method according to claim 10, wherein the CRNC determines a PtP (Point-to-Point) transmission mode, transmits response message to the SRNC in the PtP transmission mode, and transmits a paging message including only an MBMS ID transmitted from the SRNC to the UE.

15. A method for paging a User Equipment (UE) to receive an MBMS (Multimedia Broadcast/Multicast Service) in a mobile communication system for supporting the MBMS, comprising the steps of:

receiving a message including an MBMS ID (Identifier) indicative of the beginning of the MBMS; and

checking the received message, and receiving the MBMS in a cell using a cell ID included in a paging message when the checked message is equal to the paging message further including control channel information adapted to support the MBMS.

16. The method according to claim 15, wherein the paging message includes RB (Radio Bearer) information for supporting the MBMS in the control channel information.

17. The method according to claim 15, wherein the paging message further includes the MBMS ID.

18. The method according to claim 15, further comprising the step of:

determining, by the UE, whether the message is equal to a message including RB reconstruction information adapted to support the MBMS.

19. The method according to claim 15, further comprising the step of:

if the message is equal to a message including the MBMS ID, performing, by the UE, a joining process according to the MBMS ID when the UE terminates the MBMS provided over a dedicated channel in a current cell.