Paging apparatus and method in a mobile communication system providing multimedia broadcast multicast service

• US 20030088695A1
• Filed: 10/21/2002
• Published: 05/08/2003
• Est. Priority Date: 10/20/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Sung-Ho, Kim, Sung-Hoon, Kwak, Yong-Jun, Park, Joon-Goo, Lee, Hyeon-Woo, Seo, Myeong-Sook
• Granted Patent: US 7,630,725 B2
• Time in Patent Office: Days
• US Class Current: 709/238
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

A paging apparatus and method in a mobile communication system providing an MBMS (Multimedia Broadcast Multicast Service). In the mobile communication system, to page a UE for a first service through a primary carrier during a second service in progress through a secondary carrier, a PICH (Paging Indication Channel) transmitter in a Node B transmits paging indication information to the UE through the primary carrier by oscillating the primary carrier as a transmission frequency. A PCH (Paging Channel) transmitter transmits paging information to the UE through the primary carrier or the secondary carrier by oscillating the primary carrier or the secondary carrier as the transmission frequency under a predetermined control. A PBMSCH (Physical Broadcast Multicast Shared Channel) transmitter transmits data of the second service through the secondary carrier by oscillating the secondary carrier as the transmission frequency. A controller controls the primary carrier or the secondary carrier to be oscillated as the transmission frequency of the PCH transmitter if the paging indication information indicates paging.

Claims

1. A method of paging a UE (User Equipment) while a second service is in progress at a Node B in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing a first service through a primary carrier, transmitting paging indication information through the primary carrier, transmitting paging information through the primary carrier, and providing the second service to at least one of the UEs through a secondary carrier having a different frequency from the primary carrier, the method comprises periodically transmitting modulated paging indication information to the UE through the secondary carrier.

2. The method of claim 1, wherein the first service has a higher priority than the second service.

3. A method of receiving paging for a first service from a Node B while a second service, different from the first service, is in progress at a UE (User Equipment) in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the method comprising the steps of:

periodically receiving paging indication information while receiving the second service through the secondary carrier;

receiving paging information if the paging indication information indicates paging; and

receiving the first service through the primary carrier by switching a reception frequency of the UE to the primary carrier.

4. The method of claim 3, wherein the first service has a higher priority than the second service.

5. A method of receiving paging for a first service from a Node B while a second service, different from the first service, is in progress at a UE (User Equipment) in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the method comprising the steps of:

periodically receiving paging indication information while receiving the second service through the secondary carrier;

receiving paging information through the primary carrier by switching a reception frequency of the UE to the primary carrier if the paging indication information indicates paging; and

receiving the first service through the primary carrier.

6. The method of claim 5, wherein the first service has a higher priority than the second service.

7. A method of paging a UE (User Equipment) for a first service while a second service, different from the first service, is in progress at a Node B in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the method comprising the steps of:

transmitting paging indication information to the UE through the secondary carrier when the UE is paged; and

transmitting to the UE paging information corresponding to the paging indication information through the secondary carrier.

8. A method of paging a UE (User Equipment) for a first service while a second service, different from the first service, is in progress at a Node B in a mobile communication system including the Node B and a plurality of UEs within the cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the method comprising the steps of:

transmitting paging indication information to the UE through the secondary carrier when the UE is paged; and

transmitting to the UE paging information corresponding to the paging indication information through the primary carrier.

9. The method of claim 8, wherein the paging indication information is transmitted only to UEs that are receiving the second service.

10. The method of claim 8, wherein the first service has a higher priority than the second service.

11. A method of paging a UE (User Equipment) for a first service while a second service, different from the first service, is in progress at a Node B in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the method comprises transmitting paging indication information to the UE through the secondary carrier when the UE is paged.

12. A method of receiving paging for a first service from a Node B while a second service, different from the first service, is in progress at a UE (User Equipment) in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the method comprising the steps of:

receiving paging information while receiving the second service through the secondary carrier; and

receiving the first service through the primary carrier by switching a reception frequency of the UE to the primary carrier.

13. The method of claim 12, wherein the first service has a higher priority than the second service.

14. An apparatus for paging a UE (User Equipment) for a first service while a second service. different from the first service, is in progress at a Node B in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the apparatus comprising:

a first PICH (Paging Indication Channel) transmitter for transmitting paging indication information to the UE through the primary carrier by oscillating the primary carrier as a transmission frequency;

a PCH (Paging Channel) transmitter for transmitting paging information to the UE through the primary carrier by oscillating the primary carrier as the transmission frequency;

a second PICH transmitter for transmitting paging indication information to the UE through the secondary carrier by oscillating the secondary carrier as a transmission frequency; and

a PBMSCH (Physical Broadcast Multicast Shared Channel) transmitter for transmitting data of the second service through the secondary carrier by oscillating the secondary carrier as the transmission frequency.

15. The apparatus of claim 14, wherein the PICH transmitter transmits the paging indication information only to UEs receiving the second service.

16. An apparatus for receiving paging for a first service from a Node B while a second service, different from the first service, is in progress at a UE (User Equipment) in a mobile communication system including the Node B and a plurality of UEs within a cell area of the Node B, the Node B providing the first service through a primary carrier and providing the second service through a secondary carrier having a different frequency from the primary carrier, the apparatus comprising:

a first PICH (Paging Indication Channel) receiver for receiving paging indication information from the Node B through the primary carrier by oscillating the primary carrier as a reception frequency;

a PCH (Paging Channel) receiver for receiving paging information from the Node B through the primary carrier or the secondary carrier by oscillating the primary carrier or the secondary carrier as the reception frequency under a predetermined control;

a second PICH (Paging Indication Channel) receiver for receiving paging indication information from the Node B through the secondary carrier by oscillating the secondary carrier as a reception frequency;

a PBMSCH (Physical Broadcast Multicast Shared Channel) receiver for receiving data of the second service through the secondary carrier by oscillating the secondary carrier as the reception frequency; and

a controller for controlling the primary carrier or the secondary carrier to be oscillated as the reception frequency of the PCH receiver if the paging indication information indicates paging.

17. The apparatus of claim 16, wherein the paging indication information is transmitted only to UEs receiving the second service.