Paging apparatus and method for MBMS service in a mobile communication system

• US 20040029596A1
• Filed: 06/18/2003
• Published: 02/12/2004
• Est. Priority Date: 06/20/2002
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Ju-Ho, Choi, Sung-Ho, Kim, Soeng-Hun, Lee, Kook-Heui
• Granted Patent: US 7,395,076 B2
• Time in Patent Office: Days
• US Class Current: 455/458
• 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 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for paging user equipments (UEs) receiving a second service in a mobile communication system providing a first service and the second service. A serving General Packet Radio Service (GPRS) support node (SGSN), determines an identifier indicating the second service and a coefficient related to paging occasions for transmitting a paging instance indicating presence/absence of paging information related to the second service in response to a request for the second service from UEs, and transmits the determined identifier and coefficient to a radio network controller (RNC). The RNC transmits the identifier and the coefficient to the UEs, determines the paging occasions and transmission times of the paging instance in each of the paging occasions by using the identifier and the coefficient, and transmits the paging instances over a first channel at the transmission times of the paging instances for each of the paging occasions so that the UEs recognize presence/absence of the paging information.

Claims

1. A method for paging user equipments (UEs) providing a second service different from a first service in a mobile communication system providing the first service and the second service, comprising the steps of:

determining, by a serving General Packet Radio Service (GPRS) support node (SGSN), an identifier indicating the second service and a coefficient related to paging occasions for transmitting a paging instance indicating presence/absence of paging information related to the second service in response to a request for the second service from the UEs, and transmitting the determined identifier and coefficient to a radio network controller (RNC); and

transmitting, by the RNC, the identifier and the coefficient to the UEs, determining the paging occasions and transmission times of the paging instance in each of the paging occasions by using the identifier and the coefficient, and transmitting the paging instances over a first channel at the transmission times of the paging instances for each of the paging occasions so that the UEs recognize presence/absence of the paging information.

2. The method of claim 1, wherein the UEs determine the paging occasions and reception times of the paging instances in each of the paging occasions by using the identifier and the coefficient, monitor the first channel in each paging occasion, and receive, if the paging instances indicate presence of the paging information, the paging information by receiving a second channel after a lapse of a preset time.

3. The method of claim 2, wherein the first channel is a paging indicator channel (PICH) and the second channel is a paging channel (PCH).

4. A method for paging user equipments (UEs) providing a second service different from a first service in a mobile communication system providing the first service and the second service, comprising the steps of:

receiving, by a serving General Packet Radio Service (GPRS) support node (SGSN), a paging information transmission time when paging information related to the second service is to be transmitted, determining an identifier indicating the second service and a coefficient related to paging occasions for transmitting a paging instance indicating presence/absence of paging information related to the second service, and transmitting the determined identifier and coefficient to a radio network controller (RNC) along with the paging information transmission time; and

determining, by the RNC, an activation time indicating a transmission start time of the paging occasions by using the paging information transmission time, transmitting the identifier, the coefficient and the activation time to the UEs, determining the paging occasions and transmission times of the paging instance in each of the paging occasions by using the identifier and the coefficient, and transmitting the paging instances over a first channel at the transmission times of the paging instances for each of the paging occasions beginning at the activation time so that the UEs recognize presence/absence of the paging information.

5. The method of claim 4, wherein the UEs determine the paging occasions and reception times of the paging instances in each of the paging occasions by using the identifier and the coefficient, monitor the first channel in each paging occasion beginning at the activation time, and receive, if the paging instances indicate presence of the paging information, the paging information by receiving a second channel after a lapse of a preset time.

6. The method of claim 5, wherein the first channel is a paging indicator channel (PICH) and the second channel is a paging channel (PCH).

7. A method for paging user equipments (UEs) providing a second service different from a first service in a mobile communication system providing the first service and the second service, comprising the steps of:

receiving, by a serving General Packet Radio Service (GPRS) support node (SGSN), a paging information transmission time when paging information related to the second service is to be transmitted, determining an identifier indicating the second service and first and second coefficients related to paging occasions for transmitting a paging instance indicating presence/absence of paging information related to the second service, and transmitting the determined identifier and first and second coefficients to a radio network controller (RNC) along with the paging information transmission time; and

determining, by the RNC, an activation time indicating a transmission start time of the paging occasions by using the paging information transmission time, transmitting the identifier, the first and second coefficients and the activation time to the UEs, determining the paging occasions and transmission times of the paging instance in each of the paging occasions by using the identifier and the first coefficient, determining the paging occasions and transmission times of the paging instance in each of the paging occasions by using the identifier and the second coefficient, transmitting the paging instances over a first channel at the transmission times of the paging instances for each of the paging occasions determined by using the first coefficient from the present until the activation time, transmitting the paging instances over the first channel at the transmission times of the paging instances for each of the paging occasions determined by using the second coefficient from the activation time so that the UEs recognize presence/absence of the paging information.

8. The method of claim 7, wherein the UEs determine the paging occasions and reception times of the paging instances in each of the paging occasions by using the identifier and the first coefficient, determine the paging occasions and reception times of the paging instances in each of the paging occasions by using the identifier and the second coefficient, monitor the first channel at the reception times of the paging instance for each of the paging occasions determined by using the first coefficient from the present until the activation time, monitor the first channel at the reception times of the paging instance for each of the paging occasions determined by using the second coefficient from the activation time, and receives, if the paging instances indicate presence of the paging information, the paging information by receiving a second channel after a lapse of a preset time.

9. The method of claim 8, wherein the first channel is a paging indicator channel (PICH) and the second channel is a paging channel (PCH).

10. An apparatus for paging user equipments (UEs) providing a second service different from a first service in a mobile communication system providing the first service and the second service, the apparatus comprising:

a controller for calculating paging occasions for receiving a first channel signal and reception times of paging instances in each of the paging occasions by using parameters related to transmission of the first channel signal including the paging instances indicating presence/absence of paining information related to the second service, and receiving the paging instances at the reception times of the paging instances for each of the paging occasions; and

a receiver for receiving the paging instances at the reception times of the paging instances for each of the paging occasions under the control of the controller, and receiving the paging information by receiving a second channel after a lapse of a preset time, if the received paging instances indicate presence of the paging information.

11. The apparatus of claim 10, wherein the parameters include a coefficient related to paging occasions for transmitting a paging instance and an identifier indicating the second service, both of which are transmitted over the first channel.

12. The apparatus of claim 10, wherein the first channel is a paging indicator channel (PICH) and the second channel is a paging channel (PCH).

13. The apparatus of claim 10, wherein the parameters include a coefficient related to paging occasions for transmitting a paging instance, an identifier indicating the second service, and an activation time indicating a transmission start time of the paging occasions, all of which are transmitted over the first channel.

14. The apparatus of claim 13, wherein the receiver receives the paging information by receiving the second channel after a lapse of a preset time beginning at the activation time, if the paging instances indicate presence of the paging information at the reception times of the paging instances for each of the paging occasions.

15. The apparatus of claim 10, wherein the parameters include first and second coefficients related to paging occasions for transmitting paging instances, an identifier indicating the second service, and an activation time indicating a transmission start time of the paging occasions, all of which are transmitted over the first channel.

16. The apparatus of claim 15, wherein the controller calculates the paging occasions and reception times of the paging instance in each of the paging occasions by using the identifier and the first coefficient, calculates the paging occasions and reception times of the paging instances in each of the paging occasions by using the identifier and the second coefficient, receives the paging instances over the first channel at the reception times of the paging instances for each of the paging occasions calculated by using the first coefficient from the present until the activation time, and receives the paging instances over the first channel at the reception times of the paging instances for each of paging occasions calculated by using the second coefficient beginning at the activation time.

17. The apparatus of claim 16, wherein the receiver receives, until the activation time, receives the paging instances at the reception times of the paging instance for each of paging occasions calculated by using the first coefficient and receives the paging information by receiving the second channel after a lapse of a preset time if the received paging instances indicate presence of the paging information, wherein the receiver receives, from the activation time, the paging instances at the reception times of paging instances for each of paging occasions calculated by using the second coefficient and receives the paging information by receiving the second channel after a lapse of a preset time if the received paging instances indicate presence of the paging information.

18. A method for paging user equipments (UEs) providing a second service different from a first service in a mobile communication system providing the first service and the second service, comprising the steps of:

(a) calculating paging occasions for receiving a first channel signal and reception times of paging instances in each of the paging occasions related to the second service by using parameters related to transmission of the first channel signal including the paging instances indicating presence/absence of paging information related to the second service;

(b) receiving the paging instances at the reception times of the paging instances for each of the paging occasions; and

(c) receiving the paging information by receiving a second channel after a lapse of a preset time if the received paging instances indicate presence of the paging information.

19. The method of claim 18, wherein the parameters include a coefficient related to paging occasions for transmitting a paging instance and an identifier indicating the second service, both of which are transmitted over the first channel.

20. The method of claim 18, wherein the parameters include a coefficient related to paging occasions for transmitting paging instances, an identifier indicating the second service, and an activation time indicating a transmission start time of the paging occasions, all of which are transmitted over the first channel.

21. The method of claim 20, wherein step (b) further comprises the step of receiving the paging instances at the reception times of the paging instances for each of the paging occasions beginning at the activation time.

22. The method of claim 18, wherein the parameters include first and second coefficients related to paging occasions for transmitting paging instances, an identifier indicating the second service, and an activation time indicating a transmission start time of the paging occasions, all of which are transmitted over the first channel.

23. The method of claim 22, wherein step (a) further comprises the step of calculating the paging occasions and reception times of the paging instances in each of the paging occasions by using the identifier and the first coefficient, and calculating the paging occasions and reception times of the paging instances in each of the paging occasions by using the identifier and the second coefficient.

24. The method of claim 23, wherein step (b) further comprises the step of receiving the paging instances over the first channel at the reception times of the paging instances for each of the paging occasions calculated by using the first coefficient from a first time until the activation time, and receiving the paging instances over the first channel at the reception times of the paging instances for each of the paging occasions calculated by using the second coefficient beginning at the activation time.