System and method for call admission for a mobile communication system

• US 7,269,423 B2
• Filed: 01/09/2003
• Issued: 09/11/2007
• Est. Priority Date: 01/09/2002
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Dong-Jun, Cho, Jin-Sung, Lee, Sung-Won, Kim, Young-Ky, Park, Dong-Soo, Kim, Sang-Soo
• Primary Examiner(s): Feild; Joseph
• Assistant Examiner(s): Nguyen; Khai
• Application Number:
  US10/338,716
• Publication Number:
  US 20030129988A1
• Time in Patent Office: 1,706 Days
• Field of Search: 455/450, 455/422.1, 455/452.1, 455/452.2, 455/451, 455/67.11, 455/512, 455/513, 455/514, 455/509, 455/453, 370/235, 370/352, 370/232, 370/230
• US Class Current: 455/452.1
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 8/18 Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A QoS-based call admission system and method for a mobile communication system. To establish a call for a mobile station according to the QoS of the call, upon request of setup of a call requiring a QoS guarantee, a base transceiver station determines whether a channel element is available. In the presence of an available channel element, the base transceiver station determines whether a remaining bandwidth can support a data rate required to guarantee the QoS. If the data rate is supported, the base transceiver station assigns the channel element and connects its intra switch to a base station controller. Then the base transceiver station transmits a call accept response signal to the base station controller.

Claims

1. A method of establishing a call for a Mobile Station (MS) according to a Quality of Service (QoS) of the call in a Base Transceiver Station (BTS) communicable with the MS in a service system where the MS, the BTS, and a Base Station Controller (BSC) are connected over a selected network, the method comprising the steps of:

receiving a call setup request message including a QoS parameter from the MS;

determining whether the call requires a QoS guarantee by checking the QoS parameter;

calculating a remaining available bandwidth;

determining whether the remaining available bandwidth can support a data rate required for the QoS guarantee of the call according to a user profile information acquired from a profile server if the call requires the QoS guarantee; and

admitting the call and transmitting a call accept response signal to the BSC, if the data rate is supported or if the call does not require the QoS guarantee.

2. The method of claim 1, further comprising the step of determining whether a channel element (CE) is available for a call required to guarantee the QoS.

3. The method of claim 2, further comprising the step of assigning the channel element if the data rate is supported.

4. The method of claim 1, further comprising the step of admitting the call by transmitting the call accept response signal to a BSC, if a channel resource for non QoS subscriber is available.

5. The method of claim 1, wherein the data rate is supported if a minimum bandwidth required based on a QoS parameter for the call is available.

6. The method of claim 1, wherein the data rate is supported if a maximum bandwidth required based on the QoS parameter is available.

7. The method of claim 1, wherein the data rate is supported if the product of the minimum bandwidth and a selected first factor is available.

8. The method of claim 1, wherein the data rate is supported if the product of the maximum bandwidth and a selected second factor is available.

9. The method of claim 1, further comprising the step of assigning a BTS switch to the call if the data rate is supported.

10. A method of establishing a call for a Mobile Station (MS) according to the Quality of Service (QoS) of the call in a Base Station Controller (BSC) in a service system where the MS, a Base TransceiVer Station (BTS) communicable with the MS, and the BSC are connected over a selected network, the method comprising the steps of:

receiving a call setup request message including a QoS parameter;

determining whether the call requires a QoS guarantee by checking whether the QoS parameter is included in the call setup message;

calculating a remaining available bandwidth between the BTS and BSC;

determining whether a remaining available bandwidth of the network connected to the BTS can support a minimum data rate required based on the QoS of the call assigning the bandwidth according to a user profile database in a profile server; and

transmitting a call establishment request signal to the BTS, if the bandwidth can support the minimum data rate or if the call does not require the QoS guarantee.

11. The method of claim 10, further comprising the step of determining whether a channel element (CE) is available for a call required to guarantee the QoS.

12. The method of claim 10, further comprising the step of assigning the radio resources.

13. The method of claim 10, further comprising the step of admitting the call by transmitting a call accept response signal to at least one of a GateWay and an MSC (Mobile Switching Center), if a channel resource for non QoS subscriber is available.

14. The method of claim 10, wherein the data rate is supported if a minimum bandwidth required based on a QoS parameter for the call is available.

15. The method of claim 10, wherein the data rate is supported if a maximum bandwidth required based on a QoS parameter is available.

16. The method of claim 10, wherein the data rate is supported if the product of a minimum bandwidth and a selected first factor is available.

17. The method of claim 10, wherein the data rate is supported if the product of a maximum bandwidth and a selected second factor is available.

18. The method of claim 10, further comprising the step of connecting a BSC switch to the BTS if the network connected to the BTS has a bandwidth available to support a minimum data rate required based on the QoS of the call.

19. A method of establishing a call for a Mobile Station (MS) according to the Quality of Service (QoS) of the call in a Base Station Controller (BSC) in a service system having a profile server for storing the QoS profile information of the MS, where the MS, a Base Transceiver Station (BTS) communicable with the MS, and the BSC are connected over a selected network, the method comprising the steps of:

receiving a call setup request message including a QoS parameter;

requesting the user profile information of the MS to the profile server;

determining whether radio resources are available within the BSC if the user profile information includes the QoS parameter and the QoS parameter requires a QoS guarantee;

determining whether a remaining available bandwidth of the network connected to the BTS can support a minimum data rate required based on the QoS requirements of the call if the radio resources are available;

assigning the bandwidth and the radio resources; and

transmitting a call establishment request signal to the BTS, if the bandwidth can support the minimum data rate or if the call does not require the QoS guarantee.

20. The method of claim 19, further comprising the step of admitting the call by transmitting a call accept response signal to at least one of a GateWay and an Mobile Switching Center (MSC), if a channel resource for non QoS subscriber is available.

21. The method of claim 19, wherein the data rate is supported if a minimum bandwidth required from the QoS parameter is available.

22. The method of claim 19, wherein the data rate is supported if a maximum bandwidth required from the QoS parameter is available.

23. The method of claim 19, wherein the data rate is supported if a product of the minimum bandwidth and a selected first factor is available.

24. The method of claim 19, wherein the data rate is supported if a product of the maximum bandwidth and a selected second factor is available.

25. The method of claim 19, further comprising the step of connecting a BSC switch to the BTS if the network connected to the BTS has a bandwidth available to support a minimum data rate required based on the QoS of the call.

26. A system for establishing a call over a communication network

according to the Quality of Service requirement for the call, the system comprising:

a mobile station, a base transceiver station, a base transceiver station controller, a base station controller and a profile server;

said base station transceiver controller being adapted to receive a call setup message including a QoS parameter and determine if said call requires a QoS guarantee by checking whether a QoS parameter is included in a call setup message, calculate a remaining available bandwidth, determine whether a remaining bandwidth can support a data rate required to guarantee the QoS of the call, admit the call if the data rate is supported or if the call does not require the QoS guarantee and transmit a call accept response signal to the base station controller;

said profile server being adapted to maintain a user profile database comprising QoS parameters and toprovide QoS parameters to said base station if requested by said base station.

27. The system of claim 26, wherein said base station transceiver controller is adapted to determining whether a channel element (CE) is available for a call required to guarantee the QoS.

28. The system of claim 27, wherein said base station transceiver controller is adapted to assign the channel element if the data rate is supported.

29. The system of claim 26, wherein said base station transceiver controller is adapted to admit the call by transmitting the call accept response signal to the base station controller, if the call does not require the QoS guarantee and if a channel resource for non QoS subscriber is available.

30. The system of claim 29, wherein said base station transceiver controller is adapted to determine whether the data rate is supported if the product of the minimum bandwidth and a selected first factor is available.

31. The system of claim 26, wherein said base station transceiver controller is adapted to determine whether the data rate is supported if a minimum bandwidth required based on a QoS parameter for the call is available.

32. The system of claim 26, wherein said base station transceiver controller is adapted to determine whether the data rate is supported if a maximum bandwidth required based on the QoS parameter is available.

33. The system of claim 26, wherein said base station transceiver controller is adapted to determine whether the data rate is supported if the product of the maximum bandwidth and a selected second factor is available.

34. A system for establishing a call over a communication network according to the Quality of Service requirement for the call, the system comprising:

a mobile station, a base transceiver station, a base station controller and a profile server;

said base station controller being adapted to receive a call setup message including a QoS parameter and determine if said call requires a QoS guarantee by checking whether a QoS parameter is included in a call setup message, calculate a remaining bandwidth between the BTS and BSC, determine whether a remaining available bandwidth of the network connected to the base transceiver station can support a minimum data rate requirement based on the QoS of the call, assign the bandwidth and transmit a call establishment request signal to the base station transceiver if the bandwidth available can support the minimum data rate or if the call does not require the QoS guarantee;

said profile server being adapted to maintain a user profile database comprising QoS parameters and to provide QoS parameters to said base station if requested by said base station.

35. The system of claim 34, wherein said base station controller is adapted to determine whether radio resources are available for a call required to guarantee the QoS.

36. The system of claim 34, wherein said base station controller is adapted to assign a channel element if the data rate is supported and connect to the base transceiver station.

37. The system of claim 34, wherein said base station controller is adapted to admit the call by transmitting a call accept response signal to at least one of a GateWay and a Mobile Switching Center, and if a channel resource for non QoS subscriber is available.

38. The system of claim 34, wherein said base station controller is adapted to determine whether the data rate is supported if a minimum bandwidth required based on a QoS parameter for the call is available.

39. The system of claim 34, wherein said base station controller is adapted to determine whether the data rate is supported if a maximum bandwidth required based on a QoS parameter is available.

40. The system of claim 34, wherein said base station controller is adapted to determine whether the data rate is supported if the product of a minimum bandwidth and a selected first factor is available.

41. The system of claim 34, wherein said base station controller is adapted to determine whether the data rate is supported if the product of a maximum bandwidth and a selected second factor is available.

42. A system for establishing a call over a communication network according to the Quality of Service requirement for the call, the system comprising:

a mobile station, a base transceiver station, a base station controller and a profile server;

said base station controller being adapted to acquire user profile information of the mobile station from a profile server upon receipt of a call setup request message including a QoS parameter, compare the user profile information with the QoS parameter, determine whether radio resources are available by a difference between overall available bandwidth and bandwidth in use if the user profile information includes the QoS parameter, determine whether a remaining available bandwidth of the network connected to the base transceiver station can support a minimum data rate required based on the QoS requirements of the call if the radio resources are available, assign the bandwidth and radio resources, connect the base transceiver station, and transmit a call establishment request signal to the base transceiver station if the bandwidth can support the minimum data rate or if the call does not require the QoS guarantee;

said profile server being adapted to maintain a user profile database comprising QoS parameters and to provide QoS parameters to said base station if requested by said base station.

43. The system of claim 42, wherein said base station controller is adapted to admit the call by transmitting a call accept response signal to at least one of a GateWay and a Mobile Switching Center, if a channel resource for non QoS subscriber is available.

44. The system of claim 42, wherein said base station controller is adapted to determine whether the data rate is supported if a minimum bandwidth required based on a QoS parameter for the call is available.

45. The system of claim 42, wherein said base station controller is adapted to determine whether the data rate is supported if a maximum bandwidth required based on a QoS parameter is available.

46. The system of claim 42, wherein said base station controller is adapted to determine whether the data rate is supported if the product of a minimum bandwidth and a selected first factor is available.

47. The system of claim 42, wherein said base station controller is adapted to determine whether the data rate is supported if the product of a maximum bandwidth and a selected second factor is available.