Mobile access in a diverse access point network

• US 9,125,139 B2
• Filed: 11/18/2013
• Issued: 09/01/2015
• Est. Priority Date: 10/01/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gholmieh, Aziz, Grilli, Francesco, Tenny, Nathan Edward, Zreiq, Samer S., Nizri, Shlomo
• Primary Examiner(s): Siddiqui, Kashif
• Application Number:
  US14/082,646
• Publication Number:
  US 20140073286A1
• Time in Patent Office: 652 Days
• Field of Search: 4554351-4353, 455/410, 455/550.1
• US Class Current: 1/1
• CPC Class Codes: H04W 16/32 Hierarchical cell structures
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/14 using user query or user detection

Abstract

Facilitating user terminal (UT) access to wireless networks having base stations (BSs) of disparate access types is described herein. In some aspects, BS parameterization is provided to facilitate search and/or access to distinct types of network BSs. For instance, parameters can modify a likelihood of identifying or remaining coupled to restricted access (RA) BSs in a home Node B (HNB) deployment. In other aspects of the subject disclosure, a PLMN ID reserved for HNBs is provided comprising multiple region IDs. Where a UT identifies a home region, HNBs can be given preference over macro BSs. Additionally, the UT can keep track of HNBs and HNB regions that reject access to the UT, and implement a delay time to mitigate rapid signaling to foreign HNBs in a dense HNB deployment. Accordingly, the subject disclosure provides for more efficient UT access in heterogeneous access type networks.

Claims

1. A method of providing mobile access in a wireless network, comprising:

obtaining a network access request from a first user terminal (UT) via a wireless signal, the network access request including identification information of the first UT;

allowing or denying the network access request based on the identification information of the first UT; and

transmitting, by a base station serving a sector of the wireless network, a set of one or more weighting parameters configured to weigh search and/or access parameters of a UT to increase a probability that the UT will access a restricted access base station (RA BS) or decrease a probability that the UT will access a general access base station (GA BS).

2. The method of claim 1, wherein the search and/or access parameters establish a higher priority for one type of base station (BS) over another BS type.

3. The method of claim 2, wherein a higher priority type of BS comprises an RA BS.

4. The method of claim 1, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises establishing a low relative threshold below which a UT served by an RA BS in the sector searches for neighboring sectors of the wireless network.

5. The method of claim 1, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises establishing a low relative threshold below which a UT served by an RA BS in the sector re-selects to a neighboring sector of the wireless network.

6. The method of claim 1, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises establishing a low relative threshold below which a UT served by an RA BS searches for neighboring RA BSs that share a common frequency with the GA BS.

7. The method of claim 1, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises establishing a low relative threshold below which a UT served by an RA BS searches for neighboring RA BSs on different frequencies than utilized by the GA BS.

8. The method of claim 1, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises establishing a high relative threshold below which a UT served by a GA BS searches for RA BSs.

9. The method of claim 1, further comprising obtaining a UT profile that indicates RA capabilities of the first UT, wherein the set of one or more weighting parameters increases a likelihood of the first UT accessing or handing off to an RA BS based on the first UT being an RA-authorized UT, or decreases a likelihood of the first UT signaling the RA BS based on the first UT being a non RA-authorized UT.

10. The method of claim 1, wherein an RA BS comprises a femto BS.

11. The method of claim 1, wherein allowing or denying the network access request comprises:

determining whether the first UT is an RA-authorized UT;

based on the first UT being an RA-authorized UT, comparing an identifier (ID) reserved for RA BSs to an ID associated with the first UT; and

transmitting the set of one or more weighting parameters when the ID reserved for the RA BSs matches the ID associated with the first UT.

12. The method of claim 11, further comprising:

based on the UT not being an RA-authorized UT, transmitting the set of one or more weighting parameters configured to weigh the search and/or access parameters of the UT to increase the probability that the UT will access a GA BS or decrease a probability that the UT will access an RA BS.

13. The method of claim 1, wherein allowing or denying the network access request comprises:

determining whether an RA BS is a home BS for the first UT;

allowing the network access request based on the RA BS being the home BS for the first UT; and

denying the network access request based on the RA BS not being home BS for the first UT.

14. A base station, comprising:

a transceiver that obtains a wireless signal comprising a network access request from a first user terminal (UT), the network access request including identification information of the first UT;

a registration module that allows or denies the network access request based on the identification information of the first UT; and

a selective access module that employs the transceiver to transmit a set of one or more weighting parameters configured to weigh search and/or access parameters of a UT to increase a probability that the UT will access a restricted access base station (RA BS) in a sector or to decrease a probability that the UT will access a general access base station (GA BS) in the sector.

15. The base station of claim 14, wherein the registration module that allows or denies the network access request is further configured to:

determine whether the first UT is an RA-authorized UT;

based on the first UT being an RA-authorized UT, comparing an identifier (ID) reserved for RA BSs to an ID associated with the first UT; and

transmits the set of one or more weighting parameters when the ID reserved for the RA BSs matches the ID associated with the first UT.

27. The method of claim 15, wherein an RA BS comprises a femto BS.

16. A method of accessing a wireless network, comprising:

receiving, at a user terminal (UT), a wireless signal transmitted by a wireless network base station (BS);

obtaining from the wireless signal a set of one or more weighting parameters configured to weigh search and/or access parameters of the UT to increase a probability of the UT employing a restricted access base station (RA BS) or decrease a probability of the UT employing a general access base station (GA BS) to interface with the wireless network; and

employing the search and/or access parameters to implement communication with the wireless network.

17. The method of claim 16, wherein the search and/or access parameters establish a higher priority for one type of base station (BS) over another BS type.

18. The method of claim 17, wherein a higher priority type of BS comprises an RA BS.

19. The method of claim 16, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises obtaining a parameter from the search and/or access parameters that establishes a low threshold below which a UT served by an RA BS searches for non-RA BSs.

20. The method of claim 16, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises obtaining a parameter from the search and/or access parameters that establishes a low threshold below which a UT searches for BSs that utilize a frequency of the wireless network employed by GA BSs.

21. The method of claim 16, wherein increasing the probability that the UT will access an RA BS or decreasing the probability that the UT will access a GA BS comprises obtaining a parameter from the search and/or access parameters that establishes a high threshold below which a UT searches for a frequency of the wireless network employed by RA BSs.

22. The method of claim 16, wherein a UT profile indicates RA capabilities of the UT served by the wireless network, and further comprising at least one of:

employing the set of one or more weighting parameters to weigh the search and/or access parameters to increase a likelihood of accessing an RA BS based on the UT being an RA-capable UT, or

employing the set of one or more weighting parameters to weigh the search and/or access parameters of the UT to decrease a likelihood of searching for an RA BS based on the UT being a non RA-capable UT.

23. The method of claim 16, further comprising:

obtaining a regional public land mobile network (PLMN) identifier (ID) of the BS and a PLMN ID reserved for RA BSs as an equivalent of a home PLMN ID of the UT when the UT is RA-capable.

24. The method of claim 23, further comprising at least one of:

recording the regional PLMN ID as a favored regional ID based on access being obtained;

or

recording the regional PLMN ID as an excluded regional ID based on access being rejected.

25. The method of claim 24, further comprising searching for or accessing BSs on a frequency of the wireless network utilized by RA BSs when the regional PLMN ID of the BS is the favored regional ID.

26. The method of claim 16, further comprising at least one of:

obtaining access to the BS when the BS is a home RA BS of the UT.

28. The method of claim 16, further comprising refraining from searching for BSs on a frequency utilized for RA BSs for a delay period when access to the BS is rejected.

29. A user terminal (UT) configured for accessing a wireless network, comprising:

a transceiver that obtains a wireless signal transmitted by a wireless network base station (BS);

a signal processor that obtains from the wireless signal a set of one or more weighting parameters configured to weigh search and/or access parameters of the UT to increase a probability of the UT employing a restricted access base station (RA BS) or decrease a probability of the UT employing a general access base station (GA BS) to interface with the wireless network; and

an access module that employs the search and/or access parameters to implement communication with the wireless network.

30. The user terminal of claim 29, wherein a UT profile indicates RA capabilities of the UT served by the wireless network, and wherein the signal processor is further configured to:

employ the set of one or more weighting parameters to weigh the search and/or access parameters to increase a likelihood of accessing an RA BS based on the UT being an RA-capable UT, or

employ the set of one or more weighting parameters to weigh the search and/or access parameters of the UT to decrease a likelihood of searching for an RA BS based on the UT being a non RA-capable UT.

31. A method of providing mobile access in a wireless network, comprising:

transmitting, by a base station serving a sector of the wireless network, a set of one or more weighting parameters configured to weigh search and/or access parameters of a user terminal (UT) to increase a probability that the UT will access a local area base station or decrease a probability that the UT will access a macro area base station;

obtaining a network access request from a first UT via a wireless signal, the network access request including identification information of the first UT;

allowing or denying the network access request based on the identification information of the first UT.

32. The method of claim 31, wherein the local area base station comprises a restricted access base station, a Home Node B (HNB), or a Femto base station.

33. The method of claim 31, wherein the identification information of the first UT comprises an international mobile subscriber identity (IMSI).

34. The method of claim 31, wherein obtaining the network access request comprises obtaining the network access request based on a cell access history of the first UT.

35. The method of claim 34, wherein obtaining the network access request based on the cell access history of the first UT comprises obtaining the network access request based on the first UT determining that the base station is a preferred base station based on the cell access history of the first UT.

36. The method of claim 34, wherein the base station receives the cell access history of the first UT from the first UT.

37. The method of claim 34, wherein the cell access history of the first UT is recorded by the first UT.

38. The method of claim 31, wherein obtaining the network access request comprises obtaining the network access request based on a mobility of the first UT.

39. The method of claim 38, wherein obtaining the network access request based on the mobility of the first UT comprises obtaining the network access request based on the first UT ignoring small area base stations having a base station identifier different than a base station identifier of the base station.

40. The method of claim 39, wherein the base station identifier of the base station comprises a Femto public land mobile network (PLMN) identifier.

41. The method of claim 31, wherein the identification information of the first UT comprises a PLMN identifier associated with the first UT.

42. The method of claim 41, wherein allowing or denying the network access request based on the identification information of the first UT comprises allowing or denying the network access request based on the PLMN identifier matching a PLMN identifier of the base station.

43. A method for assigning location area identifiers to small area base stations, comprising:

defining one or more network regions containing one or more small area base stations; and

assigning location area identifiers to the one or more small area base stations in the one or more network regions, wherein a location area identifier of a small area base station is different than a location area identifier of a macro area base station providing wireless service in a network region containing the small area base station, and wherein the location area identifier of the small area base station is transmitted by the small area base station to one or more user terminals in a coverage area of the small area base station.

44. The method of claim 43, wherein the assigning comprises assigning a different location area identifier to each of the one or more small area base stations in a network region.

45. The method of claim 43, wherein the assigning comprises assigning a same location area identifier to each of the one or more small area base stations in a network region.

46. The method of claim 43, wherein the location area identifier comprises a public land mobile network (PLMN) identifier.

47. The method of claim 46, further comprising:

transmitting a set of one or more weighting parameters configured to weigh search and/or access parameters of a user terminal (UT) to increase a probability that the UT will access a restricted access base station (RA BS) or decrease a probability that the UT will access a general access base station (GA BS);

obtaining a network access request from a first UT via a wireless signal, the network access request including identification information of the first UT; and

allowing or denying the network access request based on the identification information of the first UT.

48. The method of claim 47, wherein allowing or denying the network access request comprises:

retrieving a PLMN identifier associated with the first UT based on the identification information of the first UT;

comparing the PLMN identifier to the PLMN identifier associated with the first UT; and

allowing the network access request based on the PLMN identifier matching the PLMN identifier associated with the first UT.

49. The method of claim 43, wherein the one or more user terminals ignore small area base stations having a location area identifier different than a location area identifier of one or more home base stations of the one or more user terminals.

50. The method of claim 43, wherein the one or more user terminals scan for small area base stations upon detecting a location area identifier matching a location area identifier of one or more home base stations of the one or more user terminals.

51. A base station for providing mobile access in a sector of a wireless network, comprising:

a selective access module that employs a transceiver of the base station to transmit a set of one or more weighting parameters configured to weigh search and/or access parameters of a user terminal (UT) to increase a probability that the UT will access a local area base station or decrease a probability that the UT will access a macro area base station;

a registration module that obtains a network access request from a first UT via a wireless signal, the network access request including identification information of the first UT, and that allows or denies the network access request based on the identification information of the first UT.

52. The base station of claim 51, wherein the local area base station comprises a restricted access base station, a Home Node B (HNB), or a Femto base station.

53. The base station of claim 51, wherein the identification information of the first UT comprises an international mobile subscriber identity (IMSI).

54. The base station of claim 51, wherein the transceiver that obtains the network access request comprises the transceiver being further configured to obtain the network access request based on a cell access history of the first UT.

55. The base station of claim 54, wherein the transceiver that obtains the network access request based on the cell access history of the first UT comprises the transceiver being further configured to obtain the network access request based on the first UT determining that the base station is a preferred base station based on the cell access history of the first UT.

56. The base station of claim 54, wherein the base station receives the cell access history of the first UT from the first UT.

57. The base station of claim 54, wherein the cell access history of the first UT is recorded by the first UT.

58. The base station of claim 51, wherein the transceiver that obtains the network access request comprises the transceiver being further configured to obtain the network access request based on a mobility of the first UT.

59. The base station of claim 58, wherein the transceiver that obtains the network access request based on the mobility of the first UT comprises the transceiver being further configured to obtain the network access request based on the first UT ignoring small area base stations having a base station identifier different than the base station identifier of the base station.

60. The base station of claim 59, wherein the base station identifier of the base station comprises a Femto public land mobile network (PLMN) identifier.

61. The base station of claim 51, wherein the identification information of the first UT comprises a PLMN identifier associated with the first UT.

62. The base station of claim 61, wherein the registration module that allows or denies the network access request based on the identification information of the first UT comprises the registration module being further configured to allow or deny the network access request based on the PLMN identifier matching a PLMN identifier of the base station.

63. A base station for assigning location area identifiers to small area base stations, comprising:

a transceiver; and

a selective access module that defines one or more network regions containing one or more small area base stations and that employs the transceiver to assign location area identifiers to the one or more small area base stations in the one or more network regions, wherein a location area identifier of a small area base station is different than a location area identifier of a macro area base station providing wireless service in a network region containing the small area base station, and wherein the location area identifier of the small area base station is transmitted by the small area base station to one or more user terminals in a coverage area of the small area base station.

64. The base station of claim 63, wherein the selective access module that assigns the location area identifiers comprises the selective access module being further configured to assign a different location area identifier to each of the one or more small area base stations in a network region.

65. The base station of claim 63, wherein the selective access module that assigns the location area identifiers comprises the selective access module being further configured to assign a same location area identifier to each of the one or more small area base stations in a network region.

66. The base station of claim 63, wherein the location area identifier comprises a public land mobile network (PLMN) identifier.

67. The base station of claim 66, wherein the selective access module employs the transceiver to transmit a set of one or more weighting parameters configured to weigh search and/or access parameters of a user terminal (UT) to increase a probability that the UT will access a restricted access base station (RA BS) or decrease a probability that the UT will access a general access base station (GA BS), the base station further comprising:

a registration module that obtains a network access request from a first UT via a wireless signal, the network access request including identification information of the first UT, and allows or denies the network access request based on the identification information of the first UT.

68. The base station of claim 67, wherein the registration module that allows or denies the network access request comprises the registration module being further configured to:

retrieve a PLMN identifier associated with the first UT based on the identification information of the first UT;

compare the PLMN identifier to the PLMN identifier associated with the first UT; and

allow the network access request based on the PLMN identifier matching the PLMN identifier associated with the first UT.

69. The base station of claim 63, wherein the one or more user terminals ignore small area base stations having a location area identifier different than a location area identifier of one or more home base stations of the one or more user terminals.

70. The base station of claim 63, wherein the one or more user terminals scan for small area base stations upon detecting a location area identifier matching a location area identifier of one or more home base stations of the one or more user terminals.