Link quality reporting using frame erasure rates

• US 6,347,217 B1
• Filed: 05/22/1997
• Issued: 02/12/2002
• Est. Priority Date: 05/22/1997
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Wallstedt, Yngve Kenneth, Bengtsson, Karin Agneta, Ekudden, Erik, Olofsson, Håkan Gunnar
• Primary Examiner(s): Chang, Vivian
• Assistant Examiner(s): APPIAH, CHARLES NANA
• Application Number:
  US08/859,939
• Time in Patent Office: 1,727 Days
• Field of Search: 455/566, 455/226.4, 455/226.3, 455/226.1, 455/67.1, 455/67.3, 455/423, 455/436, 455/67.7, 455/11.1, 455/560, 375/224, 375/227, 375/228, 370/332, 370/333
• US Class Current: 455/67.7
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements

Abstract

Method and systems for reporting and analyzing link quality for radiocommunications are described. Use of frame erasure information (e.g., frame erasure rate (FER)) is highlighted. Presentation of frame erasure information can be segregated on a per-connection or per-cell basis, in addition to system-wide output. Moreover, frame erasure information can be correlated with geographical location of a mobile, the mobile'"'"'s handover status or the equipment type of the mobile station to provide the network operator with a better understanding of quality issues within the network.

Claims

1. A method for analyzing and presenting network quality in formation comprising the steps of:

gathering link quality information at a central node pertaining to a plurality of connections within a plurality of cells supported by said network;

selecting one of a plurality of display views including per-connection basis, per-cell basis and network-wide basis, and

displaying said link quality information using said selected view wherein said link quality information is transmitted, after decoding, to said central node and is based on signal quality.

2. The method of claim 1 further comprising the steps of:

correlating said link quality information to be selectively displayed with a geographical location of at least one mobile station; and

displaying said correlated link quality information.

3. The method of claim 1, further comprising the steps of:

correlating said link quality information to be selectively displayed with a handover status of at least one mobile station; and

displaying said correlated link quality information.

4. The method of claim 1, further comprising the steps of:

correlating said link quality information to be selectively displayed with equipment type of at least one mobile station; and

displaying said correlated link quality information.

5. The method of claim 1, wherein said step of gathering further comprises:

gathering frame erasure information.

6. The method of claim 5, wherein said frame erasure information includes a time distribution of said frame erasures.

7. A method for outputting quality information comprising the steps of:

receiving, at a central node, link quality information associated with a link between a base station and a mobile station at a first level; and

outputting, at a network operator terminal, said link quality information at a second level different from said first level, said second level derived from said link quality information received at said first level;

wherein said first level is higher than said second level and said method further comprises the step of;

estimating said link quality information at said second level using said link quality information at said first level and at least one other network parameter.

8. The method of claim 7, wherein said first level is on a per connection basis.

9. The method of claim 7, wherein said first level is on a per cell basis.

10. The method of claim 7, wherein said second level is on a per connection basis.

11. The method of claim 7, wherein said first second is on a per cell basis.

12. The method of claim 7, wherein said second level is on a per system-wide basis.

13. A method for outputting quality information comprising the steps of:

receiving, at a central node, link quality information associated with a link between a base station and a mobile station at a first level; and

outputting, at a network operator terminal, said link quality information at a second level different from said first level, said second level derived from said link quality information received at said first level;

wherein said first level is higher than said second level and said method further comprises the step of;

estimating said link quality information at said second level using said link quality information at said first level and at least one other network parameter;

wherein said at least one other network parameter includes at least one of network loading, cell identity, mobile station location, time of day and mobile station speed.