Method for determining low signal quality communications

• US 5,490,288 A
• Filed: 02/08/1994
• Issued: 02/06/1996
• Est. Priority Date: 02/08/1994
• Status: Expired due to Term

• Current Assignee: CDC Propriete Intellectuelle
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Wiatrowski, David G.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): Nguyen, Lee
• Application Number:
  US08/196,614
• Time in Patent Office: 728 Days
• Field of Search: 455/33.1, 455/54.1, 455/54.2, 455/67.1, 455/69, 455/67.3, 455/67.7, 455/70, 455/56.1, 455/8, 455/9, 455/115, 455/226.1, 455/226.2, 455/226.3, 379/59, 379/60, 379/10, 379/11
• US Class Current: 455/517
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 64/003 locating network equipment

Abstract

In a communication system 100, failures can be determined without field testing in the following manner. For each transmission, a communication unit 104 determines the signal quality of the transmission. When the signal quality of the transmission is unfavorable, the communication unit 104 determines its location within the communication system 100 and the time the transmission was transmitted. Having stored this information, the communication unit 104 transmits it to a communication resource allocator 101. Upon receiving this information, the communication resource allocator 101 determines a cause for the unfavorable signal quality.

Claims

1. In a communication system that includes a plurality of communication units, a limited number of communication resources that are transceived via broadcast units, and a communication resource allocator, a method for identifying low signal quality communications, the method comprises the steps of:

a) monitoring, by a communication unit of the plurality of communication units, signal quality of transceived communications to and from the communication unit;

b) determining, by the communication unit, whether any of the transceived communications have an unfavorable signal quality level to produce an unfavorable transceived communication;

c) when the unfavorable transceived communication is determined, determining, by the communication unit, location of the communication unit and transmitting time of day, including the date of the unfavorable transceived communication;

d) storing, by the communication unit, the location of the communication unit, the transmitting time of day, including the date, and signal quality level of the unfavorable transceived communication to produce stored signal quality information;

e) transmitting, by the communication unit, the stored signal quality information to the communication resource allocator; and

f) determining, by the communication resource allocator, a cause for the unfavorable signal quality level of the transceived communication, such that the low signal quality communications are identified.

2. In the method of claim 1, step (a) further comprises, receiving, from a broadcast unit of the broadcast units, an indication of the signal quality of transmitted portions of the transceived communications.

3. In the method of claim 2, step (b) further comprises verifying that the determination of the signal quality level was done when the communication unit was transmitting at a predetermined power level.

4. In the method of claim 3, step (d) further comprises storing Bit Error Rate (BER) information and a signal strength level indication as at least part of the stored signal quality information.

5. In the method of claim 4, step (e) further comprises transmitting the stored signal quality information via a communication resource of the limited number of communication resources.

6. In the method of claim 1, step (b) further comprises verifying that the determination of the signal quality level was done when the communication unit was transmitting at a predetermined power level.

7. In the method of claim 1, step (d) further comprises storing Bit Error Rate (BER) information and a signal strength level indication as at least part of the stored signal quality information.

8. In the method of claim 1, step (e) further comprises transmitting the stored signal quality information via a communication resource of the limited number of communication resources.

9. In the method of claim 1, step (e) further comprises transmitting the stored signal quality information via a wireline link.

10. In a communication system that includes a plurality of communication units, a limited number of communication resources that are transceived via broadcast units, and a communication resource allocator, a method for identifying low signal quality communications, the method comprises the steps of:

a) receiving, by the communication resource allocator, signal quality information of transceived communications from a communication unit of the plurality of communication units, wherein the signal quality information includes location of the communication unit when a transceived communication having an unfavorable signal quality occurred and transmitting time of day, including the date, of the transceived communication;

b) storing, by the communication resource allocator, the signal quality information in a database; and

c) determining, by the communication resource allocator, a cause for the unfavorable signal quality level of the transceived communication based on the signal quality information.

11. In the method of claim 10, step (a) further comprises receiving the signal quality information via a communication resource of the limited number of communication resources.

12. In the method of claim 10, step (a) further comprises receiving the signal quality information via a wireline link.

13. In the method of claim 10, step (a) further comprises receiving the signal quality information from a set of communication units of the plurality of communication units.

14. In the method of claim 10, step (c) further comprises collating the signal quality information from the set of communication units and the communication unit to produce collated data.

15. In the method of claim 10, step (c) further comprises determining, based on the collated data, the cause to be geographical locations with low signal quality levels.