Radio trunking fault detection system
First Claim
1. A digitally trunked radio communications system of the type having a control channel and plural working channels, said working channels being temporarily assigned for communication by radio units in response to digital control signals passed over said control channel, a method of testing the operation of said system comprising:
- (a) continually monitoring digital control messages passed over said control channel with a testing radio transceiver;
(b) controlling, from a site controller, initiation of a test call sequence provided by said testing radio transceiver, including the steps of (b1) generating a test call message at said site controller, (b2) providing said generated test call message to said testing radio transceiver by passing said test call message from said site controller to said testing transceiver over a digital signal link connecting said testing transceiver to said site controller, and (b3) transmitting a digital call message over said control channel with said testing transceiver in response to said test call message provided to said testing transceiver, said call message requesting a working channel;
(c) receiving a working channel assignment message passed over said control channel;
(d) in response to receipt of said working channel assignment message, performing the following steps;
(1) tuning said testing transceiver to a working channel specified by said working channel assignment message,(2) monitoring high speed signaling passed over said working channel,(3) transmitting low-speed signaling over said working channel,(4) monitoring low-speed signaling passed over said working channel, and(5) receiving a drop channel message passed over said working channel; and
(e) applying a called results message indicating results of said step (d) monitoring to said site controller via said digital signal link.
4 Assignments
0 Petitions
Accused Products
Abstract
A radio frequency repeater system includes a independent error detection units which detect redundant and overlapping error conditions of the RF repeater stations. The error detection units notify the site controller and/or a system manager of the error conditions, and the failed repeater stations are removed from active service. The error detection units are then used to simulate actual service for the failed stations so that the stations can be placed back into service once they being operating properly again. Because the error detection units operate independently of the other components in the repeater system they can be used to trigger failure recovery mechanisms without becoming ineffective due to failure of other components.
49 Citations
7 Claims
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1. A digitally trunked radio communications system of the type having a control channel and plural working channels, said working channels being temporarily assigned for communication by radio units in response to digital control signals passed over said control channel, a method of testing the operation of said system comprising:
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(a) continually monitoring digital control messages passed over said control channel with a testing radio transceiver; (b) controlling, from a site controller, initiation of a test call sequence provided by said testing radio transceiver, including the steps of (b1) generating a test call message at said site controller, (b2) providing said generated test call message to said testing radio transceiver by passing said test call message from said site controller to said testing transceiver over a digital signal link connecting said testing transceiver to said site controller, and (b3) transmitting a digital call message over said control channel with said testing transceiver in response to said test call message provided to said testing transceiver, said call message requesting a working channel; (c) receiving a working channel assignment message passed over said control channel; (d) in response to receipt of said working channel assignment message, performing the following steps; (1) tuning said testing transceiver to a working channel specified by said working channel assignment message, (2) monitoring high speed signaling passed over said working channel, (3) transmitting low-speed signaling over said working channel, (4) monitoring low-speed signaling passed over said working channel, and (5) receiving a drop channel message passed over said working channel; and (e) applying a called results message indicating results of said step (d) monitoring to said site controller via said digital signal link. - View Dependent Claims (2, 3, 4, 5)
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6. A digitally trunked radio communications system of the type having a control channel and plural working channels, said working channels being temporarily assigned for communication by radio units in response to digital control signals passed over said control channel, a method of testing the operation of said system comprising:
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(a) substantially continuously monitoring digital control messages passed over said control channel with a testing radio transceiver; (b) in response to a receipt of a test call message passed over a digital signal link connecting said testing transceiver to a site controller, transmitting a digital call message over said control channel with said testing transceiver, said call message requesting a working channel; (c) receiving a working channel assignment message passed over said control channel; (d) in response to receipt of said working channel assignment message, performing the following steps; (1) tuning said testing transceiver to a working channel specified by said working channel assignment message, (2) monitoring high speed signaling passed over said working channel, (3) transmitting low-speed signaling over said working channel, (4) monitoring low-speed signaling passed over said working channel, and (5) receiving a drop channel message passed over said working channel; and (e) applying a called results message indicating results of said step (d) to said site controller via said digital signal link; wherein said applying step (e) includes generating a called results digital message including the following; a T5 value specifying whether said receiving step (c) received said working channel assignment message; a T4 value specifying whether said monitoring step (2) successfully monitored said working channel high-speed signaling; a T3 value specifying whether said monitoring step (4) successfully monitored said working channel low-speed signaling; and a T2 value specifying whether said receiving step (5) successfully received said dropped channel message. - View Dependent Claims (7)
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Specification