System and method for optimally transmitting acknowledge back responses

• US 5,005,014 A
• Filed: 05/22/1989
• Issued: 04/02/1991
• Est. Priority Date: 05/22/1989
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Jasinski, Leon
• Primary Examiner(s): Weldon, Ulysses
• Application Number:
  US07/354,568
• Time in Patent Office: 680 Days
• Field of Search: 340/825.05, 340/825.08, 340/825.22, 340/825.44-825.48, 340/825.54, 370/85.4, 370/85.5, 370/85.6, 370/85.8, 379/58, 379/59, 455/38, 455/73, 455/88, 455/89, 455/54, 455/134
• US Class Current: 340/7.25
• CPC Class Codes: G08B 3/1016 using wireless transmission calling systems using transmission by inductive loop H04B5/00
• CPC Class Codes: H04W 84/025 with acknowledge back capability

Abstract

A method for providing system acknowledge back responses from a plurality of remote stations to a central station is provided. The system acknowledge back responses include a predetermined station identification number assigned to each remote station and any individual acknowledge back responses received by each remote station from a plurality of portable communication receivers. The station identification number assigned to each remote station begins with a first station number and ends with a last station number in a predetermined sequential order. The method provides a start signal being first generated by the central station to initiate the transmission of the system acknowledge back responses from each of the plurality of remote stations. The transmissions begin from the first station in response to the first station receiving the start signal, and from each subsequent remote station in the predetermined sequential order in response to each subsequent station in the predetermined sequential order receiving the predetermined station identification number of the previous remote station. The central station, or a previous remote station may repeat the station identification number of the previous station when a subsequent station fails to respond, thereby insuring a reliable transmission of acknowledge back responses from the remote stations to the central station.

Claims

1. A method for providing system acknowledge back responses from a plurality of remote stations to a central station, the system acknowledge back responses including a predetermined station identification number assigned to each remote station and any individual acknowledge back responses received by each remote station from a plurality of portable communication receivers operating in the system, the station identification numbers being assigned to each remote station beginning with a first remote station number and ending with a last remote station number in a predetermined sequential order, said method comprising the steps of:

generating a start signal and transmitting the same from the central station to initiate the transmission of system acknowledge back responses from the plurality of remote stations;

transmitting, from the first remote station, the system acknowledge back response in response to the first remote station receiving the start signal;

transmitting, from each subsequent remote station in the predetermined sequential order, the system acknowledge back response in response to the subsequent remote station receiving the predetermined station identification number of the previous remote station;

monitoring the progression of transmitted system acknowledge back responses at a selected station from the remote station in the predetermined sequential order; and

generating and transmitting from the selected station, a request to acknowledge which includes the predetermined station identification number of the previous remote station in response to subsequent remote station failing to respond in the predetermined sequential order within a predetermined time interval.

2. The method for providing system acknowledge back responses according to claim 1, wherein said selected station is the central station.

3. The method for providing system acknowledge back responses according to claim 2, said method further comprising the steps of:

monitoring the transmitted system acknowledge back response at the central station from the subsequent remote station which previously failed to respond;

repeating, from the central station, the request to acknowledge in response to the subsequent remote station continuing to fail to respond within the predetermined time interval; and

transmitting, from the central station, the predetermined station identification number of the subsequent remote station in response to the subsequent remote station failing to respond within a predetermined number of requests to acknowledge.

4. The method for providing system acknowledge back responses according to claim 1, wherein said selected station is the previous remote station in the predetermined sequential order of response.

5. The method for providing system acknowledge back responses according to claim 4, said method further comprising the steps of:

monitoring the transmitted system acknowledge back response at the previous remote station and the central station from the subsequent remote station which previously failed to respond;

transmitting from the previous remote station in the predetermined sequential order the request to acknowledge in response to the subsequent remote station failing to respond within a predetermined period of time; and

transmitting from the central station the predetermined station identification number of the subsequent station which fails to respond within a predetermined number of requests to acknowledge.

6. The method for providing system acknowledge back responses according to claim 4, said method further comprising the steps of:

monitoring the transmitted system acknowledge back responses at the previous remote station for the system acknowledge back response from the subsequent remote station in the predetermined sequential order; and

transmitting from the next subsequent remote station in the predetermined sequential order the system acknowledge back response in response to the subsequent remote station failing to respond within a predetermined number of requests to acknowledge.

7. A system for providing system acknowledge back responses from a plurality of remote stations to a central station, the system acknowledge back responses including a predetermined station identification number assigned to each remote station and any individual acknowledge back responses received by each remote station from a plurality of portable communication receivers operating in the system, the station identification numbers being assigned to each remote station beginning with a first remote station number and ending with a last remote station number in a predetermined sequential order, said system comprising:

means for generating a start signal and transmitting the same from the central station to initiate the transmission of system acknowledge back responses from the plurality of remote stations;

means for transmitting, from the first remote station, the system acknowledge back response in response to the first station receiving the start signal;

means for transmitting, from each subsequent remote station in the predetermined sequential order, the system acknowledge back response in response to each subsequent remote station receiving the predetermined station identification number of the previous remote station; and

means for monitoring the progression of transmitted system acknowledge back responses at a selected station from the remote stations in the predetermined order; and

means for generating and transmitting, from the selected station, a request to acknowledge which includes the predetermined station identification number of the previous remote station in response to subsequent remote station failing to respond in the predetermined sequential order within a predetermined time interval.

8. The system for providing system acknowledge back responses according to claim 7 wherein said selected station is the central station.

9. The system for providing system acknowledge back responses according to claim 8, further comprising means for repeating the transmission of the request to acknowledge from the central station, wherein

said means for monitoring at the central station monitors the transmitted system acknowledge back response from the subsequent remote station which previously failed to respond;

said means for repeating the transmission from the central station, repeats the transmission of the request for acknowledge in response to the subsequent remote station continuing to fail to respond within the predetermined time interval; and

said means for generating and transmitting the request to acknowledge from the central station, further generates and transmits the predetermined station identification number of the subsequent remote station in response to the subsequent remote station failing to respond within a predetermined number of requests to acknowledge.

10. The system for providing system acknowledge back responses according to claim 7, wherein the selected station is the previous remote station in the predetermined sequential order of response.

11. The system for providing system acknowledge back responses according to claim 10, wherein

said means for monitoring, monitors the transmitted system acknowledge back response by the previous remote station and the central station from the subsequent remote station which previously failed to respond;

said means for transmitting from a remote station, transmits from the previous remote station in the predetermined sequential order the request to acknowledge in response to the subsequent remote station failing to respond within a predetermined period of time; and

said means for generating and transmitting the request to acknowledge from the central station, further generates and transmits the predetermined station identification number of the subsequent station failing to respond within a predetermined number of requests to acknowledge.

12. The method for providing system acknowledge back responses according to claim 10, further comprising:

means for monitoring the transmitted system acknowledge back responses at the previous remote station for the system acknowledge back response from the subsequent remote station in the predetermined sequential order; and

means for transmitting from the next subsequent remote station in the predetermined sequential order the system acknowledge back response in response to the subsequent remote station failing to respond within a predetermined number of requests to acknowledge.

13. A remote station, for providing a system acknowledge back response, the remote station operating in a system having a central station and a plurality of remote stations, said remote station comprising:

an acknowledge back receiver, for receiving coded acknowledge back responses from a plurality of portable communication receivers;

means for storing the received coded acknowledge back responses and a predetermined station identification number assigned to each remote station in a predetermined sequential order for identifying the remote station, to provide system acknowledge back response information;

a channel monitor receiver, for receiving a control signal from the central station and the system acknowledge back responses from other remote stations;

a first decoder, responsive to the control signal and system acknowledge back responses to recover the station identification numbers;

a transmitter, coupled to said storing means, for transmitting the stored system acknowledge back response information; and

a controller, coupled to said transmitter and to said storing means, for effecting the transmission of the system acknowledge back response information in response to the recovered station identification number corresponding to the previous station identification number of the predetermined sequential order.

14. The remote station according to claim 13, further comprising:

a second decoder, coupled to said acknowledge back receiver, for decoding the coded acknowledge back responses to recover receiver acknowledge back response information;

an encoder, coupled to said second decoder, for encoding the receiver acknowledge back response information into coded acknowledge back responses.

15. The remote station according to claim 14, wherein said second decoder further error corrects the receiver acknowledge back response information.