Method and apparatus for identifying an inbound message in a radio communication system

• US 5,649,302 A
• Filed: 12/27/1994
• Issued: 07/15/1997
• Est. Priority Date: 12/27/1994
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Khan, Malik, Ayerst, Douglas Irvin, Rudowicz, Michael James
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): Vo, Nguyen
• Application Number:
  US08/364,343
• Time in Patent Office: 931 Days
• Field of Search: 455/33.1, 455/38.1, 455/38.2, 455/54.1, 455/54.2, 455/53.1, 455/32.1, 455/38.4, 455/88, 340/825.44, 340/311.1
• US Class Current: 370/313
• CPC Class Codes: H04W 84/025 with acknowledge back capability
• CPC Class Codes: H04W 88/185 Selective call encoders for paging networks, e.g. paging centre devices

Abstract

A system controller (102) schedules an outbound selective call address (410) and an outbound message (430) at a position within a transmission cycle (330) of a synchronous outbound signaling protocol. The position and the outbound selective call address (410) are stored and linked to each other. The transmission cycle (330) is transmitted. A selective call transceiver (106) receives the transmission cycle (330), recovers the outbound message (430), and generates a response signal which includes an inbound address. The inbound address is determined from the position of the outbound selective call address (410) within the transmission cycle and is included in an inbound message which is transmitted. The system controller (102) recovers the inbound message, determines the position from the inbound address, and identifies the inbound message as being associated with the selective call transceiver (106) by the linking of the position to the outbound selective call address (410) stored within the system controller (102).

Claims

1. A method for use in a radio communication system having a synchronous outbound signaling protocol, the method comprising,

within a system controller, the steps of:

scheduling an outbound selective call address and an outbound message, wherein each is scheduled at a position within a transmission cycle of the synchronous outbound signaling protocol which is uniquely identifiable;

storing the outbound selective call address and the outbound message, and storing the position of a predetermined one of the outbound selective call address and the outbound message; and

transmitting the outbound selective call address and the outbound message within the transmission cycle,

wherein the method further comprises, within a selective call transceiver having at least one embedded selective call address, the steps of;

receiving the transmission cycle;

generating within the selective call transceiver an inbound address when the outbound selective call address matches a predetermined portion of one of the at least one embedded selective call address, the inbound address being determined from the position within the transmission cycle of the predetermined one of the outbound selective call address and the outbound message;

including the inbound address in an inbound message when the inbound message is transmitted within a predetermined response period after the outbound message is received; and

transmitting the inbound message, and

wherein the method further comprises, within the system controller, the steps of;

receiving the inbound message; and

identifying the inbound message based on the inbound address included in the inbound message and the position within the transmission cycle which is stored in said step of storing.

2. The method according to claim 1, wherein the position is linked with the outbound message in said step of storing, and wherein said step of identifying the inbound message comprises the steps of:

determining the position from the inbound address; and

identifying the inbound message as being associated with the outbound message by the linking of the position to the outbound message stored in the system controller.

3. The method according to claim 1, wherein the position is linked with the outbound selective call address in said step of storing, and wherein said step of identifying the inbound message comprises the steps of:

determining the position from the inbound address; and

identifying the inbound message as being associated with the selective call transceiver by the linking of the position to the outbound selective call address stored in the system controller.

4. The method according to claim 1, wherein a vector is scheduled within the transmission cycle of the synchronous outbound signaling protocol, and wherein, in said step of storing a position of the vector is stored, and wherein the inbound address is determined from the position of the vector in said step of generating.

5. The method according to claim 1, wherein the position is identified by a position identity of at least one of a group of protocol divisions of the synchronous outbound signaling protocol in said steps of storing and generating.

6. The method according to claim 5, wherein the group of protocol divisions comprises of a cycle, a frame, a block, and a word of a FLEX™

protocol.

7. The method according to claim 5, wherein the group of protocol divisions comprises of a cycle, a subsequence, a batch, and a word of an ERMES protocol.

8. The method according to claim 1, wherein the predetermined one of the outbound selective call address and the outbound message is the outbound selective call address in said step of storing, and wherein the position is identified by a sequential position of the outbound selective call address among all other outbound selective call addresses included in the transmission cycle in said steps of storing and generating.

9. A radio communication system comprising:

a system controller for generating a synchronous outbound signaling protocol, the system controller comprising;

a scheduler for scheduling an outbound selective call address and an outbound message included within a transmission cycle of the synchronous outbound signaling protocol, wherein the outbound selective call address is scheduled at a position within the transmission cycle, the position identified by unique identities of protocol divisions of the synchronous outbound signaling protocol;

a memory, coupled to the scheduler, for storing the position and the outbound selective call address, and for linking the position with the outbound selective call address; and

a cell site controller, coupled to said scheduler, for controlling a transmitter which transmits the transmission cycle; and

a selective call transceiver having at least one embedded selective call address stored therein, comprising;

a receiver for receiving the transmission cycle;

a controller, coupled to said receiver, for recovering the outbound message included in the transmission cycle, for generating a response signal when the outbound selective call address matches a predetermined portion of one of the at least one embedded selective call address, and for identifying the position within the transmission cycle at which a predetermined one of the outbound message and outbound selective call address is located;

an alert device, coupled to said controller, for generating a sensible alert in response to the response signal;

a response element, coupled to the controller, for generating a inbound address in response to the response signal, wherein the inbound address is determined from the position of one of the outbound message and the outbound selective call address within the transmission cycle, and for including the inbound address in an inbound message when the inbound message is transmitted within a predetermined response period after the outbound message is received; and

a transmitter, coupled to said response element, for transmitting the inbound message, and

wherein the system controller further comprises a response identifier, coupled to said memory and said cell site controller, said cell site controller for receiving the inbound message, and said response identifier for determining the position within the transmission cycle from the inbound address and identifying the inbound message as being associated with the selective call transceiver by the linking of the position within the synchronous outbound signaling protocol to the outbound selective call address.

10. A system controller used in a radio communication system for generating a synchronous outbound signaling protocol, the system controller comprising:

a scheduler for scheduling an outbound selective call address and an outbound message included within a transmission cycle of the synchronous outbound signaling protocol;

a memory, coupled to the scheduler, for storing a position of a predetermined one of the outbound selective call address and the outbound message;

a cell site controller, coupled to said scheduler and to a fixed transmitter and receiver, for controlling the fixed transmitter which transmits the transmission cycle and for receiving an inbound message transmitted by a selective call transceiver; and

a response identifier, coupled to said memory and said cell site controller, for determining the position from a inbound address included in the inbound message and identifying the inbound message based on the inbound address included in the inbound message and the position stored in said memory.

11. The system controller according to claim 10, wherein the outbound message is stored in said memory and the position is linked with the outbound message, and wherein said response identifier further comprises an outbound message element which identifies the inbound message as being associated with the outbound message by the linking of the position to the outbound message.

12. The system controller according to claim 10, wherein the outbound selective call address is stored in said memory and the position is linked with the outbound selective call address, and wherein said response identifier further comprises a selective call transceiver element which identifies the inbound message as being associated with the selective call transceiver by the linking of the position to the outbound selective call address.

13. The system controller according to claim 10, wherein said scheduler further comprises a vector element which schedules a vector within the transmission cycle of the synchronous outbound signaling protocol, and wherein a position of the vector is stored in said memory.

14. The system controller according to claim 10, wherein said scheduler comprises a division identifier element which identifies the position by a position identity of at least one of a group of protocol divisions.

15. The system controller according to claim 14, wherein the group of protocol divisions consists of a cycle, a frame, a block, and a word of a FLEX™

protocol and the position identity of each of the at least one of a group of protocol divisions is a number.

16. The system controller according to claim 14, wherein the group of protocol divisions consists of a cycle, a subsequence, a batch, and a word of an ERMES protocol and the position identity of each of the at least one of a group of protocol divisions is one of a number and a letter.

17. The system controller according to claim 10, wherein the position of the predetermined one of the outbound selective call address and the outbound message stored in said memory is the position of the outbound selective call address, and wherein said scheduler comprises a sequence identifier element which identifies the position by a sequential position of the outbound selective call address among all other outbound selective call addresses included in the transmission cycle.

18. A selective call transceiver for use in a radio communication system having a synchronous outbound signaling protocol, the selective call transceiver comprising:

a receiver for receiving an outbound selective call address and an outbound message included within a transmission cycle of the synchronous outbound signaling protocol;

a memory for storing at least one embedded selective call address;

a controller, coupled to said receiver and said memory, for recovering the outbound selective call address and outbound message, for generating a response signal when the outbound selective call address matches a predetermined portion of one of the at least one embedded selective call address, and for identifying a position of a predetermined one of the outbound selective call address and the outbound message within the transmission cycle;

an alert device, coupled to said controller, for generating a sensible alert in response to the response signal;

a response element, coupled to the controller, for generating a inbound address in response to the response signal, wherein the inbound address is determined from the position, and for including the inbound address in an inbound message when the inbound message is transmitted within a predetermined response period after the outbound message is received; and

a transmitter, coupled to said response element, for transmitting the inbound message.

19. The selective call transceiver according to claim 18, wherein a vector is included within the transmission cycle of the synchronous outbound signaling protocol, and wherein the controller comprises a vector element which identifies a position of the vector, and wherein the inbound address is determined by the position of the vector.

20. The selective call transceiver according to claim 18, wherein said controller comprises a division identifier which identifies the position by a position identity of at least one of a group of protocol divisions of the synchronous outbound signaling protocol.

21. The selective call transceiver according to claim 20, wherein the group of protocol divisions consists of a cycle, a frame, a block, and a word of a FLEX™

protocol and the position identity of each of the at least one of a group of protocol divisions is a number.

22. The selective call transceiver according to claim 20, wherein the group of protocol divisions consists of a cycle, a subsequence, a batch, and a word of an ERMES protocol and the position identity of each of the at least one of a group of protocol divisions is one of a number and a letter.

23. The selective call transceiver according to claim 18, wherein said controller comprises a sequence identifier which identifies the position by a sequential position of the outbound selective call address among all other outbound selective call addresses included in the transmission cycle.