Method for increasing battery life for selective call receivers

• US 5,382,949 A
• Filed: 02/01/1993
• Issued: 01/17/1995
• Est. Priority Date: 02/01/1993
• Status: Expired due to Term

• Current Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Mock, Von A., Eaton, Eric T.
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): MERZ, EDWARD W
• Application Number:
  US08/011,614
• Time in Patent Office: 715 Days
• Field of Search: 340/825.44, 379/59, 455/33.1, 455/38.3, 455/343
• US Class Current: 340/7.28
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 88/022 Selective call receivers
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A selective call receiver system (150, 200) includes a base site (150) which transmits paging information (100) having a plurality of batches (1-to-N). The base site (150) comprises timer (266) for calculating a time between a first of the at least two successive paging transmissions, and counter (266) for counting a number of batches to be transmitted in the at least two successive paging transmissions. A base site processor (254), coupled to the timer/counter (266), processes the paging information. The base site processor (254) comprises encoder (262) for encoding a portion of the first of the at least two successive paging transmissions with the calculated time and the number batches to be transmitted in the first paging transmission. A base site transmitter (252), coupled to the base site processor (254), transmits the at least two successive paging transmissions according to the calculated time to a plurality of selective call receivers (200). The selective call receiver (200) comprises a receiver (204) for receiving the paging transmissions. Decoder (206), coupled to the receiver (204)s, for decoding the number of batches (1-to-N) being transmitted therein and the time to a next paging transmission. Power switch (210), coupled the decoder, for disabling and enabling a power supply to the receiver (204) for receiving an assigned frame (F0-F7) of the plurality of batches (1-to-N). The power switch (210), being further responsive to the plurality of batches being decoded, disables and enables the power supply to the receiver for receiving successive paging transmissions.

Claims

1. A selective call receiver system including a base site capable of transmitting paging information having a plurality of batches in a paging transmission wherein successive paging transmissions being transmitted within a fixed time period, the base site comprising:

means for counting the plurality of batches to be transmitted in a first of at least two successive paging transmissions and assigning a number thereto;

means, coupled to the means for counting, for calculating a time between an end of the plurality of batches to be transmitted in the first of the at least two paging transmissions to a start of a next successive paging transmission;

base site processing means, coupled to the calculating means and the counting means, for processing the paging information, said base site processing means comprising;

means for encoding a portion of at least the first of the at least two successive paging transmissions with the calculated time and the number to be transmitted in the first paging transmission; and

base site transmitting means, coupled to the base site processing means, for transmitting the at least two successive paging transmissions according to the fixed time period to a plurality of selective call receivers;

the selective call receivers, comprising;

means for receiving the paging transmissions;

means, coupled to the receiving means, for decoding the number being transmitted therein and the calculated time indicating the time after the transmission of the plurality of batches to the next successive paging transmission; and

means, coupled the decoding means, for disabling and enabling a power supply to said receiving means for receiving an assigned frame of the plurality of batches;

said disabling and enabling means, being further responsive to the plurality of batches being decoded, for disabling said power supply to said receiving means for the calculated time until the next successive paging transmission.

2. The selective call receiver system according to claim 1 wherein the encoding means encodes the preamble in alternating one/zero bit pattern at a first bit rate.

3. The selective call receiver system according to claim 1 wherein the base site transmitting means continually transmits paging information, and wherein a predetermined idle pattern is transmitted during a time interval between successive transmissions.

4. The selective call receiver system according to claim 3 wherein the encoding means encodes the paging information at a predetermined baud rate, and encodes a predetermined idle pattern in an alternating one/zero pattern at a baud rate less than the predetermined baud rate of the encoded paging information.

5. The selective call receiver system according to claim 4 wherein the idle pattern baud rate is three hundred bits-per-second for a five-hundred and twelve bits-per-second encoded paging information baud rate.

6. The selective call receiver system according to claim 4 wherein the idle pattern baud rate is seven hundred and fifty bits-per-second for a twelve hundred bits-per-second encoded paging information baud rate.

7. The selective call receiver system according to claim 1 wherein the base site transmitting means terminates transmission during a time interval between transmissions of the at least two successive paging transmissions.

8. A base site capable of transmitting paging information having a plurality of batches in a paging transmission wherein successive paging transmissions being transmitted within a fixed time period, the base site, comprising:

means for counting the plurality of batches to be transmitted in a first of at least a first of the at least two successive paging transmissions and assigning a number thereto;

means, coupled to the means for counting, for calculating a time between an end of the plurality of batches to be transmitted in the first of the at least two paging transmissions to a start of a next successive paging transmission;

means, coupled to the calculating means and the counting means, for processing the paging information, said processing means comprising;

means for encoding a portion of at least the first of the at least two successive paging transmissions with the calculated time and the number being transmitted therein; and

transmitting means, coupled to the processing means, for transmitting the at least two successive paging transmission according to the fixed time period to a plurality of selective call receivers.

9. The base site according to claim 8 wherein the encoding means encodes the preamble in alternating one/zero bit pattern at a first bit rate.

10. The base site according to claim 8 wherein the transmitting means continually transmits paging information, and transmit a predetermined idle pattern during a time interval between successive transmissions.

11. The base site according to claim 8 wherein the encoding means encodes the paging information at a predetermined baud rate, and encodes a predetermined idle pattern in an alternating one/zero pattern at a baud rate less than the predetermined baud rate of the encoded paging information.

12. The base site according to claim 11 wherein the transmitting means transmits the idle pattern baud rate at three hundred bits-per-second when transmitting a five hundred and twelve bits-per-second encoded paging information baud rate.

13. The selective call receiver system according to claim 11 wherein the transmitting means transmits the idle pattern baud rate at seven hundred and fifty bits-per-second when transmitting a twelve hundred bits-per-second encoded paging information baud rate.

14. The selective call receiver system according to claim 8 wherein the base site transmitting means terminates transmission during a time interval between transmissions of the at least two successive paging transmissions.

15. A selective call receiver capable of receiving paging transmissions being transmitted within a fixed time period having a plurality of batches, comprising:

means for receiving the paging transmissions;

means, coupled to the receiving means, for decoding a number encoded in the paging transmission indicative of the number of batches being transmitted therein, and a time encoded in said paging transmission indicative of the time from said plurality of batches of said paging transmission to a next paging transmission; and

means, coupled to the decoding means, for disabling and enabling a power supply to said receiving means for receiving an assigned frame of the plurality of batches;

said disabling and enabling means, responsive to the plurality of batches being decoded, for disabling said power supply to said receiving means during the time from said plurality of batches to the next successive paging transmission.

16. The selective call receiver according to claim 15 wherein the receiving means is capable of receiving a first and second paging transmissions at a first and second baud rates.

17. In a selective call receiver system including a base site capable of transmitting paging information having a plurality of batches in a paging transmission wherein successive paging transmissions being transmitted within a fixed time period, a method comprising the steps of:

(a) counting the plurality of batches to be transmitted in a first of at least two successive paging transmissions and assigning a number thereto;

(b) calculating a time between an end of the plurality of batches to be transmitted in the first of the at least two paging transmissions to a start of a next successive paging transmission;

(c) processing the paging information, said step of processing further comprising the steps of;

(d) encoding a portion of the first of the at least two successive paging transmissions with the calculated time and the number to be transmitted in the first paging transmission; and

(e) transmitting the at least two successive paging transmissions according to the calculated time to a plurality of selective call receivers;

said selective call receiver further comprising the steps of;

(f) receiving the paging transmissions;

(g) decoding the number being transmitted therein and the calculated time indicating the time after the transmission of the plurality of batches to the next successive paging transmission; and

(h) disabling and enabling a power supply to said receiving means for receiving an assigned frame of the plurality of batches wherein said step of disabling and enabling disables the power supply for the calculated time until the next successive paging transmission.

18. In a base site capable of transmitting paging information having a plurality of batches in a paging transmission wherein successive paging transmissions being transmitted within a fixed time period, a method comprising the steps of:

(a) counting the plurality of batches to be transmitted in at least a first of the at least two successive paging transmissions;

(b) calculating a time between an end of the plurality of batches to be transmitted in the first of the at least two paging transmissions to a start of a next successive paging transmission;

(c) processing the paging information, said step of processing further comprising the steps of;

(d) encoding a portion of at least a first of the at least two successive paging transmissions with the calculated time and the number being transmitted therein; and

(e) transmitting the at least two successive paging transmission according to the fixed time period to a plurality of selective call receivers.

19. In a selective call receiver capable of receiving paging transmissions being transmitted within a fixed time period having a plurality of batches, a method comprising the steps of:

(a) receiving the paging transmissions;

(b) decoding a number encoded in the paging transmission indicative of the number of batches being transmitted therein, and a time encoded in said paging transmission indicative of the time from said plurality of batches of said paging transmission to a next paging transmission; and

(c) disabling and enabling a power supply to said receiving means for receiving an assigned frame of the plurality of batches, said step of disabling and enabling disables the power supply to the receiving means during the time from said plurality of batches to the next successive paging transmission.

20. A selective call receiver system including a base site capable of transmitting paging information having a plurality of batches and an idle signal, the base site comprising:

a timer for calculating a time between two successive transmissions of the paging information;

a counter for counting a number of batches to be transmitted in a first of the two successive paging transmissions;

a base site processor, coupled to the timer and the counter, for processing the batches of paging information, said base site processor comprising;

means for organizing the paging information in the plurality of batches of the paging transmissions; and

an encoder for encoding a portion of the at least first of the at least two successive paging transmissions with the calculated time between the two successive paging transmissions an, d the number of batches to be transmitted in the first paging transmission; and

a base site transmitter, coupled to the base site processor, for transmitting the two successive paging transmissions according to the calculated time to a plurality of selective call receivers, said base site transmitter transmits the two successive paging transmissions at a first baud rate and an idle signal at a second baud rate lower than the first baud rate of the two successive paging transmissions;

at least one of the plurality of selective call receivers capable of receiving the paging transmissions at the first and second baud rate, said selective call receiver comprising;

a receiver for receiving the paging transmissions;

a decoder, coupled to the receiver, for decoding the batches of paging information of the received paging transmissions;

a controller, responsive to the decoder, for processing the batches of paging information, said controller being able to determine the number of batches being transmitted and the calculated time to a next paging transmission, and

power switch, coupled the decoder, for disabling and enabling a power supply to said receiver for receiving an assigned frame of the plurality of batches;

said power switch, being further responsive to the plurality of batches being decoded, for disabling the receiving means during transmission of the idle signal, and enabling said power supply to said receiver for receiving successive paging transmissions.