Method of controlling power supplied to RF receiver and paging receiver employing the same

• US 6,229,989 B1
• Filed: 07/07/1998
• Issued: 05/08/2001
• Est. Priority Date: 10/08/1997
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kwon, Tae-Youn
• Primary Examiner(s): Trost, William G.
• Assistant Examiner(s): Ferguson, Keith
• Application Number:
  US09/111,307
• Time in Patent Office: 1,036 Days
• Field of Search: 455/38.3, 455/38.1, 455/31.2, 455/31.3, 455/38.2, 455/343, 455/574, 455/422, 455/550, 455/572, 455/32.1, 340/825.44
• US Class Current: 340/7.33
• 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 method for controlling the power supplied to an RF receiver in a paging receiver is provided. The method includes the step of synchronizing the paging receiver with a paging system which periodically transmits paging data at specified repetitive intervals. The paging data includes preamble data followed by batch data. Power is then periodically supplied to the RF receiver at the specified repetitive intervals. When the RF receiver is being supplied with the power, it is determined whether the RF receiver is receiving the preamble data. If the RF receiver is receiving the preamble data, then self frame data is detected from the batch data Next, it is checked whether information indicating an end of the batch data is being received. If the information is being received, then the power supplied to the RF receiver is cut off.

Claims

1. A method for controlling power supplied to an RF (Radio Frequency) receiver in a paging receiver, comprising the steps of:

a) pre-establishing a paging transmission time interval between all subsequent transmissions of paging data, said paging data comprising preamble data followed by batch data;

b) synchronizing a paging system so that it transmits all said paging data at the pre-established paging transmission time intervals;

c) supplying power to the RF receiver for a test time interval, said test time interval being long enough to allow the RF receiver to receive data from the paging system and to allow a determination to be made whether the received data is preamble data;

d) synchronizing the paging receiver with the pre-established paging transmission time intervals of the paging system, when the received data is the preamble data; and

e) supplying the power to the RF receiver at the pre-established paging transmission time intervals in order to receive the paging data, after the paging receiver has been synchronized with the paging system.

2. The method of claim 1, wherein said supplying step (c) further comprises the steps of:

blocking the power to the RF receiver for a test block time interval which is less than a transmission time interval of the preamble data; and

alternating between said steps of supplying and blocking the power until it is determined that the received data is preamble data, upon power-up of the paging receiver.

3. The method of claim 1, wherein said synchronizing step (d) further comprises the step of:

correcting a current time associated with the paging receiver.

4. The method of claim 3, wherein the current time is corrected to correlate the current time and the pre-established paging transmission time intervals during which the paging system periodically transmits the paging data.

5. The method of claim 1, further comprising the steps of:

f) detecting self frame data from batch data following the preamble data to process the detected frame data; and

g) detecting the end of the batch data.

6. A method for controlling a power supplied to an RF receiver in a paging receiver, comprising the steps of:

a) pre-establishing a paging transmission time interval between all subsequent transmissions of paging data, said paging data comprising preamble data followed by batch data;

b) synchronizing a paging system so that it transmits all said paging data at the pre-established paging transmission time intervals;

c) upon power-up of the paging receiver, repeatedly supplying and blocking the power to the RF receiver for a test and a test block time interval, respectively;

d) determining whether preamble data is being received, when the power is being supplied to the RF receiver in step (c);

e) synchronizing, if it is determined in step (d) that preamble data is being received, the paging receiver with the pre-established paging transmission time intervals of the paging system;

f) detecting, if it is determined that preamble data is being received, self frame data from batch data following the preamble data to process the detected self frame data;

g) checking, if it is determined that preamble data is being received, whether information indicating an end of the batch data is being received; and

h) cutting off the power supplied to the RF receiver, when the information of step (g) is received.

7. The method of claim 6, wherein the test time interval is long enough to allow the RF receiver to receive data from the paging system and to allow a determination to be made whether the received data is the preamble data.

8. The method of claim 6, wherein the test block time interval is less than a transmission time interval of the preamble data.

9. The method of claim 6, further comprising the steps of:

periodically supplying the power to the RF receiver at the pre-established paging transmission time intervals;

determining whether the RF receiver is receiving preamble data, when the RF receiver is being periodically supplied with the power; and

repeating steps (f) through (h), when the RF receiver is receiving the preamble data.

10. A method for controlling power supplied to an RF (Radio Frequency) receiver in a paging receiver, said paging receiver receiving paging data, said paging data comprising preamble data followed by batch data, comprising the steps of:

a) pre-establishing a paging transmission time interval between all subsequent transmissions of paging data;

b) synchronizing the paging receiver with a paging system which periodically transmits paging data at established paging transmission time intervals;

c) periodically supplying power to the RF receiver at the established paging transmission time intervals;

d) determining whether the RF receiver is receiving preamble data, when the RF receiver is being supplied with power;

e) detecting self frame data from the batch data, when the RF receiver is receiving preamble data;

f) checking whether information indicating an end of the batch data is being received; and

g) cutting off the power supplied to the RF receiver, when the information indicating the end of the batch data is received.

11. A paging receiver comprising:

an RF receiver for receiving paging data transmitted from a paging system which periodically transmits the paging data at pre-established paging transmission time intervals, the paging data including preamble data followed by batch data;

a decoder for decoding the received paging data;

a means for connecting/disconnecting a power supplying path to said RF receiver according to a power control signal; and

a controller for processing the decoded paging data, for synchronizing the paging receiver to the paging system, and for generating the power control signal so that power is supplied to the RF receiver at the pre-established paging transmission time interval and the power is blocked when an end of the batch is detected;

synchronizing the paging system so that it transmit all said paging data at the pre-established paging transmission time interval;

supplying power to the RF receiver for a test time interval, said test time interval being long enough to allow the RF receiver to receive data from the paging system and to allow a determination to be made whether the received data is preamble data; and

synchronizing the paging receiver with the pre-established paging transmission time interval of the paging system, when the received data is the preamble data.