Dual event slotted paging

• US 7,555,302 B2
• Filed: 02/23/2007
• Issued: 06/30/2009
• Est. Priority Date: 05/30/1997
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gilhousen, Klein S., Butler, Brian K.
• Primary Examiner(s): SOBUTKA, PHILIP
• Application Number:
  US11/678,557
• Publication Number:
  US 20070149221A1
• Time in Patent Office: 858 Days
• Field of Search: 455/458, 455/450, 455/515, 455/517, 455/561, 455/466, 455/343.4, 370/465, 370/335, 370/342, 340/7.43, 340/7.44, 340/7.32
• US Class Current: 455/458
• CPC Class Codes: H04L 1/0017 where the mode-switching is based on Quality of Service requirement
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 68/025 Indirect paging
• CPC Class Codes: H04W 68/08 using multi-step notification by increasing the notification area
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A novel and improved method and system for paging a cellular telephone or other wireless terminal using two paging channels that reduces standby mode power consumption described. In one embodiment of the invention, a minimally encoded quick paging channel is established over which short, quick page messages are transmitted during one of a set of quick paging slots. The quick page message indicates that a communications request has been received, and that the receiving communication terminals should process a highly encoded full paging channel over which more detailed, full page messages are transmitted during the next full paging slot. A terminal monitors full paging channel only after a quick page message has been received on the quick paging channel.

Claims

1. A method for paging a wireless terminal in a wireless telecommunications system comprising:

transmitting a quick page message via a first encoded channel, said quick page message notifying the wireless terminal to begin monitoring a second encoded channel for a full page message, wherein said first encoded channel is less encoded than said second encoded channel;

transmitting a full page message via said second encoded channel;

wherein said second encoded channel includes more processing than said first encoded channel, wherein said more processing includes encoding through an encoder, interleaving through an interleaver, and adding cyclic redundancy check through a cyclic redundancy check circuit to said full page message;

wherein said wireless terminal is a particular wireless terminal included within a set of wireless terminals in said wireless communication system;

wherein said quick page message is for directing said set of wireless terminals to monitor said second encoded channel for said full page message;

wherein said quick page message contains less data bits than said full page message;

wherein said full page message identifies said particular wireless terminal among said set of wireless terminals;

wherein said transmitting said quick page message is during a first time slot assigned to the set of wireless terminals;

wherein said transmitting said full page message is during a second time slot assigned to the set of wireless terminals;

wherein said second time slot is assigned to said first time slot by way of having a determined time delay between said first and second time slots;

wherein said second time slot occurs after said first time slot;

wherein said quick page message is comprised of a single bit of data, wherein said single bit of data transmitted via said first encoded channel is modulated multiple times by the same code, effectively transmitting the bit multiple times in said transmitting said quick page message,

and wherein the set of wireless terminals assigned to said first paging slot changes over time to ensure that each wireless terminal is associated with a different set of other wireless terminals during each first paging slot,

wherein different sets of wireless terminals are assigned to different first paging slots, and

wherein a group of said first paging slots are assigned to a single second paging slot, said group of said first paging slots forming a quick page period beginning a fixed time before the beginning of the second paging slot.

2. The method as set forth in claim 1, wherein said second encoded channel is established via direct sequence modulation with a second channel code.

3. The method as set forth in claim 1 further comprising the steps of:

generating a quick page message before said step of transmitting said quick page message via said first encoded channel; and

generating a full page message before transmitting said full page message via said second encoded channel.

4. The method as set forth in claim 1 further comprising the steps of:

direct sequence spreading said full page message; and

direct sequence spreading said quick page message.

5. The method as set forth in claim 1 further comprising the steps of:

receiving said quick page message during said first time slot;

activating signal processing circuitry;

receiving said full page message during said second time slot and using said activated signal processing circuitry to process said full message.

6. The method as set forth in claim 5 wherein said signal processing circuitry is comprised of a trellis decoding system.

7. The method as set forth in claim 5 wherein said signal processing circuitry is comprised of a deinterleaver.

8. The method as set forth in claim 5 wherein said signal processing circuitry is comprised of a cyclical redundancy check circuit.

9. The method as set forth in claim 1, wherein said encoder is a convolutional encoder.

10. A method for paging a wireless terminal in a wireless telecommunications system comprising:

receiving a quick page message via a first encoded channel, said quick page message notifying the wireless terminal to begin monitoring a second encoded channel for a full page message, wherein said first encoded channel is less encoded than said second encoded channel;

receiving a full page message via said second encoded channel;

wherein said receiving said full page message includes more processing than said receiving said quick page message, wherein said more processing includes decoding through a decoding system, deinterleaving through a deinterleaver, and processing through a cyclical redundancy check circuit;

wherein said wireless terminal is a particular wireless terminal included within a set of wireless terminals in said wireless communication system;

wherein said quick page message is for directing said set of wireless terminals to monitor said second encoded channel for said full page message;

wherein said quick page message contains less data bits than said full page message;

wherein said full page message identifies said particular wireless terminal among said set of wireless terminals;

wherein said receiving said quick page message is during a first time slot assigned to the set of wireless terminals;

wherein said receiving said full page message is during a second time slot assigned to the set of wireless terminals;

wherein said second time slot is assigned to said first time slot by way of having a determined time delay between said first and second time slots;

wherein said second time slot occurs after said first time slot;

wherein said quick page message is comprised of a single bit of data, said single bit of data transmitted via said first encoded channel is modulated multiple times by the same code, effectively receiving the bit multiple times in said receiving said quick page message,

and wherein the set of wireless terminals assigned to said first paging slot changes over time to ensure that each wireless terminal is associated with a different set of other wireless terminals during each first paging slot

wherein different sets of wireless terminals are assigned to different first paging slots, and

wherein a group of said first paging slots are assigned to a single second paging slot, said group of said first paging slots forming a quick page period beginning a fixed time before the beginning of the second paging slot.

11. The method as set forth in claim 10, wherein said decoding system is a trellis decoding system.

12. An apparatus, comprising:

means for receiving a quick page message via a first encoded channel, said quick page message notifying the wireless terminal to begin monitoring a second encoded channel for a full page message, wherein said first encoded channel is less encoded than said second encoded channel;

means for receiving a full page message via said second encoded channel;

wherein said means for receiving said full page message includes more processing means than said means for receiving said quick page message, wherein said more processing means includes means for decoding through a decoding system, means for deinterleaving through a deinterleaver, and means for processing through a cyclical redundancy check circuit;

wherein said wireless terminal is a particular wireless terminal included within a set of wireless terminals in said wireless communication system;

wherein said quick page message is for directing said set of wireless terminals to monitor said highly encoded channel for said full page message;

wherein said quick page message contains less data bits than said full page message;

wherein said quick page message lacks any information for identifying any wireless terminal among said set of wireless terminals;

wherein said full page message identifies said particular wireless terminal among said set of wireless terminals;

wherein said receiving said quick page message is during a first time slot assigned to the set of wireless terminals;

wherein said receiving said full page message is during a second time slot assigned to the set of wireless terminals;

wherein said second time slot is assigned to said first time slot by way of having a determined time delay between said first and second time slots;

wherein said second time slot occurs after said first time slot;

wherein said quick page message is comprised of a single bit of data, wherein said single bit of data transmitted via said first encoded channel is modulated multiple times by the same code, effectively receiving the bit multiple times in said receiving said quick page message,

and wherein the set of wireless terminals assigned to said first paging slot changes over time to ensure that each wireless terminal is associated with a different set of other wireless terminals during each first paging slot

wherein different sets of wireless terminals are assigned to different first paging slots, and

wherein a group of said first paging slots are assigned to a single second paging slot, said group of said first paging slots forming a quick page period beginning a fixed time before the beginning of the second paging slot.

13. The method as set forth in claim 12, wherein said decoding system is a trellis decoding system.

14. An apparatus for paging a wireless terminal in a wireless telecommunications system comprising:

means for transmitting a quick page message via a first encoded channel, said quick page message notifying the wireless terminal to begin monitoring a second encoded channel for a full page message, wherein said first encoded channel is less encoded than said second encoded channel;

means for transmitting a full page message via said second encoded channel;

wherein said second encoded channel includes more processing than said first encoded channel, wherein said more processing includes encoding through an encoder, interleaving through an interleaver, and adding cyclic redundancy chcck through a cyclic redundancy check circuit to said full page message;

wherein said wireless terminal is a particular wireless terminal included within a set of wireless terminals in said wireless communication system;

wherein said quick page message is for directing said sct of wireless terminals to monitor said second encoded channel for said full page message;

wherein said quick page message contains less data bits than said full page message;

wherein said full page message identifies said particular wireless terminal among said set of wireless terminals;

wherein said transmitting said quick page message is during a first time slot assigned to the set of wireless terminals;

wherein said transmitting said full page message is during a second time slot assigned to the set of wireless terminals;

wherein said second time slot is assigned to said first time slot by way of having a determined time delay between said first and second time slots;

wherein said second time slot occurs after said first time slot;

wherein said quick page message is comprised of a single bit of data, wherein said single bit of data transmitted via said first encoded channel is modulated multiple times by the same code, effectively transmitting the bit multiple times in said transmitting said quick page message,

wherein the set of wireless terminals assigned to said first paging slot changes over time to ensure that each wireless terminal is associated with a different set of oilier wireless terminals during each first paging slot,

wherein different sets of wireless terminals are assigned to different first paging slots, and

wherein a group of said first paging slots are assigned to a single second paging slot, said group of said first paging slots forming a quick page period beginning a fixed time before the beginning of the second paging slot.

15. The apparatus as set forth in claim 14, wherein said second encoded channel is established via direct sequence modulation with a second channel code.

16. The apparatus as set forth in claim 14, further comprising:

means for generating a quick page message before transmitting said quick page message via said first encoded channel; and

means for generating a full page message before transmitting said full page message via said second encoded channel.

17. The apparatus as set forth in claim 14, further comprising:

means for direct sequence spreading said full page message; and

means for direct sequence spreading said quick page message.

18. The apparatus as set forth in claim 14, further comprising:

means for receiving said quick page message during said first time slot;

means for activating signal processing circuitry; and

means for receiving said full page message during said second time slot and using said activated signal processing circuitry to process said full message.

19. The apparatus as set forth in claim 18, wherein said signal processing circuitry is comprised of a trellis decoding system.

20. The apparatus as set forth in claim 18, wherein said signal processing circuitry is comprised of a deinterleaver.

21. The apparatus as set forth in claim 18, wherein said signal processing circuitry is comprised of a cyclical redundancy check circuit.

22. The apparatus as set forth in claim 18, wherein said encoder is a convolutional encoder.

23. An apparatus, comprising:

at least one processor configured to

transmitting a quick page message via a first encoded channel, said quick page message notifying the wireless terminal to begin monitoring a second encoded channel for a full page message, wherein said first encoded channel is less encoded than said second encoded channel, and

transmitting a quick page message via a less first encoded channel, said quick page message notifying the wireless terminal to begin monitoring a second encoded channel for a full page message, wherein said first encoded channel is less encoded than said second encoded channel, and

transmit a full page message via said second encoded channel; and

a memory coupled to the at least one processor,

wherein said second encoded channel includes more processing than said first encoded channel, wherein said more processing includes encoding through an encoder, interleaving through an interleaver, and adding cyclic redundancy check through a cyclic redundancy check circuit to said full page message;

wherein said wireless terminal is a particular wireless terminal included within a set of wireless terminals in said wireless communication system;

wherein said quick page message is for directing said set of wireless terminals to monitor said second encoded channel for said full page message;

wherein said quick page message contains less data bits than said full page message;

wherein said full page message identifies said particular wireless terminal among said set of wireless terminals;

wherein said transmitting said quick page message is during a first time slot assigned to the set of wireless terminals;

wherein said transmitting said full page message is during a second time slot assigned to the set of wireless terminals;

wherein said second time slot is assigned to said first time slot by way of having a determined time delay between said first and second time slots;

wherein said second time slot occurs after said first time slot;

wherein said quick page message is comprised of a single bit of data, wherein said single bit of data transmitted via said first encoded channel is modulated multiple times by the same code, effectively transmitting the bit multiple times in said transmitting said quick page message,

and wherein the set of wireless terminals assigned to said first paging slot changes over time to ensure that each wireless terminal is associated with a different set of other wireless terminals during each first paging slot,

wherein different sets of wireless terminals are assigned to different first paging slots, and

wherein a group of said first paging slots are assigned to a single second paging slot, said group of said first paging slots forming a quick page period beginning a fixed time before the beginning of the second paging slot.

24. The apparatus as set forth in claim 23, wherein said second encoded channel is established via direct sequence modulation with a second channel code.

25. The apparatus as set forth in claim 23, wherein the at least one processor is further configured to:

generate a quick page message before transmitting said quick page message via said first encoded channel; and

generate a full page message before transmitting said full page message via said second encoded channel.

26. The apparatus as set forth in claim 23, wherein the at least one processor is further configured to

direct sequence spread said full page message, and

direct sequence spread said quick page message.

27. The apparatus as set forth in claim 23, wherein the at least one processor is further configured to

receive said quick page message during said first time slot,

activate signal processing circuitry, and

receive said full page message during said second time slot and use said activated signal processing circuitry to process said full message.

28. The apparatus as set forth in claim 27, wherein said signal processing circuitry is comprised of a trellis decoding system.

29. The apparatus as set forth in claim 27, wherein said signal processing circuitry is comprised of a deinterleaver.

30. The apparatus as set forth in claim 27, wherein said signal processing circuitry is comprised of a cyclical redundancy check circuit.

31. The apparatus as set forth in claim 23, wherein said encoder is a convolutional encoder.

32. An apparatus, comprising:

at least one processor configured to

receive a quick page message via a less first encoded channel, said quick page message notifying the wireless terminal to begin monitoring a highly second encoded channel for a full page message, wherein said first encoded channel is less encoded than said second encoded channel, and

receive a full page message via said second encoded channel; and

a memory coupled to the at least one processor,

wherein said receiving said full page message includes more processing than said receiving said quick page message, wherein said more processing includes decoding through a decoding system, deinterleaving through a deinterleaver, and processing through a cyclical redundancy check circuit;

wherein said wireless terminal is a particular wireless terminal included within a set of wireless terminals in said wireless communication system;

wherein said quick page message is for directing said set of wireless terminals to monitor said second encoded channel for said full page message;

wherein said quick page message contains less data bits than said full page message;

wherein said full page message identifies said particular wireless terminal among said set of wireless terminals;

wherein said receiving said quick page message is during a first time slot assigned to the set of wireless terminals;

wherein said receiving said full page message is during a second time slot assigned to the set of wireless terminals;

wherein said second time slot is assigned to said first time slot by way of having a determined time delay between said first and second time slots;

wherein said second time slot occurs after said first time slot;

wherein said quick page message is comprised of a single bit of data, said single bit of data transmitted via said first encoded channel is modulated multiple times by the same Walsh code, effectively receiving the bit multiple times in said receiving said quick page message,

and wherein the set of wireless terminals assigned to said first paging slot changes over time to ensure that each wireless terminal is associated with a different set of other wireless terminals during each first paging slot,

wherein different sets of wireless terminals are assigned to different first paging slots, and

wherein a group of said first paging slots are assigned to a single second paging slot, said group of said first paging slots forming a quick page period beginning a fixed time before the beginning of the second paging slot.

33. The apparatus as set forth in claim 32, wherein said decoding system is a trellis decoding system.