[특허]Quick paging channel with reduced probability of missed page

QUALCOMM Incorporated

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()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Quick paging channel with reduced probability of missed page

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04W-068/00 H04W-068/02
출원번호	US-0454474 (2006-06-15)
등록번호	US-9055552 (2015-06-09)
발명자 / 주소	Prakash, Rajat Ulupinar, Fatih
출원인 / 주소	QUALCOMM Incorporated
대리인 / 주소	Simon, Darren M.
인용정보	피인용 횟수 : 0 인용 특허 : 170

초록
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Systems and methods of generating quick paging messages having nearly unique identifiers and variable capacity are described. The system generates a quick paging message identifying an access terminal to indicate the presence of a scheduled paging message for that access terminal. The system generates a quick paging notification for each access terminal having a scheduled paging message and generates a compressed nearly unique identifier of each access terminal that is notified in the quick paging message. The compression technique can vary based on the ...

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1. A method of generating a quick page message in a wireless communication system, the method comprising: in an access point, generating a compressed identifier value for at least one access terminal to be notified in the quick page message, wherein the compressed identifier value is based on a number of access terminals scheduled to receive at least one paging message and represents a full length identifier that identifies the access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the compressed identifier value;assembling the quick paging message including the compressed identifier based at least in part on a number of access terminals scheduled to receive at least one paging message; andgenerating a wireless signal including at least a portion of the quick page message. 2. The method of claim 1, wherein generating the wireless signal comprises generating an Orthogonal Frequency Division Multiplex (OFDM) symbol including at least the portion of the quick page message. 3. The method of claim 2, further comprising wireless transmitting the OFDM symbol during a superframe preamble. 4. The method of claim 1, further comprising: determining the number of access terminals scheduled to receive the at least one paging message;determining whether the number exceeds a predetermined maximum number; andpopulating a page number field in the quick page message based on whether the number exceeds the predetermined maximum number. 5. The method of claim 4, wherein populating the page number field comprises populating the page number field with the number if the number does not exceed the predetermined maximum number. 6. The method of claim 4, wherein populating the page number field comprises populating the page number field with the predetermined maximum number if the number exceeds the predetermined maximum number. 7. The method of claim 4, further comprising setting an indicator field in the quick page message based on whether the number exceeds the predetermined maximum number. 8. The method of claim 1, wherein generating the compressed identifier value comprises: determining the number of access terminals scheduled to receive the at least one paging message; andgenerating the compressed identifier value for at least one of the access terminals based at least in part on the number. 9. The method of claim 8, wherein generating the compressed identifier value based at least in part on the number comprises generating a hash value of an access terminal identifier based on the number. 10. The method of claim 8, wherein generating the compressed identifier value based at least in part on the number comprises: determining a compressed identifier bit length based on the number; andcompressing an access terminal identifier to the compressed identifier value having the compressed identifier bit length. 11. The method of claim 1, wherein generating the compressed identifier value comprises generating the compressed identifier value based on an access terminal identifier of the at least one access terminal. 12. The method of claim 1, wherein assembling the quick paging message comprises concatenating a plurality of compressed identifier values. 13. The method of claim 1, wherein assembling the quick paging message comprises: sorting the compressed identifier values, each compressed identifier value corresponding to a distinct access terminal according to a predetermined algorithm; andconcatenating the compressed identifier values in an order based on the sort. 14. The method of claim 1, further comprising wireless transmitting the wireless signal during a superframe preamble. 15. The method of claim 1, wherein generating the wireless signal comprises Quadrature Phase Shift Key (QPSK) modulating a plurality of Orthogonal Frequency Division Multiplex (OFDM) subcarriers with distinct portions of the quick page message. 16. A method of generating a quick page message in a wireless communication system, the method comprising: in an access point, determining the identity of access terminals scheduled to receive at least one paging message;determining the number of access terminals scheduled to receive at least one paging message;determining a compressed identifier value for each of at least a portion of the access terminals scheduled to receive at least one paging message, wherein each compressed identifier value is based on a number of access terminals scheduled to receive at least one paging message and represents a full length identifier that identifies an access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the corresponding compressed identifier value; andassembling the quick page message based at least in part on the number of access terminals scheduled to receive at least one paging message and the compressed identifier value. 17. The method of claim 16, further comprising zero padding a reserved field of the quick page message to a predetermined length. 18. The method of claim 16, further comprising setting a field in the quick page message based in part on the number of access terminals scheduled to receive at least one paging message. 19. The method of claim 16, further comprising generating an Orthogonal Frequency Division Multiplex (OFDM) symbol having at least a portion of the quick paging message. 20. The method of claim 19, further comprising transmitting the OFDM symbol in a predetermined time slot of a superframe of the wireless communication system. 21. The method of claim 16, wherein determining the compressed identifier value comprises generating the compressed identifier based at least in part on the number of access terminals scheduled to receive at least one paging message. 22. The method of claim 16, wherein determining the compressed identifier value comprises generating a hash value based at least in part on an access terminal identifier value. 23. The method of claim 16, wherein assembling the quick page message comprises: concatenating the compressed identifier values in an identifier field;setting count field based on the number of access terminals scheduled to receive at least one paging message; andsetting an additional page field based on the number of access terminals scheduled to receive at least one paging message. 24. A method of processing a quick page message in a wireless communication system, the method comprising: at an access terminal, receiving a wireless signal having the quick page message;recovering the quick page message from the wireless signal, wherein the quick page message is based at least in part on a number of access terminals scheduled to receive at least one paging message;determining a number of compressed identifier values in the quick page message, wherein each compressed identifier value is based on the number of access terminals scheduled to receive the at least one paging message and represents a full length identifier that identifies an access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the corresponding compressed identifier value; andcomparing each compressed identifier value from the quick page message with a predetermined compressed identifier value. 25. The method of claim 24, further comprising determining a state of an additional page field in the quick page message. 26. The method of claim 24, wherein receiving the wireless signal having the quick page message comprises receiving an Orthogonal Frequency Division Multiplex (OFDM) symbol having at least a portion of the quick page message. 27. The method of claim 24, wherein recovering the quick page message comprises demodulating at least a subset of the subcarriers of an Orthogonal Frequency Division Multiplex (OFDM) symbol. 28. The method of claim 24, wherein determining the number of compressed identifier values comprises reading a count field in the quick page message indicative of the number of compressed identifier values. 29. The method of claim 24, wherein comparing each compressed identifier value comprises: determining the predetermined compressed identifier value based on the number of compressed identifier values in the quick page message; andcomparing each compressed identifier value with the predetermined compressed identifier value. 30. The method of claim 29, wherein determining the predetermined compressed identifier value comprises generating the predetermined compressed identifier based on a compression algorithm and the number of compressed identifier values in the quick page message. 31. The method of claim 29, wherein determining the predetermined compressed identifier value comprises retrieving the predetermined compressed identifier from a storage device based in part on the number of compressed identifier values in the quick page message. 32. An apparatus for generating a quick page message, the apparatus comprising: a paging message counter configured to determine a number of unique access terminals scheduled to receive a paging message;a compressed identifier generator coupled to the paging message counter and configured to generate a compressed identifier, wherein each compressed identifier value is based on the number of unique access terminals scheduled to receive the paging message and represents a full length identifier that identifies an access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the corresponding compressed identifier value; anda message assembler coupled to the compressed identifier generator and configured to set a count field in the quick page message based on the number of unique access terminals, and further configured to concatenate the compressed identifiers corresponding to each of the subset of unique access terminals;wherein the message assembler is further configured to set an additional identifier field in the quick page message based in part on the number of unique access terminals scheduled to receive at least one paging message. 33. The apparatus of claim 32, wherein the compressed identifier generator generates the compressed identifier for no greater than a predetermined maximum number of unique access terminals. 34. The apparatus of claim 32, wherein the compressed identifier generator generates the compressed identifier based at least in part on the number of unique access terminals. 35. The apparatus of claim 32, wherein the compressed identifier generator generates the compressed identifier based at least in part on an access terminal identifier. 36. The apparatus of claim 32, wherein the compressed identifier generator generates the compressed identifier based on a variable compression ratio that depends, in part, on the number of unique access terminals. 37. The apparatus of claim 32, wherein the compressed identifier generator generates a reserved value if the number of unique access terminals is zero. 38. An apparatus for processing a quick page message, the apparatus comprising: a receiver configured to receive a wireless signal having the quick page message that is based at least in part on a number of access terminals scheduled to receive at least one paging message;a receive processor coupled to the receiver and configured to extract the quick page message from the wireless signal;a compressed value module configured to generate a predetermined compressed identifier; anda comparator configured to extract at least one compressed identifier from the quick page message and compare it to the predetermined compressed identifier to determine whether the apparatus is notified of a scheduled paging message, wherein the compressed identifier value is based on the number of access terminals scheduled to receive the at least one paging message and represents a full length identifier that identifies the access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the compressed identifier value. 39. The apparatus of claim 38, wherein the receive processor is configured to demodulate at least a subset of subcarriers of an Orthogonal Frequency Division Multiplex (OFDM) symbol to recover the quick page message. 40. The apparatus of claim 38, wherein the compressed value module is configured to generate the predetermined compressed identifier based in part on a number of compressed identifiers contained in the quick page message. 41. The apparatus of claim 38, wherein the compressed value module is configured to retrieve the predetermined compressed identifier from a plurality of predetermined identifiers stored in a storage device based in part on a number of compressed identifiers contained in the quick page message. 42. An apparatus for generating a quick page message, the apparatus comprising: means for generating a compressed identifier value for at least one access terminal to be notified in the quick page message, wherein the compressed identifier value is based on a number of access terminals scheduled to receive at least one paging message and represents a full length identifier that identifies the access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the compressed identifier value;means for assembling the quick paging message including the compressed identifier based at least in part on the number of access terminals scheduled to receive the at least one paging message; andmeans for transmitting a wireless signal including at least a portion of the quick page message. 43. An apparatus for processing a quick page message, the apparatus comprising: means for receiving a wireless signal having the quick page message that is based at least in part on a number of access terminals scheduled to receive at least one paging message;means for recovering the quick page message from the wireless signal;means for determining a number of compressed identifier values in the quick page message, wherein each compressed identifier value is based on the number of access terminals scheduled to receive the at least one paging message and represents a full length identifier that identifies an access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the compressed identifier value; andmeans for comparing each compressed identifier value from the quick page message with a predetermined compressed identifier value. 44. A non-transitory processor readable media including instructions that may be utilized by one or more processors, the instructions comprising: instructions for generating a compressed identifier value for at least one access terminal notified in the quick page message, wherein the compressed identifier value is based on a number of access terminals scheduled to receive at least one paging message and represents a full length identifier that identifies the access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the compressed identifier value;instructions for assembling the quick paging message including the compressed identifier based at least in part on the number of access terminals scheduled to receive the at least one paging message; andinstructions for generating a signal including at least a portion of the quick page message, and coupling the signal to a wireless transmitter. 45. A non-transitory processor readable media including instructions that may be utilized by one or more processors, the instructions comprising: instructions for receiving a signal having the quick page message based at least in part on a number of access terminals scheduled to receive at least one paging message;instructions for recovering the quick page message from the signal;instructions for determining a number of compressed identifier values in the quick page message, wherein each compressed identifier value is based on the number of access terminals scheduled to receive the at least one paging message and represents a full length identifier that identifies an access terminal, wherein a rate of compression of the compressed identifier value varies based on the number of access terminals scheduled to receive the at least one paging message, and wherein the full length identifier can be determined based on the compressed identifier value; andinstructions for comparing each compressed identifier value from the quick page message with a predetermined compressed identifier value. 46. The method of claim 1, wherein the full length identifier includes a number of bits ranging from 48 to 128. 47. The method of claim 16, wherein the full length identifier includes a number of bits ranging from 48 to 128. 48. The method of claim 24, wherein the full length identifier includes a number of bits ranging from 48 to 128. 49. The apparatus of claim 32, wherein the full length identifier includes a number of bits ranging from 48 to 128. 50. The apparatus of claim 38, wherein the full length identifier includes a number of bits ranging from 48 to 128. 51. The method of claim 1, wherein the rate of compression is directly proportional to the number of access terminals scheduled to receive the at least one paging message. 52. The method of claim 4, wherein populating the page number field further comprises concatenating a plurality of compressed identifier values in order of increasing value if the number of access terminals scheduled to receive the at least one paging message exceeds the predetermined maximum number.

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