METHOD OF TRANSMITTING DATA IN A MOBILE COMMUNICATION SYSTEM

• US 20100296436A1
• Filed: 06/08/2007
• Published: 11/25/2010
• Est. Priority Date: 06/09/2006
• Status: Active Grant

• Current Assignee: EQUO IP LLC
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Dong Cheol, Noh, Min Seok, Han, Seung Hee, Park, Hyun Hwa, Kwon, Yeong Hyeon, Lee, Hyun Woo
• Granted Patent: US 8,218,481 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04J 13/0059 CAZAC [constant-amplitude and zero auto-correlation]
• CPC Class Codes: H04J 13/0062 Zadoff-Chu
• CPC Class Codes: H04J 13/10 Code generation
• CPC Class Codes: H04J 13/107 by concatenation
• CPC Class Codes: H04J 13/22 Allocation of codes with a zero correlation zone
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 27/2605 Symbol extensions, e.g. Zero Tail, Unique Word [UW]
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 27/2655 Synchronisation arrangements
• CPC Class Codes: H04L 5/0016 Time-frequency-code
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 74/0833 : Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/18 : Management of setup rejection or failure

Abstract

Disclosed is a data transmission method in a mobile communication system. The data transmission method through a code sequence in a mobile communication system includes grouping input data streams into a plurality of blocks consisting of at least one bit so as to map each block to a corresponding signature sequence, multiplying a signature sequence stream, to which the plurality of blocks are mapped, by a specific code sequence, and transmitting the signature sequence stream multiplied by the specific code sequence to a receiver.

Claims

1-30. -30. (canceled)

31. A method of transmitting a preamble sequence in a mobile communication system, the method comprising:

generating said preamble sequence by repeating a specific sequence at least one time and concatenating a cyclic prefix (CP) to a front end of said repeated sequence, said CP being identical to a part of a rear end of said specific sequence; and

transmitting said preamble sequence to a receiving side on a random access channel.

32. The method of claim 31, further comprising generating said specific sequence from a CAZAC (Constant Amplitude Zero Auto Correlation) sequence.

33. The method of claim 32, further comprising applying a cyclic shift to said specific sequence generated from said CAZAC.

34. The method of claim 33, wherein a value of said applied cyclic shift is determined as an integer value of a predetermined circular shift unit.

35. The method of claim 33, wherein a value of said applied cyclic shift is used as additional information.

36. The method of claim 33, wherein applying said cyclic shift comprises multiplying said specific sequence by an exponential sequence.

37. The method of claim 31, further comprising generating said specific sequence by combining at least two code sequences mapped with at least one information bit, respectively.

38. A transmitter for transmitting a preamble sequence in a mobile communication system, the transmitter comprising:

means for generating said preamble sequence by repeating a specific sequence at least one time and concatenating a cyclic prefix (CP) to a front end of said repeated sequence, said cyclic prefix being identical to a rear end of said specific sequence; and

means for transmitting said preamble sequence to a receiving side on a random access channel.

39. The transmitter of claim 38, wherein said means for generating said preamble are configured to generate said specific sequence from a CAZAC (Constant Amplitude Zero Auto Correlation) sequence.

40. The transmitter of claim 39, wherein said means for generating said preamble are configured to apply a cyclic shift to said specific sequence generated from said CAZAC.

41. The transmitter of claim 40, wherein a value of said applied cyclic shift is determined as an integer value of a predetermined circular shift unit.

42. The transmitter of claim 39, wherein a value of said applied cyclic shift is used as additional information.

43. The transmitter of claim 39, wherein said means for generating said preamble are configured to apply a cyclic shift by multiplying said specific sequence by an exponential sequence.

44. The transmitter of claim 38, wherein said means for generating said preamble are configured to generate said specific sequence by combining at least two code sequences mapped with at least one information bit, respectively.