Method of transmitting data in a mobile communication system

• US 9,705,624 B2
• Filed: 01/12/2017
• Issued: 07/11/2017
• Est. Priority Date: 06/09/2006
• Status: Active Grant

• Current Assignee: EQUO IP LLC
• Original Assignee: Evolved Wireless LLC
• Inventors: Noh, Min Seok, Park, Hyun Hwa, Kwon, Yeong Hyeon, Han, Seung Hee, Kim, Dong Cheol, Lee, Hyun Woo
• Primary Examiner(s): KHAJURIA, SHRIPAL K
• Application Number:
  US15/404,542
• Publication Number:
  US 20170126349A1
• Time in Patent Office: 180 Days
• Field of Search: 709228
• 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. A non-transitory computer readable information storage media including instructions, that when executed by one or more processors, cause to be performed a method for transmitting a preamble sequence from user equipment to a base station to at least improve detection performance, the method comprising:

receiving, from the base station, position information of an allocated random access channel resource, the position information including frequency and timing information;

generating, by the user equipment, a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence;

applying, by the user equipment, a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence;

repeating, by the user equipment, the circular-shifted specific sequence to generate a consecutive sequence having a length (N*L), wherein N is an integer greater than 1;

generating, by the user equipment, the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and

transmitting, by the user equipment, on a random access channel the preamble sequence to the base station to access a cellular network.

2. The media of claim 1, wherein the position information is expressed by one or more of subcarrier offset, number of sub-carriers, timing offset, and a number of symbols.

3. The media of claim 1, wherein the receiving step comprises receiving the position information over a broadcast channel.

4. The media of claim 1, where in the receiving step comprises receiving the position information over a downlink control channel.

5. A non-transitory computer readable information storage media including instructions, that when executed by one or more processors, cause to be performed a method for transmitting a preamble sequence from user equipment to a base station to at least improve detection performance, the method comprising:

receiving from the base station position information of an allocated random access channel resource, the position information including frequency and timing information;

generating, by the user equipment, a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence;

applying, by the user equipment, a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence;

repeating, by the user equipment, the circular-shifted specific sequence to generate a consecutive sequence having a length (N*L), wherein N is an integer greater than 1;

generating, by the user equipment, the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and

attempting, by the user equipment, access over the random access channel resource in a current frame, and, when the attempt is successful, transmitting, by the user equipment the preamble sequence to the base station to access a cellular network.

6. The media of claim 5, wherein when the attempt is not successful, attempting, by the user equipment, access over the random access channel resource in a subsequent frame.