Detection in a communication system using a preamble sequence

• US 10,187,170 B2
• Filed: 10/20/2017
• Issued: 01/22/2019
• Est. Priority Date: 06/09/2006
• Status: Active Grant

• Current Assignee: EQUO IP LLC
• Original Assignee: Evolved Wireless LLC
• Inventors: Kwon, Yeong Hyeon, Han, Seung Hee, Park, Hyun Hwa, Kim, Dong Cheol, Lee, Hyun Woo, Noh, Min Seok
• Primary Examiner(s): Beharry, Noel R
• Assistant Examiner(s): Mak, Rodrick
• Application Number:
  US15/789,407
• Publication Number:
  US 20180041299A1
• Time in Patent Office: 459 Days
• Field of Search: None
• 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 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 information and timing information; and

transmitting, by the user equipment, using the position information, and on a random access channel, a preamble sequence to the base station to access a cellular network, wherein the preamble sequence has the form of a single cyclic prefix (CP) concatenated to a front-end of an N-time repetition, where N is an integer greater than 1, of the product of a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) based sequence with an exponential sequence.

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

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