Method of transmitting data in a mobile communication system

• US 9,560,650 B2
• Filed: 12/31/2015
• Issued: 01/31/2017
• 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): KHAJURIA, SHRIPAL K
• Application Number:
  US14/986,327
• Publication Number:
  US 20160113012A1
• Time in Patent Office: 397 Days
• Field of Search: 709/228
• US Class Current: 1/1
• 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:

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 method of claim 1, wherein the preamble sequence causes a reduction in access time.

3. The method of claim 1, wherein the random access channel allows the user equipment to access a network in a state where the user equipment is not uplink synchronized with the base station.

4. The method of claim 1, further comprising transmitting, by the user equipment, the preamble for a predetermined time period through a frequency band.

5. The method of claim 1, further comprising transmitting, by the user equipment, a pilot including channel quality information.

6. The method of claim 1, wherein a preamble, synchronization timing information, pilot information, uplink resource allocation information and messages are also transmitted by the user equipment on the random access channel.

7. The method of claim 6, wherein the preamble and the messages are separately transmitted through the random access channel.

8. The method of claim 1, wherein the preamble is a repetitive pattern.

9. A system that transmits a preamble sequence to a base station to at least improve detection performance, the system comprising:

user equipment adapted to;

generate a specific sequence, having a length (L), from a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) sequence;

apply a circular shift to the specific sequence by multiplying the specific sequence by an exponential sequence;

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

generate the preamble sequence by concatenating a single cyclic prefix (CP) to a front end of the consecutive sequence; and

a transmitter in the user equipment adapted to transmit, on a random access channel, the preamble sequence to the base station to access a cellular network.

10. The system of claim 9, wherein the preamble sequence causes a reduction in access time.

11. The system of claim 9, wherein the random access channel allows the user equipment to access a network in a state where the user equipment is not uplink synchronized with the base station.

12. The system of claim 9, wherein the user equipment is further adapted to transmit the preamble for a predetermined time period through a frequency band.

13. The system of claim 9, wherein the user equipment is further adapted to transmit a pilot including channel quality information.

14. The system of claim 9, wherein a preamble, synchronization timing information, pilot information, uplink resource allocation information and messages are also transmitted by the user equipment on the random access channel.

15. The system of claim 14, wherein the user equipment is adapted to transmit the preamble and the messages separately through the random access channel.

16. The system of claim 9, wherein the preamble is a repetitive pattern.

17. 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:

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.

18. The media of claim 17, wherein the preamble sequence causes a reduction in access time.

19. The media of claim 17, wherein the random access channel allows the user equipment to access a network in a state where the user equipment is not uplink synchronized with the base station.

20. The media of claim 17, wherein the method further comprises transmitting, by the user equipment, the preamble for a predetermined time period through a frequency band.

21. The media of claim 17, wherein the method further comprises transmitting, by the user equipment, a pilot including channel quality information.

22. The media of claim 17, wherein a preamble, synchronization timing information, pilot information, uplink resource allocation information and messages are also transmitted by the user equipment on the random access channel.

23. The media of claim 22, wherein the method further comprises separately transmitting, by the user equipment, the preamble and the messages through the random access channel.

24. The media of claim 17, wherein the preamble is a repetitive pattern.