SYSTEM AND METHOD FOR RANDOM ACCESS WIRELESS COMMUNICATION

• US 20140133475A1
• Filed: 11/13/2013
• Published: 05/15/2014
• Est. Priority Date: 11/14/2012
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: HONG, Tae Chul, KIM, Hee Wook
• Granted Patent: US 9,338,790 B2
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A system and method for wireless communication that schedules a connection time of a terminal based on a delay time is provided. A base station of the system for wireless communication may include a delay time determiner to determine a delay time of a terminal, based on preamble information for a plurality of terminal groups based on location information of the terminal, and a scheduler to schedule a connection time for the terminal to connect to the base station, using the delay time.

Claims

1. A base station comprising:

a delay time determiner to determine a delay time of a terminal, using preamble information for a plurality of terminal groups based on information associated with a terminal location; and

a scheduler to schedule a connection time for the terminal to connect to a base station, using the delay time.

2. The base station of claim 1, wherein a terminal of the plurality of terminal groups is grouped based on a delay time related to a distance between the base station and the terminal.

3. The base station of claim 1, wherein the scheduler sets differing durations of time occupied by communication resources corresponding to the terminal, based on a terminal group including the terminal, and schedule a connection time for the terminal.

4. The base station of claim 1, wherein the scheduler sets, in proportion to the delay time, a duration of time occupied by communication resources corresponding to a terminal.

5. The base station of claim 1, wherein the scheduler allocates identical communication resources to a plurality of terminals for which respective delay times differ from one another.

6. A terminal comprising:

a preamble information selector to select preamble information, using information associated with a terminal location; and

a transceiver to transmit the preamble information to a base station, and receive scheduling information corresponding to the preamble information from the base station.

7. The terminal of claim 6, wherein the preamble information selector determines a terminal group corresponding to a terminal, using the information on the terminal location, and selects preamble information corresponding to the terminal group.

8. The terminal of claim 7, wherein the preamble information selector identifies a delay time occurring during communication between a terminal and a base station, using a distance between the terminal and the base station based on the information associated with the terminal location, and identifies a terminal group corresponding to a terminal based on the delay time.

9. The terminal of claim 7, wherein terminals of the terminal group are grouped based on a delay time related to a distance between the base station and the terminal.

10. The terminal of claim 6, wherein the transceiver performs wireless communication through connecting to the base station, based on the scheduling information.

11. A method for wireless communication, the method comprising:

determining a delay time of a terminal, using preamble information for a plurality of terminal groups based on information associated with a terminal location; and

scheduling a connection time for the terminal to connect to a base station, using the delay time.

12. The method of claim 11, wherein terminals of the plurality of terminal groups are grouped based on a delay time related to a distance between the base station and the terminal.

13. The method of claim 11, wherein the scheduling comprises:

setting differing durations of time occupied by communication resources corresponding to the terminal based on a terminal group including the terminal, and scheduling a connection time of the terminal.

14. The method of claim 11, wherein the scheduling comprises:

setting, in proportion to the delay time, a duration of time occupied by communication resources corresponding to a terminal.

15. The method of claim 11, wherein the scheduling comprises:

allocating identical communication resources to a plurality of terminals for which respective delay times differ from one another.

16. A method for wireless communication, the method comprising:

selecting preamble information, using information on a terminal location; and

transmitting the preamble information, and receiving scheduling information corresponding to the preamble information from the base station.

17. The method of claim 16, wherein the selecting of the preamble information comprises:

determining a terminal group corresponding to a terminal, using information on a terminal location, and selecting preamble information corresponding to the terminal group.

18. The method of claim 17, wherein the selecting of the preamble information comprises:

identifying a delay time occurring during communication between a terminal and a base station, using a distance between the terminal and the base station based on the information associated with the terminal location, and identifying a terminal group corresponding to a terminal based on the delay time.

19. The method of claim 17, wherein terminals of the terminal group are grouped based on a delay time related to a distance between the base station and the terminal.

20. The method of claim 16, further comprising:

performing wireless communication through connecting to the base station, based on the scheduling information.