SYSTEM AND METHOD FOR TRANSMITTING DATA IN A MULTI-CELL NETWORK

• US 20110110285A1
• Filed: 06/18/2010
• Published: 05/12/2011
• Est. Priority Date: 11/06/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jung, Young-Ho, Choi, Hyun Ho, Ahn, Hyun Gi, Hwang, Hyo Sun, Lim, Jong Bu
• Granted Patent: US 9,112,650 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 27/2655 Synchronisation arrangements
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0069 Allocation based on distance or geographical location allocation based on terminal or device properties in general, H04W72/51

Abstract

A communication system and method that receives data from a terminal using a cooperative reception scheme, is provided. Each terminal may generate multi-cell transmission data used for overcoming transmission delay and transmit, to each base station, a data frame including the multi-cell transmission data.

Claims

1. A terminal, comprising:

a transmission data generating unit configured to generate multi-cell transmission data by repeating a data group comprising a plurality of data bits; and

a transmission unit configured to transmit the multi-cell transmission data comprising the repeated data group to a plurality of base stations.

2. The terminal of claim 1, further comprising:

a cyclic prefix unit configured to generate a cyclic prefix signal using at least one bit of the plurality of data bits; and

a frame generation unit configured to generate an uplink frame by time-division multiplexing the cyclic prefix signal and the multi-cell transmission data.

3. The terminal of claim 1, further comprising:

a receiving unit configured to receive downlink data from a serving base station and a cooperative base station, from among the plurality of base stations; and

an error determination unit configured to determine whether an error of the downlink data occurs,

wherein the plurality of data bits comprises information about whether an error of the downlink data occurs.

4. The terminal of claim 1, further comprising:

a modulation unit configured to modulate uplink data in an orthogonal frequency division multiplexing (OFDM) scheme; and

a data bit selecting unit configured to select the plurality of data bits from the uplink data based on an order of carrier frequencies of the uplink data.

5. The terminal of claim 4, wherein the data bit selecting unit is further configured to select uplink data having an odd-numbered carrier frequency, as the plurality of data bits, or select uplink data having an even-numbered carrier frequency, as the plurality of data bits.

6. The terminal of claim 4, further comprising:

a receiving unit configured to receive, from a serving base station included in the plurality of base stations, a maximum transmission delay value,

wherein the data bit selecting unit is further configured to select the plurality of data bits in accordance with the maximum transmission delay value.

7. A base station, comprising:

a receiving unit configured to receive, from a plurality of terminals, multi-cell transmission data generated by repeating a data group comprising a plurality of data bits;

a window setting unit configured to set a total window duration with respect to receiving the multi-cell transmission data based on transmission delay values from each of the plurality of terminals; and

a restoration unit configured to restore the data group using the multi-cell transmission data corresponding to the total window duration.

8. The base station of claim 7, wherein the window setting is further unit is further configured to:

determine, as a starting time of a first window duration, a maximum value from the transmission delay values;

determine, as an end time of the first window duration, an end point in time of the multi-cell transmission data;

set, as a second window duration, data bits not included in the first window duration from among the repeated data groups; and

set, as the total window duration, the first window duration and the second window duration.

9. The base station of claim 7, further comprising:

a transmission unit configured to transmit downlink data to the plurality of terminals; and

a receiving unit configured to receive the plurality of data bits comprising information about whether an error of the downlink data occurs.

10. A data transmission method, comprising:

generating multi-cell transmission data by repeating a data group comprising a plurality of data bits; and

transmitting the multi-cell transmission data comprising the repeated data group to a plurality of base stations.

11. The data transmission method of claim 10, further comprising:

generating a cyclic prefix signal using at least one bit of the plurality of data bits; and

generating an uplink frame by time-division multiplexing the cyclic prefix signal and the multi-cell transmission data,

wherein the transmitting further comprises transmitting the uplink frame.

12. The data transmission method of claim 10, further comprising:

receiving downlink data from a serving base station and a cooperative base station, from among the plurality of base stations; and

verifying whether an error of the downlink data occurs,

wherein the plurality of data bits comprises information about whether an error of the downlink data occurs.

13. The data transmission method of claim 10, further comprising:

modulating uplink data in an OFDM scheme; and

selecting the plurality of data bits from the uplink data based on a carrier frequency of the uplink data.

14. The data transmission method of claim 13, wherein the selecting selects uplink data having an odd-numbered carrier frequency, as the plurality of data bits, or selects uplink data having an even-numbered carrier frequency, as the plurality of data bits.

15. The data transmission method of claim 13, further comprising:

receiving a maximum transmission delay value from a serving base station included in the plurality of base stations,

wherein the selecting selects the plurality of data bits in accordance with the maximum transmission delay value.

16. A non-transitory computer-readable storage medium having stored therein program instructions to cause a processor to implement a data transmission method, comprising:

generating multi-cell transmission data by repeating a data group comprising a plurality of data bits; and

transmitting the multi-cell transmission data comprising the repeated data group to a plurality of base stations.