DATA TRANSMISSION METHOD FOR MACHINE TYPE COMMUNICATION (MTC) AND MTC APPARATUS

• US 20130294399A1
• Filed: 04/24/2013
• Published: 11/07/2013
• Est. Priority Date: 04/24/2012
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute, LG Electronics, Inc. (LG Corporation), MTH, Inc.
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: LEE, Jun Hwan
• Granted Patent: US 9,408,014 B2
• Time in Patent Office: Days
• US Class Current: 370/330
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Abstract

A data transmission method for Machine Type Communication (MTC) and a MTC apparatus are disclosed. The data transmission method for MTC includes: dividing each of a plurality of subframes configured with time resources and frequency resources into a first region for transmitting control information and a second region for transmitting data; and allocating resources for MTC to the second region of each subframe according to a predetermined hopping period and a predetermined hopping frequency interval. Accordingly, it is possible to increase the data transfer rate of a MTC apparatus.

Claims

1. A data transmission method for Machine Type Communication (MTC), which is performed by a communication apparatus supporting MTC, comprising:

dividing each of a plurality of subframes configured with time resources and frequency resources into a first region for transmitting control information and a second region for transmitting data; and

allocating resources for MTC to the second region of each subframe according to a predetermined hopping period and a predetermined hopping frequency interval.

2. The data transmission method of claim 1, wherein the resources for MTC are configured with a frequency band that is narrower than the frequency band of each subframe and include a plurality of resource blocks, and the predetermined hopping frequency interval is decided as a frequency interval corresponding to a minimum number of resource blocks included in the frequency band for MTC.

3. The data transmission method of claim 1, wherein the center frequency of a resource for MTC allocated to the second region of a predetermined subframe among the plurality of subframes is decided by a predetermined hopping frequency interval and a predetermined hopping index.

4. The data transmission method of claim 3, wherein the hopping index is an integer equal to or greater than 0, and the maximum value of the hopping index is decided by the number of resource blocks included in the plurality of subframes and the number of resource blocks allocated for MTC.

5. The data transmission method of claim 3, wherein the hopping index is shared by a transmitting apparatus and a receiving apparatus that perform MTC.

6. The data transmission method of claim 3, wherein the predetermined hopping period is decided based on at least one value of the index of the subframe and the maximum value of the hopping index.

7. The data transmission method of claim 1, wherein the predetermined hopping period is decided as an integer multiple of the subframe.

8. The data transmission method of claim 1, wherein the allocating of the resources for MTC comprises allocating the resources for MTC to a time region corresponding to the second region of each subframe, in consideration of a time difference between a frequency conversion delay time of a receiving apparatus for receiving MTC data and the time duration of the corresponding first region.

9. The data transmission method of claim 8, wherein the allocating of the resources for MTC comprises allocating the resources for MTC to the same time duration as the second region if the frequency conversion delay time is equal to or shorter than the time duration of the first region.

10. The data transmission method of claim 8, wherein the allocating of the resources for MTC comprises allocating the resources for MTC from a time point elapsed by the time difference between the frequency conversion delay time and the time duration of the first region from a time point at which the second region of the subframe starts, if the frequency conversion delay time is longer than the time duration of the first region and the hopping period corresponds to the length of a subframe.

11. The data transmission method of claim 10, wherein the allocating of the resource for MTC comprises first allocating resources for data transmission among the resources for MTC in a time domain.

12. The data transmission method of claim 8, wherein the allocating of the resource for MTC comprises allocating the resources for MTC from a time point at which the second region of the subframe starts to a time point corresponding to the time difference between the frequency conversion delay time and the time duration of the first region, if the frequency conversion delay time is longer than the time duration of the first region and the hopping period corresponds to the length of a subframe.

13. The data transmission method of claim 12, wherein the allocating of the resource for MTC comprises first allocating resources for control information transmission among the resources for MTC in a time domain.

14. The data transmission method of claim 12, wherein in the allocating of the resource for MTC, the receiving apparatus for receiving the MTC data starts frequency conversion from a time point at which a region of the resources for MTC allocated to the second region of the subframe terminates.

15. A Machine Type Communication (MTC) apparatus comprises:

a digital-to-analog converter configured to convert a digital signal in a baseband frequency into an analog signal;

a frequency up-converter configured to up-convert the center frequency of the analog signal provided from the digital-to-analog converter according to a predetermined hopping frequency interval;

an amplifier configured to amplify a signal subjected to frequency up-conversion, provided from the frequency up-converter; and

a duplexer configured to provide the amplified signal provided from the amplifier to an antenna.

16. The MTC apparatus of claim 15, wherein the hopping frequency interval is set to a frequency interval corresponding to a minimum number of resource blocks included in a frequency band for MTC, and the frequency up-converter up-converts the center frequency according to the hoping frequency interval and a hopping index.

17. The MTC apparatus of claim 16, further comprising:

a low noise amplifier configured to amplify the signal provided from the duplexer;

a frequency down-converter configured to down-convert the center frequency of the signal provided from the low noise amplifier into a baseband frequency according to a predetermined hopping frequency interval; and

an analog-to-digital converter configured to convert the signal provided from the frequency down-converter into a digital signal.