Method and apparatus for configuring frequency hopping pattern for MTC UE in wireless communication system

• US 10,404,320 B2
• Filed: 03/31/2016
• Issued: 09/03/2019
• Est. Priority Date: 03/31/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Yunjung
• Primary Examiner(s): Malek, Leila
• Application Number:
  US15/558,444
• Publication Number:
  US 20180069593A1
• Time in Patent Office: 1,251 Days
• Field of Search: 375132
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 1/7136 Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0012 Hopping in multicarrier systems for frequency hopping in spread spectrum systems H04B1/713
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

A method and apparatus for transmitting data to a machine type communication user equipment (MTC UE) in a wireless communication system is provided. A base station (BS) configures a frequency hopping in every specific number of subframes which corresponds to a frequency hopping granularity, and transmits data to the MTC UE by using the configured frequency hopping.

Claims

1. A method performed by a base station (BS) in a wireless communication system, the method comprising:

transmitting a configuration of a cell-specific frequency hopping pattern to a machine type communication user equipment (MTC UE) via system information;

allocating a physical downlink shared channel (PDSCH),

wherein a change in frequency location of the PDSCH, by a frequency hopping in every specific number of subframes, is related to a frequency hopping granularity and based on the cell-specific frequency hopping pattern; and

transmitting data to the MTC UE via the PDSCH,

wherein the frequency hopping granularity is configured based on a coverage enhancement (CE) level of the MTC UE.

2. The method of claim 1, wherein the frequency hopping is configured in every specific number of subframes regardless of a new transmission or invalid subframes, not usable for the MTC UE.

3. The method of claim 1, wherein the frequency location of the PDSCH is determined by a logical narrowband index.

4. The method of claim 1, wherein the frequency location of the PDSCH is determined by at least one of a subframe number or a frame number.

5. The method of claim 1, wherein the frequency hopping is configured based on a fixed offset.

6. The method of claim 1, wherein the frequency hopping is configured over either two narrowbands or four narrowbands.

7. The method of claim 6, wherein whether the frequency hopping is configured over either two narrowbands or four narrowbands is configured via a master information block (MIB) or a system information block (SIB).

8. A base station (BS) in a wireless communication system, the BS comprising:

a memory;

a transceiver; and

a processor, operatively coupled to the memory and the transceiver,

wherein the processor is configured to;

control the transceiver to transmit a configuration of a cell-specific frequency hopping pattern to a machine type communication user equipment (MTC UE) via system information,

allocate a physical downlink shared channel (PDSCH),

wherein a change in frequency location of the PDSCH, by a frequency hopping in every specific number of subframes, is related to a frequency hopping granularity and based on the cell-specific frequency hopping pattern, and

control the transceiver to transmit data to the MTC UE via the PDSCH,

wherein the frequency hopping granularity is configured based on a coverage enhancement (CE) level of the MTC UE.

9. The BS of claim 8, wherein the frequency hopping is configured in every specific number of subframes regardless of a new transmission or invalid subframes, not usable for transmitting to the MTC UE.

10. The BS of claim 8, wherein the frequency hopping is configured based on a fixed offset.

11. The BS of claim 8, wherein the frequency hopping is configured over either two narrowbands or four narrowbands.

12. The BS of claim 8, wherein whether the frequency hopping is configured over either two narrowbands or four narrowbands is configured via a master information block (MIB) or a system information block (SIB).