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

• US 10,608,696 B2
• Filed: 03/31/2016
• Issued: 03/31/2020
• 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, Ahn, Joonkui, Seo, Hanbyul, Yang, Suckchel
• Primary Examiner(s): Payne, David C
• Assistant Examiner(s): Hassan, Sarah
• Application Number:
  US15/560,108
• Publication Number:
  US 20180102806A1
• Time in Patent Office: 1,461 Days
• Field of Search: 375260, 370329
• 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 communicating with a machine type communication user equipment (MTC UE) in a wireless communication system is provided. A base station (BS) configures a radio frame for the MTC UE based on a duration of a frequency hopping subframe group (FH-SFG), and communicates with the MTC UE by using the configured radio frame.

Claims

1. A method performed by a base station (BS) and comprising:

configuring a radio frame which consists of N subframes,

wherein a first subframe of the radio frame scheduled for a first machine type communication (MTC) user equipment (UE) is used as frequency retuning subframe by a second MTC UE, and a last subframe of the radio frame scheduled for the second MTE UE is used as frequency retuning subframe by the first MTE UE; and

communicating with the first MTC UE and the second MTC UE based on the radio frame, by using a frequency hopping which is configured in every N subframes,

wherein the radio frame is configured based on a period, an offset and a duration of an MTC downlink control information (M-DCI) region, and

wherein the offset is configured differently for the first MTC UE and the second MTE UE.

2. The method of claim 1, wherein a duration of the radio frame is configured regardless of valid downlink (DL) subframes usable for MTC UE or valid uplink (UL) subframes usable for MTC UE.

3. The method of claim 1, wherein a duration of the radio frame is configured by counting valid DL subframes usable for MTC UE or valid UL subframes usable for MTC UE.

4. The method of claim 1, wherein a duration of the radio frame is configured as one radio frame or a half-radio frame.

5. The method of claim 1, wherein the radio frame is configured further based on a duration of an MTC transmission time interval (M-TTI).

6. The method of claim 1, wherein the period and the duration are configured by broadcast signaling.

7. The method of claim 1, wherein the duration is same as an MTC transmission time interval (M-TTI).

8. The method of claim 1, wherein the radio frame is configured further based on a duration of an MTC physical downlink shared channel (M-PDSCH) region.

9. The method of claim 1, wherein the radio frame is configured further based on a set of valid DL subframes and a set of valid UL subframes.

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

a memory configured to store information;

a transceiver configured to transmit and receive information; and

a processor coupled to the memory and the transceiver, the processor configured to;

configure a radio frame which consists of N subframes,

wherein a first subframe of the radio frame scheduled for a first machine type communication (MTC) user equipment (UE) is used as frequency retuning subframe by a second MTC UE, and a last subframe of the radio frame scheduled for the second MTE UE is used as frequency retuning subframe by the first MTE UE; and

control the transceiver to communicate with the first MTC UE and the second MTC UE based on the radio frame, by using a frequency hopping which is configured in every N subframes,

wherein the radio frame is configured based on a period, an offset and a duration of an MTC downlink control information (M-DCI) region, and

wherein the offset is configured differently for the first MTC UE and the second MTE UE.

11. The BS of claim 10, wherein a duration of the radio frame is configured regardless of valid downlink (DL) subframes usable for MTC UE or valid uplink (UL) subframes usable for MTC UE.

12. The BS of claim 10, wherein a duration of the radio frame is configured by counting valid DL subframes usable for MTC UE or valid UL subframes usable for MTC UE.

13. The BS of claim 10, wherein a duration of the radio frame is configured as one radio frame or a half-radio frame.

14. The BS of claim 10, wherein the radio frame is configured further based on a duration of an MTC transmission time interval (M-TTI).

15. The BS of claim 10, wherein the radio frame is configured further based on a duration of an MTC physical downlink shared channel (M-PDSCH) region.