Apparatus for transceiving signals using a TDD (time division duplex) frame structure in a wireless communication system and method thereof

• US 9,998,210 B2
• Filed: 06/17/2013
• Issued: 06/12/2018
• Est. Priority Date: 06/17/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yuk, Youngsoo, Chung, Jaehoon, Choi, Hyeyoung, Ko, Hyunsoo
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Lalchinthang, Vanneilian
• Application Number:
  US14/408,532
• Publication Number:
  US 20150162979A1
• Time in Patent Office: 1,821 Days
• Field of Search: 370280
• CPC Class Codes: H04B 7/2643 using time-division multiple access [TDMA] H04B7/2615, H04B7/2618 take precedence
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0069 Allocation based on distance or geographical location allocation based on terminal or device properties in general, H04W72/51
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A method of transceiving a signal by a base station using a TDD frame structure in a wireless communication system, includes transceiving the signal using a TDD frame in accordance with the TDD frame structure, wherein the TDD frame comprises a static downlink subframe region, a static uplink subframe region and a dynamic region changeable into a downlink subframe or an uplink subframe, wherein the TDD frame is configured in a manner that at least one of the static downlink subframe region, the status uplink subframe region and the dynamic region is assigned to a user equipment in consideration of a location of the user equipment in a cell, and wherein the signal is transceived with the user equipment via at least one region assigned in the TDD frame.

Claims

1. A method for transceiving signals by a base station (BS) based on a time division duplex (TDD) frame configuration in a wireless communication system, the method comprising:

performing a scheduling for a user equipment (UE) according to the TDD frame configuration, the TDD frame configuration being configured for the UE based on a location of the UE within a cell belonging to the base station,

wherein a number of uplink subframes of the TDD frame configuration is changeable based on the location of the UE,

wherein the uplink subframes in the TDD frame configuration comprises a fixed uplink subframe and an unfixed uplink subframe, and

wherein the unfixed uplink subframe can be flexibly changed to a downlink subframe by the base station; and

transmitting, to the UE, a first transmit power attenuation value of the unfixed uplink subframe when a subframe of a neighbor base station corresponding to a timing of the unfixed uplink subframe of the base station is configured as a downlink subframe; and

transmitting, to the UE, a second transmit power attenuation value of the unfixed uplink subframe, when the subframe of the neighbor base station corresponding to the timing of the unfixed uplink subframe of the base station is configured as an uplink subframe,

wherein the first transmit power attenuation value of the unfixed uplink subframe is larger than the second transmit power attenuation value of the unfixed uplink subframe, and

wherein the first and second transmit power attenuation values of the unfixed uplink subframe are larger than a transmit power attenuation value of the fixed uplink subframe.

2. The method of claim 1, wherein the TDD frame configuration is a UE-specific TDD frame configuration.

3. The method of claim 1, wherein the TDD frame configuration is changeable based on a data traffic characteristic of the base station.

4. The method of claim 1, further comprising:

sharing the TDD frame configuration configured for the base station with another base station.

5. A method for transceiving signals by a user equipment (UE) based on a time division duplex (TDD) frame configuration in a wireless communication system, the method comprising:

receiving signals according to the TDD frame configuration, the TDD frame configuration being configured for the UE based on a location of the UE within a cell belonging to a base station,

wherein a number of uplink subframes of the TDD frame configuration is changeable based on the location of the UE,

wherein the uplink subframes in the TDD frame configuration comprises a fixed uplink subframe and an unfixed uplink subframe, and

wherein the unfixed uplink subframe can be flexibly changed to a downlink subframe by the base station;

receiving, from the base station, a first transmit power attenuation value of the unfixed uplink subframe when a subframe of a neighbor base station corresponding to a timing of the unfixed uplink subframe of the base station is configured as a downlink subframe; and

receiving, from the base station, a second transmit power attenuation value of the unfixed uplink subframe, when the subframe of the neighbor base station corresponding to the timing of the unfixed uplink subframe of the base station is configured as an uplink subframe,

wherein the first transmit power attenuation value of the unfixed uplink subframe is larger than the second transmit power attenuation value of the unfixed uplink subframe, and

wherein the first and second transmit power attenuation values of the unfixed uplink subframe are larger than a transmit power attenuation value of the fixed uplink subframe.

6. The method of claim 5, wherein the TDD frame configuration is changeable based on a data traffic characteristic of the base station.

7. A base station (BS) for transceiving signals based on a time division duplex (TDD) frame configuration in a wireless communication system, the BS comprising:

a processor configured to perform a scheduling for a user equipment (UE) according to the TDD frame configuration, the TDD frame configuration being configured for the UE based on a location of the UE within a cell belonging to the base station,

wherein a number of uplink subframes of the TDD frame configuration is changeable based on the location of the UE; and

wherein the uplink subframes in the TDD frame configuration comprises a fixed uplink subframe and an unfixed uplink subframe, and

wherein the unfixed uplink subframe can be flexibly changed to a downlink subframe by the base station; and

a transmitter configured to;

transmit, to the UE, a first transmit power attenuation value of the unfixed uplink subframe when a subframe of a neighbor base station corresponding to a timing of the unfixed uplink subframe of the base station is configured as a downlink subframe; and

transmit, to the UE, a second transmit power attenuation value of the unfixed uplink subframe, when the subframe of the neighbor base station corresponding to the timing of the unfixed uplink subframe of the base station is configured as an uplink subframe,

wherein the first transmit power attenuation value of the unfixed uplink subframe is larger than the second transmit power attenuation value of the unfixed uplink subframe, and

wherein the first and second transmit power attenuation values of the unfixed uplink subframe are larger than a transmit power attenuation value of the fixed uplink subframe.

8. The BS of claim 7, wherein the first TDD frame configuration is a UE-specific TDD frame configuration.

9. A user equipment (UE) for transceiving signals based on a time division duplex (TDD) frame configuration in a wireless communication system, the UE comprising:

a receiver configured to receive signals according to a TDD frame configuration, the TDD frame configuration being configured for the UE based on a location of the UE within a cell belonging to a base station,

wherein a number of uplink subframes of the TDD frame configuration is changeable based on a location of the UE;

wherein the uplink subframes in the TDD frame configuration comprises a fixed uplink subframe and an unfixed uplink subframe,

wherein the unfixed uplink subframe can be flexibly changed to a downlink subframe by the base station, and

wherein the receiver is further configured to;

receive, from the base station, a first transmit power attenuation value of the unfixed uplink subframe when a subframe of a neighbor base station corresponding to a timing of the unfixed uplink subframe of the base station is configured as a downlink subframe; and

receive, from the base station, a second transmit power attenuation value of the unfixed uplink subframe, when the subframe of the neighbor base station corresponding to the timing of the unfixed uplink subframe of the base station is configured as an uplink subframe,

wherein the first transmit power attenuation value of the unfixed uplink subframe is larger than the second transmit power attenuation value of the unfixed uplink subframe, and

wherein the first and second transmit power attenuation values of the unfixed uplink subframe are larger than a transmit power attenuation value of the fixed uplink subframe.

10. The UE of claim 9, wherein the TDD frame configuration is changeable based on a data traffic characteristic of the base station.