Method for allocating resource for device for wireless communication and base station for same

• US 9,848,427 B2
• Filed: 05/27/2014
• Issued: 12/19/2017
• Est. Priority Date: 05/27/2013
• Status: Active Grant

• Current Assignee: Rosedale Dynamics LLC
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Kitae, Chung, Jaehoon, Kim, Jinmin
• Primary Examiner(s): Jaroenchonwanit, Bunjob
• Application Number:
  US14/889,754
• Publication Number:
  US 20160081091A1
• Time in Patent Office: 1,302 Days
• Field of Search: None
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• 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 5/1461 Suppression of signals in the return path, i.e. bidirectional control circuits
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A method of allocating a resource for user equipments in a base station in a full duplex radio (FDR) communication environment is disclosed. The method includes determining an FDR frequency band for performing FDR communication with a plurality of user equipments, selecting a first user equipment and a second user equipment among the plurality of user equipments, a correlation between the first and second user equipments being less than a threshold value, and allocating a first section as a downlink frequency resource for the first user equipment and an uplink frequency resource for the second user equipment, and allocating a second section as an uplink frequency resource for the first user equipment and a downlink frequency resource for the second user equipment, the first section and the second section being parts of the FDR frequency band.

Claims

1. A method of allocating a resource for a user equipment in a base station in a full duplex radio (FDR) communication environment, the method comprising:

determining an FDR frequency band for performing FDR communication with a plurality of user equipments;

selecting a first user equipment and a second user equipment among the plurality of user equipments, wherein a correlation between the first and second user equipments is less than a threshold value;

allocating a first section as a downlink frequency resource for the first user equipment and an uplink frequency resource for the second user equipment, and allocating a second section as an uplink frequency resource for the first user equipment and a downlink frequency resource for the second user equipment, wherein the first section and the second section are parts of the FDR frequency band;

receiving an uplink pilot signal from the plurality of user equipments; and

measuring the correlation using the uplink pilot signal.

2. The method according to claim 1, further comprising:

performing downlink communication with the first user equipment and uplink communication with the second user equipment simultaneously through the first section, and performing uplink communication with the first user equipment and downlink communication with the second user equipment simultaneously through the second section.

3. The method according to claim 1, wherein the measuring the correlation includes measuring an interference correlation that is between the user equipments and that indicates a distance between the user equipments within coverage of the base station, and

wherein the interference correlation decreases as the distance increases.

4. The method according to claim 1, wherein the determining the FDR frequency band includes determining a frequency band allowing self interference cancellation to be performed to a degree greater than or equal to a threshold value through an antenna cancellation technique.

5. The method according to claim l, wherein:

the selecting comprises selecting a third user equipment in addition to the first user equipment and the second user equipment, a correlation between the first, second and third user equipments being less than a threshold value,

wherein the allocating comprises allocating the first section as the downlink frequency resource for the first user equipment and the uplink frequency resource for the second user equipment, allocating the second section as the downlink frequency resource for the second user equipment and an uplink frequency resource for the third user equipment, and allocating a third section as a downlink frequency resource for the third user equipment and an uplink frequency resource for the first user equipment, and

wherein the third section is another part of the FDR frequency band.

6. A base station for allocating a resource for a user equipment in a full duplex radio (FDR) communication environment, the base station comprising:

a transmitter;

a receiver; and

a processor connected to the transmitter and the receiver to support resource allocation to the user equipment,

wherein the processor;

determines an FDR frequency band for conducting FDR communication with plurality of user equipments,

selects a first user equipment and a second user equipment among the plurality of user equipments, a correlation between the first and second user equipments being less than a threshold value,

allocates a first section as a downlink frequency resource for the first user equipment and an uplink frequency resource for the second user equipment, and a second section as an uplink frequency resource for the first user equipment and a downlink frequency resource for the second user equipment, wherein the first section and the second section are parts of the FDR frequency band,

receives an uplink pilot signal from the plurality of user equipments, and measures the correlation using the uplink pilot signal.

7. The base station according to claim 6, wherein the processor performs downlink communication with the first user equipment and uplink communication with the second user equipment simultaneously through the first section, and performs uplink communication with the first user equipment and downlink communication with the second user equipment simultaneously through the second section.

8. The base station according to claim 6, wherein, to measure the correlation, the processor further measures an interference correlation that is between the user equipments and that indicates a distance between the user equipments within coverage of the base station, and

wherein the interference correlation decreases as the distance increases.

9. The base station according to claim 6, wherein, to determine the FDR frequency band, the processor further determines a frequency band allowing self interference cancellation to be performed to a degree greater than or equal to a threshold value through an antenna cancellation technique.

10. The base station according to claim 6, wherein the processor selects a third user equipment in addition to the first user equipment and the second user equipment, a correlation between the first, second and third user equipments being less than a threshold value,

wherein the processor allocates the first section as the downlink frequency resource for the first user equipment and the uplink frequency resource for the second user equipment, allocates the second section as the downlink frequency resource for the second user equipment and an uplink frequency resource for the third user equipment, and allocates a third section as a downlink frequency resource for the third user equipment and an uplink frequency resource for the first user equipment, and

wherein the third section is another part of the FDR frequency band.