Communication method using multiple input multiple output and communication apparatus performing the same

Patent metadata

Field	Value
Publication number	US-10003444-B2
Application number	US-201615089361-A
Country	US
Kind code	B2
Filing date	Apr 1, 2016
Priority date	Apr 3, 2015
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

Provided herein is a communication method using MIMO (Multiple-Input Multiple-Output) technology for communicating with a terminal included in each of a plurality of base station cells using a communication apparatus, the method including calculating, by the communication apparatus, the number of terminals included inside a base station cell; generating, by the communication apparatus, pilot signals corresponding to the calculated number of terminals; and allocating, by the communication apparatus, the pilot signals to a terminal that may maximize a network capacity based on the generated pilot signals.

First claim

What is claimed is:

1. A communication method using aggregated MIMO (Multiple-Input Multiple-Output) technology to communicate with one or more terminal in a cellular telecommunications network, the method comprising:
calculating, by a communication apparatus, a number of terminals included inside a first base station cell;
generating, by the communication apparatus, pilot signals corresponding to the calculated number of terminals; and
allocating, by the communication apparatus, the pilot signals to a first terminal so that a network capacity is maximized based on the generated pilot signals,
wherein the calculating comprises calculating the number of terminals included in the first base station cell of the plurality of base station cells, and setting a number of terminals included in the rest of the plurality of base station cells to an arbitrary value.

2. The method according to claim 1 ,
wherein the calculating comprises calculating a number of terminals included in a plurality of base station cells including the first base station cell.

3. The method according to claim 2 ,
wherein the generating comprises generating the pilot signals corresponding to the number of terminals included in the entire plurality of base station cells.

4. The method according to claim 2 ,
wherein the allocating comprises allocating the pilot signals to the first terminal such that the first terminal and a terminal located in an adjacent base station cell do not interfere with each other.

5. The method according to claim 1 ,
wherein the generating comprises generating the pilot signals corresponding to a result of adding the number of terminals included in the first base station cell and the arbitrary value.

6. A communication apparatus in a cellular telecommunications network, the apparatus comprising:
a terminal calculator configured to calculate a number of terminals included inside a plurality of base station cells;
a pilot generator configured to generate pilot signals corresponding to the calculated number of terminals; and
a pilot allocator configured to allocate the pilot signals to a first terminal so that a network capacity is maximized based on the generated pilot signals when aggregated MIMO is used to communicate with the first terminal,
wherein the calculator calculates a number of terminals included in a plurality of base station cells including the first base station cell.

7. The apparatus according to claim 6 ,
further comprising a terminal selector configured to select a terminal to allocate the pilot signals to such that the network capacity is maximized.

8. The apparatus according to claim 6 ,
further comprising a network capacity calculator configured to calculate a network capacity of a communication system using the pilot signals allocated to a terminal inside the base station cell.

9. A communication method using aggregated MIMO (Multiple-Input Multiple-Output) technology to communicate with one or more terminal in a cellular telecommunications network, the method comprising:
calculating, by a communication apparatus, a number of terminals included inside a first base station cell;
generating, by the communication apparatus, pilot signals corresponding to the calculated number of terminals; and
allocating, by the communication apparatus, the pilot signals to a first terminal so that a network capacity is maximized based on the generated pilot signals,
wherein the calculating comprises calculating a number of terminals included in the first base station cell and setting a number of terminals in remaining base stations of the plurality of base station cells to an arbitrary value,
wherein the generating comprises generating the pilot signals corresponding to the number of terminals included in the entire plurality of base station cells, and
wherein the allocating comprises allocating the pilot signals to the first terminal such that the first terminal and a terminal located in an adjacent base station cell do not interfere with each other.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Kwi Hoon
• Kim Young Boo
• Kim Hyun Jae
• Oh Jin Tae
• You Woong Shik
• Yi Sungwon

Classifications

• H04L5/005 Primary

  of common pilots, i.e. pilots destined for multiple users or terminals · CPC title

• H04B7/0413 Primary

  MIMO systems · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0064

  Rate requirement of the data, e.g. scalable bandwidth, data priority · CPC title