WIRELESS BASE STATION - NTT DOCOMO INC

Title:

WIRELESS BASE STATION

Document Type and Number:

Japanese Patent JP2013187648

Kind Code:

A

Abstract:

To reduce uplink interference between a mobile station UE#1 for which TA is controlled using "TA" in a cell #1 and a mobile station UE#2 for which TA is controlled using "TA" in a cell #11.

In the wireless base station eNB: a receiver 21 calculates "TA_macro" on the basis of a propagation delay T_pd, _macro in the cell #1, which is the time difference between the timing of transmission of a first uplink signal at the mobile station UE#1 and the timing of reception of the first uplink signal at the wireless base station eNB; and a transmitter 22 transmits, as "TA_pico", the sum of the original "TA_pico" and the offset (DL/UL OFFSET_pico) between the propagation delay T_pd, _macro in the cell #1 and a propagation delay T_pd, _pico in the cell #11, which is the time difference between the timing of transmission of a second uplink signal at a mobile station UE#2 and the timing of reception of the second uplink signal at the wireless base station eNB.

Inventors:

UCHINO TORU
UMESH ANIL
TAKAHASHI HIDEAKI
YAGYU KENGO

Application Number:

JP2012049822A

Publication Date:

September 19, 2013

Filing Date:

March 06, 2012

Export Citation:

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Assignee:

NTT DOCOMO INC

International Classes:

H04W72/12; H04W84/10

Foreign References:

US20110080896A1	2011-04-07
US20110080896A1	2011-04-07

Other References:

JPN6015039737; Ｅｒｉｃｓｓｏｎ，　ＳＴ-Ｅｒｉｃｓｓｏｎ: 'ＴＡ　ｆｏｒ　Ｓｃｅｌｌ［ｏｎｌｉｎｅ］' ３ＧＰＰ　ＴＳＧ-ＲＡＮ　ＷＧ４♯６０ｂｉｓ　Ｒ４-１１５１６２ , 20111003, インターネット＜ＵＲＬ：ｈｔｔｐ：／／ｗｗｗ．３ｇｐｐ．ｏｒｇ／ｆｔｐ／ｔｓｇ＿ｒａ
JPN6015039739; Ａｌｃａｔｅｌ-Ｌｕｃｅｎｔ: 'Ｄｉｓｃｕｓｓｉｏｎ　ｏｆ　ＳＣｅｌｌ　ｔｉｍｉｎｇ　ａｄｖａｎｃｅ　ｃａｌｃｕｌａｔｉｏｎ　ｕｓｉｎｇ　ｔｉｍｅ　ｄｉｆｆｅｒｅｎｃｅ　ｍｅａｓｕｒｅｍｅｎｔ［ｏｎｌｉｎｅ］' ３ＧＰＰ　ＴＳＧ-ＲＡＮ　ＷＧ４♯６０　Ｒ４-１１３９７１ , 20110817, インターネット＜ＵＲＬ：ｈｔｔｐ：／／ｗｗｗ．３ｇｐｐ．ｏｒｇ／ｆｔｐ／ｔｓｇ＿ｒａ
JPN6015039741; Ｈｕａｗｅｉ，　ＨｉＳｉｌｉｃｏｎ: 'Ｄｉｓｃｕｓｓｉｏｎ　ｏｎ　ｔｉｍｉｎｇ　ａｄｖａｎｃｅ　ｃａｌｃｕｌａｔｉｏｎ　ｕｓｉｎｇ　ｔｉｍｅ　ｄｉｆｆｅｒｅｎｃｅ　ｍｅａｓｕｒｅｍｅｎｔ［ｏｎｌｉｎｅ］' ３ＧＰＰ　ＴＳＧ-ＲＡＮ　ＷＧ４♯５９ＡＨ　Ｒ４-１１３４５０ , 20110624, インターネット＜ＵＲＬ：ｈｔｔｐ：／／ｗｗｗ．３ｇｐｐ．ｏｒｇ／ｆｔｐ／ｔｓｇ＿ｒａ
JPN6015039737; Ｅｒｉｃｓｓｏｎ，　ＳＴ-Ｅｒｉｃｓｓｏｎ: 'ＴＡ　ｆｏｒ　Ｓｃｅｌｌ［ｏｎｌｉｎｅ］' ３ＧＰＰ　ＴＳＧ-ＲＡＮ　ＷＧ４♯６０ｂｉｓ　Ｒ４-１１５１６２ , 20111003, インターネット＜ＵＲＬ：ｈｔｔｐ：／／ｗｗｗ．３ｇｐｐ．ｏｒｇ／ｆｔｐ／ｔｓｇ＿ｒａ
JPN6015039739; Ａｌｃａｔｅｌ-Ｌｕｃｅｎｔ: 'Ｄｉｓｃｕｓｓｉｏｎ　ｏｆ　ＳＣｅｌｌ　ｔｉｍｉｎｇ　ａｄｖａｎｃｅ　ｃａｌｃｕｌａｔｉｏｎ　ｕｓｉｎｇ　ｔｉｍｅ　ｄｉｆｆｅｒｅｎｃｅ　ｍｅａｓｕｒｅｍｅｎｔ［ｏｎｌｉｎｅ］' ３ＧＰＰ　ＴＳＧ-ＲＡＮ　ＷＧ４♯６０　Ｒ４-１１３９７１ , 20110817, インターネット＜ＵＲＬ：ｈｔｔｐ：／／ｗｗｗ．３ｇｐｐ．ｏｒｇ／ｆｔｐ／ｔｓｇ＿ｒａ
JPN6015039741; Ｈｕａｗｅｉ，　ＨｉＳｉｌｉｃｏｎ: 'Ｄｉｓｃｕｓｓｉｏｎ　ｏｎ　ｔｉｍｉｎｇ　ａｄｖａｎｃｅ　ｃａｌｃｕｌａｔｉｏｎ　ｕｓｉｎｇ　ｔｉｍｅ　ｄｉｆｆｅｒｅｎｃｅ　ｍｅａｓｕｒｅｍｅｎｔ［ｏｎｌｉｎｅ］' ３ＧＰＰ　ＴＳＧ-ＲＡＮ　ＷＧ４♯５９ＡＨ　Ｒ４-１１３４５０ , 20110624, インターネット＜ＵＲＬ：ｈｔｔｐ：／／ｗｗｗ．３ｇｐｐ．ｏｒｇ／ｆｔｐ／ｔｓｇ＿ｒａ

Attorney, Agent or Firm:

Hidekazu Miyoshi
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Ichitaro Ito
Hiroyuki Hashimoto

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