US9577776B2
Active / In Force
US
⏱️ 6.4 years remaining
Communication system, local area base station apparatus, mobile terminal apparatus and communication method
Assignee: NTT Docomo Inc
•
Filing: 2013-04-05
•
Granted: 2017-02-21
•
Expires: 2033-04-05
Abstract
Abstract The present invention is designed to provide a communication system, a local area base station apparatus, a mobile terminal apparatus and a communication method that can provide highly efficient local area radio access. In a communication system in which a mobile terminal apparatus performs radio communication with a wide area base station apparatus that covers a wide area, using a first carrier frequency, and performs radio communication with a local area base station apparatus that covers a local area, using a second carrier frequency, the wide area base station apparatus allocates different frequencies between the uplink and the downlink in the first carrier frequency and communicates with the mobile terminal apparatus, and the local area base station apparatus dynamically switches between the uplink and the downlink in the second carrier frequency on a per time basis based on the communication environment, and communicates with the mobile terminal apparatus.
Inventors
- 👤 Yoshihisa Kishiyama
- 👤 Anass Benjebbour
- 👤 Kazuaki Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:33
CPC Classifications
H; H04; H04J; H04J11/00; H04J11/0023; H04J11/005; H04J11/0056; H04L; H04L5/00; H04L5/0001; H04L5/0003; H04L5/0005; H04L5/0007; H04L5/001; H04L5/003; H04L5/0032; H04L5/0035; H04L5/14; H04L5/143; H04L5/1469; H04W; H04W72/00; H04W72/04; H04W72/044; H04W72/0446; H04W76/026; H04L5/0037; H04W16/00; H04W16/24; H04W16/32; H04W88/00; H04W88/02; H04W88/08
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
A user equipment comprising: a transmitting/receiving circuit that performs transmission/reception of a signal using carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time-division duplexing (TDD) are aggregated; and a processor copied to a memory, the processor having a control section that controls the transmitting/receiving circuit to dynamically switch between uplink and downlink in the second carrier, wherein the control section controls the transmitting/receiving circuit to transmit uplink control information in either the first carrier or the second carrier.
Claim 2
Dependent Claim
85 words
A user equipment comprising: a transmitting/receiving circuit that performs transmission/reception of a signal using carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time-division duplexing (TDD) are aggregated; and a processor copied to a memory, the processor having a control section that controls the transmitting/receiving circuit to dynamically switch between uplink and downlink in the second carrier, wherein the control section controls the transmitting/receiving circuit to transmit uplink control information in either the first carrier or the second carrier.
Claim 3
Dependent Claim
44 words
The user equipment according to claim 1 , wherein the control section, on the basis of a downlink control signal which is received by the transmitting/receiving circuit, controls the transmitting/receiving circuit to dynamically switch between the uplink and the downlink in the second carrier.
Claim 4
Dependent Claim
38 words
The user equipment according to claim 1 , wherein the control section controls the transmitting/receiving circuit simultaneously to transmit an uplink signal in the second carrier and to make the uplink subject to non-transmission in the first carrier.
Claim 5
Dependent Claim
38 words
The user equipment according to claim 2 , wherein the control section controls the transmitting/receiving circuit simultaneously to transmit an uplink signal in the second carrier and to make the uplink subject to non-transmission in the first carrier.
Claim 6
Dependent Claim
19 words
The user equipment according to claim 1 , wherein the second carrier has no compatibility with legacy component carriers.
Claim 7
Dependent Claim
19 words
The user equipment according to claim 2 , wherein the second carrier has no compatibility with legacy component carriers.
Claim 8
Dependent Claim
20 words
The user equipment according to claim 3 , wherein the second carrier has no compatibility with a legacy component carrier.
Claim 9
Dependent Claim
27 words
The user equipment according to claim 7 , wherein the first carrier has compatibility with the legacy component carrier and is used as a primary cell (PCell).
Claim 10
Dependent Claim
19 words
The user equipment according to claim 7 , wherein the second carrier is used as a secondary cell (SCell).
Claim 11
Dependent Claim
25 words
The user equipment according to claim 1 , wherein the control section controls the transmitting/receiving circuit to transmit uplink control information in the first carrier.
Claim 12
Dependent Claim
26 words
The user equipment according to claim 1 , wherein the control section controls the transmitting/receiving circuit to transmit an uplink control channel in the second carrier.
Claim 13
Dependent Claim
92 words
A base station communicating with a user equipment that uses carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time division duplexing (TDD) are aggregated, the base station comprising: a transmitting/receiving circuit that transmits a downlink signal in the second carrier; and a processor coupled to a memory, the processor having a control section that controls the transmitting/receiving circuit to dynamically switch between uplink and downlink in the second carrier, wherein the transmitting/receiving circuit receives uplink control information in the second carrier from the user equipment.
Claim 14
Dependent Claim
92 words
A base station communicating with a user equipment that uses carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time division duplexing (TDD) are aggregated, the base station comprising: a transmitting/receiving circuit that transmits a downlink signal in the second carrier; and a processor coupled to a memory, the processor having a control section that controls the transmitting/receiving circuit to dynamically switch between uplink and downlink in the second carrier, wherein the transmitting/receiving circuit receives uplink control information in the second carrier from the user equipment.
Claim 15
Dependent Claim
95 words
A base station communicating with a user equipment that uses carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time-division duplexing (TDD) are aggregated, the base station comprising: a transmitting/receiving circuit that transmits a downlink signal in the first carrier; and a processor coupled to memory, the processor having a control section that controls the transmitting/receiving circuit to transmit downlink control information for dynamically switching between uplink and downlink in the second carrier, wherein the transmitting/receiving circuit receives uplink control information in the first carrier from the user equipment.
Claim 16
Dependent Claim
95 words
A base station communicating with a user equipment that uses carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time-division duplexing (TDD) are aggregated, the base station comprising: a transmitting/receiving circuit that transmits a downlink signal in the first carrier; and a processor coupled to memory, the processor having a control section that controls the transmitting/receiving circuit to transmit downlink control information for dynamically switching between uplink and downlink in the second carrier, wherein the transmitting/receiving circuit receives uplink control information in the first carrier from the user equipment.
Claim 17
Dependent Claim
59 words
A radio communication method in a user equipment, comprising: receiving downlink signals using carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time-division duplexing (TDD) are aggregated; dynamically switching between uplink and downlink in the second carrier; and transmitting uplink control information by using either the first ca her or the second carrier.
Claim 18
Dependent Claim
59 words
A radio communication method in a user equipment, comprising: receiving downlink signals using carrier aggregation where a first carrier in frequency-division duplexing (FDD) and a second carrier in time-division duplexing (TDD) are aggregated; dynamically switching between uplink and downlink in the second carrier; and transmitting uplink control information by using either the first ca her or the second carrier.
References Cited (Backward Citations)
US20080279123A1
Cited
JP2004120237A
Cited
EP1565017A2
Cited
GB2412541A
Cited
JP2011512097A
Cited
WO2009100371A2
Cited
US20110019634A1
Cited
US20090291690A1
Cited
US20110310856A1
Cited
US20110044312A1
Cited
US20110090854A1
Cited
US20120213123A1
Cited
WO2011052643A1
Cited
US20110149813A1
Cited
WO2011087022A1
Cited
US20120281602A1
Cited
US20110190011A1
Cited
US20110200019A1
Cited
US20110268001A1
Cited
WO2012015154A1
Cited
US20130121301A1
Cited
US20120071190A1
Cited
WO2012044846A1
Cited
US20120087396A1
Cited
US20140078941A1
Cited
US20140003381A1
Cited
US20130114472A1
Cited
US20120307744A1
Cited
US20130003664A1
Cited
US20140119313A1
Cited
US20140105165A1
Cited
US20130039231A1
Cited
US20130194981A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2020-02-21 | 2020-08-22 | 2021-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2024-02-21 | 2024-08-22 | 2025-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2028-02-21 | 2028-08-22 | 2029-02-21 | $7700.00 | Pending Window |