IP Library › Granted Patent US 12,279,269
Granted Patent B2
US 12,279,269 · App. 17/528,324 · Granted Apr 15, 2025

Wireless communication method, wireless communication system, wireless terminal, and wireless base station

Inventors: Yoshiaki Ohta (Yokohama, JP); Yoshihiro Kawasaki (Yokohama, JP)
Assignee: FUJITSU LIMITED
H04W72/23H04L5/0053
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Quick Facts
Patent No.
US 12,279,269
App. No.
17/528,324
Granted
Apr 15, 2025
Kind
B2
Abstract

A wireless communication method including: transmitting, from a base station, a signal in a second control channel that is used for transmitting information indicating a resource of first resource information indicating a resource of a first control channel, and receiving, by a wireless terminal, second resource information that indicates the resource of the first control channel and that is transmitted from the wireless base station before a transmission of the second control channel from the wireless base station to the wireless terminal.

Claims (49)

1. A communication system comprising:

a base station configured to:

transmit a second resource information indicating a width of a resource in which a downlink control channel is to be assigned, the width being a width of the resource in a time domain, the second resource information being included in a Master Information Block message,

transmit, after transmitting the second resource information, a first resource information indicating the resource; and

a terminal configured to:

receive, when the terminal is in an idle mode, the second resource information from the base station, and

receive, after receiving the second resource information, the first resource information from the base station, and

detect downlink control information mapped to at least a part of the resource indicated by the first resource information.

2. The communication system according to claim 1 , wherein

the terminal is further configured to receive the downlink control information via the downlink control channel.

3. The communication system according to claim 2 , wherein the downlink control channel is an enhanced-physical downlink control channel.

4. The communication system according to claim 1 , wherein

the downlink control information indicates a wireless resource of a physical downlink shared channel, and

the terminal is further configured to determine the wireless resource of the physical downlink shared channel based on the downlink control information.

5. The communication system according to claim 1 , wherein

the first resource information is included in system information mapped to a physical broadcast channel.

6. The communication system according to claim 1 , wherein

the second resource information is transmitted at a timing of transmitting a reference signal or a synchronization signal.

7. A base station comprising:

a transmitter configured to:

transmit, to a terminal which is an idle mode, a second resource information indicating a width of a resource in which a physical downlink control channel is to be assigned, the width being a width of the resource in a time domain, the second resource information being included in a Master Information Block message,

transmit, after transmitting the second resource information, to the terminal, a first resource information indicating the resource; and

a processor configured to assign at least of a part of the resource indicated by the first resource information to downlink control information, wherein

the transmitter is further configured to transmit the downlink control information using the assigned at least of a part of the resource.

8. The base station according to claim 7 , wherein

the transmitter is further configured to transmit the downlink control information via the physical downlink control channel.

9. The base station according to claim 8 , wherein the physical downlink control channel is an enhanced-physical downlink control channel.

10. The base station according to claim 7 , wherein

the downlink control information indicates a wireless resource of a physical downlink shared channel, and

the transmitter is further configured to transmit a physical downlink shared channel using the wireless resource indicated by the downlink control information.

11. The base station according to claim 7 , wherein

the first resource information is included in system information mapped to a physical broadcast channel.

12. The base station according to claim 7 , wherein

the second resource information is transmitted at a timing of transmitting a reference signal or a synchronization signal.

13. A terminal comprising:

a receiver configured to:

receive, when the terminal is idle mode, a second resource information indicating a width of a resource in which a physical downlink control channel is to be assigned, the width being a width of the resource in a time, the second resource information being included in a Master Information Block message,

receive, after receiving the second resource information, a first resource information, the first resource information indicating the resource; and

processor circuitry configured to detect downlink control information mapped to at least a part of the resource indicated by the first resource information.

14. The terminal according to claim 13 , wherein

the receiver configured to receive the downlink control information via the physical downlink control channel.

15. The terminal according to claim 14 , wherein the physical downlink control channel is an enhanced-physical downlink control channel.

16. The terminal according to claim 13 , wherein

the downlink control information indicates a wireless resource of a physical downlink shared channel, and

the processor circuitry is further configured to determine the wireless resource of the physical downlink shared channel based on the downlink control information.

17. The terminal according to claim 13 , wherein

the first resource information is included in system information mapped to a physical broadcast channel.

18. The terminal according to claim 13 , wherein

the second resource information is transmitted at a timing of transmitting a reference signal or a synchronization signal.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2026
From: FUJITSU LIMITED
To: 1FINITY INC.
Reel/Frame 074197/0244 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2021
From: OHTA, YOSHIAKI; KAWASAKI, YOSHIHIRO
To: FUJITSU LIMITED
Reel/Frame 058165/0864 →
Continuity (3)
Continuation 14633265 · Feb 27, 2015
Continuation PCTJP2012006034 · Sep 21, 2012
Related Publication 20220078774A1 · Mar 10, 2022
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