Title:
通信端末装置及び通信方法
Document Type and Number:
Japanese Patent JP5428119
Kind Code:
B2
Abstract:
There is disclosed a communication terminal device capable of eliminating collision of access request signals simultaneously transmitted from communication terminal devices in a local cell, preventing generation of interference signal in another cell adjacent to the local cell, and improving the throughput in the local cell. There is also disclosed a base station device for controlling the transmission power of the access permission signal so as to prevent generation of an interference signal in another cell adjacent to the local cell. In this device, a use sub-channel selection unit (206) has a correspondence table between the reception quality of the pilot signals divided into classes and the sub-channel allocated to the classes. According to the correspondence table, the use sub-channel selection unit (206) selects a sub-channel group of RACH correlated to the measurement result of the reception quality of the pilot signals reported from the reception quality measurement unit (205). One sub-channel to be used for transmission of the access request signal is selected at random from the sub-channel group selected.
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| WO/2021/041415 | BEAM FAILURE RECOVERY IN A SECONDARY CELL |
| WO/2015/076501 | METHOD FOR PERFORMING RANDOM ACCESS PROCEDURE |
| WO/2021/138918 | RANDOM ACCESS METHOD AND APPARATUS |
Inventors:
Akihiko Nishio
Application Number:
JP2013089183A
Publication Date:
February 26, 2014
Filing Date:
April 22, 2013
Export Citation:
Assignee:
Joint company ip bridge No. 1
International Classes:
H04W74/08; H04W16/00; H04W16/30; H04W72/04
Domestic Patent References:
| JP2004320165A | ||||
| JP2000151494A |
Attorney, Agent or Firm:
Koichi Washida