| Original document(57 pages) Authorized document(58 pages) 中文版 |
The object is to control interference in a permissible range by applying the CDMA system to signal collision in the conventional CSMA and TDMA base multihop systems and to relax the hidden terminal problem and others to enhance the throughput of the entire system by grouping of channel groups in multihop transmission and by control of transmission based on an interference level from another station. A multihop relay station calculates a desired signal level, for example, from an interference level at its own station of a packet sent from a mobile station, and notifies the mobile station of the desired signal level; and the mobile station calculates a transmission power amount of a packet from the desired signal level, determines whether the packet is transmissible to the station as a source of the desired signal level, on the basis of the transmission power amount, and transmits the packet by a power of the transmission power amount to the source station determined as a packet-transmissible station. On this occasion, an interference signal is weakened by assignment of channel groups 1, 2 for transmission of signals. |
Application Number
申请号 |
02160871 |
Application Date
申请日 |
2002.12.27 |
| Title 名称 |
Radio communication system, base station, trunking station, mobile station and group transmitting control method |
Publication Number
公开号 |
1430452 |
Publication Date
公开日 |
2003.07.16 |
| Approval Pub. Date |
2006.01.18 |
Granted Pub. Date |
2006.01.18 |
| International Classification 分类号 |
H04Q7/38;H04Q7/30;H04Q7/32;H04B7/26 |
Applicant(s) Name
申请人 |
NTT Docomo Inc. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Taketa Shinji;Kazuhara Jun;Eshino Shinobu |
| Attorney & Agent 代理人 |
li deshan |
| More information 更 多 信 息 |
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