Radio communication system, base station, trunking station, mobile station and group transmitting control method

A technology for a wireless communication system and a relay station, which is applied in the field of wireless communication systems and can solve the problems of increased communication volume, great influence on the service area, and decreased system processing capacity.
CN1430452AInactive Publication Date: 2003-07-16NTT DOCOMO INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NTT DOCOMO INC
Publication Date
2003-07-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

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.
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Description

technical field

[0001] The present invention relates to a wireless communication system, a base station, a relay station, a mobile station, and a packet transmission control method utilizing a multi-hop technology. Connection to the base station.

[0002] In the wireless communication system of the present invention, three stations, "base station", "relay station", and "mobile station", can be cited as stations related to one communication, but in the following description, "base station" means The core network is connected to other base stations. "Mobile station" refers to the terminal that initially requests packet transmission or finally receives the packet (that is, becomes the destination of the packet), and "relay station" refers to the terminal that relays the packet from the mobile station. A terminal that relays packets to or from a base station to a mobile station.

[0003] In addition, "packet transmission direction" is a general term for the "uplink direction" fr...

Claims

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