Radio relay station apparatus and mobile terminal apparatus
AssigneeNtt Docomo, Inc.
InventorsSatoshi Nagata, Tetsushi Abe
Life of this patent
Estimating the term…
Abstract
A radio relay station apparatus and a mobile terminal apparatus that, even if a radio relay station apparatus is provided, can reduce the amount of interference from the radio relay station apparatus and increase the throughput, are provided. The radio relay station apparatus of the present invention decides the number of mobile terminal apparatuses under the subject cell and controls transmission power based on this number of mobile terminal apparatuses, or measures the received power of the signal from another radio relay station apparatus or a radio base station apparatus and controls transmission power based on this received power.
Claims4
A radio relay station apparatus to relay a signal that is received via a backhaul link to a mobile terminal apparatus via an access link, the radio relay station apparatus comprising:
- a decision section that decides the number of mobile terminal apparatuses under a subject cell;
- and
- a transmission power control section that controls transmission power based on the number of mobile terminal apparatuses.
A radio relay method comprising the steps of:
- receiving a signal in a radio relay station apparatus via a backhaul link;
- relaying and transmitting the signal received via the backhaul link, from the radio relay station apparatus to a mobile terminal apparatus, via an access link;
- deciding the number of mobile terminal apparatuses under a subject cell;
- and
- controlling transmission power for relay and transmission based on the number of mobile terminal apparatuses.
A communication system comprising a radio base station apparatus, a radio relay station apparatus that relays a signal that is transmitted from the radio base station apparatus, and a mobile terminal apparatus that receives the signal relayed at the radio relay station apparatus, wherein the radio relay station apparatus comprises:
- a decision section that decides the number of mobile terminal apparatuses under a subject cell;
- and
- a transmission power control section that controls transmission power based on the number of mobile terminal apparatuses.
Dependencies are inferred from the claim text.