Mobile communication method, relay node, and wireless base station
AssigneeNtt Docomo, Inc.
InventorsHideaki Takahashi, Wuri Andarmawanti Hapsari, Mikio Iwamura
Life of this patent
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Abstract
To reduce interference to an own receiver of a relay node due to concurrent transmission/reception processing in a Un radio bearer and in a Uu radio bearer when the relay node RN is handed over from a radio base station DeNB#1 to a radio base station DeNB#2. A mobile communication method includes a process A, in the handover procedure, of notifying the radio base station DeNB#2, by the relay node RN, of “Un subframe pattern #1” indicating a pattern of a Un subframe #1 and “RN subframe config req” indicating whether it is necessary to set a Un subframe #2 in a radio bearer #2 between the radio base station DeNB#2 and the relay node RN.
Claims8
A mobile communication method comprising:
- in a handover procedure of a relay node from a first radio base station to a second radio base station, a process A of notifying the second radio base station, by the relay node, of a pattern of a first relay node subframe having been used in a radio bearer between the first radio base station and the relay node and setting necessity information indicating whether it is necessary to set a second relay node subframe in a radio bearer between the second radio base station and the relay node by using a connection reconfiguration completion signal.
A relay node comprising:
- a transmission unit configured, in a handover procedure of the relay node from a first radio base station to a second radio base station, to notify the second radio base station of a pattern of a first relay node subframe having been used in a radio bearer between the first radio base station and the relay node and setting necessity information indicating whether it is necessary to set a second relay node subframe in a radio bearer between the second radio base station and the relay node by using a connection reconfiguration completion signal.
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A radio base station configured, in a handover procedure of a relay node from a first radio base station to a second radio base station, to operate as the second radio base station, and comprising:
- a reception unit configured to receive, from the relay node, a pattern of a first relay node subframe having been used in a radio bearer between the first radio base station and the relay node and setting necessity information indicating whether it is necessary to set a second relay node subframe in a radio bearer between the second radio base station and the relay node by using a connection reconfiguration completion signal, and to receive, from the first radio base station, a usage rate of the first relay node subframe;
- and
- a transmission unit configured, when having determined that it is necessary to set the second relay node subframe based on the setting necessity information, to determine a pattern of the second relay node subframe based on the pattern of the first relay node subframe and the usage rate of the first relay node subframe and to notify the relay node of the pattern of the second relay node subframe.
Dependencies are inferred from the claim text.