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US 9,854,485 B2Granted
Mobile communication method and radio base station
AssigneeNtt Docomo, Inc.
InventorHideaki Takahashi
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AssigneeNtt Docomo, Inc.
InventorHideaki Takahashi
Estimating the term…
A mobile communication method according to the present invention includes a step of notifying, by a radio base station DeNB, a radio base station eNB of identification information (PCI or ECGI) of cells #1 to #3 subordinate to a plurality of relay nodes RN#1 to #3 as identification information of a cell subordinate to the radio base station DeNB when the plurality of relay nodes RN#1 to #3 are connected to the radio base station DeNB.
A mobile communication method comprising:
A radio base station, wherein
Dependencies are inferred from the claim text.
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Transmission or use of information for re-establishing the radio link: of access information of target access point
Supervisory, monitoring or testing arrangements: arrangements for optimising operational condition
Cell structures: hierarchical cell structures
Public Land Mobile systems, e.g. cellular systems: using dedicated repeater stations
About 4 years 8 months of term left · ends 20 Jun 2031 (estimated)
The present invention relates to a mobile communication method and a radio base station.
In an LTE (Long Term Evolution)-Advanced scheme, it is possible to use a relay node RN connectable to a radio base station DeNB (Doner eNB).
[NPL 1] 3GPP TR36.806 (V9.0.0), “Evolved Universal Terrestrial Radio Access (E-UTRA); Relay architectures for E-UTRA (LTE-Advanced) (Release.9)”, March, 2010
FIG. 1 is a diagram showing the entire configuration of a mobile communication system according to a first embodiment of the present invention.
FIG. 2 is a sequence diagram showing an operation of the mobile communication system according to the first embodiment of the present invention.
FIG. 3 is a diagram showing an example of “eNB Configuration Update” used in the mobile communication system according to the first embodiment of the present invention.
With reference to FIG. 1 through FIG. 9, a mobile communication system according to a first embodiment of the present invention will be described.
The mobile communication system according to the present embodiment is an LTE-Advanced mobile communication system, and includes a mobile management node MME (Mobility Management Entity), a radio base station eNB, a radio base station DeNB, and relay nodes RN#1 to #3 as illustrated in FIG. 1.
In this system, it is assumed that the relay node RN#1 manages a cell #1, the relay node RN#2 manages a cell #2, the relay node RN#3 manages a cell #3, and the radio base station DeNB manages a cell #A.