CORE NETWORK DEVICE, RADIO COMMUNICATION BASE STATION DEVICE, AND RADIO COMMUNICATION METHOD
First Claim
1. A core network apparatus comprising:
- a user number counting section that counts a number of users joining a multimedia broadcast multicast service (MBMS) on a per tracking area basis;
a user number comparing section that compares the number of users counted, with a predetermined threshold, so as to select, when the number of users is equal to or greater than the threshold, multi-cell transmission whereby a plurality of radio communication base station apparatuses belonging to an identical frequency area transfer multimedia broadcast multicast service data in synchronization with each other, and select, when the number of users is less than the threshold, single cell transmission whereby a single radio communication base station apparatus accommodating users joining the multimedia broadcast multicast service in a cell, transfers multimedia broadcast multicast service data; and
a reporting section that reports one of multi-cell transmission and single cell transmission selected, to a radio communication base station apparatus under control.
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Accused Products
Abstract
It is possible to provide a core network device, a radio communication base station device, and a radio communication method which can improve the radio resource use efficiency of the entire network without increasing UE battery consumption. According to the devices and the method, a user quantity counting unit (163) of UPE (160) counts the number of UE which have performed a position registration in each position registration area containing a plurality of cells. A user quantity comparing unit (164) selects MCT if the counted UE quantity is not smaller than a predetermined threshold value and SCT if the counted UE quantity is smaller than the predetermined threshold value, thereby appropriately performing switching between SCT and MCT in accordance with the UE quantity. Only when the SCT is selected by the UPE (160), eNB counts the number of users in the cell managed by the local device.
49 Citations
13 Claims
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1. A core network apparatus comprising:
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a user number counting section that counts a number of users joining a multimedia broadcast multicast service (MBMS) on a per tracking area basis; a user number comparing section that compares the number of users counted, with a predetermined threshold, so as to select, when the number of users is equal to or greater than the threshold, multi-cell transmission whereby a plurality of radio communication base station apparatuses belonging to an identical frequency area transfer multimedia broadcast multicast service data in synchronization with each other, and select, when the number of users is less than the threshold, single cell transmission whereby a single radio communication base station apparatus accommodating users joining the multimedia broadcast multicast service in a cell, transfers multimedia broadcast multicast service data; and a reporting section that reports one of multi-cell transmission and single cell transmission selected, to a radio communication base station apparatus under control. - View Dependent Claims (2, 3)
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4. A radio communication base station apparatus comprising:
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an acquisition section that acquires from a core network apparatus a command for one of multi-cell transmission whereby a plurality of radio communication base station apparatuses belonging to an identical frequency area transfer multimedia broadcast multicast service (MBMS) data in synchronization with each other and single cell transmission whereby a single radio communication base station apparatus accommodating users joining the multimedia broadcast multicast service within a cell transfers the multimedia broadcast multicast service data; a counting section that performs counting about a cell under control of the radio communication base station apparatus only when a single cell transmission command is acquired; and a transfer section that transfers the multimedia broadcast multicast service data in a cell where there are users according to the counting result. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A radio communication terminal apparatus comprising:
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a data decision section that decides whether or not received multimedia broadcast multicast service data is lost and creates, upon deciding that the multimedia broadcast multicast service data is lost, a negative acknowledgment message for requesting a retransmission of the lost multimedia broadcast multicast service data; a received power measurement section that measures received power in each neighboring cell; and a transmission section that transmits the negative acknowledgment message and received power measurement result in each neighboring cell to a radio communication base station apparatus. - View Dependent Claims (12)
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13. A radio communication method comprising:
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counting, by a core network apparatus, a number of users joining a multimedia broadcast multicast service (MBMS) on a per tracking area basis; comparing, by a core network apparatus, the number of users counted, with a predetermined threshold, so as to select, when the number of users is equal to or greater than the threshold, multi-cell transmission whereby a plurality of radio communication base station apparatuses belonging to an identical frequency area transfer multimedia broadcast multicast service data in synchronization with each other, and select, when the number of users is less than the threshold, single cell transmission whereby a single radio communication base station apparatus accommodating a user joining the multimedia broadcast multicast service within a cell transfers multimedia broadcast multicast service data; reporting, by a core network apparatus, one of multi-cell transmission and single cell transmission selected, to radio communication base station apparatuses under control of the core network apparatus; acquiring, by a radio communication base station apparatus, a command for one of multi-cell transmission and single cell transmission, from the core network apparatus, counting, by a radio communication base station apparatus, about the cell under control of the radio communication base station apparatus only when a single cell transmission command is acquired; and transferring, by a radio communication base station apparatus, multimedia broadcast multicast service data in a cell where there are users according to the counting result.
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Specification