摘要:
A radio communication system has a base station that forms a cell identified by a cell identifier, a geographic information storage unit that stores a geographic information element indicating a geographic characteristic of a location at which a cell is formed, a cell visit detector that detects that a user equipment that was visiting a first cell and starts to visit a second cell differing from the first cell, a cell information obtainer that obtains a second cell identifier corresponding to the second cell when the cell visit detector detects the visit to the second cell, and a geographic information identifier that retrieves, based on the second cell identifier, a geographic information element of the second cell that corresponds to the second identifier from the geographic information storage unit.
摘要:
A radio communication system includes: a visit information storage unit that stores plural visit information elements each indicating information on a visit to a cell visited by a user equipment; a cell visit detector that detects that the user equipment that was visiting a first cell starts a visit to a second cell differing from the first cell; a ping-ponging state determiner that determines whether a ping-ponging state has occurred, in which state start and ending of a visit to the second cell is repeated, wherein the determination is made based on a visit information element on a visit to the second cell visited by the user equipment; and a calculator that calculates a visit time length of the visit to the second cell in accordance with the determination by the ping-ponging state determiner.
摘要:
A second communication system starts transmission of direct data received from a core network apparatus without waiting to receive an end marker when the end marker indicating the last forwarding data forwarded from the first communication system is not received within an end marker waiting period.
摘要:
A mobile communication method according to the present invention includes the steps of: when a gateway apparatus (S-GW) is switched from a first state where downlink data is transmitted to a first radio access apparatus to a second state where the downlink data is transmitted to a second radio access apparatus, transferring, from the first, radio access apparatus to the second radio access apparatus, the downlink data which is received from the gateway apparatus and to which specific information is added; and transmitting, from the second radio access apparatus to a mobile station (due), transfer downlink data which is transferred from the first radio access apparatus and to which the specific information is added, before new downlink data transmitted from the gateway apparatus (S-GW).
摘要:
A radio communication system includes: a visit information storage unit that stores plural visit information elements each indicating information on a visit to a cell visited by a user equipment; a cell visit detector that detects that the user equipment that was visiting a first cell starts a visit to a second cell differing from the first cell; a ping-ponging state determiner that determines whether a ping-ponging state has occurred, in which state start and ending of a visit to the second cell is repeated, wherein the determination is made based on a visit information element on a visit to the second cell visited by the user equipment; and a calculator that calculates a visit time length of the visit to the second cell in accordance with the determination by the ping-ponging state determiner.
摘要:
A radio communication system includes: a visit information storage unit that stores plural visit information elements each indicating information on a visit to a cell visited by a user equipment; an event detector that detects an event that occurs in the user equipment; a cell identifier detector that detects a cell identifier that indicates a cell visited by the user equipment; and a location characteristic determiner that determines a location characteristic of the cell indicated by the cell identifier based on one or more visit information elements corresponding to the cell. The location characteristic determiner determines the location characteristic of a cell visited by the user equipment when the event detector detects a no-cell-change event other than a cell-change event that indicates a change in the cell identifier.
摘要:
A communication apparatus in a wireless communication system in which a plurality of cells with different bands are overlaid and which includes the communication apparatus and a user equipment include: an acquisition unit configured to acquire communication quality of the user equipment in a first cell in which the user equipment resides; a determination unit configured to determine whether to perform the switch to a second cell overlaid with the first cell based on the communication quality of the user equipment; and an instruction unit configured to instruct the user equipment to perform the switch to the second cell when the switch to the second cell overlaid with the first cell is determined.
摘要:
The present invention is designed to achieve improved system performance in mobile communication in which many terminals that are present in the same moving object are involved (group mobility). The mobile communication system of the present invention has a first communication system, which features a user terminal (11) that is present in a moving object (10), a first radio base station (12) that forms a cell in the moving object (10), and a first core network (40) that is connected with an external network (50), and a second communication system, which features a radio mobile station that is provided in the moving object, a second radio base station (20) that forms a cell on the path of the movement of the moving object (10), and a second core network (60) that is connected with the second radio base station (20). The first radio base station (12) and the radio mobile station (20) are connected via a user-plane interface and a control-plane interface between the radio base stations and the core networks.