摘要:
In a retransmission control method for a multicast information distribution service, when information which requires retransmission is generated, a wireless terminal transmits the retransmission request for the information to an information distribution apparatus when a timing determined for the wireless terminal is reached. The information distribution apparatus which receives the retransmission request transmits retransmission information which indicates the information requested by the retransmission request, with respect to each of the wireless terminals within the service area, and retransmits the information requested by the retransmission request at a predetermined timing.
摘要:
A header structure of a packet, which is transferred to a mobile terminal through a packet communication network that includes a plurality of routers inclusive of communication routers configured to communicate with mobile terminals through radio, includes information about conditions of destination mobile terminals for which the packet is destined. This information serves as indication of destination.
摘要:
At each wireless terminal (10-40), a receiving unit (202) receives a signal transmitted from a wireless base station (1). A signal-to-noise ratio measurement unit (204) measures an S/N of this received signal. In the wireless base station (1), a data amount measurement unit (206) measures the amount of data stored in each buffer (11-41) therein. A maximum stay time measurement unit (208) measures a maximum stay time of packets in each buffer. A classification by maximum stay time unit (210) classifies each wireless terminal based on the maximum stay time. A slot assignment priority order determination unit (212) determines an assignment order of time slots to each wireless terminal based on the classification result in the classification unit, the receiving signal-to-noise ratio, the amount of data, and the maximum stay time.
摘要:
In a radio resource allocation method of the present invention, use-state information of radio resources and priority information of mobile stations using the same radio resources of both a base station of concern and neighboring base stations is detected at the base station of concern. A new radio resource is allocated to a link between the base station of concern and a requesting mobile station in a cell site of the base station of concern based on the use-state information and the priority information of both the base station and the neighboring base stations.
摘要:
In a method for allocating radio resource to radio terminals or communication connections in a system in which each of said radio terminals or communication connections requires a different communication quality, a first group including radio terminals or communication connections in which actual communication qualities are degraded more than required communication qualities is retrieved and a second group including radio terminals or communication connections in which actual communication qualities are favorable more than required communication qualities is retrieved. Then, radio resource is allocated to the radio terminals or communication connections in said first group with higher priority than the radio terminals or communication connections in said second group.
摘要:
At each wireless terminal (10-40), a receiving unit (202) receives a signal transmitted from a wireless base station (1). A signal-to-noise ratio measurement unit (204) measures an S/N of this received signal. In the wireless base station (1), a data amount measurement unit (206) measures the amount of data stored in each buffer (11-41) therein. A maximum stay time measurement unit (208) measures a maximum stay time of packets in each buffer. A classification by maximum stay time unit (210) classifies each wireless terminal based on the maximum stay time. A slot assignment priority order determination unit (212) determines an assignment order of time slots to each wireless terminal based on the classification result in the classification unit, the receiving signal-to-noise ratio, the amount of data, and the maximum stay time.