Packet transmission control apparatus and packet transmission control method
AssigneeNtt Docomo, Inc.
InventorsHiroyuki Ishii, Yoshimasa Imamura, Akihito Hanaki, Takehiro Nakamura, Shinya Tanaka, Masafumi Usuda
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Abstract
A packet transmission control apparatus which performs transmission control of packets to a plurality of mobile stations includes an acquirer configured to acquire an average transmission rate of packets to each of the mobile stations and a guaranteed transmission rate of the packets; and a scheduler configured to perform scheduling to transmit packets to a specific mobile station preferentially, when an average transmission rate of the packets to the specific mobile station approaches the guaranteed transmission rate.
Claims20
A packet transmission control apparatus which performs transmission control of packets to a plurality of mobile stations, comprising:
- an acquirer configured to acquire an average transmission rate of packets to each of the plurality of mobile stations and a guaranteed transmission rate of the packets;
- and
- a scheduler configured to perform scheduling to transmit packets to a specific mobile station preferentially, when an average transmission rate of the packets to the specific mobile station approaches the guaranteed transmission rate, wherein
- the acquirer is configured to acquire the average transmission rate Rn of the packets to the mobile station #n, the guaranteed transmission rate Rntarget, a radio condition Rn between the packet transmission control apparatus and the mobile station #n, and predetermined parameters α and β, and
- the scheduler is configured to select a mobile station #n to which packets are transmitted based upon a relationship between Rnα and ( Rn−Rntarget)β, wherein α and β are within a range 0≦α,β≦1.
A packet transmission control apparatus which performs transmission control of packets to a plurality of mobile stations, comprising:
- an acquirer configured to acquire an average transmission rate of packets to each of the plurality of mobile stations and a guaranteed transmission rate of the packets;
- and
- a scheduler configured to perform scheduling to transmit packets to a specific mobile station preferentially, when an average transmission rate of the packets to the specific mobile station approaches the guaranteed transmission rate,
- wherein the acquirer is configured to acquire the average transmission rate Rn of the packets to the mobile station #n, the guaranteed transmission rate Rntarget, a radio condition Rn between the packet transmission control apparatus and the mobile station #n, and predetermined parameters α, β, and Rnminus, and
- the scheduler is configured to select a mobile station #n to which the packets are preferentially transmitted based upon a relationship amongst Rnα, ( Rn−Rntarget)β and (Rnminus)β, wherein α and β are within a range 0≦α,β≦1.
A packet transmission control apparatus which performs transmission control of packets to a plurality of mobile stations, comprising:
- an acquirer configured to acquire an average transmission rate of packets to each of the plurality of mobile stations and a guaranteed transmission rate of the packets;
- and
- a scheduler configured to perform scheduling to transmit packets to a specific mobile station preferentially, when an average transmission rate of the packets to the specific mobile station approaches the guaranteed transmission rate,
- wherein the scheduler is configured to manage a priority class PCn for each of the mobile stations #n, the priority class PCn being related to transmission of the packet, and
- the acquirer is configured to acquire the average transmission rate Rn of the packets to the mobile station #n, the guaranteed transmission rate Rntarget, a radio condition Rn between the packet transmission control apparatus and the mobile station #n, and predetermined parameters αPCn and βPCn in accordance with the priority classes PCn, and to select a mobile station #n to which the packets are transmitted preferentially based upon a relationship between Rnαpcn and ( Rn−Rntarget)βpcn, wherein αPCn and βPCn are within a range 0≦αPCn, βPCn≦1.
A packet transmission control apparatus which performs transmission control of packets to a plurality of mobile stations, comprising:
- an acquirer configured to acquire an average transmission rate of packets to each of the plurality of mobile stations and a guaranteed transmission rate of the packets;
- and
- a scheduler configured to perform scheduling to transmit packets to a specific mobile station preferentially, when an average transmission rate of the packets to the specific mobile station approaches the guaranteed transmission rate,
- wherein the scheduler is configured to manage a priority class PCn for each of the mobile stations #n, the priority class PCn being related to transmission of the packets,
- the acquirer is configured to acquire the average transmission rate Rn of the packets to the mobile station #n, the guaranteed transmission rate Rntarget, a radio condition Rn between the packet transmission control apparatus and the mobile station #n, a predetermined parameter Rnminus related to the mobile station #n, and predetermined parameters αPCn and βPCn in accordance with the priority classes PCn, and
- the scheduler is configured to select a mobile station #n to which the packets are transmitted preferentially based upon a relationship amongst Rnαpcn, ( Rn−Rntarget)βpcn and (Rnminus)βpcn, wherein αPCn and βPCn are within a range 0≦αPCn, βPCn≦1.
A packet transmission control method for performing transmission control of packets to a plurality of mobile stations, the method comprising:
- acquiring an average transmission rate of packets to each of the plurality of mobile stations and a guaranteed transmission rate of the packets, and
- performing scheduling to transmit packets to a specific mobile station preferentially, when an average transmission rate of the packets to the specific mobile station approaches the guaranteed transmission rate, wherein said step of acquiring further includes,
- acquiring the average transmission rate Rn of the packets to the mobile station #n, the guaranteed transmission rate Rntarget, a radio condition Rn between a packet transmission control apparatus and the mobile station #n, and predetermined parameters α and β,
- and the set of scheduling further includes,
- selecting a mobile station #n to which packets are transmitted preferentially based upon a relationship between Rnα and ( Rn−Rntarget)β, wherein α and β are within a range 0≦α,β≦1.
Dependencies are inferred from the claim text.