Apparatus and method for making QOS-supporting polling list
First Claim
1. A coordinator polling list making apparatus comprises:
- a controlled contention frame transmitter, which when making a polling list is requested, generates a controlled contention frame and transmits the controlled contention frame to stations on a network through a predetermined channel using a broadcast method after a period of time corresponding to a priority inter-frame space lapses since receipt of the request of making a polling list;
a reservation request frame receiver, which receives a reservation request frame from each of the stations through the predetermined channel as a response to the controlled contention frame during a controlled contention interval designated by the controlled contention frame; and
a polling list making unit, which when the reservation request frame receiver receives the reservation request frame, allocates a poll frame transmission sequence to the stations, from which the reservation request frame is received, using a first come first serve method based on a sequence in which reservation request frames arrive and makes a polling list comprising the poll frame transmission sequence.
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Accused Products
Abstract
An apparatus and method for making a polling list based on IEEE 802.11e standards are provided. The apparatus includes a coordinator polling list making apparatus, which generates a controlled contention frame, transmits the controlled contention frame to stations on a network through a channel using a broadcast method, and when a reservation request frame from each of the stations is received as a response to the controlled contention frame through the channel during a controlled contention interval designated by the controlled contention frame, allocates a poll frame transmission sequence to the stations, from which the reservation request frame is received, using a first come first serve method based on a sequence in which reservation request frames arrive and makes a polling list including the poll frame transmission sequence; and a station polling list making apparatus, which when the controlled contention frame is received through the channel from the coordinator polling list making apparatus, contends for use of the channel according to a user priority value of a data frame so as to acquire an exclusive right of using the channel, and when the exclusive right is acquired, generates a reservation request frame as a response to the controlled contention frame and transmits the reservation request frame to the coordinator polling list making apparatus through the channel.
49 Citations
35 Claims
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1. A coordinator polling list making apparatus comprises:
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a controlled contention frame transmitter, which when making a polling list is requested, generates a controlled contention frame and transmits the controlled contention frame to stations on a network through a predetermined channel using a broadcast method after a period of time corresponding to a priority inter-frame space lapses since receipt of the request of making a polling list;
a reservation request frame receiver, which receives a reservation request frame from each of the stations through the predetermined channel as a response to the controlled contention frame during a controlled contention interval designated by the controlled contention frame; and
a polling list making unit, which when the reservation request frame receiver receives the reservation request frame, allocates a poll frame transmission sequence to the stations, from which the reservation request frame is received, using a first come first serve method based on a sequence in which reservation request frames arrive and makes a polling list comprising the poll frame transmission sequence. - View Dependent Claims (2, 3, 4, 5)
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6. A station polling list making apparatus comprising:
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a controlled contention frame receiver, which receives a controlled contention frame through a predetermined channel from a coordinator station among stations on a network; and
a reservation request frame transmitter, which when the controlled contention frame is received by the controlled contention frame receiver, contends for use of the predetermined channel according to a user priority value of a data frame during a controlled contention interval designated by the controlled contention frame so as to acquire an exclusive right of using the predetermined channel, generates a reservation request frame as a response to the controlled contention frame when the exclusive right is acquired, and transmits the reservation request frame to the coordinator station through the predetermined channel. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An apparatus for making a polling list, comprising:
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a coordinator polling list making apparatus, which when making a polling list is requested, generates a controlled contention frame and transmits the controlled contention frame to stations on a network through a predetermined channel using a broadcast method after a period of time corresponding to a priority inter-frame space lapses since receipt of the request of making a polling list, and when a reservation request frame from each of the stations is received as a response to the controlled contention frame through the predetermined channel during a controlled contention interval designated by the controlled contention frame, allocates a poll frame transmission sequence to the stations, from which the reservation request frame is received, using a first come first serve method based on a sequence in which reservation request frames arrive and makes a polling list comprising the poll frame transmission sequence; and
a station polling list making apparatus, which when the controlled contention frame is received through the predetermined channel from the coordinator polling list making apparatus, contends for use of the predetermined channel according to a user priority value of a data frame during the controlled contention interval designated by the controlled contention frame so as to acquire an exclusive right of using the predetermined channel, and when the exclusive right is acquired, generates a reservation request frame as a response to the controlled contention frame and transmits the reservation request frame to the coordinator polling list making apparatus through the predetermined channel. - View Dependent Claims (13, 14, 15, 16)
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17. A method of making a coordinator polling list, comprising:
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when making a polling list is requested, generating a controlled contention frame and transmitting the controlled contention frame to stations on a network through a predetermined channel using a broadcast method after a period of time corresponding to a priority inter-frame space lapses since receipt of the request of making a polling list;
receiving a reservation request frame from each of the stations as a response to the controlled contention frame through the predetermined channel during a controlled contention interval designated by the controlled contention frame;
when the reservation request frame is received, allocating a poll frame transmission sequence to the stations, from which the reservation request frame is received, using a first come first serve method based on a sequence in which reservation request frames arrive and making a polling list comprising the poll frame transmission sequence. - View Dependent Claims (18, 19, 20, 21, 33)
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22. A method of making a station polling list, comprising:
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(a) receiving a controlled contention frame through a predetermined channel from a coordinator station among stations on a network; and
(b) when the controlled contention frame is received, contending for use of the predetermined channel according to a user priority value of a data frame during a controlled contention interval designated by the controlled contention frame so as to acquire an exclusive right of using the predetermined channel, generating a reservation request frame as a response to the controlled contention frame when the exclusive right is acquired, and transmitting the reservation request frame to the coordinator station through the predetermined channel. - View Dependent Claims (23, 24, 25, 26, 27, 34)
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28. A method of making a polling list, comprising:
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(a) when making a polling list is requested, generating a controlled contention frame and transmitting the controlled contention frame to stations on a network through a predetermined channel using a broadcast method after a period of time corresponding to a priority inter-frame space lapses since receipt of the request of making a polling list, and when a reservation request frame from each of the stations is received as a response to the controlled contention frame through the predetermined channel during a controlled contention interval designated by the controlled contention frame, allocating a poll frame transmission sequence to the stations, from which the reservation request frame is received, using a first come first serve method based on a sequence in which reservation request frames arrive and making a polling list comprising the poll frame transmission sequence; and
(b) when the controlled contention frame is received through the predetermined channel, contending for use of the predetermined channel according to a user priority value of a data frame during the controlled contention interval designated by the controlled contention frame so as to acquire an exclusive right of using the predetermined channel, and when the exclusive right is acquired, generating a reservation request frame as a response to the controlled contention frame and transmitting the reservation request frame to the coordinator polling list making apparatus through the predetermined channel. - View Dependent Claims (29, 30, 31, 32, 35)
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Specification