Methods and apparatus for wireless communications
First Claim
1. A method for P-MP wireless data communications for which a plurality of mobile stations are connected to one wireless base station, comprising:
- a relay station that relays communications between the wireless base station and each mobile station, andthe relay station including steps of;
receiving a communications opportunity request message from each mobile station; and
forwarding each request message to the wireless base station in a transmission period assigned thereto,the wireless base station including steps of;
receiving a request message from each mobile station;
receiving a request message from each relay station; and
returning a response message that notifies the requestor of a communications opportunity assigned thereto in response to each request message, whereindifferent transmission periods are assigned to the mobile station and relay station with regard to the request messages.
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Accused Products
Abstract
The present invention provides a system for wireless data communications that allows, in P-MP wireless data communications, equally giving communications opportunities to mobile stations that directly communicate with a wireless base station and mobile stations that indirectly communicate therewith via a relay station and a communications method thereof. In comparison with the OFDM frame configuration prescribed in IEEE802.16, an OFDM frame configuration is characterized in that, in an uplink subframe, a ranging period and BW (bandwidth) request periods for a relay station are provided, and furthermore, a remaining message number notice period for which each relay station notifies the wireless base station of the number of remaining messages is provided. These periods are not of a contention base but bandwidths dedicated to the relay station.
27 Citations
16 Claims
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1. A method for P-MP wireless data communications for which a plurality of mobile stations are connected to one wireless base station, comprising:
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a relay station that relays communications between the wireless base station and each mobile station, and the relay station including steps of; receiving a communications opportunity request message from each mobile station; and forwarding each request message to the wireless base station in a transmission period assigned thereto, the wireless base station including steps of; receiving a request message from each mobile station; receiving a request message from each relay station; and returning a response message that notifies the requestor of a communications opportunity assigned thereto in response to each request message, wherein different transmission periods are assigned to the mobile station and relay station with regard to the request messages. - View Dependent Claims (2, 3, 4, 5)
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6. A system for P-MP wireless data communications for which a plurality of mobile stations are connected to one wireless base station, comprising:
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a relay station that relays communications between the wireless base station and each mobile station, and the relay station including means of; receiving a communications opportunity request message from each mobile station; and forwarding the request message to the wireless base station in a transmission period assigned thereto, and the wireless base station including means of;
receiving a request message from each mobile station;receiving the request message from the relay station; and returning a response message that notifies the requester of a communications opportunity assigned thereto in response to the request message, wherein different transmission periods are assigned to the mobile station and relay station with regard to the request messages. - View Dependent Claims (7, 8, 9, 10)
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11. A method for P-MP wireless data communications for which a plurality of mobile stations are connected to one wireless base station, comprising:
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a relay station that relays communications between the wireless base station and each mobile station, and the relay station including means of; receiving a packet addressed to the wireless base station from the mobile station; encapsulating the packet with a header whose source is the relay station; and transmitting the encapsulated packet to the wireless base station, the wireless base station including steps of; receiving the encapsulated packet; decapsulating the received packet; generating a response packet to the received packet; encapsulating the response packet with a header whose destination is the relay station; and transmitting the encapsulated response packet, and the relay station further including steps of; receiving the encapsulated response packet from the wireless base station; decapsulating the response packet; and transmitting the response packet to the mobile station. - View Dependent Claims (12, 13)
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14. A system for P-MP wireless data communications for which a plurality of mobile stations are connected to one wireless base station, comprising:
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a relay station that relays communications between the wireless base station and each mobile station, and the relay station including means of; receiving a packet addressed to the wireless base station from each mobile station; encapsulating the packet with a header whose source is the relay station; transmitting the encapsulated packet to the wireless mobile station; receiving an encapsulated response packet from the wireless mobile station; decapsulating the response packet; and transmitting the response packet to each mobile station, and the wireless base station including means of; receiving the encapsulated packet; decapsulating the received packet; generating a response packet to the received packet; encapsulating the response packet with a header whose destination is the relay station; and transmitting the encapsulated response packet. - View Dependent Claims (15, 16)
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Specification