TRANSMISSIONS TO MULTIPLE STATIONS IN WIRELESS COMMUNICATION SYSTEMS
First Claim
1. A method for coordinating and conducting transmissions to a plurality of users during a transmission opportunity, comprising:
- transmitting a frame to one or more users selected from the group consisting of a clear-to-send frame and a request-to-send frame, the frame establishes a transmitter as a holder of a transmission opportunity and comprises an address of the transmitter and a transmission interval;
transmitting a request-to-send frame to a first user during the transmission interval, the request-to-send frame indicates the address of the transmitter and an address of the first user;
receiving a clear-to-send frame from the first user responsive to the request-to-send frame;
transmitting data to the first user;
transmitting a request-to-send frame to a second user during the transmission interval, the request-to-send frame indicates the address of the transmitter and an address of the second user;
receiving a clear-to-send frame from the second user responsive to the request-to-send frame; and
transmitting data to the second user.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and methodologies are described that facilitate coordinating and conducting transmissions to multiple stations in a wireless communication system during a single transmission opportunity. A holder of a transmission opportunity can communicate a request-to-send message or a self-addressed clear-to-send message to one or more stations to establish the transmission opportunity. Subsequently, data transmissions with respective stations can be initiated by transmitting request-to-send messages to the respective stations. At each receiving station, the source address of a received request-to-send message is compared to the address of the holder of the transmission opportunity. If the addresses match for a given request-to-send message, the receiving station transmits a clear-to-send message to the holder of the transmission opportunity in response to the request-to-send message.
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Citations
50 Claims
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1. A method for coordinating and conducting transmissions to a plurality of users during a transmission opportunity, comprising:
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transmitting a frame to one or more users selected from the group consisting of a clear-to-send frame and a request-to-send frame, the frame establishes a transmitter as a holder of a transmission opportunity and comprises an address of the transmitter and a transmission interval; transmitting a request-to-send frame to a first user during the transmission interval, the request-to-send frame indicates the address of the transmitter and an address of the first user; receiving a clear-to-send frame from the first user responsive to the request-to-send frame; transmitting data to the first user; transmitting a request-to-send frame to a second user during the transmission interval, the request-to-send frame indicates the address of the transmitter and an address of the second user; receiving a clear-to-send frame from the second user responsive to the request-to-send frame; and transmitting data to the second user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless communications apparatus, comprising:
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a memory that stores data relating to an address of the wireless communications apparatus and a transmission opportunity (TXOP) duration; and a processor configured to transmit at least one of a clear-to-send message or a request-to-send message to one or more stations, the at least one message comprises the address of the wireless communications apparatus;
transmit respective request-to-send messages indicating the address of the wireless communication apparatus to respective stations;
receive respective clear-to-send messages from the respective stations; and
transmit data to the respective stations. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus that facilitates assigning a plurality of users for communication during a transmission interval, comprising:
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means for transmitting one or more of a clear-to-send message and a request-to-send message to one or more stations that includes a transmitter address, a receiver address, and a length of the transmission interval; means for transmitting request-to-send messages to respective stations for which data is to be transmitted; and means for receiving clear-to-send messages from the respective stations in response to the request-to-send messages.
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24. A computer-readable medium, comprising:
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code for causing a computer to identify a communication interval; code for causing a computer to transmit a message to one or more users in a plurality of users to establish a transmission opportunity for communication with the plurality of users during the communication interval; code for causing a computer to communicate a request message to a first user in the plurality of users during the communication interval; code for causing a computer to receive a response message from the first user; code for causing a computer to communicate a request message to a second user in the plurality of users during the communication interval; and code for causing a computer to receive a response message from the second user.
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25. An integrated circuit that executes computer-executable instructions for transmitting to multiple stations during a transmission period, the instructions comprising:
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establishing a transmission opportunity at least in part by transmitting a message to one or more stations in the plurality of stations that specifies a transmitter address and a length of the transmission period; transmitting request-to-send messages to respective stations in the plurality of stations; receiving clear-to-send messages from the respective stations in response to the request-to-send messages; and communicating data to the respective stations.
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26. A method for initiating and conducting communication in a wireless communication system, comprising:
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detecting one or more clear-to-send frames or request-to-send frames, the one or more frames indicate an address of an entity that holds a transmission opportunity and a duration of the transmission opportunity; setting a network allocation vector (NAV) based on the duration of the transmission opportunity; receiving a request-to-send frame that indicates an address of an entity that transmitted the request-to-send frame; determining if the address of the entity that transmitted the request-to-send frame is the same as the address of the entity that holds the transmission opportunity; and if the addresses are the same, transmitting a clear-to-send frame to the entity that transmitted the request-to-send frame. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A wireless communications apparatus, comprising:
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a memory that stores data relating to a NAV and an address of a transmitter; and a processor configured to detect one or more initial messages that indicate the address of the transmitter, one or more transmission classes to be utilized by the transmitter, and transmission intervals respectively corresponding to the transmission classes;
set the NAV based on the transmission intervals;
receive a subsequent request-to-send message;
compare a source address of the subsequent request-to-send message with the address of the transmitter; and
transmit a clear-to-send message to the transmitter upon determining that the source address of the subsequent request-to-send message is the same as the address of the transmitter. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An apparatus that facilitates determining intervals for communication in a wireless communication system, comprising:
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means for detecting one or more of a clear-to-send frame and a request-to-send frame, the one or more frames indicate a transmitter address and one or more transmission interval durations; means for receiving a request-to-send frame subsequent to the detecting one or more of a clear-to-send frame and a request-to-send frame; means for comparing an address of a station that transmitted the request-to-send frame with the transmitter address; and means for transmitting a clear-to-send frame to the station that transmitted the request-to-send frame if the address of the station that transmitted the request-to-send frame is the same as the transmitter address.
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49. A computer-readable medium, comprising:
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code for causing a computer to detect a message that establishes a transmission opportunity; code for causing a computer to receive a request message upon establishment of the transmission opportunity; code for causing a computer to determine whether the request message was transmitted by a holder of the transmission opportunity; and code for causing a computer to transmit a response message if the request message was transmitted by the holder of the transmission opportunity.
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50. An integrated circuit that executes computer-executable instructions for communicating in a wireless communication system during a transmission opportunity, the instructions comprising:
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detecting a message transmitted to one or more stations that specifies a transmitter address and a length of a transmission period; receiving a request-to-send message during the transmission period; if an address of a station that transmitted the request to-send-message is the same as the transmitter address;
transmitting a clear-to-send message in response to the request-to-send message; andreceiving data from the transmitter upon transmitting the clear-to-send message.
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Specification