Method and system for channel time allocation and access control in wireless network for high-definition video transmission
First Claim
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1. A method of communicating information over one or more wireless channels in a network, comprising:
- controlling channel access among wireless stations by dividing channel time into one or more superframes, including schedules of channel time blocks (CTBs) for a high-rate channel and a low-rate channel;
scheduling each superframe for communicating information, wherein scheduling includes creating one or more schedules each comprising CTBs including multiple inconsecutive reserved CTBs for communication of packets of information over one or more of the high-rate channel and one or more of the low-rate channel, wherein the low-rate channel and the high-rate channel cannot be used at the same time, and beacons and Acknowledge (ACK) packets are transmitted over the low-rate channel in between transmission of the information over the high-rate channel;
and transmitting packets of information over the one or more of the high-rate channel and the low-rate channel during the reserved CTBs according to each schedule, wherein the high-rate channel transmission is single direction unicast and low-rate channel transmission is bi-directional, and the information comprises high definition (HD) uncompressed video information.
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Abstract
A channel time allocation and access control process for communication in wireless networks is provided. The channel time is divided into channel time blocks (CTBs), including one or more reserved CTBs and one or more unreserved CTBs. Schedules are implemented, wherein one or more periodic, equal-sized CTBs are reserved for isochronous streams. Dynamic CTB extension and truncation allow flexible channel time allocation.
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Citations
66 Claims
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1. A method of communicating information over one or more wireless channels in a network, comprising:
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controlling channel access among wireless stations by dividing channel time into one or more superframes, including schedules of channel time blocks (CTBs) for a high-rate channel and a low-rate channel; scheduling each superframe for communicating information, wherein scheduling includes creating one or more schedules each comprising CTBs including multiple inconsecutive reserved CTBs for communication of packets of information over one or more of the high-rate channel and one or more of the low-rate channel, wherein the low-rate channel and the high-rate channel cannot be used at the same time, and beacons and Acknowledge (ACK) packets are transmitted over the low-rate channel in between transmission of the information over the high-rate channel; and transmitting packets of information over the one or more of the high-rate channel and the low-rate channel during the reserved CTBs according to each schedule, wherein the high-rate channel transmission is single direction unicast and low-rate channel transmission is bi-directional, and the information comprises high definition (HD) uncompressed video information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A coordinator for managing communication of information over one or more wireless channels in a network, comprising:
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a controller configured for receiving a bandwidth request from a source wireless station for transmission of information, and determining channel bandwidth availability; and a scheduler configured for allocating available channel bandwidth by dividing channel time into one or more superframes including schedules of channel time blocks (CTBs) for a high-rate channel and a low-rate channel, CTBs including multiple inconsecutive reserved CTBs for communication of packets of information over the one or more wireless channels, wherein the low-rate channel and the high-rate channel cannot be used at the same time, and beacons and Acknowledge (ACK) packets are transmitted over the low-rate channel in between transmission of the information over the high-rate channel, wherein the high-rate channel transmission is single direction unicast and low-rate channel transmission is bi-directional, and the information comprises high definition (HD) uncompressed video. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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58. A wireless station for communication of information over one or more wireless channels in a network, comprising:
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a controller module configured for requesting reservation of available channel bandwidth from a coordinator for transmission of information; and a communication module configured for communication of packets of information over the one or more channels according to one or more schedules provided by the coordinator, wherein each schedule allocates available channel bandwidth by dividing channel time into one or more superframes including schedules for channel time blocks (CTBs) for a high-rate channel and a low-rate channel, each superframe including CTBs that include multiple inconsecutive reserved CTBs for communication of packets of information over the one or more channels, wherein the low-rate channel and the high-rate channel cannot be used at the same time, and beacons and Acknowledge (ACK) packets are transmitted over the low-rate channel in between transmission of the information over the high-rate channel, wherein high-rate channel transmission is single direction unicast and low-rate transmission is bi-directional, and the information comprises high definition (HD) uncompressed video transmitted over a 60 GHz frequency band. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66)
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Specification