Method and system for wireless real-time collection of multichannel digital audio
First Claim
1. An isochronous signal collection method for streaming digital isochronous data from multiple, independent but coordinated, signal sources in a standard wireless local area network transmission system where bandwidth is reserved for both contention-based traffic and contention free traffic, the method comprising the steps of;
- organizing audio data formed by samples in audio frames and sending the audio frames to a receiver using speeded-up multicasting, within consecutive beacon intervals, andadjusting the contention free traffic of the beacon interval to an optimum value such that,enough bandwidth is reserved for the contention-free isochronous audio traffic,the system delay and buffering requirements are minimized, anda maximum bandwidth for the contention-based traffic is reserved, in addition to the contention-free isochronous audio traffic.
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Abstract
In this application is described a method and a system for collecting streaming multi channel digital isochronous data from multiple independent digital signal sources. The method is used for collecting streaming multi channel digital isochronous data, e.g. audio data, in a standard wireless local area network transmission system where bandwidth is reserved for both contention-based traffic and contention free traffic and the audio data (10) formed by samples (9) is organized in audio frames (174) and sent to receivers (6) using multicasting, within consecutive beacon intervals (137). In accordance with the invention the contention free traffic (138) of the beacon interval (137) is adjusted to an optimum value, and the length of the beacon interval (137) is adjusted such that a required amount of audio data (9) can be sent to the receivers (6) with minimum system delay.
39 Citations
22 Claims
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1. An isochronous signal collection method for streaming digital isochronous data from multiple, independent but coordinated, signal sources in a standard wireless local area network transmission system where bandwidth is reserved for both contention-based traffic and contention free traffic, the method comprising the steps of;
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organizing audio data formed by samples in audio frames and sending the audio frames to a receiver using speeded-up multicasting, within consecutive beacon intervals, and adjusting the contention free traffic of the beacon interval to an optimum value such that, enough bandwidth is reserved for the contention-free isochronous audio traffic, the system delay and buffering requirements are minimized, and a maximum bandwidth for the contention-based traffic is reserved, in addition to the contention-free isochronous audio traffic. - View Dependent Claims (2, 3, 4, 5, 13, 18, 20)
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6. An isochronous transmission method for collecting streaming multi channel digital isochronous data from multiple independent sources in a standard wireless local area network transmission system, where bandwidth is reserved for both contention-based traffic and contention free traffic, the method comprising the steps of;
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organizing audio data formed by samples is organized in to audio frames and sending the audio frames to a receiver using speeded-up multicasting, within consecutive beacon intervals, adjusting the contention free traffic of the beacon interval to an optimum value, and adjusting the length of the beacon interval such that a required amount of audio data can be sent to the receivers with minimum system delay.
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7. A wireless transmission system for collecting streaming digital serial audio data, in which system bandwidth is reserved for both contention traffic and contention free traffic, the system comprising;
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an organizing means for organizing the audio data formed by samples in audio data frames and control frames, a sending means for sending the frames to the receiver within consecutive beacon intervals, and an adjusting means for adjusting the contention free traffic of the beacon interval to an optimum value such that, enough bandwidth is reserved for the contention-free isochronous audio traffic, the system delay and buffering requirements are minimized, and a maximum bandwidth for the contention-based traffic is reserved, in addition to the contention-free isochronous audio traffic. - View Dependent Claims (8, 9, 10, 11)
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12. A wireless transmission system for streaming digital serial audio data, in which system bandwidth is reserved to both contention traffic and contention free traffic, the system comprising;
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an organizing means for organizing the audio data formed by samples in audio data frames and control frames, a sending means for sending the audio data frames and control frames to a receiver within consecutive beacon intervals, a first adjusting means for adjusting the contention free traffic of the beacon interval to an optimum value, and a second adjusting means for adjusting the length of the beacon interval such that a required amount of audio data can be sent to the receiver with minimum system delay.
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Specification