Method and apparatus for reducing radio link supervision time in a high data rate system
First Claim
1. In a wireless communication system, a method for terminating the use of a communication channel comprising the steps of:
- decoding a received signal; and
terminating the use of the communication channel based on failure to successfully decode a configuration packet from said received signal within a predetermined supervision time.
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Accused Products
Abstract
A method of supervising on the forward link in a high data rate system is disclosed, wherein a base station transmits to an access terminal on a forward traffic channel only when the base station has data to send to the access terminal. The base station minimizes the worst-case period necessary to reclaim traffic channel resources following a release by periodically transmitting a configuration packet to its access terminals. The configuration packet indicates the allocation status of the traffic channels belonging to the base station. If an access terminal receives a configuration packet indicating the deallocation of one or all of its traffic channels, the access terminal immediately ceases its use of those traffic channels. If an access terminal fails to successfully decode a configuration packet for a predetermined supervision time, the access terminal releases its connection with all base stations and associated traffic channels.
56 Citations
42 Claims
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1. In a wireless communication system, a method for terminating the use of a communication channel comprising the steps of:
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decoding a received signal; and
terminating the use of the communication channel based on failure to successfully decode a configuration packet from said received signal within a predetermined supervision time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
successfully decoding said configuration packet from said received signal within said predetermined supervision time;
extracting channel allocation information from said configuration packet; and
terminating the use of the communication channel based on said channel allocation information.
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3. The method of claim 2 wherein said configuration packet is positioned within said received signal at time intervals having a predetermined duration.
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4. The method of claim 3 wherein said predetermined duration is approximately four hundred milliseconds.
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5. The method of claim 3 wherein said supervision time is a predetermined multiple of said predetermined duration.
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6. The method of claim 5 wherein said predetermined multiple is twelve.
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7. The method of claim 2 wherein said supervision time is approximately 4.8 milliseconds.
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8. The method of claim 2 wherein said step of extracting further comprises extracting an allocation indicator corresponding to one of a plurality of communication channels from said channel allocation information.
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9. The method of claim 2 wherein said step or extracting further comprises extracting one bit from a predetermined number of bits in a bit mask, wherein each bit of said bit mask corresponds to one of said predetermined number of communication channels, and wherein said one bit corresponds to the communication channel.
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10. The method of claim 9 wherein said predetermined number of bits is twenty-eight.
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11. The method of claim 9 wherein said predetermined number of bits is twenty-nine.
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12. The method of claim 2 further comprising the steps of:
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successfully decoding a release initiate message from said received signal within said predetermined supervision time; and
terminating the use of the communication channel based on said release initiate message.
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13. The method of claim 12 further comprising the step of sending a release message in response to said release initiate message.
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14. In a wireless communication system, a method for terminating the use of the communication channel comprising the steps of:
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transmitting a plurality of configuration packets, wherein each of said plurality of configuration packets comprises channel allocation information corresponding to the communication channel; and
terminating the use of the communication channel based on the expiration of a predetermined supervision time. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
decoding a release message corresponding to the communication channel; and
immediately releasing the communication channel.
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17. The method of claim 16 wherein said plurality of configuration packets are transmitted at time intervals having a predetermined duration.
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18. The method of claim 17 wherein said predetermined duration is approximately four hundred milliseconds.
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19. The method of claim 17 wherein said supervision time is a predetermined multiple of said predetermined duration.
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20. The method of claim 19 wherein said predetermined multiple is twelve.
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21. The method of claim 16 wherein said supervision time is approximately 4.8 milliseconds.
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22. The method of claim 16 wherein said step of extracting further comprises extracting an allocation indicator corresponding to at least one of a plurality of communication channels from said channel allocation information.
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23. The method of claim 16 wherein said channel allocation information comprises a bit mask having a predetermined number of bits, wherein each bit of said bit mask corresponds to one of said predetermined number of communication channels.
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24. The method of claim 23 wherein said predetermined number of bits is twenty-eight.
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25. The method of claim 23 wherein said predetermined number of bits is twenty-nine.
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26. A wireless access terminal apparatus comprising:
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a decoder for decoding a received demodulated signal; and
a control processor for terminating the use of a communication channel based on failure of said decoder to successfully decode a configuration packet from the received demodulated signal within a predetermined supervision time. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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33. A wireless network apparatus comprising:
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a transceiver for transmitting a forward link signal to one or more access terminals, and for receiving one or more reverse link signals from the one or more access terminals; and
a control processor configured to generate a plurality of configuration packets, wherein each configuration packet comprises channel allocation information corresponding to a plurality of communication channels, and wherein said plurality of configuration packets are transmitted through said transceiver, and wherein said control processor is further configured to terminate the use of a first communication channel of said plurality of communication channels based on the expiration of a predetermined supervision time after the transmitting of a first of the plurality of configuration packets. - View Dependent Claims (34, 35, 36, 37, 38)
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39. A wireless access terminal apparatus comprising:
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means for decoding a received signal; and
means for terminating the use of a communication channel based on failure to successfully decode a configuration packet from said received signal within a predetermined supervision time. - View Dependent Claims (40)
means for successfully decoding said configuration packet from said received signal within said predetermined supervision time; and
means for extracting channel allocation information from said configuration packet;
wherein said means for terminating is further configured to terminate the use of the communication channel based on said channel allocation information.
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41. A wireless network apparatus comprising:
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means for transmitting a plurality of configuration packets, wherein each of said plurality of configuration packets comprises channel allocation information corresponding to the communication channel; and
means for terminating the use of the communication channel based on the expiration of a predetermined supervision time. - View Dependent Claims (42)
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Specification