Methods and system for using multi-block bursts in half duplex subscriber unit transmissions
First Claim
1. A wireless communications system, comprising:
- a half-duplex subscriber unit for transmitting at least two successive blocks of data in a transmit burst; and
a base station for receiving the transmit burst and for determining for each block of data, whether or not the block of data was successfully received and for transmitting an indication based on said determining for each block of data,the subscriber unit receiving the indication associated with the last of the successive blocks of data transmitted and retransmitting the transmit burst if the last of the succesive blocks of data transmitted was not successfully received.
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Accused Products
Abstract
The invention provides a method and system for extending channel access in a wireless communications system employing half duplex subscriber units. The subscriber units transmit multi-block bursts to improve the burst throughput over half duplex subscriber units that transmit only single-block bursts. The number of blocks per burst is selected based on the code rate used and may be selected in a manner that also maximizes the system throughput. The subscriber unit includes a block processor for assembling the blocks of data with overhead based on the code rate, a burst formatter for combining the blocks and formatting the combination based on the code rate, and a process manager for selecting the number of blocks to be transmitted in each transmit burst.
26 Citations
19 Claims
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1. A wireless communications system, comprising:
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a half-duplex subscriber unit for transmitting at least two successive blocks of data in a transmit burst; and a base station for receiving the transmit burst and for determining for each block of data, whether or not the block of data was successfully received and for transmitting an indication based on said determining for each block of data, the subscriber unit receiving the indication associated with the last of the successive blocks of data transmitted and retransmitting the transmit burst if the last of the succesive blocks of data transmitted was not successfully received. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of extending channel access for half-duplex transmitters in a wireless communications system, comprising the steps of:
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transmitting at least two successive blocks of data in a single transmit burst; upon completion of said transmit burst, receiving a transmission from a base station indicating whether or not the last of the successive blocks of data was successfully received by the base station; and retransmitting said transmit burst if the last of the successive blocks of data was not successfully received. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A subscriber unit for use in a wireless communications system comprising:
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a block processing means for accepting an input of data frames and for forming a number of the data frames into a block of data; and a management means interfaced with said block processing means for initiating said block processing means to format least one block of data, said management means determining a number of blocks of data to be transmitted successively in a single transmit burst, said number of blocks being based upon a code rate at which the blocks of data are to be transmitted by the subscriber unit. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification