초록 ▼

A technique for implementing a sublayer of a protocol suitable for data transfer in a multichannel environment where each channel is assumed to be prone to a significant bit error rate such as in a wireless communication system. The invention may be used to provide a high speed data transfer such as

A technique for implementing a sublayer of a protocol suitable for data transfer in a multichannel environment where each channel is assumed to be prone to a significant bit error rate such as in a wireless communication system. The invention may be used to provide a high speed data transfer such as at 128 kilobits per second or higher with a bit error rate of 10.sup.-6 or better using multiple channels. By keeping track of the number of frames received in error, the sender dynamically adjusts the subframe size for each channel to optimize the effective overall throughput. The subframes each carry preferably two types of sequence numbers including a position number related to an index into a larger frame to be transmitted as a single data entity. The second sequence number is related to the subchannel used so that the receiver can detect missing subframes. This then enables the receiver to submit retransmission requests for the missing pieces which can then be transmitted on the same channel or on another channel.

대표청구항 ▼

[ What is claimed is:] [14.]14. A data communication system comprising:a first multichannel transceiver to transmit data of a frame structure over one or more communication channels;a second multichannel transceiver to receive the data of a frame structure over the one or more communication channels

[ What is claimed is:] [14.]14. A data communication system comprising:a first multichannel transceiver to transmit data of a frame structure over one or more communication channels;a second multichannel transceiver to receive the data of a frame structure over the one or more communication channels;a first protocol converter connected to the first multichannel transceiver to divide a frame into subframes in an optimum subframe size; anda second protocol converter connected to the second multichannel transceiver to reassemble the subframes transmitted by the first multichannel transceiver and received by the second multichannel transceiver into the frame, to determine the number of subframes received in error at the second multichannel transceiver by counting the number of selective reject orders made to the first protocol converter, to determine the optimum subframe size for each communication channel based upon a determined number of subframes received in error which were attempted to be communicated over each channel, and to determine an error rate in each channel and an optimum number of subframes for each channel individually.