Transmission method and communication system employing the method
AssigneeU.S. Philips Corporation
InventorTimothy J. Moulsley
Life of this patent
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Abstract
In a transmission system employing TDMA, the allocation of time segments for a particular transmission is synchronised with the creation of data packets for transmission over the channel. This reduces transmission delays. Either the timing of data packets or the division of the channel into segments for TDMA may be variable.
Claims15
A method of transmitting communication signals over a channel using time division multiple access sharing of the channel comprising:
- dividing a data sequence of each of said communication signals into data packets for transmission over the channel during respective subsequent time segments of the channel,
- allocating the time segments of the channel to respective ones of said data packets;
- and
- synchronizing the dividing of each of said communication signals into the data packets with the allocating of the time segments of the channel to the respective ones of said data packets.
A method of transmitting communication signals over a channel using time division multiple access sharing of the channel, comprising:
- dividing a data sequence of each of said communication signals into data packets for transmission over the channel during respective subsequent time segments of the channel;
- allocating the time segments of the channel to respective ones of said data packets;
- and
- synchronizing the dividing of each of said communication signals into the data packets with the allocating of the time segments of the channel to the respective ones of said data packets;
- wherein each of said data packets is transmitted using a block of successive time segments of the channel, such that the dividing of each of said communication signals into the data packets further comprises spreading of data from each of said data packets into data portions for respective time frames of the block, and timing of start of the block of time segments is synchronised with creation of the data portions.
A radio transmission system comprising:
- processing means for processing input data to produce streams of data packets,
- allocating means for allocating a series of time frames of a transmission channel of the transmission system to each of the streams of data packets,
- modulation means for modulating the transmission channel with a modulation signal representing the streams of data packets, and
- a system controller which receives a clock signal for governing operation of the processing means and of the allocating means, wherein production of the streams of data packets is synchronised by the system controller with the allocation of time frames to respective ones of the streams of data packets.
A transmission system comprising:
- a converter which converts input data into data portions;
- a modulator which modulates the data portions;
- and
- a controller connected to the converter and the modulator, said controller allocating time segments used for transmitting said data portions, wherein said controller further synchronizes the allocating of the time segments with the data portions so that each of the time segments is available shortly after generation of a respective one of said data portions for transmission thereby minimizing a delay between said each of the time segments and said respective one of said data portions.
Dependencies are inferred from the claim text.