Method of using link adaptation and power control for streaming services in wireless networks
First Claim
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1. A system, comprising:
- a wireless router configured to cause data to be transmitted via an antenna, wherein the wireless router is configured to;
select a modulation and coding level for transmission of data packets, wherein selecting the modulation and coding level is based at least on a relationship between a predetermined error rate and a signal-to-interference-plus-noise ratio, wherein the signal-to-interference-plus-noise ratio is determined at least based on a signal path gain between a transmitter and a receiver, a maximum transmission power level, and a predicted interference power level for the transmission of the data packets; and
select a transmission power level for the transmission of the data packets based at least on the selected modulation and coding level;
wherein the wireless router is configured to cause transmission of the data packets in accordance with the selected modulation and coding level and with the selected transmission power level.
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Abstract
A method for improving the performance for a streaming service by link-adaptation and power-control in a wireless packet network such as an Enhanced General Packet Radio Services (EGPRS) cellular network is described. In particular, the effects of a combined link adaptation and power control scheme (referred to as an error-based scheme) for achieving a target error rate, which is non-zero but low enough so that limited retransmission and error concealment techniques are effective, is presented.
40 Citations
20 Claims
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1. A system, comprising:
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a wireless router configured to cause data to be transmitted via an antenna, wherein the wireless router is configured to; select a modulation and coding level for transmission of data packets, wherein selecting the modulation and coding level is based at least on a relationship between a predetermined error rate and a signal-to-interference-plus-noise ratio, wherein the signal-to-interference-plus-noise ratio is determined at least based on a signal path gain between a transmitter and a receiver, a maximum transmission power level, and a predicted interference power level for the transmission of the data packets; and select a transmission power level for the transmission of the data packets based at least on the selected modulation and coding level; wherein the wireless router is configured to cause transmission of the data packets in accordance with the selected modulation and coding level and with the selected transmission power level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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selecting a modulation and coding level for transmission of data packets from a network node, wherein selecting the modulation and coding level is based at least on a relationship between a predetermined error rate and a signal-to-interference-plus-noise ratio, wherein the signal-to-interference-plus-noise ratio is determined at least based on a signal path gain between a transmitter and a receiver, a maximum transmission power level, and a predicted interference power level for the transmission of the data packets; and selecting a transmission power level for the transmission of the data packets based at least on the selected modulation and coding level, wherein the network node is configured to cause transmission of the data packets in accordance with the selected modulation and coding level and with the selected transmission power level. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification