Rate Indication and Link Adaptation for Variable Data Rates in Long Range Wireless Networks

摘要

A method of fast link adaptation for Bluetooth long-range wireless networks is provided. A data packet comprises a preamble, a first packet portion including a rate indication field, and a second packet portion including a PDU. The first packet portion is encoded using a first modulation and coding scheme with a first rate while the second packet portion is encoded using a second modulation and coding scheme with a second rate indicated by the RI field. A transmitter thus can use different MCS options to support variable data rates by adapting to channel conditions, and then uses the novel RI field to indicate the data rate to a receiver dynamically. As a result, fast link adaptation can be achieved for different applications with different rate requirements, to provide higher data rate, reduce connection time, lower power consumption, and improve link quality.

主权项

1. A method comprising:
indicating and adapting a data rate associated with a data packet to be transmitted from a transmitting device to a receiving device in a Bluetooth long-range wireless network, wherein the data packet comprises a preamble, a first packet portion, and a second packet portion; encoding the first packet portion using a first modulation and coding scheme (MCS) in accordance with a first data rate, wherein the first packet portion comprises a rate indication field; encoding the second packet portion using a second modulation and coding scheme (MCS) in accordance with a second data rate based on a value of the rate indication field; and transmitting the data packet to the receiving device in the wireless network.