Rate indication and link adaptation for long range wireless networks

摘要

A method of fast link adaptation for Bluetooth long-range wireless networks is provided. A novel rate indication (RI) field is incorporated in a data packet to enable auto detection of rate adaptation at the receiver side. The data packet comprises a preamble, a first packet portion including the RI field, and a second packet portion including the PDU. The first packet portion is encoded with a first rate while the second packet portion is encoded with a second rate indicated by the RI field. The transmitting device raise/lower the encoding rate when the link quality is good/poor. The receiving device can provide recommended rate or link quality feedback information via an LMP message to help the transmitting device making rate adaptation decision. The transmitter can unilaterally decide the data rate for the second packet portion without receiver recommendation.

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 wireless communication network, wherein the data packet comprises a preamble, a first packet portion, and a second packet portion; encoding the first packet portion in accordance with a first rate, wherein the first packet portion comprises an access address field and a rate indication field, wherein the access address field and the rate indication field are convolutional forward error correction (FEC) encoded with a predetermined rate; encoding the second packet portion in accordance with a second rate based on a value of the rate indication field; and transmitting the data packet to the receiving device in the wireless communications network.