Abstract: A system and method for minimizing Bluetooth packet retransmission is disclosed. The Bluetooth device creates a channel map as is currently done. However, the Bluetooth device also establishes a “clean channel” threshold. In relatively low noise environments, all of the channels in the channel map may also be considered clean channels, such that all of the channels in the channel map are used for Bluetooth packet transmissions. However, in noisy environments, some of the channels in the channel map may not be denoted as “clean channels”. In this situation, the Bluetooth device may transmit NULL or POLL packets when these channels are scheduled to be used and transmit the actual data packet in the next scheduled slot on a clearer channel.

Abstract: A system and method for reducing packet error rates for L2CAP PDUs with large payloads is disclosed. The Bluetooth device fragments the large payload in several packets in accordance with well known algorithms. However, prior to transmission, the Bluetooth device redistributes the payload among these packets to reduce the maximum payload that is transmitted in one packet. In one embodiment, the Optimum Slot Utilization algorithm is used to determine the number and types of packets to be used, as well as the payloads in each packet. Once this is determined, the Bluetooth device then redistributes the payload across these packets to reduce the size of the largest payload that is transmitted in any packet, while still maintaining the same number of packets.

Abstract: Systems and methods for reducing power consumption by using adaptive transmit power during sniff intervals are disclosed. The central device transmits the first packet of the sniff interval using the previously negotiated transmit power. After the central device receives a response from the peripheral device, the central device uses a lower transmit power for subsequent POLL packets during that sniff interval. This scheme may reduce the power consumption of the central device significantly, especially when a large number of packets are transmitted during each sniff interval.

Abstract: A system and method for minimizing Bluetooth packet retransmission is disclosed. The Bluetooth device creates a channel map as is currently done. However, the Bluetooth device also establishes a “clean channel” threshold. In relatively low noise environments, all of the channels in the channel map may also be considered clean channels, such that all of the channels in the channel map are used for Bluetooth packet transmissions. However, in noisy environments, some of the channels in the channel map may not be denoted as “clean channels”. In this situation, the Bluetooth device may transmit NULL or POLL packets when these channels are scheduled to be used and transmit the actual data packet in the next scheduled slot on a clearer channel.

Abstract: In one aspect, a method includes: transmitting, from a transmitter, a first packet to a device wirelessly coupled to the transmitter; in response to not receiving a response regarding the first packet from the device, retransmitting the first packet until a response is received; transmitting a plurality of second packets to the device, the second packets having a smaller width than the first packet; identifying a periodic polling interval at which the device communicates with another device; and adjusting a transmit clock slot and transmitting one or more third packets to the device according to the adjusted transmit clock slot.