Adaptive data rate for a bilateral hearing prosthesis system

• US 9,020,169 B2
• Filed: 05/15/2012
• Issued: 04/28/2015
• Est. Priority Date: 05/15/2012
• Status: Active Grant

• Current Assignee: Cochlear Limited
• Original Assignee: Cochlear Limited
• Inventors: Meskens, Werner
• Primary Examiner(s): Matar, Ahmad F
• Assistant Examiner(s): Diaz, Sabrina
• Application Number:
  US13/471,897
• Publication Number:
  US 20130308804A1
• Time in Patent Office: 1,078 Days
• Field of Search: 381/23.1, 381 56- 58, 381/60, 381312-331
• US Class Current: 381/315
• CPC Class Codes: H04R 25/552 Binaural

Abstract

Methods, systems, and devices for determining a data rate for a communication between bilateral hearing prostheses are disclosed. A first hearing prosthesis transmits a first signal to a second hearing prosthesis during a first transmission interval. The second hearing prosthesis transmits a second signal to the first hearing prosthesis during a second transmission interval. The first signal includes an indication of a data rate for the second signal.

Claims

1. A method comprising:

determining, by a first hearing prosthesis prior to a first transmission interval, a data rate to be used by the first hearing prosthesis and a second hearing prosthesis during a second transmission interval, wherein the determined data rate is based on an acoustic environment in which the first hearing prosthesis and the second hearing prosthesis operate, and wherein the first hearing prosthesis and the second hearing prosthesis are bilateral hearing prostheses;

based on the determined data rate, determining by the first hearing prosthesis at least one of (i) a payload length for each data packet transmitted during the second transmission interval or (ii) a length of the second transmission interval;

during the first transmission interval, transmitting from the first hearing prosthesis to the second hearing prosthesis a first signal that includes an indication of the determined data rate, wherein the indication of the determined data rate comprises an indication of at least one of (i) the payload length for each data packet transmitted during the second transmission interval or (ii) the length of the second transmission interval; and

transmitting a second signal from the second hearing prosthesis to the first hearing prosthesis during the second transmission interval, wherein the second hearing prosthesis transmits the second signal at the determined data rate for the second transmission interval.

2. The method of claim 1, wherein the first signal and the second signal each include at least one data packet.

3. The method of claim 2, wherein the first signal includes a first data packet having a first payload, wherein the indication of the determined data rate is included in the first payload.

4. The method of claim 3, wherein the first payload includes a symbol rate for transmissions sent from the second hearing prosthesis, wherein the symbol rate is based on the determined data rate.

5. The method of claim 1, further comprising:

receiving, by the first hearing prosthesis, a third signal from a remote device during a first monitoring interval; and

receiving, by the second hearing prosthesis, a fourth signal from the remote device during a second monitoring interval, wherein the first transmission interval and the second transmission interval are interleaved with the first monitoring interval and the second monitoring interval.

6. The method of claim 5, wherein a symbol rate of the first signal and the second signal is less than a symbol rate of the third signal and the fourth signal.

7. The method of claim 1, wherein the first signal and the second signal include information for synchronizing a setting of a parameter used by the first hearing prosthesis and the second hearing prosthesis to process a sound.

8. A system comprising:

a first hearing prosthesis;

a second hearing prosthesis, wherein the first hearing prosthesis and the second hearing prosthesis are bilateral hearing prostheses; and

a remote device,

wherein a first set of communications between the first hearing prosthesis and the second hearing prosthesis is interleaved with (i) a second set of communications between the remote device and the first hearing prosthesis and (ii) a third set of communications between the remote device and the second hearing prosthesis, and

wherein the first hearing prosthesis determines, based on an acoustic environment in which the bilateral hearing prosthesis operate, (i) a data rate used by the bilateral prostheses for the first set of communications and, based on the determined data rate, (ii) at least one of (a) a payload length of each data packet included in the first set of communications or (b) an amount of time between communications in the first set of communications.

9. The system of claim 8, wherein a symbol rate of the first set of communications is less than a symbol rate of the second set of communications and the third set of communications.

10. The system of claim 8, wherein the first set of communications includes:

a first interval in which the first hearing prosthesis sends a first signal to the second hearing prosthesis; and

a second interval in which the second hearing prosthesis sends a second signal to the first hearing prosthesis, wherein the first signal and the second signal are digitally modulated signals.

11. The system of claim 10, wherein M frequencies are available for transmitting the first set of communications, the second set of communications, and the third set of communications, wherein N frequencies of the M frequencies are reserved for the first set of communications, and wherein M and N are integers.

12. The system of claim 10, wherein the first hearing prosthesis is configured to select a transmit frequency for the second signal from the N frequencies reserved for the first set of communications, wherein the first hearing prosthesis includes an indication of the transmit frequency in the first signal.

13. The system of claim 8, wherein the first hearing prosthesis transmits to the second hearing prosthesis a first communication included in the first set of communications, the first communication comprising information indicative of at least one of (i) the payload length of each data packet included in the first set of communications or (b) the amount of time between the communications in the first set of communications.

14. A hearing prosthesis comprising a transceiver and one or more processor configured to:

identify an operating mode of the hearing prosthesis based on an acoustic environment in which the hearing prosthesis and an additional hearing prosthesis operate;

determine, based on the operating mode, a data rate for a next communication cycle, wherein the data rate is used by the hearing prosthesis and the additional hearing prosthesis to transmit signals during the next communication cycle;

based on the determined data rate, determine at least one of (i) a length of each transmission interval during the next communication cycle or (ii) an amount of time between each transmission interval during the next communication cycle; and

transmit a signal to the additional hearing prosthesis via the transceiver that includes information indicative of the determined data rate for the next communication cycle, wherein the information indicative of the determined data rate comprises information indicative of at least one of (i) a length of each transmission interval during the next communication cycle or (ii) an amount of time between each transmission interval during the next communication cycle.

15. The hearing prosthesis of claim 14, wherein the one or more processors are further configured to include the information indicative of the determined data rate in a payload of a first data packet included in the signal.

16. The hearing prosthesis of claim 15, wherein the one or more processors are further configured to send the first data packet to the additional hearing prosthesis before any additional data packets during the transmission interval.

17. The hearing prosthesis of claim 15, wherein the one or more processors are further configured to determine, based on the determined data rate, a payload length of one or more data packets for the next communication cycle.

18. The hearing prosthesis of claim 17, wherein the information indicative of the determined data rate for the next communication cycle further includes the length of the payload of the one or more data packets.

19. The hearing prosthesis of claim 14, further comprising an audio transducer configured to receive a sound and generate a sound signal that includes information indicative of the sound, wherein the one or more processors are further configured to:

receive the sound signal from the audio transducer; and

determine the acoustic environment based on at least the sound signal.