ENHANCED CHANNEL HOPPING SEQUENCE

• US 20160344443A1
• Filed: 12/29/2015
• Published: 11/24/2016
• Est. Priority Date: 05/22/2015
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: SCHMIDL, TIMOTHY, VIJAYASANKAR, KUMARAN, VEDANTHAM, RAMANUJA
• Granted Patent: US 10,594,360 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 1/7143 Arrangements for generation of hop patterns
• CPC Class Codes: H04B 1/715 Interference-related aspects
• CPC Class Codes: H04B 2001/7154 with means for preventing interference
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks

Abstract

A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.

Claims

1. An apparatus comprising:

a transceiver unit; and

a processing unit coupled to the transceiver and configured to,

transmit data packets via the transceiver unit using a frequency hopping sequence in a wireless communication network, wherein

the frequency hopping sequence comprises a plurality of transmission channel numbers, and

adjacent transmission channel numbers within a predetermined number of consecutive transmission channel numbers in the frequency hopping sequence are at least a predetermined distance apart.

2. The apparatus of claim 1, wherein the processing unit transmits data packets in the wireless communication network using a wireless communication protocol configured for using the frequency hopping sequence.

3. The apparatus of claim 2, wherein the wireless communication protocol is one or more of Bluetooth, IEEE 802.15, and Wi-Fi wireless communication protocol.

4. The apparatus of claim 2, wherein the predetermined number of consecutive channel numbers in the frequency hopping sequence is at least one of:

equal to a number of times data packets can be retransmitted according to the wireless communication protocol in the wireless communication system,

less than the number of times data packets can be retransmitted according to the wireless communication protocol in the wireless communication system, and

more than the number of times data packets can be retransmitted according to the wireless communication protocol in the wireless communication system.

5. The apparatus of claim 1, wherein the predetermined distance between the predetermined number of consecutive channel numbers in the frequency hopping sequence is at least more than an amount of maximum adjacent channel leakage.

6. The apparatus of claim 1, wherein predetermined number of consecutive transmission channel numbers in the frequency hopping sequence are apart from each other by a distance of at least two channels.

7. The apparatus of claim 1, wherein each one of the transmission channel numbers in the frequency hopping sequence corresponds to a transmission frequency band in the wireless communication network.

9. The apparatus of claim 7, wherein distance between adjacent transmission channel numbers within the predetermined number of consecutive channel numbers in the second frequency hopping sequence is at least equal to the predetermined threshold distance.

10. The apparatus of claim 7, wherein the processing unit transmits data packets in the wireless communication network using a wireless communication protocol configured for using the frequency hopping sequence.

11. The apparatus of claim 9, wherein the predetermined number of consecutive channel numbers is at least one of:

equal to a number of times data packets can be retransmitted according to the wireless communication protocol in the wireless communication system,

less than the number of times data packets can be retransmitted according to the wireless communication protocol in the wireless communication system, and

more than the number of times data packets can be retransmitted according to the wireless communication protocol in the wireless communication system.

12. The apparatus of claim 7, wherein the predetermined distance between the predetermined number of consecutive channel numbers in the frequency hopping sequence is at least more than an amount of maximum adjacent channel leakage.

13. The apparatus of claim 7, wherein predetermined number of consecutive transmission channel numbers in the frequency hopping sequence are apart from each other by a distance of at least two channels.

14. The apparatus of claim 7, wherein each one of the transmission channel numbers in the first and second frequency hopping sequences corresponds to a transmission frequency band in the wireless communication network.

20. The apparatus of claim 14, wherein each one of the transmission channel numbers in the first and second frequency hopping sequences correspond to a transmission frequency band in the wireless communication network.

8. An apparatus comprising:

a transceiver; and

a processing unit coupled to the transceiver and configured to,

generate a first frequency hopping sequence of transmission channel numbers for transmission in a wireless communication network,

determine whether a distance between adjacent transmission channel numbers within a predetermined number of consecutive channel numbers in the first frequency hopping sequence of transmission channel numbers is less than a predetermined threshold distance,

if the distance between adjacent transmission channel numbers within the predetermined number of consecutive channel numbers in the first frequency hopping sequence is less than the predetermined threshold distance, rearrange the first frequency hopping sequence of transmission channel numbers to generate a second frequency hopping sequence of transmission channel numbers, and

transmit data packets in the wireless communication system using the second frequency hopping sequence of transmission channel numbers.

15. A method comprising:

generating by a processing unit, a first frequency hopping sequence of transmission channel numbers for transmission in a wireless communication network;

determining by the processing unit whether a distance between adjacent transmission channel numbers within a predetermined number of consecutive channel numbers in the first frequency hopping sequence of transmission channel numbers is less than a predetermined threshold distance;

if distance between adjacent transmission channel numbers within the predetermined number of consecutive channel numbers in the first frequency hopping sequence of transmission channel numbers is not equal to at least the predetermined threshold distance, rearranging by the processing unit the first frequency hopping sequence of transmission channel numbers to generate a second frequency hopping sequence of transmission channel number; and

transmitting by the processing unit data packets in the wireless communication system via a transceiver unit using the second frequency hopping sequence of transmission channel numbers.

16. The method of claim 15, wherein distance between adjacent transmission channel numbers within the predetermined number of consecutive channel numbers in the second frequency hopping sequence is at least equal to the predetermined threshold distance

17. The method of claim 15, wherein the data packets are transmitted in the wireless communication network using a wireless communication protocol configured for using the frequency hopping sequence.

18. The method of claim 15, wherein the predetermined distance between the predetermined number of consecutive channel numbers in the frequency hopping sequence is at least more than an amount of maximum adjacent channel leakage.

19. The method of claim 15, wherein predetermined number of consecutive transmission channel numbers in the frequency hopping sequence are apart from each other by a distance of at least two channels.