Wireless data communication method, computer peripheral device and receiver device
Wireless data communication method, for communication between a computer peripheral device and a receiver device including transmitting a datastream from a computer peripheral device to a receiver device, with a wireless communication protocol which may operate with a first frequency band and a second frequency band. Each of the bands may be divided into a plurality of sub-bands, which may be further divided into frequency channels. During a first time slot, the operation frequency channel may be a first operation frequency channel selected according to a first frequency hopping sequence from the frequency channels of one sub-band of the first frequency band. During a second time slot, the operation frequency channel may be selected according to a second frequency hopping sequence from the frequency channels of one sub-band of the plurality of sub-bands of the second frequency band. Adjacent frequency channels of any of the frequency hopping sequences may be of different sub-bands. A device implementing the method is also envisaged.
1. A computer peripheral device ( 100 ) comprising
computer peripheral function circuitry ( 101 ) to provide one or more predefined peripheral functions to a computer ( 10 );
a human interface to receive and/or to present data from or to a user;
an encoder ( 110 ) to encode a datastream using the data;
a communication circuitry configured to implement a wireless data communication with a receiver device ( 200 ) to couple to the computer ( 10 ), the communication circuitry further configured to:
transmit the datastream in accordance with a wireless communication protocol, wherein the communication protocol operates with a first frequency band (B 1 ) and a second frequency band (B 2 ), which are non-overlapping, one being located in a lower frequency range than the other, wherein each of the first and second frequency bands (B 1 , B 2 ) is divided into a plurality of sub-bands, and wherein each sub-band of the plurality of sub-bands is further divided into a plurality of frequency channels,
wherein the communication circuitry is configured to transmit data of the datastream via an operation frequency channel ( 14 ) during a first time slot (TS 1 ) and a second time slot (TS 2 ), wherein the first time slot (TS 1 ) and the second time slot (TS 2 ) have fixed durations and alternate in a periodic sequence; and
a first frequency channel selector ( 140 ) configured to:
select a first operation frequency channel ( 1 CHn) according to a first frequency hopping sequence (S 1 ) from one frequency channel of the plurality of frequency channels of one sub-band of the plurality of sub-bands ( 1 SB) of the first frequency band (B 1 ),
select the first operation frequency channel ( 1 CHn) as a next first operation frequency channel ( 1 CHnp 1 ) of the first frequency hopping sequence (S 1 ) due to a first error condition becoming satisfied,
select a second operation frequency channel ( 2 CHn) according to a second frequency hopping sequence (S 2 ) from one frequency channel of the plurality of frequency channels of one sub-band of the plurality of sub-bands ( 2 SB) of the second frequency band (B 2 ), and
select the second operation frequency channel ( 2 CHn) as a next second operation frequency channel ( 2 CHnp 1 ) due to a second error condition becoming satisfied,
wherein the operation frequency channel ( 14 ) is the first operation frequency channel ( 1 CHn) during the first time slot (TS 1 ) and the second operation frequency channel ( 2 CHn) during the second time slot (TS 2 ), and
wherein any two adjacent frequency channels of the first frequency hopping sequence (S 1 ) or any two adjacent frequency channels of the second frequency hopping sequence (S 2 ) are of different sub-bands.
2. The computer peripheral device ( 100 ) of claim 1 , further comprising:
a first transmitter (Tx 1 ) configured to transmit first data (UL 1 ) of the datastream over the operation frequency channel ( 14 ); and
a first receiver (Rx 1 ) configured to receive second data (DL 1 ).
3. The computer peripheral device ( 100 ) of claim 2 , further comprising a comparator configured to carry out a determination whether the second data (DL 1 ) comprises a confirmation (ACK 1 , ACK 2 ) of receipt of the first data (UL 1 ) by the receiver device ( 200 ) for the respective time slot.
4. The computer peripheral device ( 100 ) of claim 3 , wherein the first error condition becomes satisfied when the determination fails to confirm the receipt of the first data (UL 1 ) for the first operation frequency channel ( 1 CHn), and a count of determination failures for said frequency channel exceeds a first pre-determined threshold.
5. The computer peripheral device ( 100 ) of claim 3 , wherein the second error condition becomes satisfied when the determination fails to confirm the receipt of the first data (UL 1 ) for the second operation frequency channel ( 2 CHn), and a count of determination failures for said frequency channel exceeds a second pre-determined threshold.
6. The computer peripheral device ( 100 ) of claim 1 , wherein each of the first time slot (TS 1 ) and the second time slot (TS 2 ) has a same fixed duration selected from 10 microseconds to 10 milliseconds.
7. The computer peripheral device ( 100 ) of claim 1 , further comprising a hopping sequence generator ( 250 ) configured to generate the first frequency hopping sequence (S 1 ) and the second frequency hopping sequence (S 2 ).
8. The computer peripheral device ( 100 ) of claim 7 , wherein the hopping sequence generator ( 250 ) is configured to dynamically update the first frequency hopping sequence (S 1 ) and the second frequency hopping sequence (S 2 ).
9. The computer peripheral device ( 100 ) of claim 7 , wherein the hopping sequence generator ( 250 ) is configured to transmit the first frequency hopping sequence (S 1 ) and the second frequency hopping sequence (S 2 ) over the operation frequency channel to the receiver device ( 200 ).
10. The computer peripheral device ( 100 ) of claim 1 , wherein the first frequency channel selector ( 140 ) is configured to store or update each of the first frequency hopping sequence (S 1 ) and the second frequency hopping sequence (S 2 ) with a new first frequency hopping sequence (S 1 ) and a new second frequency hopping sequence (S 2 ) received by a first receiver (Rx 1 ) from the receiver device ( 200 ).
11. The computer peripheral device ( 100 ) of claim 1 being a human interface device such as a computer mouse ( 101 ) or a keyboard.
12. A receiver device ( 200 ) being coupleable to a computer ( 10 ), and including a communication circuitry configured to implement a wireless data communication with the computer peripheral device ( 100 ) according to claim 1 .
13. The receiver device ( 200 ) of claim 12 , further comprising a determination circuit to carry out a determination whether first data (UL 1 ) was received and transmit a confirmation (ACK 1 , ACK 2 ) of receipt of the first data (UL 1 ) to the computer peripheral device ( 100 ).
14. A wireless data communication method ( 300 ), for communication between a computer peripheral device ( 100 ) and a receiver device ( 200 ), comprising:
transmitting a datastream ( 350 ) from a computer peripheral device ( 100 ) to a receiver device ( 200 ), in accordance with a wireless communication protocol,
wherein the communication protocol operates with a first frequency band (B 1 ) and a second frequency band (B 2 ), which are non-overlapping, one being located in a lower frequency range than the other, wherein each of the first and second frequency bands (B 1 , B 2 ) is divided into a plurality of sub-bands, and wherein each sub-band of the plurality of sub-bands is further divided into a plurality of frequency channels,
wherein transmitting the datastream in accordance with the wireless communication protocol comprises
transmitting data of the datastream via an operation frequency channel during a first time slot (TS 1 ) and a second time slot (TS 2 ), wherein the first time slot (TS 1 ) and the second time slot (TS 2 ) have fixed durations and alternate in a periodic sequence;
wherein, during the first time slot (TS 1 ), the operation frequency channel is a first operation frequency channel ( 1 CHn) selected according to a first frequency hopping sequence (S 1 ) from one frequency channel of the plurality of frequency channels of one sub-band of the plurality of sub-bands ( 1 SB) of the first frequency band (B 1 ),
wherein the first operation frequency channel ( 1 CHn) is selected as a next first operation frequency channel ( 1 CHnp 1 ) of the first frequency hopping sequence (S 1 ) due to a first error condition becoming satisfied,
wherein during the second time slot (TS 2 ), the operation frequency channel is a second operation frequency channel ( 2 CHn) selected according to a second frequency hopping sequence (S 2 ) from one frequency channel of the plurality of frequency channels of one sub-band of the plurality of sub-bands ( 2 SB) of the second frequency band (B 2 ),
wherein the second operation frequency channel ( 2 CH) is selected as a next second operation frequency channel ( 2 CHnp 1 ) due to a second error condition becoming satisfied,
wherein any two adjacent frequency channels of the first frequency hopping sequence (S 1 ) or any two adjacent frequency channels of the second frequency hopping sequence (S 2 ) are of different sub-bands.
15. The wireless data communication method ( 300 ) of claim 14 , wherein each of the first time slot (TS 1 ) and the second time slot (TS 2 ) has a fixed duration selected from 10 microseconds to 10 milliseconds.
16. The wireless data communication method ( 300 ) of claim 14 , wherein, when a count of failed transmissions has exceeded a pre-determined threshold for the operation frequency channel, the first error condition has become satisfied.
17. The wireless data communication method ( 300 ) of claim 16 , wherein the count of failed transmissions is carried out concurrently by the computer peripheral device ( 100 ) and by the receiver device ( 200 ).
18. The wireless data communication method ( 300 ) of claim 14 , wherein selecting the first operation frequency channel ( 1 CHn) as a next first operation frequency channel ( 1 CHnp 1 ) or selecting the second operation frequency channel ( 2 CHn) as a next second operation frequency channel ( 2 CHnp 1 ) is carried out by a first frequency channel selector ( 140 ) comprised by the computer peripheral device ( 100 ), and concurrently, by a second frequency channel selector ( 240 ) comprised by the receiver device ( 200 ).
19. The wireless data communication method ( 300 ) of claim 14 , wherein the peripheral device ( 100 ) is human interface device such as a computer mouse ( 101 ) or a keyboard.
20. The wireless data communication method ( 300 ) of claim 14 , wherein the receiver device ( 200 ) is a USB dongle ( 201 ).