PREAMBLE DESIGN ON A SHARED COMMUNICATION MEDIUM

• US 20170359263A1
• Filed: 06/06/2017
• Published: 12/14/2017
• Est. Priority Date: 06/10/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: BARGHI, Sanaz, NAGHSHVAR, Mohammad, PATEL, Chirag Sureshbhai, SADEK, Ahmed Kamel, KADOUS, Tamer Adel
• Granted Patent: US 10,516,618 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/2433 Allocation of priorities to traffic types
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0816 with collision avoidance

Abstract

Techniques for managing preamble transmission and processing on a shared communication medium are disclosed. An access point or an access terminal, for example, may generate a preamble for silencing communication on a communication medium with respect to an upcoming data transmission, configure the preamble to identify one or more target devices for the silencing, and transmit the preamble over the communication medium in advance of the data transmission. Conversely, the access point or the access terminal may receive a preamble (as a receiving device) over a communication medium, identify one or more target devices for silencing communication on the communication medium with respect to an upcoming data transmission based on the preamble, and selectively silence communication over the communication medium based on itself (as the receiving device) being among the one or more target devices.

Claims

1. A communication method, comprising:

generating a preamble for silencing communication on a communication medium with respect to an upcoming data transmission;

configuring the preamble to identify one or more target devices for the silencing; and

transmitting the preamble over the communication medium in advance of the upcoming data transmission.

2. The method of claim 1, wherein the preamble is configured to include one or more silencing criteria for identifying the one or more target devices.

3. The method of claim 2, wherein the one or more silencing criteria include a device identifier associated with at least one of the one or more target devices.

4. The method of claim 3, wherein the device identifier corresponds to a broadcast address or a group identifier associated with a plurality of the one or more target devices.

5. The method of claim 2, wherein the one or more silencing criteria include a protected device identity and an associated interference level tolerance threshold.

6. The method of claim 1, further comprising configuring the preamble to include a duration indicator that indicates a duration of the upcoming data transmission.

7. The method of claim 1, further comprising selecting the one or more target devices based on one or more signaling conditions for the upcoming data transmission.

8. The method of claim 7, wherein the one or more signaling conditions for the upcoming data transmission comprise one or more signaling conditions at a receiving device, received from the receiving device.

9. The method of claim 7, wherein the one or more signaling conditions comprise an interference above a threshold at a receiving device, a signal-to-interference-plus-noise ratio (SINR) drop below a threshold at the receiving device, or a combination thereof.

10. The method of claim 1, further comprising configuring the preamble to include a series of synchronization signals.

11. A communication apparatus, comprising:

at least one processor;

at least one memory coupled to the at least one processor, the at least one processor and the at least one memory being configured to;

generate a preamble for silencing communication on a communication medium with respect to an upcoming data transmission, and

configure the preamble to identify one or more target devices for the silencing; and

at least one transceiver configured to transmit the preamble over the communication medium in advance of the data transmission.

12. The apparatus of claim 11, wherein the at least one processor and the at least one memory are configured to configure the preamble to include one or more silencing criteria for identifying the one or more target devices.

13. The apparatus of claim 12, wherein the one or more silencing criteria include a device identifier associated with at least one of the one or more target devices.

14. The apparatus of claim 13, wherein the device identifier corresponds to a broadcast address or a group identifier associated with a plurality of the one or more target devices.

15. The apparatus of claim 12, wherein the one or more silencing criteria include a protected device identity and an associated interference level tolerance threshold.

16. The apparatus of claim 11, wherein the at least one processor and the at least one memory are further configured to configure the preamble to include a duration indicator that indicates a duration of the data transmission.

17. The apparatus of claim 11, wherein the at least one processor and the at least one memory are further configured to select the one or more target devices based on one or more signaling conditions for the data transmission.

18. The apparatus of claim 17, wherein the one or more signaling conditions comprise an interference above a threshold at a receiving device, a signal-to-interference-plus-noise ratio (SINR) drop below a threshold at the receiving device, or a combination thereof.

19. The apparatus of claim 11, wherein the at least one processor and the at least one memory are further configured to configure the preamble to include a series of synchronization signals.

20. The apparatus of claim 11, wherein the at least one transceiver is further configured to transmit or receive the data transmission over the communication medium following the transmission of the preamble.

21. A communication method, comprising:

receiving a preamble at a receiving device over a communication medium;

identifying one or more target devices for silencing communication on the communication medium with respect to an upcoming data transmission based on the preamble; and

selectively silencing communication over the communication medium based on the receiving device being among the one or more target devices.

22. The method of claim 21, wherein the identifying comprises evaluating one or more silencing criteria included in the preamble.

23. The method of claim 22, wherein the evaluating comprises comparing a device identifier included in the one or more silencing criteria against a device identifier associated with the receiving device.

24. The method of claim 22, wherein the evaluating comprises comparing a protected device identity and an associated interference level tolerance threshold included in the one or more silencing criteria against an uplink signaling history of the protected device stored at the receiving device.

25. The method of claim 21, wherein the receiving comprises synchronizing timing with the preamble based on a series of synchronization signals included in the preamble.

26. A communication apparatus, comprising:

at least one transceiver configured to receive a preamble at a receiving device over a communication medium;

at least one processor; and

at least one memory coupled to the at least one processor, the at least one processor and the at least one memory being configured to;

identify one or more target devices for silencing communication on the communication medium with respect to an upcoming data transmission based on the preamble, and

selectively silence communication over the communication medium based on the receiving device being among the one or more target devices.

27. The apparatus of claim 26, wherein the at least one processor and the at least one memory are configured to identify the one or more target devices by evaluating one or more silencing criteria included in the preamble.

28. The apparatus of claim 27, wherein the at least one processor and the at least one memory are configured compare a device identifier included in the one or more silencing criteria against a device identifier associated with the receiving device.

29. The apparatus of claim 27, wherein the at least one processor and the at least one memory are configured compare a protected device identity and an associated interference level tolerance threshold included in the one or more silencing criteria against an uplink signaling history of the protected device stored at the receiving device.

30. The apparatus of claim 26, wherein the at least one transceiver is further configured to synchronize timing with the preamble based on a series of synchronization signals included in the preamble.