Techniques for adaptively enabling synchronization of nodes using a listen before talk load-based equipment protocol

Patent metadata

Field	Value
Publication number	US-2016105858-A1
Application number	US-201514875542-A
Country	US
Kind code	A1
Filing date	Oct 5, 2015
Priority date	Oct 14, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

Techniques are described for wireless communication. A method for wireless communication may include identifying interference at a first node operating in a shared radio frequency spectrum band. The interference may be caused by a second node operating in the shared radio frequency spectrum band. The second node may operate asynchronously to the first node in the shared radio frequency spectrum band. The method may also include adaptively enabling, based at least in part on the identified interference, a synchronization of the first node with at least a third node in the shared radio frequency spectrum band.

First claim

What is claimed is:

1 . A method for wireless communications, comprising:
identifying interference at a first node operating in a shared radio frequency spectrum band, the interference caused by a second node operating in the shared radio frequency spectrum band, the second node operating asynchronously to the first node in the shared radio frequency spectrum band; and adaptively enabling, based at least in part on the identified interference, a synchronization of the first node with at least a third node in the shared radio frequency spectrum band.

2 . The method of claim 1 , further comprising:
enabling the synchronization of the first node with at least the third node when the identified interference fails to satisfy a threshold; and disabling the synchronization of the first node with at least the third node when the identified interference satisfies the threshold.

3 . The method of claim 1 , further comprising:
reporting the identified interference to a central node in communication with at least the first node and the third node; wherein the adaptive enabling is based at least in part on a command received from the central node.

4 . The method of claim 1 , wherein a central node is in communication with at least the first node and the third node, and wherein the identifying and the adaptive enabling are performed by the central node.

5 . The method of claim 4 , wherein identifying the interference at the first node comprises:
receiving an interference indication from the first node.

6 . The method of claim 4 , wherein the adaptive enabling comprises:
transmitting a command to the first node.

7 . The method of claim 1 , wherein identifying the interference at the first node comprises receiving an interference indication from the first node at the third node, and wherein the identifying and the adaptive enabling are performed by the third node.

8 . The method of claim 1 , wherein the synchronization of the first node with at least the third node comprises a synchronization of extended clear channel assessments (ECCAs) performed by the first node and the third node when contending for access to the shared radio frequency spectrum band.

9 . The method of claim 1 , wherein the first node comprises a first base station and the second node comprises a second base station or a Wi-Fi node.

10 . The method of claim 9 , wherein the third node comprises a second base station, and wherein the first base station and the second base station are members of a same operator deployment.

11 . The method of claim 10 , wherein the first base station and the second base station are members of different and unsynchronized operator deployments.

12 . The method of claim 10 , wherein the first base station and the second base station are unsynchronized base stations of a same operator deployment.

13 . The method of claim 1 , wherein the first node and the second node operate in the shared radio frequency spectrum band using different radio access technologies or a same radio access technology.

14 . An apparatus for wireless communications, comprising:
means for identifying interference at a first node operating in a shared radio frequency spectrum band, the interference caused by a second node operating in the shared radio frequency spectrum band, the second node operating asynchronously to the first node in the shared radio frequency spectrum band; and means for adaptively enabling, based at least in part on the identified interference, a synchronization of the first node with at least a third node in the shared radio frequency spectrum band.

15 . The apparatus of claim 14 , further comprising:
means for enabling the synchronization of the first node with at least the third node when the identified interference fails to satisfy a threshold; and means for disabling the synchronization of the first node with at least the third node when the identified interference satisfies the threshold.

16 . The apparatus of claim 14 , further comprising:
means for reporting the identified interference to a central node in communication with at least the first node and the third node; wherein the adaptive enabling is based at least in part on a command received from the central node.

17 . The apparatus of claim 14 , wherein a central node is in communication with at least the first node and the third node, and wherein the central node comprises the means for identifying and the means for adaptively enabling.

18 . The apparatus of claim 17 , wherein the means for identifying interference at the first node comprises means for receiving an interference indication from the first node.

19 . The apparatus of claim 17 , wherein the means for adaptively enabling comprises:
means for transmitting a command to the first node.

20 . The apparatus of claim 14 , wherein the means for identifying interference at the first node comprises means for receiving an interference indication from the first node at the third node, and wherein the third node comprises the means for identifying and the means for adaptively enabling.

21 . The apparatus of claim 14 , wherein the synchronization of the first node with at least the third node comprises a synchronization of extended clear channel assessments (ECCAs) performed by the first node and the third node when contending for access to the shared radio frequency spectrum band.

22 . An apparatus for wireless communications, comprising:
a processor; and memory coupled to the processor, wherein the processor is configured to: identify interference at a first node operating in a shared radio frequency spectrum band, the interference caused by a second node operating in the shared radio frequency spectrum band, the second node operating asynchronously to the first node in the shared radio frequency spectrum band; and adaptively enable, based at least in part on the identified interference, a synchronization of the first node with at least a third node in the shared radio frequency spectrum band.

23 . The apparatus of claim 22 , wherein the instructions are executable by the processor to:
enable the synchronization of the first node with at least the third node when the identified interference fails to satisfy a threshold; and disable the synchronization of the first node with at least the third node when the identified interference satisfies the threshold.

24 . The apparatus of claim 22 , wherein the instructions are executable by the processor to:
report the identified interference to a central node in communication with at least the first node and the third node; wherein the adaptive enabling is based at least in part on a command received from the central node.

25 . The apparatus of claim 22 , wherein a central node is in communication with at least the first node and the third node, wherein the apparatus includes the central node, and wherein the processor is included in the central node.

26 . The apparatus of claim 25 , wherein the instructions executable by the processor to identify interference at the first node include instructions executable by the processor to:
receive an interference indication from the first node.

27 . The apparatus of claim 25 , wherein the instructions executable by the processor to adaptively enable comprise instructions executable by the processor to:
transmit a command t

Assignees

• Qualcomm Inc

Inventors

• Damnjanovic Aleksandar
• Malladi Durga Prasad
• Wei Yongbin
• Luo Tao
• Chen Wanshi

Classifications

• H04W56/001 Primary

  Synchronization between nodes · CPC title

• H04W74/08

  Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) · CPC title

• H04W16/14

  Spectrum sharing arrangements {between different networks} · CPC title

• H04W74/0816

  with collision avoidance · CPC title