Traffic advertisement and scheduling in a neighbor aware network data link

Patent metadata

Field	Value
Publication number	US-2016014714-A1
Application number	US-201514794781-A
Country	US
Kind code	A1
Filing date	Jul 8, 2015
Priority date	Jul 9, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

A method includes generating a first traffic announcement message at a first electronic device of a data link. The first traffic announcement message indicates first data is to be transmitted from the first electronic device to a second electronic device of the data link. The method also includes transmitting the first traffic announcement message to one or more electronic devices of the data link during a first paging window.

First claim

What is claimed is:

1 . A method of communicating between electronic devices, the method comprising:
generating a first traffic announcement message at a first electronic device of a data link, wherein the first traffic announcement message indicates first data is to be transmitted from the first electronic device to a second electronic device of the data link; and transmitting the first traffic announcement message to one or more electronic devices of the data link during a first paging window.

2 . The method of claim 1 , wherein the first paging window occurs during a time period corresponding to an active operating mode of the one or more electronic devices, and wherein the first paging window begins one discovery window offset period after a first discovery window of a neighbor aware network (NAN).

3 . The method of claim 2 , wherein the NAN includes a first plurality of electronic devices, wherein the data link includes a second plurality of electronic devices, and wherein the second plurality of electronic devices is a subset of the first plurality of electronic devices.

4 . The method of claim 3 , further comprising transmitting, via a first wireless network reserved for data transmissions within the data link, the first traffic announcement message and the first data from the first electronic device to the second electronic device, wherein the first traffic announcement message is transmitted during a first portion of a first transmission window of the data link, wherein the first transmission window includes the first paging window, and wherein the first data is transmitted during a second portion of the first transmission window.

5 . The method of claim 4 , wherein the first traffic announcement message further indicates second data is to be transmitted from the first electronic device to a third electronic device of the data link, and further comprising transmitting, via the first wireless network, the second data from the first electronic device to the third electronic device.

6 . The method of claim 4 , further comprising:
generating a second traffic announcement message at the first electronic device, wherein the second traffic announcement message indicates second data is to be transmitted from the first electronic device to a third electronic device of the data link; and transmitting the second traffic announcement message to the one or more electronic devices of the data link during a second paging window.

7 . The method of claim 1 , wherein a duration of the first paging window is based on a number of the electronic devices of the data link offering a service to other electronic devices of the data link.

8 . The method of claim 7 , further comprising:
maintaining a count of root announcement (RANN) messages received at the first electronic device from the one or more electronic devices in the data link, wherein each of the RANN messages indicates an electronic device of the data link offering the service; and determining the duration of the first paging window based on comparing the count to a mapping table.

9 . The method of claim 1 , wherein a duration of the first paging window is based on a size of a data link time block corresponding to the data link.

10 . The method of claim 1 , further comprising:
prior to generating the first traffic announcement message, receiving a service discovery message at the first electronic device via a first wireless network reserved for discovery operations and synchronization operations within a neighbor aware network (NAN); and subsequent to receiving the service discovery message and prior to transmitting the first traffic announcement message, configuring the first electronic device to transmit via a second wireless network reserved for data transmissions within the data link.

11 . The method of claim 1 , wherein the first traffic announcement message includes a traffic indicator identifying the second electronic device as a recipient of the first data, and wherein the traffic indicator includes a traffic indication map (TIM), a Bloom filter, a list of media access control addresses, or an announcement traffic indication message (ATIM).

12 . The method of claim 1 , wherein the first traffic announcement message is transmitted via a first wireless network reserved for discovery operations and synchronization operations within a neighbor aware network (NAN), and wherein the paging window begins one discovery window offset period after termination of a first discovery window.

13 . The method of claim 12 , further comprising, after the first traffic announcement message is transmitted via the first wireless network:
configuring the first electronic device to transmit via a second wireless network reserved for data transmissions corresponding to the data link; and transmitting the first data from the first electronic device to the second electronic device via the second wireless network.

14 . The method of claim 12 , wherein the first traffic announcement message includes a traffic indication map, the traffic indication map comprising a bitmap, and wherein values of one or more bits of the bitmap identify the one or more electronic devices as recipients of data transmissions from the first electronic device during a first transmission window.

15 . The method of claim 14 , wherein a first bit of the traffic indication map indicates the first data is to be transmitted to the second electronic device of the data link, and wherein a second bit of the traffic indication map indicates second data is to be transmitted to a third electronic device of the data link.

16 . The method of claim 15 , wherein a location of the first bit in the traffic indication map is based on an association identifier assigned by the first electronic device to the second electronic device.

17 . The method of claim 1 , wherein a first contention window parameter is selected based on a duration of the paging window, a size of paging messages, and a target collision probability of paging messages.

18 . The method of claim 17 , wherein a second contention window parameter is selected based on a duration of a first transmission window, a size of data transmissions, and a target collision probability of data transmissions, and wherein the first transmission window includes the first paging window.

19 . The method of claim 1 , further comprising receiving an acknowledgement from the second electronic device responsive to the first traffic announcement message, wherein the acknowledgement serves as a power save poll (PS-POLL) message.

20 . The method of claim 1 , further comprising receiving an acknowledgement from the second electronic device responsive to the first traffic announcement message, wherein the acknowledgement is a quality of service null (QoS_NULL) frame.

21 . The method of claim 20 , wherein the QoS_NULL frame includes a reverse direction grant (RDG) authorizing the first electronic device to transmit a response to the second electronic device within a short interframe space (SIFS) period without contention.

22 . The method of claim 1 , further comprising transmitting at least one data frame from the first electronic device to the second electronic device in response to receiving an acknowledgement from the second electronic device responsive to the first traffic announcement message.

23 . The method of claim 1 , wherein the first traffic announcement message includes a recipient t

Assignees

• Qualcomm Inc

Inventors

• Patil Abhishek Pramod
• Abraham Santosh Paul
• Raissinia Alireza
• Cherian George

Classifications

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04W4/06

  Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services · CPC title

• H04W12/10

  Integrity · CPC title

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W68/02

  Arrangements for increasing efficiency of notification or paging channel · CPC title