Methods and apparatus for receiving lte-u network information

Patent metadata

Field	Value
Publication number	US-2016255643-A1
Application number	US-201615051491-A
Country	US
Kind code	A1
Filing date	Feb 23, 2016
Priority date	Feb 27, 2015
Publication date	Sep 1, 2016
Grant date	—

Abstract

Certain aspects of the present disclosure relate to a methods and apparatus for wireless communication. In one aspect, a method of decoding additional information about long-term evolution unlicensed (LTE-U) communications for enhancing wireless communication performance can include receiving, from a LTE-U device, a first wireless local area network (WLAN) packet reserving a communication medium over a time period. The first WLAN communication includes information about a LTE-U communication. The method further includes decoding, at a wireless device, information about the LTE-U communication.

First claim

What is claimed is:

1 . A method of decoding additional information about long-term evolution unlicensed (LTE-U) communications for enhancing wireless communication performance, comprising:
receiving, from a LTE-U device, a first wireless local area network (WLAN) packet reserving a communication medium over a time period, the first WLAN communication including information about a LTE-U communication; and decoding, at a wireless device, information about the LTE-U communication.

2 . The method of claim 1 , further comprising receiving, from the LTE-U device, a second WLAN communication prior to transmission of the first WLAN communication, the second WLAN communication reserving the communication medium over the time period.

3 . The method of claim 2 , wherein reception of the second WLAN communication occurs no later than a short interframe space (SIFS) time after a previous communication on the communication medium.

4 . The method of claim 2 , wherein at least one of the first WLAN communication and the second WLAN communication comprise a clear-to-send to self (C2S) packet.

5 . The method of claim 1 , wherein the first WLAN communication comprises an indication of a presence of the information about the LTE-U communication in the first WLAN communication, the method further comprises decoding the information about the LTE-U communication.

6 . The method of claim 2 , wherein the second WLAN communication comprises an indication of a presence of the information about the LTE-U communication in the first WLAN communication, the method further comprises decoding the information about the LTE-U communication.

7 . The method of claim 2 , wherein the second WLAN communication comprises an indication of a presence of the first WLAN communication, the method further comprises decoding the information about the LTE-U communication.

8 . The method of claim 1 , further comprising determining a presence of the information about the LTE-U communication based on a value in an information element of the first WLAN communication, the method further comprises decoding the information about the LTE-U communication.

9 . The method of claim 2 , further comprising determining a presence of the information about the LTE-U communication based on a value in an information element of the second WLAN communication, the method further comprises decoding the information about the LTE-U communication.

10 . The method of claim 1 , further comprising:
determining one or more of a channel, duty-cycle, duration, and a periodicity of a LTE-U network; and determining one or more of a channel, duty-cycle, duration, and a periodicity of a WLAN network.

11 . The method of claim 10 , further comprising:
nulling interference from the LTE-U device; and receiving another WLAN communication from another device during the time period.

12 . The method of claim 1 , further comprising determining a channel-estimate from the LTE-U device based on the information about the LTE-U communication included in the first WLAN communication.

13 . The method of claim 1 , wherein the information about the LTE-U communication comprises a value in one or more training signals located in the first WLAN communication.

14 . The method of claim 1 , further comprising:
determining a utilization of the communication medium by the LTE-U device based on the information about the LTE-U communication in the first WLAN communication; and communicating with other devices based on the utilization.

15 . The method of claim 1 , further comprising:
determining a time period for a communication from the LTE-U device based on the information in the first WLAN communication; determining a channel for the communication based on the information in the first WLAN communication; and scheduling a transmission or reception of another WLAN communication on a different channel during the time period.

16 . The method of claim 1 , wherein the information comprises one or more of: an identifier of a LTE-U network or LTE-U network operator; a position of the first WLAN communication with respect to the LTE-U communication; an identifier of one or more channels occupied by the LTE-U network; a periodicity and/or duty-cycle/duration of the LTE-U communication.

17 . An apparatus for wireless communication, comprising:
a receiver configured to receive from a LTE-U device, a first wireless local area network (WLAN) packet reserving a communication medium over a time period, the first WLAN communication including information about a LTE-U communication; and a processor configured to decode information about the LTE-U communication.

18 . The apparatus of claim 17 , wherein the receiver is further configured to receive a second WLAN communication prior to transmission of the first WLAN communication, the second WLAN communication reserving the communication medium over the time period.

19 . The apparatus of claim 18 , wherein the receiver is further configured to receive the second WLAN communication no later than a short interframe space (SIFS) time after a previous communication on the communication medium.

20 . The apparatus of claim 18 , wherein at least one of the first WLAN communication and the second WLAN communication comprise a clear-to-send to self (C2S) packet.

21 . The apparatus of claim 17 , wherein the first WLAN communication comprises an indication of a presence of the information about the LTE-U communication in the first WLAN communication, the method further comprises decoding the information about the LTE-U communication.

22 . The apparatus of claim 18 , wherein the second WLAN communication comprises an indication of a presence of the information about the LTE-U communication in the first WLAN communication, the method further comprises decoding the information about the LTE-U communication.

23 . The apparatus of claim 18 , wherein the second WLAN communication comprises an indication of a presence of the first WLAN communication, the method further comprises decoding the information about the LTE-U communication.

24 . The apparatus of claim 17 , wherein the processor is further configured to:
determine a presence of the information about the LTE-U communication based on a value in an ethertype field of the first WLAN communication; and decode the information about the LTE-U communication.

25 . The apparatus of claim 18 , wherein the processor is further configured to:
determine a presence of the information about the LTE-U communication based on a value in an ethertype field of the second WLAN communication; and decode the information about the LTE-U communication.

26 . The apparatus of claim 17 , wherein the processor is further configured to:
determine one or more of a channel, duty-cycle, duration, and a periodicity of a LTE-U network based on the information about the LTE-U communication in the first WLAN communication; and determine one or more of a channel, duty-cycle, duration, and a periodicity of a WLAN network based on the first WLAN communication.

27 . The apparatus of claim 26 , wherein the receiver is further configured to:
null interference from the LTE-U device; and receive another WLAN communication from another device during the time period.

28 . The apparatus of claim 17 , wherein the processor is further configured to determine

Assignees

• Qualcomm Inc

Inventors

• Malik Rahul
• Sampath Hemanth

Classifications

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W72/1215 Primary

  for collaboration of different radio technologies · CPC title

• H04W74/0816 Primary

  with collision avoidance · CPC title

• H04W88/10

  adapted for operation in multiple networks, e.g. multi-mode access points · CPC title