IP Library Granted Patent US 9,844,028
Granted Patent B2
US 9,844,028 · App. 14/825,944 · Granted Dec 12, 2017

Systems and methods for improved communication efficiency in wireless networks

Inventors: Lin Yang (San Diego, CA); Jialing Li Chen (San Diego, CA); Sameer Vermani (San Diego, CA); Bin Tian (San Diego, CA); Rahul Tandra (San Diego, CA); Youhan Kim (San Jose, CA)
Assignee: QUALCOMM Incorporated
H04W72/02H04W72/04
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Quick Facts
Patent No.
US 9,844,028
App. No.
14/825,944
Granted
Dec 12, 2017
Kind
B2
Abstract

Methods and apparatus for providing wireless messages according to various tone plans can include, for example, a method of wireless communication. The method includes selecting at least one of a 242-tone resource unit (RU), associated with a 256-tone plan including 234 data tones, 8 pilot tones, 3 direct current tones, and 11 edge tones, for transmission over a 20 MHz bandwidth, or a 484-tone RU, associated with a 512-tone plan including 468 data tones, 16 pilot tones, 5 direct current tones, and 23 edge tones, for transmission over a 40 MHz bandwidth. The method further includes providing a message for transmission according to the 256-tone plan or 512-tone plan.

Claims (39)

1. An apparatus configured to perform wireless communication, comprising:

a memory that stores instructions;

a processing system coupled with the memory and configured to execute the instructions to:

generate a message for wireless communication according to a resource unit (RU) associated with a 256-tone plan comprising 234 data tones, 8 pilot tones, 3 direct current tones, and 11 edge tones, for transmission over a 20 MHz bandwidth;

determine a number of spatial streams for transmitting the message;

select between binary convolutional code (BCC) interleaving or low density parity check (LDPC) tone mapping depending on the number of spatial streams, wherein the processing system is configured to select BCC interleaving when the number of spatial streams is less than or equal to four, and LDPC tone mapping when the number of spatial streams is greater than four; and

provide the message for transmission according to the 256-tone plan; and

a transmitter configured to transmit the message.

2. The apparatus of claim 1 , wherein the processing system is configured to either:

interleave the encoded data using an interleaver depth of 26 and an interleaved rotation index of 58 when binary convolutional code (BCC) interleaving is selected; or

map tones of the message using a tone mapping distance (DTM) of 9 when low density parity check (LDPC) is selected.

3. The apparatus of claim 1 , wherein the apparatus is a mobile station, and wherein the transmitter transmits the message through an antenna of the mobile station to an access point serving the mobile station.

4. The apparatus of claim 1 , wherein the apparatus is an access point, and wherein the transmitter transmits the message through an antenna of the access point to a mobile station served by the access point.

5. A method for wireless communication, comprising:

generating a message for wireless communication according to a resource unit (RU) associated with a 256-tone plan comprising 234 data tones, 8 pilot tones, 3 direct current tones, and 11 edge tones, for transmission over a 20 MHz bandwidth;

determining a number of spatial streams for transmitting the message;

selecting between binary convolutional code (BCC) interleaving or low density parity check (LDPC) tone mapping depending on the number of spatial streams, wherein BCC interleaving is selected when the number of spatial streams is less than or equal to four, and LDPC tone mapping is selected when the number of spatial streams is greater than four;

providing the message for transmission according to the 256-tone plan; and

transmitting the message.

6. The method of claim 5 , further comprising either:

interleaving the encoded data using an interleaver depth of 26 and interleaved rotation index of 58 when binary convolutional code (BCC) interleaving is selected; or

mapping tones of the message using a tone mapping distance (DTM) of 9 when low density parity check (LDPC) is selected.

7. The method of claim 5 , wherein the method is performed on a mobile station, and wherein transmitting the message is through a transmitter and an antenna of the mobile station to an access point serving the mobile station.

8. The method of claim 5 , wherein the method can be performed on an access point, and wherein transmitting the message is through a transmitter and an antenna of the access point to a mobile station served by the access point.

9. An apparatus for wireless communication, comprising:

means for generating a message for wireless communication according to a resource unit (RU) associated with a 256-tone plan comprising 234 data tones, 8 pilot tones, 3 direct current tones, and 11 edge tones, for transmission over a 20 MHz bandwidth;

means for determining a number of spatial streams for transmitting the message;

means for selecting between binary convolutional code (BCC) interleaving or low density parity check (LDPC) tone mapping depending on the number of spatial streams, wherein BCC interleaving is selected when the number of spatial streams is less than or equal to four, and LDPC tone mapping is selected when the number of spatial streams is greater than four;

means for providing the message for transmission according to the 256-tone plan; and

means for transmitting the message.

10. The apparatus of claim 9 , further comprising means for either:

interleaving the encoded data using an interleaver depth of 26 and an interleaved rotation index of 58 when binary convolutional code (BCC) interleaving is selected; or

mapping tones of the message using a tone mapping distance (DTM) of 9 when low density parity check (LDPC) is selected.

11. A non-transitory computer-readable medium comprising code that, when executed, causes an apparatus to:

generate a message for wireless communication according to a resource unit (RU) associated with a 256-tone plan comprising 234 data tones, 8 pilot tones, 3 direct current tones, and 11 edge tones, for transmission over a 20 MHz bandwidth;

determine a number of spatial streams for transmitting the message;

selecting between binary convolutional code (BCC) interleaving or low density parity check (LDPC) tone mapping depending on the number of spatial streams, wherein BCC interleaving is selected when the number of spatial streams is less than or equal to four, and LDPC tone mapping is selected when the number of spatial streams is greater than four;

provide the message for transmission according to the 256-tone plan; and

transmit the message.

Assignments (3)
AMENDED AND RESTATED PATENT SECURITY AGREEMENT Recorded May 19, 2022
From: UROGEN PHARMA LTD.
To: RTW INVESTMENTS ICA V
Reel/Frame 060121/0591 →
SECURITY INTEREST Recorded Apr 8, 2021
From: UROGEN PHARMA LTD.
To: RTW INVESTMENTS ICAV
Reel/Frame 055868/0385 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 3, 2016
From: YANG, LIN; CHEN, JIALING LI; VERMANI, SAMEER; TIAN, BIN; TANDRA, RAHUL; KIM, YOUHAN
To: QUALCOMM INCORPORATED
Reel/Frame 037654/0933 →
Continuity (4)
Provisional Application 62038103 · Aug 15, 2014
Provisional Application 62189165 · Jul 6, 2015
Provisional Application 62069792 · Oct 28, 2014
Related Publication 20160050666A1 · Feb 18, 2016