# US 9,438,459 B2 · Multi-partition radio frames

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,438,459 B2
- Document ID: US9438459B2
- Status: Granted
- Kind: B2
- Application number: 14/805,004
- Filed: 2015-07-21
- Published: 2016-02-11
- Granted: 2016-09-06
- Earliest claimed: 2014-08-07
- Assignees: Coherent Logix, Incorporated; Sinclair Television Group, Inc.
- Applicants: Coherent Logix, Incorporated; Sinclair Television Group, Inc.
- Inventors: Michael J. Simon; Kevin A. Shelby; Mark Earnshaw
- Web page: https://patentgrep.com/patent/US9438459B2

## CPC

- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04H 20/42: Arrangements for resource management
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 12/189: {in combination with wireless systems (selective distribution or broadcast in wireless communication networks H04W4/06)}
- H04L 27/2602: {Signal structure}
- H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)}
- H04L 27/2627: {Modulators}
- H04L 27/2649: {Demodulators}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/30: Resource management for broadcast services
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Techniques relating to generating and receiving radio frames with multiple partitions are disclosed. A mobile device may include a wireless radio, one or more antennas, and one or more processors. In some embodiments, the mobile device is configured to receive a frame of wireless data that includes a plurality of partitions and partition data. In some embodiments, the plurality of partitions each include multiple orthogonal frequency-division multiplexing (OFDM) symbols, and different ones of the partitions have different frequency transform sizes (e.g., different FFT sizes). In some embodiments, the partition data indicates the frequency transform sizes for the ones of the partitions. In some embodiments, the mobile device is configured to select, based on the partition data, one or more of the plurality of partitions and decode the selected one or more partitions to determine data represented by the OFDM symbols in the selected one or more partitions.

## Claims

### Claim 1

A mobile device, comprising:
a wireless radio;
one or more antennas; and
one or more processors;
wherein the mobile device is configured to:
receive, using the wireless radio, a frame of wireless data that includes:
a plurality of partitions that each include multiple orthogonal frequency-division multiplexing (OFDM) symbols, wherein different ones of the partitions have different frequency transform sizes; and
partition data that indicates the frequency transform sizes for the ones of the partitions, wherein a first one of the plurality of partitions has a first frequency transform size that is adapted for decoding by mobile devices moving at velocities up to a first maximum velocity and wherein a second one of the plurality of partitions has a second frequency transform size that is adapted for decoding by mobile devices that are moving at velocities up to a second, different maximum velocity;
select, based on the partition data, one or more but not all of the plurality of partitions; and
decode the selected one or more partitions to determine data represented by the OFDM symbols in the selected one or more partitions.

### Claim 2 (depends on 1)

The mobile device of claim 1, wherein the mobile device is further configured to:
determine that a velocity of the mobile device falls within a particular range of velocities, wherein the mobile device is configured to select the one or more of the plurality of partitions based on the particular range.

### Claim 3 (depends on 1)

The mobile device of claim 1, wherein the mobile device is configured to select the one or more of the plurality of partitions based on one or more parameters that indicate whether to select local content for a first broadcast area or regional content for a second, greater broadcast area.

### Claim 4 (depends on 1)

The mobile device of claim 1, wherein OFDM symbols in different ones of the partitions have different time lengths in the time dimension.

### Claim 5 (depends on 1)

The mobile device of claim 1, wherein the partitions are divided in at least one of the time dimension or the frequency dimension.

### Claim 6 (depends on 1)

The mobile device of claim 1, wherein the different frequency transform sizes correspond to different Fast Fourier Transform (FFT) sizes.

### Claim 7 (depends on 1)

The mobile device of claim 1, wherein the frame of wireless data is a broadcast radio frame.

### Claim 8 (depends on 1)

The mobile device of claim 1, wherein OFDM symbols in the selected one or more of the plurality of partitions represent video content.

### Claim 9 (depends on 1)

The mobile device of claim 1, wherein different ones of the partitions have different cyclic prefix lengths.

### Claim 10

A non-transitory computer-readable medium having instructions stored thereon that are executable by an electronic device to perform operations comprising:
receiving a frame of broadcast wireless data that includes:
a plurality of partitions that each include multiple orthogonal frequency-division multiplexing (OFDM) symbols, wherein different ones of the partitions have different frequency transform sizes; and
partition data that indicates the frequency transform sizes for the ones of the partitions, wherein a first one of the plurality of partitions has a first frequency transform size that is adapted for decoding by mobile devices moving at velocities up to a first maximum velocity and wherein a second one of the plurality of partitions has a second frequency transform size that is adapted for decoding by mobile devices that are moving at velocities up to a second, different maximum velocity;
selecting, based on the partition data, one or more but not all of the plurality of partitions; and
decoding the selected one or more partitions to determine data represented by the OFDM symbols in the selected one or more partitions.

### Claim 11 (depends on 10)

The non-transitory computer-readable medium of claim 10, wherein the operations further comprise:
determining that a velocity of the electronic device falls within a particular range of velocities, wherein the electronic device is configured to select the one or more of the plurality of partitions based on the particular range.

### Claim 12 (depends on 10)

The non-transitory computer-readable medium of claim 10 wherein the partitions are divided in the time dimension and/or the frequency dimension.

### Claim 13

An apparatus, comprising one or more processors and configured to:
generate a payload region for a frame of wireless data, wherein the payload region includes a plurality of partitions that each include multiple orthogonal frequency-division multiplexing (OFDM) symbols, wherein different ones of the partitions have different frequency transform sizes for the OFDM symbols in the ones of the partitions;
wherein a first one of the plurality of partitions has a first Fast Fourier Transform (FFT) size that is adapted for decoding by mobile devices moving at velocities up to a first maximum velocity and wherein a second one of the plurality of partitions has a second FFT size that is adapted for decoding by mobile devices that are moving at velocities up to a second, different maximum velocity; and
transmit the generated payload region.

### Claim 14 (depends on 13)

The apparatus of claim 13, wherein the apparatus further comprises at least one wireless radio and at least one antenna and wherein the apparatus is configured to wirelessly broadcast the frame of wireless data via the at least one antenna.

### Claim 15 (depends on 13)

The apparatus of claim 13, wherein the apparatus is configured to transmit the payload region to a base station for broadcast transmission of the frame of wireless data.

### Claim 16 (depends on 13)

The apparatus of claim 13, wherein different ones of the partitions have different cyclic prefix sizes.

### Claim 17 (depends on 13)

The apparatus of claim 13, wherein the apparatus is further configured to:
generate signaling information for a non-payload region of the frame, wherein the signaling information indicates a frequency transform size for each partition.

### Claim 18 (depends on 13)

The apparatus of claim 13, wherein the first FFT size is adapted for decoding by mobile devices carried in vehicles and the second FFT size is adapted for decoding by mobile devices carried by pedestrians.

### Claim 19

A method, comprising:
receiving or generating, by a wireless base station, a payload region for a frame of wireless data, wherein the payload region includes a plurality of partitions that each include multiple orthogonal frequency-division multiplexing (OFDM) symbols, wherein different ones of the partitions have different frequency transform sizes for the OFDM symbols in the ones of the partitions;
wherein a first one of the plurality of partitions has a first Fast Fourier Transform (FFT) size that is adapted for decoding by mobile devices moving at velocities in a particular range of velocities and wherein a second one of the plurality of partitions has a second FFT size that is adapted for decoding by mobile devices that are moving at velocities in a second, different range of velocities; and
broadcasting, by the wireless base station, the frame of wireless data including the payload region.