# US 10,375,684 B2 · Systems and methods for fast control messaging for multiple numerology access zones

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- Number: US 10,375,684 B2
- Document ID: US10375684B2
- Status: Granted
- Kind: B2
- Application number: 15/787,346
- Filed: 2017-10-18
- Published: 2018-04-19
- Granted: 2019-08-06
- Earliest claimed: 2016-10-18
- Assignees: Cable Television Laboratories, Inc.
- Applicants: Cable Television Laboratories, Inc.
- Inventors: Dorin Viorel; Balkan Kecicioglu
- Web page: https://patentgrep.com/patent/US10375684B2

## CPC

- 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)}
- H04J 13/0062: {Zadoff-Chu}
- H04L 1/0082: {fields explicitly indicating existence of error in data being transmitted, e.g. so that downstream stations can avoid decoding erroneous packet; relays}
- H04L 5/00: Arrangements affording multiple use of the transmission path
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 27/2602: {Signal structure}
- H04L 27/2613: {Structure of the reference signals}
- H04W 72/1273: of downlink data flows
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 2027/0024: {at the receiver end}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method is provided for detecting an access zone configuration of a downlink wireless transmission received from a wireless network by a receiver. The method includes steps of activating the receiver, synchronizing the receiver with the wireless network, detecting, by the receiver after the step of synchronizing, a received access zone of the downlink wireless transmission, determining a base symbol of the detected access zone, ascertaining a first gap and a second gap from repetitive information contained within the determined base symbol, concluding, from the ascertained first and second gaps, that the detected access zone is part of a multiple access zone configuration, and registering, after the step of concluding, the receiver with the wireless network.

## Claims

### Claim 1

A method of embedding fast signaling information into a plurality of frequency gaps separating different numerology access zones of a multiple access zone architecture in a wireless network, the method comprising the steps of:
introducing the fast signaling information into a plurality of first slots of a first gap of the plurality of gaps, wherein the first gap precedes a first access zone of the multiple access zone structure;
embedding, into a plurality of second slots of a second gap of the plurality of gaps, a time-shifted repetition of the fast signaling information introduced into the plurality of first slots,
wherein the second gap is disposed between the first access zone and a second access zone of the multiple access zone architecture, and wherein the first access zone has a different numerology than the second access zone, and
wherein the fast signaling information in the plurality of first slots in the first gap of a first symbol points to a position in the second gap of a second symbol following the first symbol.

### Claim 2 (depends on 1)

The method of claim 1, wherein the introduced fast signaling information includes a plurality of pseudo-noise sequences utilizing one or more constant amplitude zero auto-correlation functions.

### Claim 3 (depends on 2)

The method of claim 2, wherein the constant amplitude zero auto-correlation functions comprise at least one Zadoff Chu sequence having an original root.

### Claim 4 (depends on 3)

The method of claim 3, wherein the introduced fast signaling information includes a plurality of signaling subcarriers disposed between a first and a second plurality of adjacent guard subcarriers.

### Claim 5 (depends on 3)

The method of claim 3, wherein the time-shifted repetition includes the original root Zadoff Chu sequence modified by a delta lag value.

### Claim 6 (depends on 5)

The method of claim 5, wherein the original root Zadoff Chu sequence is disposed within the first three slots of the plurality of first slots, and wherein the time-shifted repetition is disposed within a fourth sequential slot of the plurality of second slots.

### Claim 7 (depends on 5)

The method of claim 5, wherein the delta lag value is selected to be greater than an expected synchronization time associated with a cell radius of a receiver of the wireless network.

### Claim 8 (depends on 1)

The method of claim 1, wherein the fast signaling information is introduced by a PHY architecture of a transmitter of the wireless network.

### Claim 9 (depends on 8)

The method of claim 8, wherein the fast signaling information is detectable by a PHY layer of a receiver of the wireless network, and wherein the receiver PHY layer compares the detected fast signaling information with a lookup table.

### Claim 10

A method of embedding fast signaling information into a plurality of frequency gaps separating different numerology access zones of a multiple access zone architecture in a wireless network, the method comprising the steps of:
introducing the fast signaling information into a plurality of first slots of a first gap of the plurality of gaps, wherein the first gap precedes a first access zone of the multiple access zone structure;
embedding, into a plurality of second slots of a second gap of the plurality of gaps, a time-shifted repetition of the fast signaling information introduced into the plurality of first slots,
wherein the second gap is disposed between the first access zone and a second access zone of the multiple access zone architecture, and wherein the first access zone has a different numerology than the second access zone,
wherein the introduced fast signaling information includes a plurality of pseudo-noise sequences utilizing one or more constant amplitude zero auto-correlation functions,
wherein the constant amplitude zero auto-correlation functions comprise at least one Zadoff Chu sequence having an original root,
wherein the time-shifted repetition includes the original root Zadoff Chu sequence modified by a delta lag value, and
wherein the original root Zadoff Chu sequence is disposed within the first three slots of the plurality of first slots, and wherein the time-shifted repetition is disposed within a fourth sequential slot of the plurality of second slots.

### Claim 11 (depends on 10)

The method of claim 10, wherein the introduced fast signaling information includes a plurality of signaling subcarriers disposed between a first and a second plurality of adjacent guard subcarriers.

### Claim 12 (depends on 10)

The method of claim 10, wherein the delta lag value is selected to be greater than an expected synchronization time associated with a cell radius of a receiver of the wireless network.

### Claim 13 (depends on 10)

The method of claim 10, wherein the fast signaling information in the plurality of first slots in the first gap of a first symbol points to a position in the second gap of a second symbol following the first symbol.

### Claim 14 (depends on 10)

The method of claim 10, wherein the fast signaling information is introduced by a PHY architecture of a transmitter of the wireless network.

### Claim 15 (depends on 14)

The method of claim 14, wherein the fast signaling information is detectable by a PHY layer of a receiver of the wireless network, and wherein the receiver PHY layer compares the detected fast signaling information with a lookup table.