# US 11,310,160 B2 · Bandwidth information notification method, network node and communication system

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- Number: US 11,310,160 B2
- Document ID: US11310160B2
- Status: Granted
- Kind: B2
- Application number: 15/682,352
- Filed: 2017-08-21
- Published: 2017-11-30
- Granted: 2022-04-19
- Earliest claimed: 2009-08-21
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Hao Long
- Web page: https://patentgrep.com/patent/US11310160B2

## CPC

- H04L 47/20: Traffic policing
- H04L 1/0003: {by switching between different modulation schemes}
- H04L 47/12: Avoiding congestion; Recovering from congestion
- H04L 47/2408: for supporting different services, e.g. a differentiated services [DiffServ] type of service
- H04W 8/04: Registration at HLR or HSS [Home Subscriber Server]
- H04W 28/12: using signalling between network elements
- H04W 28/18: Negotiating wireless communication parameters
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A bandwidth information notification method includes: obtaining bandwidth information of a microwave link; and sending a plurality of OAM messages carrying the bandwidth information to an endpoint, wherein first one or more OAM messages of the plurality of OAM messages are sent more quickly than at least one of the rest of the plurality of OAM messages.

## Claims

### Claim 1

A method, comprising:
obtaining, by a network node, a current bandwidth of a microwave link in a current modulation mode, wherein the current bandwidth of the microwave link varies with weather over time;
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically sending, by the network node, a plurality of operation, administration and maintenance (OAM) messages carrying the current bandwidth of the microwave link to an endpoint; and
stopping sending, by the network node, OAM messages to the endpoint in response to the current bandwidth of the microwave link in the current modulation mode changing to be the target bandwidth in the target modulation mode.

### Claim 2 (depends on 1)

The method according to claim 1, wherein obtaining the current bandwidth of the microwave link in the current modulation mode comprises:
detecting, by the network node, the current modulation mode of the microwave link; and
obtaining, by the network node, the current bandwidth of the microwave link in the current modulation mode.

### Claim 3 (depends on 1)

The method according to claim 1, wherein periodically sending the plurality of OAM messages comprises:
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically sending, by the network node, a first plurality of OAM messages carrying the current bandwidth of the microwave link in the current modulation mode to the endpoint; and
after sending the first plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint, sending a second plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint; and
wherein OAM messages of the second plurality of OAM messages are periodically sent one at a time using a first period, and OAM messages of the first plurality of OAM messages are periodically sent one at a time using a second period that is smaller than the first period.

### Claim 4

A network node, comprising:
a processor, configured to obtain a current bandwidth of a microwave link in a current modulation mode, wherein the current bandwidth of the microwave link varies with weather over time; and
a transmitter, configured to:
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically send a plurality of operation, administration and maintenance (OAM) messages carrying the current bandwidth of the microwave link to an endpoint; and
wherein the transmitter is further configured to stop sending, by the network node, OAM messages to the endpoint in response to the current bandwidth of the microwave link in the current modulation mode changing to be the target bandwidth in the target modulation mode.

### Claim 5 (depends on 4)

The network node according to claim 4, wherein the processor is configured to:
detect the current modulation mode of the microwave link; and
obtain the current bandwidth of the microwave link in the current modulation mode.

### Claim 6 (depends on 4)

The network node according to claim 4, wherein the transmitter is configured to:
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically send a first plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint; and
after sending the first plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint, send a second plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint; and
wherein OAM messages of the second plurality of OAM messages are periodically sent one at a time using a first period, and OAM messages of the first plurality of OAM messages are periodically sent one at a time using a second period that is smaller than the first period.

### Claim 7

A method, comprising:
obtaining, by a network node, a current bandwidth of a microwave link in a current modulation mode, wherein the current bandwidth of the microwave link varies with weather over time; and
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically sending, by the network node, a plurality of operation, administration and maintenance (OAM) messages carrying the current bandwidth of the microwave link to an endpoint of a service connection;
stopping sending, by the network node, OAM messages to the endpoint in response to the current bandwidth of the microwave link in the current modulation mode changing to be the target bandwidth in the target modulation mode;
receiving, by the endpoint of the service connection, the plurality of OAM messages; and
adjusting, by the endpoint of the service connection, a service policy for the service connection according to the current bandwidth of the microwave link carried in the plurality of OAM messages.

### Claim 8 (depends on 7)

The method according to claim 7, wherein obtaining the current bandwidth of the microwave link in the current modulation mode comprises:
detecting, by the network node, the current modulation mode of the microwave link; and
obtaining monitoring, by the network node, the current bandwidth of the microwave link in the current modulation mode.

### Claim 9 (depends on 7)

The method according to claim 7, wherein periodically sending the plurality of OAM messages comprises:
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically sending, by the network node, a first plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint; and
after sending the first plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint, sending a second plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint; and
wherein OAM messages of the second plurality of OAM messages are periodically sent one at a time using a first period, and OAM messages of the first plurality of OAM messages are periodically sent one at a time using a second period that is smaller than the first period.

### Claim 10

A communication system, comprising:
a first processor, configured to obtain a current bandwidth of a microwave link in a current modulation mode, wherein the current bandwidth of the microwave link varies with weather over time; and
a transmitter, configured to:
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically send a plurality of operation, administration and maintenance (OAM) messages carrying the current bandwidth of the microwave link to an endpoint;
stop sending OAM messages to the endpoint in response to the current bandwidth of the microwave link in the current modulation mode changing to be the target bandwidth in the target modulation mode;
a receiver, configured to receive the plurality of OAM messages carrying the current bandwidth of the microwave link; and
a second processor, configured to adjust a service policy according to the current bandwidth of the microwave link.

### Claim 11 (depends on 10)

The communication system according to claim 10, wherein the first processor is configured to:
detect the current modulation mode of the microwave link; and
obtain the current bandwidth of the microwave link in the current modulation mode.

### Claim 12 (depends on 10)

The communication system according to claim 10, wherein the transmitter is configured to:
in response to the current bandwidth of the microwave link in the current modulation mode being lower than a target bandwidth in a target modulation mode, periodically send a first plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint; and
after sending the first plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint, send a second plurality of OAM messages carrying the current bandwidth of the microwave link to the endpoint; and
wherein OAM messages of the second plurality of OAM messages are periodically sent one at a time using a first period, and OAM messages of the first plurality of OAM messages are periodically sent one at a time using a second period that is smaller than the first period.