# US 2015/0146522 A1 · M2m device retry instruction to non-peak network time

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- Number: US 2015/0146522 A1
- Document ID: US20150146522A1
- Status: Published application
- Kind: A1
- Application number: 14/087,283
- Filed: 2013-11-22
- Published: 2015-05-28
- Earliest claimed: 2013-11-22
- Assignees: Cellco Partnership d/b/a Verizon Wireless; Verizon Patent and Licensing Inc.
- Applicants: Cellco Partnership d/b/a Verizon Wireless; Verizon Patent and Licensing Inc.
- Inventors: Priscilla Lau; Patricia R. Chang; John F. Macias; Yee Sin Chan; Arda Aksu; Donna L. Polehn
- Web page: https://patentgrep.com/patent/US20150146522A1

## CPC

- H04W 76/18: Management of setup rejection or failure
- H04L 47/83: based on usage prediction
- H04W 28/0215: {based on user or device properties, e.g. MTC-capable devices (services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51)}
- H04W 28/0268: {using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] (negotiating SLA or negotiating QoS H04W28/24)}
- H04W 28/0284: {detecting congestion or overload during communication (monitoring arrangements H04L43/00)}
- H04L 47/32: by discarding or delaying data units, e.g. packets or frames
- H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A network device stores back-off definitions for different service categories of machine-type communications (MTC). The network device receives a service connection request originating from a wireless terminal and identifies the service connection request as a MTC request. The network device identifies an available bandwidth capacity for at least one portion of a network associated with the MTC request and determines, when the available bandwidth is below an admission threshold capacity, an admission control level for the MTC request. The admission control level is selected from a group of different admission control levels. The network device calculates a retry interval for the MTC request based on the determined admission control level for the MTC request and the available bandwidth capacity, and sends the retry interval with a response for the MTC request.

## Claims

### Claim 1

A method, comprising:
storing, in a memory of a network device, back-off definitions for different service categories of machine-type communications (MTC);
receiving a service connection request originating from a wireless terminal;
identifying, by the network device, the service connection request as a MTC request;
identifying, by the network device, an available bandwidth capacity for at least one portion of a network associated with the MTC request;
determining, by the network device and when the available bandwidth is below an admission threshold capacity, an admission control level for the MTC request, wherein the admission control level is selected from a group of different admission control levels;
calculating, by the network device, a retry interval for the MTC request based on the determined admission control level for the MTC request and the available bandwidth capacity; and
sending, by the network device, the retry interval with a response for the MTC request.

### Claim 2 (depends on 1)

The method of claim 1, wherein identifying the service connection request as the MTC request includes:
identifying, in the service connection request, a dedicated access point name (APN) for the MTC.

### Claim 3 (depends on 1)

The method of claim 1, wherein the at least one portion of the network associated with the MTC includes wireless spectrum for a particular eNodeB.

### Claim 4 (depends on 1)

The method of claim 1, wherein determining the admission control level for the MTC request includes storing registration information for the wireless terminal and performing a lookup based on a device ID of the wireless terminal.

### Claim 5 (depends on 1)

The method of claim 1, wherein determining the admission control level for the MTC request includes detecting a service category identifier in the MTC request and associating the service category with the admission control level.

### Claim 6 (depends on 1)

The method of claim 1, wherein the admission control level for the MTC request is selected from a group of admission control levels that are defined based on a delay sensitivity for particular types of MTC.

### Claim 7 (depends on 1)

The method of claim 1, wherein calculating the retry interval for the MTC request includes:
selecting the retry interval from a look-up table based on the admission control level and the available bandwidth capacity.

### Claim 8 (depends on 1)

The method of claim 1, wherein calculating the retry interval for the MTC request includes:
predicting a time period when the available bandwidth capacity will be below a required threshold for the determined admission control level, and
calculating a retry interval for the wireless terminal that corresponds to the time period.

### Claim 9 (depends on 8)

The method of claim 8, wherein calculating the retry interval for the MTC request further comprises:
selecting the required threshold for the determined admission control level from a group of thresholds for different admission control levels.

### Claim 10 (depends on 1)

The method of claim 1, wherein calculating the retry interval for the MTC request further comprises:
selecting a first interval for the determined admission control level when the available bandwidth capacity is at a first level, and
selecting a second interval for the determined admission control level when the available bandwidth capacity is at second level.

### Claim 11

A network device, comprising:
a memory configured to store a plurality of instructions; and
a processor configured to execute instructions in the memory to:
store, in the memory, back-off definitions for different service categories of machine-type communications (MTC);
receive a service connection request originating from a wireless terminal;
identify the service connection request as a MTC request;
identify an available bandwidth capacity for at least one portion of a network associated with the MTC request;
determine, when the available bandwidth is below an admission threshold capacity, an admission control level for the MTC request, wherein the admission control level is selected from a group of different admission control levels;
calculate a retry interval for the MTC request based on the determined admission control level for the MTC request and the available bandwidth capacity; and
send the retry interval with a response for the MTC request.

### Claim 12 (depends on 11)

The network device of claim 11, wherein, when identifying the service connection request as a MTC request, the processor is further configured to execute instructions in the memory to:
identify, in the service connection request, a dedicated access point name (APN) for the MTC.

### Claim 13 (depends on 11)

The network device of claim 11, wherein the network device comprises a Mobility Management Entity (MME) operating within a Long Term Evolution (LTE)-based network.

### Claim 14 (depends on 11)

The network device of claim 11, wherein, determining the admission control level for the MTC request, the processor is further configured to execute instructions in the memory to:
store registration information for the wireless terminal, and
perform a lookup of the admission control level based on a device ID of the wireless terminal.

### Claim 15 (depends on 11)

The network device of claim 11, wherein, when determining the admission control level for the MTC request, the processor is further configured to execute instructions in the memory to:
detect a service category identifier in the MTC request, and
associate the service category with the admission control level.

### Claim 16 (depends on 11)

The network device of claim 11, wherein, when calculating the retry interval for the MTC request, the processor is further configured to execute instructions in the memory to:
select the retry interval from a look-up table based on the admission control level and the available bandwidth capacity, wherein the look-up table includes multiple admission control levels associated with multiple required bandwidth thresholds.

### Claim 17 (depends on 11)

The network device of claim 11, wherein, when determining an admission control level for the MTC request, the processor is further configured to execute instructions in the memory to:
receive, from a home subscriber server (HSS) device, a service category or admission control level, associated with the wireless terminal, during an authentication and authorization process for the wireless terminal at an initial network attachment.

### Claim 18

A non-transitory computer-readable medium storing instructions executable by a computational device to:
store back-off definitions for different service categories of machine-type communications (MTC);
receive a service connection request originating from a wireless terminal;
identify the service connection request as a MTC request;
identify an available bandwidth capacity for at least one portion of a network associated with the MTC request;
determine, when the available bandwidth is below an admission threshold capacity, an admission control level for the MTC request, wherein the admission control level is selected from a group of different admission control levels;
calculate a retry interval for the MTC request based on the determined admission control level for the MTC request and the available bandwidth capacity; and
send the retry interval with a response for the MTC request.

### Claim 19 (depends on 18)

The non-transitory computer-readable medium of claim 18, wherein the instructions to identify the service connection request as the MTC request include one or more instructions to:
identify, in the service connection request, a dedicated access point name (APN) for MTC.

### Claim 20 (depends on 18)

The non-transitory computer-readable medium of claim 18, wherein the instructions to determine the admission control level for the MTC request include one or more instructions to:
detect a service category identifier in the MTC request and associate the service category with the admission control level.