# US 11,115,896 B2 · Handling QoS rules on QoS operation errors

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- Number: US 11,115,896 B2
- Document ID: US11115896B2
- Status: Granted
- Kind: B2
- Application number: 16/829,239
- Filed: 2020-03-25
- Published: 2020-10-08
- Granted: 2021-09-07
- Earliest claimed: 2019-04-02
- Assignees: Mediatek Inc.
- Applicants: Mediatek Inc.
- Inventors: Chien-Chun Huang-Fu; Chi-Hsien Chen
- Web page: https://patentgrep.com/patent/US11115896B2

## CPC

- H04W 40/12: based on transmission quality or channel quality
- 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 28/24: Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
- H04W 76/22: Manipulation of transport tunnels
- H04W 80/02: Data link layer protocols
- H04W 84/042: {Public Land Mobile systems, e.g. cellular systems}
- 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 of enhanced error handling for 5G QoS operations associated with a PDU session is proposed. A QoS operation can be received via a PDU session modification procedure. In one example, the QoS operation is to create a new QoS rule for a PDU session, however, there is an existing QoS rule having the same QoS rule ID (QRI). The UE detects whether the QoS operation will causing the PDU session have no default QoS rule or have more than one default QoS rules. If the existing QoS rule is a default QoS rule, or if the new QoS rule have a default QoS rule (DQR) indication bit set to be true, then the UE rejects the QoS operation and indicates a QoS operation error to the network.

## Claims

### Claim 1

A method, comprising:
receiving Quality of Service (QoS) rule configuration by a user equipment (UE) in a mobile communication network for performing a QoS operation on a new QoS rule associated with a protocol data unit (PDU) session having a default QoS rule, wherein the new QoS rule have a QoS rule ID (QRI) and a default QoS rule (DQR) indicator;
determining that there is an existing QoS rule associated with the same PDU session, wherein the existing QoS rule has the same QRI as the new QoS rule;
detecting whether the existing QoS rule is the default QoS rule and whether the DQR indicator indicates that the new QoS rule becomes the default QoS rule; and
transmitting a QoS operation error code to the network when either the existing QoS rule is the default QoS rule or when the DQR indicator indicates that the new QoS rule becomes the default QoS rule;
furthermore proceeding with the QoS operation without diagnosing an error when the existing QoS rule is not the default QoS rule and the DQR indicator indicates that the new QoS rule is not the default QoS rule.

### Claim 2 (depends on 1)

The method of claim 1, wherein the QoS rule configuration is received via a PDU session modification command message for the UE to perform the QoS operation.

### Claim 3 (depends on 2)

The method of claim 2, wherein the QoS operation is for the UE to “create new QoS rule” via the PDU session modification command.

### Claim 4 (depends on 2)

The method of claim 2, wherein the UE rejects the PDU session modification command message with a 5G session management (5GSM) cause value indicating an error of the QoS operation.

### Claim 5 (depends on 1)

The method of claim 1, wherein the UE deletes the existing QoS rule when the QoS operation is proceeded successfully.

### Claim 6 (depends on 1)

The method of claim 1, wherein the QoS rule configuration is received via a modify EPS bearer context request message for the UE to perform the QoS operation.

### Claim 7 (depends on 6)

The method of claim 6, further comprising:
proceeding with the QoS operation without diagnosing an error when the existing QoS rule is not the default QoS rule and the DQR indicator indicates that the new QoS rule is not the default QoS rule.

### Claim 8 (depends on 7)

The method of claim 7, further comprising:
deleting the existing QoS rule when the QoS operation is proceeded successfully.

### Claim 9

A User Equipment (UE), comprising:
a receiver that receives Quality of Service (QoS) rule configuration by a user equipment (UE) in a mobile communication network for performing a QoS operation on a new QoS rule associated with a protocol data unit (PDU) session having a default QoS rule, wherein the new QoS rule have a QoS rule ID (QRI) and a default QoS rule (DQR) indicator;
a QoS rule management circuit that determines there is an existing QoS rule associated with the same PDU session, wherein the existing QoS rule has the same QRI as the new QoS rule, wherein the UE also detects whether the existing QoS rule is the default QoS rule and whether the DQR indicator indicates that the new QoS rule becomes the default QoS rule; and
a transmitter that transmits a QoS operation error code to the network when either the existing QoS rule is the default QoS rule or when the DQR indicator indicates that the new QoS rule becomes the default QoS rule;
furthermore proceeding with the QoS operation without diagnosing an error when the existing QoS rule is not the default QoS rule and the DQR indicator indicates that the new QoS rule is not the default QoS rule.

### Claim 10 (depends on 9)

The UE of claim 9, wherein the QoS rule configuration is received via a PDU session modification command message for the UE to perform the QoS operation.

### Claim 11 (depends on 10)

The UE of claim 10, wherein the QoS operation is for the UE to “create new QoS rule” via the PDU session modification command.

### Claim 12 (depends on 10)

The UE of claim 10, wherein the UE rejects the PDU session modification command message with a 5G session management (5GSM) cause value indicating an error of the QoS operation.

### Claim 13 (depends on 9)

The UE of claim 9, wherein the UE deletes the existing QoS rule when the QoS operation is proceeded successfully.

### Claim 14 (depends on 9)

The UE of claim 9, wherein the QoS rule configuration is received via a modify EPS bearer context request message for the UE to perform the QoS operation.

### Claim 15 (depends on 14)

The UE of claim 14, wherein the UE proceeds with the QoS operation without diagnosing an error when the existing QoS rule is not the default QoS rule and the DQR indicator indicates that the new QoS rule is not the default QoS rule.

### Claim 16 (depends on 15)

The UE of claim 15, wherein the UE deletes the existing QoS rule when the QoS operation is proceeded successfully.