# US 2022/0286901 A1 · Uplink pdr generation method, apparatus, and system

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

- Number: US 2022/0286901 A1
- Document ID: US20220286901A1
- Status: Published application
- Kind: A1
- Application number: 17/826,991
- Filed: 2022-05-27
- Published: 2022-09-08
- Earliest claimed: 2019-11-29
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Haiyang SUN; Yan LI
- Web page: https://patentgrep.com/patent/US20220286901A1

## CPC

- 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)}
- H04L 65/1016: IP multimedia subsystem [IMS]
- H04L 65/1069: Session establishment or de-establishment
- H04L 65/80: Responding to QoS
- H04W 28/0231: {based on communication conditions (dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54)}
- H04W 80/10: adapted for {application} session management, e.g. SIP [Session Initiation Protocol] {(connection management H04W76/00; arrangements for session management H04L67/14)}
- 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

Embodiments of this application provide an uplink PDR generation method, an apparatus, and a system, to resolve a problem in a conventional technology that an uplink data packet may be discarded because a PCF network element may not include uplink SDF information when generating a PCC rule including an RQC indication. The method includes: A session management network element receives a first policy and charging control PCC rule from a policy control network element, where the first PCC rule includes downlink service data flow SDF information that corresponds to a first service. When the first PCC rule includes a reflective quality of service control RQC indication, the session management network element generates, according to the first PCC rule, a first uplink PDR that corresponds to the first service. The session management network element sends, to a user plane network element, the first uplink PDR that corresponds to the first service.

## Claims

### Claim 1

An uplink packet detection rule (PDR) generation method, wherein the method comprises:
receiving, by a session management network element, a first policy and charging control (PCC) rule from a policy control network element, wherein the first PCC rule comprises downlink service data flow (SDF) information that corresponds to a first service;
when the first PCC rule comprises a reflective quality of service control (RQC) indication, generating, by the session management network element according to the first PCC rule, a first uplink (PDR) that corresponds to the first service; and
sending, by the session management network element to a user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the first uplink PDR comprises a first packet filter set and a first quality of service flow identifier (QFI), wherein the first QFI is the same as a second QFI in a downlink PDR that corresponds to the first service, source information in the first packet filter set is the same as destination information in a second packet filter set in the downlink PDR, and destination information in the first packet filter set is the same as source information in the second packet filter set.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the method further comprises:
sending, by the session management network element to the user plane network element, a first usage reporting rule (URR) that corresponds to the downlink PDR that corresponds to the first service, wherein the first URR triggers the user plane network element to report a first event, and the first event is that a downlink data packet of the first service is detected according to the downlink PDR; and
the sending, by the session management network element to a user plane network element, the first uplink PDR that corresponds to the first service comprises:
when the session management network element receives the first event reported by the user plane network element, sending, by the session management network element to the user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 4 (depends on 3)

The method according to claim 3, wherein the method further comprises:
sending, by the session management network element to the user plane network element, a second URR that corresponds to the downlink PDR, wherein the second URR triggers the user plane network element to report a third event, and the third event is that no uplink data packet of the first service is detected according to the first uplink PDR; and
when the session management network element receives the third event reported by the user plane network element, notifying, by the session management network element, the user plane network element to delete the first uplink PDR.

### Claim 5 (depends on 2)

The method according to claim 2, wherein the method further comprises:
sending, by the session management network element to the user plane network element, a third URR that corresponds to a second uplink PDR, wherein the third URR triggers the user plane network element to report a second event, the second event is that an uplink data packet of the first service is detected according to the second uplink PDR, and the second uplink PDR is an uplink PDR that corresponds to the first service and that comprises the first packet filter set; and
the sending, by the session management network element to a user plane network element, the first uplink PDR that corresponds to the first service comprises:
when the session management network element receives the second event reported by the user plane network element, sending, by the session management network element to the user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 6 (depends on 5)

The method according to claim 5, wherein the method further comprises:
sending, by the session management network element to the user plane network element, a fourth URR that corresponds to the second uplink PDR, wherein the fourth URR triggers the user plane network element to report a third event, and the third event is that no uplink data packet of the first service is detected according to the first uplink PDR; and
when the session management network element receives the third event reported by the user plane network element, notifying, by the session management network element, the user plane network element to delete the first uplink PDR.

### Claim 7

A session management network element, comprising:
a memory storing executable instructions;
a processor configured to execute the executable instructions to perform operations of:
receiving a first policy and charging control (PCC) rule from a policy control network element, wherein the first PCC rule comprises downlink service data flow (SDF) information that corresponds to a first service;
generating, according to the first PCC rule when the first PCC rule comprises a reflective quality of service control (RQC) indication, a first uplink packet detection rule (PDR) that corresponds to the first service; and
sending, to a user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 8 (depends on 7)

The session management network element according to claim 7, wherein the first uplink PDR comprises a first packet filter set and a first quality of service flow identifier (QFI), wherein the first QFI is the same as a second QFI in a downlink PDR that corresponds to the first service, source information in the first packet filter set is the same as destination information in a second packet filter set in the downlink PDR, and destination information in the first packet filter set is the same as source information in the second packet filter set.

### Claim 9 (depends on 7)

The session management network element according to claim 7, wherein the operations further comprise:
sending, to the user plane network element, a first usage reporting rule URR that corresponds to the downlink PDR that corresponds to the first service, wherein the first URR triggers the user plane network element to report a first event, and the first event is that a downlink data packet of the first service is detected according to the downlink PDR; and
the operation of sending comprises: when receiving the first event reported by the user plane network element, sending, to the user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 10 (depends on 9)

The session management network element according to claim 9, wherein the operations further comprise:
sending, to the user plane network element, a second URR that corresponds to the downlink PDR, wherein the second URR triggers the user plane network element to report a third event, and the third event is that no uplink data packet of the first service is detected according to the first uplink PDR; and
notifying, when receiving the third event reported by the user plane network element, the user plane network element to delete the first uplink PDR.

### Claim 11 (depends on 8)

The session management network element according to claim 8, wherein the operations further comprise:
sending, to the user plane network element, a third URR that corresponds to a second uplink PDR, wherein the third URR triggers the user plane network element to report a second event, the second event is that an uplink data packet of the first service is detected according to the second uplink PDR, and the second uplink PDR is an uplink PDR that corresponds to the first service and that comprises the first packet filter set; and
the operation of sending comprises: when receiving the second event reported by the user plane network element, sending, to the user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 12

A communication system, wherein the communication system comprises a session management network element and a policy control network element, wherein
the policy control network element is configured to send a first policy and charging control (PCC) rule to the session management network element, wherein the first PCC rule comprises downlink service data flow (SDF) information that corresponds to a first service;
the session management network element is configured to: receive the first PCC rule from the policy control network element; and when the first PCC rule comprises reflective quality of service control (RQC) indication, generate, according to the first PCC rule, a first uplink PDR that corresponds to the first service; and
the session management network element is further configured to send, to a user plane network element, the first uplink (PDR) that corresponds to the first service.

### Claim 13 (depends on 12)

The communication system according to claim 12, wherein the first uplink PDR comprises a first packet filter set and a first quality of service flow identifier (QFI), wherein the first QFI is the same as a second QFI in a downlink PDR that corresponds to the first service, source information in the first packet filter set is the same as destination information in a second packet filter set in the downlink PDR, and destination information in the first packet filter set is the same as source information in the second packet filter set.

### Claim 14 (depends on 12)

The communication system according to claim 12, wherein the session management network element is further configured to:
send, to the user plane network element, a first usage reporting rule (URR) that corresponds to the downlink PDR that corresponds to the first service, wherein the first URR triggers the user plane network element to report a first event, and the first event is that a downlink data packet of the first service is detected according to the downlink PDR; and
when the session management network element receives the first event reported by the user plane network element, sending, to the user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 15 (depends on 14)

The communication system according to claim 14, wherein the session management network element is further configured to:
send, to the user plane network element, a second URR that corresponds to the downlink PDR, wherein the second URR triggers the user plane network element to report a third event, and the third event is that no uplink data packet of the first service is detected according to the first uplink PDR; and
when the session management network element receives the third event reported by the user plane network element, notifying, the user plane network element to delete the first uplink PDR.

### Claim 16 (depends on 13)

The communication system according to claim 13, wherein the session management network element is further configured to:
send, to the user plane network element, a third URR that corresponds to a second uplink PDR, wherein the third URR triggers the user plane network element to report a second event, the second event is that an uplink data packet of the first service is detected according to the second uplink PDR, and the second uplink PDR is an uplink PDR that corresponds to the first service and that comprises the first packet filter set; and
when the session management network element receives the second event reported by the user plane network element, sending, to the user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 17

An uplink packet detection rule (PDR) generation method, comprising:
sending, by a policy control network element, a first policy and charging control (PCC) rule to a session management network element, wherein the first PCC rule comprises downlink service data flow (SDF) information that corresponds to a first service;
receiving, by the session management network element, a first policy and charging control (PCC) rule from the policy control network element;
when the first PCC rule comprises a reflective quality of service control (RQC) indication, generating, by the session management network element according to the first PCC rule, a first uplink (PDR) that corresponds to the first service; and
sending, by the session management network element to a user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 18 (depends on 17)

The method according to claim 17, wherein the first uplink PDR comprises a first packet filter set and a first quality of service flow identifier (QFI), wherein the first QFI is the same as a second QFI in a downlink PDR that corresponds to the first service, source information in the first packet filter set is the same as destination information in a second packet filter set in the downlink PDR, and destination information in the first packet filter set is the same as source information in the second packet filter set.

### Claim 19 (depends on 17)

The method according to claim 17, wherein the method further comprises:
sending, by the session management network element to the user plane network element, a first usage reporting rule (URR) that corresponds to the downlink PDR that corresponds to the first service, wherein the first URR triggers the user plane network element to report a first event, and the first event is that a downlink data packet of the first service is detected according to the downlink PDR; and
receiving, by the user plane network element, the first URR; and
the sending, by the session management network element to a user plane network element, the first uplink PDR that corresponds to the first service comprises:
when the session management network element receives the first event reported by the user plane network element, sending, by the session management network element to the user plane network element, the first uplink PDR that corresponds to the first service.

### Claim 20 (depends on 18)

The method according to claim 18, wherein the method further comprises:
sending, by the session management network element to the user plane network element, a third URR that corresponds to a second uplink PDR, wherein the third URR triggers the user plane network element to report a second event, the second event is that an uplink data packet of the first service is detected according to the second uplink PDR, and the second uplink PDR is an uplink PDR that corresponds to the first service and that comprises the first packet filter set; and
receiving, by the user plane network element, the third URR; and
the sending, by the session management network element to a user plane network element, the first uplink PDR that corresponds to the first service comprises:
when the session management network element receives the second event reported by the user plane network element, sending, by the session management network element to the user plane network element, the first uplink PDR that corresponds to the first service.