Communication system

Patent metadata

Field	Value
Publication number	US-11991694-B2
Application number	US-201917258343-A
Country	US
Kind code	B2
Filing date	Jul 8, 2019
Priority date	Jul 10, 2018
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

A communication system is described in which a base station transmits, to a UE (user equipment), via a data radio bearer (DRB), a downlink data packet that includes information identifying a data flow. The downlink data packet is transmitted prior to commencement of transmission, via that DRB, of data packets comprising any downlink user-plane data associated with the identified data flow.

First claim

What is claimed is:

1. A method performed by a user plane entity of a distributed base station, the method comprising:
receiving, from a user equipment (UE), an uplink data packet corresponding to a data flow, the uplink data packet comprising a specific Quality of Service (QoS) Flow Identifier (QFI);
determining that the QFI in the uplink data packed is not configured;
transmitting, to a control plane entity of the distributed base station, information indicating that the QFI in the uplink data packed is not configured; and
transmitting, to the UE via a data radio bearer (DRB), a downlink data packet corresponding to the data flow, the downlink data packet comprising one octet header information comprising a Reflective QoS flow to DRB mapping Indication (RDI), a Reflective QoS Indication (RQI), and the QFI;
wherein the RDI causes the UE to update mapping between the data flow and the DRB, and
wherein the information indicating that the QFI in the uplink data packed is not configured comprises a list including at least one combination of a Protocol Data Unit (PDU) session Identifier (ID) and a QoS Flow List.

2. A user plane entity of a distributed base station, comprising:
a transceiver; and
a controller, wherein the controller is configured to:
control the transceiver to receive, from a user equipment (UE), an uplink data packet corresponding to a data flow, the uplink data packet comprising a specific Quality of Service (QoS) Flow Identifier (QFI);
determine that the QFI in the uplink data packet is not configured;
control the transceiver to transmit, to a control plane entity of the distributed base station, information indicating that the QFI in the uplink data packet is not configured; and
control the transceiver to transmit, to the UE via a data radio bearer (DRB), a downlink data packed corresponding to the data flow, the downlink data packet comprising one octet header information comprising a Reflective QoS flow to DRB mapping Indication (RDI), a Reflective QoS Indication (RQI), and the QFI;
wherein the RDI causes the UE to update mapping between the data flow and the DRB, and
wherein the information indicating that the QFI in the uplink data packed is not configured comprises a list including at least one combination of a Protocol Data Unit (PDU) session Identifier (ID) and a QoS Flow List.

3. A method performed by a user equipment (UE), the method comprising:
transmitting, to a user plane entity of a distributed base station, an uplink data packet corresponding to a data flow, the uplink data packet comprising a specific Quality of Service (QoS) Flow Indicator (QFI);
in a case in which the user plane entity of the distributed base station determines that the QFI in the uplink data packed is not configured, receiving, from the user plane entity of the distributed base station via a data radio bearer (DRB), a downlink data packet corresponding to the data flow, the downlink data packet comprising one octet header information comprising a Reflective QoS flow to DRB mapping Indication (RDI), a Reflective QoS Indication (RQI), and the QFI; and
updating mapping between the data flow and the DRB based on the RDI;
wherein the information indicating that the QFI in the uplink data packed is not configured comprises a list including at least one combination of a Protocol Data Unit (PDU) session Identifier (ID) and a QoS Flow List.

4. A user equipment (UE) comprising:
a transceiver; and
a controller, wherein the controller is configured to:
control the transceiver to transmit, to a user plane entity of a distributed base station, an uplink data packet corresponding to a data flow, the uplink data packet comprising a specific Quality of Service (QoS) Flow Identifier (QFI);
control the transceiver to receive, from the user plane entity of the distributed base station via a data radio bearer (DRB), a downlink data packed corresponding to the data flow, the downlink data packet comprising one octet header information comprising a Reflective QoS flow to DRB mapping Indication (RDI), a Reflective QoS Indication (RQI), and the QFI, in a case in which the user plane entity of the distributed base station determines that the QFI in the uplink data packet is not configured; and
update mapping between the data flow and the DRB based on the RDI,
wherein the information indicating that the QFI in the uplink data packed is not configured comprises a list including at least one combination of a Protocol Data Unit (PDU) session Identifier (ID) and a QoS Flow List.

Assignees

• Nec Corp

Inventors

• Chen Yuhua
• Gupta Neeraj
• Singh Jagdeep Ahluwalia

Classifications

• H04W72/1273 Primary

  of downlink data flows · CPC title

• H04W72/543

  based on requested quality, e.g. QoS · CPC title

• H04W28/0263 Primary

  involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT] · CPC title

• H04W28/0268

  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) · CPC title

• H04W76/22

  Manipulation of transport tunnels · CPC title