Radio interface protocol architecture aspects, quality of service (QoS), and logical channel prioritization for 5G new radio
Disclosed herein are new radio (NR) Data link architecture options including, for example, NR radio bearer models, NR logical channel models, and MAC and HARQ models. Further described are packet flows mapping to data radio bearers (DRBs), and a new flow encapsulation protocol in the user plane. In some embodiments, DRBs with different quality of service (QoS) are pre-established, but not activated. This allows a given user equipment (UE) to use these DRBs for packet data network (PDN) flows without a large overhead. Pre-established DRBs can be an extension to default bearer concept with the decision of pre-establishment of DRBs based on UE capability, subscription profile, operation policy, installed apps, etc.
1. An apparatus comprising a processor, a memory, and communication circuitry, the apparatus comprising a plurality of logical channels configured to connect to a network via the communication circuitry, the apparatus further comprising computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform operations comprising:
receiving a data radio bearer (DRB) configuration, wherein a DRB configured by the DRB configuration are mapped to a quality of service (QoS) flow in a first layer;
receiving a resource configuration indicating one or more restrictions of logical channels for an uplink grant;
preparing a first data packet having a header comprising a first QoS flow identifier (ID) as a packet marking in the first layer, the first QoS flow ID being set according to the QoS flow mapped to the DRB, wherein the first layer is higher than a PDCP layer;
transmitting the first data packet over a first logical channel, wherein the first logical channel is selected based on the one or more restrictions of logical channel in a second layer being higher than the first layer;
receiving a second data packet having a header comprising a second QoS flow ID as a packet marking in the first layer;
preparing a third data packet having a header comprising a third QoS flow ID as a packet marking in the first layer, the third QoS flow ID being set according to the second QoS flow ID; and
transmitting the third data packet over a second logical channel, wherein the second logical channel is selected based on the one or more restrictions of logical channel in the second layer.
2. The apparatus as recited in claim 1 , wherein the resource configuration comprises at least one of a numerology restriction of logical channels with respect to subcarrier spacing (SCS), a duplication restriction of logical channels with respect to one or more component carrier (CC) and a lifetime restriction associated with a logical channel of the uplink grant,
wherein the duplication restriction is for restricting a logical channel associated with one or more of the DRBs having duplication in the PDCP layer.
3. The apparatus as recited in claim 1 , wherein the first data packet is transmitted to the network in uplink communications or to another apparatus in device-to-device communications.
4. An apparatus comprising a processor, a memory, and communication circuitry, the apparatus comprising a plurality of logical channels configured to connect to a network via the communication circuitry, the apparatus further comprising computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform operations comprising:
transmitting a data radio bearer (DRB) configuration, wherein a DRB configured by the DRB configuration are mapped to a quality of service (QoS) flow in a first layer;
transmitting a resource configuration indicating one or more restrictions of logical channels for an uplink grant;
receiving, over a first logical channel, a first data packet having a header comprising a first QoS flow identifier (ID) as a packet marking in the first layer, the first QoS flow ID being set according to the QoS flow mapped to the DRB, wherein the first layer is higher than a PDCP layer, and
wherein the first logical channel is selected based on the one or more restrictions of logical channel in a second layer being higher than the first layer;
transmitting a second data packet having a header comprising a second QoS flow ID as a packet marking in the first layer; and
receiving, over a second logical channel, a third data packet having a header comprising a third QoS flow ID as a packet marking in the first layer, the third QoS flow ID being set according to the second QoS flow ID,
wherein the second logical channel is selected based on the one or more restrictions of logical channel in the second layer.
5. The apparatus as recited in claim 4 , wherein the resource configuration comprises at least one of a numerology restriction of logical channels with respect to subcarrier spacing (SCS), a duplication restriction of logical channels with respect to one or more component carrier (CC) and a lifetime restriction associated with a logical channel of the uplink grant,
wherein the duplication restriction is for restricting a logical channel associated with one or more of the DRBs having duplication in the PDCP layer.
6. The apparatus as recited in claim 4 , wherein the first data packet is transmitted to the network in uplink communications or to another apparatus in device-to-device communications.
7. A method for a network system, the method comprising:
transmitting a data radio bearer (DRB) configuration, wherein a DRB configured by the DRB configuration are mapped to a quality of service (QoS) flow in a first layer;
transmitting a resource configuration indicating one or more restrictions of logical channels for an uplink grant; and
receiving, over a first logical channel, a first data packet having a header comprising a first QoS flow identifier (ID) as a packet marking in the first layer, the first QoS flow ID being set according to the QoS flow mapped to the DRB, wherein the first layer is higher than a PDCP layer, and
wherein the first logical channel is selected based on the one or more restrictions of logical channel in a second layer being higher than the first layer;
transmitting a second data packet having a header comprising a second QoS flow ID as a packet marking in the first layer; and
receiving, over a second logical channel, a third data packet having a header comprising a third QoS flow ID as a packet marking in the first layer, the third QoS flow ID being set according to the second QoS flow ID,
wherein the second logical channel is selected based on the one or more restrictions of logical channel in the second layer.
8. The method as recited in claim 7 , wherein the resource configuration comprises at least one of a numerology restriction of logical channels with respect to subcarrier spacing (SCS), a duplication restriction of logical channels with respect to one or more component carrier (CC) and a lifetime restriction associated with a logical channel of the uplink grant,
wherein the duplication restriction is for restricting a logical channel associated with one or more of the DRBs having duplication in the PDCP layer.
9. The method as recited in claim 7 , wherein the first data packet is transmitted to the network in uplink communications or to another apparatus in device-to-device communications.