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US 12,615,533 B2Granted
Latency management in integrated access and backhaul networks
AssigneeZte Corporation
InventorsLin Chen, Ying Huang, Liping Wang, Hao Zhu, Xueying Diao
Life of this patent
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Abstract
Methods, systems, and devices for latency management in integrated access and backhaul (IAB) networks for mobile communications are described. An example method for wireless communication includes receiving, by a first network node from a second network node, a measurement configuration, performing, based on the measurement configuration, one or more latency measurements, and transmitting, to the second network node, a measurement report comprising the one or more latency measurements or an identification of the channel used for the one or more latency measurements.
Claims12
A method for wireless communication comprising:
- receiving, by a first network node from a second network node, a measurement configuration, wherein the first network node comprises an Integrated Access and Backhaul (IAB) node, an IAB Mobile Termination (IAB MT), an IAB distributed unit (IAB DU), or a donor distributed unit (donor DU), and wherein the second network node comprises a donor centralized unit (CU) or a base station (BS);
- performing, based on the measurement configuration, one or more latency measurements;
- transmitting, to the second network node, a measurement report comprising the one or more latency measurements or an identification of a channel used for the one or more latency measurements;
- receiving routing information from the second network node, wherein the routing information comprises one or more of a routing identification (ID), a bearer ID, a next hop Backhaul Adaptation Protocol (BAP) address, an expected latency, a hop count, or a per-hop latency;
- receiving a data packet that is destined for a third network node;
- determining, based on the expected latency, the hop count, or the per-hop latency, whether a remaining value of a packet delay budget (PDB) is sufficient to use a selected routing path towards the third network node;
- and
- (1) transmitting the data packet on the selected routing path upon a determination the remaining value of the PDB is satisfied by the selected routing path;
- or
- (2) selecting a new routing path upon a determination that the remaining value of the PDB is not satisfied by the selected routing path, and transmitting the data packet on the new routing path, wherein the new routing path comprises a destination Backhaul Adaptation Protocol (BAP) address identical to that of the selected routing path, and wherein an expected latency of the new routing path is less than or equal to the remaining value of the PDB.
7 more elements
A method of wireless communication comprising:
- transmitting, by a second network node to a first network node, a measurement configuration wherein the first network node comprises an Integrated Access and Backhaul (IAB) node, an IAB Mobile Termination (IAB MT), an IAB distributed unit (IAB DU), or a donor distributed unit (donor DU), and wherein the second network node comprises a donor centralized unit (CU) or a base station (BS);
- receiving, subsequent to the transmitting, a measurement report comprising one or more latency measurements or an identification of a channel used for the one or more latency measurements;
- and
- transmitting routing information from the second network node to the first network node, wherein the routing information comprises one or more of a routing identification (ID), a bearer ID, a next hop Backhaul Adaptation Protocol (BAP) address, an expected latency, a hop count, or a per-hop latency, and wherein the first network node is configured to:
- receive a data packet that is destined for a third network node;
- determine, based on the expected latency, the hop count, or the per-hop latency, whether a remaining value of a packet delay budget (PDB) is sufficient to use a selected routing path towards the third network node;
- and
- (1) transmit the data packet on the selected routing path upon a determination the remaining value of the PDB is satisfied by the selected routing path;
- or
- (2) select a new routing path upon a determination that the remaining value of the PDB is not satisfied by the selected routing path, and transmit the data packet on the new routing path, wherein the new routing path comprises a destination Backhaul Adaptation Protocol (BAP) address identical to that of the selected routing path, and wherein an expected latency of the new routing path is less than or equal to the remaining value of the PDB.
7 more elements
A wireless communication apparatus comprising processor electronics and a memory storing instructions, execution of which by the processor electronics causes the apparatus to perform operations comprising:
- receiving, by the apparatus from a network node, a measurement configuration, wherein the apparatus comprises an Integrated Access and Backhaul (IAB) node, an IAB Mobile Termination (IAB MT), an IAB distributed unit (IAB DU), or a donor distributed unit (donor DU), and wherein the network node comprises a donor centralized unit (CU) or a base station (BS);
- performing, based on the measurement configuration, one or more latency measurements;
- transmitting, to the network node, a measurement report comprising the one or more latency measurements or an identification of a channel used for the one or more latency measurements;
- receiving routing information from the network node, wherein the routing information comprises one or more of a routing identification (ID), a bearer ID, a next hop Backhaul Adaptation Protocol (BAP) address, an expected latency, a hop count, or a per-hop latency;
- receiving a data packet that is destined for a second network node;
- determining, based on the expected latency, the hop count, or the per-hop latency, whether a remaining value of a packet delay budget (PDB) is sufficient to use a selected routing path towards the second network node;
- and
- (1) transmitting the data packet on the selected routing path upon a determination the remaining value of the PDB is satisfied by the selected routing path;
- or
- (2) selecting a new routing path upon a determination that the remaining value of the PDB is not satisfied by the selected routing path, and transmitting the data packet on the new routing path, wherein the new routing path comprises a destination Backhaul Adaptation Protocol (BAP) address identical to that of the selected routing path, and wherein an expected latency of the new routing path is less than or equal to the remaining value of the PDB.
7 more elements
A wireless communication apparatus comprising processor electronics and a memory storing instructions, execution of which by the processor electronics causes the apparatus to perform operations comprising:
- transmitting, to a network node, a measurement configuration wherein the network node comprises an Integrated Access and Backhaul (IAB) node, an IAB Mobile Termination (IAB MT), an IAB distributed unit (IAB DU), or a donor distributed unit (donor DU), and wherein the apparatus comprises a donor centralized unit (CU) or a base station (BS);
- receiving, subsequent to the transmitting, a measurement report comprising one or more latency measurements or an identification of a channel used for the one or more latency measurements;
- and
- transmitting routing information from the apparatus to the network node, wherein the routing information comprises one or more of a routing identification (ID), a bearer ID, a next hop Backhaul Adaptation Protocol (BAP) address, an expected latency, a hop count, or a per-hop latency, and wherein the network node is configured to:
- receive a data packet that is destined for a second network node;
- determine, based on the expected latency, the hop count, or the per-hop latency, whether a remaining value of a packet delay budget (PDB) is sufficient to use a selected routing path towards the second network node;
- and
- (1) transmit the data packet on the selected routing path upon a determination the remaining value of the PDB is satisfied by the selected routing path;
- or
- (2) select a new routing path upon a determination that the remaining value of the PDB is not satisfied by the selected routing path, and transmit the data packet on the new routing path, wherein the new routing path comprises a destination Backhaul Adaptation Protocol (BAP) address identical to that of the selected routing path, and wherein an expected latency of the new routing path is less than or equal to the remaining value of the PDB.
7 more elements
Dependencies are inferred from the claim text.