Apparatus, system and method of relay backhauling with millimeter wave carrier aggregation
Some demonstrative embodiments include devices, systems and methods of relay backhauling with millimeter wave carrier aggregation. For example, a first Relay Node (RN) may include a cellular transceiver configured to communicate with a Donor evolved Node B (DeNB) over a cellular frequency band of a Primary cell (PCell); a millimeter-wave (mmWave) transceiver to communicate with a second RN via a backhaul link over a mmWave frequency band of a Secondary cell (SCell) within the PCell; and a controller to process a Relay-Physical-Downlink-Control-Channel (R-PDCCH) message received by the cellular transceiver over the cellular frequency band of the PCell, the R-PD-CCH message including cross-carrier scheduling information to schedule a downlink allocation over the backhaul link, the controller to trigger the mmWave transceiver to receive a downlink data packet from the second RN during the downlink allocation.
1. A first Relay Node (RN) comprising:
a cellular transceiver configured to communicate with a Donor evolved Node B (DeNB) over a cellular frequency band of a Primary cell (PCell), the cellular frequency band comprising a non-millimeter wave (non-mmWave) frequency band below 6 Gigahertz (GHz);
a millimeter-wave (mmWave) transceiver to communicate with a second RN via a backhaul link over an mmWave frequency band of a Secondary cell (SCell) within the PCell; and
a controller to configure, according to a Radio Resource Control (RRC) message from the DeNB, a setting of a primary Relay-Physical-Downlink-Control-Channel (R-PDCCH) set with the DeNB and a secondary R-PDCCH set with the second RN, wherein the controller is configured to process a primary R-PDCCH message from the DeNB and a secondary R-PDCCH message received by the cellular transceiver over the cellular frequency band of the PCell, the primary R-PDCCH message from the DeNB to schedule an allocation over the cellular frequency band, the secondary R-PDCCH message to be received by the first RN from said second RN over the cellular frequency band, the secondary R-PDCCH message comprising cross-carrier scheduling information to schedule a downlink allocation over the backhaul link, said controller to trigger the mmWave transceiver to receive a downlink data packet from said second RN during the downlink allocation.
2. The first RN of claim 1 , wherein said controller is configured to handover the first RN to the second RN based on a handover request from the DeNB.
3. The first RN of claim 1 , wherein said controller is to handover the first RN from the DeNB to the second RN based on a handover request from the DeNB, and to receive the secondary R-PDCCH message from said second RN after the handover to the second RN.
4. The first RN of claim 1 comprising one or more antennas, a memory and a processor.
5. An evolved Node B (eNB) comprising:
a cellular transceiver configured to communicate with a first Relay Node (RN) and a second RN over a cellular frequency band of a Primary cell (PCell);
a millimeter-wave (mmWave) transceiver to communicate with the second RN via a first backhaul link over an mmWave frequency band; and
a controller to trigger the cellular transceiver to transmit to the second RN a first Relay-Physical-Downlink-Control-Channel (R-PDCCH) message during a first Transmit Time Interval (TTI), the first R-PDCCH message to schedule uplink transmission of a data packet from the second RN to the first RN over a second backhaul link between the first RN and the second RN during a second TTI subsequent to the first TTI, said controller is to trigger the cellular transceiver to transmit to the first RN a second R-PDCCH message during the second TTI, the second R-PDCCH message comprising cross-carrier scheduling information to schedule a downlink allocation over the second backhaul link, the second R-PDCCH message to schedule downlink reception of the data packet from the second RN at the first RN.
6. The eNB of claim 5 , wherein the controller is to trigger the mmWave transceiver to send to the second RN via the first backhaul link the data packet to be relayed to the first RN via the second backhaul link.
7. The eNB of claim 5 configured to operate as a Donor eNB (DeNB) of the PCell.
8. The eNB of claim 5 comprising one or more antennas, a memory and a processor.
9. A product comprising one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one processor, enable the at least one processor to cause a first Relay Node (RN) to:
configure, according to a Radio Resource Control (RRC) message from a Donor evolved Node B (DeNB), a setting of a primary Relay-Physical-Downlink-Control-Channel (R-PDCCH) set with the DeNB and a secondary R-PDCCH set with a second RN, the RRC message to be received from the DeNB over a cellular frequency band of a Primary cell (PCell), the cellular frequency band comprising a non-millimeter wave (non-mmWave) frequency band below 6 Gigahertz (GHz);
process a primary R-PDCCH message from the DeNB to schedule an allocation over the cellular frequency band;
process a secondary R-PDCCH message received from the second RN over the cellular frequency band, the secondary R-PDCCH message comprising cross-carrier scheduling information to schedule a downlink allocation over a backhaul link between the first RN and the second RN, the backhaul link over a millimeter-wave (mmWave) frequency band of a Secondary cell (SCell) within the PCell; and
receive a downlink data packet from said second RN during the downlink allocation.
10. The product of claim 9 , wherein the instructions, when executed, cause the first RN to handover the first RN to the second RN based on a handover request from the DeNB.
11. The product of claim 9 , wherein the instructions, when executed, cause the first RN to handover the first RN from the DeNB to the second RN based on a handover request from the DeNB, and to receive the secondary R-PDCCH message from said second RN after the handover to the second RN.
12. A product comprising one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one processor, enable the at least one processor to cause an evolved Node B (eNB) to:
communicate with a first Relay Node (RN) and a second RN over a cellular frequency band of a Primary cell (PCell;
communicate with the second RN via a first backhaul link over a millimeter-wave (mmWave) frequency band;
transmit to the second RN a first Relay-Physical-Downlink-Control-Channel (R-PDCCH) message during a first Transmit Time Interval (TTI), the first R-PDCCH message to schedule uplink transmission of a data packet from the second RN to the first RN over a second backhaul link between the first RN and the second RN during a second TTI subsequent to the first TTI; and
transmit to the first RN a second R-PDCCH message during the second TTI, the second R-PDCCH message comprising cross-carrier scheduling information to schedule a downlink allocation over the second backhaul link, the second R-PDCCH message to schedule downlink reception of the data packet from the second RN at the first RN.
13. The product of claim 12 , wherein the instructions, when executed, cause the eNB to send to the second RN via the first backhaul the data packet to be relayed to the first RN via the second backhaul link.
14. The product of claim 12 , wherein the instructions, when executed, cause the eNB to operate as a Donor eNB (DeNB) of the PCell.