Methods and apparatus for dual connectivity operation in a wireless communication network
First Claim
Patent Images
1. A method, comprising:
- configuring a user equipment (UE) for reception of waveforms from more than one base station (eNB); and
communicating using the user equipment (UE) in a cellular network utilizing radio resources provided by two distinct schedulers located in two eNBs connected via non-ideal backhaul wherein the UE communicates with one eNB designated as a master eNB (MeNB) and one eNB designated as a secondary eNB (SeNB), wherein the UE is configured to receive a Physical Downlink Shared Channel (PDSCH) from both the MeNB and the SeNB;
configuring the UE with a first physical uplink control channel (PUCCH) resource associated with a primary serving cell (PCell), the PCell being associated with the MeNB;
configuring the UE with a second PUCCH resource associated with a secondary serving cell (SCell), the SCell associated with the SeNB;
configuring the UE to monitor an enhanced downlink physical control channel (EPDCCH) on the PCell during a first set of subframes;
configuring the UE to monitor an EPDCCH on the SCell during a second set of subframes, the second set of subframes being different than the first set of subframes; and
transmitting a scheduling request on the PCell or the SCell using one of the first and second PUCCH resources.
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Abstract
Dual-connectivity for the User Equipment (UE) in a cellular network is performed by monitoring a plurality of cells. During dual-connectivity, the UE may be simultaneously connected to one serving cell for the Control Plane (C-plane) and to another serving cell, controlled by a different eNodeB, for the User Plane (U-plane). In another embodiment, the dual-connected UE monitors a Physical Downlink Control Channel (PDCCH) from the first eNB and monitors an EPDCCH from the second eNB.
34 Citations
22 Claims
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1. A method, comprising:
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configuring a user equipment (UE) for reception of waveforms from more than one base station (eNB); and communicating using the user equipment (UE) in a cellular network utilizing radio resources provided by two distinct schedulers located in two eNBs connected via non-ideal backhaul wherein the UE communicates with one eNB designated as a master eNB (MeNB) and one eNB designated as a secondary eNB (SeNB), wherein the UE is configured to receive a Physical Downlink Shared Channel (PDSCH) from both the MeNB and the SeNB; configuring the UE with a first physical uplink control channel (PUCCH) resource associated with a primary serving cell (PCell), the PCell being associated with the MeNB; configuring the UE with a second PUCCH resource associated with a secondary serving cell (SCell), the SCell associated with the SeNB; configuring the UE to monitor an enhanced downlink physical control channel (EPDCCH) on the PCell during a first set of subframes; configuring the UE to monitor an EPDCCH on the SCell during a second set of subframes, the second set of subframes being different than the first set of subframes; and transmitting a scheduling request on the PCell or the SCell using one of the first and second PUCCH resources. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating a UE, comprising:
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configuring the user equipment (UE) for reception of waveforms from, or transmission of waveforms to, more than one base station (eNB); communicating with serving cells in a master cell group (MCG) and a secondary cell group (SCG) wherein the MCG contains the serving cells of the master eNB (MeNB) and the SCG contains the serving cells of the secondary eNB (SeNB), wherein the UE is configured to receive a Physical Downlink Shared Channel (PDSCH) from both the MeNB and the SeNB; configuring the UE with a first physical uplink control channel (PUCCH) resource associated with a primary serving cell (PCell), the PCell being associated with the MeNB; configuring the UE with a second PUCCH resource associated with a secondary serving cell (SCell), the SCell associated with the SeNB; configuring the UE to monitor an enhanced downlink physical control channel (EPDCCH) on the PCell during a first set of subframes; configuring the UE to monitor an EPDCCH on the SCell during a second set of subframes, the second set of subframes being different than the first set of subframes; and transmitting a scheduling request on the PCell or the SCell using one of the first and second PUCCH resources. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A user equipment (UE) apparatus, comprising circuitry configured to:
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receive waveforms from, or transmit waveforms to, more than one base station (eNB); and communicate in a cellular network utilizing radio resources provided by two distinct schedulers located in two eNBs connected via non-ideal backhaul wherein the UE communicates with one eNB designated as a master eNB (MeNB) and one eNB designated as a secondary eNB (SeNB), wherein the UE is configured to receive a Physical Downlink Shared Channel (PDSCH) from both the MeNB and the SeNB; configure the UE with a first physical uplink control channel (PUCCH) resource associated with a primary serving cell (PCell), the PCell being associated with the MeNB; configure the UE with a second PUCCH resource associated with a secondary serving cell (SCell), the SCell associated with the SeNB; configure the UE to monitor an enhanced downlink physical control channel (EPDCCH) on the PCell during a first set of subframes; configure the UE to monitor an EPDCCH on the SCell during a second set of subframes, the second set of subframes being different than the first set of subframes; and transmit a scheduling request on the PCell or the SCell using one of the first and second PUCCH resources. - View Dependent Claims (13, 14, 15, 16)
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17. A user equipment (UE) apparatus, comprising circuitry configured to:
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receive waveforms from, or transmit waveforms to, more than one base station (eNB); and communicate with serving cells in a master cell group (MCG) and a secondary cell group (SCG) wherein the MCG contains the serving cells of the master eNB (MeNB) and the SCG contains the serving cells of the secondary eNB (SeNB), wherein the UE is configured to receive a Physical Downlink Shared Channel (PDSCH) from both the MeNB and the SeNB; configure the UE with a first physical uplink control channel (PUCCH) resource associated with a primary serving cell (PCell), the PCell being associated with the MeNB; configure the UE with a second PUCCH resource associated with a secondary serving cell (SCell), the SCell associated with the SeNB; configure the UE to monitor an enhanced downlink physical control channel (EPDCCH) on the PCell during a first set of subframes; configure the UE to monitor an EPDCCH on the SCell during a second set of subframes, the second set of subframes being different than the first set of subframes; and transmit a scheduling request on the PCell or the SCell using one of the first and second PUCCH resources. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification