Full duplex resource reuse enablement

• US 10,110,264 B2
• Filed: 09/13/2013
• Issued: 10/23/2018
• Est. Priority Date: 09/13/2013
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Buckley, Michael Eoin, Ali, Shirook M.
• Primary Examiner(s): Renner, Brandon
• Assistant Examiner(s): Ajid, Abdeltif
• Application Number:
  US14/027,004
• Publication Number:
  US 20150078212A1
• Time in Patent Office: 1,866 Days
• Field of Search: 370252, 370277
• CPC Class Codes: H04B 1/1027 assessing signal quality or detecting noise/interference for the received signal
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/54 based on quality criteria
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

Systems and apparatuses involve implementing methods that may include receiving, by enhanced user equipment (eUE), an assignment of Resource Blocks (RBs) from an eNodeB (eNB), wherein the eUE is configured to receive full-duplex transmissions; for each assigned RB, measuring interference caused by uplink transmissions from one or more legacy UEs; and reporting, to the eNB, the measured interference. The present implementations may provide an eUE-based approach, an eUE and eNB interactive approach, an eUE baseband approach, and an eUE analog approach to reducing interference for full duplex enabled mobile devices.

Claims

1. A method of mitigating interference, the method comprising:

receiving, by an enhanced User Equipment (eUE), uplink transmissions including pilot sequences from one or more interfering legacy UEs, wherein the pilot sequences for the one or more interfering legacy UEs are different from a specific sequence assigned to the eUE, wherein the eUE operates in an enhanced full-duplex mode with an eNode B (eNB), the enhanced full-duplex mode with the eNB includes the eUE using a same time and frequency resource for a first uplink signal and a first downlink signal with the eNB, and the one or more interfering legacy UEs use the same time and frequency resource for the uplink transmissions;

blindly decoding the uplink transmissions to determine the pilot sequences assigned to the one or more interfering legacy UEs;

determining, by the eUE, interference to the first downlink signal between the eNB and the eUE using the pilot sequences for the one or more interfering legacy UEs;

identifying, by the eUE, an identity of at least one interfering legacy UEs of the one or more interfering legacy UEs based on the pilot sequence of the at least one interfering legacy UE in the received uplink transmissions; and

reporting the interference with the first downlink signal and an identifier of the identified at least one interfering legacy UE to the eNB.

2. The method of claim 1, further comprising receiving, from the eNB, information identifying a same pilot sequence is assigned to the one or more interfering legacy UEs or different pilot sequences assigned to the one or more interfering legacy UEs.

3. The method of claim 1, further comprising reporting, to the eNB, interference power for uplink transmissions from the one or more interfering legacy UEs.

4. A device for mitigating interference, comprising:

one or more processors configured to;

receive, by an enhanced User Equipment (eUE), uplink transmissions including pilot sequences from one or more interfering legacy UEs, wherein the pilot sequences for the one or more interfering legacy UEs are different from a specific sequence assigned to the eUE, wherein the eUE operates in an enhanced full-duplex mode with an eNode B (eNB), the enhanced full-duplex mode with the eNB includes the eUE using a same time and frequency resource for a first uplink signal and a first downlink signal with the eNB, and the one or more interfering legacy UEs use the same time and frequency resource for the uplink transmissions;

blindly decode the uplink transmissions to determine the pilot sequences assigned to the one or more interfering legacy UEs;

determine, by the eUE, interference to the first downlink signal between the eNB and the eUE using the pilot sequences for the one or more interfering legacy UEs;

identify, by the eUE, an identity of at least one interfering legacy UE of the one or more interfering legacy UEs based on the pilot sequence of the at least one interfering legacy UE in the received uplink transmissions; and

report the interference with the first downlink signal and an identifier of the identified at least one interfering legacy UE to the eNB.

5. The device of claim 4, the one or more processors configured to receive, from the eNB, information identifying a same pilot sequence is assigned to the one or more interfering legacy UEs or different pilot sequences assigned to the one or more interfering legacy UEs.

6. The device of claim 4, the one or more processors configured to report, to the eNB, interference power for uplink transmissions from the one or more interfering legacy UEs.