Interference management for adaptive TDD with frequency domain separations

• US 9,768,943 B2
• Filed: 02/24/2016
• Issued: 09/19/2017
• Est. Priority Date: 05/11/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Xu, Hao, Chen, Wanshi, Gaal, Peter, Geirhofer, Stefan
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): MAGLO, EMMANUEL K
• Application Number:
  US15/052,821
• Publication Number:
  US 20160173264A1
• Time in Patent Office: 573 Days
• Field of Search: 370280
• CPC Class Codes: H01J 1/02 Main electrodes
• CPC Class Codes: H04J 1/02 Details
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A method of wireless communications includes adapting to downlink/uplink resource allocations. In particular, the downlink/uplink communications may be adjusted according to time division duplexed (TDD) configurations of serving and neighbor cells.

Claims

1. A method of wireless communication within a carrier aggregation configuration, comprising:

frequency division multiplexing uplink transmissions and downlink transmissions within a component carrier from a plurality of component carriers in a time division duplexed (TDD) network, the uplink transmissions and the downlink transmissions spatially multiplexed so that the uplink transmissions and the downlink transmissions are transmitted on a same carrier and are allocated to different frequency regions of the same carrier, the uplink transmissions allocated to upper edge frequencies and lower edge frequencies, the downlink transmissions allocated to middle frequencies, a guard band allocated between an uplink region and a downlink region, and the downlink transmissions do not use at least a first symbol in a subframe.

2. The method of claim 1, in which the uplink transmissions do not use at least one of a first set of symbols in the subframe.

3. An apparatus for wireless communication, comprising:

a memory; and

at least one processor coupled to the memory, the at least one processor configured;

to frequency division multiplex uplink transmissions and downlink transmissions within a component carrier from a plurality of component carriers in a time division duplexed (TDD) network, the uplink transmissions and the downlink transmissions spatially multiplexed so that the uplink transmissions and the downlink transmissions are transmitted on a same carrier and are allocated to different frequency regions of the same carrier, the uplink transmissions allocated to upper edge frequencies and lower edge frequencies, the downlink transmissions allocated to middle frequencies, a guard band allocated between an uplink region and a downlink region, and the downlink transmissions do not use at least a first symbol in a subframe.

4. The apparatus of claim 3, in which the uplink transmissions do not use at least one of a first set of symbols in the subframe.

5. A non-transitory computer-readable medium having non-transitory program code recorded thereon for wireless communication in a wireless network, the program code comprising:

program code to frequency division multiplex uplink transmissions and downlink transmissions within a component carrier from a plurality of component carriers in a time division duplexed (TDD) network, the uplink transmissions and the downlink transmissions spatially multiplexed so that the uplink transmissions and the downlink transmissions are transmitted on a same carrier and are allocated to different frequency regions of the same carrier, the uplink transmissions allocated to upper edge frequencies and lower edge frequencies, the downlink transmissions allocated to middle frequencies, a guard band allocated between an uplink region and a downlink region, and the downlink transmissions do not use at least a first symbol in a subframe.

6. The non-transitory computer-readable medium of claim 5, in which the uplink transmissions do not use at least one of a first set of symbols in the subframe.

7. An apparatus for wireless communication, comprising:

means for activating a component carrier; and

means for frequency division multiplexing uplink transmissions and downlink transmissions within the component carrier from a plurality of component carriers in a time division duplexed (TDD) network, the uplink transmissions and the downlink transmissions spatially multiplexed so that the uplink transmissions and the downlink transmissions are transmitted on a same carrier and are allocated to different frequency regions of the same carrier, the uplink transmissions allocated to upper edge frequencies and lower edge frequencies, the downlink transmissions allocated to middle frequencies, a guard band allocated between an uplink region and a downlink region, and the downlink transmissions do not use at least a first symbol in a subframe.

8. The apparatus of claim 7, in which the uplink transmissions do not use at least one of a first set of symbols in the subframe.