Physical channel structure for communication in unlicensed frequency band

• US 10,674,525 B2
• Filed: 12/11/2018
• Issued: 06/02/2020
• Est. Priority Date: 05/22/2014
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Kalhan, Amit, Chang, Henry, Comstock, David
• Primary Examiner(s): Ambaye, Mewale A
• Application Number:
  US16/215,986
• Publication Number:
  US 20190182851A1
• Time in Patent Office: 539 Days
• CPC Class Codes: H04B 7/2615 using hybrid frequency-time division multiple access [FDMA-TDMA]
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• 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 72/541 using the level of interference
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/08 : Access point devices

Abstract

Communication equipment communicates in a licensed frequency band using a licensed band physical channel structure (licensed structure) and communicates in an unlicensed frequency communication band using an unlicensed band physical channel structure (unlicensed structure) where the unlicensed structure includes at least the same symbol times and subcarrier frequency divisions as in the licensed structure. The symbol times and subcarriers form a plurality of time-frequency communication resource elements. A set of symbol times and subcarrier frequency divisions form a licensed reference subset of communication resource elements that are allocated for reference signal transmission in the licensed structure. The same set of symbol times and subcarrier frequency divisions form an unlicensed reference subset of communication resource elements that are allocated for reference signal transmission in the unlicensed structure.

Claims

1. An apparatus for controlling a user equipment (UE) device, the apparatus comprising:

a controller configured to execute the processing of;

transmitting first signals within a licensed frequency band using a licensed physical channel structure comprising a first plurality of time-frequency communication resource elements formed by a plurality of symbol times and a plurality of subcarrier divisions dividing the licensed frequency band; and

transmitting second signals within an unlicensed frequency band using an unlicensed physical channel structure comprising a second plurality of time-frequency communication resource elements formed by the plurality of symbol times and the plurality of subcarrier divisions dividing the unlicensed frequency band.

2. The apparatus of claim 1, wherein the apparatus is an electrical component configured to connect to other electrical components in the UE device.

3. The apparatus of claim 2, wherein other electrical components comprise a transmitter.

4. The apparatus of claim 3, wherein the transmitter comprises a licensed band transceiver and an unlicensed band transmitter.