US 11,546,126 B2Granted

Asymmetric TDD in flexible use spectrum

AssigneeDBSD Corporation

InventorsMariam Sorond, Peter Corea, Doug Hyslop, Tom Peters

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Abstract

Method and systems are provided for receiving and transmitting signals over a time division duplex communication path (the “Path”). Operations may include sending a first signal via an uplink portion of the Path, and receiving a second signal via a downlink portion of the Path. The Path operates over a first band having a first frequency range and during a communication time including an uplink period (TU) and a downlink period (TD). The uplink portion is sent during the uplink period, uses a first portion of the first frequency range and is disposed between a first uplink guard band portion and a second uplink guard band portion. The guard bands are allocated from a second portion and a third portion of the first band. The first band is disposed between a second band, providing a second communication path, and a third band providing an FDD communication path.

Claims15

Dependent claims

A method comprising:

sending a first signal via a TDD uplink portion of a time division duplex (TDD) communication path;
receiving a second signal via a TDD downlink portion of the TDD communication path;
wherein the TDD communication path operates:
over a first band having a first frequency range;
and
during a communication time including an uplink period (TU) and a downlink period (TD);
wherein the TDD uplink portion:
is sent during the uplink period;
uses a first portion of the first frequency range of the first band;
and
is disposed between a first uplink guard band portion and a second uplink guard band portion;
wherein the first uplink guard band portion and the second uplink guard band portion are allocated, respectively, from a second portion and a third portion of the first band;
wherein the first band is disposed between a second band and a third band;
wherein the second band provides a second communication path during the communication time;
and
wherein the third band provides an FDD communication path during the communication time.

13 more elements

An apparatus comprising:

a communications device configured to:
send a time division duplex (TDD) signal via a TDD uplink portion of a time division duplex (TDD) communication path operating over a first band;
and
receive a second signal via a TDD downlink portion of the TDD communication path operating over the first band;
wherein the TDD communication path operates during a communication time including an uplink period (TU) and a downlink period (TD);
wherein the TDD uplink portion is sent during the uplink period (TU);
wherein the TDD downlink portion is received during the downlink period (TD);
wherein the first band is disposed between a second band and a third band;
wherein the second band provides a broadcast communication path during the communication time;
wherein the third band provides an FDD communication path during the communication time;
wherein during the uplink period:
the TDD uplink portion uses a first portion of the first band;
the TDD uplink portion is disposed between a first uplink guard band portion and a second uplink guard band portion;
and
the first uplink guard band portion and the second uplink guard band portions are respectively allocated from a second portion and a third portion of the first band not used by the TDD uplink portion;
and
wherein during the downlink period, the TDD downlink portion uses the first band.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/361,790Filed 29 Jun 2021 · continuation
Priority: 14 Nov 2008
Published: US 2021/0336757 A128 Oct 2021
Granted: 3 Jan 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04L 5/14
Arrangements affording multiple use of the transmission path: two-way operation using the same type of signal, i.e. duplex
H04B 7/2615
At least one of which is mobile: using hybrid frequency-time division multiple access [FDMA-TDMA]
H04J 3/22
Time-division multiplex systems: in which the sources have different rates or codes
H04L
Digital communication

Family

Application12/270,946Parent of this continuation-in-part · filed 14 Nov 2008
Application13/105,279Parent of this continuation · filed 11 May 2011
US 7,969,923 B2Parent of this continuation-in-part · filed 28 Jun 2011
Application14/028,179Parent of this division · filed 16 Sep 2013
US 8,537,732 B2Parent of this continuation · filed 17 Sep 2013
Application15/130,563Parent of this continuation · filed 15 Apr 2016
US 9,497,015 B2Parent of this division · filed 15 Nov 2016
Application15/493,762Parent of this continuation · filed 21 Apr 2017
Application15/641,289Parent of this continuation · filed 4 Jul 2017
US 9,722,762 B2Parent of this continuation · filed 1 Aug 2017
US 9,923,709 B2Parent of this continuation · filed 20 Mar 2018
Application16/166,118Parent of this continuation · filed 21 Oct 2018
US 10,263,756 B2Parent of this continuation · filed 16 Apr 2019
Application16/802,946Parent of this continuation · filed 27 Feb 2020
US 2021/0336757 A1Pre-grant publication · published 28 Oct 2021
US 11,153,062 B2Parent of this continuation
Application15/130,563Parent of this division
Application14/028,179Parent of this continuation
Application13/105,279Parent of this continuation-in-part
US 2010/0124183 A1Published application
US 2011/0211502 A1Published application
US 2014/0016521 A1Published application
US 2016/0233975 A1Published application
US 2017/0230166 A1Published application
US 2017/0310453 A1Published application
US 2019/0058571 A1Published application
US 2020/0195411 A1Published application
US 9,319,209 B2Related patent
US 11,546,126 B2This patent

From the US filing history. Foreign family members aren’t listed.