The invention discloses a method for a cellular communications system, in which traffic is sent in frames, each frame comprising a first number of subframes, with a second number of said subframes being available for at least either uplink or downlink traffic. At least one of said second number of subframes is made to comprise at least three parts, as follows: One part which is utilized for uplink traffic, One part which is utilized for downlink traffic, One part which is utilized as a guard period, with said guard period part being scheduled between the uplink and the downlink parts. The duration of at least two of said three parts may be varied to fit the current system need.

Claims

20 · 2 independent · depth 3

20 granted claims

›1.independentA method for use in a cellular communications system, in which system, uplink and downlink traffic is sent in frames, each frame comprising a number o…+9

›2.↳ 1The method of claim 1, applied to a TDD-system, Time Division Duplex, which uses an unpaired frequency spectrum, so that uplink and downlink traffic i…d2+1

›4.↳ 1The method of claim 1, applied to a half duplex FDD-system, (the acronym FDD meaning Frequency Division Duplex), so that uplink and downlink traffic f…d2

›5.↳ 1The method of claim 1, according to which the guard period is one of said at least two of three parts, and according to which method the guard period …d2+1

›7.↳ 1The method of claim 1, according to which the system is one in which an OFDM modulation method, Orthogonal Frequency Division Modulation is used in at…d2

›8.↳ 1The method of claim 1, according to which said subframe comprising three parts is interposed after a subframe used for downlink traffic and is followe…d2

›9.↳ 1The method of claim 1, according to which said subframe comprising three parts is interposed after a subframe used for uplink traffic and is followed …d2

›10.↳ 1The method of claim 1, applied to an LTE system, Long Term Evolution.d2

›11.independentA transceiver for use as a controlling node in a cell of a cellular communications system, the transceiver being configured to send and receive uplink…+9

›12.↳ 11The transceiver of claim 11, further configured for receiving information from an external source in the system regarding the varying of said three pa…d2

›13.↳ 11The transceiver of claim 11, further configured for transmitting, to users in a cell of the system, information regarding the duration of said three p…d2

›14.↳ 11The transceiver of claim 11, adapted to be used in a TDD-system, Time Division Duplex, which uses an unpaired spectrum, so that the uplink and the dow…d2+1

›16.↳ 11The transceiver of claim 11, wherein said transceiver is configured to be used in a half duplex FDD-system, (the acronym FDD meaning Frequency Divisio…d2

›17.↳ 11The transceiver of claim 11, in which the guard period is one of said at least two of three parts, and is configured for varying the guard period in d…d2+1

›19.↳ 11The transceiver of claim 11, wherein the transceiver is configured to be used in a system in which an OFDM modulation method, Orthogonal Frequency Div…d2

›20.↳ 11The transceiver of claim 11, further configured for interposing said subframe comprising three parts after a subframe used for the downlink traffic an…d2

Classifications

4 codes

IPC · International Patent Classification

Section H — Electricity

H04W4/00

USPC · US Patent Classification

370/341370/252370/255

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File wrapper

Pendency

2.8 y

1,012 days filing → grant

Office actions

non-final + final

Responses

no RCE

Examiner

Chi Pham

art unit 2471 · TC 2400

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Citations: 18 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20110274015 A1	10 Nov 2011

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