TDD time slot splitting
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsDavid Astely, Stefan Parkvall, Per Johan Anders Nystrom
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Abstract
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.
Claims20
A method for use in a cellular communications system, in which system, uplink and downlink traffic is sent in frames, each frame comprising a number of subframes, said subframes being available for at least either uplink or downlink traffic, at least one of said subframes comprising three parts:
- an uplink part which is utilized for uplink traffic,
- a downlink part which is utilized for downlink traffic,
- a guard period part which is utilized as a guard period,
- with said guard period part being scheduled between the uplink and the downlink parts, such that a total sum of a duration of the uplink part, the downlink part and the guard period part is a total subframe length, and a duration of at least two of said three parts is variable.
A transceiver for use as a controlling node in a cell of a cellular communications system, the transceiver being configured to send and receive uplink and downlink traffic in frames, with each frame comprising a number of subframes, said subframes being available for at least either uplink or downlink traffic, at least one of said subframes comprising three parts:
- an uplink part which is utilized for uplink traffic,
- a downlink part which is utilized for downlink traffic,
- a guard period part which is utilized as a guard period;
- and
- the transceiver being further configured for scheduling said guard period part between the uplink and the downlink parts such that a total sum of a duration of the uplink part, the downlink part and the guard period part is a total subframe length, and for varying a duration of at least two of said three parts of said at least one subframe.
Dependencies are inferred from the claim text.