Tdd time slot splitting
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsDavid ASTELY, Stefan PARKVALL, Per Johan Anders NYSTRÖM
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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.
Claims23
A method for use in a cellular communications system, in which system the 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, according to which method 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, and according to which method the duration of at least two of said three parts may be varied to fit the current system need.
A transceiver for use as a controlling node in a cell of a cellular communications system, the transceiver being adapted to send and receive traffic in frames, with each frame comprising a first number of subframes and with a second number of said subframes being available for at least either uplink or downlink traffic, the transceiver being equipped with means for sending and receiving at least one of said second number of subframes in at least three parts, as follows:
- One part (UpPTS) which is utilized for uplink traffic,
- One part (DwPTS) which is utilized for downlink traffic,
- One part (GP) which is utilized as a guard period,
- the transceiver being equipped with means for scheduling said guard period part between the uplink and the downlink parts, and for varying the duration of at least two of said three parts to fit the current system need.
A transceiver for use as a user terminal in a cellular communications system, the transceiver being adapted to send and receive traffic in frames, with each frame comprising a first number of subframes and with a second number of said subframes being available for at least either uplink or downlink traffic, the transceiver being equipped with means for sending and receiving at least one of said second number of subframes in at least three parts, as follows:
- One part (UpPTS) which is utilized for uplink traffic,
- One part (DwPTS) which is utilized for downlink traffic,
- One part (GP) which is utilized as a guard period,
- the transceiver also being equipped with means for scheduling said guard period part between the uplink and the downlink parts, and with means for receiving information from a controlling node regarding said scheduling as well as the duration of said three parts.
Dependencies are inferred from the claim text.