Configured Starting Position for a Wireless Network
Configuration parameters for a wireless device may comprise an energy detection threshold offset that may be used to adjust an energy detection threshold of an listen-before-talk (LBT) procedure. One or more transmissions may be based on the LBT procedure indicating a clear channel. The one or more transmissions may start from a configured starting position.
1 . A method comprising:
receiving, by a wireless device:
radio resource control (RRC) messaging comprising one or more channel access procedure configuration parameters for a cell operating in the shared spectrum; and
a parameter indicating one starting symbol, of a plurality of configured starting symbols within an uplink time interval, to use for transmission of one or more transport blocks (TBs);
performing, based on the one or more channel access configuration parameters, a channel access procedure for the cell; and
transmitting, based on the channel access procedure indicating an idle channel and starting from the one starting symbol indicated by the parameter, the one or more TBs via the cell.
2 . The method of claim 1 , wherein the cell operates according to frame structure Type 3.
3 . The method of claim 1 , wherein the receiving the parameter indicating the one starting symbol is via a licensed cell.
4 . The method of claim 1 , wherein the receiving the parameter indicating the one starting symbol is via a physical downlink control channel (PDCCH) or via an enhanced physical downlink control channel (ePDCCH).
5 . The method of claim 1 , wherein receiving the parameter indicating the one starting symbol comprises receiving downlink control information (DCI) that comprises the parameter indicating the one starting symbol.
6 . The method of claim 5 , wherein the receiving the DCI is in a first time interval.
7 . The method of claim 1 , wherein:
the one or more channel access procedure configuration parameters comprises an indication of an energy detection threshold; and
the channel access procedure comprises:
sensing the cell; and
comparing a detected power with the energy detection threshold.
8 . The method of claim 1 , wherein the receiving at least one of the RRC messaging or the parameter indicating the one starting symbol is from one or more of:
a transceiver;
a base station;
a base station sector;
a node; or
a relay node.
9 . The method of claim 1 , wherein the cell comprises one or more of:
a licensed assisted access (LAA) cell;
a cell that is configured to use an unlicensed spectrum for transmission;
a cell that is configured to use an unlicensed spectrum for transmission in accordance with one or more Third Generation Partnership Project standards;
a cell that is configured to use an unlicensed spectrum for transmission in accordance with one or more regulatory requirements;
a primary cell;
a secondary cell; or
a primary secondary cell.
10 . The method of claim 1 , wherein the uplink time interval comprises one or more of:
a frame;
a subframe; or
a slot.
11 . The method of claim 1 , further comprising receiving an uplink grant for the cell, wherein the transmitting is based on the uplink grant.
12 . The method of claim 11 , wherein the receiving the uplink grant is via a licensed cell.
13 . The method of claim 11 , wherein the receiving the uplink grant is via a physical downlink control channel (PDCCH) or via an enhanced physical downlink control channel (ePDCCH).
14 . The method of claim 11 , wherein the receiving the uplink grant comprises receiving downlink control information (DCI) that comprises the uplink grant.
15 . The method of claim 11 , wherein the uplink grant is for k time intervals after a first time interval that comprises downlink control information (DCI).
16 . The method of claim 1 , wherein the wireless device supports one or more of:
multiple wireless technology standards; or
multiple releases of a wireless technology standard.
17 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive:
resource control (RRC) messaging comprising one or more channel access procedure configuration parameters for a cell operating in the shared spectrum; and
a parameter indicating one starting symbol, of a plurality of configured starting symbols within an uplink time interval, to use for transmission of one or more transport blocks (TBs);
perform, based on the one or more channel access configuration parameters, a channel access procedure for the cell; and
transmit, based on the channel access procedure indicating an idle channel and starting from the one starting symbol indicated by the parameter, the one or more TBs via the cell.
18 . The wireless device of claim 17 , wherein the cell operates according to frame structure Type 3.
19 . The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive, via a licensed cell, the parameter indicating the one starting symbol.
20 . The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the parameter indicating the one starting symbol via a physical downlink control channel (PDCCH) or via an enhanced physical downlink control channel (ePDCCH).
21 . The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the parameter indicating the one starting symbol at least by receiving downlink control information (DCI) that comprises the parameter indicating the one starting symbol.
22 . The wireless device of claim 21 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the DCI at least by receiving the DCI in a first time interval.
23 . The wireless device of claim 17 , wherein:
the one or more channel access procedure configuration parameters comprises an indication of an energy detection threshold; and
the channel access procedure comprises:
sensing the cell; and
comparing a detected power with the energy detection threshold.
24 . The wireless device of claim 17 , wherein, the instructions, when executed by the one or more processors, cause the wireless device to receive at least one of the RRC messaging or the parameter indicating the one starting symbol from one or more of:
a transceiver;
a base station;
a base station sector;
a node; or
a relay node.
25 . The wireless device of claim 17 , wherein the cell comprises one or more of:
a licensed assisted access (LAA) cell;
a cell that is configured to use an unlicensed spectrum for transmission;
a cell that is configured to use an unlicensed spectrum for transmission in accordance with one or more Third Generation Partnership Project standards;
a cell that is configured to use an unlicensed spectrum for transmission in accordance with one or more regulatory requirements
a primary cell;
a secondary cell; or
a primary secondary cell.
26 . The wireless device of claim 17 , wherein the uplink time interval comprises one or more of:
a frame;
a subframe; or
a slot.
27 . The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
receive an uplink grant for the cell; and
transmit the one or more TBs further based on the uplink grant.
28 . The wireless device of claim 27 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the uplink grant via a licensed cell.
29 . The wireless device of claim 27 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the uplink grant via a physical downlink control channel (PDCCH) or via an enhanced physical downlink control channel (ePDCCH).
30 . The wireless device of claim 27 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the uplink grant at least by receiving downlink control information (DCI) that comprises the uplink grant.
31 . The wireless device of claim 27 , wherein the uplink grant is for k time intervals after a first time interval that comprises downlink control information (DCI).
32 . The wireless device of claim 17 , wherein the wireless device supports one or more of:
multiple wireless technology standards; or
multiple releases of a wireless technology standard.
33 . A system comprising:
a node; and
a wireless device;
wherein the node is configured to transmit:
resource control (RRC) messaging comprising one or more channel access procedure configuration parameters for a cell operating in the shared spectrum; and
a parameter indicating one starting symbol, of a plurality of configured starting symbols within an uplink time interval, to use for transmission of one or more transport blocks (TBs);
wherein the wireless device is configured to:
receive the RRC messaging and receive the parameter;
perform, based on the one or more channel access configuration parameters, a channel access procedure for the cell; and
transmit, based on the channel access procedure indicating an idle channel and starting from the one starting symbol indicated by the parameter, the one or more TBs via the cell.
34 . The system of claim 33 , wherein the cell operates according to frame structure Type 3.
35 . The system of claim 33 , wherein the node is configured to transmit the parameter indicating the one starting symbol via a licensed cell.
36 . The system of claim 33 , wherein the node is configured to transmit the parameter indicating the one starting symbol via a physical downlink control channel (PDCCH) or via an enhanced physical downlink control channel (ePDCCH).
37 . The system of claim 33 wherein the node is further configured to transmit the parameter indicating the one starting symbol at least by transmitting downlink control information (DCI) that comprises the parameter indicating the one starting symbol.
38 . The system of claim 37 , wherein the node is further configured to transmit the DCI in a first time interval.
39 . The system of claim 33 , wherein:
the one or more channel access procedure configuration parameters comprises an indication of an energy detection threshold; and
the wireless device is further configured to perform the channel access procedure at least by:
sensing the cell; and
comparing a detected power with the energy detection threshold.
40 . The system of claim 33 , wherein the node comprises at least one of:
a transceiver;
a base station;
a base station sector; or
a relay node.
41 . The system of claim 33 , wherein the cell comprises one or more of:
a licensed assisted access (LAA) cell;
a cell that is configured to use an unlicensed spectrum for transmission;
a cell that is configured to use an unlicensed spectrum for transmission in accordance with one or more Third Generation Partnership Project standards;
a cell that is configured to use an unlicensed spectrum for transmission in accordance with one or more regulatory requirements;
a primary cell;
a secondary cell; or
a primary secondary cell.
42 . The system of claim 33 , wherein the uplink time interval comprises one or more of:
a frame;
a subframe; or
a slot.
43 . The system of claim 33 , wherein:
the node is further configured to transmit an uplink grant for the cell; and
the wireless device is further configured to transmit the one or more TBs based on the uplink grant.
44 . The system of claim 43 , wherein the node is further configured to transmit the uplink grant via a licensed cell.
45 . The system of claim 43 , wherein the node is further configured to transmit the uplink grant via a physical downlink control channel (PDCCH) or via an enhanced physical downlink control channel (ePDCCH).
46 . The system of claim 43 , wherein the node is further configured to transmit downlink control information (DCI) that comprises the uplink grant.
47 . The system of claim 43 , the uplink grant is for k time intervals after a first time interval that comprises downlink control information (DCI).
48 . The system of claim 33 , wherein the wireless device supports one or more of:
multiple wireless technology standards; or
multiple releases of a wireless technology standard.