Spectrum sharing between terrestrial network and non-terrestrial network with interference control
Solutions pertaining to spectrum sharing between a terrestrial network (TN) and a non-terrestrial network (NTN) with interference control are proposed. An apparatus implemented in a UE communicates with a non-terrestrial (NT) network node of the NTN by resource sharing with the TN. There is a requirement on either or both of a directive gain and a directive emission power with respect to a network node of the TN such that interference between TN downlink (DL) transmissions and NTN uplink (UL) transmissions is less than a threshold.
1 . A method, comprising:
communicating, by a processor of a user equipment (UE), with a non-terrestrial (NT) network node of a non-terrestrial network (NTN) by resource sharing with a terrestrial network (TN),
wherein there is a requirement on either or both of a directive gain and a directive emission power with respect to a network node of the TN such that interference between TN downlink (DL) transmissions and NTN uplink (UL) transmissions is less than a threshold,
wherein at least one of the directive gain and the directive emission power is defined with a continuous emission mask for all angles above a specified angle above a horizon.
2 . The method of claim 1 , wherein an effective isotropic radiated power (EIRP) of the network node of the TN is lower than a specified EIRP value from the continuous emission mask.
3 . The method of claim 1 , wherein the requirement comprises a limit on an average network node transmit (Tx) power of the TN per unit of earth surface (dBm per km2).
4 . The method of claim 1 , wherein the requirement comprises a restriction on an antenna polarization used by the TN.
5 . The method of claim 4 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN being restricted to use vertically or horizontally polarized antennas.
6 . The method of claim 4 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN being restricted to use left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).
7 . The method of claim 4 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN using vertical polarization while a NTN UL receiver uses a horizontally polarized antenna or a combination of left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).
8 . The method of claim 4 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN using right-hand circular polarization (RHCP) while a NTN UL receiver uses left-hand circular polarization (LHCP).
9 . The method of claim 4 , wherein the restriction on the antenna polarization used by the TN comprises a DL transmission by the network node of the TN and a NTN UL receiver using a same circular polarization which is either left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).
10 . A method, comprising:
communicating, by a processor of a network node of a terrestrial network (TN), with at least one user equipment (UE) by resource sharing with a non-terrestrial network (NTN),
wherein there is a requirement on either or both of a directive gain and a directive emission power with respect to the network node of the TN such that interference between TN downlink (DL) transmissions and NTN uplink (UL) transmissions is less than a threshold,
wherein at least one of the directive gain and the directive emission power is defined with a continuous emission mask for all angles above a specified angle above a horizon.
11 . The method of claim 10 , wherein an effective isotropic radiated power (EIRP) of the network node of the TN is lower than a specified EIRP value from the continuous emission mask.
12 . The method of claim 10 , wherein the requirement comprises a limit on an average network node transmit (Tx) power of the TN per unit of earth surface (dBm per km2).
13 . The method of claim 10 , wherein the requirement comprises a restriction on an antenna polarization used by the TN.
14 . The method of claim 13 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN being restricted to use vertically or horizontally polarized antennas.
15 . The method of claim 13 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN being restricted to use left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).
16 . The method of claim 13 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN using vertical polarization while a NTN uplink (UL) receiver uses a horizontally polarized antenna or a combination of left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).
17 . The method of claim 13 , wherein the restriction on the antenna polarization used by the TN comprises the network node of the TN using right-hand circular polarization (RHCP) while a NTN uplink (UL) receiver uses left-hand circular polarization (LHCP).
18 . The method of claim 13 , wherein the restriction on the antenna polarization used by the TN comprises a downlink (DL) transmission by the network node of the TN and a NTN uplink (UL) receiver using a same circular polarization which is either left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP).