Communication method, base station, user equipment and storage medium
The disclosure provides a communication method, a base station, a user equipment, and a storage medium in a communication system supporting a carrier aggregation (CA). The method comprises identifying ratio information for a plurality of carriers for a user equipment (UE) from at least one candidate ratio information based on a total carrier transmission capacity of the plurality of carriers. The method comprises determining a transmit power for each carrier based on the target power allocation ratio information. The method comprises receiving, from the UE, uplink signals according to the transmit power for each carrier. The ratio information for the plurality of carriers includes a power allocation ratio for each carrier. The total carrier transmission capacity of the plurality of carriers comprises a sum of transport block sizes of individual carriers in the plurality of carriers. The above method performed by the base station or UE can be performed using an artificial intelligence model.
1 . A base station supporting a carrier aggregation (CA), the base station comprising:
at least one transceiver;
memory, including one or more storage media, storing instructions; and
at least one processor comprising processor circuitry coupled to the at least one transceiver,
wherein the instructions, when executed by the at least one processor individually and/or collectively, cause the base station to:
identify transport block sizes (TBSs) based on candidate power allocation ratios for a plurality of carriers of the CA,
identify a power allocation ratio corresponding to a maximum TBS of the TBSs, from among the candidate power allocation ratios;
determine transmit powers for the plurality of carriers based on the target-power allocation ratio;
transmit, to a user equipment (UE), control information indicating the transmit powers for the plurality of carriers; and
receive, from the UE, uplink signals according to the transmit powers for the plurality of carriers.
2 . The device of claim 1 ,
wherein the TBSs include a TBS of a corresponding carrier of the plurality of carriers, and
wherein the TBS is determined based on:
at least one capacity parameter for the corresponding carrier, and
resource block (RB) allocation information for the corresponding carrier.
3 . The device of claim 2 ,
wherein the at least one capacity parameter comprises at least one of:
the number of symbols,
a modulation and coding scheme (MCS),
the number of layers,
a waveform, or
a maximum modulation mode, and
wherein the MCS is determined based on an estimated signal to interference plus noise ratio (SINR) and an offset according to a power allocation ratio of the corresponding carrier.
4 . The device of claim 2 ,
wherein the base station comprises a distributed unit (DU), and
wherein the uplink signals are obtained from the UE through a radio unit (RU).
5 . The device of claim 2 ,
wherein the RB allocation information is determined based on:
a maximum transmit power; and
a power allocation ratio of the corresponding carrier.
6 . The device of claim 5 , wherein the RB allocation information is further determined based on a power limit for the corresponding carrier, information of a power headroom (PH) for the corresponding carrier, and a power demand for the corresponding carrier-.
7 . The device of claim 6 , wherein the instructions, when executed by the at least one processor, individually and/or collectively, cause the base station to:
obtain, from the UE, a power headroom report (PHR) based on a PHR reporting period,
wherein the information of the PH for the corresponding carrier is updated based on the PHR.
8 . The device of claim 2 ,
wherein the plurality of carriers comprises a primary carrier for a primary cell (PCell) and at least one secondary carrier for a secondary cell (SCell), and
wherein a power allocation ratio of the primary carrier is greater than a minimum threshold.
9 . The device of claim 8 , wherein the minimum threshold is determined based on an estimated control plane power associated with the primary carrier and a total power.
10 . A method performed by a base station supporting a carrier aggregation (CA), the method comprising:
identifying transport block sizes (TBSs) based on candidate power allocation ratios for a plurality of carriers of the CA;
identifying a power allocation ratio corresponding to a maximum TBS of the TBSs, from at least one candidate ratio information based on a total carrier transmission capacity of the plurality of carriers
determining transmit powers for the plurality of carriers based on the power allocation ratio;
transmitting, to a user equipment (UE), control information indicating the transmit powers for the plurality of carers; and
receiving, from the UE, uplink signals according to the transmit powers for each the plurality of carriers.
11 . The method of claim 10 ,
wherein the TBSs include a TBS of a corresponding carrier of the plurality of carriers,
wherein the TBS is determined based on:
at least one capacity parameter for the corresponding carrier, and
resource block (RB) allocation information for the corresponding carrier.
12 . The method of claim 11 ,
wherein the at least one capacity parameter comprises at least one of:
the number of symbols,
a modulation and coding scheme (MCS),
the number of layers,
a waveform, or
a maximum modulation mode.
13 . The method of claim 11 , wherein the MCS is determined based on an estimated signal to interference plus noise ratio (SINR) and an offset according to a power allocation ratio of the corresponding carrier.
14 . The method of claim 11 ,
wherein the RB allocation information is determined based on:
a maximum transmit power; and
a power allocation ratio of the corresponding carrier.
15 . The method of claim 14 , wherein the RB allocation information is further determined based on a power limit for the corresponding carrier, information of a power headroom (PH) for the corresponding carrier, and a power demand for the corresponding carrier.
16 . The method of claim 15 , further comprising:
receiving, from the UE, a power headroom report (PHR) based a PHR reporting period,
wherein the information of the PH for the corresponding carrier is updated based on the PHR.
17 . The method of claim 11 ,
wherein the plurality of carriers comprises a primary carrier for a primary cell (PCell) and at least one second carrier for a secondary cell (SCell),
wherein a power allocation ratio of the primary carrier is greater than a minimum threshold, and
wherein the minimum threshold is determined based on an estimated control plane power associated with the primary carrier and a total power.
18 . A non-transitory computer-readable storage medium having stored thereon program instructions, the instructions, when executed by a processor, perform operations including:
identifying transport block sizes (TBSs) based on candidate power allocation ratios for a plurality of carriers of a carrier aggregation (CA);
identifying a power allocation ratio corresponding to a maximum TBS of the TBSs, from among the candidate power allocation ratios;
determining transmit powers for the plurality of carriers based on the power allocation ratio;
transmitting, to a user equipment (UE), control information indicating the transmit powers for the plurality of carriers; and
receiving, from the UE, uplink signals according to the transmit powers for the plurality of carriers.