EP-4197243-B1 - APPARATUS, METHODS, AND COMPUTER PROGRAMS FOR UPLINK POWER REDUCTION

EP4197243B1EP 4197243 B1EP4197243 B1EP 4197243B1EP-4197243-B1

Inventors

KOSKELA, TIMO
ENESCU, MIHAI
HAKOLA, SAMI-JUKKA
CAPORAL DEL BARRIO, SAMANTHA
DEGHEL, Matha

Dates

Publication Date: 20260506
Application Date: 20200813

Claims (15)

An apparatus for a terminal (102, 300), the apparatus comprising: means for determining that at least one uplink resource is associated with a reduced uplink transmission power complying with a maximum permissible exposure, MPE, requirement; and means for transmitting an identification of the at least one uplink resource to a network apparatus (104, 106, 108, 110, 200), wherein the identification indicates the at least one uplink resource using identifiers of SSB and/or CSI-RS, and wherein the identification is comprised within a bitmap, the apparatus further comprising means for receiving configuration information that configures the apparatus with said means for determining, wherein the determining comprises comparing a measured value of at least one parameter to at least one associated threshold for that parameter.
An apparatus as claimed in claim 1, wherein there are at least first and second parameters of said at least one parameter with respective first and second thresholds.
An apparatus as claimed in claim 1, wherein at least one of the at least one parameter has associated first and second thresholds, wherein the second threshold corresponds to a larger reduction in uplink transmission power than the first threshold, and wherein: when only said first threshold is exceeded, the means for transmitting transmits at least one identification of those uplink resources assigned to the terminal for uplink transmission that are affected by said power reduction; and when both of said first and second thresholds are exceeded, the means for transmitting transmits at least one identification of those uplink resources unassigned to the terminal for uplink resources that are affected by said power reduction.
An apparatus as claimed in any preceding claim, further comprising means for sending a cancellation indication to the network device when the terminal determines that an event causing the reduced uplink transmission power has passed.
An apparatus as claimed in any preceding claim, comprising means for determining whether or not the terminal is scheduled to transmit on at least one resource of a physical uplink shared channel and a physical uplink control channel that is associated with the reduced uplink transmission power; and wherein said means for transmitting comprises means for transmitting said identification in response to determining that the terminal is scheduled to transmit on at least one resource of a physical uplink shared channel or a physical uplink control channel that is associated with the reduced uplink transmission power.
A network apparatus (104, 106, 108, 110, 200), the apparatus comprising: means for receiving from a terminal an identification of at least one uplink resource associated with a reduced uplink transmission power by the terminal (102, 300), the reduced uplink transmission power complying with a maximum permissible exposure, MPE, requirement, wherein the identification indicates the at least one uplink resource using identifiers of SSB and/or CSI-RS, and wherein the identification is comprised within a bitmap; the network apparatus further comprising means for transmitting configuration information that configures the terminal to determine that at least one uplink resource is associated with a reduced uplink transmission power, wherein the configuration information comprises at least one threshold for the terminal to compare a measured value of at least one parameter to the at least one threshold for that parameter.
A network apparatus as claimed in claim 6, wherein there are at least first and second parameters of said at least one parameter with respective first and second thresholds.
A network apparatus as claimed in claim 6, wherein at least one of the at least one parameter has associated first and second thresholds, wherein the second threshold corresponds to a larger reduction in uplink transmission power than the first threshold, and wherein: when only said first threshold is exceeded, the means for receiving receives at least one identification of those uplink resources assigned to the terminal for uplink transmission that are affected by said power reduction; and when both of said first and second thresholds are exceeded, the means for receiving receives at least one identification of those uplink resources unassigned to the terminal for uplink resources that are affected by said power reduction.
A network apparatus as claimed in any of claims 6 to 8, wherein a single identity is used to identify a plurality of uplink resources that are associated with a reduced uplink transmission power.
A network apparatus as claimed in any of claims 6 to 9, further comprising means for receiving a cancellation indication from the terminal indicating that an event causing the reduced uplink transmission power has passed.
An apparatus or network apparatus as claimed in any preceding claim, wherein the indication provides an identification of an antenna panel on a terminal that is configured to transmit on the at least one uplink resource.
A method for an apparatus for a terminal, the method comprising: determining that at least one uplink resource is associated with a reduced uplink transmission power complying with a maximum permissible exposure, MPE, requirement; and transmitting an identification of the at least one uplink resource to a network apparatus (104, 106, 108, 110, 200), wherein the identification indicates the at least one uplink resource using identifiers of SSB and/or CSI-RS, and wherein the identification is comprised within a bitmap, the method further comprising: receiving configuration information that configures the apparatus with means for the determining, wherein the determining comprises comparing a measured value of at least one parameter to at least one associated threshold for that parameter.
A computer program comprising program instructions for causing an apparatus to perform the method according to claim 12.
A computer program product stored on a medium to cause an apparatus to perform the method according to claim 12.
A method for a network apparatus (104, 106, 108, 110, 200), the method comprising: receiving from a terminal an identification of at least one uplink resource associated with a reduced uplink transmission power by the terminal (102, 300), the reduced uplink transmission power complying with a maximum permissible exposure, MPE, requirement, wherein the identification indicates the at least one uplink resource using identifiers of SSB and/or CSI-RS, and wherein the identification is comprised within a bitmap; the method further comprising transmitting configuration information that configures the terminal to determine that at least one uplink resource is associated with a reduced uplink transmission power, wherein the configuration information comprises at least one threshold for the terminal to compare a measured value of at least one parameter to the at least one threshold for that parameter.

Description

Field The present disclosure relates to apparatus, methods, and computer programs, and in particular but not exclusively to apparatus, methods and computer programs for network apparatuses. Background A communication system can be seen as a facility that enables communication sessions between two or more entities such as user terminals, access nodes and/or other nodes by providing carriers between the various entities involved in the communications path. A communication system can be provided for example by means of a communication network and one or more compatible communication devices. The communication sessions may comprise, for example, communication of data for carrying communications such as voice, electronic mail (email), text message, multimedia and/or content data and so on. Content may be multicast or uni-cast to communication devices. A user can access the communication system by means of an appropriate communication device or terminal. A communication device of a user is often referred to as user equipment (UE) or user device. The communication device may access a carrier provided by an access node, and transmit and/or receive communications on the carrier. The communication system and associated devices typically operate in accordance with a required standard or specification which sets out what the various entities associated with the system are permitted to do and how that should be achieved. Communication protocols and/or parameters which shall be used for the connection are also typically defined. One example of a communications system is UTRAN (3G radio). Another example of an architecture that is known is the long-term evolution (LTE) or the Universal Mobile Telecommunications System (UMTS) radio-access technology. Another example communication system is so called 5G radio or new radio (NR) access technology. EP 2 317 815 A1 proposes procedures that allow an eNodeB to recognize the power usage status of a UE in a communication system using carrier aggregation. The UE indicates to the eNodeB, when the UE is close to using its maximum available transmit power. Summary According to a first aspect, there is provided an apparatus for a terminal, the apparatus comprising: means for determining that at least one uplink resource is associated with a reduced uplink transmission power complying with a maximum permissible exposure, MPE, requirement; and means for transmitting an identification of the at least one uplink resource to a network apparatus, wherein the identification indicates the at least one uplink resource using identifiers of SSB and/or CSI-RS, and wherein the identification is comprised within a bitmap. The apparatus further comprises means for receiving configuration information that configures the apparatus with said means for determining. The determining comprises comparing a measured value of at least one parameter to at least one associated threshold for that parameter. There may be at least first and second parameters of said at least one parameters with respective first and second thresholds. At least one of the at least one parameters may have associated first and second thresholds, wherein the second threshold corresponds to a larger reduction in uplink transmission power than the first threshold, and wherein: when only said first threshold is exceeded, the means for transmitting may transmit at least one identification of those uplink resources assigned to the terminal for uplink transmission that are affected by said power reduction; and when both of said first and second thresholds are exceeded, the means for transmitting may transmit at least one identification of those uplink resources unassigned to the terminal for uplink resources that are affected by said power reduction. The bitmap may identify at least one uplink resource that is not associated with a reduced uplink transmission power. The apparatus may comprise means for updating the bitmap in dependence on the uplink resource configuration. A single identity may be used to identify a plurality of uplink resources that are associated with a reduced uplink transmission power. The apparatus may comprise means for sending a cancellation indication to the network apparatus when the apparatus determines that an event causing the reduced uplink transmission power has passed. The apparatus may comprise means for determining whether or not the apparatus is scheduled to transmit on at least one resource of a physical uplink shared channel and a physical uplink control channel that is associated with the reduced uplink transmission power; and wherein said means for transmitting may comprise means for transmitting said identification in response to determining that the apparatus is scheduled to transmit on at least one resource of a physical uplink shared channel or a physical uplink control channel that is associated with the reduced uplink transmission power. The indication may provide an identification of an antenna pan