Apparatus, method, and computer program for pilot transmission

Abstract

Spectral efficiency and capacity can be improved by using superimposed pilot (SIP) transmission. Superimposed (SI) symbols provide for superimposition of pilot and data signals transmitted in the same

Description

Field of the document The present document relates to an apparatus, a method, and a computer program for uplink pilot transmission in a communication system. Background A communication system can be seen as a facility that enables communication sessions between two or more entities such as communication devices, base stations and / or other nodes by providing carriers between the various entities involved in the communications path. The communication system may be a wireless communication system. Examples of wireless systems comprise public land mobile networks (PLMN) operating based on radio standards such as those provided by 3GPP, satellite-based communication systems and different wireless local networks, for example wireless local area networks (WLAN). The wireless systems can typically be divided into cells and are therefore often referred to as cellular systems. The communication system and associated devices typically operate in accordance with a given 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. Examples of standard are the so-called 4G, 5G or 6G standards. Summary According to an aspect there is provided a user device comprising: means for receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI, symbols; and means for transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or means for receiving, from base station, the SI symbols based on the configuration of the first set of constellations. The user device may comprise: means for receiving, from the base station, the configuration of the first set of constellations; and / or means for determining, by the user device, the configuration of the first set of constellations. The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The user device may comprise: means for transmitting, to the base station, a second set of constellations, wherein the second set of constellations is learned by the user device; and / or the second set of constellations is obtained by the user device from a network or a server. The user device may comprise: The first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations. The one or more constellations are non-zero-mean, NZM, constellations, or zero-mean, ZM, constellations. The user device may comprise: means for obtaining, by the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises a transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and means for transmitting, to the base station, the second set of constellations based on the SIP configuration. The SIP configuration in this document is common for all aspects and embodiments. The description of the SIP configuration here can be applied to any of aspects and embodiments. It should be noticed that the SIP configuration illustrated here will not be repeatedly described in other aspects or embodiments for simplicity. The SIP configuration comprises a transmission layer information associated with one or more constellations for transmission or reception of the SI symbols. The SIP configuration is associated with the second set of constellations. The transformation layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP, symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The user device may comprise: obtaining the transformation based on a predefined configuration; obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs , a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The REs indicates the REs where the SIP symbols are superimposed with data symbols, or the data symbols comprise information associated with SIP symbols. The indication of the REs comprises at least one of: indication of a list of REs per layer where SIP symbols are superimposed with data symbols; or indication of indices of REs per layer where SIP symbols are superimposed with data symbols. The power allocation comprises an indication of a power of superimposed pilot, SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The indication of the power of the SIP symbols relative to the power of SID symbols is defined for all SI symbols and data symbols or each of the plurality of REs. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; and / or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission or reception of the SI symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The user device may comprise: means for receiving, from the base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for transmitting, to the base station, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The user device may comprise: means for receiving, from the base station, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect there is provided a method comprising: receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI, symbols; and transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or receiving, from base station, the SI symbols based on the configuration of the first set of constellations. The method may comprise: receiving, from the base station, the configuration of the first set of constellations; and / or determining, by the user device, the configuration of the first set of constellations. The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The method may comprise: transmitting, to the base station, a second set of constellations, wherein the second set of constellations is learned by the user device; and / or the second set of constellations is obtained by the user device from a network or a server. The first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations. The one or more constellations are non-zero-mean, NZM, constellations, or zero-mean, ZM, constellations. The method may comprise: obtaining, by the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises a transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and transmitting, to the base station, the second set of constellations based on the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The transformation layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP, symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs , a pattern for the plurality of REs, and / or a power allocation of SIP symbols; The power allocation comprises an indication of a power of superimposed pilot, SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The method may comprise: receiving, from the base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and transmitting, to the base station, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The method may comprise: receiving, from the base station, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect there is provided a user device comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: obtaining, by a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI, symbols; and transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or receiving, from base station, the SI symbols based on the configuration of the first set of constellations. According to an aspect there is provided a user device comprising circuitry configured to perform: obtaining, by a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI, symbols; and transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or receiving, from base station, the SI symbols based on the configuration of the first set of constellations. According to an aspect there is provided a computer program comprising computer executable code which when run on at least one processor is configured to perform: obtaining, by a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI, symbols; and transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or receiving, from base station, the SI symbols based on the configuration of the first set of constellations. According to an aspect there is provided an apparatus comprising: means for transmitting, to a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and means for receiving, from a user device, the SI symbols based on the configuration of the first set of constellations; and / or means for transmitting, to the user device, the SI symbols based on the configuration of the first set of constellations. The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The apparatus may comprise: means for receiving, from a user device, a second set of constellations, wherein the second set of constellations is learned by the user device; and / or the second set of constellations is obtained by the user device from a network or a server. The first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations. The one or more constellations are non-zero-mean, NZM constellations, or zero-mean ZM constellations. The apparatus may comprise: means for transmitting, to the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission information associated with one or more constellations for the transmission or reception of the SI symbols; and means for receiving, from the user device, the second set of constellations based on the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The power allocation comprises an indication of a power of superimposed pilot, SIP, symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The transformation layer information comprising: an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The apparatus may comprise: obtaining the transformation based on a predefined configuration; obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The apparatus may comprise: means for transmitting, to the user device, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols, and means for receiving, from the user device, the user equipment, UE capability information. The apparatus may comprise: means for transmitting, to the user equipment, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The one or more constellations comprises one or more learned constellations. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect there is provided a method comprising: transmitting, to a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and means for receiving, from a user device, the SI symbols based on the configuration of the first set of constellations; and / or means for transmitting, to the user device, the SI symbols based on the configuration of the first set of constellations. The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The method may comprise: receiving, from a user device, a second set of constellations, wherein the second set of constellations is learned by the user device; and / or the second set of constellations is obtained by the user device from a network or a server. The first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations. The one or more constellations are non-zero-mean, NZM constellations, or zero-mean ZM constellations. The method may comprise: transmitting, to the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission information associated with one or more constellations for the transmission or reception of the SI symbols; and receiving, from the user device, the second set of constellations based on the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The transformation layer information comprising: an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The method may comprise: transmitting, to the user device, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols, and receiving, from the user device, the user equipment, UE capability information. The method may comprise: transmitting, to the user equipment, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The one or more constellations comprises one or more learned constellations. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect there is provided an apparatus comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: transmitting, to a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and receiving, from a user device, the SI symbols based on the configuration of the first set of constellations; and / or transmitting, to the user device, the SI symbols based on the configuration of the first set of constellations. According to an aspect there is provided an apparatus comprising circuitry configured to perform: transmitting, to a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and receiving, from a user device, the SI symbols based on the configuration of the first set of constellations; and / or transmitting, to the user device, the SI symbols based on the configuration of the first set of constellations. According to an aspect there is provided a computer program comprising computer executable code which when run on at least one processor is configured to perform: transmitting, to a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and receiving, from a user device, the SI symbols based on the configuration of the first set of constellations; and / or transmitting, to the user device, the SI symbols based on the configuration of the first set of constellations. According to an aspect there is provided a user device comprising: means for receiving, from a base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for transmitting, to the base station, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The user device may comprise: means for receiving, from the base station, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. The user device may comprise: means for obtaining, by a user equipment, a configuration of a first set of constellations , wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and means for transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or means for receiving, from base station, the SI symbols based on the configuration of the first set of constellations. The user device may comprise: means for receiving, from the base station, the configuration of the first set of constellations; and / or means for determining, by the user device, the configuration of the first set of constellations; The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The user device may comprise: means for transmitting, to the base station, a second set of constellations, wherein the second set of constellations is learned by the user device; and / or the second set of constellations is obtained by the user device from a network or a server. The first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations. The one or more constellations are non-zero-mean, NZM constellations, or zero-mean ZM constellations. The user device may comprise: means for obtaining, by the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and means for transmitting, to the base station, the second set of constellations based on the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The transformation layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The user device may comprise: obtaining the transformation based on a predefined configuration; obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The REs indicate the REs where the SIP symbols are superimposed with data symbols or the data symbols comprise information associated to SIP symbols. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission or reception of the SI symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. According to an aspect there is provided a method comprising: receiving, from a base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and transmitting, to the base station, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The method may comprise: receiving, from the base station, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. The method may comprise: obtaining, by a user equipment, a configuration of a first set of constellations , wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or receiving, from base station, the SI symbols based on the configuration of the first set of constellations. The method may comprise: receiving, from the base station, the configuration of the first set of constellations; and / or determining, by the user device, the configuration of the first set of constellations; The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The method may comprise: transmitting, to the base station, a second set of constellations, wherein the second set of constellations is learned by the user device; and / or the second set of constellations is obtained by the user device from a network or a server. The first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations. The one or more constellations are non-zero-mean, NZM constellations, or zero-mean ZM constellations. The method may comprise: obtaining, by the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and transmitting, to the base station, the second set of constellations based on the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The transformation layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The user device may comprise: obtaining the transformation based on a predefined configuration; obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The REs indicate the REs where the SIP symbols are superimposed with data symbols or the data symbols comprise information associated to SIP symbols. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission or reception of the SI symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. According to an aspect there is provided a user device comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: receiving, from a base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and transmitting, to the base station, the user equipment, UE capability information. According to an aspect there is provided a user device comprising circuitry configured to perform: receiving, from a base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and transmitting, to the base station, the user equipment, UE capability information. According to an aspect there is provided a computer program comprising computer executable code which when run on at least one processor is configured to perform: receiving, from a base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and transmitting, to the base station, the user equipment, UE capability information. According to an aspect, there is provided an apparatus comprising: means for transmitting, to a user device, a request to receive a user equipment, UE, capability information indicating whether the user equipment supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for receiving, from the user device, the user equipment, UE, capability information. The apparatus may comprise: means for transmitting, to the user equipment, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The one or more constellations comprises one or more learned constellations. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. The apparatus may comprise: means for transmitting, to a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and means for receiving, from a user device, the SI symbols based on the configuration of the first set of constellations; and / or means for transmitting, to the user device, the SI symbols based on the configuration of the first set of constellations. The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The apparatus may comprise: means for receiving, from the user equipment, a second set of constellations, wherein the second set of constellations is learned by the user device and the first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations, the one or more constellations are non-zero-mean, NZM constellations, or zero-mean ZM constellations. The apparatus may comprise: means for transmitting, to the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission information associated with one or more constellations for the transmission or reception of the SI symbols; and means for receiving, from the user device, the second set of constellations based on the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The transformation layer information comprising: an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. According to an aspect there is provided a method comprising: transmitting, to a user device, a request to receive a user equipment, UE, capability information indicating whether the user equipment supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for receiving, from the user device, the user equipment, UE, capability information. The method may comprise: transmitting, to the user equipment, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The one or more constellations comprises one or more learned constellations. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. The method may comprise: transmitting, to a user device, a configuration of a first set of constellations, wherein the first set of constellations is applied to determine transmission or reception of Superimposed, SI symbols; and receiving, from a user device, the SI symbols based on the configuration of the first set of constellations; and / or transmitting, to the user device, the SI symbols based on the configuration of the first set of constellations. The configuration comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The method may comprise: receiving, from the user equipment, a second set of constellations, wherein the second set of constellations is learned by the user device and the first set of constellations is selected from the second set of constellations. The first set of constellations and / or the second set of constellations comprises one or more constellations, the one or more constellations are non-zero-mean, NZM constellations, or zero-mean ZM constellations. The method may comprise: transmitting, to the user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission information associated with one or more constellations for the transmission or reception of the SI symbols; and receiving, from the user device, the second set of constellations based on the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission or reception of SI symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The transformation layer information comprising: an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. According to an aspect, there is provided an apparatus comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: transmitting, to a user device, a request to receive a user equipment, UE, capability information indicating whether the user equipment supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for receiving, from the user device, the user equipment, UE, capability information. According to an aspect there is provided an apparatus comprising circuitry configured to perform: transmitting, to a user device, a request to receive a user equipment, UE, capability information indicating whether the user equipment supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for receiving, from the user device, the user equipment, UE, capability information. According to an aspect there is provided a computer program comprising computer executable code which when run on at least one processor is configured to perform: transmitting, to a user device, a request to receive a user equipment, UE, capability information indicating whether the user equipment supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for receiving, from the user device, the user equipment, UE, capability information. According to an aspect there is provided a user device comprising: means for receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to obtain a second set of constellation; and / or means for obtaining, by a user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and means for transmitting, to a base station, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The second set of constellations, further comprising: the second set of constellations is learned by the user device, and / or the second set of constellations is obtained by the user device from a network or a server. The user device may comprise: means for obtaining, by a user device, a configuration of a third set of constellations , wherein the third set of constellations is applied to determine the transmission or reception of SI symbols; and means for transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or means for receiving, from a base station, the SI symbols based on the configuration of the first set of constellations. The user device may comprise: means for receiving, from the base station, the configuration of the third set of constellations; and / or means for determining, by the user device, the configuration of the third set of constellations. The configuration of the first set of constellation, and / or the configuration of the third set of constellations comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The third set of constellations is selected based on the second set of constellations. The first set of constellations, the second set of constellations, and / or the third set of constellations comprises one or more constellations. The one or more constellations comprises non-zero-mean, NZM constellations or zero-mean ZM constellations. The transformation layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The user device may comprise: obtaining the transformation based on a predefined configuration; obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The REs indicates the REs where the SIP symbols are superimposed with data symbols, or the data symbols comprise information associated to SIP symbols. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission or reception of the SI symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The user device may comprise: means for receiving, from the base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for transmitting, to the base station, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The user device may comprise: means for receiving, from the base station, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect there is provided a method comprising: receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to obtain a second set of constellation; and / or obtaining, by a user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and transmitting, to a base station, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The second set of constellations, further comprising: the second set of constellations is learned by the user device, and / or the second set of constellations is obtained by the user device from a network or a server. The method may comprise: obtaining, by a user device, a configuration of a third set of constellations, wherein the third set of constellations is applied to determine the transmission or reception of SI symbols; and transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / or receiving, from a base station, the SI symbols based on the configuration of the first set of constellations. The method may comprise: means for receiving, from the base station, the configuration of the third set of constellations; and / or determining, by the user device, the configuration of the third set of constellations. The configuration of the first set of constellations, and / or the configuration of the third set of constellations comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The third set of constellations is selected based on the second set of constellations. The first set of constellations, the second set of constellations, and / or the third set of constellations comprises one or more constellations. The one or more constellations comprises non-zero-mean, NZM constellations or zero-mean ZM constellations. The transformation layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The indication of the REs comprises at least one of: indication of a list of REs per layer where SIP symbols are superimposed with data symbols; or indication of indices of REs per layer where SIP symbols are superimposed with data symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The method may comprise: receiving, from the base station, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and transmitting, to the base station, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The method may comprise: receiving, from the base station, network capability information indicating whether the network supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect there is provided a user device comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to obtain a second set of constellation; and / or obtaining, by a user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and transmitting, to a base station, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. According to an aspect there is provided a user device comprising circuitry configured to perform: receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to obtain a second set of constellation; and / or obtaining, by a user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and transmitting, to a base station, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. According to an aspect there is provided a computer program comprising computer executable code which when run on at least one processor is configured to perform: receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to obtain a second set of constellation; and / or obtaining, by a user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and transmitting, to a base station, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. According to an aspect there is provided an apparatus comprising: means for transmitting, to a user device, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is applied to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and means for receiving, from a user device, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The apparatus may comprise: means for transmitting, to a user device, a configuration of a third set of constellations, wherein the third set of constellations is applied to determine the transmission or reception of Superimposed, SI symbols; and means for receiving, from a user device, the SI symbols based on the configuration of the third set of constellations; and / or means for transmitting, to a user device, the SI symbols based on the configuration of the third set of constellations. The configuration of the first set of constellations, and / or the configuration of the third set of constellations comprise one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The third set of constellations is selected from the second set of constellations. The first set of constellations, the second set of constellations, and / or the third set of constellations comprises one or more constellations. The one or more constellations comprises non-zero-mean, NZM constellations or zero-mean ZM constellations. The transmission layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The apparatus may comprise: means for transmitting, to the user device, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and means for receiving, from the user device, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The apparatus may comprise: means for transmitting, to the user equipment, network capability information indicating whether the network supports usage of one or more constellation for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect there is provided a method comprising: transmitting, to a user device, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is applied to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and receiving, from a user device, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. The description of the SIP configuration in the first aspect can be applied in this aspect in the same way. The apparatus may comprise: means for transmitting, to a user device, a configuration of a third set of constellations, wherein the third set of constellations is applied to determine the transmission or reception of Superimposed, SI symbols; and means for receiving, from a user device, the SI symbols based on the configuration of the third set of constellations; and / or means for transmitting, to a user device, the SI symbols based on the configuration of the third set of constellations. The configuration of the first set of constellations, and / or the configuration of the third set of constellations comprise one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The third set of constellations is selected from the second set of constellations. The first set of constellations, the second set of constellations, and / or the third set of constellations comprises one or more constellations. The one or more constellations comprises non-zero-mean, NZM constellations or zero-mean ZM constellations. The transmission layer information comprising: an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. The method may comprise: transmitting, to the user device, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols; and receiving, from the user device, the user equipment, UE capability information. The one or more constellations comprises one or more learned constellations. The method may comprise: transmitting, to the user equipment, network capability information indicating whether the network supports usage of one or more constellation for transmission or reception of superimposed, SI symbols. The UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DLSIP. According to an aspect, there is provided an apparatus comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: transmitting, to a user device, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is applied to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and receiving, from a user device, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. According to an aspect there is provided an apparatus comprising circuitry configured to perform: transmitting, to a user device, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is applied to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and receiving, from a user device, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. According to an aspect there is provided a computer program comprising computer executable code which when run on at least one processor is configured to perform: transmitting, to a user device, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is applied to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols; and receiving, from a user device, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. According to an aspect, there is provided a computer readable medium comprising program instructions stored thereon for performing at least one of the above methods. According to an aspect, there is provided a non-transitory computer readable medium comprising program instructions stored thereon for performing at least one of the above methods. According to an aspect, there is provided a non-volatile tangible memory medium comprising program instructions stored thereon for performing at least one of the above methods. In the above, many different aspects have been described. It should be appreciated that further aspects may be provided by the combination of any two or more of the aspects described above. Various other aspects are also described in the following detailed description and in the attached claims. List of abbreviations Al: Artificial Intelligence BS: Base Station CDM code division multiplex CPE common phase error CU: Centralized Unit DeepRX DL: deep neural network receiver Downlink DM-RS demodulation reference signal ECC error correcting code gNB: gNodeB LLR log likelihood ratio MCS modulation and coding scheme MIMO multiple input-multiple output ML: Machine Learning MS : Mobile Station MU multi-user MTC : Machine Type Communication NR: New radio PAPR peak to average power ratio PDSCH physical downlink shared channel PUCCH physical uplink control channel PUSCH physical uplink shared channel QAM quadrature amplitude modulation RAM: Random Access Memory (R)AN: (Radio) Access Network RE resource element ROM: Read Only Memory RRC radio resource control RS reference signal SI superimposed SID superimposed data SIP superimposed pilots SU single-user TRP transmit receive point UE: User device UL: Uplink 5G: 5th Generation 5GC: 5G Core network 5GS: 5G System Brief Description of the Figures Embodiments will now be described, by way of example only, with reference to the accompanying Figures in which: Fig. 1 shows a schematic representation of a wireless communication system; Fig. 2 shows a schematic representation of a control apparatus; Fig. 3 shows a schematic representation of a user device; Fig. 4 shows an example of a flow diagram of a process, performed by a UE and a BS, for constellation(s) configuration, and / or SIP configuration, and their usage in data transmission and reception; Fig. 5 shows an example of the main blocks of a process, performed by a transmitter for a ZM constellation learning in SIP scheme; Fig. 6 shows an example of the main blocks of a receiver for processing the received learned SIP constellation with a neural receiver; Fig. 7 shows an example of a flow diagram of a process, performed by a UE and a BS, for constellation(s) configuration, and / or SIP configuration, and their usage in data transmission and reception; Fig. 8 shows an example of orthogonal (non-overlapping in the subcarrier dimension) SIP scheme for two-layer MIMO; Fig. 9 shows an example of orthogonal (non-overlapping in the time dimension) SIP scheme for two-layer MIMO; Fig. 10 shows an example of a flow diagram of a process, performed by a UE and a BS, for the orthogonal SIP configuration for MIMO layers; Fig. 11 shows an example of non-orthogonal (overlapping) SIP scheme for two-layer MIMO; Fig. 12 shows an example of a flow diagram of a process, performed by a UE and a BS, for the non-orthogonal SIP configuration for MIMO layers; Fig. 13 shows an example of a signalling diagram of a process, performed by a UE and a BS, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; Fig. 14 shows an example of a flow diagram of a process, performed by a UE and a BS, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; Fig. 15 shows an example of a block diagram of a method, performed by a user device, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; Fig. 16 shows an example of a block diagram of a method, performed by the base station, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; Fig. 17 shows an example of a block diagram of a method, performed by a user device, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; Fig. 18 shows an example of a block diagram of a method, performed by base station, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; Fig. 19 shows an example of a block diagram of a method, performed by a user device, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; Fig. 20 shows an example of a block diagram of a method, performed by base station, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception; and Fig. 21 shows a schematic representation of a non-volatile memory medium storing instructions which when executed by a processor allow a processor to perform one or more of the steps of the methods of Fig. 15 to Fig. 20. Detailed Description of the Figures In the following certain embodiments are explained with reference to mobile communication devices capable of communication via a wireless cellular system and mobile communication systems serving such mobile communication devices. Before explaining in detail the exemplifying embodiments, certain general principles of a wireless communication system, access systems thereof, and mobile communication devices are briefly explained with reference to Fig. 1, Fig.2, and Fig.3 to assist in understanding the technology underlying the described examples. FIG. 1 shows a schematic representation of a wireless communication environment 100, which may be a part of a communication network, comprises a terminal device 110 and a network device 120. To transmit data and / or control information, the terminal device 110 may perform communications with network device 120. The communication between the terminal device 110 and network device 120 may be direct or indirect. A link from network device 120 to the terminal device 110 is referred to as a downlink (DL), while a link from the terminal device 110 to network device 120 is referred to as an uplink (UL). The terminal device 110 and / or network device 120 may communicate with one or more further devices not shown in FIG. 1. In some embodiments, the wireless communication environment 100 may further comprise core network device 130. In this case, network device 120 may communicate with the core network device 130. Although the terminal device 110, network device 120, and the core network device 130 are described in the wireless communication environment 100 of FIG. 1, embodiments of the present disclosure may equally apply to any other suitable communication devices in communication with one another. That is, embodiments of the present disclosure are not limited to the exemplary scenarios of FIG. 1. In this regard, it is noted that although the terminal device 110 is schematically depicted as a mobile phone and network device 120 is schematically depicted as a base station in FIG. 1, it is understood that these depictions are exemplary in nature without suggesting any limitation. In other embodiments, the first device 110 and network device 120 may be any other communication devices, for example, any other wireless communication devices. The communications in the environment 100 may follow any suitable communication standards or protocols, which are already in existence or to be developed in the future, such as Universal Mobile Telecommunications System (UMTS), long term evolution (LTE), LTE-Advanced (LTE-A), the fifth generation (5G) New Radio (NR), 6G, Wireless Fidelity (Wi-Fi) and Worldwide Interoperability for Microwave Access (WiMAX) standards, and employs any suitable communication technologies, including, for example, Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM), time division multiplexing (TDM), frequency division multiplexing (FDM), code division multiplexing (CDM), Bluetooth, ZigBee, and machine type communication (MTC), enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable low latency communication (URLLC), Carrier Aggregation (CA), Dual Connectivity (DC), and New Radio Unlicensed (NR-U) technologies. Fig. 2 illustrates an example of a control apparatus 200 for controlling a function of the network device 120 illustrated on Fig. 1. The control apparatus may comprise at least one random access memory (RAM) 211a, at least on read only memory (ROM) 211b, at least one processor 212, 213 and an input / output interface 214. The at least one processor 212, 213 may be coupled to the RAM 211a and the ROM 211b. The at least one processor 212, 213 may be configured to execute an appropriate software code 215. The software code 215 may for example allow to perform one or more steps to perform one or more of the present aspects. The software code 215 may be stored in the ROM 211b. The control apparatus 200 may be interconnected with another control apparatus 200 controlling another function of the network device. In some embodiments, each function of the network device comprises a control apparatus 200. In alternative embodiments, two or more functions of the network device may share a control apparatus. Fig. 3 illustrates an example of a user device 300, such as the terminal device illustrated on Fig. 1. The user device 300 may be provided by any device capable of sending and receiving radio signals. Non-limiting examples comprise a user device, a mobile station (MS) or mobile device such as a mobile phone or what is known as a ’smart phone’, a computer provided with a wireless interface card or other wireless interface facility (e.g., USB dongle), a personal data assistant (PDA) or a tablet provided with wireless communication capabilities, a machine-type communications (MTC) device, an Internet of things (loT) device or any combinations of these or the like. The user device 300 may provide, for example, communication of data for carrying communications. The communications may be one or more of voice, electronic mail (email), text message, multimedia, data, machine data and so on. The user device 300 may receive signals over an air or radio interface 307 via appropriate apparatus for receiving and may transmit signals via appropriate apparatus for transmitting radio signals. In Fig. 3 transceiver apparatus is designated schematically by block 306. The transceiver apparatus 306 may be provided for example by means of a radio part and associated antenna arrangement. The antenna arrangement may be arranged internally or externally to the mobile device. The user device 300 may be provided with at least one processor 301, at least one memory ROM 302a, at least one RAM 302b and other possible components 303 for use in software and hardware aided execution of tasks it is designed to perform, including control of access to and communications with access systems and other communication devices. The at least one processor 301 is coupled to the RAM 302b and the ROM 302a. The at least one processor 301 may be configured to execute an appropriate software code 308. The software code 308 may for example allow to perform one or more of the present aspects. The software code 308 may be stored in the ROM 302a. The processor, storage and other relevant control apparatus can be provided on an appropriate circuit board and / or in chipsets. This feature is denoted by reference 304. The device may optionally have a user interface such as keypad 305, touch sensitive screen or pad, combinations thereof or the like. Optionally one or more of a display, a speaker and a microphone may be provided depending on the type of the device. In 5G NR, the Physical Uplink Shared Channel (PUSCH) and the Physical Downlink Shared Channel (PDSCH) are the physical uplink (UL) channel and downlink (DL) that carry user data. The Demodulation Reference Signal (DM-RS) is the reference signals associated with PUSCH. DM-RS is used for channel estimation as part of coherent demodulation of PUSCH and PDSCH. The time-frequency structure of reference signals depends on the type of waveform configured for PUSCH, as defined in TS 38.211 Sections 6.4.1.1 and 6.4.1.2. following the TS 38.300, DM-RS based spatial multiplexing is supported for PUSCH. Up to 8,12, 16, and 24 orthogonal UL DM-RS ports are supported for type 1, type 2, enhanced type 1, and enhanced type 2 DM-RS respectively. For a given User device (UE), up to 4 or up to 8 layer transmissions are supported. The DM-RS Uplink Configuration is sent in the Information Element (IE) DMRS-UplinkConfig and DMRS-DownlinkConfig of Radio Resource Control (RRC) configuration defined in TS 38.331, Clause 6.3.2. The DM-RS used in 5G for channel estimation, also called pilots, which are separated from the data transmission and are ideally orthogonalized among users. This type of approach is generically called in the literature as regular pilot (RP) approach, due to its orthogonality among users, it may arise pilot contamination issue, that arises when the number of users exceeds the number of pilot sequences and different users are being configured with the same pilot sequence, if to keep the orthogonality, more pilot sequences are needed to be inserted to meet the requirement of the increased users, it will lead to a degradation of spectral efficiency, as portions of the resources is allocated to pilot (known reference signal) transmission. One or more aspects of this document provide a solution to configure superimposed pilots (SIP) in a 6G UL transmission for deep UEs with the capability of learning / using irregular constellations and using said SIP in the gNB receiver for UL channel estimation and subsequent detection and decoding. One or more aspect of this document aims a solution to configure learning constellation and superimposed pilot, SIP configuration, transmission, and reception, higher spectral efficiency and capacity can be achieved by providing more orthogonal pilots and decreases the possibility of pilot reuse among different UEs. As for superimposed pilot, SIP transmission and / or reception, there are several terms need to be noted. Pilot symbol is the reference symbol which is generated based on the pilot constellation, modulation and the pilot sequence known both at the transmitted and the receiver. Data symbol is the symbols generated based on the data constellation and modulation (known to the transmitter and receiver) and the data sequence (known only at the transmitted). Superimposed (SI) symbol in which superimposition of pilot and data symbols transmitted in the same RE (i.e., pilot symbol is laid over / combined with data symbol with a power control on how to lay over them). Superimposed pilot (SIP) symbol is the pilot part of an SI symbol. Superimposed data (SID) symbol is the data part of an SI symbol. Superimposed pilot (SIP) transmission indicates the transmission for transmitting pilot and data over the same resource elements. Superimposed pilot (SIP) configuration is the configuration information for transmitting or receiving in SIP transmission. Fig. 4 shows an example of a flow diagram of a process, performed by a UE and a BS, for constellation(s) configuration, and / or SIP configuration, and their usage in data transmission and reception. At step 400, the UE may transmit, to the BS, a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. Wherein the UE capability comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, a support of frequency hopping, support of multiple CORESET, support of dynamic power SP, a support of ZM constellation, or a support of NZM constellation, support of IILSIP, and / or support of DL SIP. The UE may transmit the UE capability information in response to a request from the BS. The request is to ask for the user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. At step 402, the UE and the BS exchanges information associated with constellation(s) that natively embeds superimposed pilots, SIP, called henceforth native SIP constellation(s). the information associated with native SIP constellation(s) comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols. At step 404, the BS transmits a configuration comprising learned constellation(s) with native SIP embedding. The BS can also transmit another configuration comprising a separate learned constellation(s) for data and / or SIP transmission or reception. Wherein the configuration of learned constellation(s) with native SIP embedding or the configuration of the separate learned constellation comprises at least one of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. At step 406, the BS transmit a scheduling information for the transmission of the SIP symbols and data symbols. Wherein the scheduling information comprises at least one of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The indications of the REs indicate the plurality of REs in which SIP symbols are superimposed with data symbols. The indications may be an indication of a list of REs per layer or indications of indices of REs per layer where SIP symbols are superimposed with data symbols. The BS may indicate the pilot sequence of the SIP symbols. The configuration of the SIP symbols may comprise at least one of: a configuration type, a number of SI symbols, or a number of code division multiplex groups, CDM groups. For example, the pilot sequence may comprise value of the allocated SIP from the agreed SIP sequences. In another example, the pilot sequence may comprise seed values for sequence generation of bits and a pilot constellation. The BS may also indicate the power of the SIP symbols. The power allocation may comprise an indication of a Power of SIP symbols relative to a power of SID symbols or an indication of the absolute power of the SIP symbols. The indication of power of the SIP symbols relative to the power of SID symbols may be defined for all SI symbols and data symbols. It may be defined only for or each of the plurality of REs in which SIP symbols are superimposed with data symbols. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. At step 408, the transmitter either UE or BS applies learned constellation(s) and generates the SIP symbols and data symbols for transmission, in UL, the UE generates SIP symbols for UL transmission, and in DL, the BS generates SIP symbols for DLtransmission. The procedure in transmitter is shown in fig. 5. Fig. 5 shows an example of the main blocks of a process, performed by a transmitter for a ZM constellation learning in SIP scheme. In this embodiment, the SIP scheme supports Zero-Mean, ZM constellations, where the SIP symbols are generated using a known (probably regular) constellation e.g. QPSK, while the data symbols are modulated using a learned irregular ZM constellation. For non-zero mean, NZM constellation, the similar procedure is applied. At steps 500 and 502, the transmitter generates data symbols as per legacy UL transmission. At steps 504 and 506, the transmitter selects ZM constellation from a ZM set for data modulation. At step 508, the transmitter generates pilot sequence with the configured pilot sequence and using regular constellation, the SIP configuration may comprise the transmission layer information. The transmission layer information may comprise: an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transmission layer information may further comprise one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The indication of the REs indicates the plurality of REs in which SIP symbols are superimposed with data symbols. The power allocation comprises an indication of a power of the SIP symbols relative to a power of SI D symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; and / or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission of SIP symbols. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or a code dimension. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. Obtaining the transformation may comprise at least one of: obtaining the transformation based on a predefined configuration, obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. Then, the UE adjusts the power of SIP symbols based on the power allocation included in the SIP configuration. For example, the SIP configuration comprises a power allocation of SIP symbols. Wherein The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute Power of the SIP symbols in each of the plurality of REs. The power allocation may comprise an indication of a Power of SIP symbols relative to a power of SID symbols or an indication of the absolute power of the SIP symbols. The indication of power of the SIP symbols relative to the power of SID symbols may be defined for all SI symbols and data symbols. It may be defined only for or each of the plurality of REs in which SIP symbols are superimposed with data symbols. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. At steps 510, 512 and 514, the transmitter overlays the SIP symbols onto the data symbols, performing RE mapping and generates the OFDM / DFT-S-OFDM signal. At step 410, as shown in fig. 5 step 516, once the UL or DL signal is generated, the transmitter transmits the generated UL or DL signal i.e. SIP symbols and data symbols to the receiver. At step 410a, the UE as a transmitter transmits the SIP symbols with the UL data (i.e. UL signal) to the BS. At step 410b, in DL, the BS as a transmitter transmits the SIP symbols with the DL data as DL signal to the UE. At step 412, the receiverapplies neutral channel estimation and / or neutral detection to receive the UL or DL signal. In UL, the BS receives the UL signal, and in DL, the UE receives the DL signal. The procedure in receiver is shown in fig. 6. Fig. 6 shows an example of the main blocks of a BS receiver for processing the received learned SIP constellation with a neural receiver. At steps 600 and 602, the UL or DL signal comprises SIP symbols and data symbols. It is transmitted via wireless channel to the receiver. For UL transmission, the receiver is in the BS, and for DL transmission, the receiver is in the UE. At steps 604 and 606, the receiver performs demodulation and de-mapping as per legacy UL reception. At steps 612 and 614, the receiver generates constellation points for the SIP transmission using ZM constellation. It is noted that when NZM is used, the similar procedure is applied. At step 612, the receiver generates pilot sequence with the configured pilot sequence and using regular constellation, the SIP configuration may comprise the transmission layer information, the transmission layer information may comprise: an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols, the transmission layer information may further comprise one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The indication of the REs indicates the plurality of REs in which SIP symbols are superimposed with data symbols. The power allocation comprises an indication of a power of the SIP symbols relative to a power of SI D symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; and / or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission of SIP symbols. The pattern of the plurality of REs comprises at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or a code dimension. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. Obtaining the transformation may comprise at least one of: obtaining the transformation based on a predefined configuration, obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. Then, the receiver adjusts the power of SIP symbols based on the power allocation included in the SIP configuration. For example, the SIP configuration comprises a power allocation of SIP symbols. Wherein The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute Power of the SIP symbols in each of the plurality of REs. The power allocation may comprise an indication of a Power of SIP symbols relative to a power of SID symbols or an indication of the absolute power of the SIP symbols. The indication of power of the SIP symbols relative to the power of SID symbols may be defined for all SI symbols and data symbols. It may be defined only for or each of the plurality of REs in which SIP symbols are superimposed with data symbols. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. At step 614, the receiver selects a constellation from a ZM set. If NZM is used, the BS selects a constellation from a NZM set. At steps 608 and 610, The generated pilot sequence in step 612 and selected ZM constellation in step 614 are fed into neural receive as inputs, the receiver estimates UL bits based on the output of the neural receiver. It is noted that the neural receiver can have different architectures like convolutional neural networks (CNNs), residual neural networks (ResNets), or Transformers. Fig. 7 shows an example of a flow diagram of a process, performed by a UE and a BS, for constellation(s) configuration, and / or SIP configuration, and their usage in data transmission and reception. At step 700, the UE may transmit, to the BS, a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. Wherein the UE capability comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of ULSIP, and / or support of DL SIP. The UE may transmit the UE capability information in response to a request from BS. The request is to ask for a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. At step 702, the BS may transmit a configuration of a first set of constellations, wherein the first set of constellations may comprise one or more constellations with the SIP transmission. The configuration may comprise the learning one or more zero-mean (ZM) or non-zero mean (NZM) constellations of size 01, ..., ON, i.e., corresponding to the number of bits mapped to each constellation point, these one or more ZM or NZM constellations maybe given in an order. The order may be given in the explicit way e.g. indices of the order or implicit way via the position of the constellation in the one or more constellations. At step 704, the BS may transmit a SIP configuration on a plurality of Resource Elements, REs, wherein the SIP configuration may comprise a transmission layer information. The transmission layer information may comprise: an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transmission layer information may further comprise one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. Obtaining the transformation may comprise at least one of: obtaining the transformation based on a predefined configuration, obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The SIP configuration comprises a power allocation of SIP symbols. Wherein The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute Power of the SIP symbols in each of the plurality of REs. The power allocation may comprise an indication of a Power of SIP symbols relative to a power of SID symbols or an indication of the absolute power of the SIP symbols. The indication of power of the SIP symbols relative to the power of SID symbols may be defined for all SI symbols and data symbols. It may be defined only for or each of the plurality of REs in which SIP symbols are superimposed with data symbols. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. The configuration of the first set of constellations and / or the SIP configuration may be transmitted by the BS to UE in a same message or in two separate messages. As for constellation configuration, there may be one or more messages are used for possible separate configuration. At step 706, the transmitter learns constellations with the received first set of constellations and / or the SIP configuration, the transmitter (e.g. UE) may download from the UE vendor server the previously learned constellations as learned constellations, the transmitter performs procedure described in fig 5 to get one or more learned constellations based on the first set of constellations and / or the SIP configuration. At step 708, the transmitter may transmit a second set of constellations (e.g. learned constellations) as learned constellations to the receiver. E.g. the UE may transmit a second set of constellations (e.g. learned constellations) to the BS. At step 710, the receiver receives the second set of constellations and selects a third set of constellations (e.g. a preferred learned constellations) based on the received second set of constellations. The third set of constellations can be selected based on the second set of constellations. For example, the BS as a receiver to receive the second set of constellations and selects the third set of constellations from the second set of constellations. At step 712, the receiver may transmit a configuration of the third set of constellations to the transmitter. For example, the BS transmits a configuration of the third set of constellations to the UE. In an embodiment, the UE may select the third set of constellations by itself. The configuration of the first set of constellations, and / or the configuration of the third set of constellations comprises one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate. In case there are a plurality of constellations per layer, the configuration may also consist of a per-layer mapping between the constellation index and the indication of one or more REs for which said constellation to be used. The first set of constellations, the second set of constellations, and / or the third set of constellations comprise one or more constellations. The one or more constellations comprise non-zero-mean, NZM constellations or zero-mean ZM constellations. In case the second set of constellations have been stored at the gNB, the BS may transmit an updated information of the second set of constellations to UE before indicating the third set of constellations to UE. At step 714, the transmitter applies the configuration of the third set of constellations and / or the SIP configuration for the transmission of SIP symbols and data symbols, the details are shown in fig 5. At step 716, as shown in fig. 5 step 516, once the UL or DL signal is generated, the transmitter transmits the generated UL signal or DL signal i.e. SIP symbols and data symbols to the receiver. At step 716a, in UL, the UE as a transmitter transmits the SIP symbols with UL data as UL signal to the BS. At step 716b, in DL, the BS as a transmitter transmits the SIP symbols with DL data as DL signal to the UE. At step 718, the receiverapplies neutral channel estimation and / or neutral detection to receive UL or DL signal. The detailed procedure is shown in fig 6. In the SIP scheme, the SIP symbols are superimposed with data symbols in indicated REs. There are several ways to superimpose the SIP symbols to data symbols. In an orthogonal SIP scheme, SIP symbols from all layers are not overlapped in REs, which means an RE never has SIP symbols from more than one MIMO layer. In a non-orthogonal SIP scheme, SIP symbols from all layers are overlapped in REs, but the SIP symbol is transformed differently per layer. In an orthogonal SIP scheme, an SI pattern may be designed so that the same RE never has SIP from more than one MIMO layer. The pattern of SI symbols may comprise at least one of: alternating SI symbols assignments in a subcarrier dimension; alternating SI symbols assignments in a time dimension; alternating SI symbols assignments in a code dimension; or alternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or a code dimension. The pattern of SI symbols may be identified based on a user device identifier, a cell identifier and / or an antenna identifier. Fig. 8 shows an example of orthogonal (non-overlapping in the subcarrier dimension) SIP scheme for two-layer MIMO. In this embodiment, the two MIMO layers use different subcarrier set. In layer 1, odd subcarriers are used to transmit the SI symbols while other subcarriers are used for data transmission. In layer 2, even subcarriers are used for SI symbols transmission while other subcarriers are for data symbols transmission. It is noted that, it may use different subcarrier set for SIP transmission in layer 1 and layer 2, the only condition is that the two subcarrier sets are not overlapping in subcarrier dimension. For MIMO with higher number of layers, M, where the M is a positive integer, for example, M is 2,4,8,12,16, and 24 or more. There may be M non-overlapping subcarrier sets to provide orthogonality in the subcarrier for M-layer MIMO. Fig. 9 shows an example of orthogonal (non-overlapping in the time dimension) SIP scheme for two-layer MIMO. In this embodiment, the two MIMO layers use different time pattern. In layer 1, even symbols are used to transmit the SI symbols while other symbols are used for data transmission. In layer 2, odd symbols are used for SI symbols transmission while other symbols are for data symbols transmission. It is noted that, it may use different time patterns for SI transmission in layer 1 and layer 2, the only condition is that the time patterns are not overlapping in time dimension. For MIMO with higher number of layers, M, where the M is a positive integer, for example, M is 2,4,8,12,16, and 24 or more. There may be M non-overlapping time patterns to provide orthogonality in the time dimension for M-layer MIMO. The BS may decide the SIP allocation based on the scheduling decisions, utilizing predefined SI patterns. The BS may signal the chosen pattern to the UE via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or more Downlink Control Information, DCI, after which the UE can construct the PUSCH signal comprising SIP symbols. In case, BS is the transmitter, the BS construct the PDSCH signal comprising SIP symbols according to the chosen pattern. When the MIMO layer allocation of the UE is changed, the BS may provide updated SIP configuration parameters to the UE. in case the UE is the transmitter, the UE products PUSCH based on the updated SIP configuration. In case BS is the transmitter, the BS products PDSCH based on the updated SIP configuration. The produced PUSCH and / or PDSCH may comprising SIP symbols generated based on the updated SIP configuration. Fig. 10 shows an example of a flow diagram of a process, performed by a UE and a BS, for the orthogonal SIP configuration for MIMO layers. It is noted that a single learned shared constellation can be used by all layers or separately learned constellations can be used per layer. In one example, per-layer SPs are alternated in different sub-carriers (SCs) as shown in fig 8 or in different time pattern as shown in fig 9. At step 1000, the BS makes a scheduler decision on MIMO layers allocation for the UE, which is used to determine the SIP configuration, e.g. utilizing predefined pattern for the plurality of REs. The pattern can be based on alternating SI symbols assignments in the subcarrier dimension, in a time dimension, in a code dimension and / or in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension. At step 1002, the BS transmits a configuration of a fourth set of constellations and / or a SIP configuration based on current MIMO layer allocation to the UE. The fourth set of constellations may be same as the third set of constellations or may be an update of the third set of constellations. The configuration of the fourth set of constellations may comprise one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; and / or an indication of code rate. The fourth set of constellations comprises one or more constellations, the one or more constellations comprise non-zero-mean, NZM constellations or zero-mean, ZM constellations. The configuration of the SIP configuration may comprise a transformation layer information. The transmission layer information may further comprise one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The indication of the REs indicates the plurality of REs in which SIP symbols are superimposed with data symbols. The power allocation comprises an indication of a power of the SIP symbols relative to a power of SI D symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; and / or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission of SIP symbols. The SIP configuration may further comprise a power allocation of SIP symbols. Wherein the power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute Power of the SIP symbols in each of the plurality of REs. The power allocation may comprise an indication of a Power of SIP symbols relative to a power of SID symbols or an indication of the absolute power of the SIP symbols. The indication of power of the SIP symbols relative to the power of SID symbols may be defined for all SI symbols and data symbols. It may be defined only for or each of the plurality of REs in which SIP symbols are superimposed with data symbols. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. The pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier. At step 1004, the transmitter applies the configuration of the fourth set of constellations and / or the SIP configuration for the transmission or reception of the SI symbols and data symbols, the details are shown in fig 5. At step 1006, as shown in fig. 5 step 516, once the signal is generated, the transmitter transmits the generated signal i.e. SIP symbols and data symbols to the receiver. At step 1006a, the UE as a transmitter transmits SIP symbols with UL data as UL signal e.g. PUSCH signal to the BS. At step 1006b, the BS as a transmitter transmits SIP symbols with DL data as DL signal e.g. PDSCH signal to the UE. At steps 1008 and 1010, when the BS changes the layer allocation of the UE, the BS transmits a configuration of the revised SIP configuration. At step 1012, the transmitter applies the revised SIP configuration for the transmission of the SIP symbols and data symbols, the details are shown in fig 5. At step 1014, as shown in fig. 5 step 516, once the signal is generated, the transmitter transmits the generated signal i.e. SIP symbols and data symbols to the receiver. At step 1014a, in UL, the UE as a transmitter transmits UL signal e.g. PUSCH signal based on the revised SIP configuration to the BS. At step 1014b, in DL, the BS as a transmitter transmits DL signal e.g. PDSCH signal based on the revised SIP configuration to the UE. Fig. 11 shows an example of non-orthogonal (overlapping) SIP scheme for two-layer MIMO; In this embodiment, SIP symbols from all layers are overlapped in REs, but the SIP symbols are transformed differently per layer. A transmission layer information is signalled from BS to UE. The transmission layer information may comprise an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to the SIP symbols. The indication of a rotation, for example, the rotation difference between the constellation and the SIP, can be utilized by the receiver to determine the SIP symbols. In another embodiment, the BS may signal the transmission layer information e.g. transformation of a SIP pattern. The SIP pattern may be transmitted along with the SI symbol pattern and the power level. The SI symbol pattern is applied to the plurality of REs and the SIP pattern is applied to transformation. For example, a gNB configures [1+1j, 1-1 j] as the SIP pattern, then layer 1 may use this pattern directly, while layer 2 may use a transformed version of this pattern as [1+1j, -1+1 j]. A BS may configure such transformation with sharing vector [1, -1], where elementwise multiplication of this vector with the SIP pattern of layer 1 ([1+1 j, 1 -1 j]) results the SIP pattern for layer 2. The transmission layer information can be based on a look-up table of predefined options, or it can be based on an arbitrary function that the BS can provide to the UE. Once having received the configuration, the UE can transmit PUSCH data with the SIP symbols e.g. SIP or the BS can transmit PDSCH data with the SIP symbols as well. It should be noted that the transmission layer information might depend on the number of spatially multiplexed UEs, which means that the allocation can change from one slot to another. Therefore, the BS should have the means to carry this information in the control channel, like other scheduling-related information. It can be carried via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or more Downlink Control Information, DCI. Fig. 12 shows an example of a flow diagram of a process, performed by a UE and a BS, for the non-orthogonal SIP configuration for MIMO layers. It is noted that a single learned shared constellation can be used by all layers or separately learned constellations can be used per layer. In this embodiment, SIP symbols from all layers are overlapped in REs, but the SIP symbols are transformed differently per layer. At step 1200, the BS makes a scheduler decision on MIMO layers allocation for the UE which is used to determine the SIP configuration, e.g. transmission layer information, it may comprise layer-specific SIP transformation per UE. At step 1202, the BS transmits a configuration of a fifth set of constellations and / or a SIP configuration based on current MIMO layer allocation to the UE. The fifth set of constellations may be same as the third set of constellations or an update of the third set of constellations. The configuration of the fifth set of constellations may comprise one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; and / or an indication of code rate. The fifth set of constellations comprises one or more constellations, the one or more constellations comprises non-zero-mean, NZM constellations or zero-mean, ZM constellations. The configuration of the SIP configuration may comprise a transformation layer information. The transmission layer information may comprise an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transformation is obtained by at least one of obtaining the transformation based on a predefined configuration; obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The indication of the REs indicates the plurality of REs in which SIP symbols are superimposed with data symbols. The power allocation comprises an indication of a power of the SIP symbols relative to a power of SI D symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; and / or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission or reception of the SI symbols. The SIP configuration may further comprise a power allocation. Wherein The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute Power of the SIP symbols in each of the plurality of REs. The power allocation may comprise an indication of a Power of SIP symbols relative to a power of SID symbols or an indication of the absolute power of the SIP symbols. The indication of power of the SIP symbols relative to the power of SID symbols may be defined for all SI symbols and data symbols. It may be defined only for or each of the plurality of REs in which SIP symbols are superimposed with data symbols. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. At step 1204, the transmitter applies the configuration of the fifth set of constellations and / or the SIP configuration for the transmission of the SIP symbols and data symbols, the details are shown in fig 5. At step 1206, as shown in fig. 5 step 516, once the signal is generated, the transmitter transmits the generated signal i.e. SIP symbols and data symbols to the receiver. At step 1206a, the UE as a transmitter transmits SIP symbols with UL data as UL signal e.g. PUSCH signal to the BS. At step 1006b, the BS as a transmitter transmits SIP symbols with DL data as DL signal e.g. PDSCH signal to the UE. At steps 1208 and 1210, when the BS changes the layer allocation of the UE, the BS transmits a configuration of the revised SIP configuration. At step 1212, the transmitter applies the revised SIP configuration for the transmission of the SIP symbols and data symbols, the details are shown in fig 5. At step 1214, as shown in fig. 5 step 516, once the UL or DL signal is generated, the transmitter transmits the generated signal i.e. SIP symbols and data symbols to the receiver. At step 1214a, the UE as a transmitter transmits SIP symbols with UL data as UL signal e.g. PUSCH signal to the BS. At step 1006b, the BS as a transmitter transmits SIP symbols with DL data as DL signal e.g. PDSCH signal to the UE. Fig. 13 shows an example of a signalling diagram of a process, performed by a UE and a BS, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 1300, the BS may transmit, to the UE, a request to receive UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. Wherein the UE capability comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, a support of frequency hopping, support of multiple CORESET, support of dynamic power SP, a support of ZM constellation, or a support of NZM constellation, support of UL SIP, and / or support of DL SIP. At step 1302, UE may transmit a response comprising UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. The response may comprise at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DL SIP. For example, the UE capability indicating whether the UE supports a learning of constellation, an example of potential UE capability configuration: phy-ParametersFRX-Diff { supported I rregConstSP-TypeUL typel, pucch-F2-WithFH supported, pucch-F3-WithFH supported, pucch-F1 -3-4WithoutFH notSupported, almostContiguousCP-OFDM-UL supported, multipleCORESET supported, pilotPluseZeroMeanConst supported, nonZeroMeanConst supported, }, At step 1304, the BS and the UE may perform the process of Fig 4 or Fig 7. Fig. 14 shows an example of a flow diagram of a process, performed by a UE and a BS, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 1400, the BS may transmit, to the UE, a configuration of a first set of constellations, wherein the first set of constellations is to obtain a second set of constellations. At step 1402, the UE may obtain by itself or receive from the BS, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI, symbols on a plurality of resource elements, REs. The SIP configuration may comprise transmission layer information associated with one or more constellations for transmission or reception of the SI symbols. The configuration of the SIP configuration may comprise a transformation layer information, the transmission layer information may comprise an indication of a rotation to be applied to determine the SIP symbols; and / or an indication of a transformation to be applied to of the SIP symbols. The transformation is obtained by at least one of obtaining the transformation based on a predefined configuration; obtaining the transformation based on a function indicated by the base station; or receiving, from the base station, an indication of the transformation to be applied to the SIP symbols. The transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols. The indication of the REs indicates the plurality of REs in which SIP symbols are superimposed with data symbols. The power allocation comprises an indication of a power of the SIP symbols relative to a power of SID symbols in each of the each of the plurality of REs or an indication of an absolute power of the SIP symbols in each of the plurality of REs. The pattern comprising: a pattern of the plurality of REs applicable to each of a plurality of transmission layers; and / or an indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission of SIP symbols. The SIP configuration may further comprise a power allocation. Wherein The power allocation comprises an indication of a power of SIP symbols relative to a power of superimposed data, SID symbols in each of the each of the plurality of REs or an indication of an absolute Power of the SIP symbols in each of the plurality of REs. The power allocation may comprise an indication of a Power of SIP symbols relative to a power of SID symbols or an indication of the absolute power of the SIP symbols. The indication of power of the SIP symbols relative to the power of SID symbols may be defined for all SI symbols and data symbols. It may be defined only for or each of the plurality of REs in which SIP symbols are superimposed with data symbols. The power of the SIP symbols can be configured statically or dynamically via one or more Radio Resource Control, RRC messages, or one or more Medium Access Control Control elements, MAC CEs, or one or mor Downlink Control Information, DCI. At step 1404, upon receiving the configuration of the first set of constellations and / or the SIP configuration, the UE obtains the second set of constellations. The second set of constellations may be a learned set of constellations. It may be learned by UE itself or the UE can download from the UE vendor server the previously learned. The configuration of the second set of constellations may comprise at least one of one or more of: an index of the constellation; a list of indices of the constellations; a power allocation of SIP symbols; a number of layers; an indication of REs; an indication of code rate; or a per-layer mapping between the constellation index and indication of REs for which said constellation is to be used. The second set of constellations comprises one or more constellations. The one or more constellations comprises non-zero-mean, NZM constellations or zero-mean, ZM constellations. At step 1406, the UE transmits the second set of constellations to the BS based on the received first set of constellations and / or SIP configuration. At step 1408, the BS receives the second set of constellations and selects a third set of constellations (e.g. a preferred learned constellations) according to the received second set of constellations. The third set of constellations is selected based on the second set of constellations. Fig. 15 shows an example of a block diagram of a method, performed by a user device, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 1500, a UE may receive, from a BS, a configuration of a first set of constellations, wherein the first set of constellations is to determine transmission or reception of Superimposed, SI symbols. At step 1502, the UE may transmit, to the BS, the SI symbols based on the configuration of the first set of constellations. And / or the UE may receive, from the BS, the SI symbols based on the configuration of the first set of constellations. Fig. 16 shows an example of a block diagram of a method, performed by the base station, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 1600, a BS may transmit, to a UE, a configuration of a first set of constellations, wherein the first set of constellations is to determine transmission or reception of Superimposed, SI symbols. At step 1602, the BS may receive, from the UE, the SI symbols based on the configuration of the first set of constellations. And / or the BS may transmit, to the UE, the SI symbols based on the configuration of the first set of constellations. Fig. 17 shows an example of a block diagram of a method, performed by a user device, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 1700, a UE may receive, from a BS, a request to receive UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. As step 1702, the UE may transmit, to the BS, the UE capability information. Fig. 18 shows an example of a block diagram of a method, performed by base station, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 1800, a BS may transmit, to a UE, a request to receive UE capability information indicating whether the user equipment supports usage of one or more constellations for transmission or reception of superimposed, SI symbols. At step 1802, the BS may receive, from the UE, the UE capability information. Fig. 19 shows an example of a block diagram of a method, performed by a user device, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 1900, a UE may receive, from a BS, a configuration of a first set of constellations, wherein the first set of constellations is to obtain a second set of constellations; and / or At step 1902, the UE may obtain, by the UE, a superimposed pilot, SIP, configuration for a transmission of superimposed, SI, symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols. At step 1904, the UE may transmit, to the BS, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. Fig. 20 shows an example of a block diagram of a method, performed by base station, for constellation configuration(s), and / or SIP configuration, and their usage in data transmission and reception. At step 2000, a BS may transmit, to a UE, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for a transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols. At step 2002, the BS may receive, from the UE, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration. Fig. 21 shows a schematic representation of a non-volatile memory medium storing instructions which when executed by a processor allow a processor to perform one or more of the steps of the methods of Fig. 15 to Fig. 20. It is noted that while the above describes example embodiments, there are several variations and modifications which may be made to the disclosed solution without departing from the scope of the present invention. The embodiments may thus vary within the scope of the attached claims. In general, some embodiments may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although embodiments are not limited thereto. While various embodiments may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as nonlimiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof. The embodiments may be implemented by computer software stored in a memory and executable by at least one data processor of the involved entities or by hardware, or by a combination of software and hardware. Further in this regard it should be noted that any procedures, e.g., as in Fig. 15 to Fig. 20, may represent program steps, or interconnected logic circuits, blocks and functions, or a combination of program steps and logic circuits, blocks and functions. The software may be stored on such physical media as memory chips, or memory blocks implemented within the processor, magnetic media such as hard disk or floppy disks, and optical media such as for example DVD and the data variants thereof, CD. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory. The data processors may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), application specific integrated circuits (ASIC), gate level circuits and processors based on multi-core processor architecture, as non-limiting examples. Alternatively or additionally some embodiments may be implemented using circuitry. The circuitry may be configured to perform one or more of the functions and / or method steps previously described. That circuitry may be provided in the base station and / or in the communications device. As used in this application, the term “circuitry” may refer to one or more or all of the following: (a) hardware-only circuit implementations (such as implementations in only analogue and / or digital circuitry); (b) combinations of hardware circuits and software, such as: (i) a combination of analogue and / or digital hardware circuit(s) with software / firmware and (ii) any portions of hardware processor(s) with software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as the communications device or base station to perform the various functions described; and (c) hardware circuit(s) and or processor(s), such as a microprocessor(s) or a portion of a microprocessor(s), that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation. This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example integrated device. The foregoing description has provided by way of exemplary and non-limiting examples a full and informative description of some embodiments However, various modifications and adaptations may become apparent to those skilled in the relevant arts in view of the foregoing description, when read in conjunction with the accompanying drawings and the appended claims. However, all such and similar modifications of the teachings will still fall within the scope as defined in the appended claims.

Claims

1. A user device comprising:means for receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to obtain a second set of constellations;and / ormeans for obtaining, by a user device, a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols;means for transmitting, to a base station, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration.

2. The user device of claims 1, further comprising:means for obtaining, by a user device, a configuration of a third set of constellations, wherein the third set of constellations is applied to determine the transmission or reception of SI symbols;means for transmitting, to a base station, the SI symbols based on the configuration of the first set of constellations; and / ormeans for receiving, from a base station, the SI symbols based on the configuration of the first set of constellations.

3. The user device of claim 2, wherein obtaining the configuration of the third set of constellations comprising:means for receiving, from the base station, the configuration of the third set of constellations; and / ormeans for determining, by the user device, the configuration of the third set of constellations.

4. The user device of any of claim 1- 3, wherein the configuration of the first set of constellations, and / or the configuration of the third set of constellations comprises one or more of:an index of the constellation;a list of indices of the constellations;a power allocation of SIP symbols;a number of layers;an indication of REs;an indication of code rate; ora per-layer mapping between the constellation index and indication of REs for which said constellation is to be used.

5. The user device of any of claims 1-4, further comprising:the third set of constellations is selected based on the second set of constellations.

6. The user device of claim 1, wherein the transformation layer information comprising:an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / oran indication of a transformation to be applied to of the SIP symbols.

7. The user device of claims 1 or claim 6, further comprising:obtaining the transformation based on a predefined configuration.obtaining the transformation based on a function indicated by the base station; orreceiving, from the base station, an indication of the transformation to be applied to the SIP symbols.

8. The user device of claim 1, claim 6 or claim 7, wherein the transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols.

9. The user device of claims 8, wherein the REs indicate the REs where the SIP symbols are superimposed with data symbols or the data symbols comprise information associated with SIP symbols.

10. The user equipment of claim 8, wherein the pattern comprising:a pattern of the plurality of REs applicable to each of a plurality of transmission layers; and / oran indication of one or more transmission layers where the pattern of the plurality of REs are for the transmission or reception of the SI symbols.

11. The user device of claim 8 or claim 10, wherein the pattern of the plurality of REs is identified based on a user equipment identifier, a cell identifier and / or an antenna identifier.

12. The user device of any of claim 8 or claims 10-11, wherein the pattern of the plurality of REs comprises at least one of:alternating SI symbols assignments in a subcarrier dimension;alternating SI symbols assignments in a time dimension;alternating SI symbols assignments in a code dimension; oralternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension.

13. The user device of any of claim 1-12, further comprising:means for receiving, from the base station, a request to receive a user equipment, UEcapability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols;means for transmitting, to the base station, the user equipment, UE capability information.

14. The user device of claim 13, wherein the UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DL SIP.

15. An apparatus comprising:means for transmitting, to a user device, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is applied to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols;means for receiving, from a user device, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration.

16. The apparatus of claims 15, further comprising:means for transmitting, to a user device, a configuration of a third set of constellations, wherein the third set of constellations is applied to determine the transmission or reception of Superimposed, SI symbols;means for receiving, from a user device, the SI symbols based on the configuration of the third set of constellations; and / ormeans for transmitting, to a user device, the SI symbols based on the configuration of the third set of constellations.

17. The apparatus of claim 15 or claim 16, wherein the configuration of the first set of constellations, and / or the configuration of the third set of constellations comprises one or more of:an index of the constellation;a list of indices of the constellations;a power allocation of SIP symbols;a number of layers;an indication of REs;an indication of code rate; ora per-layer mapping between the constellation index and indication of REs for which said constellation is to be used.

18. The base station of claims 15-17, further comprising:the third set of constellations is selected from the second set of constellations.

19. The user equipment of claims 15, wherein the transmission layer information comprising:an indication of a rotation to be applied to determine superimposed pilot, SIP symbols; and / oran indication of a transformation to be applied to of the SIP symbols.

20. The apparatus of claim 15 or claim 19, wherein the transmission layer information further comprises one or more of: indication of the REs, a pattern for the plurality of REs, and / or a power allocation of SIP symbols.

21. The apparatus of claim 20, wherein the pattern of the plurality of REs comprises at least one of:alternating SI symbols assignments in a subcarrier dimension;alternating SI symbols assignments in a time dimension;alternating SI symbols assignments in a code dimension; oralternating SI symbols assignments in a combination of at least two dimensions among a subcarrier dimension, a time dimension, or the code dimension.

22. The apparatus of any of claim 15-21, further comprising:means for transmitting, to the user device, a request to receive a user equipment, UE capability information indicating whether the user device supports usage of one or more constellations for transmission or reception of superimposed, SI symbols.means for receiving, from the user device, the user equipment, UE capability information.

23. The apparatus of claim 22, wherein the UE capability information further comprises at least one of: one or more SIP types, one or more SIP constellation types, one or more SIP lengths, one or more PUCCH formats, support of frequency hopping, support of multiple CORESET, support of dynamic power SIP, support of ZM constellation, support of NZM constellation, support of UL SIP, and / or support of DL SIP.

24. A method comprising:receiving, from a base station, a configuration of a first set of constellations, wherein the first set of constellations is applied to obtain a second set of constellations; and / orobtaining, by a user device, a superimposed pilot, SIP, configuration for transmission5 or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols;transmitting, to a base station, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration.1025. A method comprising:transmitting, to a user device, a configuration of a first set of constellations and / or a superimposed pilot, SIP, configuration for transmission or reception of superimposed, SI symbols on a plurality of resource elements, REs, wherein the first set of constellations is15 applied to obtain a second set of constellation and the SIP configuration comprises transmission layer information associated with one or more constellations for transmission or reception of the SI symbols;receiving, from a user device, the second set of constellations based on the configuration of the first set of constellations and / or the SIP configuration.

Images