阅读说明：本技术 确定辅小区组附加最大功率降低和配置最大功率的方法和装置 (Method and device for determining auxiliary cell group additional maximum power reduction and configuring maximum power ) 是由 科林·弗兰克 于 2020-02-22 设计创作，主要内容包括：一种方法和装置,其规定：接收(202)用于主小区组上的传输的资源块的上行链路资源分配的指示。接收(204)用于辅小区组上的传输的资源块的上行链路资源分配的指示。基于用于主小区组上的传输的资源块的分配的指示和用于辅小区组上的传输的资源块的分配的指示,确定(206)总附加最大功率降低。确定(208)辅小区组的剩余功率。将辅小区组附加最大功率降低确定(210)为用信号通知的最大辅小区组功率与该辅小区组的剩余功率之间的差。针对该辅小区组确定(212)配置最大功率。(A method and apparatus that provides for: an indication of an uplink resource allocation of resource blocks for transmission on a master cell group is received (202). An indication of an uplink resource allocation of resource blocks for transmission on a secondary cell group is received (204). Determining (206) a total additional maximum power reduction based on the indication of the allocation of resource blocks for transmissions on the primary cell group and the indication of the allocation of resource blocks for transmissions on the secondary cell group. The remaining power of the secondary cell group is determined (208). Determining (210) a secondary cell group additional maximum power reduction as a difference between the signaled maximum secondary cell group power and a remaining power of the secondary cell group. A configured maximum power is determined (212) for the secondary cell group.)

1. A method, comprising:

receiving an indication of an uplink resource allocation of resource blocks for transmission on a master cell group;

receiving an indication of an uplink resource allocation of resource blocks for transmission on a secondary cell group;

determining a total additional maximum power reduction based on the indication of uplink resource allocation of resource blocks for transmissions on the primary cell group and the indication of uplink resource allocation of resource blocks for transmissions on the secondary cell group;

determining a remaining power of the secondary cell group by reducing the signaled maximum dual carrier power by the total additional maximum power reduction and subtracting a configured master cell group power;

determining a secondary cell group additional maximum power reduction as a difference between a signaled maximum secondary cell group power and the remaining power of the secondary cell group; and

determining a configured maximum power for the secondary cell group based on the determined secondary cell group additional maximum power reduction.

2. The method of claim 1, wherein a secondary cell group transmission can be discarded if the determined remaining power of the secondary cell group is negative.

3. The method of claim 1, wherein an additional maximum power reduction of the secondary cell group is defined as infinity if the determined remaining power of the secondary cell group is negative.

4. The method of claim 1, wherein the configured maximum power for the secondary cell group is used to determine a configured power for the secondary cell group.

5. The method of claim 4, wherein a power spectral density of the secondary cell group is calculated as a ratio of the configured power of the secondary cell group to a number of allocated resource blocks for transmission on the secondary cell group.

6. The method of claim 5, wherein a ratio of the power spectral density of the secondary cell group to the power spectral density of the master cell group is compared to a threshold and if an absolute value of the ratio exceeds the threshold, the transmission on the secondary cell group is dropped.

7. The method of claim 5, wherein a ratio of a power spectral density of the secondary cell group to a power spectral density of the master cell group is compared to a threshold and transmissions on the secondary cell group are scaled until an absolute value of the ratio of the power spectral density of the secondary cell group to the power spectral density of the master cell group equals the threshold.

8. The method of claim 5, wherein a threshold of a maximum ratio of a power spectral density of the secondary cell group to a power spectral density of the primary cell group is signaled to the user equipment.

9. The method of claim 1, wherein transmissions on the master cell group and transmissions on the secondary cell group are in-band.

10. A user equipment in a communication network, the user equipment comprising:

a transceiver that receives an indication of an uplink resource allocation of resource blocks for transmissions on a primary cell group and that receives an indication of an uplink resource allocation of resource blocks for transmissions on a secondary cell group; and

a controller, coupled to the transceiver, that determines a total additional maximum power reduction based on an indication of an uplink resource allocation of resource blocks for transmissions on the primary cell group and an indication of an uplink resource allocation of resource blocks for transmissions on the secondary cell group;

wherein the controller additionally determines a remaining power of the secondary cell group by reducing the signaled maximum dual carrier power by the total additional maximum power reduction and subtracting a configured primary cell group power;

wherein the controller additionally determines a secondary cell group additional maximum power reduction as a difference between a signaled maximum secondary cell group power and the remaining power of the secondary cell group; and

wherein the controller additionally determines a configured maximum power for the secondary cell group based on the determined secondary cell group additional maximum power reduction.

11. The user equipment of claim 10, wherein a secondary cell group transmission can be discarded if the determined remaining power of the secondary cell group is negative.

12. The user equipment of claim 10, wherein an additional maximum power reduction for the secondary cell group is defined as infinity if the determined remaining power for the secondary cell group is negative.

13. The user equipment of claim 10, wherein the configured maximum power for the secondary cell group is used to determine a configured power for the secondary cell group.

14. The user equipment of claim 13, wherein a power spectral density of the secondary cell group is calculated as a ratio of the configured power of the secondary cell group to a number of allocated resource blocks for transmissions on the secondary cell group.

15. The user equipment of claim 14, wherein a ratio of the power spectral density of the secondary cell group to the power spectral density of the master cell group is compared to a threshold and if an absolute value of the ratio exceeds the threshold, the transmission on the secondary cell group is dropped.

16. The user equipment of claim 14, wherein a ratio of a power spectral density of the secondary cell group to a power spectral density of the master cell group is compared to a threshold and transmissions on the secondary cell group are scaled until an absolute value of the ratio of the power spectral density of the secondary cell group to the power spectral density of the master cell group equals the threshold.

17. The user equipment of claim 14, wherein a threshold of a maximum ratio of the power spectral density of the secondary cell group to the power spectral density of the primary cell group is signaled to the user equipment.

18. The user equipment of claim 10, wherein transmissions on the master cell group and transmissions on the secondary cell group are in-band.

Technical Field

The present disclosure relates to a method and apparatus for determining a Secondary Cell Group (SCG) additional maximum power reduction (a-MPR) and configuring a maximum power (Pcmax), including SCG a-MPR and Pcmax for dual connectivity with dynamic power sharing and Master Cell Group (MCG) prioritization.

Background

Currently, user equipment, such as wireless communication devices, communicate with other communication devices using wireless signals, such as within a network environment that may include one or more cells within which various communication connections with the network and other devices operating within the network may be supported. A network environment typically involves one or more sets of standards, each set of standards defining aspects of any communication connections made using a corresponding standard within the network environment. Examples of developing and/or existing standards include New radio Access technology (NR), evolved Universal terrestrial radio Access (E-UTRA), Long Term Evolution (LTE), Universal Mobile Telecommunications Service (UMTS), Global System for Mobile communications (GSM), and/or Enhanced Data GSM Environment (EDGE).

To support greater data throughput, service providers are increasingly considering techniques to extend the available bandwidth allowed to be used by specific users within the system. At least several bandwidth extension techniques include the use of carrier aggregation, dual carrier and/or dual connectivity, where multiple frequency bands from one or more networks are selected to operate together. For example, by utilizing more than one carrier through carrier aggregation, it is possible to increase the total transmission bandwidth associated with a particular data channel and correspondingly enhance the data capacity of that channel. Additionally and/or alternatively, the dual-carrier or multi-carrier approach may allow two or more spectrum allocations to be paired and/or used in parallel, including spectrum allocations that may alternatively be associated with different standards and/or radio access technologies, which may also be used to support the ability for enhanced and/or more robust data throughput.

Such possibilities may better support the initial phase of the construction of an initially deployed network incorporating a particular standard, where the area coverage of emerging standards may not be complete at least initially. During such transition periods, it may be beneficial to better support the transition to an emerging standard by allowing bearers of the new standard to be supported in conjunction with the infrastructure of a more mature or previously established standard, and/or to supplement the coverage of the emerging standard with coexisting communications using more established standards.

In at least some cases, the network infrastructure supporting each standard may alternatively be referred to as a cell group. In some of these cases, one cell group may be prioritized over another cell group. In such cases, the prioritized cell group may be referred to as a master cell group, and the non-prioritized cell group may be referred to as a secondary cell group.

In situations where there are multiple connections, where in some cases separate connections may involve connections to different network infrastructures, managing the overall operation of communication connections in a particular user device with respect to potentially multiple networks may present challenges, as some decisions may need to be made in environments where each participant may have incomplete information.

The inventors have realised that where the existing specifications may provide that the secondary cell group knows the resource block allocation of the master cell group in order for the secondary cell group to calculate the additional maximum power reduction, it may be reasonable to expect the secondary cell group to also know the configuration power of the master cell group, which in turn may allow knowledge of the configuration power of the master cell group to be subsequently used as part of calculating the additional maximum power reduction of the secondary cell group.

Disclosure of Invention

The present application provides a method in a user equipment. The method comprises receiving an indication of an uplink resource allocation of resource blocks for transmission on a group of master cells. An indication of an uplink resource allocation of resource blocks for transmission on a secondary cell group is received. The total additional maximum power reduction is determined based on an indication of uplink resource allocation of resource blocks for transmissions on the primary cell group and an indication of uplink resource allocation of resource blocks for transmissions on the secondary cell group. The remaining power of the secondary cell group is determined by reducing the signaled maximum dual carrier power by the total additional maximum power reduction and subtracting the configured master cell group power. The secondary cell group additional maximum power reduction is determined as a difference between the signaled maximum secondary cell group power and a remaining power of the secondary cell group. Determining a configured maximum power for the secondary cell group based on the determined secondary cell group additional maximum power reduction.

According to another possible embodiment, a user equipment in a communication network is provided. The user equipment comprises a transceiver that receives an indication of an uplink resource allocation of resource blocks for transmissions on a primary cell group and receives an indication of an uplink resource allocation of resource blocks for transmissions on a secondary cell group. The user equipment also includes a controller, coupled to the transceiver, that determines a total additional maximum power reduction based on the indication of the uplink resource allocation of the resource blocks for transmissions on the primary cell group and the indication of the uplink resource allocation of the resource blocks for transmissions on the secondary cell group. The controller additionally determines a remaining power for the secondary cell group by reducing the signaled maximum dual carrier power by the total additional maximum power reduction and subtracting the configured primary cell group power. The controller additionally determines a secondary cell group additional maximum power reduction as a difference between the signaled maximum secondary cell group power and a remaining power of the secondary cell group. The controller additionally determines a configured maximum power for the secondary cell group based on the determined secondary cell group additional maximum power reduction.

These and other objects, features and advantages of the present application will become apparent from the following description of one or more preferred embodiments, which proceeds with reference to the accompanying drawings.

Drawings

FIG. 1 is a block diagram of an exemplary network environment in which the present invention is suitable for operation;

fig. 2 is a flow chart for determining a secondary cell group additional maximum power reduction and configured maximum power in a user equipment; and

fig. 3 is an exemplary block diagram of an apparatus according to a possible embodiment.

Detailed Description

While the present disclosure is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described a presently preferred embodiment with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific embodiment illustrated.

Embodiments provide a method and apparatus for determining a Secondary Cell Group (SCG) additional maximum power reduction (a-MPR) and configuring a maximum power (Pcmax), including SCG a-MPR and Pcmax for dual connectivity with dynamic power sharing and Master Cell Group (MCG) prioritization.

Fig. 1 is an exemplary block diagram of a system 100 according to a possible embodiment. System 100 may include a wireless communication device 110, such as a User Equipment (UE), a base station 120, such as an enhanced node b (enb) or next generation node b (gnb), and a network 130. The wireless communication device 110 may be a wireless terminal, a portable wireless communication device, a smart phone, a cellular phone, a clamshell phone, a personal digital assistant, a personal computer, a selective call receiver, a tablet computer, a laptop computer, or any other device capable of sending and receiving communication signals over a wireless network.

Network 130 may include any type of network capable of sending and receiving wireless communication signals. For example, network 130 may include a wireless communication network, a cellular telephone network, a Time Division Multiple Access (TDMA) -based network, a Code Division Multiple Access (CDMA) -based network, an Orthogonal Frequency Division Multiple Access (OFDMA) -based network, a Long Term Evolution (LTE) network, a fifth generation (5G) network, a third generation partnership project (3GPP) -based network, a satellite communication network, a high-altitude platform network, the internet, and/or other communication networks.

At least some existing systems allow the SCG to be discarded when it is not necessary. Furthermore, at least some existing systems may not be able to properly implement the radio layer 1(RAN1) protocol.

In accordance with at least some embodiments of the present disclosure, the a-MPR of the SCG may be more explicitly dependent on the configured transmission power of the MCG, rather than the maximum configured transmission power. Thus, SCGs may not be unnecessarily discarded and the RAN1 protocol in TS 38.213 may be better reflected.

Thus, the a-MPR and Pcmax of SCG may be better defined, such as in the case of evolved universal terrestrial radio access (E-UTRA) New Radio (NR) dual connectivity (EN-DC), so that dropping and scaling of SCG may be reduced.

In accordance with possible embodiments of the present disclosure, the present disclosure addresses how to allocate power between two carriers for dual carrier transmission when one carrier is prioritized over the other, e.g., when the first carrier is identified as a Master Cell Group (MCG) and the second carrier is identified as a Secondary Cell Group (SCG). In one embodiment, the MCG is an LTE carrier and the SCG is an NR carrier. In another embodiment, the MCG is an NR carrier and the SCG is an LTE carrier. In another embodiment, both the MCG and SCG are NR carriers.

From TS 38.213, we have the following:

if at slot i of SCG₂In any part ofUE reduction of slot i at SCG₂Such that in time slot i₂In any part ofWhereinAndin sub-frames i of MCG₁Time slot i of SCG at FR1₂A linear value of the total UE transmission power in (1). If for time slot i in SCG₂In any part ofNeed to be provided withDecrease of excessFrom X_SCALEThe provided value does not require the UE to be in the SCG slot i₂Is transmitted in any portion of (a). If in order to be in time slot i₂In all parts ofWithout the need to beDecrease over by X_SCALEThe value provided then requires the UE to be in slot i of SCG₂To transmit.

However, the text in the specification has several basic concerns. The first concern is thatIn the case of being scaled or dropped,the power actually transmitted without dropping or scaling is not the actual transmission power of the SCG. However, it is not clear that:

i) if there is no MCG at all present,whether the power to be transmitted is unknown, or

ii) if MCG is present but not prioritized,it is not clear whether the power is being transmitted.

In addition, due toThe configuration Pcmax must be less than SCG and the maximum configuration power (Pcmax) is a function of the additional maximum power reduction (a-MPR), so SCG a-MPR should be specified before determining whether SCG should be discarded. Since the RAN1 specification does not indicate which a-MPR should be applied (nor does it state anything about a-MPR), it is not clear that SCG should beWhat A-MPR to use.

The a-MPR to be applied to MCGs with MCG priority is clear and is specified in 38.101-3-i.e. in case SCG is not present, a-MPR applies to MCG. The A-MPR depends on MCG Resource Block (RB) allocation and is independent of SCG RB allocation. Thus, if the MCG is an LTE carrier, the a-MPR applied is the a-MPR specified in TS 36.101. In contrast, if the MCG is an NR carrier in frequency range 1(FR1), the a-MPR applied is the a-MPR specified in TS 38.101-1.

In contrast, for SCG, the a-MPR that should be applied is not explicitly specified. The present inventors have recognized that there are a number of possibilities as described below.

Option 1: an independent SCG a-MPR to be applied and which depends only on SCG RB allocation.

Option 2: applied to EN-DC a-MPR for SCGs with dynamic power sharing but no LTE priority. The A-MPR depends on both MCG and SCG Resource Block (RB) allocations. The A-MPR is defined for DC _ (n)41 in 38.101-3, but is not specifically defined for DC _ (n) 71. For DC _ (n)41, the definition of a-MPR per carrier is independent of the number of RBs per carrier, but does depend on the total number of RBs. For DC _ (n)71, the total a-MPR is defined as a function of the total allocation ratio, which is defined as the ratio of the sum of the total number of allocated RBs on the two carriers and the maximum total number of RBs for the configured carrier. This can be converted to a-MPR per carrier by using the ratio of the number of allocated RBs per carrier to the total number of allocated RBs, but this is not currently done in the 38.101-3 specification.

Option 3: EN-DC a-MPR should be applied to the SCG to better ensure that the emission requirements are met even if the MCG is transmitting at a configured maximum power consistent with the a-MPR in the MCG independent specification. According to the A-MPR definition, it should not be necessary to scale SCG, sinceThe emission requirements should be met. However, according to this definition, the Pcmax of an SCG is typically 0 in terms of linearity — that is, no power can be transmitted on the SCG. According to this definition, DC _ n (71) can indicate that, as long as there is a MCGThe SCG may be discarded upon transmission.

Option 4: EN-DC A-MPR should be applied to SCG to ensure emission requirements are met, while taking into accountAnd the Pcmax of MCG is compared with the actual value ofThe difference between these is interpreted as the a-MPR that has been applied to the MCG. Using this approach, it should never be necessary to scale the SCG, asShould be sufficient to meet the emission requirements. Using this method, the UE calculates the remaining power of the SCG as the difference of the maximum power that can be transmitted on both carriers using the dual carrier a-MPR and the power transmitted on the MCG. Then, the a-MPR of the SCG is defined as the difference between the signaled maximum secondary cell group power and the remaining power.

With regard to the above possibilities, the following points should be noted:

i) option 1 allows scaling and dropping four options more frequently. Option 2 allows the second most frequent of the four options to be scaled and discarded.

ii) options 3 and 4 do not allow scaling, but allow dropping if Pcmax of SCG is 0 in the linear scale, so that there is no power left.

iii) among all options, option 4 allows SCGs to be transmitted more frequently and at higher power.

Several additional issues that need to be considered are as follows. In the past, the Pcmax of an SCG was generally not dependent on the actual configured power of the MCGHowever, since the existing specification requires that the SCG know the RB allocation of the MCG in order for the SCG to calculate the a-MPR, it is desirable that the SCG also know the actual configured power of the MCG so that it can be used also when calculating the a-MPR of the SCG, which is not unreasonable.

This may indicate that the base station (eNB or gNB) for SCG may not be able to predict the a-MPR used by the UE. However, this is an already existing concern, since the existing a-MPR already depends on the RB allocation of the MCG, and this may not be known to the base station for the SCG. Therefore, the base station scheduler of the SCG should already be able to cope with the case where the a-MPR of the SCG cannot be predicted. Furthermore, this usually only needs to be of interest if the transmission power of the SCG collides with the configured maximum power Pcmax. This is not believed to be a problem at lower power levels.

It can be observed from the TS 38.213 text that there is concern over excessive scaling of SCG transmissions. At least one reason to limit in-band EN-DC scaling is due to concerns over in-phase and quadrature (IQ) images, which may reduce the sensitivity of the weaker carrier. For example, if the UE transmitter IQ image specification is 28dB, and the power spectral density imbalance is 10dB, the peak signal-to-noise ratio (SNR) for the weaker carrier is 18dB (28-10). Another possible concern may relate to the ability of the UE to accurately set the power level. For options 3 and 4, there is no explicit scaling. One possible way to address this concern is to transmit the SCG only when the power spectral density imbalance between the MCG and SCG is within a predefined limit of X dB, where the limit may be fixed or semi-statically signaled. When the Power Spectral Density (PSD) imbalance between the two carriers will be greater than X dB, the UE will be allowed to drop SCG. Alternatively, because the purpose of prioritizing the MCGs may be to protect MCG transmissions in at least some cases, SCG transmissions may be dropped or scaled only when their power spectral density is X dB greater than the spectral density of MCG transmissions. Further, the threshold X may be set in the specification or semi-statically signaled.

Thus, the existing RAN1 specifications may not be as clear when scaling and dropping is allowed, which may depend on how the a-MPR is calculated for the SCG. Four options for calculating the a-MPR have been discussed above. Of these options, option 4 is believed to better maximize the power available for SCG transmission. Option 4 may be combined with a restriction on PSD imbalance to address power scaling concerns.

According to some embodiments, the varying may include

1) The Pcmax equations for in-band (and possibly inter-band) EN-DC in 38.101-3 are modified to reflect option 4

2) A limit is added to the PSD imbalance between carriers only for the in-band EN-DC that may be signaled.

Some examples of how the A-MPR of the SCG may be modified at 38.101-3 for the case of dynamic power sharing are shown below.

Example 1:

6.2 B.3.1.1A-MPR for DC _ (n)71AA

For a UE supporting dynamic power sharing, the following is shown:

-a-MPR according to 3GPP TS 36.101 for MCG_c: "evolved universal terrestrial radio access (E-UTRA); user Equipment (UE) radio transmission and reception "

-for the SCG,

if P is_MCG＜P_{PowerClass，EN-DC}-A-MPR_DC，

Then

A-MPR′_c＝P_{PowerClass，NR}-10*log₁₀(10^((P_{PowerClass，EN-DC}-A-MPR_DC)/10)-10^(P_MCG/10))

Otherwise

A-MPR′_cInfinity, and SCG may be discarded

Wherein P is_MCGIs the configured output power of the MCG.

Furthermore, SCG transmissions may be dropped if the MCG and SCG are configured with powers such that the power spectral density of the SCG is greater than the PSD of the MCG by more than X dB. Alternatively, if the power spectral density of the SCG is greater than the power spectral density of the MCG by more than X dB, the power of the SCG may be reduced until the power spectral density of the SCG is greater than the power spectral density of the MCG by X dB.

Example 2:

6.2 B.3.1.2A-MPR for NS _04

6.2B.3.1.2.0 overview

When the UE is configured for continuous EN-DC in-band with B41/n41 and receives IE NS _04, the UE determines the total allowed maximum output power reduction as specified in this section. The a-MPR of EN-DC defined in this section is used instead of MPR defined in 6.2b.2.2, rather than additionally, so when NS _04 is signaled, EN-DC MPR is 0.

For a UE supporting dynamic power sharing, the following is shown:

-a-MPR according to 3GPP TS 36.101 for MCG_c: "evolved universal terrestrial radio access (E-UTRA); user Equipment (UE) radio transmission and reception "

-for the SCG,

if P is_MCG＜P_{PowerClass，EN-CC}-A-MPR_tot，

Then

A-MPR′_c＝P_{PowerClass，NR}-10*log₁₀(10^(P_{PowerClass，EN-DC}-A-MPR_tot)/10)-10^(P_MCG/10))

Otherwise

A-MPR′_cInfinity, and SCG may be discarded

Wherein, P_MCGIs the configured output power of the MCG, and

A-MPR_tot＝P_{PowerClass，EN-DC}-min(P_{PowerClass，EN-DC}，10*log₁₀(10^((P_{PowerClass，E-UTRA}-A-MPR_E-UTRA)/10)+10^((P_{PowerClass，NR}-A-MPR_NR)/10))

wherein the content of the first and second substances,

A-MPR_E-UTRA＝MAX(A-MPR_{single，E-UTRA}+MPR_{single，E-UTRA}，A-MPR_IM3)

wherein

-A-MPR_{single，E-UTRA}Is the A-MPR defined for E-UTRA transmissions in 3GPP TS 36.101: "evolved universal terrestrial radio access (E-UTRA); user Equipment (UE) radio transmission and reception "

-A-MPR_single，NRIs the a-MPR defined for NR transmission in 3GPP TS 38.101-1: "NR; user Equipment (UE) radio transmission and reception; part 1: range 1 independently "

-MPR_{single，E-UTRA}Is the MPR defined for E-UTRA transmissions in 3GPP TS 36.101: "evolved universal terrestrial radio access (E-UTRA); user Equipment (UE) radio transmission and reception "

Furthermore, SCG transmissions may be dropped if the MCG and SCG are configured with powers such that the power spectral density of the SCG is greater than the PSD of the MCG by more than X dB. Alternatively, if the power spectral density of the SCG is greater than the power spectral density of the MCG by more than X dB, the power of the SCG may be reduced until the power spectral density of the SCG is greater than the power spectral density of the MCG by X dB.

Example 3:

6.2 B.3.2.1A-MPR for NS _04

When the UE is configured for B41/n41 in-band discontinuous EN-DC and receives IE NS _04, the UE determines the total allowed maximum output power reduction as specified in this section. The a-MPR of EN-DC defined in this section is used instead of MPR defined in 6.2b.2.2, rather than additionally, so when NS _04 is signaled, EN-DC MPR is 0.

For a UE supporting dynamic power sharing, the following is shown:

-a-MPR according to 3GPP TS 36.101 for MCG_c: "evolved universal terrestrial radio access (E-UTRA); user Equipment (UE) radio transmission and reception "

-for the SCG,

if P is_MCG＜P_{PowerClass，EN-DC}-A-MPR_tot，

Then

A-MPR′_c＝P_{PowerClass，NR}-10*log₁₀(10^((P_{PowerClass，EN-DC}-A-MPR_tot)/10)-10^(P_MCG/10))

Otherwise

A-MPR′_cInfinity, and SCG may be discarded

Wherein, P_MCGIs the configured output power of the MCG, and

-for the total configured transmission power,

A-MPR_iot＝P_{PowerClass，EN-DC}-min(P_{PowerClass，EN-DC}，10*log₁₀(10^((P_{PowerClass，E-UTRA}-A-MPR_E-UTRA)/10)+10^((P_{PowerClass，NR}-A-MPR_NR)/10))

wherein

A-MPR_E-UTRA＝MAX(A-MPR_{single，E-UTRA}+MPR_{single，E-UTRA}，A-MPR_EN-DC)

A-MPR_EN-DC＝MAX(A-MPR_IM3，A-MPR_ACLRoverlap)

Wherein

-A-MPR_{single，E-UTRA}Is the A-MPR defined for E-UTRA transmissions in 3GPP TS 36.101: "evolved universal terrestrial radio access (E-UTRA); user Equipment (UE) radio transmission and reception "

-A-MPR_single，NRIs the a-MPR defined for NR transmission in 3GPP TS 38.101-1: "NR; user Equipment (UE) radio transmission and reception; part 1: range 1 independently "

-MPR_{single，E-UTRA}Is the MPR defined for E-UTRA transmissions in 3GPP TS 36.101: "evolved universal terrestrial radio access (E-UTRA); user Equipment (UE) radio transmission and reception "

Fig. 2 shows a flow chart 200 of a method in a user equipment for determining a secondary cell group additional maximum power reduction and configuring a maximum power. More specifically, the method includes receiving 202 an indication of an uplink resource allocation of resource blocks for transmission on a master cell group. An indication of an uplink resource allocation of resource blocks for transmission on a secondary cell group is received 204. The total additional maximum power reduction is determined 206 based on the indication of the uplink resource allocation of resource blocks for transmissions on the primary cell group and the indication of the uplink resource allocation of resource blocks for transmissions on the secondary cell group. The remaining power for the secondary cell group is determined 208 by reducing the signaled maximum dual carrier power by the total additional maximum power reduction and subtracting the configured master cell group power. The secondary cell group additional maximum power reduction is determined 210 as the difference between the signaled maximum secondary cell group power and the remaining power of the secondary cell group. Determining 212 a configured maximum power for the secondary cell group based on the determined secondary cell group additional maximum power reduction.

In some cases, the secondary cell group transmission may be discarded if the determined remaining power for the secondary cell group is negative.

In some cases, the additional maximum power reduction for the secondary cell group may be defined as infinity if the determined remaining power for the secondary cell group is negative.

In some cases, the configured power of the secondary cell group may be determined using the configured maximum power of the secondary cell group. In some of these cases, the power spectral density of the secondary cell group is calculated as a ratio of the configured power of the secondary cell group to the number of allocated resource blocks for transmission on the secondary cell group. Further, a ratio of the power spectral density of the secondary cell group to the power spectral density of the primary cell group may be compared to a threshold, and if an absolute value of the ratio exceeds the threshold, the transmission on the secondary cell group may be dropped. Further, a ratio of the power spectral density of the secondary cell group to the power spectral density of the master cell group may be compared to a threshold, and transmissions on the secondary cell group may be scaled until an absolute value of the ratio of the power spectral density of the secondary cell group to the power spectral density of the master cell group equals the threshold. Further, a threshold value for a maximum ratio of the power spectral density of the secondary cell group to the power spectral density of the primary cell group may be signaled to the user equipment.

In some cases, transmissions on the master cell group and transmissions on the secondary cell group may be in-band.

It should be understood that although specific steps are shown, various additional or different steps may be performed according to embodiments, and one or more specific steps may be rearranged, repeated, or eliminated entirely according to embodiments. Further, some steps performed may be repeated simultaneously on a continuous or continuous basis while other steps are performed. Further, different steps may be performed by different elements or within a single element of the disclosed embodiments.

Fig. 3 is an exemplary block diagram of an apparatus 300, such as the wireless communication device 110, according to a possible embodiment. The apparatus 300 may include a housing 310, a controller 320 within the housing 310, audio input and output circuitry 330 coupled to the controller 320, a display 340 coupled to the controller 320, a transceiver 350 coupled to the controller 320, an antenna 355 coupled to the transceiver 350, a user interface 360 coupled to the controller 320, a memory 370 coupled to the controller 320, and a network interface 380 coupled to the controller 320. The apparatus 300 may perform the methods described in all embodiments

Display 340 may be a viewfinder, a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, a plasma display, a projection display, a touch screen, or any other device that displays information. The transceiver 350 may include a transmitter and/or a receiver. The audio input and output circuitry 330 may include a microphone, a speaker, a transducer, or any other audio input and output circuitry. The user interface 360 may include a keypad, keyboard, buttons, touch pad, joystick, touch screen display, another additional display, or any other device for providing an interface between a user and an electronic device. Network interface 380 may be a Universal Serial Bus (USB) port, an ethernet port, an infrared transmitter/receiver, an IEEE 1394 port, a WLAN transceiver, or any other interface that can connect an apparatus to a network, device, or computer and that can transmit and receive data communication signals. The memory 370 may include random access memory, read only memory, optical memory, solid state memory, flash memory, removable memory, a hard drive, cache, or any other memory that may be coupled to the apparatus.

The apparatus 300 or controller 320 may implement any operating system, such as Microsoft WindowsOrAndroid^TMOr any other operating system. For example, the device operating software may be written in any programming language, such as C, C + +, Java, or Visual Basic. The device software can also be appliedOperating on a frame, e.g.A frame,A framework or any other application framework. The software and/or operating system may be stored in memory 370 or elsewhere on device 300. The apparatus 300 or the controller 320 may also use hardware to implement the disclosed operations. For example, the controller 320 may be any programmable processor. The disclosed embodiments may also be implemented on: general purpose or special purpose computers, programmed microprocessors or microprocessors, peripheral integrated circuit elements, application specific integrated circuits or other integrated circuits, hardware/electronic logic circuits (such as discrete element circuits), programmable logic devices (such as programmable logic arrays), field programmable gate arrays, or the like. In general, the controller 320 may be any controller or processor device capable of operating an apparatus and implementing the disclosed embodiments. Some or all of the additional elements in the apparatus 300 may also perform some or all of the operations of the disclosed embodiments.

The method of the present disclosure may be implemented on a programmed processor. However, the controllers, flow diagrams, and modules may also be implemented on: general purpose or special purpose computers, programmed microprocessors or microcontrollers and peripheral integrated circuit elements, integrated circuits, hardware electronic or logic circuits (such as discrete element circuits), programmable logic devices, or the like. In general, any device on which resides a finite state machine capable of implementing the flowcharts set forth in the figures may be used to implement the processor functions of this disclosure.

While the present disclosure has been described with specific embodiments, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. For example, various components of the embodiments may be interchanged, added, or substituted in the other embodiments. Moreover, not all of the elements of each figure may be necessary for the operation of the disclosed embodiments. For example, those skilled in the art of the disclosed embodiments will be able to make and use the teachings of the present disclosure by employing only the elements of the independent claims. Accordingly, the embodiments of the present disclosure as set forth herein are intended to be illustrative, not limiting. Various changes may be made without departing from the spirit and scope of the disclosure.

In this document, relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The phrase "at least one of", "selected from at least one of the group" or "selected from at least one of" following a list is defined to mean one, some or all but not necessarily all of the elements in the list. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "a" or "an" or the like does not, without further constraints, preclude the presence of additional identical elements in the process, method, article, or apparatus that comprises said element. Also, the term another is defined as at least a second or more. The terms "comprising," having, "and the like, as used herein, are defined as" comprising. Further, the background section is written as an understanding of the inventors 'context at the time of filing and includes any issues with the prior art by the inventors themselves and/or issues experienced in the inventors' own work.