Method and apparatus for dynamic power sharing and managing maximum power of secondary carriers

Abstract

A method for managing the use of dynamic power sharing for dual carrier operation is provided. A power headroom report is received (902) from a primary cell group. An allowed tolerance is identified (904) from the received power headroom report, which includes a maximum expected possible deviation between a power level to which a user equipment requests that a communication be set and an actual power level at which the corresponding communication is sent. While taking into account the identified allowed tolerance, a lower limit on the maximum configured power of the secondary cell group is determined (906), which enables the user equipment to meet the transmission requirements during dual carrier operation, as well as the total power constraint. The lower limit on the maximum configured power of the carriers of the secondary cell group is set (908) at the determined level.

Description

Technical Field

[0001] The present disclosure relates to dynamic power sharing and managing the maximum power of secondary carriers, including dynamic power sharing for dual carrier operation that determines a lower limit level of the maximum configured power of a secondary cell group. Background Art

[0002] Currently, user equipment such as wireless communication devices communicate with other communication devices using wireless signals, for example, in 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 of which defines various aspects of any communication connection made when a corresponding standard is used in 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).

[0003] To support greater data throughput, service providers are increasingly looking at techniques to expand the available bandwidth that specific users within the system are allowed to use. At least some bandwidth extension techniques include the use of carrier aggregation, dual carriers, and / or dual connectivity, in which multiple frequency bands from one or more networks are selected to operate together. For example, by utilizing more than one carrier via carrier aggregation, the total transmission bandwidth associated with a particular data channel can be increased and the data capacity of the channel enhanced accordingly. Additionally and / or alternatively, a dual carrier or multi-carrier approach can allow two or more spectrum allocations to be paired and / or used in parallel, including alternatively spectrum allocations associated with different standards and / or radio access technologies, which can also be used to support enhanced and / or more powerful data throughput capabilities.

[0004] This possibility may better support the beginning stages of network construction, which involve the initial adoption of a particular standard, where the regional coverage of the emerging standard may be incomplete at least initially. During such a transition period, it may be beneficial to better support the transition to the emerging standard by allowing the bearers of the new standard to be supported in conjunction with the infrastructure of more mature or previously established standards, and / or to supplement the coverage of the emerging standard with coexisting communications using the more mature standard.

[0005] In at least some cases, the network infrastructure supporting each standard may be referred to alternatively as a cell group. In some of these cases, one cell group may take precedence over another cell group. In this case, the priority cell group may be referred to as a primary cell group and the non-priority cell group may be referred to as a secondary cell group.

[0006] In situations where multiple connections exist, where, in some cases, individual connections may involve connections to different network infrastructures, managing the overall operation of the communication connections in a particular user device relative to the potentially multiple networks may present challenges as certain decisions may need to be made in an environment where each participant may not have complete information.

[0007] The inventors have recognised that existing specifications may be overly conservative with respect to when to allow user equipment not to transmit or to scale power used in association with a secondary cell group, wherein it is reasonable for the secondary cell group to know the expected configured power of the primary cell group, and this may take into account the allowed tolerance identified relative to a particular communication with the primary cell group, which in turn may be used as part of the decision making process as to whether to require the user equipment to transmit or not transmit in the secondary cell group and the corresponding power level. Summary of the invention

[0008] The present application provides a method for managing the use of dynamic power sharing for dual carrier operation in a user equipment, the dual carrier operation including corresponding communications via a primary cell group and a secondary cell group. A power headroom report is received from the primary cell group. An allowed tolerance is identified from the received power headroom report, which includes the maximum expected possible deviation between the power level to which the user equipment requests that the communication via the primary cell group be set and the actual power level at which the corresponding communication via the primary cell group is sent. While taking into account the allowed tolerance identified relative to any communication via the primary cell group, a level of a lower limit of the maximum configured power of the secondary cell group is determined, which enables the user equipment to meet the transmission requirements for communicating via each of the primary cell group and the secondary cell group during the dual carrier operation, as well as the total power constraints of any overall communication of the user equipment. The lower limit of the maximum configured power of the carrier of the secondary cell group is set at the determined level.

[0009] According to another possible embodiment, a user equipment for managing the use of dynamic power sharing for dual carrier operation is provided, the dual carrier operation including corresponding communications via a primary cell group and a secondary cell group. The user equipment includes a transceiver that receives a power headroom report from the primary cell group. The user equipment also includes a controller coupled to the transceiver, the controller identifying an allowable tolerance from the received power headroom report, which includes the maximum expected possible deviation between the power level to which the user equipment requests to set the communication via the primary cell group and the actual power level of the corresponding communication sent via the primary cell group. The controller further determines the level of the lower limit of the maximum configured power of the secondary cell group while taking into account the allowable tolerance identified relative to any communication via the primary cell group, which enables the user equipment to meet the transmission requirements for communicating via each of the primary cell group and the secondary cell group during the dual carrier operation, as well as the total power constraints of any overall communication of the user equipment. The controller further sets the lower limit of the maximum configured power of the carrier of the secondary cell group at the determined level.

[0010] These and other objects, features and advantages of the present application will become apparent from the following description of one or more preferred embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a block diagram of an exemplary network environment in which the present invention is suitable for operation;

[0012] Figure 2 is a table providing a summary of allowed scaling / dropping behavior for E-UTRA-NR dual carrier with dynamic power sharing;

[0013] Figure 3 is a graph illustrating allowed scaling and dropping behavior of a general inter-band E-UTRA-NR dual carrier;

[0014] Figure 4 is a graph illustrating the behavior allowed in technical specification 38.101-3 relative to the dynamic power sharing behavior in technical specification 38.213 when the maximum power reduction for LTE and NR carriers is equal to 2 dB;

[0015] Figure 5 is a graph illustrating the behavior allowed in Technical Specification 38.101-3 relative to the dynamic power sharing behavior for full resource block allocations in Technical Specification 38.213;

[0016] Figure 6 is a graph illustrating an in-band lower limit of a configured maximum output power of an NR carrier as a function of configured LTE power;

[0017] Figure 7 is a graph illustrating an inter-band lower limit of a configured maximum output power of an NR carrier as a function of a configured LTE power when the maximum power of the NR carrier is reduced by 2 dB;

[0018] Figure 8 is a flow chart in a user equipment managing the use of dynamic power sharing for dual carrier operation, including a determined level of a lower limit of a maximum configured power of a secondary cell group that takes into account an allowed tolerance identified in primary cell group transmissions;

[0019] Fig. 9 is a flow chart in a user equipment managing the use of dynamic power sharing for dual carrier operation, including a determined level of a lower limit of a maximum configured power of a secondary cell group taking into account an identified allowed tolerance from a power headroom report; and

[0020] Fig.10 is an example block diagram of an apparatus according to a possible embodiment. DETAILED DESCRIPTION

[0021] While the present disclosure may take various forms of embodiment, there is shown in the drawings and will be described below a presently preferred embodiment, but it should be understood that the disclosure is to be considered as an example of the invention and is not intended to limit the invention to the specific embodiments shown.

[0022] Embodiments provide for managing the use of dynamic power sharing associated with dual carrier operations.

[0023] Figure 1 is an example block diagram of a system 100 according to a possible embodiment. The 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 a 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 flip 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 on a wireless network.

[0024] The network 130 may include any type of network capable of sending and receiving wireless communication signals. For example, the 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.

[0025] As previously mentioned, the Technical Specification (TS) 38.101-3 for 3rd Generation Partnership Project Radio Access Networks (titled “NR; User Equipment (UE) radio transmission and reception; Part 3: Range 1 and Range 2 Interworking operation with other radios”) does not require a dynamic power sharing UE to implement dynamic power sharing in the sense defined in the Technical Specification (TS) 38.213 for 3rd Generation Partnership Project Radio Access Networks (titled “NR; Physical layer procedures for control”). In particular, the UE is always allowed to assume that the primary cell group (MCG) for Long Term Evolution (LTE) is at its individual maximum power P when determining whether the secondary cell group (SCG) should be scaled or dropped regardless of the actual power transmitted on the MCG. CMAX,E-UTRA As a result of this definition, a dynamic power sharing UE is not required to implement dynamic power sharing in the sense that it is not required that power not used by the MCG be made available to the SCG.

[0026] The scaling and dropping conditions in TS 38.101-3 depend on conditions "a" and "b", which are defined as follows:

[0027] a=10log 10 [p CMAX_E-UTRA,c (p)+p CMAX,f,c,NR (q)]>P EN-DC,tot_L ;as well as

[0028] b=10log 10 [p CMAX_E-UTRA,c (p)+p CMAX,f,c,NR (q) / X_scale]>P EN-DC,tot_L

[0029] If "b" is true (TRUE), the UE is allowed to drop the NR carrier. If "a" is true and "b" is false (FALSE), the UE is allowed to CMAX,f,c,NR Scale X_scale. As mentioned previously, the current requirements in TS 38.101-3 have several negative impacts, including the following:

[0030] i) For multiple actual deployment scenarios, condition "b" is always TRUE, and the dynamic power sharing UE is allowed to drop the SCG carrier as long as there is MCG transmission.

[0031] ii) For deployment scenarios where condition "a" is true and condition "b" is false, the UE is allowed to scale the SCG even if scaling is not required to meet transmit or total power constraints.

[0032] iii) There is no requirement to make power not used by the MCG available to the SCG. Thus, the specification allows for dynamic power sharing but does not require it.

[0033] Basically, in order to require the UE to implement dynamic power sharing in the sense described in TS 38.213, the SCG’s P CMAX_L Must be actual MCG power Due to the absolute power tolerance, the UE cannot accurately know Concerns have therefore been raised about the feasibility and testability of such a requirement. In this paper, we address these concerns and consider an alternative proposal for defining a dynamic power sharing requirement that allows the UE to make available power not used by the LTE carrier to the NR carrier.

[0034] Undesirable behavior allowed by SCG scaling / dropping conditions in TS 38.101-3

[0035] The scaling and dropping rules in TS 38.101-3 have been studied for various intra-band and inter-band EN-DC scenarios. Figure 2 More specifically, Figure 2 A table 200 is illustrated which provides an overview of the allowed scaling / dropping behavior for E-UTRA-NR dual carrier with dynamic power sharing.

[0036] from Figure 2 As can be seen in the table shown, we have the following four observations:

[0037] Observation 1: For DC_(n)71AA, when there is MCG transmission, the UE is always allowed to drop SCG transmission, regardless of RB allocation, modulation, value of X_scale and actual transmit power on MCG. No matter what, it's always like this.

[0038] Observation 2: For the general in-band non-contiguous EN-DC scenario in Table 1, when there is MCG transmission, the UE is always allowed to drop the SCG transmission, regardless of the RB allocation, modulation, value of X_scale and actual transmit power on the MCG. No matter what, it's always like this.

[0039] Observation 3: For the general in-band continuous EN-DC scenario in Table 1, if the modulation of the MCG is 64-QAM or less, the UE is always allowed to drop the SCG transmission when there is an MCG transmission, regardless of the RB allocation, the value of X_scale, and the actual transmit power on the MCG. No matter what, it's always like this.

[0040] Observation 4: For the general inter-band EN-DC scenario in Table 1, if the modulation order of both MCG and SCG is 64-QAM or less, then the UE is always allowed to scale the SCG transmission when there is MCG transmission, regardless of the RB allocation, the value of X_scale, and the actual transmit power on the MCG. No matter what, it's always like this.

[0041] We now consider some more detailed examples that illustrate the differences between the RAN1 requirements in TS 38.213 and the allowed behavior in TS 38.101-3.

[0042] Example 1: Generic Inter-Band EN-DC without Network Signaling (NS)

[0043] We from Figure 2 Consider the general inter-band case without NS signaling, where P LTE =P NR =P ENDC =23dBm. Depending on the maximum power reduction (MPR) taken for each carrier, any of the following conditions are possible.

[0044] a=FALSE does not allow scaling or discarding of SCG

[0045] a=TRUE,b=FALSE Allow SCG scaling

[0046] a=TRUE,b=TRUE Always allow SCG to discard

[0047] Different areas in Figure 3 More specifically, Figure 3 is a graph 300 illustrating the allowed scaling and dropping behavior for a general inter-band E-UTRA-NR dual carrier. It should be noted that these regions depend on the MPR (which depends on the modulation type and the allocation size and location), but are not related to the actual transmit power and No relation. Figure 3 It can be observed that if the modulation order on both carriers is less than or equal to 64-QAM (quadrature amplitude modulation) (for which MPR = 3dB), the UE is always allowed to scale or drop the NR carrier, even if scaling is not required to meet the transmit or total power constraints. The UE only needs to send the NR carrier without scaling in the area above the blue line, and in this area, either the LTE carrier or the NR carrier must send 256-QAM so that the allowed MPR on at least one of the two carriers is greater than 3dB.

[0048] We now consider the allowed behavior of the UE in the case where the MPR on both the LTE and NR carriers is equal to 2dB. For this case, the MPR of the LTE and NR carriers is cmax,L The sum is given by

[0049] 10log 10 (10 (23-2) / 10 +10 (23-2) / 10 )=24dBm

[0050] makes condition "a" true. If we assume that X_scale is 6dB, then we have

[0051] 10log 10 (10 (23-2) / 10 +10 (23-2-6) / 10 )=22dBm, making condition "b" FALSE. Therefore, the UE needs to send the NR carrier, but is allowed to increase the P of the NR carrier. CMAX_L Set equal to 15dBm, no matter how small the transmitted power on the LTE carrier is. For example, if the LTE carrier only transmits 13dBm, the NR carrier only needs to transmit a maximum of 15dBm, even though it could transmit up to 21dBm and still meet the transmit and total power constraints.

[0052] exist Figure 4 This problem is illustrated in Figure 2, where it can be seen that the P CMAX_L Than P for dynamic power sharing described in TS 38.213 CMAX_L 6dB smaller. More specifically, Figure 4 is a graph illustrating the behavior allowed in technical specification 38.101-3 relative to the dynamic power sharing behavior in technical specification 38.213 when the maximum power reduction for both LTE and NR carriers is equal to 2dB. It should be clear from this example that even if the UE must transmit the NR carrier when a=TRUE and b=FALSE, dynamic power sharing is not required because the UE never needs to transmit more than 15dBm on the NR carrier. Therefore, indicating support for dynamic power sharing UEs can meet the requirements in TS 38.101-3 without requiring the UE to share the unused power of the LTE carrier with the NR carrier.

[0053] Example 2: DC_(n)71AA

[0054] We next consider Figure 2 For P LTE =P NR =P ENDC =23dBm scenario DC_(n)71AA example. Figure 2As shown in Table 200 of FIG. 200 , for this example, the UE is always allowed to drop the NR carrier as long as there is transmission on the LTE carrier. CMAX_L In linear terms, it is basically 0, such as Figure 5 As shown, no matter how little power Sent on the MCG. More specifically, Figure 5 is a graph 500 illustrating the behavior allowed in technical specification 38.101-3 relative to the dynamic power sharing behavior in technical specification 38.213 for full resource block allocation.

[0055] Although TS 38.101-3 always allows the UE to drop NR carriers, it is still possible to transmit a large amount of power on the NR carriers while still meeting the transmit and total power constraints. Figure 5 In the example, for CP-OFDM, the power that can be transmitted is shown as a function of the complete allocation For this full allocation, the total additional maximum power reduction (A-MPR) is 6.5 dB. The second curve corresponds to the previously proposed P cmax,L , and is consistent with the dynamic power sharing requirements in TS 38.213.

[0056] Verification of Dynamic Power Sharing

[0057] Several previous contributions have shown that it is possible to modify the parameter P LTE , P NR and P ENDC To solve Figure 2 Identified in Table 200 and in Figure 3-5 The problem illustrated in the graph of , allows to avoid dropping by ensuring condition "b" is FALSE, and avoid scaling by ensuring condition "a" is FALSE. However, this approach does not solve the problem, because if condition "a" is FALSE, dynamic power sharing is not needed at all (and therefore not tested), and if condition "b" is FALSE, the UE may still increase the P of the NR carrier. cmax Scaling X_scale, even if scaling is not needed, as shown in Example 1 above. Fundamentally, dynamic power sharing cannot be tested when the LTE carrier is at maximum power, because dynamic power sharing requires the UE to share power with the NR carrier that is not needed by the LTE carrier.

[0058] As mentioned previously, dynamic power sharing can consider two types of test requirements:

[0059] i) Qualitative requirement, where the measured NR transmit power must increase as the measured LTE power decreases. For this requirement, the UE receives power "up" commands for both the LTE and NR carriers until the output power reaches a steady state. The power of the LTE and NR carriers is measured. The UE is then given several "down" power control commands for LTE, after which it is given consecutive "up" power control commands for NR. After the NR power reaches a steady state, the measured NR power is recorded. Since each set of "down" power control commands on the LTE carrier followed by an "up" power command for the NR carrier reduces the LTE power, the measured NR power must increase to meet the qualitative requirement.

[0060] ii) Quantitative requirements, where the measured NR power is compared with the modified P CMAX,L For this requirement, the LTE carrier The measurement of the NR carrier determines the P CMAX,L Provide continuous "upward" power control commands to the UE for the NR carrier until the NR output power reaches a steady state. To meet the quantitative requirement, the measured NR power must be greater than the modified P CMAX,L .

[0061] It is possible to CMAX,L Qualitative testing is used when no changes are made to the definition, as it only checks the desired general behavior, i.e., as the LTE carrier transmits less power, the NR carrier can use more power. In contrast, quantitative testing requires the P CMAX,L value, which is a function of LTE power, so for test requirements we make the following recommendations.

[0062] In-band EN-DC

[0063] For in-band EN-DC when condition "a" is TRUE, let Indicates the configured power of the LTE carrier in dB.

[0064]

[0065] Then the NR carrier may be dropped. Otherwise, define

[0066]

[0067] in, is the E-UTRA power upper limit of the configured power in TS 36.101, Less than or equal to P cmax_E-UTRA , we only consider the case where condition "a" is TRUE, because otherwise no change is needed. In addition, using PEN-DC,tot_L Because It is a variable inside the UE. Since the UE knows its configured LTE power It also knows its allowable tolerance and can set P CMAX_L,NR_DPS When testing dynamic power sharing, the test equipment is configured for the LTE carrier. Then power “up” commands are given to the NR carrier until a steady state is reached. Since both the UE and the test equipment know the configured power Therefore, both of them also know the upper tolerance Then the maximum NR power is required to exceed the lower value

[0068] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0069] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin in TS 38.101-1.

[0070] According to at least one embodiment, for in-band EN-DC when condition "a" is TRUE, let The configured power of the LTE carrier is expressed in dB.

[0071]

[0072] Then the NR carrier may be dropped. Otherwise, define

[0073]

[0074] in, This is the upper limit of the E-UTRA power configured in TS 36.101. The maximum NR power needs to exceed the lower value.

[0075] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0076] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin from TS 38.101-1.

[0077] Figure 6 6 is a graph 600 illustrating an in-band lower limit of a configured maximum output power of an NR carrier as a function of configured LTE power.

[0078] EN-DC

[0079] The situation is slightly different because for inter-band EN-DC, P is not defined. EN-DC,tot_L ,and The definition of does not include the MPR / A-MPR required to meet the emission constraints on the NR carrier. Therefore, for inter-band EN-DC, we make the following recommendations.

[0080] For the inter-band EN-DC when condition "a" is TRUE, let Indicates the configured power of the LTE carrier in dB.

[0081]

[0082] Then the NR carrier may be dropped. Otherwise, define

[0083]

[0084] Among them, P CMAX_L,NR is from 6.2B.4.1.3 of TS 38.101-3, is the E-UTRA power upper limit of the configured power from TS 36.101, Less than or equal to P cmax_E-UTRA , and we only consider the case where condition “a” is TRUE, since no changes are required otherwise. As in the in-band case, since the UE knows its configured LTE power Therefore, it also knows its allowable tolerance and can set P CMAX_L,NR_DPS When testing dynamic power sharing, the test equipment is configured for the LTE carrier. Then a power “up” command is given to the NR carrier until the NR power reaches a steady state. Since both the UE and the test equipment know the configured power Therefore, both of them also know the upper tolerance Then the maximum NR power is required to exceed the lower value

[0085] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0086] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin from TS 38.101-1.

[0087] P CMAX_L,NR_DPS The requirements, such as Figure 7 As shown, where the MPR for the NR carrier is 2dB, so that P CMAX_L,NR =21dB. Figure 7Shown are the existing requirements from TS 38.101-3 and the requirements from TS 38.213 (both from Figure 4 It is worth noting that since the tolerance is included in this embodiment, when the MCG power is higher than 17dBm, P CMAX_L,NR_DPS In practice, it may fall below the existing TS 38.101-3 requirements. If the tolerance is not considered in this area, the UE may use the maximum value and P required by TS 38.101-3. CMAX_L,NR_DPS .

[0088] Figure 7 7 is a graph 700 illustrating an inter-band lower limit of a configured maximum output power of an NR carrier as a function of configured LTE power when the maximum power of the NR carrier is reduced by 2 dB.

[0089] According to at least one other embodiment, for the inter-band EN-DC when condition "a" is true, let Indicates the configured power of the LTE carrier in dB.

[0090]

[0091] Then the NR carrier may be dropped. Otherwise, define

[0092]

[0093] Among them, P CMAX_L,NR From 6.2B.4.1.3 of TS 38.101-3, is the E-UTRA power upper limit of the configured power from TS36.101. The maximum NR power needs to exceed the lower value

[0094] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0095] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin from TS 38.101-1.

[0096] Dynamic power sharing needs to be validated to ensure that the UE behaves as expected by TS 38.213 and such that the above-mentioned undesirable behavior does not occur. From the operator's perspective, the UE's behavior must be predictable and currently there is too much uncertainty in the UE's implementation. For this reason, some proposals have been made to define a requirement that the UE is not allowed to drop or scale an NR carrier when condition "a" is TRUE if neither dropping nor scaling is required to meet the transmit or total power constraints. As a result, we have the following proposed examples according to at least some embodiments of intra-band and inter-band EN-DC, respectively.

[0097] According to at least one embodiment, for in-band EN-DC when condition "a" is true, let The configured power of the LTE carrier is expressed in dB.

[0098]

[0099] Then the NR carrier may be dropped. Otherwise, define

[0100]

[0101] in, This is the upper limit of the E-UTRA power configured in TS 36.101. The maximum NR power needs to exceed the lower value.

[0102] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0103] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin from TS 38.101-1.

[0104] According to at least one other embodiment, for the inter-band EN-DC when condition "a" is true, let Indicates the configured power of the LTE carrier in dB.

[0105]

[0106] Then the NR carrier may be dropped. Otherwise, define

[0107]

[0108] Among them, P CMAX_L,NR From 6.2B.4.1.3 of TS 38.101-3, is the E-UTRA power upper limit of the configured power from TS36.101. The maximum NR power needs to exceed the lower value

[0109] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0110] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin from TS 38.101-1.

[0111] It should be noted that the above embodiment can be modified to include MCG power estimation based on LTE carrier headroom reported by the UE. In particular, the transmitted MCG power can be determined based on the power headroom report of the LTE carrier including the configured Pcmax. With the configured Pcmax and power headroom, P MCG can be estimated as

[0112] P CMAX E-UTRA,c (p) – PHR E-UTRA

[0113] According to at least some of the following embodiments, P CMAX E-UTRA,c (p) – PHR E-UTRA Can be used as a substitute The configuration power is determined by P CMAX_L,NR_DPS .

[0114] More specifically, according to at least one embodiment, for in-band EN-DC when condition "a" is true, let The configured power of the LTE carrier is expressed in dB.

[0115]

[0116] Then the NR carrier may be dropped. Otherwise, define

[0117]

[0118] in, This is the upper limit of the E-UTRA power configured in TS 36.101. The maximum NR power needs to exceed the lower value.

[0119] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0120] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin from TS 38.101-1.

[0121] According to at least one other embodiment, for the inter-band EN-DC when condition "a" is true, let Indicates the configured power of the LTE carrier in dB.

[0122]

[0123] Then the NR carrier may be dropped. Otherwise, define

[0124]

[0125] Among them, P CMAX_L,NR From 6.2B.4.1.3 of TS 38.101-3, is the E-UTRA power upper limit of the configured power from TS36.101. The maximum NR power needs to exceed the lower value

[0126] P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ),

[0127] Among them, T LOW (P CMAX_L,NR_DPS ) is the NR power lower margin from TS 38.101-1.

[0128] The present disclosure attempts to identify how to define requirements for EN-DC dynamic power sharing. Currently, dynamic power sharing UEs only need to prioritize LTE, but do not need to make unused LTE power available for NR carriers. As mentioned above, an important problem with existing systems may include that the UE does not know exactly how much power is sent on the LTE carrier, and therefore does not know how much power is left for the NR carrier.

[0129] Previous solutions have been proposed, but none have been accepted so far. An unresolved issue is how to handle the tolerance of the configuration power.

[0130] Accordingly, according to at least some embodiments of the present application, for EN-DC, it may be necessary to define a new Pcmax,L on the NR carrier for testing purposes taking into account the tolerance of the configured power of the LTE carrier.

[0131] Figure 8A flow chart 800 for managing the use of dynamic power sharing for dual carrier operation in a user equipment is shown, including a determined level for a lower limit of the maximum configured power of a secondary cell group, which takes into account an identified allowed power tolerance in the transmission of the primary cell group. According to at least one embodiment, the method may include identifying 802 an allowed tolerance corresponding to the maximum expected possible deviation between the power level to which the user equipment requests that communications via the primary cell group be set and the actual power level at which corresponding communications via the primary cell group are transmitted. A lower limit level for the maximum configured power of the secondary cell group may be determined 804 while taking into account the allowed tolerance identified relative to any communication via the primary cell group, which enables the user equipment to meet the transmission requirements for communicating via each of the primary cell group and the secondary cell group during dual carrier operation, as well as the total power constraint for any overall communication of the user equipment. The lower limit of the maximum configured power of the carriers of the secondary cell group may be set 806 at the determined level.

[0132] In some cases, the primary cell group and the secondary cell group associated with the dual connectivity mode may include operation according to multiple cellular standards. In some of these cases, the multiple cellular standards may include Evolved Universal Terrestrial Radio Access (E-UTRA) / Long Term Evolution (LTE) and New Radio (NR). In some of these cases, the primary cell group may be associated with the Evolved Universal Terrestrial Radio Access / Long Term Evolution cellular standard, and the secondary cell group may be associated with the New Radio cellular standard.

[0133] In some cases, the user equipment may be configured for intra-band dual carrier operation. In some of these cases, the intra-band dual carrier operation may include an intra-band E-UTRA-NR dual carrier, including an LTE carrier and an NR carrier, and when the condition 10log 10 [p CMAX_E-UTRA,c (p)+p CMAX,f,c,NR (q)]>P EN-DC,tot_L When TRUE, It can represent the configured power of the LTE carrier in dB, and

[0134] in, is the allowed upper tolerance of the configured power of the LTE carrier, and the maximum NR power must equal or exceed the value P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ), where T LOW (P CMAX_L,NR_DPS ) is the allowed lower tolerance of the configured power of the NR carrier.

[0135] In some cases, the user equipment may be configured for inter-band dual carrier operation. In some of these cases, the inter-band dual carrier operation may include an inter-band E-UTRA-NR dual carrier, including an LTE carrier and an NR carrier, and when the condition 10log 10 [p CMAX_E-UTRA,c (p)+p CMAX,f,c,NR (q)]>P EN-DC,tot_L When TRUE, It can represent the configured power of the LTE carrier in dB, and Among them, P CMAX_L,NR is the lower limit of the configured maximum output power, is the upper limit of the configured power of the LTE carrier. Less than or equal to P cmax_E-UTRA In some cases, P CMAX_L,NR =MIN{P EMAX,EN-DC ,(P PowerClass,EN-DC –ΔP PowerClass,EN-DC ),MIN(P EMAX, P NR )-ΔT C_NR ,(P PowerClass –ΔP PowerClass )–MAX(MPR+A-MPR+ΔT IB +ΔT C_NR +ΔT RxSRS ,P-MPR)}.

[0136] In some cases, the emission requirements may include one or more of a spectrum emission mask requirement, an adjacent channel leakage requirement, or a spurious emission requirement. In some of these cases, the spectrum emission mask requirement may include a requirement for a corresponding spectrum emission mask for each carrier that must be met, which is based on a measurement of out-of-channel emissions that do not exceed a predetermined set value. In addition, the adjacent channel leakage requirement may include a requirement that the ratio of power leaked into an adjacent channel relative to the power in the desired channel does not exceed a predetermined set value. In addition, the spurious emission requirement may include a requirement that the amount of power leaked into a spectrum farther than an adjacent channel does not exceed a predetermined set value.

[0137] In some cases, the method may further include verifying support for dynamic power sharing for dual carrier operation, wherein power from the maximum configured power not used to support communications via the primary cell group may be used to support communications via the secondary cell group. In some of these cases, verifying support for dynamic power sharing for dual carrier operation may include the following qualitative requirement: when the power measured for communications associated with the primary cell group decreases, the power measured for communications associated with the secondary cell group increases. In the same or other cases, verifying support for dynamic power sharing for dual carrier operation may include the following qualitative requirement: after considering the amount of power measured from communications via the primary cell group and the identified allowed tolerance corresponding to the maximum expected possible deviation, the power measured for communications associated with the secondary cell group must exceed the lower limit of the maximum configured power of the secondary cell group.

[0138] Fig. 9 A flow chart 900 for managing the use of dynamic power sharing for dual carrier operation in a user equipment is shown, including a determined lower limit level of the maximum configured power of the secondary cell group, which takes into account the allowed tolerance identified from the power headroom report. According to at least one embodiment, the method may include receiving 902 a power headroom report from the primary cell group. The allowed tolerance may be identified 904 from the received power headroom report, which includes the maximum expected possible deviation between the power level to which the user equipment requests that the communication via the primary cell group be set and the actual power level at which the corresponding communication via the primary cell group is sent. The lower limit level of the maximum configured power of the secondary cell group may be determined 906 while taking into account the allowed tolerance identified relative to any communication via the primary cell group, which enables the user equipment to meet the transmission requirements for communicating via each of the primary cell group and the secondary cell group during dual carrier operation, as well as the total power constraint of any overall communication of the user equipment. The lower limit of the maximum configured power of the carriers of the secondary cell group may be set 908 at the determined level.

[0139] In some cases, the primary cell group and the secondary cell group associated with the dual connectivity mode may include operation according to multiple cellular standards. In some of these cases, the multiple cellular standards may include Evolved Universal Terrestrial Radio Access (E-UTRA) / Long Term Evolution (LTE) and New Radio (NR). In some of these cases, the primary cell group may be associated with the Evolved Universal Terrestrial Radio Access / Long Term Evolution cellular standard, and the secondary cell group may be associated with the New Radio cellular standard.

[0140] In some cases, the user equipment may be configured for intra-band dual carrier operation. In some of these cases, the intra-band dual carrier operation may include an intra-band E-UTRA-NR dual carrier, including an LTE carrier and an NR carrier, and when the condition 10log 10 [p CMAX_E-UTRA,c(p)+p CMAX,f,c,NR (q)]>P EN-DC,tot_L When TRUE, It can be expressed as the power configured for the LTE carrier in dB, where , the NR carrier may be discarded, otherwise it is defined

[0141] in, The maximum NR power must be equal to or greater than the value P. CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ), where T LOW (P CMAX_L,NR_DPS ) is the allowed lower tolerance of the NR carrier configuration power.

[0142] In some cases, the user equipment may be configured for inter-band dual carrier operation. In some of these cases, the inter-band dual carrier operation may include an inter-band E-UTRA-NR dual carrier, including an LTE carrier and an NR carrier, and when the condition 10log 10 [p CMAX_E-UTRA,c (p)+p CMAX,f,c,NR (q)]>P EN-DC,tot_L When TRUE, It can represent the configured power of the LTE carrier in dB, where , the NR carrier may be discarded, otherwise, define Among them, P CMAX_L,NR is the lower limit of the configured maximum output power, is the upper limit of the configured power of the LTE carrier, and the maximum NR power must exceed the value P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ), where T LOW (P CMAX_L,NR_DPS ) is the allowed lower tolerance of the configured power of the NR carrier.

[0143] In some cases, the emission requirements may include one or more of a spectrum emission mask requirement, an adjacent channel leakage requirement, or a spurious emission requirement. In some of these cases, the spectrum emission mask requirement may include a requirement for a corresponding spectrum emission mask for each carrier that must be met, which is based on a measurement of out-of-channel emissions that do not exceed a predetermined set value. In addition, the adjacent channel leakage requirement may include a requirement that the ratio of power leaked into an adjacent channel relative to the power in the desired channel does not exceed a predetermined set value. In addition, the spurious emission requirement may include a requirement that the amount of power leaked into a spectrum farther than an adjacent channel does not exceed a predetermined set value.

[0144] In some cases, the method may further include verifying support for dynamic power sharing for dual carrier operation, wherein power from the maximum configured power not used to support communications via the primary cell group may be used to support communications via the secondary cell group. In some of these cases, verifying support for dynamic power sharing for dual carrier operation may include the following qualitative requirement: when the power measured for communications associated with the primary cell group decreases, the power measured for communications associated with the secondary cell group increases. In the same or other cases, verifying support for dynamic power sharing for dual carrier operation may include the following qualitative requirement: after considering the amount of power measured from communications via the primary cell group and the identified allowed tolerance corresponding to the maximum expected possible deviation, the power measured for communications associated with the secondary cell group must exceed the lower limit of the maximum configured power of the secondary cell group.

[0145] It should be understood that, despite the specific steps shown in the figure, a variety of additional or different steps may be performed according to the embodiment, and one or more specific steps may be rearranged, repeated or completely eliminated according to the embodiment. In addition, some of the steps performed may be repeated simultaneously on an ongoing or continuous basis while other steps are performed. In addition, different steps may be performed by different elements or in a single element of the disclosed embodiment. In addition, network entities such as base stations, transmission and reception points, or other network entities may perform the interactive operation of the UE. For example, a network entity may send a signal received by the UE and may receive a signal sent by the UE. The network entity may also process and operate on the transmitted and received signals.

[0146] Fig.101 is an example block diagram of an apparatus 1000, such as a wireless communication device 110, according to a possible embodiment. The apparatus 1000 may include a housing 1010, a controller 1020 within the housing 1010, an audio input and output circuit 1030 coupled to the controller 1020, a display 1040 coupled to the controller 1020, a transceiver 1050 coupled to the controller 1020, an antenna 1055 coupled to the transceiver 1050, a user interface 1060 coupled to the controller 1020, a memory 1070 coupled to the controller 1020, and a network interface 1080 coupled to the controller 1020. The apparatus 1000 may perform the methods described in all embodiments.

[0147] The display 1040 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 1050 may include a transmitter and / or a receiver. The audio input and output circuit 1030 may include a microphone, a speaker, a transducer, or any other audio input and output circuit. The user interface 1060 may include a keypad, a keyboard, a button, a touch pad, a joystick, a touch screen display, another additional display, or any other device that can be used to provide an interface between a user and an electronic device. The network interface 1080 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 the device to a network, device, or computer and can send and receive data communication signals. The memory 1070 may include a random access memory, a read-only memory, an optical memory, a solid-state memory, a flash memory, a removable memory, a hard drive, a cache, or any other memory that can be coupled to the device.

[0148] Device 1000 or controller 1020 may implement any operating system, such as Microsoft or Android TM or any other operating system. The device operating software can be written in any programming language, such as C, C++, Java or Visual Basic. The device software can also run on an application framework, such as frame, Framework or any other application framework. The software and / or operating system may be stored in the memory 1070 or elsewhere on the device 1000. The device 1000 or the controller 1020 may also use hardware to implement the disclosed operations. For example, the controller 1020 may be any programmable processor. The disclosed embodiments may also be implemented in a general or special purpose computer, a programmed microprocessor or microprocessor, a peripheral integrated circuit element, an application specific integrated circuit or other integrated circuit, a hardware / electronic logic circuit (e.g., a discrete component circuit) or a programmable logic device (e.g., a programmable logic array, a field programmable gate array), etc. In general, the controller 1020 may be any controller or processor device or a device capable of operating the device and implementing the disclosed embodiments. Some or all of the additional elements of the device 1000 may also perform some or all of the operations of the disclosed embodiments.

[0149] The method of the present disclosure can be implemented on a programmed processor. However, the controller, flow chart and module can also be implemented on a general or special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit components, an integrated circuit, a hardware electronic or logic circuit (e.g., a discrete component circuit) or a programmable logic device, etc. In general, any device on which a finite state machine capable of implementing the flow chart shown in the figure resides can be used to implement the processor function of the present disclosure.

[0150] Although the present disclosure has been described by its specific embodiments, it is apparent that many substitutions, modifications and variations will be apparent to those skilled in the art. For example, the various components of the embodiments may be interchanged, added or replaced in other embodiments. In addition, all elements of each of the accompanying drawings are not necessary for the operation of the disclosed embodiments. For example, it will enable a person of ordinary skill in the field of the disclosed embodiments to make and use the teachings of the present disclosure by simply adopting the elements of the independent claims. Therefore, the embodiments of the present disclosure as set forth herein are intended to be illustrative, rather than restrictive. Various changes may be made without departing from the spirit and scope of the present disclosure.

[0151] In this document, relational terms such as "first" and "second" may be used only to distinguish one entity or action from another entity or action, without requiring or implying any actual such relationship or order between such entities or actions. The phrase "at least one", "at least one selected from the following group", or "at least one selected from the following table" followed by a list is defined to represent one, some or all, but not necessarily all, of the elements in the list. The terms "include", "comprises", "contains", or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article, or device including the list of elements not only includes these elements, but may also include other elements not explicitly listed or other elements inherent to such processes, methods, articles, or devices. In the absence of more restrictions, elements starting with "one" or "an" do not exclude the presence of other identical elements in the process, method, article, or device including the element. In addition, the term "another" is defined as at least the second or more. As used herein, the terms "includes" and "having" are defined as "comprising". In addition, the background technology section is written as the inventor's understanding of the context of some embodiments at the time of filing, and includes the inventor's own recognition of any problems with the prior art and / or problems encountered in the inventor's own work.

Claims

1. A method of managing usage of dynamic power sharing for dual carrier operation in a user equipment, the dual carrier operation comprising respective communications via a primary cell group and a secondary cell group, the method comprising: receiving a power headroom report from the primary cell group; identifying an allowed tolerance from the received power headroom report, the allowed tolerance comprising a maximum expected possible deviation between a power level to which the user equipment requests that communications via the primary cell group be set and an actual power level at which corresponding communications via the primary cell group are sent; determining a lower limit of the maximum configured power of the secondary cell group at a level that enables the user equipment to meet transmission requirements for communicating via each of the primary cell group and the secondary cell group during the dual carrier operation, and an overall power constraint for any overall communication of the user equipment, while taking into account an allowed tolerance identified relative to any communication via the primary cell group; and The lower limit of the maximum configured power of the carrier of the secondary cell group is set at the determined level.

2. The method according to claim 1, wherein: The primary cell group and the secondary cell group associated with the dual connectivity mode include operations according to multiple cellular standards.

3. The method according to claim 2, wherein: The multiple cellular standards include Evolved Universal Terrestrial Radio Access (E-UTRA) / Long Term Evolution (LTE) and New Radio (NR).

4. The method according to claim 3, wherein: The primary cell group is associated with the Evolved Universal Terrestrial Radio Access / Long Term Evolution cellular standard, and the secondary cell group is associated with the New Radio cellular standard.

5. The method according to claim 1, wherein: The user equipment is configured for in-band dual carrier operation.

6. The method according to claim 5, wherein: The intra-band dual-carrier operation includes an intra-band E-UTRA-NR dual-carrier, including an LTE carrier and an NR carrier, and when the condition 10log 10 [p CMAX_E-UTRA,c (p)+p CMAX,f,c,NR (q)]>P EN-DC,tot_L When TRUE, represents the configured power of the LTE carrier in dB, where If P is CMAX_L,NR_DPS = in, is the allowed upper tolerance of the configured power of the LTE carrier, and the maximum NR power must equal or exceed the value P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ), where T LOW (P CMAX_L,NR_DPS ) is the allowed lower tolerance of the configured power of the NR carrier.

7. The method according to claim 1, wherein: The user equipment is configured for inter-band dual carrier operation.

8. The method according to claim 7, wherein: The inter-band dual carrier operation includes an inter-band E-UTRA-NR dual carrier, including an LTE carrier and an NR carrier, and when the condition 10log 10 [p CMAX_E-UTRA,c (p)+p CMAX,f,c,NR (q)]>P EN-DC,tot_L When TRUE, represents the configured power of the LTE carrier in dB, and wherein, when The NR carrier can be dropped when Among them, P CMAX_L,NR is the lower limit of the configured maximum output power, is the permissible upper limit of the configured power of the LTE carrier, and the maximum NR power must exceed the value P CMAX_L,NR_DPS –T LOW (P CMAX_L,NR_DPS ), where T LOW (P CMAX_L,NR_DPS ) is the allowed lower tolerance of the configured power of the NR carrier.

9. The method according to claim 1, wherein: The emission requirements include one or more of spectrum emission mask requirements, adjacent channel leakage requirements, or spurious emission requirements.

10. The method according to claim 9, wherein: The spectrum emission mask requirements include requirements for a respective spectrum emission mask for each carrier that must be met, which are based on measurements of out-of-channel emissions not exceeding set absolute values.

11. The method according to claim 9, wherein: The adjacent channel leakage requirement includes a requirement that a ratio of power leaked into an adjacent channel relative to power in a desired channel does not exceed a predetermined set value.

12. The method according to claim 9, wherein: The spurious emission requirement includes a requirement that the amount of power leaking into a spectrum farther than the adjacent channel does not exceed a predetermined set value.

13. The method of claim 1, further comprising verifying support for dynamic power sharing for dual carrier operation, wherein: Power from a maximum configured power not used to support communications via the primary cell group is enabled to be used to support communications via the secondary cell group.

14. The method according to claim 13, wherein: Verifying support for dynamic power sharing for dual carrier operation includes the qualitative requirement that when power measured for communications associated with the primary cell group decreases, power measured for communications associated with the secondary cell group increases.

15. The method according to claim 13, wherein: Verifying support for dynamic power sharing for dual carrier operation includes the following qualitative requirement: after taking into account the amount of power measured from communications via the primary cell group and the identified allowed tolerance corresponding to the maximum expected possible deviation, the power measured for communications associated with the secondary cell group must exceed the lower limit of the maximum configured power of the secondary cell group.

16. A user equipment for managing the use of dynamic power sharing for dual carrier operation, the dual carrier operation comprising respective communications via a primary cell group and a secondary cell group, the user equipment comprising: a transceiver, the transceiver receiving a power headroom report from the primary cell group; as well as a controller coupled to the transceiver, the controller identifying an allowed tolerance from the received power headroom report, the allowed tolerance comprising a maximum expected possible deviation between a power level to which the user equipment requests that communications via the primary cell group be set and an actual power level at which corresponding communications via the primary cell group are sent; wherein the controller further determines a level of a lower limit of the maximum configured power of the secondary cell group, while taking into account an allowed tolerance identified relative to any communication via the primary cell group, that enables the user equipment to meet transmission requirements for communicating via each of the primary cell group and the secondary cell group during the dual-carrier operation, and a total power constraint for any overall communication of the user equipment; and The controller further sets a lower limit of the maximum configured power of the carrier of the secondary cell group at the determined level.

17. The user equipment according to claim 16, wherein: The primary cell group and the secondary cell group associated with the dual connectivity mode include operations according to multiple cellular standards.

18. The user equipment according to claim 17, wherein: The multiple cellular standards include Evolved Universal Terrestrial Radio Access (E-UTRA) / Long Term Evolution (LTE) and New Radio (NR).

19. The user equipment according to claim 18, wherein: The primary cell group is associated with the Evolved Universal Terrestrial Radio Access / Long Term Evolution cellular standard, and the secondary cell group is associated with the New Radio cellular standard.

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