CN112243294A

CN112243294A - System and method for providing look-ahead dynamic power control for carrier aggregation

Info

Publication number: CN112243294A
Application number: CN202010663288.6A
Authority: CN
Inventors: 裵正铉; 哈米德·萨贝尔; 郑元胜
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2019-07-18
Filing date: 2020-07-10
Publication date: 2021-01-19

Abstract

A system and method for providing look-ahead dynamic power control for carrier aggregation is disclosed. Methods and apparatus are provided for providing dynamic power sharing on a User Equipment (UE). A first uplink transmission is configured. An offset is determined from a starting symbol of the first uplink transmission. Based on the offset, a group of overlapping uplink transmissions on one or more Component Carriers (CCs) is defined. The set of overlapping uplink transmissions includes at least a first uplink transmission. Sharing total power between uplink transmissions in the group of overlapping uplink transmissions.

Description

System and method for providing look-ahead dynamic power control for carrier aggregation

This application is based on and claims priority from U.S. provisional patent application filed at U.S. patent and trademark office (USPTO) on day 2, 7, 2020 and assigned serial number 62/971,708, U.S. provisional patent application filed at USPTO on day 7, 18, 2019 and assigned serial number 62/875,756, and U.S. provisional patent application filed on USPTO on day 7, 18, 2019 and assigned serial number 62/875,801, the contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates generally to Carrier Aggregation (CA) power control and, more particularly, to a method and system for look-ahead dynamic power control for CA.

Background

CA is introduced in the third generation partnership project (3GPP) to allow a User Equipment (UE) to simultaneously transmit and receive data on multiple Component Carriers (CCs) from a single node (e.g., evolved node b (enb)). CA increases user throughput as the aggregate bandwidth increases.

In 3GPP release 15(Rel-15), there is no timeline for prioritization of UE Uplink (UL) power control in CA, and priority rules are applied in a symbol-by-symbol manner. This varying symbol-by-symbol power during a single transmission may be disruptive if the transmission duration is short.

Dual Connectivity (DC) for small cell enhancements is introduced in 3GPP Rel-12. DC allows a UE to simultaneously transmit and receive data on multiple component carriers from two Cell Groups (CGs) via a primary node and a secondary node. DC may increase user throughput, provide mobility robustness, and support load balancing between enbs. The DC may provide higher per-user throughput by offloading data from the primary node to the secondary node when the primary node is overloaded compared to a single connection.

In a typical scenario, a UE is first connected to a primary node and then to a secondary node. Evolved Universal Mobile Telecommunications System (UMTS) terrestrial radio access network (E-UTRAN) refers to generation 4 (4G) or Long Term Evolution (LTE). E-UTRAN-New Radio (NR) -DC (EN-DC), NR-E-utra (ne) -DC and NR-DC (NN-DC) refer to DC scenarios where the primary and secondary nodes are (eNB, next generation node b (gNB)), (gNB, eNB) and (gNB ), respectively. The eNB is used to define the node for 4G/LTE and the gNB is used to define the node for 5G/NR. Rel-15 supports EN-DC, NE-DC and NN-DC (or NR-DC). A deployment scenario in which nodes have different Radio Access Technologies (RATs) is referred to as multi-RAT DC (MR-DC). NE-DC and EN-DC are two examples of MR-DC.

FIG. 1 is a diagram illustrating an NN-DC deployment scenario. The UE-1102 is connected to a single NR node (gNB), in particular, to a primary gNB (mgnb) 104. UE-2106 is also connected to a single NR node (gNB), specifically, to secondary gNB-2(SgNB-2) 108. UE-3110 is connected to two NR nodes (gNB) simultaneously, specifically MgNB 104 and SgNB-1112. The MgNB configures a set of serving cells within a Master Cell Group (MCG), and each SgNB configures a set of serving cells within a respective Secondary Cell Group (SCG). The primary cell of the MCG is referred to as PCell, and the secondary cell of the MCG is referred to as SCell. The primary cell of the SCG is called PSCell. PCell and PSCell are also known as special cells (SpCell).

Disclosure of Invention

According to one embodiment, a method for providing dynamic power sharing on a UE is provided. A first uplink transmission is configured. An offset is determined from a starting symbol of the first uplink transmission. Based on the offset, a group of overlapping uplink transmissions on one or more CCs is defined. The set of overlapping uplink transmissions includes at least a first uplink transmission. Sharing total power between uplink transmissions in the group of overlapping uplink transmissions.

According to one embodiment, a UE is provided, wherein the UE includes a processor and a non-transitory computer-readable storage medium storing instructions. The instructions, when executed, cause a processor to configure a first uplink transmission. The instructions also cause the processor to determine an offset from a starting symbol of the first uplink transmission. The instructions also cause the processor to define a group of overlapping uplink transmissions on the one or more CCs that includes at least the first uplink transmission based on the offset. The instructions also cause the processor to share a total power between uplink transmissions in the group of overlapping uplink transmissions.

Drawings

The above and other aspects, features and advantages of particular embodiments of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

FIG. 1 is a diagram illustrating an NN-DC deployment scenario;

fig. 2 is a diagram illustrating CA power control according to an embodiment;

fig. 3 is a diagram illustrating overlapping transmission groups according to an embodiment;

FIG. 4 is a diagram illustrating a power control block according to an embodiment;

FIG. 5 is a diagram illustrating a next power control block according to an embodiment;

FIG. 6 is a diagram illustrating the resulting maximum allowed power in the power control block of FIG. 5, according to an embodiment;

FIG. 7 is a diagram illustrating a DPS with a look-ahead according to an embodiment;

fig. 8 is a diagram illustrating dynamic power sharing with configured grant transmissions, according to an embodiment;

fig. 9 is a flow diagram illustrating a method for providing dynamic power sharing on a UE, in accordance with an embodiment;

FIG. 10 is a flow diagram illustrating a method for defining groups of overlapping transmissions according to an embodiment; and

fig. 11 is a block diagram of an electronic device in a network environment according to an embodiment of the disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure are described in detail with reference to the accompanying drawings. It should be noted that, although the same elements are shown in different drawings, they will be denoted by the same reference numerals. In the following description, only specific details such as detailed configurations and components are provided to assist in a comprehensive understanding of embodiments of the disclosure. Thus, it should be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope of the disclosure. Moreover, descriptions of well-known functions and constructions are omitted for clarity and conciseness. The terms described below are terms defined in consideration of functions in the present disclosure, and may be different according to a user, a user's intention, or a habit. Therefore, the definitions of the terms should be determined based on the contents throughout the specification.

The present disclosure is susceptible to various modifications and embodiments, and embodiments thereof will be described below in detail with reference to the accompanying drawings. It should be understood, however, that the disclosure is not limited to these embodiments, but includes all modifications, equivalents, and alternatives falling within the scope of the disclosure.

Although terms including ordinal numbers such as first, second, etc., may be used to describe various elements, structural elements are not limited by the terms. The terms are only used to distinguish one element from another. For example, a first structural element may be termed a second structural element without departing from the scope of the present disclosure. Similarly, the second structural element may also be referred to as the first structural element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated items.

The terminology used herein is for the purpose of describing various embodiments of the disclosure only and is not intended to be limiting of the disclosure. The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In the present disclosure, it is to be understood that the terms "comprises" or "comprising" indicate the presence of features, numbers, steps, operations, structural elements, components, or combinations thereof, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, structural elements, components, or combinations thereof.

Unless defined differently, all terms used herein have the same meaning as understood by those skilled in the art to which this disclosure belongs. Terms such as those defined in general dictionaries should be interpreted as having a meaning that is the same as the context in the relevant art and will not be interpreted as having an ideal or excessively formal meaning unless clearly defined in this disclosure.

The electronic device according to one embodiment may be one of various types of electronic devices. The electronic device may comprise, for example, a portable communication device (e.g., a smartphone), a computer, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to one embodiment of the present disclosure, the electronic devices are not limited to those described above.

The terms used in the present disclosure are not intended to limit the present disclosure, but are intended to include various changes, equivalents, or alternatives to the corresponding embodiments. With respect to the description of the figures, like reference numerals may be used to refer to like or related elements. The singular form of a noun corresponding to an item may include one or more items unless the context clearly dictates otherwise. As used herein, each of such phrases, such as "a or B," "at least one of a and B," "at least one of a or B," "A, B or C," "at least one of A, B and C," and "at least one of A, B or C," may include all possible combinations of the items listed together in the respective one of the phrases. As used herein, terms such as "1 st," "2 nd," "first," and "second" may be used to distinguish a respective component from another component, but are not intended to limit the components in other respects (e.g., importance or order). It is intended that an element (e.g., a first element) be "coupled to," "connected with," or "connected to" another element (e.g., a second element) with or without the terms "operable" or "communicatively coupled" to indicate that the element may be coupled with the other element directly (e.g., wired), wirelessly, or via a third element.

As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms such as, for example, "logic," logic block, "" component, "or" circuitry. A module may be a single integrated component or a minimal unit or portion of a single integrated component adapted to perform one or more functions. For example, according to an embodiment, the modules may be implemented in the form of Application Specific Integrated Circuits (ASICs).

To determine the transmission power on a given cell for DC, a power control mechanism is employed to determine the transmission power within each CG. Such a power determination mechanism is called CA power control and is intended to determine the power of each transmission on the set of serving cells within the CG. If the UE is in DC mode, the power of the MCG and SCG is determined using CA power control, where the MCG and SCG may also interact between the two CA power control mechanisms for the CG. However, if the UE is not in DC mode (i.e., configured with only a set of serving cells in one CG), CA power control is employed to determine the power of transmissions on the CG.

Determining a maximum total power P for CG for a UE with CA power control_CG. The power of each individual transmission is determined according to a single transmission power control scheme. With CA power control, it is ensured that the total power of any given symbol across all serving cells does not exceed the maximum total power P_CG. If the total power exceeds the maximum total power P_CGThe priority rule is applied to reduce/reduce the power of the lowest priority channel/signal such that the total power is at the maximum total power P_CGAnd (4) the following steps.

Fig. 2 is a diagram illustrating CA power control according to an embodiment. Physical Uplink Shared Channel (PUSCH) -1202 on CC-0 is scheduled by Downlink Control Information (DCI) -1 on Physical Downlink Control Channel (PDCCH) 204. PUSCH-2206 on CC-1 is scheduled by DCI-2 on PDCCH 208. PUSCH-3210 is scheduled on CC-2 by DCI-3 on PDCCH 212. PUSCH-4214 is scheduled on CC-3 by DCI-4 on PDCCH 216. PUSCH-5218 is scheduled on CC-3 and PUSCH-6220 is scheduled on CC-4. The power of PUSCH-1202, PUSCH-2206, PUSCH-3210, PUSCH-4214, PUSCH-5218 and PUSCH-6220 is P1, P2, P3, P4, P5 and P6 respectively. Ensuring that the power of PUSCH-4214 is less than the maximum total power P_CG(i.e., P4 < P_CG). Further, the sum of the powers of PUSCH-2206, PUSCH-3210, PUSCH-5218 and PUSCH-6220 is ensured to be less than the maximum total power P_CG(i.e., P2+ P3+ P5+ P6 < P_CG). In addition, PUSCH-1202 is guaranteedIs less than the maximum total power P_CG(P1＜P_CG)。

For illustrative purposes only, uplink transmissions are shown and described in embodiments herein as PUSCH. The uplink transmission may be implemented as any uplink channel/signal configured via DCI, such as, for example, Channel State Information (CSI), PUSCH, and Physical Uplink Control Channel (PUCCH). The uplink transmission may also be implemented as any uplink channel/signal configured via a configured grant, such as, for example, Radio Resource Control (RRC), Cell Group (CG) -PUSCH, PUCCH, Sounding Reference Signal (SRS), and Physical Random Access Channel (PRACH).

Typically, when determining the power of a particular transmission opportunity, other overlapping transmissions in other CCs are considered jointly if they are semi-static or if their corresponding DCIs are transmitted early enough.

A group of overlapping transmissions may be considered a group of transmissions, where each transmission overlaps at least one other transmission in the same time domain. Furthermore, in the time domain, there should not be any time instances at which no transmission occurs. Further, transmissions outside the group do not overlap with transmissions inside the group.

For a group of overlapping uplink transmissions, the preamble transmission of the group is determined to be the transmission within the group having the earliest starting symbol. For CCs other than the CC to which the preamble transmission belongs, an offset X is defined_μ. Offset X is defined as the maximum X of all μ of the UL transmission_μI.e. X is max_μX_μ. Discarding from the group a dynamic grant based transmission having a corresponding scheduling DCI transmitted on the PDCCH after a corresponding offset X. The resulting final set is used to estimate power.

The offset X is calculated as set forth in equation (1) below_μAnd defining an offset X for each CC based on the PDCCH decoding time and the power calculation and adjustment time_μWherein the PUSCH preparation time is an upper limit for the PDCCH decoding time and the power calculation and adjustment time.

Is PUSCH preparation time (e.g., as defined in section 6.4 of TS 38.214), and the time unit is in the symbol of the associated CC. α is defined between 0 and 1.μ corresponds to a subcarrier spacing (SCS) of DL or SCS of UL, where PDCCH carrying DCI scheduling PUSCH is transmitted with DL and PUSCH is to be transmitted with UL. The PUSCH preparation time is based on PUSCH timing capability 1 as set forth in table 1, or on PUSCH timing capability 2 as set forth in table 2.

TABLE 1

μ	PUSCH preparation time N₂[ symbol]
		0	10
1	12
		2	23
3	36

TABLE 2

μ	PUSCH preparation time N₂[ symbol]
		0	5
1	5.5
		2	11 for the frequency range 1

Referring now to fig. 3, a diagram illustrates overlapping transmission groups, according to an embodiment. PUSCH-1302 is scheduled on CC-1 (where μ ═ μ 1) through DCI on PDCCH 304. PUSCH-2306 is scheduled on CC-2 (where μ ═ μ 2) with DCI on PDCCH 308. PUSCH-3310 is scheduled on CC-3 (where μ ═ μ 3) with DCI on PDCCH 312. PUSCH-1302, PUSCH-2306, and PUSCH-3310 form overlapping transmission groups. PUSCH-2306 is a preamble transmission. Since PDCCH 304 precedes offset X, which is measured from the starting symbol of PUSCH-2306, PUSCH-1302 is maintained in a transmission group. X_μ1、X_μ2And X_μ3Offsets for PUSCH-1302, PUSCH-2306, and PUSCH-3310, respectively. As mentioned above, X is defined as X_μ1、X_μ2And X_μ3Is measured. Since PDCCH 312 arrives within offset X measured from the starting symbol of PUSCH-2306, PUSCH-3310 is removed from the transmission group. PUSCH-3310 joins future groups.

The offset X ensures that information is received from all DCI when determining power.

Thus, according to an embodiment, the decision boundary is moved to the beginning of the preamble transmission, since the same power is sought to be maintained throughout the transmission. Future transmissions may be enabled as long as their presence is known early enough.

The modified set of overlapping transmissions set forth in fig. 3 is referred to as a power control block.

Fig. 4 is a diagram illustrating a power control block according to an embodiment. The power control blocks include PUSCH-1402 on CC-1 and PUSCH-2406 on CC-2.

Generally, as described above with respect to fig. 3, the power control chunks comprise PUSCH sets scheduled/triggered by DCI that satisfies a timeline. Any two PUSCHs in the power control block directly or indirectly overlap each other. The two PUSCHs directly overlap if both are transmitted in at least one common symbol. The two PUSCHs are indirectly overlapped through another PUSCH. Specifically, when PUSCH a and PUSCH B do not directly overlap with each other but each directly overlaps PUSCH C, PUSCH a and PUSCH B indirectly overlap. The two PUSCHs may be indirectly overlapped through a directly or indirectly overlapped PUSCH set.

The power control block may include a configured grant PUSCH, any other uplink channel/signal configured via a grant, or any other uplink channel/signal configured via DCI.

The timeline for the power control chunk is defined relative to the transmission in the power control chunk with the earliest starting symbol (referred to as the preamble transmission).

Any dynamically granted uplink transmission with DCI arriving X symbols after before starting the preamble transmission is not included in the power control chunks.

The network may configure the UE via RRC configuration such that the power control block includes only the channel/signal with the earliest start time (i.e., the preamble channel/signal). The next power control block will include the channel/signal with the second earliest start time.

For a given power control chunk, the UE allocates power for UL transmissions based on priority order while maintaining the same power during one transmission.

To achieve allocation, a set is identified that contains all transmissions in a power control block. A single transmission with the highest priority is identified from the transmissions in the set. The identified transmission is allocated scheduled power. If the total current power (i.e., the sum of the powers of all current and previously identified transmissions) exceeds the maximum allowed power in at least one symbol of the transmission, the power of the currently identified transmission is scaled down such that the total current power does not exceed the maximum allowed power. If the power of the currently identified transmission is scaled down to zero, the identified transmission is discarded. The identified transmission is removed from the set and if the modified set is not empty, the next transmission with the highest priority is identified from the remaining transmissions in the set and the process is repeated.

Power for PUSCH-1402 is P₁And the power for PUSCH-2406 is P₂. Assume that there is no uplink transmission before the scheduled DCI for PUSCH-2406 arrives. The maximum allowed power for the entire duration of the power control block n is P_max. Suppose P_max＜P₁+P₂And PUSCH-1402 has a higher priority, PUSCH-1402 will be assigned P₁And PUSCH-2406 will be allocated

Due to potential overlap conditions between different power control blocks, the phrase "maximum allowed power" has been used instead of a constant value (e.g., P_max). PUSCH-3310 is removed from the formation of the power control blocks in fig. 3. Fig. 5 is a diagram illustrating a next power control block according to an embodiment. The overlapping transmission includes PUSCH-3510 on CC-3, PUSCH-4512 on CC-2 and PUSCH-5514 on CC-1 and belongs to the next chunk n + 1. The chunk n +1 of fig. 5 overlaps the chunk n of fig. 3. Specifically, PUSCH-3510 (PUSCH-3310 of fig. 3) partially overlaps PUSCH-1302 of fig. 3 in the time domain.

The priority rules for the different chunks are chronological. Therefore, the power P of PUSCH-1302 is employed in the overlapping time region₁. The first solution reduces the maximum allowed power in the overlapping region to maintain a constant maximum power P at each instant_max. FIG. 6 is a block diagram illustrating power control of FIG. 5 according to an embodimentA resulting plot of maximum allowed power. The resulting maximum allowed power in chunk n +1 is not constant.

As shown with respect to fig. 6, applying such a dynamic maximum allowed power may be challenging for the UE. Another embodiment discards all transmissions that overlap with a previous power control chunk (e.g., PUSCH-3510 of fig. 5). In additional embodiments, the gNB ensures that no overlapping power control chunks occur.

Power sharing methods for DC may be classified as semi-Static Power Sharing (SPS) or Dynamic Power Sharing (DPS).

For SPS, the UE is configured to have maximum total power P_CGDetermine the transmission power within each CG, wherein the maximum total power P_CGIs determined in consideration of semi-static transmission information in other CGs.

For DPS, the power determination for transmission in one CG is determined by considering the dynamically scheduled uplink transmissions in one or more other CGs, which may overlap.

With DPS, the UE considers overlapping transmissions dynamically scheduled on other CCs. The DPS must define a timeline for determining which DCIs should be considered.

"look-ahead" generally refers to the behavior of a UE to determine aspects of signal/channel transmission at a given transmission opportunity by considering subsequent transmissions.

For a look-ahead based power sharing scheme for NN-DC, the transmit power of UL transmissions in the MCG is determined according to the SCG independent CA power control rules. For at time T₀At the beginning of UL transmission on SCG, the UE checks for an offset (T) in MCG₀-T_offset) Possible PDCCHs previously received and scheduling overlapping UL PUSCH transmissions on the MCG. If such a PDCCH is present, the UE determines a UL PUSCH transmission on SCG with the following maximum allowed SCG power: the maximum allowed SCG power is the smaller of the maximum SCG power and the total NN-DC power minus the actual transmission power of the MCG (i.e.,

). If no such PDCCH exists, the UE determines the UL transmission on SCG with the following maximum allowed power: the maximum allowable power is the total NN-DC power

UE does not expect to be at T₀-T_offsetThe PDCCH received thereafter scheduling MCG UL PUSCH transmissions overlaps with SCG transmissions.

For DPS with look-ahead, the total power P of the MCG_MCGTotal power P of SCG_SCGAnd total power across all CGs

Is provided to the UE.

Fig. 7 is a diagram illustrating a DPS with a look-ahead, according to an embodiment. In FIG. 7, two CCs (CC-0, CC-1) are configured in the SCG, and three CCs (CC-2, CC-3, CC-4) are configured in the MCG. PUSCH-1702 on CC-0 of SCG is scheduled by DCI-1 on PDCCH 704 on CC-0. PUSCH-2706 on CC-1 of SCG is scheduled by DCI-2 on PDCCH 708 on CC-1. PUSCH-3710 on CC-2 of MCG is scheduled by DCI-3 on PDCCH 712 on CC-2. PUSCH-4714 on CC-3 of MCG is scheduled by DCI-4 on PDCCH 716 on CC-3. PUSCH-5718 on CC-4 of MCG is scheduled by DCI-5 on PDCCH 720 on CC-4.

The power determination of the MCG is performed independently of the SCG. Power P3 is determined for PUSCH-3710, power P4 is determined for PUSCH-4714, and power P5 is determined for PUSCH-5718. To determine the time T in SCG₀The power of the earliest starting PUSCH (i.e., PUSCH-2706), the UE considers the overlap with PUSCH-2706 in MCG and at T₀-T_offsetAll PUSCHs (i.e., PUSCH-4714 and PUSCH-5718) for which a scheduling PDCCH was previously received. Due to the offset period (or at T)₀-T_offsetThereafter) receives PDCCH 712 of PUSCH-3710, and thus overlapping transmission with PUSCH-2706 is not scheduled. Subtracting the total consumed power in the MCG (i.e., P) from the total available power₄+P₅) And passes the obtained results to the SCG. Available power

The maximum SCG power used as the power to calculate PUSCH-2706.

Thus, the time offset T_offsetMust be determined and may be based in part on the PUSCH preparation time T_proc，2。

In one embodiment, to determine the power of the SCG transmission occasion, the timing offset is set large enough so that the UE is provided sufficient time to decode the PDCCH on the MCG that schedules the overlapping PUSCH transmission on the MCG. Sufficient time may be provided for decoding the scheduling DCI on the SCG and preparing for SCG transmission. Uplink transmission on the MCG may or may not be included depending on the UE implementation.

According to an embodiment, T_offsetIs corresponding to the above-mentioned PUSCH preparation time, and μ corresponds to one SCS configuration of a PDCCH scheduling overlapping PUSCH transmission on the MCG, a PDCCH scheduling SCG PUSCH transmission timing, and an SCS configuration of an SCG PUSCH transmission timing.

More particularly, to determine the value for T_offsetProviding the following inputs: serving cell

An uplink transmission opportunity in the SCG on; serving cell

PDCCH of uplink transmission in the scheduling SCG; set of serving cells in MCG

Such that there is at least one DCI on each cell, wherein the at least one DCI schedules uplink transmissions on MCG cells that overlap in time with an SCG transmission opportunity.

Is set as a cell

The effective bandwidth part (BWP).

Is set as a cell

Effective BWP. M is initially set to 1, and at the same time M < M,

is set as a cell

Effective BWP.

Accordingly, the number of the first and second electrodes,

therefore, referring back to fig. 7, for PUSCH-2706 in the above-described embodiment, μ is determined to be μ ═ min (μ ═ min)₀，μ₁，μ₂，μ₄)。

In another embodiment, T_offsetValue of (d) and PUSCH preparation time T as described above_proc，2Accordingly, and μ corresponds to the smallest SCS configuration of the SCS configurations of the PDCCH scheduling overlapping PUSCH transmissions in the MCG, the SCS configurations of the scheduled overlapping PUSCH transmissions in the MCG, the SCS configurations of the PDCCH scheduling SCG PUSCH transmission occasions, and the SCS configurations of the SCG PUSCH transmission occasions.

An uplink transmission opportunity in the SCG on; serving cell

PDCCH of uplink transmission in the scheduling SCG; serving cell set in MCG

Causing at least one DCI to be present on each cell, wherein the at least one DCI schedules uplink transmissions on an MCG cell that overlap in time with an SCG transmission opportunity; serving cell set in MCG

Causing each of the at least one M DCIs to schedule uplink transmissions on a cell of the M MCG cells, wherein the MCG uplink transmissions overlap in time with the SCG transmission occasions.

Is set as a cell

Effective BWP.

Is set as a cell

The effective bandwidth part (BWP). M is set equal to 1, and at the same time M < M,

is set as a cell

Effective BWP of, and

is set as a cell

Effective BWP.

Accordingly, the number of the first and second electrodes,

referring back to fig. 7, according to this embodiment, for PUSCH-2706, μ is determined to be μ ═ min (μ ═ min)₀，μ₁，μ₂，μ₄，μ₃)。

In the above embodiments, the cell

Can be combined with

The same or different. Specifically, the UL cell and the DL cell may be the same or different cells. In addition, the cell

May or may not be the same cell. In particular, the actual number of different ones of these M cells may be less than M. Similarly, a cell

May or may not be identical. In particular, the actual number of different ones of these 2M cells may be less than 2M.

The configured grant transmission on MCG that overlaps with SCG PUSCH transmission occasion can also be used to calculate the total power in SCG.

The set of transmissions on the MCG that overlap with the SCG PUSCH transmission includes both dynamically scheduled transmissions and semi-statically scheduled (configured grant) transmissions. The actual power of all these MCG transmissions is calculated and transferred to the SCG to calculate the power of the SCG transmissions.

Referring now to fig. 8, a diagram illustrates dynamic power sharing with a configured grant transmission, according to an embodiment. PUSCH-1802 on CC-0 of SCG is scheduled by DCI-1 on PDCCH 804 on CC-0. PUSCH-2806 on CC-1 of SCG is scheduled by DCI-2 on PDCCH 808 on CC-0. PUSCH-3810 on CC-2 of MCG is scheduled by DCI-3 on PDCCH 812 on CC-2. PUSCH-4814 on CC-3 of MCG is scheduled by DCI-4 on PDCCH 816 on CC-2. PUSCH-5818 on CC-4 of MCG is scheduled by DCI-5 on PDCCH 820 on CC-4.

PUSCH-2806 and PUSCH-4814 are cross-carrier scheduled. Specifically, PDCCH-2808 and PUSCH-2806 are transmitted on different CCs, and PDCCH-4816 and PUSCH-4814 are transmitted on different CCs.

For PUSCH-2806, from

The power P4, P5, and the power P6 of the configured grant transmission 822 are subtracted.

Referring now to fig. 9, a flow diagram illustrates a method for providing dynamic power sharing at a UE, according to an embodiment. At 902, uplink transmission is configured. For example, DCI may be received on a PDCCH to schedule transmission on a PUSCH. At 904, an offset is determined from a starting symbol of the uplink transmission. In an embodiment, an offset is determined for each CC of the one or more CCs. Each offset is based on a PDCCH decoding time and a PUSCH preparation time on a respective CC. A maximum offset is selected from the determined offsets. In another embodiment, a single offset is determined. As described in more detail above, the single offset is determined based on the smallest SCS selected from the group of SCS.

At 906, based on the offset, a group of overlapping uplink transmissions on the one or more CCs is defined. The group includes scheduled transmissions. At 908, total power is shared among uplink transmissions in the group of overlapping uplink transmissions. In an embodiment, individual powers are allocated to each PUSCH transmission from a total power based on a priority order. When insufficient power remains for a PUSCH transmission, the power for the transmission is reduced or the transmission is dropped. In another embodiment, power is allocated to PUSCH transmissions in MCG and the remaining power is allocated to scheduled transmissions in SCG.

Referring now to fig. 10, a flow diagram illustrates a method for defining a group of overlapping uplink transmissions, according to an embodiment. FIG. 10 is a detailed description of 906 of FIG. 9. At 1002, one or more uplink transmissions on one or more CCs are grouped. The first uplink transmission and the last uplink transmission overlap with at least one other uplink transmission in the group, and the uplink transmission between the first uplink transmission and the last uplink transmission overlaps with at least two other uplink transmissions in the group. At 1004, the uplink transmissions with the corresponding DCI received on the respective PDCCH within an offset from a starting symbol of the scheduled uplink transmission are removed from the group. In an embodiment, the offset may correspond to a CC having each PDCCH. At 1006, a group of overlapping uplink transmissions is defined with remaining uplink transmissions of the group of one or more uplink transmissions.

Referring to fig. 9 and 10, look-ahead may be used to reduce the chance of lowering/reducing the uplink transmission power in the middle of a transmission. This can be used to enhance the system performance and further optimize the power control process in NR.

FIG. 11 is a block diagram illustrating an electronic device in a network environment according to one embodiment. Referring to fig. 11, an electronic device 1101 in a network environment 1100 may communicate with an electronic device 1102 via a first network 1198 (e.g., a short-range wireless communication network) or with an electronic device 1104 or a server 1108 via a second network 1199 (e.g., a long-range wireless communication network). The electronic device 1101 may communicate with the electronic device 1104 via the server 1108. The electronic device 1101 may include a processor 1120, a memory 1130, an input device 1150, a sound output device 1155, a display device 1160, an audio module 1170, a sensor module 1176, an interface 1177, a haptic module 1179, a camera module 1180, a power management module 1188, a battery 1189, a communication module 1190, a Subscriber Identity Module (SIM)1196, or an antenna module 1197. In one embodiment, at least one of the components (e.g., the display device 1160 or the camera module 1180) may be omitted from the electronic device 1101, or one or more other components may be added to the electronic device 1101. Some of the components may be implemented as a single Integrated Circuit (IC). For example, the sensor module 1176 (e.g., a fingerprint sensor, an iris sensor, or an illuminance sensor) may be embedded in the display device 1160 (e.g., a display).

The processor 1120 may run, for example, software (e.g., the program 1140) to control at least one other component (e.g., a hardware component or a software component) of the electronic device 1101 connected to the processor 1120, and may perform various data processing or calculations. As at least part of the data processing or computation, processor 1120 may load commands or data received from another component (e.g., sensor module 1176 or communication module 1190) into volatile memory 1132, process the commands or data stored in volatile memory 1132, and store the resulting data in non-volatile memory 1134. Processor 1120 may include a main processor 1121 (e.g., a Central Processing Unit (CPU) or an Application Processor (AP)) and an auxiliary processor 1123 (e.g., a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a sensor hub processor, or a Communication Processor (CP)) that are operatively separate from or in conjunction with main processor 1121. Additionally or alternatively, secondary processor 1123 may be adapted to consume less power than primary processor 1121 or be adapted to perform a particular function. Secondary processor 1123 may be implemented separate from primary processor 1121 or as part of primary processor 1121.

The auxiliary processor 1123 (but not the main processor 1121) may control at least some of the functions or states associated with at least one of the components of the electronic device 1101 (e.g., the display device 1160, the sensor module 1176, or the communication module 1190) when the main processor 1121 is in an inactive (e.g., sleep) state, or the auxiliary processor 1123 may control at least some of the functions or states associated with at least one of the components of the electronic device 1101 (e.g., the display device 1160, the sensor module 1176, or the communication module 1190) with the main processor 1121 when the main processor 1121 is in an active state (e.g., running an application). The auxiliary processor 1123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., a camera module 1180 or a communication module 1190) that is functionally related to the auxiliary processor 1123.

The memory 1130 may store various data used by at least one component of the electronic device 1101 (e.g., the processor 1120 or the sensor module 1176). The various data may include, for example, software (e.g., program 1140) and input data or output data for commands associated therewith. The memory 1130 may include volatile memory 1132 or nonvolatile memory 1134.

The programs 1140 may be stored as software in the memory 1130, and the programs 1140 may include, for example, an Operating System (OS)1142, middleware 1144, or applications 1146.

The input device 1150 may receive commands or data from outside of the electronic device 1101 (e.g., a user) to be used by other components of the electronic device 1101 (e.g., the processor 1120). The input device 1150 may include, for example, a microphone, a mouse, or a keyboard.

The sound output device 1155 may output a sound signal to the outside of the electronic device 1101. The sound output device 1155 may include, for example, a speaker or a receiver. The speaker may be used for general purposes such as playing multimedia or recording, and the receiver may be used to receive incoming calls. The receiver may be implemented separate from or part of the speaker.

The display device 1160 may visually provide information to an exterior (e.g., a user) of the electronic device 1101. Display device 1160 may include, for example, a display, a holographic device, or a projector, and control circuitry for controlling a respective one of the display, holographic device, and projector. The display device 1160 may include touch circuitry adapted to detect a touch or sensor circuitry (e.g., a pressure sensor) adapted to measure an intensity of a force caused by a touch.

The audio module 1170 may convert sound into electrical signals and vice versa. The audio module 1170 may obtain sound via the input device 1150 or output sound via the sound output device 1155 or headphones of the external electronic device 1102 that are coupled directly (e.g., wired) or wirelessly with the electronic device 1101.

The sensor module 1176 may detect an operating state (e.g., power or temperature) of the electronic device 1101 or an environmental state (e.g., state of a user) external to the electronic device 1101, and then generate an electrical signal or data value corresponding to the detected state. Sensor module 1176 may include, for example, a gesture sensor, a gyroscope sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an Infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 1177 may support one or more specified protocols to be used for directly (e.g., wired) or wirelessly connecting the electronic device 1101 with the external electronic device 1102. Interface 1177 may comprise, for example, a high-definition multimedia interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital (SD) card interface, or an audio interface.

The connection terminal 1178 may include a connector via which the electronic device 1101 may be physically connected with the external electronic device 1102. The connection terminal 1178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

Haptic module 1179 may convert the electrical signal into a mechanical stimulus (e.g., vibration or motion) or electrical stimulus that may be recognized by the user via tactile or kinesthetic senses. Haptic module 1179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

The camera module 1180 may capture still images or moving images. The camera module 1180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

The power management module 1188 may manage power supplied to the electronic device 1101. The power management module 1188 may be implemented as at least a portion of a Power Management Integrated Circuit (PMIC), for example.

The battery 1189 may power at least one component of the electronic device 1101. The battery 1189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

The communication module 1190 may be supported between the electronic device 1101 and the outsideA direct (e.g., wired) communication channel or a wireless communication channel is established between electronic devices (e.g., electronic device 1102, electronic device 1104, or server 1108), and communication is performed via the established communication channel. The communication module 1190 may include one or more communication processors that may operate independently from the processor 1120 (e.g., AP) and support direct (e.g., wired) communication or wireless communication. The communication module 1190 may include a wireless communication module 1192 (e.g., a cellular communication module, a short-range wireless communication module, or a Global Navigation Satellite System (GNSS) communication module) or a wired communication module 1194 (e.g., a Local Area Network (LAN) communication module or a Power Line Communication (PLC) module). A respective one of the communication modules may be via a first network 1198 (e.g., a short-range communication network, such as bluetooth)^TMWireless fidelity (Wi-Fi) direct or infrared data association (IrDA) standards) or a second network 1199 (e.g., a long-range communications network such as a cellular network, the internet, or a computer network (e.g., a LAN or Wide Area Network (WAN))) to communicate with external electronic devices. These various types of communication modules may be implemented as a single component (e.g., a single IC), or may be implemented as multiple components (e.g., multiple ICs) that are separate from one another. The wireless communication module 1192 may identify and authenticate the electronic device 1101 in a communication network, such as the first network 1198 or the second network 1199, using subscriber information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the subscriber identity module 1196.

The antenna module 1197 may transmit signals or power to or receive signals or power from outside of the electronic device 1101 (e.g., an external electronic device). The antenna module 1197 may include one or more antennas and, thus, at least one antenna suitable for a communication scheme used in a communication network, such as the first network 1198 or the second network 1199, may be selected from the one or more antennas by, for example, the communication module 1190 (e.g., the wireless communication module 1192). Signals or power may then be transmitted or received between the communication module 1190 and the external electronic device via the selected at least one antenna.

At least some of the above components may be interconnected and communicate signals (e.g., commands or data) communicatively between them via an inter-peripheral communication scheme (e.g., bus, General Purpose Input Output (GPIO), Serial Peripheral Interface (SPI), or Mobile Industry Processor Interface (MIPI)).

Commands or data may be sent or received between the electronic device 1101 and the external electronic device 1104 via the server 1108 connected to the second network 1199. Each of the electronic device 1102 and the electronic device 1104 may be the same type of device as the electronic device 1101 or a different type of device from the electronic device 1101. All or some of the operations to be performed at the electronic device 1101 may be performed at one or more of the external

electronic devices

1102, 1104 or the server 1108. For example, if the electronic device 1101 should automatically perform a function or service or should perform a function or service in response to a request from a user or another device, the electronic device 1101 may request the one or more external electronic devices to perform at least part of the function or service instead of or in addition to performing the function or service. The one or more external electronic devices that received the request may perform the requested at least part of the functions or services or perform another function or another service related to the request and transmit the result of the execution to the electronic device 1101. The electronic device 1101 may provide the result as at least a partial reply to the request with or without further processing of the result. To this end, for example, cloud computing technology, distributed computing technology, or client-server computing technology may be used.

One embodiment may be implemented as software (e.g., program 1140) comprising one or more instructions stored in a storage medium (e.g., internal memory 1136 or external memory 1138) that are readable by a machine (e.g., electronic device 1101). For example, under control of the processor, the processor of the electronic device 1101 may invoke and execute at least one of the one or more instructions stored in the storage medium with or without the use of one or more other components. Accordingly, the machine is operable to perform at least one function in accordance with the invoked at least one instruction. The one or more instructions may include code generated by a compiler or code capable of being executed by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. The term "non-transitory" indicates that the storage medium is a tangible device and does not include a signal (e.g., an electromagnetic wave), but the term does not distinguish between data being stored semi-permanently in the storage medium and data being stored temporarily in the storage medium.

According to one embodiment, the method of the present disclosure may be included and provided in a computer program product. The computer program product may be used as a product for conducting a transaction between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed via an application Store (e.g., Play Store)^TM) The computer program product is published (e.g. downloaded or uploaded) online, or may be distributed (e.g. downloaded or uploaded) directly between two user devices (e.g. smartphones). At least part of the computer program product may be temporarily generated if it is published online, or at least part of the computer program product may be at least temporarily stored in a machine readable storage medium, such as a memory of a manufacturer's server, a server of an application store, or a forwarding server.

According to one embodiment, each of the above components (e.g., modules or programs) may comprise a single entity or multiple entities. One or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as the corresponding one of the plurality of components performed the one or more functions prior to integration. Operations performed by a module, program, or another component may be performed sequentially, in parallel, repeatedly, or in a heuristic manner, or one or more of the operations may be performed in a different order or omitted, or one or more other operations may be added.

While specific embodiments of the present disclosure have been described in the detailed description thereof, the present disclosure may be modified in various forms without departing from the scope of the present disclosure. Accordingly, the scope of the present disclosure should be determined not only based on the described embodiments, but also based on the appended claims and their equivalents.

Claims

1. A method for providing dynamic power sharing on a user equipment, UE, the method comprising:

configuring a first uplink transmission;

determining an offset from a starting symbol of a first uplink transmission;

based on the offset, defining a group of overlapping uplink transmissions on one or more Component Carriers (CCs), wherein the group of overlapping uplink transmissions comprises at least a first uplink transmission; and is

Sharing total power between uplink transmissions in the group of overlapping uplink transmissions.

2. The method of claim 1, wherein determining the offset comprises:

determining one or more offsets, wherein each offset of the one or more offsets is determined for a respective CC of the one or more CCs; and is

Defining the offset as a maximum offset of the one or more offsets.

3. The method of claim 2, wherein each of the one or more offsets is based on a Physical Downlink Control Channel (PDCCH) decoding time and a Physical Uplink Shared Channel (PUSCH) preparation time of the respective CC.

4. The method of claim 2, wherein the step of sharing the total power comprises:

determining a priority order of uplink transmissions in the group of overlapping uplink transmissions;

allocating individual powers from the total power to each uplink transmission in the group of overlapping uplink transmissions in the priority order;

curtailing power for a given uplink transmission in the group of overlapping uplink transmissions based on the total power remaining when the total power remaining is insufficient for the given uplink transmission; and is

Dropping the given uplink transmission when the power for the given uplink transmission is reduced to zero.

5. The method of claim 2, wherein the step of sharing the total power comprises:

determining whether the first uplink transmission overlaps in time with a previous group of overlapping uplink transmissions; and is

When a first uplink transmission overlaps with the previous group of overlapping uplink transmissions, reducing the total power by the amount of power allocated to the previous group in the overlapping time region.

6. The method of claim 1, wherein a first uplink transmission is on a CC of a secondary cell group SCG, and other uplink transmissions in the group of overlapping uplink transmissions other than the first uplink transmission are each on a CC of a master cell group MCG.

7. The method of claim 6, wherein determining the offset comprises: determining the offset as a PUSCH preparation time based on a subcarrier spacing SCS.

8. The method of claim 7, wherein the SCS is at least the smallest of the following SCS: the SCS of the first PDCCH that schedules the first uplink transmission, the SCS of the first uplink transmission, and the SCS of the PDCCH that schedules uplink transmissions on the MCG that overlap with the first uplink transmission.

9. The method of claim 8, wherein the SCS is also the smallest SCS in SCS of uplink transmissions on the MCG that overlap with the first uplink transmission.

10. The method of claim 2 or 7, wherein the step of defining the group of overlapping uplink transmissions comprises:

grouping one or more uplink transmissions on the one or more CCs, wherein a first and a last of the one or more uplink transmissions overlap with at least one other of the one or more uplink transmissions, and each uplink transmission between the first and the last of the one or more uplink transmissions overlaps with at least two other of the one or more uplink transmissions, wherein the first uplink transmission has an earliest starting symbol and the last uplink transmission has a last ending symbol;

removing uplink transmissions from the set of one or more uplink transmissions having a respective DCI received on each PDCCH within the offset from a starting symbol of a first uplink transmission; and is

Defining the group of overlapping uplink transmissions with remaining ones of the one or more uplink transmissions in the group other than the removed uplink transmission.

11. The method of claim 6, wherein the step of sharing total power between uplink transmissions in the group of overlapping uplink transmissions comprises:

determining a power used by each of the other uplink transmissions in the set of overlapping uplink transmissions; and is

Allocating remaining power to the first uplink transmission from the total power.

12. The method of claim 11, wherein the step of sharing the total power further comprises:

determining whether a configured grant transmission in the MCG overlaps with the first uplink transmission; and is

Allocating power from the total power to a configured grant transmission before allocating the remaining power to a first uplink transmission.

13. A user equipment, UE, comprising:

a processor; and

a non-transitory computer-readable storage medium storing instructions that, when executed, cause a processor to:

configuring a first uplink transmission;

determining an offset from a starting symbol of a first uplink transmission;

14. The UE of claim 13, wherein in determining the offset, the instructions further cause the processor to:

Defining the offset as a maximum offset of the one or more offsets.

15. The UE of claim 14, wherein the instructions, when sharing the total power, further cause the processor to:

16. The UE of claim 13, wherein a first uplink transmission is on a CC of a secondary cell group SCG, and other uplink transmissions in the group of overlapping uplink transmissions other than the first uplink transmission are each on a CC of a master cell group MCG.

17. The UE of claim 16, wherein in determining the offset, the instructions further cause the processor to:

determining the offset as a physical uplink shared channel, PUSCH, preparation time based on a subcarrier spacing, SCS.

18. The UE of claim 17, wherein the SCS is a smallest SCS of at least the following SCS: the SCS of the first physical downlink control channel PDCCH that schedules the first uplink transmission, the SCS of the first uplink transmission, and the SCS of the PDCCH that schedules uplink transmissions on the MCG that overlap with the first uplink transmission.

19. The UE of claim 18, wherein the SCS is also the smallest SCS in SCS of uplink transmissions on the MCG that overlap with the first uplink transmission.

20. The UE of claim 14 or 17, wherein in defining the group of overlapping uplink transmissions, the instructions further cause the processor to:

21. The UE of claim 16, wherein, in sharing total power between uplink transmissions in the group of overlapping uplink transmissions, the instructions further cause the processor to: