CN109286949B

CN109286949B - Power headroom calculation method, terminal and computer readable storage medium

Info

Publication number: CN109286949B
Application number: CN201710601879.9A
Authority: CN
Inventors: 潘学明; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-07-21
Filing date: 2017-07-21
Publication date: 2021-01-08
Anticipated expiration: 2037-07-21
Also published as: CN109286949A; WO2019015469A1

Abstract

The invention discloses a power headroom calculation method, a terminal and a computer readable storage medium, wherein the method comprises the following steps: acquiring a first waveform type actually used by physical uplink channel transmission; according to the first waveform type, an actual power headroom of the terminal based on the first waveform type and/or a virtual power headroom of the terminal based on a second waveform type that is not actually used are calculated. The terminal obtains the first waveform type used by the transmission of the physical uplink channel, calculates the actual power margin of the terminal based on the first waveform type and/or the virtual power margin of the terminal based on the second waveform type according to the first waveform type to obtain a more accurate power margin report, and reports the power margin report to the network equipment, so that the network equipment can perform resource scheduling according to the more accurate power margin report.

Description

Power headroom calculation method, terminal and computer readable storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a power headroom calculation method, a terminal, and a computer-readable storage medium.

Background

In a Long Term Evolution (LTE) system, data of a data Channel and data of a Control Channel cannot be simultaneously transmitted in the same subframe, for example, data of a Physical Uplink Shared Channel (PUSCH) and data of a Physical Uplink Control Channel (PUCCH) cannot be simultaneously transmitted in the same subframe. A terminal (UE) reports a Power Headroom (PH) report of a PUSCH to a base station, when the base station receives the Power Headroom report sent by the UE in a subframe, the base station may obtain a Power Headroom of the UE when the PUSCH sends data according to a Power Headroom value included in the Power Headroom report, and when the base station subsequently schedules a radio resource, the base station needs to refer to the Power Headroom value to prevent the UE from entering a Power limited state when the PUSCH sends data due to scheduling of an excessive resource to the UE.

In the conventional LTE system, Power Headroom Report (PHR) in the LTE system is further divided into a first type PHR (type 1) and a second type PHR (type 2), which respectively address a PUSCH (PUSCH only) transmission case and a PUSCH and PUCCH simultaneous transmission case. Uplink transmission only supports the use of a Single-carrier Frequency Division Multiple Access (SC-FDMA) waveform, and uplink power control adopts an open-loop and closed-loop combined mode.

In a fifth Generation (5G, 5Generation) communication system, or referred to as a New Radio (NR) system, the PUSCH supports two waveforms, i.e., OFDMA (Orthogonal Frequency Division Multiple Access) and SC-FDMA. In the prior art, when a single waveform is used for PHR calculation and feedback, power headroom calculation under a mixed use scene of two waveforms cannot be accurately reflected, and the scheduling requirement of mixed use of the two waveforms cannot be met.

Disclosure of Invention

Embodiments of the present invention provide a power headroom calculation method, a terminal, and a computer readable storage medium, so as to solve a problem that a power headroom calculation manner in the prior art cannot accurately reflect an uplink power headroom in an NR system, so that a scheduling requirement of a network device cannot be met.

In a first aspect, an embodiment of the present invention provides a power headroom calculation method, applied to a terminal side, including:

acquiring a first waveform type actually used by physical uplink channel transmission;

according to the first waveform type, calculating the actual power margin of the terminal based on the first waveform type and/or the virtual power margin of the terminal based on the second waveform type which is not actually used;

the first waveform type is one of at least two transmission waveforms supported by the terminal, and the second waveform type is the other one of the at least two transmission waveforms supported by the terminal except the first waveform type.

In a second aspect, an embodiment of the present invention further provides a terminal, including:

the first acquisition module is used for acquiring a first waveform type actually used by physical uplink channel transmission;

the first calculation module is used for calculating the actual power margin of the terminal based on the first waveform type and/or the virtual power margin of the terminal based on the second waveform type which is not actually used according to the first waveform type;

In a third aspect, an embodiment of the present invention provides a terminal, which includes a processor, a memory, and a computer program stored in the memory and operable on the processor, where the processor executes the computer program to implement the steps of the power headroom calculation method described above.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the power headroom calculation method described above.

In this way, the terminal of the embodiment of the present invention obtains the more accurate power headroom report by obtaining the first waveform type used for the transmission of the physical uplink channel, and calculating the actual power headroom of the terminal based on the first waveform type and/or the virtual power headroom of the terminal based on the second waveform type according to the first waveform type, and reports the power headroom report to the network device, so that the network device can perform resource scheduling according to the more accurate power headroom report.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a flow chart illustrating a power headroom calculation method according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a terminal according to an embodiment of the present invention;

fig. 3 shows a block diagram of a terminal according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The power headroom calculation method of the embodiment of the present invention is applied to a terminal side, and specifically includes the following steps, as shown in fig. 1:

step 11: a first waveform type actually used for physical uplink channel transmission is obtained.

Specifically, step 11 includes: the method comprises the steps of obtaining a first waveform type actually used by physical uplink channel transmission in a time domain transmission unit of a service cell to which a terminal belongs. The time domain transmission unit is a subframe, a slot (slot), a mini slot (mini slot), or a time domain transmission symbol (OFDM symbol).

A terminal may be a wireless terminal or a wired terminal, and a wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.

Step 12: according to the first waveform type, an actual power headroom of the terminal based on the first waveform type and/or a virtual power headroom of the terminal based on a second waveform type that is not actually used are calculated.

The first waveform type is one of at least two transmission waveforms supported by the terminal, and the second waveform type is the other one of the at least two transmission waveforms supported by the terminal except the first waveform type. For example: the at least two transmission waveforms supported by the terminal include: a single carrier frequency division multiple access, SC-FDMA, waveform and an orthogonal frequency division multiple access, OFDMA, waveform, the first waveform type being one of an SC-FDMA waveform and an OFDMA waveform, the second waveform type being the other of an SC-FDMA waveform and an OFDMA waveform.

In the power headroom calculation method of the embodiment of the present invention, the terminal obtains the first waveform type actually used for transmission of the physical uplink channel, calculates the actual power headroom of the terminal based on the first waveform type according to the first waveform type, and/or calculates the virtual power headroom of the terminal based on the second waveform type that is not actually used, so as to obtain a more accurate power headroom report, and reports the power headroom report to the network device, so that the network device can perform resource scheduling according to the more accurate power headroom report.

The power headroom calculation method according to the embodiment of the present invention will be further described below with reference to different application scenarios.

In an LTE system, a terminal transmits PUSCH by using an SC-FDMA waveform, and the transmission power P of the terminal in a time domain transmission unit i (such as a subframe i) of a serving cell (serving cell) c_pUSCH,c(i) Can be calculated by the following formula (one):

wherein, P_PUSCH,c(i) Represents the transmission power of the terminal in one time domain transmission unit i (e.g. subframe i) of the serving cell c; p_cmax,c(i) Represents the maximum transmission power of the terminal in the subframe i of the serving cell c; m_PUSCH,c(i) Representing the number of frequency domain resources corresponding to the PUSCH sent by the terminal in the subframe i of the serving cell c, and taking RB as a unit; p_{O_PUSCH,c}(j) Indicating an open-loop power target value of a PUSCH transmitted by a terminal in a subframe i of a serving cell c, where j is 0, 1 or 2, j indicates a PUSCH transmission type, j is 0 indicates a semi-persistent scheduled PUSCH transmission, j is 1 indicates a dynamically scheduled PUSCH transmission, and j is 2 indicates a PUSCH transmission carrying a random access message three (message 3); alpha is alpha_c(j) Path loss compensation factor on serving cell c for PUSCH representing different transmission types, α being 0 or 1 for j_cE {0,0.4,0.5,0.6,0.7,0.8,0.9,1} for j ═ 2, α_c＝1；PL_cRepresenting a measured value of the path loss, Δ, on the serving cell c_TF,c(i) Indicates the power adjustment amount, f, associated with the PUSCH_c(i) Represents the cumulative value of the closed loop power control commands in time domain transmission unit i of the serving cell c. It is worth pointing out that the calculation unit of the above formula is dBm.

In the LTE system, the terminal needs to report a power headroom report, so that the network device can better schedule the subsequent PUSCH transmission. For PUSCH (PUSCH only) transmission scenarios and PUSCH and PUCCH simultaneous transmission scenarios, Power Headroom Reporting (PHR) in an LTE system is further divided into a first type of power headroom reporting (type1PHR) and a second type of power headroom reporting (type2 PHR).

Specifically, the following calculation scenarios are classified for type1 PHR:

scenario one, if only PUSCH is transmitted in subframe i of service c, then type1PHR is calculated according to the following formula (two):

wherein, the calculation unit of the above formula is dB, the meaning of each parameter and the above transmitting power P_PUSCH,c(i) The calculation formulas are the same, and therefore are not described herein.

Scenario two, if PUSCH and PUCCH are simultaneously transmitted in subframe i of serving cell c, then type1PHR is calculated according to the following formula (three):

wherein,

the maximum transmission power when the terminal is assumed to transmit only the PUSCH in the time domain transmission unit i of the serving cell c is shown, and the maximum transmission power is calculated for transmitting only the PUSCH in the subframe i on the assumption, and the remaining parameters are the same as in the aforementioned power control formula.

Scenario three, if only PUCCH is transmitted for subframe i of serving cell c, since PUSCH is not transmitted, what is actually calculated is virtual (virtual) PHR of PUSCH. Then type1PHR is calculated according to the following equation (four):

wherein

According to the assumption that MPR is 0dB, A-MPR is 0dB, P-MPR is 0dB, T_CThe calculation is made 0dB, with the remaining parameters being the same as above.

The above describes the calculation method of type1PHR in different scenarios, and the following embodiment further describes the calculation method of type2PHR in different scenarios.

In a fourth scenario, if the terminal simultaneously transmits the PUSCH and the PUCCH in the subframe i of the serving cell c, at this time, the Type2PHR is calculated according to the following formula (five):

the calculation unit of the above formula is dB, the expression in the parentheses is the sum of two parts, the first part is the actual transmission power of the PUSCH in the subframe i on the serving cell c, and the second part is the actual transmission power of the PUCCH on the same carrier and subframe.

In a fifth scenario, if the terminal transmits only the PUSCH in the subframe i of the serving cell c and does not transmit the PUCCH, then the type2PHR is calculated according to the following formula (six):

the calculation unit of the formula is dB, the expression in the parentheses is the sum of two parts, the first part is the actual transmission power of the PUSCH in the subframe i on the serving cell c, and the second part is the virtual transmission power of the PUCCH on the same carrier and subframe.

Scene six, if the UE transmits only the PUCCH in the subframe i on the serving cell c and does not transmit the PUSCH, then the type2PHR is calculated according to the following formula (seven):

the calculation unit of the formula is dB, the expression in the parentheses is the sum of two parts, the first part is the virtual transmission power of the PUSCH in the subframe i on the serving cell c, and the second part is the actual transmission power of the PUSCH on the same carrier and subframe.

In a seventh scenario, if the terminal does not transmit either the PUSCH or the PUCCH in the subframe i of the serving cell c, then the type2PHR is calculated according to the following formula (eight):

the calculation unit of the formula is dB, the expression in brackets is divided into the sum of two parts, the first part is the virtual transmission power of the PUSCH in the subframe i on the serving cell c, and the second part is the virtual transmission power of the PUSCH on the same carrier and subframe.

In the above, the calculation methods of the PHR in various scenarios where the PUSCH and/or PUCCH is transmitted by using a single waveform type in the LTE system are introduced, and in the following embodiment, the calculation methods of the PHR when the PUSCH and/or PUCCH can be transmitted by using different waveform types in the NR system are introduced with a specific formula.

Specifically, step 12 specifically includes: an actual power headroom of the terminal based on the first waveform type is calculated according to the first waveform type, and/or a virtual power headroom of the terminal based on the second waveform type is calculated according to the first waveform type.

Specifically, when the first waveform type is an SC-FDMA waveform and the second waveform type is an OFDMA waveform, step 12 specifically includes: according to the SC-FDMA waveform actually used, calculating the actual power margin of the terminal based on the SC-FDMA waveform; and/or, calculating a virtual power headroom of the terminal based on the non-actually used OFDMA waveform according to the actually used SC-FDMA waveform. When the first waveform type is an OFDMA waveform and the second waveform type is an SC-FDMA waveform, step 12 specifically includes: calculating the actual power margin of the terminal based on the OFDMA waveform according to the OFDMA waveform actually used; and/or, calculating a virtual power headroom of the terminal based on the non-actually used SC-FDMA waveform according to the actually used OFDMA waveform.

The method comprises the steps that a physical uplink channel comprises a PUSCH and a PUCCH, and according to a first waveform type, the actual power headroom of a terminal based on the first waveform type is calculated, namely, the terminal calculates the actual PHR of a time domain transmission unit i (such as a subframe i/slot i) of the subframe i/slot i according to the waveform type actually used by PUSCH transmission on the subframe i/slot i in a service cell c. For example, if the PUSCH transmission waveform of the terminal on the subframe i is SC-FDMA, the maximum transmission power P of the terminal transmitted by the SC-FDMA waveform in the subframe i is obtained according to the SC-FDMA waveform_{cmax_S,c}(i) And the terminal transmits PUSCH transmission power P in the subframe i through SC-FDMA waveform_{PUSCH_S,c}(i) Thereby obtaining the power headroom PH of the terminal based on SC-FDMA waveform transmission_S,c(i)。

Specifically, taking type1 as an example, when the physical uplink channel is a physical uplink shared channel PUSCH, the step of calculating the actual power headroom of the terminal based on the SC-FDMA waveform according to the actually used SC-FDMA waveform includes:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of the serving cell c to which the terminal belongs, the actual power headroom PH of the terminal based on the actually used SC-FDMA waveform is calculated by the following formula (nine)_{type1_S,c}(i)；

Wherein the pH is_{type1_S,c}(i) The actual power margin of the terminal is shown when the terminal actually uses the SC-FDMA waveform to transmit the PUSCH; p_{cmax_S,c}(i) Represents the maximum transmission power of the terminal in the time domain transmission unit i of the serving cell c; m_{PUSCH_S,c}(i) The frequency domain resource number of the PUSCH is transmitted by the SC-FDMA waveform actually used by the terminal in a time domain transmission unit i of the serving cell c; p_{O_PUSCH_S,c}(j) Indicating that the terminal actually uses the SC-FDMA waveform to transmit the open-loop power target value of the PUSCH in a time domain transmission unit i of a serving cell c, wherein j represents the transmission type of the PUSCH, and j is 0, 1 or 2; alpha is alpha_S,c(j) Pathloss compensation factor on serving cell c for PUSCHs representing different transmission typesA seed; PL_cRepresents a path loss measurement on serving cell c; delta_{TF_S,c}(i) Represents a power adjustment amount related to the PUSCH; f. of_S,c(i) Represents the cumulative value of the closed loop power control commands in time domain transmission unit i of the serving cell c.

For another example, if the PUSCH transmission waveform of the terminal on the subframe i is OFDMA, the maximum transmission power P of the terminal transmitted by the OFDMA waveform in the subframe i is obtained according to the OFDMA waveform_{cmax_O,c}(i) And transmitting power P of PUSCH transmitted by the terminal through OFDMA waveform in the subframe i_{PUSCH_O,c}(i) Thereby obtaining the power headroom PH of the terminal based on OFDMA waveform transmission_O,c(i)。

Specifically, taking type1 as an example, when the physical uplink channel is a physical uplink shared channel PUSCH, the step of calculating, according to an actually used OFDMA waveform, an actual power headroom of the terminal based on the OFDMA waveform includes:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of the serving cell c to which the terminal belongs, an actual power headroom PH of the terminal based on an actually used OFDMA waveform is calculated by the following formula (ten)_{type1_O,c}(i)；

Wherein the pH is_{type1_O,c}(i) Representing the actual power headroom of the terminal when the terminal actually uses the OFDMA waveform to transmit the PUSCH; p_{cmax_O,c}(i) Represents the maximum transmission power of the terminal in the time domain transmission unit i of the serving cell c; m_{PUSCH_O,c}(i) Representing the number of frequency domain resources of the terminal for actually using OFDMA to transmit PUSCH in the time domain transmission unit i of the service cell c; p_{O_PUSCH_O,c}(j) Indicating that the terminal adopts OFDMA to transmit an open-loop power target value of a PUSCH in a time domain transmission unit i of a serving cell c, j indicates the transmission type of the PUSCH, and j is 0, 1 or 2; alpha is alpha_O,c(j) A path loss compensation factor on a serving cell c representing PUSCHs of different transmission types; PL_cRepresents a path loss measurement on serving cell c; delta_{TF_O,c}(i) Represents a power adjustment amount related to the PUSCH; f. of_O,c(i) Represents the cumulative value of the closed loop power control commands in time domain transmission unit i of the serving cell c.

Similarly, the terminal calculates an actual PHR of a time domain transmission unit i (e.g., a subframe i/slot i) of a serving cell c for the waveform type actually used by PUCCH transmission according to the waveform type. For example, if the PUSCH transmission waveform of the terminal on the subframe i is SC-FDMA, the maximum transmission power P of the terminal transmitted by the SC-FDMA waveform in the subframe i is obtained according to the SC-FDMA waveform_{cmax_S,c}(i) And transmitting power P of PUCCH by the terminal through SC-FDMA waveform in the subframe i_{PUCCH_S,c}(i) Thereby obtaining the power headroom PH of the terminal based on SC-FDMA waveform transmission_S,c(i) In that respect For another example, if the PUCCH transmission waveform of the terminal on the subframe i is OFDMA, the maximum transmission power P of the terminal transmitted by the OFDMA waveform in the subframe i is obtained according to the OFDMA waveform_{cmax_O,c}(i) And transmitting power P of PUCCH by the terminal through OFDMA waveform in the subframe i_{PUCCH_O,c}(i) Thereby obtaining the power headroom PH of the terminal based on OFDMA waveform transmission_O,c(i) In that respect It is worth pointing out that the power headroom calculation method for PUCCH and the above mentioned power headroom calculation method for PUSCH are of different types, and therefore are not described herein again.

On the other hand, according to the first waveform type, the step of calculating the virtual power headroom of the terminal based on the second waveform type not actually used is that the terminal calculates the virtual PHR of one subframe i/slot i in one serving cell c for the waveform according to the waveform not actually used by PUSCH transmission on the subframe i/slot i. For example, the PUSCH transmission waveform of the terminal on the subframe i is an SC-FDMA waveform, and the terminal obtains the maximum virtual transmission power P transmitted by the terminal through the OFDMA waveform in the subframe i according to another waveform OFDMA waveform_{cmax_O,c}(i) And the virtual transmission power P of the terminal for transmitting PUSCH by OFDMA waveform in the subframe i_{PUSCH_O,c}(i) Thereby obtaining the virtual power headroom PH of the terminal based on OFDMA waveform transmission_O,c(i)。

Specifically, taking type1 as an example, when the physical uplink channel is a physical uplink shared channel PUSCH, the step of calculating the virtual power headroom of the terminal based on the non-actually used OFDMA waveform according to the actually used SC-FDMA waveform includes:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of the serving cell c to which the terminal belongs, a virtual power headroom PH of the terminal based on the actually-unused OFDMA waveform is calculated by the following formula (eleven)_{type1_O,c}(i)；

Wherein the pH is_{type1_O,c}(i) The virtual power headroom of the PUSCH is transmitted by the terminal through the OFDMA waveform which is not actually used when the terminal actually uses the SC-FDMA waveform to transmit the PUSCH;

represents the maximum transmission power when the terminal is assumed to transmit PUSCH by an OFDMA waveform that is not actually used within the time domain transmission unit i of the serving cell c; p_{O_PUSCH_O,c}(1) Represents an open loop power target value when the terminal transmits the dynamically scheduled PUSCH by the non-actually used OFDMA waveform within the time domain transmission unit i of the serving cell c; alpha is alpha_O,c(1) A path loss compensation factor representing a dynamically scheduled PUSCH on serving cell c; f. of_O,c(i) Represents the cumulative value of the closed loop power control commands in time domain transmission unit i of the serving cell c.

For another example, the terminal sends the PUSCH waveform on the subframe i as the OFDMA waveform, and the terminal obtains the maximum virtual transmission power P transmitted by the terminal through the SC-FDMA waveform in the subframe i according to another waveform SC-FDMA waveform_{cmax_S,c}(i) And the terminal transmits the virtual transmission power P of the PUSCH in the subframe i through the SC-FDMA waveform_{PUSCH_S,c}(i) Thereby obtaining the virtual power headroom PH of the terminal based on SC-FDMA waveform transmission_S,c(i)。

Specifically, taking type1 as an example, when the physical uplink channel is a physical uplink shared channel PUSCH, the step of calculating the virtual power headroom of the terminal based on the non-actually used SC-FDMA waveform according to the actually used OFDMA waveform includes:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of the serving cell c to which the terminal belongs, the virtual power headroom PH of the terminal based on the non-actually used SC-FDMA waveform is calculated by the following formula (twelve)_{type1_S,c}(i)；

Wherein the pH is_{type1_S,c}(i) The virtual power headroom of the PUSCH is transmitted by the terminal through the SC-FDMA waveform which is not actually used when the terminal actually uses the OFDMA waveform to transmit the PUSCH;

represents the maximum transmission power when the terminal is assumed to transmit PUSCH by a non-actually used SC-FDMA waveform within the time domain transmission unit i of the serving cell c; p_{O_PUSCH_S,c}(1) Represents an open loop power target value when the terminal transmits the dynamically scheduled PUSCH by a non-actually used SC-FDMA waveform within the time domain transmission unit i of the serving cell c; alpha is alpha_S,c(1) A path loss compensation factor representing a dynamically scheduled PUSCH on serving cell c; f. of_S,c(i) Represents the cumulative value of the closed loop power control commands in time domain transmission unit i of the serving cell c.

Similarly, the terminal calculates a virtual PHR of a time domain transmission unit i (e.g., a subframe i/slot i) of a serving cell c for a waveform type that is not actually used by PUCCH for transmission. For example, the PUSCH transmission waveform of the terminal on the subframe i is an SC-FDMA waveform, and the terminal obtains the maximum virtual transmission power P transmitted by the terminal through the OFDMA waveform in the subframe i according to another waveform OFDMA waveform_{cmax_O,c}(i) And the terminal transmits the virtual transmission power P of the PUCCH in the subframe i through the OFDMA waveform_{PUCCH_O,c}(i) Thereby obtaining the virtual power headroom PH of the terminal based on OFDMA waveform transmission_O,c(i) In that respect For another example, the terminal sends the waveform of PUCCH in the subframe i as OFDMA waveform, and the terminal obtains the maximum virtual transmission power P transmitted by the terminal in the subframe i through SC-FDMA waveform according to another waveform SC-FDMA waveform_{cmax_S,c}(i) And the terminal transmits the virtual transmission power P of the PUCCH in the subframe i through the SC-FDMA waveform_{PUCCH_S,c}(i) Thereby obtaining the virtual power headroom PH of the terminal based on SC-FDMA waveform transmission_S,c(i) In that respect It is worth pointing out that the virtual power headroom calculation method for PUCCH and the above virtual power headroom calculation method for PUSCH are of different types, and therefore are not described herein again.

Further, after step 12, the power headroom calculation method according to the embodiment of the present invention further includes: and generating a power headroom report according to the actual power headroom based on the first waveform type and/or the virtual power headroom based on the second waveform type which is not actually used, and reporting the power headroom report to the network equipment. Wherein the actual power headroom based on the first waveform type comprises: an actual power headroom based on an SC-FDMA waveform and/or an actual power headroom based on an OFDMA waveform. The virtual power headroom based on the second waveform type includes: a virtual power headroom based on an SC-FDMA waveform and/or a virtual power headroom based on an OFDMA waveform. And the terminal reports the accurate power headroom report to the network equipment, so that the network equipment can carry out resource scheduling according to the more accurate power headroom report.

The network device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, a Base Station in a future 5G network, or the like, which is not limited herein.

Further, when there is no corresponding physical uplink channel transmission in one time domain transmission unit i for the serving cell c, here, the no corresponding physical uplink channel transmission includes: the method comprises the following steps of not having any physical uplink channel transmission scene and not having the specified type of physical uplink channel transmission. Before the step of reporting the generated power headroom report to the network device, the power headroom calculation method of the present invention further includes: acquiring a second waveform type which is not actually used in physical uplink channel transmission; and according to the second waveform type, calculating the virtual power margin of the terminal based on the second waveform type.

Taking calculation of the power headroom of the terminal PUSCH as an example, only PUCCH scene is transmitted in one time domain transmission unit i for the serving cell c. When the second waveform type is an SC-FDMA waveform, according to the second waveform type, the step of calculating the virtual power headroom of the terminal based on the second waveform type specifically includes: and calculating the virtual power margin of the terminal based on the SC-FDMA waveform according to the SC-FDMA waveform which is not actually used.

Specifically, taking type1 as an example, when only PUCCH is transmitted in one time domain transmission unit i of the serving cell c, the step of calculating the virtual power headroom of the terminal based on the SC-FDMA waveform according to the SC-FDMA waveform that is not actually used includes:

calculating a virtual power headroom PH of the terminal based on the SC-FDMA waveform not actually used by the following formula (thirteen)_{type1_S,c}(i)；

Wherein the pH is_{type1_S,c}(i) When only PUCCH is transmitted in one time domain transmission unit i of a serving cell c which represents the terminal, the terminal transmits the virtual power headroom of the PUSCH through the SC-FDMA waveform which is not actually used;

Or, when the second waveform type is an OFDMA waveform, the step of calculating, according to the second waveform type, a virtual power headroom of the terminal based on the second waveform type specifically includes: from the non-actually used OFDMA waveform, a virtual power headroom of the terminal based on the OFDMA waveform is calculated.

Specifically, taking type1 as an example, when only PUCCH is transmitted in one time domain transmission unit i of the serving cell c, the step of calculating the virtual power headroom of the terminal based on the OFDMA waveform according to the OFDMA waveform that is not actually used includes:

calculating a virtual power headroom PH of the terminal based on the OFDMA waveform not actually used by the following formula (fourteen)_{type1_O,c}(i)；

Wherein the pH is_{type1_O,c}(i) When only PUCCH is transmitted in one time domain transmission unit i of a service cell c which represents the terminal, the terminal transmits the virtual power margin of the PUSCH through the practically unused OFDMA waveform;

Similarly, when calculating the power headroom of the terminal PUCCH, the method for calculating the power headroom of the PUSCH may also be implemented with reference to the above-mentioned manner for a case where there is no PUCCH transmission scenario in one time domain transmission unit i of the serving cell c, or only a PUSCH transmission scenario is transmitted in one time domain transmission unit i of the serving cell c, and therefore, the description is omitted here.

The terminal obtains the first waveform type used by the transmission of the physical uplink channel, calculates the actual power margin of the terminal based on the first waveform type and/or the virtual power margin of the terminal based on the second waveform type according to the first waveform type to obtain a more accurate power margin report, and reports the power margin report to the network equipment, so that the network equipment can perform resource scheduling according to the more accurate power margin report.

The foregoing embodiments describe the power headroom calculation method in different scenarios, and the following describes a terminal corresponding to the power headroom calculation method with reference to the accompanying drawings.

As shown in fig. 2, the terminal 200 according to the embodiment of the present invention can obtain a first waveform type actually used for physical uplink channel transmission in the foregoing embodiment; according to the first waveform type, the details of the method for calculating the actual power headroom of the terminal based on the first waveform type and/or the virtual power headroom of the terminal based on the second waveform type which is not actually used are calculated, and the same effect is achieved, and the terminal 200 specifically comprises the following functional modules:

a first obtaining module 210, configured to obtain a first waveform type actually used for physical uplink channel transmission;

a first calculating module 220, configured to calculate, according to the first waveform type, an actual power headroom of the terminal based on the first waveform type and/or a virtual power headroom of the terminal based on a second waveform type that is not actually used;

Wherein, the first obtaining module 210 includes:

an obtaining unit, configured to obtain a first waveform type actually used for physical uplink channel transmission in a time domain transmission unit of a serving cell to which a terminal belongs;

the time domain transmission unit is a subframe, a time slot, a micro-slot or a time domain transmission symbol.

The at least two transmission waveforms supported by the terminal include: single carrier frequency division multiple access SC-FDMA waveforms and orthogonal frequency division multiple access OFDMA waveforms.

Wherein, the first calculating module 220 comprises:

a first calculation unit for calculating an actual power margin based on the SC-FDMA waveform of the terminal according to the SC-FDMA waveform actually used when the first waveform type is the SC-FDMA waveform and the second waveform type is the OFDMA waveform; and/or the presence of a gas in the gas,

and a second calculation unit for calculating a virtual power headroom of the terminal based on the non-actually used OFDMA waveform according to the actually used SC-FDMA waveform.

Wherein the first computing unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, calculating an actual Power Headroom (PH) of the terminal based on an actually used SC-FDMA waveform by the following formula_{type1_S,c}(i)；

Wherein the pH is_{type1_S,c}(i) The method comprises the steps that when an SC-FDMA waveform actually used by a terminal is used for transmitting a PUSCH, the actual power margin of the terminal is represented;

P_{cmax_S,c}(i) represents the maximum transmission power of the terminal in the time domain transmission unit i of the serving cell c;

M_{PUSCH_S,c}(i) indicating the number of frequency domain resources of the terminal for actually transmitting PUSCH by using the SC-FDMA waveform in a time domain transmission unit i of a serving cell c;

P_{O_PUSCH_S,c}(j) an open loop power target value representing that the terminal actually uses the SC-FDMA waveform to transmit the PUSCH in a time domain transmission unit i of a serving cell c; j represents a transmission type of PUSCH, and j is 0, 1, or 2;

α_S,c(j) a path loss compensation factor on a serving cell c representing PUSCHs of different transmission types;

PL_crepresenting path loss measurements on serving cell c；

Δ_{TF_S,c}(i) Represents a power adjustment amount related to the PUSCH;

f_S,c(i) represents the cumulative value of the closed loop power control commands in time domain transmission unit i of the serving cell c.

Wherein the second computing unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, a virtual Power Headroom (PH) of the terminal based on an actually-unused OFDMA waveform is calculated by the following formula_{type1_O,c}(i)；

represents the maximum transmission power when the terminal is assumed to transmit PUSCH by an OFDMA waveform that is not actually used within the time domain transmission unit i of the serving cell c;

P_{O_PUSCH_O,c}(1) represents an open loop power target value when the terminal transmits the dynamically scheduled PUSCH by the non-actually used OFDMA waveform within the time domain transmission unit i of the serving cell c;

α_O,c(1) a path loss compensation factor representing a dynamically scheduled PUSCH on serving cell c;

f_O,c(i) represents the cumulative value of the closed loop power control commands in time domain transmission unit i of the serving cell c.

Wherein, the first calculating module 220 comprises:

a third calculation unit for calculating an actual power headroom of the terminal based on the OFDMA waveform according to the OFDMA waveform actually used when the first waveform type is the OFDMA waveform and the second waveform type is the SC-FDMA waveform; and/or the presence of a gas in the gas,

and a fourth calculating unit for calculating a virtual power headroom of the terminal based on the SC-FDMA waveform not actually used according to the OFDMA waveform actually used.

Wherein the third computing unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, an actual power headroom PH of the terminal based on an actually used OFDMA waveform is calculated by the following formula_{type1_O,c}(i)；

PH_{type1_O,c}(i)

＝P_{cmax_O,c}(i)

-{10log₁₀(M_{PUSCH_O,c}(i))+P_{O_PUSCH_O,c}(j)+α_O,c(j)·PL_c

+Δ_{TF_O,c}(i)+f_O,c(i)}dB

Wherein the pH is_{type1_O,c}(i) Representing the actual power headroom of the terminal when the terminal actually uses the OFDMA waveform to transmit the PUSCH;

P_{cmax_O,c}(i) represents the maximum transmission power of the terminal in the time domain transmission unit i of the serving cell c;

M_{PUSCH_O,c}(i) representing the number of frequency domain resources of the terminal for actually using OFDMA to transmit PUSCH in the time domain transmission unit i of the service cell c;

P_{O_PUSCH_O,c}(j) an open loop power target value representing that the terminal actually uses OFDMA to transmit PUSCH in a time domain transmission unit i of a service cell c; j represents a transmission type of PUSCH, and j is 0, 1, or 2;

α_O,c(j) a path loss compensation factor on a serving cell c representing PUSCHs of different transmission types;

PL_crepresents a path loss measurement on serving cell c;

Δ_{TF_O,c}(i) represents a power adjustment amount related to the PUSCH;

f_O,c(i) closed loop power in time domain transmission unit i representing serving cell cThe control commands accumulate values.

Wherein the fourth calculating unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, a virtual Power Headroom (PH) of the terminal based on a non-actually used SC-FDMA waveform is calculated by the following formula_{type1_S,c}(i)；

represents the maximum transmission power when the terminal is assumed to transmit PUSCH by a non-actually used SC-FDMA waveform within the time domain transmission unit i of the serving cell c;

P_{O_PUSCH_S,c}(1) represents an open loop power target value when the terminal transmits the dynamically scheduled PUSCH by a non-actually used SC-FDMA waveform within the time domain transmission unit i of the serving cell c;

α_S,c(1) a path loss compensation factor representing a dynamically scheduled PUSCH on serving cell c;

Wherein, the terminal 200 further includes:

and the processing module is used for generating a power headroom report according to the actual power headroom based on the first waveform type and/or the virtual power headroom based on the second waveform type and reporting the power headroom report to the network equipment.

Wherein, the terminal 200 further includes:

a second obtaining module, configured to obtain a second waveform type that is not actually used for physical uplink channel transmission;

and the second calculation module is used for calculating the virtual power margin of the terminal based on the second waveform type according to the second waveform type.

Wherein the second calculation module comprises:

and a fifth calculation unit for calculating a virtual power headroom of the terminal based on the SC-FDMA waveform according to the SC-FDMA waveform that is not actually used when the second waveform type is the SC-FDMA waveform.

Wherein the fifth calculating unit is specifically configured to:

when only PUCCH is transmitted in one time domain transmission unit of serving cell to which the terminal belongs, virtual power headroom PH of the terminal based on non-actually used SC-FDMA waveform is calculated by the following formula_{type1_S,c}(i)；

Wherein the second calculation module comprises:

a sixth calculating unit for calculating a virtual power headroom of the terminal based on the OFDMA waveform according to the OFDMA waveform not actually used when the second waveform type is the OFDMA waveform.

Wherein the sixth calculating unit is specifically configured to:

when only PUCCH is transmitted in one time domain transmission unit of a serving cell to which the terminal belongs, a virtual power headroom PH of the terminal based on the non-actually used OFDMA waveform is calculated by the following formula_{type1_O,c}(i)；

It is worth pointing out that, the terminal according to the embodiment of the present invention obtains the first waveform type used for the transmission of the physical uplink channel, and calculates the actual power headroom of the terminal based on the first waveform type and/or the virtual power headroom of the terminal based on the second waveform type according to the first waveform type to obtain a more accurate power headroom report, and reports the power headroom report to the network device, so that the network device can perform resource scheduling according to the more accurate power headroom report.

It should be noted that the division of each module of the terminal is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the determining module is called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

In order to better achieve the above object, an embodiment of the present invention further provides a terminal, which includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps in the power headroom calculation method are implemented. An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the power headroom calculation method described above.

Specifically, fig. 3 is a block diagram of a terminal 300 according to another embodiment of the present invention, where the terminal shown in fig. 3 includes: at least one processor 301, memory 302, user interface 303, and network interface 304. The various components in terminal 300 are coupled together by a bus system 305. It will be appreciated that the bus system 305 is used to enable communications among the components connected. The bus system 305 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 305 in fig. 3.

The user interface 303 may comprise, among other things, a display or a pointing device (e.g., a touch-sensitive pad or a touch screen, etc.).

It will be appreciated that the memory 302 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 302 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 302 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 3021 and application programs 3022.

The operating system 3021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs 3022 include various application programs, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in the application program 3022.

In an embodiment of the present invention, the terminal 300 further includes: a computer program stored on the memory 302 and executable on the processor 301, in particular a computer program in an application 3022, which computer program, when executed by the processor 301, performs the steps of: acquiring a first waveform type actually used by physical uplink channel transmission; according to the first waveform type, an actual power headroom of the terminal based on the first waveform type and/or a virtual power headroom of the terminal based on a second waveform type that is not actually used are calculated. The first waveform type is one of at least two transmission waveforms supported by the terminal, and the second waveform type is the other one of the at least two transmission waveforms supported by the terminal except the first waveform type.

The method disclosed in the above embodiments of the present invention may be applied to the processor 301, or implemented by the processor 301. The processor 301 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 301. The Processor 301 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 302, and the processor 301 reads the information in the memory 302 and completes the steps of the method in combination with the hardware.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

In particular, the computer program, when executed by the processor 301, may further implement the steps of: acquiring a first waveform type actually used by physical uplink channel transmission in a time domain transmission unit of a service cell to which a terminal belongs;

Specifically, at least two transmission waveforms supported by the terminal include: single carrier frequency division multiple access SC-FDMA waveforms and orthogonal frequency division multiple access OFDMA waveforms.

Wherein, when the first waveform type is an SC-FDMA waveform and the second waveform type is an OFDMA waveform, the computer program when executed by the processor 301 further implements the steps of: according to the SC-FDMA waveform actually used, calculating the actual power margin of the terminal based on the SC-FDMA waveform; and/or the presence of a gas in the gas,

from the actually used SC-FDMA waveform, a virtual power headroom of the terminal based on the non-actually used OFDMA waveform is calculated.

In particular, when the physical uplink channel is a physical uplink shared channel, PUSCH, the computer program when executed by the processor 301 may further implement the following steps: when only the physical uplink shared channel is transmitted in one time domain transmission unit i of the serving cell c to which the terminal belongs, the actual power headroom PH of the terminal based on the actually used SC-FDMA waveform is calculated by the following formula_{type1_S,c}(i)；

PH_{type1_S,c}(i)

＝P_{cmax_S,c}(i)

-{10log₁₀(M_{PUSCH_S,c}(i))+P_{O_PUSCH_S,c}(j)+α_S,c(j)·PL_c

+Δ_{TF_S,c}(i)+f_S,c(i)}

Wherein the pH is_{type1_S,c}(i) The actual power margin of the terminal is shown when the terminal actually uses the SC-FDMA waveform to transmit the PUSCH;

PL_crepresents a path loss measurement on serving cell c;

Δ_{TF_S,c}(i) represents a power adjustment amount related to the PUSCH;

In particular, when the physical uplink channel is a physical uplink shared channel, PUSCH, the computer program when executed by the processor 301 may further implement the following steps: when only the physical uplink shared channel is transmitted in one time domain transmission unit i of a service cell c to which the terminal belongs, the virtual power headroom PH of the terminal based on the non-actually used OFDMA waveform is calculated through the following formula_{type1_O,c}(i)；

In particular, when the first waveform type is an OFDMA waveform and the second waveform type is an SC-FDMA waveform, the computer program when executed by the processor 301 may further implement the steps of: calculating the actual power margin of the terminal based on the OFDMA waveform according to the OFDMA waveform actually used; and/or the presence of a gas in the gas,

and calculating the virtual power margin of the terminal based on the SC-FDMA waveform which is not actually used according to the OFDMA waveform which is actually used.

In particular, when the physical uplink channel is a physical uplink shared channel, PUSCH, the computer program when executed by the processor 301 may further implement the following steps: when only the physical uplink shared channel is transmitted in one time domain transmission unit i of a serving cell c to which the terminal belongs, an actual power headroom PH of the terminal based on an actually used OFDMA waveform is calculated by the following formula_{type1_O,c}(i)；

PH_{type1_O,c}(i)

＝P_{cmax_O,c}(i)

-{10log₁₀(M_{PUSCH_O,c}(i))+P_{O_PUSCH_O,c}(j)+α_O,c(j)·PL_c

+Δ_{TF_O,c}(i)+f_O,c(i)}dB

α_O,c(j) PUSCH representing different transmission typesA path loss compensation factor on serving cell c;

PL_crepresents a path loss measurement on serving cell c;

Δ_{TF_O,c}(i) represents a power adjustment amount related to the PUSCH;

In particular, when the physical uplink channel is a physical uplink shared channel, PUSCH, the computer program when executed by the processor 301 may further implement the following steps: when only the physical uplink shared channel is transmitted in one time domain transmission unit i of a service cell c to which the terminal belongs, the virtual power headroom PH of the terminal based on the non-actually used SC-FDMA waveform is calculated by the following formula_{type1_S,c}(i)；

In particular, the computer program, when executed by the processor 301, may further implement the steps of: and generating a power headroom report according to the actual power headroom based on the first waveform type and/or the virtual power headroom based on the second waveform type, and reporting the power headroom report to the network equipment.

In particular, the computer program, when executed by the processor 301, may further implement the steps of: acquiring a second waveform type which is not actually used in physical uplink channel transmission;

and according to the second waveform type, calculating the virtual power margin of the terminal based on the second waveform type.

In particular, when the second waveform type is an SC-FDMA waveform, the computer program when executed by the processor 301 may further implement the steps of: and calculating the virtual power margin of the terminal based on the SC-FDMA waveform according to the SC-FDMA waveform which is not actually used.

Specifically, when only PUCCH is transmitted in one time domain transmission unit of the serving cell to which the terminal belongs, the computer program when executed by the processor 301 may further implement the following steps: calculating a virtual power headroom PH of the terminal based on the non-actually used SC-FDMA waveform by the following formula_{type1_S,c}(i)；

α_S,c(1) path loss compensation on serving cell c for PUSCH representing dynamic schedulingA factor;

In particular, when the second waveform type is an OFDMA waveform, the computer program when executed by the processor 301 may further implement the steps of: from the non-actually used OFDMA waveform, a virtual power headroom of the terminal based on the OFDMA waveform is calculated.

Specifically, when only PUCCH is transmitted in one time domain transmission unit of the serving cell to which the terminal belongs, the computer program when executed by the processor 301 may further implement the following steps: calculating a virtual power headroom PH of the terminal based on the OFDMA waveform not actually used by the terminal by the following formula_{type1_O,c}(i)；

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A power headroom calculation method applied to a terminal side includes:

according to the first waveform type, calculating an actual power margin of the terminal based on the first waveform type and/or a virtual power margin of the terminal based on a second waveform type which is not actually used;

wherein the first waveform type is one of at least two transmission waveforms supported by the terminal, and the second waveform type is one of the at least two transmission waveforms supported by the terminal except for the first waveform type;

2. The method according to claim 1, wherein the step of obtaining the first waveform type actually used by the physical uplink channel transmission comprises:

acquiring a first waveform type actually used by physical uplink channel transmission in a time domain transmission unit of a service cell to which the terminal belongs;

wherein, the time domain transmission unit is a subframe, a time slot, a micro-slot or a time domain transmission symbol.

3. The power headroom calculation method according to claim 1, wherein when the first waveform type is an SC-FDMA waveform and the second waveform type is an OFDMA waveform, the step of calculating the actual power headroom of the terminal based on the first waveform type and/or the virtual power headroom of the terminal based on the second waveform type that is not actually used according to the first waveform type comprises:

calculating the actual power margin of the terminal based on the SC-FDMA waveform according to the actually used SC-FDMA waveform; and/or the presence of a gas in the gas,

and calculating a virtual power margin of the terminal based on the non-actually used OFDMA waveform according to the actually used SC-FDMA waveform.

4. The method according to claim 3, wherein when the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), the step of calculating the actual power headroom of the terminal based on the SC-FDMA waveform according to the actually used SC-FDMA waveform comprises:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of the serving cell c to which the terminal belongs, the actual power headroom PH of the terminal based on the actually used SC-FDMA waveform is calculated by the following formula_{type1_S,c}(i)；

PH_{type1_S,c}(i)＝P_{cmax_S，c}(i)-{10log₁₀(M_{PUSCH_S,c}(i))+P_{O_PUSCH_S,c}(j)+α_S,c(j)·PL_c+Δ_{TF_S,c}(i)+f_S,c(i)}

Wherein the pH is_{type1_S,c}(i) Representing the actual power margin of the terminal when the terminal actually uses the SC-FDMA waveform to transmit the PUSCH;

M_{PUSCH_S，c}(i) indicating the number of frequency domain resources of the terminal for actually transmitting PUSCH by using the SC-FDMA waveform in a time domain transmission unit i of a serving cell c;

P_{O_PUSCH_S，c}(j) an open loop power target value representing that the terminal actually uses the SC-FDMA waveform to transmit the PUSCH in a time domain transmission unit i of a serving cell c; j represents a transmission type of PUSCH, and j is 0, 1, or 2;

PL_crepresents a path loss measurement on serving cell c;

Δ_{TF_S,c}(i) represents a power adjustment amount related to the PUSCH;

5. The method according to claim 3, wherein the step of calculating the virtual power headroom of the terminal based on the non-actually used OFDMA waveform from the actually used SC-FDMA waveform when the physical uplink channel is a Physical Uplink Shared Channel (PUSCH) comprises:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of a service cell c to which the terminal belongs, calculating a virtual power headroom PH of the terminal based on the non-actually used OFDMA waveform by the following formula_{type1_O,c}(i)；

Wherein the pH is_{type1_O,c}(i) Representing that when the terminal actually uses the SC-FDMA waveform to transmit the PUSCH, the terminal transmits the virtual power headroom of the PUSCH through the OFDMA waveform which is not actually used;

PL_crepresents a path loss measurement on serving cell c;

6. The power headroom calculation method according to claim 1, wherein when the first waveform type is an OFDMA waveform and the second waveform type is an SC-FDMA waveform, the step of calculating the actual power headroom of the terminal based on the first waveform type and/or the virtual power headroom of the terminal based on the second waveform type that is not actually used according to the first waveform type comprises:

calculating an actual power margin of the terminal based on the OFDMA waveform according to the OFDMA waveform actually used; and/or the presence of a gas in the gas,

7. The method according to claim 6, wherein when the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), the step of calculating the actual power headroom of the terminal based on the OFDMA waveform according to the actual OFDMA waveform includes:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of the serving cell c to which the terminal belongs, the actual power headroom PH of the terminal based on the actually used OFDMA waveform is calculated by the following formula_{type1_O，c}(i)；

PH_{type1_O,c}(i)＝P_{cmax_O,c}(i)-{10log₁₀(M_{PUSCH_O,c}(i))+P_{O_PUSCH_O,c}(j)+α_O,c(j)·PL_c+Δ_{TF_O,c}(i)+f_O,c(i)}dB

Wherein the pH is_{type1_O,c}(i) Representing an actual power headroom of the terminal when the terminal actually uses an OFDMA waveform to transmit a PUSCH;

P_{cmax_O，c}(i) represents the maximum transmission power of the terminal in the time domain transmission unit i of the serving cell c;

M_{PUSCH_O，c}(i) representing the number of frequency domain resources of the terminal for actually using OFDMA to transmit PUSCH in the time domain transmission unit i of the service cell c;

α_O，c(j) a path loss compensation factor on a serving cell c representing PUSCHs of different transmission types;

PL_crepresents a path loss measurement on serving cell c;

Δ_{TF_O,c}(i) represents a power adjustment amount related to the PUSCH;

8. The method according to claim 6, wherein the step of calculating the virtual power headroom of the terminal based on the non-actually used SC-FDMA waveform according to the actually used OFDMA waveform when the physical uplink channel is a Physical Uplink Shared Channel (PUSCH) comprises:

when only the physical uplink shared channel is transmitted in one time domain transmission unit i of a service cell c to which the terminal belongs, calculating the virtual power headroom PH of the terminal based on the non-actually used SC-FDMA waveform by the following formula_{type1_S,c}(i)；

Wherein the pH is_{type1_S,c}(i) Representing that when the terminal actually uses the OFDMA waveform to transmit the PUSCH, the terminal transmits the virtual power headroom of the PUSCH through the SC-FDMA waveform which is not actually used;

P_{O_PUSCH_S，c}(1) represents an open loop power target value when the terminal transmits the dynamically scheduled PUSCH by a non-actually used SC-FDMA waveform within the time domain transmission unit i of the serving cell c;

PL_crepresents a path loss measurement on serving cell c;

9. The method according to claim 1, further comprising, after the step of calculating an actual power headroom of the terminal based on a first waveform type and/or a virtual power headroom of the terminal based on a second waveform type that is not actually used according to the first waveform type, the steps of:

and generating a power headroom report according to the actual power headroom based on the first waveform type and/or the virtual power headroom based on the second waveform type, and reporting the power headroom report to the network equipment.

10. The method according to claim 9, wherein before the step of generating and reporting the power headroom report to the network device according to the actual power headroom based on the first waveform type and/or the virtual power headroom based on the second waveform type, the method further comprises:

acquiring a second waveform type which is not actually used in physical uplink channel transmission;

and calculating the virtual power margin of the terminal based on the second waveform type according to the second waveform type.

11. The power headroom calculation method of claim 10, wherein when the second waveform type is an SC-FDMA waveform, the step of calculating the virtual power headroom of the terminal based on the second waveform type according to the second waveform type comprises:

and calculating the virtual power margin of the terminal based on the SC-FDMA waveform according to the SC-FDMA waveform which is not actually used.

12. The method of claim 11, wherein the step of calculating the virtual power headroom of the terminal based on the SC-FDMA waveform according to the non-actually used SC-FDMA waveform when only the PUCCH is transmitted in one time-domain transmission unit of the serving cell to which the terminal belongs comprises:

calculating a virtual power headroom PH of the terminal based on a non-actually used SC-FDMA waveform by the following formula_{type1_S,c}(i)；

Wherein the pH is_{type1_S,c}(i) Representing only one time domain transmission unit i of the serving cell c to which the terminal belongsWhen PUCCH is transmitted, the terminal transmits the virtual power allowance of PUSCH through the SC-FDMA waveform which is not actually used;

PL_crepresents a path loss measurement on serving cell c;

13. The power headroom calculation method of claim 10, wherein when the second waveform type is an OFDMA waveform, the calculating of the virtual power headroom of the terminal based on the second waveform type according to the second waveform type comprises:

calculating a virtual power headroom of the terminal based on the OFDMA waveform according to the OFDMA waveform not actually used.

14. The method of claim 13, wherein the step of calculating the virtual power headroom of the terminal based on the OFDMA waveform according to the OFDMA waveform not actually used when only the PUCCH is transmitted in one time domain transmission unit of the serving cell to which the terminal belongs comprises:

calculating a virtual power headroom PH of the terminal based on the OFDMA waveform not actually used by the terminal by the following formula_{type1_O，c}(i)；

Wherein the pH is_{type1_O,c}(i) When only PUCCH is transmitted in one time domain transmission unit i of a service cell c which represents the terminal, the terminal transmits the virtual power margin of PUSCH through an OFDMA waveform which is not actually used;

P_{O_PUSCH_O，c}(1) represents an open loop power target value when the terminal transmits the dynamically scheduled PUSCH by the non-actually used OFDMA waveform within the time domain transmission unit i of the serving cell c;

PL_crepresents a path loss measurement on serving cell c;

15. A terminal, comprising:

16. The terminal of claim 15, wherein the first obtaining module comprises:

an obtaining unit, configured to obtain a first waveform type actually used for physical uplink channel transmission in a time domain transmission unit of a serving cell to which the terminal belongs;

17. The terminal of claim 15, wherein the first computing module comprises:

a first calculation unit for calculating an actual power headroom of the terminal based on an SC-FDMA waveform according to an SC-FDMA waveform actually used when the first waveform type is an SC-FDMA waveform and the second waveform type is an OFDMA waveform; and/or the presence of a gas in the gas,

a second calculation unit for calculating a virtual power headroom of the terminal based on the non-actually used OFDMA waveform from the actually used SC-FDMA waveform.

18. The terminal according to claim 17, wherein the first computing unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, calculating an actual Power Headroom (PH) of the terminal based on an actually used SC-FDMA waveform by using the following formula_{type1_S,c}(i)；

PH_{type1_S,c}(i)＝P_{cmax_S,c}(i)-{10log₁₀(M_{PUSCH_S，c}(i))+P_{O_PUSCH_S，c}(j)+α_S，c(j)·PL_c+Δ_{TF_S，c}(i)+f_S，c(i)}

Wherein the pH is_{type1_S，c}(i) To representWhen the terminal actually uses the SC-FDMA waveform to transmit the PUSCH, the actual power margin of the terminal is obtained;

PL_crepresents a path loss measurement on serving cell c;

Δ_{TF_S,c}(i) represents a power adjustment amount related to the PUSCH;

19. The terminal according to claim 17, wherein the second calculating unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, calculating a virtual Power Headroom (PH) of the terminal based on an OFDMA waveform which is not actually used according to the following formula_{type1_O,c}(i)；

α_O，c(1) a path loss compensation factor representing a dynamically scheduled PUSCH on serving cell c;

PL_crepresents a path loss measurement on serving cell c;

20. The terminal of claim 15, wherein the first computing module comprises:

a third calculation unit for calculating an actual power headroom of the terminal based on the OFDMA waveform according to an OFDMA waveform actually used when the first waveform type is the OFDMA waveform and the second waveform type is the SC-FDMA waveform; and/or the presence of a gas in the gas,

a fourth calculating unit, configured to calculate a virtual power headroom of the terminal based on the non-actually used SC-FDMA waveform according to the actually used OFDMA waveform.

21. The terminal according to claim 20, wherein the third computing unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, calculating an actual Power Headroom (PH) of the terminal based on an actually used OFDMA waveform by using the following formula_{type1_O,c}(i)；

PL_crepresents a path loss measurement on serving cell c;

Δ_{TF_O,c}(i) represents a power adjustment amount related to the PUSCH;

22. The terminal according to claim 20, wherein the fourth calculating unit is specifically configured to:

if the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), when only the physical uplink shared channel is transmitted in a time domain transmission unit i of a serving cell c to which the terminal belongs, calculating a virtual Power Headroom (PH) of the terminal based on a non-actually used SC-FDMA waveform by using the following formula_{type1_S,c}(i)；

Wherein the pH is_{type1_S,c}(i) Representing the terminal realityWhen the PUSCH is transmitted by using the OFDMA waveform, the terminal transmits the virtual power headroom of the PUSCH by using the SC-FDMA waveform which is not actually used;

PL_crepresents a path loss measurement on serving cell c;

23. The terminal of claim 15, wherein the terminal further comprises:

24. The terminal of claim 23, wherein the terminal further comprises:

and the second calculation module is used for calculating the virtual power headroom of the terminal based on the second waveform type according to the second waveform type.

25. The terminal of claim 24, wherein the second computing module comprises:

and a fifth calculation unit for calculating a virtual power headroom of the terminal based on the SC-FDMA waveform according to a SC-FDMA waveform that is not actually used when the second waveform type is the SC-FDMA waveform.

26. The terminal according to claim 25, wherein the fifth calculating unit is specifically configured to:

when only PUCCH is transmitted in one time domain transmission unit of the serving cell to which the terminal belongs, a virtual power headroom PH of the terminal based on a non-actually used SC-FDMA waveform is calculated by the following formula_{type1_S,c}(i)；

PL_crepresents a path loss measurement on serving cell c;

27. The terminal of claim 24, wherein the second computing module comprises:

a sixth calculating unit for calculating a virtual power headroom of the terminal based on the OFDMA waveform according to the OFDMA waveform that is not actually used when the second waveform type is the OFDMA waveform.

28. The terminal according to claim 27, wherein the sixth calculating unit is specifically configured to:

PL_crepresents a path loss measurement on serving cell c;

29. A terminal, characterized in that it comprises a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the power headroom calculation method according to any of claims 1 to 14 when executing the computer program.

30. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the power headroom calculation method according to one of claims 1 to 14.