WO2017124846A1 - Power control method and device - Google Patents

Abstract

The present invention provides a power control method and device. The method comprises: determining that information is transmitted on an unlicensed carrier; performing power control on the unlicensed carrier in at least one of the following manners: power is controlled according to a power spectral density (PSD) based on a resource element (RE); adjusting a PSD based on a resource block (RB) and controlling power according to the adjusted PSD; controlling power according to the PSD of actual data and the PSD of an occupying signal, wherein said actual data is data actually transmitted by a transmitting terminal and said occupying signal is a signal used for occupying a channel; controlling power according to a power offset; controlling power by means of adaptive adjustment or semi-static adjustment CCA detection of a threshold; controlling power by means of controlling the range of values of at least one parameter related to power control. The present invention solves the problem in the related art of it being impossible to effectively control the power of an unlicensed carrier.

Description

Power control method and device Technical field

The present invention relates to the field of communications, and in particular to a power control method and apparatus.

Background technique

Starting from the 3GPP R10 release, CA (Carriers Aggregation) technology is adopted in LTE-A (Long Term Evolution-Advanced, LTE Evolution) to meet the requirements of IMT-Advanced (International Mobile Telecommunications-Advanced). It further supports a wider communication bandwidth than LTE (Long Term Evolution). The main principle of carrier aggregation is to support a maximum of 100 MHz bandwidth by aggregating multiple LTE backward compatible carriers. In an aggregated system, a carrier to be aggregated is called a CC (Component Carrier), which is also called a Cell. At the same time, a PCC/PCell (Pr-imary Component Carrier/Cell) is also proposed. The concept of the cell) and the SCC/SCell (Secondary Component Carrier/Cell). In the system for carrier aggregation, at least one PCC/PCell and SCC/SCell are included, and the PCC/PCell is always in the Active state. When the uplink signals on multiple CCs are simultaneously transmitted, if the total transmit power of the uplink signals on multiple CCs exceeds PA (Power Amplifier, Amplifiers) can support a maximum linear power, all of the uplink power reduction signals to ensure that all of the transmit power of the uplink signal and the power does not exceed the maximum linear PA can be supported.

For example, when a PUCCH (Physical Uplink Control Channel) is transmitted and a PUSCH (Physical Uplink Shared Channel) that does not include UCI (Uplink Control Information) is transmitted, power reduction (Power Scaling) The formula is:

For example, when transmitting a PUSCH that does not include UCI and a PUSCH that includes UCI, the power reduction formula is:

For example, when transmitting a PUCCH simultaneously and transmitting a PUSCH that does not include UCI and transmitting a PUSCH including UCI, the power reduction formula is:

表示第i个子帧允许的最大发射功率，

表示第i个子帧的PUCCH的功率，

表示载波索引c上第i个子帧的PUSCH的功率，

表示第j个服务小区且是包含UCI的小区，w(i)表示载波索引c上第i个子帧的功率削减因子，0≤w(i)≤1。The above four formulas, in which "^" represents a linear value,

Indicates the maximum transmit power allowed for the i-th subframe,

Indicates the power of the PUCCH of the i-th subframe,

Indicates the power of the PUSCH of the i-th subframe on the carrier index c,

Indicates the jth serving cell and is a cell including UCI, and w(i) represents the power reduction factor of the i-th subframe on the carrier index c, 0 ≤ w(i) ≤ 1.

At the same time, the power control performed on a CC is a combination of PSD (Power Spectral Density) and open-loop and closed-loop, wherein PSD represents a calculation in units of RB (Resource Block), that is, Assume that the power required for all REs (Resource Elements) in the unit RB is occupied. Then, when the service is specifically transmitted, the used power can be calculated according to the number of allocated RBs. More specifically, the final computational power includes the number of allocated RBs, PSD, path loss complement, modulation and coding format of the transmitted data, cumulative or absolute power adjustment.

For example, the power of the PUSCH is:

For example, the power of the PUCCH is:

The above two formulas can be abbreviated as:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _c (i))+P _O,c (j)+PL _c +TF _c (i)+f _c (i)}, Where P _c (i) represents the calculated power of the i-th subframe on the carrier index c, P _CMAX,c (i) represents the maximum allowed transmit power of the i-th subframe on the carrier index c, and M _c (i) represents the carrier The number of scheduling RBs of the i-th subframe on index c, j = {0, 1, 2} of P _O,c (j) respectively represent semi-persistent scheduling service, dynamic scheduling service, PSD corresponding to random access, PL _c Representing the path loss complement on the carrier index c, TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the carrier index c, and f _c (i) represents the accumulation or absolute of the i-th subframe on the carrier index c Power adjustment amount. In addition, the industry regards P _O,c (j)+PL _c as open-loop power control, and considers TF _c (i)+f _c (i) as closed-loop power control, seeing P _O,c (j) PSD (this is the first PSD definition), or P _O,c (j)+TF _c (i)+f _c (i) as PSD (this is the second PSD definition).

The foregoing CAs are all for authorized carriers. With the rapid growth of data services, the data transmission pressure on the carrier of the licensed spectrum is also increasing. Therefore, the data traffic in the licensed carrier is shared by the carrier of the unlicensed spectrum. An important evolution direction of the subsequent LTE development.

The Rel-13 version of the LTE system began to be researched in September 2014. One of the important research topics is the carrier work of the LTE system using unlicensed spectrum, also known as LAA (Licensed Assisted Access). This technology will enable the LTE system to use the carriers of the existing unlicensed spectrum, greatly increasing the potential spectrum resources of the LTE system, enabling the LTE system to obtain lower spectrum costs.

Unlicensed carriers have the following characteristics:

1. Free/low cost: no need to purchase unlicensed spectrum, spectrum resource is zero cost;

2. Low access requirements and low cost: individuals and enterprises can participate in deployment, and equipment of equipment vendors can be deployed at will;

3, the available bandwidth is large: 5GHz, 2.4GHz and other frequency bands in the unlicensed spectrum can be used, with features of large available bandwidth;

4. Shared resources: When multiple different systems are operating, or when different operators of the same system are operating, you can consider some ways of sharing resources to improve spectrum efficiency.

5, wireless access technology: can use different communication standards, but the difficulty of collaboration, network topology;

6. There are many wireless access sites: the number of users is large, but the cooperation is difficult, and the centralized management overhead is large;

7, applications: a variety of services can be operated in it, for example: M2M (Machine to machine) business, V2V (Vehicle to vehicle, car to car) business.

The above characteristics determine that the unlicensed carrier may be an important evolution direction of the wireless communication system. However, if the unlicensed carrier is to be applied, it needs to comply with the regulatory requirements issued by the industry or the region, and the regulation of the occupied bandwidth is that the transmitting end transmits Meet 80% of the bandwidth resources occupying system bandwidth or nominal bandwidth.

At present, the industry is studying how to meet the bandwidth of 80% of the system bandwidth or nominal bandwidth when transmitting. For example, the data to be transmitted is distributed over 80% of the bandwidth resources, or interleaved to 80% of the bandwidth resources, or mapped to 80% of the bandwidth resources. Specifically, the continuous or discrete mapping is performed in units of resource blocks in subcarriers. Specifically, it can be divided into the following types:

The user equipment (User Equipment) actually occupies 80% of the bandwidth resources, including:

(1-1) 80% bandwidth resources adopt RB centralized type;

(1-2) 80% of bandwidth resources are distributed by RB;

(1-3) 80% of bandwidth resources adopt RE centralized;

(1-4) 80% of bandwidth resources are distributed by RE.

2. The Single UE spans 80% of the bandwidth resources, but does not mean that it actually fills up, including:

(2-1) The comb structure is uniformly dispersed in the bandwidth resource with a span of 80% or more;

(2-2) The cluster structure is dispersed within a bandwidth resource having a span of 80% or more.

3. The Single UE uses a small amount of bandwidth that uses "actually 80% of bandwidth resources", including:

(3-1) The power corresponding to a small amount of bandwidth needs to meet the CCA (Clear Channel Assessment) detection threshold requirement.

4. Multiple UEs actually occupy 80% of bandwidth resources, including:

(4-1) eNB (Evolved Base Station) scheduling multiple UEs automatically consider that the regulation has been met regardless of whether the UE is successful in CCA;

(4-2) The multiple UE transmits the occupancy signal using the common muting UE.

However, after the above processing, the existing mechanisms for power control, allocation, or adjustment of the licensed carrier will no longer be directly applicable. At this time, if power control is still performed with the PSD that fills all REs within the unit RB for the authorized carrier, power waste will result. After the CCA of the unlicensed carrier fails, the remaining CCs occupied by the transmitting end also face the problem of power reduction processing. This problem cannot be achieved by using the existing power reduction mechanism for the licensed carrier. In addition, since the CCA of the unlicensed carrier may be successful at any position within the subframe, and the original system power adjustment is for the entire subframe, a problem of partial subframe power adjustment may occur.

For the related art, the problem of effective control of the power of the unlicensed carrier cannot be realized, and an effective solution has not been proposed yet.

Summary of the invention

The embodiment of the invention provides a power control method and device to solve at least the problem that the power of the unlicensed carrier cannot be effectively controlled in the related art.

According to an embodiment of the present invention, a power control method is provided, including: determining to transmit information on an unlicensed carrier; performing power control on the unlicensed carrier by at least one of: according to a power spectrum based on the resource unit RE Density PSD performs power control; adjusts the PSD based on the resource block RB, and performs power control according to the adjusted PSD; performs power control according to the PSD of the actual data and the PSD of the occupied signal, wherein the actual data is actually transmitted by the transmitting end. Data, the occupied signal is a signal for occupying the channel; the power control is performed according to the power offset, wherein the power offset is an offset of the power of the unlicensed carrier relative to the power calculated by the authorized carrier mode; Adjusting or semi-statically adjusting the idle channel to evaluate the CCA detection threshold for power control; adjusting the value range of at least one parameter related to power control for power control; controlling power reduction of the licensed carrier and the unlicensed carrier, or controlling the authorized carrier group Power control is performed with power reduction of unlicensed carrier groups.

Optionally, performing power control according to the power spectral density PSD based on the resource unit RE includes one of: performing power control according to PSD of the number of valid REs in the unit RB; performing power control according to PSD of the unit RE; and PSD according to the total RE Perform power control.

Optionally, performing power control according to the PSD of the number of valid REs in the unit RB includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i)=min{P _CMAX,c ( i), 10log ₁₀ (M _c (i)) + P _{O, c_RB_RE} (j) + X _c (i)}, where X _c (i) = PL _c + TF _c (i) + f _c (i) P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, M _c (i) indicates the number of RBs scheduled for the i-th subframe on the unlicensed carrier with index c, P _{O, c_RB_RE} (j) represents the PSD of the number of valid REs in the unit RB, j ∈ {0, 1, 2}, PL _c Indicates the path loss compensation on the unlicensed carrier whose index is c, TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier with index c, and f _c (i) denotes the index of c The cumulative value of the power adjustment amount of the i-th subframe on the unlicensed carrier or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

Optionally, performing power control according to the PSD of the number of valid REs in the unit RB includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i)=min{P _CMAX,c ( i), 10log ₁₀ (M _c (i)) + PSD _{c_RB_RE} (i) + PL _c }, where P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) indicates the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) indicates the number of RBs scheduled for the i-th subframe on the unlicensed carrier with index c, PSD _{c_RB_RE} (i) unauthorized first carrier c, i denotes an index of an effective amount of the unit RB RE subframes PSD, PL _c denotes the index of the path loss compensation unlicensed carrier c.

Optionally, performing power control according to the PSD of the unit RE includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i)=min{P _CMAX,c (i), 10log ₁₀ (M _{c_RE} (i)) + P _{O, c_RE} (j) + X _c (i)}, where X _c (i) = PL _c + TF _c (i) + f _c (i), P _c ( i) indicates the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _{c_RE} (i) indicates The number of REs scheduled in the i-th subframe on the unlicensed carrier with index c, P _{O, c_RE} (j) represents the PSD based on RE, PL _c represents the path loss compensation on the unlicensed carrier with index c, TF _c (i a modulation coding format indicating the transmission data of the i-th subframe on the unlicensed carrier whose index is c, and f _c (i) indicating the cumulative value or index of the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c is The absolute power adjustment of the i-th subframe on the unlicensed carrier of c.

Optionally, performing power control according to the PSD of the unit RE includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i)=min{P _CMAX,c (i), 10log ₁₀ (M _{c_RE} (i)) + PSD _{c_RE} (i) + PL _c }, where P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) represents The maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, M _{c_RE} (i) indicates the number of REs scheduled for the i-th subframe on the unlicensed carrier with index c, and PSD _{c_RE} (i) indicates that the index is c unauthorized first subframe i represents the carrier index as a path loss compensation on the c-RE unauthorized carrier based on the PSD, PL _c.

Optionally, performing power control according to the PSD of the total RE includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i)=min{P _CMAX,c (i), P _{c, Total_RE} (j) + X _c (i)}, where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) denotes an unauthorized authorization index c The power of the i-th subframe on the carrier, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, P _{c, Total_RE} (j) represents the power of the total RE, j ∈{0,1,2}, PL _c represents the path loss compensation on the unlicensed carrier with index c, and TF _c (i) represents the modulation and coding format of the transmitted data of the ith subframe on the unlicensed carrier with index c , f _c (i) represents the integrated value of the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

Optionally, adjusting the PSD based on the resource block RB and performing power control according to the adjusted PSD includes: adjusting an RB-based PSD in a frequency domain, and performing power control based on the adjusted PSD; and/or The RB-based PSD is adjusted in the time domain and power control is performed based on the adjusted PSD.

Optionally, adjusting the RB-based PSD in the frequency domain and performing power control based on the adjusted PSD includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i )=min{P _CMAX,c (i),10log ₁₀ (K*M _c (i))+P _O,c (j)+X _c (i)}, where X _c (i)=PL _c + TF _c (i)+f _c (i), 0≤K≤1, P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) indicates that the index is c The maximum transmit power allowed for the i-th subframe on the unlicensed carrier, M _c (i) represents the number of RBs scheduled for the i-th subframe on the unlicensed carrier indexed c, and K represents the reciprocal of the comb factor or the comb in the unit RB The number of REs is a percentage of the total number of REs in the frequency domain of the unit RB, P _O,c (j) represents the PSD based on RB, j ∈ {0, 1, 2}, and PL _c represents the unlicensed carrier with index c Path loss compensation, TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier with index c, and f _c (i) represents the i-th subframe of the unlicensed carrier with index c The cumulative value of the power adjustment or the ith on the unlicensed carrier with index c The absolute power adjustment of the subframe.

Optionally, adjusting the RB-based PSD in the frequency domain and performing power control based on the adjusted PSD includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i )=min{P _CMAX,c (i),10log ₁₀ (K*M _c (i))+PSD _c (i)+PL _c }, where 0≤K≤1, P _c (i) indicates that the index is The power of the i-th subframe on the unlicensed carrier of c, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) denotes the non-index of c The number of RBs scheduled for the i-th subframe on the authorized carrier, K represents the reciprocal of the comb factor or the percentage of comb-like REs in the unit RB as a percentage of the total number of REs in the unit RB, and PSD _c (i) represents the non-index of c authorizing the first subframe i represents the carrier index as a path loss compensation on the c-carrier based on the RB unauthorized PSD, PL _c.

Optionally, adjusting the RB-based PSD in the time domain and performing power control based on the adjusted PSD includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i )=min{P _CMAX,c (i),10log ₁₀ (L*M _c (i))+P _O,c (j)+X _c (i)}, where X _c (i)=PL _c + TF _c (i)+f _c (i), 0≤L≤1, P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) indicates that the index is c The maximum transmit power allowed for the i-th subframe on the unlicensed carrier, M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier with index c, and L represents the pre-emptive orthogonal frequency fraction in the unit RB. The number of multiplexed OFDM symbols is a percentage of the total number of OFDM symbols in the time domain of the unit RB, P _O,c (j) represents the RB-based PSD, j ∈ {0, 1, 2}, and PL _c represents the index of c The path loss compensation on the authorized carrier, TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier with index c, and f _c (i) represents the i-th on the unlicensed carrier with index c The cumulative value of the power adjustment amount of one subframe or the non-authorization of index c The first wave of the i-th frame of the absolute power adjustment amount.

Optionally, adjusting the RB-based PSD in the time domain and performing power control based on the adjusted PSD includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i )=min{P _CMAX,c (i),10log ₁₀ (L*M _c (i))+PSD _c (i)+PL _c }, where 0≤L≤1, P _c (i) indicates that the index is The power of the i-th subframe on the unlicensed carrier of c, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) denotes the non-index of c The number of RBs scheduled in the i-th subframe on the authorized carrier, L indicates the percentage of the number of OFDM symbols preempted in the unit RB to the total number of OFDM symbols in the time domain of the unit RB, and PSD _c (i) indicates the unlicensed carrier with index c the first sub-frame based on the RB i PSD, PL _c denotes the index of a path loss compensation on c unauthorized carrier.

Optionally, adjusting the RB-based PSD in the frequency domain and performing power control based on the adjusted PSD, And/or adjusting the RB-based PSD in the time domain, and performing power control based on the adjusted PSD, the method further includes: setting a first preset control parameter set and a second preset control parameter set, where A preset control parameter set is used when the unit RBs occupy all the REs in the time domain and the frequency domain or when the transmitting end transmits the complete subframe, and the second preset control parameter set is in the frequency domain of the unit RB. It is used when all REs are not occupied or when a partial subframe is transmitted at the transmitting end.

Optionally, performing power control according to the PSD of the actual data and the PSD of the occupied signal comprises: calculating the power of the i-th subframe on the unlicensed carrier with index c by the following formula: P _c (i)=min{P _CMAX,c (i), 10log ₁₀ (M _{c_DATA} (i)) + P _{O, c_DATA} (j) + 10log ₁₀ (M _{c_OS} (i)) + P _{O, c_OS} (j) + X _c (i)}, where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) denotes the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) denotes an index The maximum transmit power allowed for the i-th subframe on the unlicensed carrier of c, M _{c_DATA} (i) indicates the number of RBs occupied by the actual data in the i-th subframe on the unlicensed carrier with index c, P _{O, c_DATA} (j) The PSD representing the actual data, M _{c_OS} (i) represents the number of RBs occupied by the occupied signal of the i-th subframe on the unlicensed carrier with index c, P _{O, c_OS} (j) represents the PSD of the occupied signal, j ∈ {0, 1, 2}, PL _c represents the path loss compensation on the unlicensed carrier with index c, and TF _c (i) represents the modulation and coding format of the transmitted data of the i-th subframe on the unlicensed carrier with index c, f _c ( i) indicates the i-th child on the unlicensed carrier with index c The power adjustment amount integrated value or index to absolute power adjustment amount c i of the first subframe unauthorized carrier.

Optionally, performing power control according to the PSD of the actual data and the PSD of the occupied signal comprises: calculating the power of the i-th subframe on the unlicensed carrier with index c by the following formula: P _c (i)=min{P _CMAX,c (i), 10log ₁₀ (M _{c_DATA} (i)) + PSD _{c_DATA} (i) + 10log ₁₀ (M _{c_OS} (i)) + PSD _{c_OS} (i) + PL _c }, where P _c (i) indicates that the index is The power of the i-th subframe on the unlicensed carrier of c, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _{c_DATA} (i) represents the non-index of c The i-th subframe on the authorized carrier schedules the number of RBs occupied by the actual data. PSD _{c_DATA} (i) represents the PSD of the actual data of the i-th subframe on the unlicensed carrier with index c, and _{Mc_OS} (i) indicates the non-authorization of index c. The number of RBs occupied by the occupied signal of the i-th subframe on the carrier, PSD _{c_OS} (i) represents the PSD of the occupied signal of the i-th subframe on the unlicensed carrier with index c, and PL _c represents the unlicensed carrier with index c Road loss compensation.

Optionally, performing power control according to the power offset includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i)=min{P _CMAX,c (i),P _OFFSET,c (i)+10log ₁₀ (M _c (i))+P _O,c (j)+X _c (i)}, where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, and P _CMAX,c (i) represents the maximum transmission allowed for the i-th subframe on the unlicensed carrier with index c Power, M _c (i) represents the number of RBs scheduled in the ith subframe on the unlicensed carrier with index c, P _O,c (j) represents the PSD based on RB, j ∈ {0, 1, 2}, P _{OFFSET , c} (i) represents the power offset of the i-th subframe on the unlicensed carrier with index c, PL _c represents the path loss compensation on the unlicensed carrier with index c, and TF _c (i) denotes the index of c The modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier, f _c (i) represents the integrated value of the power adjustment amount of the i-th subframe on the unlicensed carrier with index c or the unlicensed carrier with index c The absolute power adjustment amount of the i-th subframe.

Optionally, performing power control according to the power offset includes: calculating, by using the following formula, the power of the i-th subframe on the unlicensed carrier with index c: P _c (i)=min{P _CMAX,c (i),P _OFFSET,c (i)+10log ₁₀ (M _c (i))+PSD _c (i)+PL _c }, where P _c (i) represents the power of the ith subframe on the unlicensed carrier with index c, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) represents the number of RBs scheduled for the i-th subframe on the unlicensed carrier with index c, P _OFFSET,c (i) represents the offset of the i-th subframe on the unlicensed carrier with index c, and PSD _c (i) represents the ith-based RB-based PSD on the unlicensed carrier with index c, PL _c represents Path loss compensation on an unlicensed carrier with index c.

Optionally, the at least one parameter related to power control includes at least one of: P _O,c ;PL _c ;TF _c ;f _c , where P _O,c represents an RB-based PSD, and PL _c represents an index of c Path loss compensation on the unlicensed carrier, TF _c represents the modulation and coding format of the transmitted data on the unlicensed carrier with index c, and f _c represents the accumulated value of the power adjustment amount of the unlicensed carrier with index c or index c The absolute power adjustment of the unlicensed carrier.

Optionally, by controlling power reduction of the authorized carrier and the unlicensed carrier, or controlling power reduction of the authorized carrier group and the unlicensed carrier group, performing power control includes: controlling the authorized carrier and the unlicensed carrier to always adopt a unified power reduction factor, For power control; or for the case where the unlicensed carrier CCA detection succeeds and the unlicensed carrier CCA detection fails, control two cases to adopt different power reduction factors for power control; or control the authorized carrier group and the unlicensed carrier. The groups use different power reduction factors for power control.

Optionally, for the case that the unlicensed carrier CCA detection succeeds and the unlicensed carrier CCA detection fails, the two conditions are controlled to adopt different power reduction factors for performing power control, including: the unlicensed carrier CCA detection is successful and is needed In the case of performing power reduction, the control adopts a first power reduction factor, wherein the first power reduction factor is valid for all scheduled authorized carriers and all scheduled unlicensed carriers; the unlicensed carrier CCA detection fails and power is required In the case of reduction, the control employs a second power reduction factor, wherein the second power reduction factor is valid for all scheduled authorized carriers, all unlicensed carriers that are scheduled and CCA detected successfully.

Optionally, before performing power control on the unlicensed carrier, the method further includes: determining a priority of the carrier type and/or a priority of the channel type by using a display mode or a system default manner, where the carrier type includes the authorized carrier type and Unlicensed carrier type, the channel type includes the type of channel on the licensed carrier and the type of channel on the unlicensed carrier.

Optionally, determining the priority of the carrier type and/or the priority of the channel type by using the display manner includes: receiving a priority of a carrier type notified by the network side in a dynamic/semi-static form and/or a priority of the channel type.

Optionally, determining the priority of the carrier type and/or the priority of the channel type by using the display manner includes: receiving a control instruction of the user equipment UE, where the control instruction is to control to increase or decrease the priority and/or channel type of the carrier type. The priority of the instruction.

Optionally, in the case that the priority of the carrier type is determined by using the system default manner, the priority of the carrier type is set from high to low: the primary carrier on the authorized carrier, the secondary carrier on the authorized carrier, and the unlicensed carrier. The secondary carrier; or the primary carrier on the authorized carrier, the secondary carrier on the unlicensed carrier, and the secondary carrier on the authorized carrier.

Optionally, the priority of the channel type is determined by adopting a system default manner, and the priority of the channel type is set from high to low as follows: physical uplink control channel PUCCH, physical carrying uplink control information UCI Uplink shared channel PUSCH, PUSCH that does not carry UCI.

Optionally, after determining the priority of the carrier type and/or the priority of the channel type by using the display mode or the system default manner, the method further includes: receiving a switching instruction, where the switching instruction is used to switch the display mode to the system default Mode, or switch the system default mode to display mode.

Optionally, performing power control on the unlicensed carrier includes: performing power control according to the priority.

According to another embodiment of the present invention, there is provided a power control apparatus comprising: a determining unit configured to determine to transmit information on an unlicensed carrier; and a control unit configured to perform the unlicensed carrier in at least one of the following manners Power control: power control according to power spectral density PSD based on resource unit RE; adjustment of PSD based on resource block RB, and power control according to adjusted PSD; power control according to PSD of actual data and PSD of occupied signal Wherein, the actual data is data actually transmitted by the transmitting end, and the occupied signal is a signal for occupying the channel; the power control is performed according to the power offset, wherein the power offset is the power of the unlicensed carrier relative to the authorized carrier mode Calculated power offset; power control by adaptively adjusting or semi-statically adjusting idle channel evaluation CCA detection threshold; performing power control by adjusting a value range of at least one parameter related to power control; by controlling authorized carrier and non- Power reduction of authorized carriers, or control of authorized carrier groups and non-authorization Power reduction of the carrier group for power control.

In the embodiment of the present invention, a computer storage medium is further provided, and the computer storage medium may store an execution instruction for performing the implementation of the power control method in the above embodiment.

In the embodiment of the present invention, by determining to transmit information on an unlicensed carrier, performing power control according to the RE-based PSD, adjusting the PSD based on the resource block RB, performing power control according to the adjusted PSD, and PSD according to actual data. The PSD occupying the signal performs power control, performs power control according to the power offset, performs power control through adaptive adjustment or semi-static adjustment of the CCA detection threshold, and performs power control by adjusting a value range of at least one parameter related to power control or By controlling the power reduction of the authorized carrier and the unlicensed carrier (or controlling the power reduction of the authorized carrier group and the unlicensed carrier group), the power control is implemented, and the effective control of the unlicensed carrier power is realized, which solves the problem that the related technology cannot achieve the right The problem of effective control of the power of the licensed carrier avoids the power waste caused by the power control based on the PSD that fills all the REs in the unit RB, reduces the interference caused by the excessive power transmission, and effectively reduces the interference. Energy consumption at the transmitting end.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flow chart of a power control method according to an embodiment of the present invention;

2 is a schematic diagram of a power control device in accordance with an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In addition, you need to explain the following issues:

(1) The transmitter on the unlicensed carrier shall meet the control of 80% of the bandwidth resources occupying the system bandwidth or the nominal bandwidth. However, sometimes the RE does not map full in the unit RB at the transmitting end. For example, when a comb structure is uniformly dispersed in a bandwidth resource with a span of 80% or more, the RE may not be mapped in the unit RB at the time of transmission.

(2) Since the CCA of the unlicensed carrier may be successful at any position within the subframe, and the power adjustment of the original system (the power adjustment system for the licensed carrier) is for the entire subframe, partial subframe power adjustment may occur. problem.

(3) The actual data and the occupied signal can occupy 80% of the bandwidth resource range, wherein the occupied signal is mainly used to satisfy the control of 80% of the bandwidth resource. However, at this time, if power control is still performed based on the PSD that fills all REs within the unit RB, power waste will result.

(4) In the case where the total calculated power of the scheduled authorized carrier and the scheduled unlicensed carrier exceeds the maximum linear power that the PA can support, the transmitting end estimates that power reduction is required. However, if it is considered that there is a possibility of failure of the CCA detection of the unlicensed carrier, a new requirement will be put forward for the power control of the unlicensed carrier.

In response to one or more of the above problems, the present application proposes an embodiment of a power control method.

FIG. 1 is a flowchart of a power control method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, determining to transmit information on an unlicensed carrier;

Step S104: Perform power control on the unlicensed carrier by using at least one of: performing power control according to a power spectral density PSD based on the resource unit RE; adjusting a PSD based on the resource block RB, and performing power according to the adjusted PSD Control; power control according to the PSD of the actual data and the PSD of the occupied signal, wherein the actual data is the data actually transmitted by the transmitting end, the occupied signal is a signal for occupying the channel; the power control is performed according to the power offset, wherein the power The offset is an offset of the power of the unlicensed carrier relative to the power calculated by the authorized carrier mode; the power control is performed by adaptively adjusting or semi-statically adjusting the idle channel to evaluate the CCA detection threshold; and adjusting at least one related to the power control The value range of the parameter is used for power control; power control is performed by controlling power reduction of the licensed carrier and the unlicensed carrier, or controlling power reduction of the authorized carrier group and the unlicensed carrier group.

It should be noted that the information that is transmitted on the unlicensed carrier may include a channel and a signal, where the channel may include a PUCCH, a PUSCH, a PRACH (Physical Random Access Channel), and the like, and the signal may include a DMRS (solution) Adjust the reference signal), SRS signal, and so on. It should be understood by those skilled in the art that the transmission channel referred to in the present application refers to carrying specific information through a channel. For example, transmitting a PUCCH can be understood as carrying (specific) information over a PUCCH channel.

It should be noted that the foregoing series of parameters for power control (eg, RE-based PSD, RB-based PSD, etc.) may be configured by a base station; (based on parameters), the execution subject of power control may be a UE ( User Equipment, User Equipment).

Through the above steps, the effective control of the unlicensed carrier power is realized, and the problem that the power of the unlicensed carrier cannot be effectively controlled in the related art is solved, and the power based on the PSD that fills all the REs in the unit RB is avoided. The power waste caused by the control reduces the interference caused by the excessive power transmission, and effectively reduces the energy consumption of the transmitting end.

The power control is based on the power spectral density PSD based on the resource unit RE. The present application provides the following alternative embodiments.

In an alternative embodiment, the parameter P _{O,c_RB_RE} (j) is introduced, which represents the PSD of the number of valid REs in the unit RB. In this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _c (i))+P _{O,c_RB_RE} (j)+X _c (i)}

Where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i ) indicates the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) indicates the number of RBs scheduled for the i-th subframe on the unlicensed carrier with index c, P _{O, c_RB_RE} (j) PSD indicating the number of valid REs in the unit RB, j ∈ {0, 1, 2}, PL _c represents the path loss compensation on the unlicensed carrier with index c, and TF _c (i) represents the unlicensed carrier with index c The modulation and coding format of the transmission data of the i-th subframe, f _c (i) represents the integrated value of the power adjustment amount of the i-th subframe on the unlicensed carrier with index c or the i-th subframe on the unlicensed carrier with index c The absolute power adjustment amount.

Wherein, j=0 may be preset to indicate a semi-persistent scheduling service state, j=1 represents a dynamic scheduling service state, and j=2 represents a random access state. It should be noted that the mapping relationship between the j and the service access type may be set by a person skilled in the art according to actual requirements, which is not specifically limited in this application.

This embodiment considers that the transmitter on the unlicensed carrier needs to satisfy the 80% bandwidth resource occupying the system bandwidth or the nominal bandwidth when transmitting, but sometimes the RE does not map the full RE in the unit RB at the time of transmission. Proposed solution. For example, when a comb structure is uniformly dispersed in a bandwidth resource with a span of 80% or more, the RE is not mapped in the unit RB at the time of transmission. With this embodiment, it is avoided that the power consumption of the LTE/LTE-A existing RB-based PSD is still adopted when the RE is not mapped in the unit RB, and the power consumption due to the excessive power is reduced. The interference caused, while reducing the energy consumption of the transmitter.

In another optional embodiment, the parameter PSD _{c_RB_RE} (i) is introduced, and the PSD _{c_RB_RE} (i) represents the PSD of the number of valid REs in the i-th subframe unit RB on the unlicensed carrier with index c, then in this implementation In an example, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _c (i))+PSD _{c_RB_RE} (i)+PL _c }

Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier with index c, and PSD _{c_RB_RE} (i) represents the PSD of the number of valid REs in the unit RB of the i-th subframe on the unlicensed carrier with index c. PL _c represents the path loss compensation on the unlicensed carrier with index c.

This embodiment considers that the transmitter on the unlicensed carrier needs to satisfy the 80% bandwidth resource occupying the system bandwidth or the nominal bandwidth when transmitting, however, sometimes the RE does not have a full mapping problem in the unit RB at the time of transmission. And the proposed solution. For example, when a comb structure is uniformly dispersed in a bandwidth resource having a span of 80% or more, the transmitting end The RE in the unit RB is not mapped full at the time of transmission.

With this embodiment, it is avoided that the power consumption of the LTE/LTE-A existing RB-based PSD is still adopted when the RE is not mapped in the unit RB, and the power consumption due to the excessive power is reduced. The interference caused, while reducing the energy consumption of the transmitter.

The power control is performed according to the PSD of the unit RE, and the present application provides the following alternative embodiments.

In an alternative embodiment, the parameter P _{O,c_RE} (j) is introduced, which represents the PSD of the RE. In this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_RE} (i))+P _{O,c_RE} (j)+X _c (i)}

Where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i ) indicates the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _{c_RE} (i) indicates the number of REs scheduled for the i-th subframe on the unlicensed carrier with index c, P _{O, c_RE} (j) represents the RE-based PSD, PL _c denotes the index of the path loss compensation unlicensed carrier c, TF _c (i) denotes an index of modulation and coding format for the transmission data of the first carrier c unauthorized subframes i, f _c (i) an integrated value of the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c or an absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

This embodiment considers that the transmitter on the unlicensed carrier needs to satisfy the 80% bandwidth resource occupying the system bandwidth or the nominal bandwidth when transmitting, but sometimes the RE does not map the full RE in the unit RB at the time of transmission. Proposed solution. For example, when a comb structure is uniformly dispersed in a bandwidth resource with a span of 80% or more, the RE is not mapped in the unit RB at the time of transmission.

With this embodiment, it is avoided that the power consumption of the LTE/LTE-A existing RB-based PSD is still adopted when the RE is not mapped in the unit RB, and the power consumption due to the excessive power is reduced. The interference caused, while reducing the energy consumption of the transmitter.

In another alternative embodiment, the parameter PSD _{c_RE} (i) is introduced. In this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_RE} (i))+PSD _{c_RE} (i)+PL _c }

Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, M _{c_RE} (i) indicates the number of REs scheduled in the i-th subframe on the unlicensed carrier with index c, PSD _{c_RE} (i) indicates the RE-based PSD of the i-th subframe on the unlicensed carrier with index c, and PL _c indicates that the index is Path loss compensation on the unlicensed carrier of c.

With this embodiment, it is avoided that the power consumption of the LTE/LTE-A existing RB-based PSD is still adopted when the RE is not mapped in the unit RB, and the power consumption due to the excessive power is reduced. The interference caused, while reducing the energy consumption of the transmitter.

The power control is performed according to the PSD of the total RE, and the present application provides the following alternative embodiments.

In an alternative embodiment, the parameter P _{c, Total_RE} (j) is introduced, which represents the power of the total RE. In this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),P _{c,Total_RE} (j)+X _c (i)}

Where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i ) indicates the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, Pc _{, Total_RE} (j) indicates the power of the total RE, j ∈ {0, 1, 2}, and PL _c indicates that the index is c The path loss compensation on the unlicensed carrier, TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier with index c, and f _c (i) represents the unlicensed carrier with index c The cumulative value of the power adjustment amount of the i subframes or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

This embodiment considers that the transmitter on the unlicensed carrier needs to satisfy the 80% bandwidth resource occupying the system bandwidth or the nominal bandwidth when transmitting, but sometimes the RE does not map the full RE in the unit RB at the time of transmission. Proposed solution. For example, when a comb structure is uniformly dispersed in a bandwidth resource with a span of 80% or more, the RE is not mapped in the unit RB at the time of transmission.

With this embodiment, it is avoided that the power consumption of the LTE/LTE-A existing RB-based PSD is still adopted when the RE is not mapped in the unit RB, and the power consumption due to the excessive power is reduced. The interference caused, while reducing the energy consumption of the transmitter.

The RB-based PSD is adjusted in the frequency domain and power control is performed based on the adjusted PSD. The present application provides the following alternative embodiments.

In an alternative embodiment, a parameter K is introduced, the parameter K representing the reciprocal of the comb factor or the number of combed REs in a unit RB as a percentage of the total number of REs in the frequency domain within the unit RB. Then in this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (K*M _c (i))+P _O,c (j)+X _c (i)}

Where X _c (i)=PL _c +TF _c (i)+f _c (i), 0≤K≤1, P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) represents the number of RBs scheduled for the i-th subframe on the unlicensed carrier with index c, K Representing the reciprocal of the comb factor or the number of comb REs in the unit RB as a percentage of the total number of REs in the frequency domain within the unit RB, P _O,c (j) representing the PSD based on the RB, j ∈ {0, 1, 2}, _c PL represents path loss compensation on the index unlicensed carrier c, TF _c (i) denotes an index of modulation and coding format of the transmitted data c unauthorized carriers of the first subframe i, f _c (i) represents the index of The cumulative value of the power adjustment amount of the i-th subframe on the unlicensed carrier of c or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

This embodiment considers that the transmitter on the unlicensed carrier needs to satisfy the 80% bandwidth resource occupying the system bandwidth or the nominal bandwidth when transmitting, however, sometimes the RE does not have a full mapping problem in the unit RB at the time of transmission. And the proposed solution. For example, when a comb structure is uniformly dispersed in a bandwidth resource with a span of 80% or more, the RE is not mapped in the unit RB at the time of transmission.

With this embodiment, it is avoided that the LTE/LTE-A is still used in the case where the RE is not mapped in the unit RB. The power waste caused by the RB-based PSD reduces the interference caused by the excessive power transmission and reduces the energy consumption of the transmitting end.

In another alternative embodiment, a parameter K is introduced, indicating the reciprocal of the comb factor or the number of comb REs in the unit RB as a percentage of the total number of REs in the frequency domain within the unit RB. Then in this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (K*M _c (i))+PSD _c (i)+PL _c }

Where 0 ≤ K ≤ 1, P _c (i) represents the power of the ith subframe on the unlicensed carrier with index c, and P _CMAX,c (i) indicates that the ith subframe is allowed on the unlicensed carrier with index c The maximum transmit power, M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier indexed by c, K represents the reciprocal of the comb factor or the number of comb-like REs in the unit RB accounts for the total frequency in the unit RB The percentage of the number of REs, PSD _c (i) represents the RB-based PSD of the ith subframe on the unlicensed carrier with index c, and PL _c represents the path loss compensation (path loss) on the unlicensed carrier with index c.

This embodiment considers that the transmitter on the unlicensed carrier needs to satisfy the 80% bandwidth resource occupying the system bandwidth or the nominal bandwidth when transmitting, however, sometimes the RE does not have a full mapping problem in the unit RB at the time of transmission. And the proposed solution. For example, when a comb structure is uniformly dispersed in a bandwidth resource with a span of 80% or more, the RE is not mapped in the unit RB at the time of transmission.

With this embodiment, it is avoided that the power consumption of the LTE/LTE-A existing RB-based PSD is still adopted when the RE is not mapped in the unit RB, and the power consumption due to the excessive power is reduced. The interference caused, while reducing the energy consumption of the transmitter.

The RB-based PSD is adjusted in the time domain and power control is performed based on the adjusted PSD. The present application provides the following optional embodiments.

In an optional embodiment, a parameter L is introduced, where L represents the percentage of the number of OFDM symbols preempted within the unit RB as a percentage of the total number of OFDM symbols in the time direction within the unit RB. In this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

_{P c (i) = min {} P CMAX, c (i), 10log 10 (L * M c (i)) + P O, c (j) + X c (i)}

Where X _c (i)=PL _c +TF _c (i)+f _c (i), 0≤L≤1, P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) represents the number of RBs scheduled for the i-th subframe on the unlicensed carrier with index c, L Indicates that the number of orthogonal frequency division multiplexing OFDM symbols preempted in the unit RB is a percentage of the total number of OFDM symbols in the time domain of the unit RB, and P _O,c (j) represents the PSD based on the RB, j ∈ {0, 1, 2}, PL _c represents the path loss compensation on the unlicensed carrier with index c, and TF _c (i) represents the modulation and coding format of the transmitted data of the ith subframe on the unlicensed carrier with index c, f _c (i) The cumulative value of the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

In this embodiment, it is considered that the CCA of the unlicensed carrier may be successful at any position within the subframe, and the original system power adjustment is for the entire subframe, so there may be a problem of partial subframe power adjustment, and the proposed solution . For example, the needle For an unlicensed carrier, one subframe is 1 ms. Assuming that the listening is successful at 0.5 ms, the transmitting end transmits 0.5 ms to 1 ms, which is the case of a partial subframe. If the transmission is performed at 0-1 ms, it is the case of a complete subframe. For the case of partial subframes, the existing power control system for the licensed carrier cannot implement the control of the unlicensed carrier in this case.

With this embodiment, the problem of partial subframe power adjustment is solved, power waste is reduced, and interference due to excessive power is transmitted, and energy consumption at the transmitting end is reduced.

In another optional embodiment, the parameter L is introduced, where L represents the percentage of the total number of OFDM symbols in the unit RB within the unit RB. Then in this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (L*M _c (i))+PSD _c (i)+PL _c }

Where 0 ≤ L ≤ 1, P _c (i) represents the power of the ith subframe on the unlicensed carrier with index c, and P _CMAX,c (i) indicates that the ith subframe is allowed on the unlicensed carrier with index c Maximum transmit power, M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier with index c, L represents the number of OFDM symbols preempted in the unit RB, and the total number of OFDM symbols in the time domain in the unit RB Percentage, PSD _c (i) indicates that the i-th subframe on the unlicensed carrier with index c is based on the PSD of the RB, and PL _c represents the path loss compensation on the unlicensed carrier with index c.

In this embodiment, it is considered that the CCA of the unlicensed carrier may be successful at any position within the subframe, and the original system power adjustment is for the entire subframe, so there may be a problem of partial subframe power adjustment, and the proposed solution . With this embodiment, the problem of partial subframe power adjustment is solved, power waste is reduced, and interference due to excessive power is transmitted, and energy consumption at the transmitting end is reduced.

For the foregoing embodiment, the power control parameters of the unlicensed carrier may adopt two sets of power control parameters (a first preset control parameter set and a second preset control parameter set) configured on the network side.

For the first PSD definition, the network side configures P1 _{O, c} (j) and P2 _{O, c} (j). Where P1 _O,c (j) represents the PSD of the i-th subframe on the unlicensed carrier whose index is c in the case where the unit RB fills all the time-frequency two-dimensional REs, or in the case of the complete subframe. P2 _O,c (j) denotes the PSD of the i-th subframe on the unlicensed carrier whose index is c when the intra-unit RB does not occupy all REs in the frequency domain or in the case of partial subframes.

For the second PSD definition, the network side configures PSD1 _c (i) and PSD2 _c (i). The PSD1 _c (i) indicates the PSD of the i-th subframe on the unlicensed carrier whose index is c in the case where the unit RB fills all the time-frequency two-dimensional REs, or the complete subframe, and the PSD2 _c (i) indicates the PSD of the i-th subframe on the unlicensed carrier whose index is c when the intra-unit RB does not occupy all the REs in the frequency domain or in the case of the partial subframe.

It should be noted that the first PSD definition and the second PSD definition described in the present application are as follows:

For the first PSD definition, the power control sub-item that does not participate in the direct adjustment is uniformly recorded as X _c (i)=PL _c +TF _c (i)+f _c (i), which is abbreviated as: P _c (i )=min{P _CMAX,c (i),10log ₁₀ (M _c (i))+P _O,c (j)+X _c (i)}, there is no PSD _c (i) in the formula, but P _O,c (j) directly refers to PSD _c (i).

For the second PSD definition, the power spectral density is uniformly recorded as PSD _c (i)=P _O,c (j)+TF _c (i)+f _c (i), which is abbreviated as: P _c (i)= Min{P _CMAX,c (i),10log ₁₀ (M _c (i))+PSD _c (i)+PL _c }, in which PSD _c (i) is present.

It should be noted that there is no special description in the present application, as long as PSD _c (i) appears to refer to the second PSD definition, and P _O,c (j) is directly used for the first PSD definition.

It should be noted that the two sets of power control parameters described in the present application are respectively directed to: Case 1, the unit RB fills all time-frequency two-dimensional REs (that is, all the time-domains and frequency domains in the unit RBs) Case of RE) or the case where the transmitting end transmits a complete subframe; Case 2: The internal frequency of the unit RB does not occupy all the REs (that is, the case where all the REs are not occupied in the frequency domain of the unit RB) or at the transmitting end The case of transmitting a partial subframe. The preset control parameter set for each case may include related power control parameters such as P _{O, c} (j), PL _c , TF _c (i), and f _c (i).

In this embodiment, two sets of power control parameters are set, one set for a complete subframe and one set for a partial subframe, which can effectively implement power control for different situations.

The power control is performed based on the PSD of the actual data and the PSD of the occupied signal. The present application provides the following alternative embodiments.

In an alternative embodiment, parameters M _{c_DATA} (i), P _{O, c_DATA} (j), M _{c_OS} (i), and P _{O, c_OS} (j) are introduced. Where M _{c_DATA} (i) represents the number of RBs occupied by the actual data in the i-th subframe on the unlicensed carrier with index c, P _{O,c_DATA} (j) represents the PSD of the actual data, and M _{c_OS} (i) indicates that the index is The i-th subframe on the unlicensed carrier of c occupies the number of RBs occupied by the signal, and P _{O,c_OS} (j) represents the PSD of the occupied signal. In this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_DATA} (i))+P _{O,c_DATA} (j)+10log ₁₀ (M _{c_OS} (i))+P _{O,c_OS} (j )

+X _c (i)}

Where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i ) indicates the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _{c_DATA} (i) indicates the number of RBs occupied by the actual data for the i-th subframe on the unlicensed carrier with index c, P _{O, c_DATA} (j) represents the PSD of the actual data, and M _{c_OS} (i) represents the number of RBs occupied by the occupied signal of the i-th subframe on the unlicensed carrier with index c, P _{O, c_OS} (j) represents the PSD of the occupied signal, j∈ {0,1,2}, PL _c represents the path loss compensation on the unlicensed carrier with index c, and TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier with index c, f _c (i) represents the integrated value of the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

This embodiment is a proposed solution in consideration of the regulation of 80% bandwidth resources occupying system bandwidth or nominal bandwidth when transmitting on the unlicensed carrier. For example, the actual data and the occupied signal may occupy a bandwidth resource range of 80% or more, wherein the occupied signal is mainly used to satisfy the regulation of 80% of the bandwidth resource. For example, the actual data transmitted by the transmitting end occupies 50% of the bandwidth resources. Therefore, in order to meet the control of 80% of the bandwidth resources, it is required to provide an occupied signal to occupy at least 30% of the bandwidth resources (for occupying the channel), and the receiving end receives the occupied signal. , but not (definitely) demodulate it.

In this embodiment, the occupancy signal satisfies the regulation of 80% bandwidth resources, and the power ratio occupied can be flexibly controlled by adjusting the _{sizes of} P _{O, c_DATA} (j) and P _{O, c_OS} (j). For example, if the power of the actual data has met the CCA detection threshold requirement, the PSD of the occupied signal can be as low as possible, thereby reducing power waste, reducing interference caused by transmitting too high power, and reducing energy consumption at the transmitting end.

In another alternative embodiment, the power of the ith subframe on the unlicensed carrier indexed c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_DATA} (i))+PSD _{c_DATA} (i)+10log ₁₀ (M _{c_OS} (i))+PSD _{c_OS} (i)

+PL _c }

Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, M _{C_DATA} (i) indicates the number of RBs occupied by the actual data in the i-th subframe on the unlicensed carrier with index c, and PSD _{c_DATA} (i) indicates the PSD of the actual data of the i-th subframe on the unlicensed carrier with index c, M _{c_OS} (i) indicates the number of RBs occupied by the occupied signal of the i-th subframe on the unlicensed carrier whose index is c, and PSD _{c_OS} (i) indicates the PSD of the occupied signal of the i-th subframe on the unlicensed carrier with index c, PL _c Indicates path loss compensation on an unlicensed carrier with index c.

In this embodiment, the occupancy signal satisfies the regulation of 80% bandwidth resources, and the power ratio occupied can be flexibly controlled by adjusting the _{sizes of} P _{O, c_DATA} (j) and P _{O, c_OS} (j). For example, if the power of the actual data has met the CCA detection threshold requirement, the PSD of the occupied signal can be as low as possible, thereby reducing power waste, reducing interference caused by transmitting too high power, and reducing energy consumption at the transmitting end.

Power control is performed based on the power offset, and the present application provides the following alternative embodiments.

In an alternative embodiment, the parameters P _OFFSET,c (i), P _OFFSET,c (i) are introduced to represent the offset of the ith subframe on the unlicensed carrier with index c. Then in this embodiment, the power of the i-th subframe on the unlicensed carrier with index c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),P _OFFSET,c (i)+10log ₁₀ (M _c (i))+P _O,c (j)+X _c (i)}

Where X _c (i)=PL _c +TF _c (i)+f _c (i), P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, P _CMAX,c (i ) indicates the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, and M _c (i) indicates the number of RBs scheduled for the i-th subframe on the unlicensed carrier with index c, P _O,c (j) Representing RB-based PSD, j ∈ {0, 1, 2}, P _{OFFSET, c} (i) represents the power offset of the ith subframe on the unlicensed carrier with index c, and PL _c represents the non-index of c The path loss compensation on the authorized carrier, TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier with index c, and f _c (i) represents the i-th on the unlicensed carrier with index c The cumulative value of the power adjustment amount of one subframe or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c.

The power offset is an offset of the power of the unlicensed carrier relative to the power calculated by the licensed carrier (ie, a modified value of the unlicensed carrier relative to the authorized carrier). The unlicensed carrier performs power calculation according to the method (equation) of the licensed carrier, and the obtained power value is different from the actual power value of the unlicensed carrier, and the difference is the above-mentioned power offset. By analyzing the law of the power offset, the relationship between the power offset and the calculated power (calculated by the unlicensed carrier in the authorized carrier mode) can be known, and the unweighted carrier can be adjusted by adjusting the power offset. The power is controlled.

This embodiment is a regulation that takes into account 80% of the bandwidth resources occupying the system bandwidth or the nominal bandwidth when transmitting on the unlicensed carrier. For example, the actual data and the occupied signal may occupy a bandwidth resource range of 80% or more, wherein the occupied signal is mainly used to satisfy the regulation of 80% of the bandwidth resource. However, at this time, if power control is still performed based on the PSD that fills all REs within the unit RB, power waste will result. Based on this, the present application proposes this embodiment.

In this embodiment, by introducing the parameters P _OFFSET,c (i) (small changes to the existing system), it is avoided that the LTE/LTE-A is still used in the case where the RE is not mapped in the unit RB. The power waste caused by the RB-based PSD reduces the interference caused by the excessive power transmission and reduces the energy consumption of the transmitting end.

In another alternative embodiment, the power of the ith subframe on the unlicensed carrier indexed c can be calculated by the following formula:

P _c (i)=min{P _CMAX,c (i),P _OFFSET,c (i)+10log ₁₀ (M _c (i))+PSD _c (i)+PL _c }

Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier with index c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier with index c, M _c (i) represents the number of RBs scheduled for the ith subframe on the unlicensed carrier with index c, P _OFFSET,c (i) represents the offset of the ith subframe on the unlicensed carrier with index c, PSD _c ( i) denotes a first index i c unlicensed carriers of subframes based RB PSD, PL _c denotes the index of the path loss compensation unlicensed carrier c.

In this embodiment, by introducing the parameters P _OFFSET,c (i) (small changes to the existing system), it is avoided that the LTE/LTE-A is still used in the case where the RE is not mapped in the unit RB. The power waste caused by the RB-based PSD reduces the interference caused by the excessive power transmission and reduces the energy consumption of the transmitting end.

The power control is performed by adaptively adjusting or semi-statically adjusting the idle channel evaluation CCA detection threshold. The present application provides the following alternative embodiments.

In an optional embodiment, the power control may be performed by adjusting the CSA detection threshold by adaptive adjustment or semi-static adjustment. Specifically, the power may be calculated according to the CCA detection threshold.

The existing LAA technology in LTE/LTE-A includes two Scenarios when defining the CCA detection threshold:

Scenario1: LAA does not coexist with other competing technologies. Then the CCA detection threshold TH value can be expressed by the following formula:

TH1=min(X,Y)

Among them, you can simply think that the Y of the regulatory definition is not considered first.

TH1=-75dBm/MHz+10*log10(BWMHz)+10dB

Table 1 provides the CCA detection threshold TH value (TH1) when the LAA does not coexist with other competing technologies.

Table 1

5MHz 10MHz 15MHz 20MHz TH1 -58dBm -55dBm -53.2dBm -52dBm

Scenario2: LAA and other competing technologies coexist. Then

TH2=max(-72dBm(20MHz),min(T _max ,T _max -10dB+(P _H -P _TX )))

Where T _max = -75 dBm / MHz + 10 * log 10 (BWMHz), P _H = 23 dBm.

Table 2 provides the CCA detection threshold TH value (TH2) when LAA and other competing technologies coexist.

Table 2

As can be seen from Table 2, when 13 = <PTX <= Z, where Z = {17, 20, 21, 23}, adjusting the CCA detection threshold is equivalent to indirectly adjusting the power. Therefore, the present application performs power control through the CCA detection threshold, and the purpose of effectively controlling the unlicensed carrier power can be achieved.

It should be noted that, in the above optional embodiments, the power control is achieved by introducing parameters. However, those skilled in the art should understand that the present application is not limited to power control by introducing parameters, and includes P _O,c in the original LTE/LTE-A system without introducing parameters. PL _c , TF _c , f _c (P _{O, c} denotes RB-based PSD, PL _c denotes path loss compensation on an unlicensed carrier with index c, and TF _c denotes modulation of transmitted data on an unlicensed carrier with index c The coding format, f _c represents the range of the cumulative value of the power adjustment amount of the unlicensed carrier whose index is c or the absolute power adjustment amount of the unlicensed carrier whose index is c, and includes adjustments such as range expansion or range reduction, The scope of specific adjustments are not listed one by one.

According to an embodiment of the present invention, the following power reduction control method is also provided.

In an optional embodiment, the transmitter estimates that power reduction is required, considering that the total calculated power of the scheduled authorized carrier and the scheduled unlicensed carrier exceeds the maximum linear power that the PA can support. The CCA detection of unlicensed carriers has the problem of the possibility of failure, and the solution is proposed.

In this alternative embodiment, it is assumed that the total calculated power of the scheduled authorized carriers CC1, CC2 and the scheduled unlicensed carriers CC3, CC4 has exceeded the maximum linear power that the PA can support. Need power Cut down. Assuming that the CCA detection of CC3 is successful and the CCA detection of CC4 fails, the following power reduction formulas can be used when CC1, CC2, CC3, and CC4 need to perform power reduction:

Where c={CC1, CC2, CC3, CC4}, w(i) is a power reduction factor that is consistently adopted for all carriers when power reduction is required regardless of whether the unlicensed carrier CCA is successfully detected, and A is A1-( A2+A3), A1 represents the maximum power allowed by the transmitting end, A2 represents the power of the PUCCH, and A3 represents the power of the PUSCH including the UCI.

It should be noted that, in this embodiment, regardless of whether the unlicensed carrier CCA detection is successful, all carriers always adopt a unified power reduction factor w(i) when power reduction is required.

This embodiment is compatible with the original LTE/LTE-A system, and does not introduce more power reduction factors, and can effectively implement power reduction control.

In another optional embodiment, considering that the total calculated power of the scheduled authorized carrier and the scheduled unlicensed carrier exceeds the maximum linear power that the PA can support, the transmitting end estimates that power reduction is required. However, the CCA detection of unlicensed carriers has the problem of the possibility of failure, and the solution is proposed.

In this alternative embodiment, it is assumed that the total calculated power of the scheduled authorized carriers CC1, CC2 and the scheduled unlicensed carriers CC3, CC4 has exceeded the maximum linear power that the PA can support. Power reduction. Assuming that the CCA detection of both CC3 and CC4 is successful, the following power reduction formulas can be used when CC1, CC2, CC3, and CC4 need to be power-reduced:

Where c={CC1, CC2, CC3, CC4}, w(i) is the power reduction factor valid for all scheduled authorized carriers and all scheduled unlicensed carriers, and A represents the maximum power allowed by the transmitter minus the PUCCH Power and power of the PUSCH containing UCI.

Assuming that the CCA detection of CC3 is successful and the CCA detection of CC4 fails, the following power reduction formulas can be used when CC1, CC2, CC3, and CC4 need to perform power reduction:

Where c={CC1, CC2, CC3}, w'(i) is the power reduction factor valid for all scheduled authorized carriers and all unlicensed carriers scheduled to be successfully detected by CCA, and A represents the maximum power allowed by the transmitting end. The PUCCH power and the power of the PUSCH including the UCI are subtracted.

In this embodiment, the power reduction control is successfully performed according to the CCA of the unlicensed carrier, and the effectiveness of the power reduction is improved.

In another optional embodiment, considering that the total calculated power of the scheduled authorized carrier and the scheduled unlicensed carrier exceeds the maximum linear power that the PA can support, the transmitting end estimates that power reduction is required. However, the CCA detection of unlicensed carriers has the problem of the possibility of failure, and the solution is proposed.

In this alternative embodiment, it is assumed that the total calculated power of the scheduled authorized carriers CC1, CC2 and the scheduled unlicensed carriers CC3, CC4 has exceeded the maximum linear power that the PA can support. Power reduction is required. Assuming that the CCAs of CC3 and CC4 are successfully detected, the following authorized carrier power reduction formulas can be used when CC1, CC2, CC3, and CC4 need to perform power reduction:

Where c={CC1, CC2}, the power reduction factor w _license (i) is valid for all scheduled authorized carriers, and A represents the maximum power allowed by the transmitting end minus the PUCCH power and the power of the PUSCH including the UCI.

Assuming that the CCAs of CC3 and CC4 are successfully detected, the following unlicensed carrier power reduction formulas can be used when CC1, CC2, CC3, and CC4 need to perform power reduction:

Where c={CC3, CC4}, the power reduction factor w _unlicense (i) is valid for all unlicensed carriers that are scheduled and successfully detected by CCA, and A represents the maximum power allowed by the transmitting end minus the PUCCH power and the PUSCH including the UCI. power.

In this embodiment, the licensed carrier and the unlicensed carrier use different power reduction factors, which improves the effectiveness of power reduction.

It should be noted that the above-mentioned w _license (i) and w _unlicense (i) are also applicable to the authorized carrier group and the unlicensed carrier group respectively, that is, the authorized carrier group can be controlled to use w _license (i), and the unlicensed carrier group. Use w _unlicense (i), which is not _mentioned here.

In the following, according to an embodiment of the present invention, a method of performing power control using priority is also provided.

In an alternative embodiment, the following problems are considered: (1) Since the UL PCC (Authorized Carrier) is used not only for data transmission but also for link maintenance, the communication quality of the PCC is guaranteed; (2) The UL UC (Uplink Unlicensed Carrier) requires the eNB to authorize the scheduling, and the physical resources are actually present when the UE side competes successfully. If the UL UC fails frequently, the target of increasing the throughput cannot be achieved. Therefore, the communication quality of the UL UC is also To be guaranteed to a certain extent. It can be seen from the above analysis that the priority cannot be defined by a certain carrier type, and other priority mechanisms need to be considered, so that power control is performed according to the priority.

In this alternative embodiment, the priority of the carrier type and/or channel type may be determined in a manner that is displayed (ie, in a signaling manner). The carrier type refers to an authorized carrier and an unlicensed carrier, and the channel type refers to an authorized carrier and a specific channel on the unlicensed carrier.

In this embodiment, the network side can directly notify the carrier type of priority and/or information in a dynamic or semi-static manner. The priority of the track type. Specifically, it is assumed that the scheduled authorized carriers are CC1, CC2, and the scheduled unlicensed carriers are CC3 and CC4, and the network side directly informs the carrier type priority and/or the channel type priority through the dynamic/semi-static manner. For example, the network side uses the displayed signaling to notify CC1, CC2, CC3, and CC4 that the priority order is 1, 2, 3, and 4 from high to low, and the signaling shows that CC1 has the highest priority and CC4 has the lowest priority. , CC2, CC3 have medium priority. For example, the network side uses the displayed signaling to notify that the PUCCH on the CC1 has the highest priority, the PUSCH carrying the UCI on the CC2 has the medium priority, and the PUSCH carrying the UCI on the CC3 has the medium priority, and the CC4 does not carry. The PUSCH of the UCI has the lowest priority.

In this embodiment, the UE side may request to increase or decrease the priority of the carrier type and/or the priority of the channel type. Specifically, if the scheduled authorized carriers are CC1, CC2, and the scheduled unlicensed carriers are CC3 and CC4, the UE side may request to increase/decrease carrier type priority and/or channel type priority. For example, if the UE side requests to increase the priority of the CC3, the UE feeds back to the network side, and the network side is required to raise the priority of the CC3. For example, if the UE side needs to increase the priority of the USCH carrying the UCI on the CC4, the UE feeds back to the network side, and the network side is required to raise the priority of the USCH carrying the UCI on the CC4.

With this embodiment, the priority of the carrier type and/or the priority of the channel type are determined in a manner directly notified by the network side or actively requested by the UE side, and the flexibility of adjusting the carrier type priority or the channel type priority is improved.

In another optional embodiment, the priority of the carrier type and/or the priority of the channel type may also be determined by using the system default mode (that is, the transmitting end and the receiving end according to a predetermined manner or rule). You can switch between the way and the system default mode). The carrier type refers to an authorized carrier and an unlicensed carrier, and the channel type refers to an authorized carrier and a specific channel on the unlicensed carrier.

In this embodiment, a pre-set carrier type priority list can be configured in the system. It is assumed that the scheduled authorized carriers are CC1, CC2, and the scheduled unlicensed carriers are CC3 and CC4, where CC1 is the primary carrier, and CC2, CC3, and CC4 are the secondary carriers. For example, the system default priority order can be set to CC1 with the highest priority, CC2 with medium priority, and CC3 and CC4 with the lowest priority. For another example, the system default priority order can be set such that CC1 has the highest priority, CC2 has the lowest priority, and CC3 and CC4 have the medium priority.

In this embodiment, a pre-set channel type priority list can be configured in the system. It is assumed that the scheduled authorized carriers are CC1, CC2, and the scheduled unlicensed carriers are CC3 and CC4, where CC1 carries the PUCCH, CC2 carries the PUSCH of the UCI, CC3 carries the PUSCH of the UCI, and CC4 does not carry the PUSCH of the UCI. For example, the system may not set CC1, CC2, CC3, and CC4, and the default channel type priorities are: CC1 carries the PUCCH with the highest priority, CC2 carries the UCI PUSCH, and CC3 carries the UCI PUSCH with medium priority, CC4 does not. The PUSCH carrying the UCI has the lowest priority.

It should be noted that the foregoing preset carrier type priority list or channel type priority list may be specified or set by the user according to actual conditions.

In this embodiment, the carrier type priority or the channel type priority is determined according to the system default manner, and only the carrier type priority or the channel type priority needs to be specified in advance, thereby effectively avoiding signaling overhead.

It should be noted that the idea of performing power control by using the priority may be applied to the specific implementation of any of the foregoing optional embodiments. Specifically, the power control policy may be combined with any of the following optional power control policies: Power control based on RE-based PSD; adjustment of RB-based PSD, and power control according to adjusted PSD; power control according to PSD of actual data and PSD of occupied signal; power control according to power offset; Adaptively adjusting or semi-statically adjusting the CCA detection threshold for power control; performing power control by adjusting a value range of at least one parameter related to power control; controlling power reduction of the licensed carrier and the unlicensed carrier, or controlling the authorized carrier group and The power of the unlicensed carrier group is reduced and power control is performed.

The above-described power control method using priority is particularly applicable to a corresponding power control of a base station (or a cell, or an access node) in an unlicensed carrier. Through the above real-time example, the power adjustment of the unlicensed carrier can be well realized, the power waste is effectively avoided, the interference caused by the excessively high power is reduced, and the energy consumption of the transmitting end can be reduced.

It should be noted that, in the above optional embodiment, the power is added by the logarithm value, and the linear value is the multiplication operation, however, those skilled in the art should understand that the two numerical operations are equivalent. .

It should be noted that the above-described alternative embodiments of P _{O, c (j),} may refer applied to the PUSCH P _{O_PUSCH, c (j),} is applied to the PUCCH, or refers P _{O_PUCCH, c (j),} Or refer to P _{O_PUSCH,c} (j) applied to SRS. More specifically,

P _{O_PUSCH,c} (j)=P _{O_NOMINAL_PUSCH,c} (j)+P _{O_UE_PUSCH,c} (j)

P _{O_PUCCH,c} (j)=P _{O_NOMINAL_PUCCH,c} (j)+P _{O_UE_PUCCH,c} (j)

Wherein, P _{O_NOMINAL_PUSCH,c} (j), P _{O_NOMINAL_PUCCH,c} (j) respectively represent PSD/SINR for PUSCH or PUCCH, that is, represent the minimum requirement of the cell at this time, P _{O_UE_PUSCH,c} (j), P _{O_UE_PUCCH,c} (j) Represents the PSD/SINR for the PUSCH or PUCCH, respectively, that is, the UE-specific demand at this time. The adjustment of the parameters P _O,c (j) of the present invention covers all the parameters referred to by P _O,c (j), which are not enumerated in this application.

It should be noted that, in the above optional embodiment, the power reduction is a power reduction of the PUSCH that does not include UCI.

It should be noted that although the present application is described as being applied to power control of an unlicensed carrier, those skilled in the art should understand that if the authorized carrier of the existing system adopts a discretization manner, it can also be applied to the present application. A power control method (or equation or corresponding variant) applied to an unlicensed carrier.

It is to be understood that the invention may be susceptible to various other modifications and changes in the embodiments of the present invention without departing from the spirit and scope of the invention. These respective changes and modifications are intended to fall within the scope of the appended claims.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM, including a number of instructions to make a terminal device (can be a mobile phone, a computer, The server, or network device, etc.) performs the methods described in various embodiments of the present invention.

In the present embodiment, a power control device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "unit" or "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

2 is a schematic diagram of a power control apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes a determining unit 20 and a control unit 22.

Determining unit 20, configured to determine to transmit information on an unlicensed carrier;

The control unit 22 is configured to perform power control on the unlicensed carrier by at least one of: performing power control according to the power spectral density PSD based on the resource unit RE; adjusting the PSD based on the resource block RB, and according to the adjusted PSD Perform power control; perform power control according to the PSD of the actual data and the PSD of the occupied signal, wherein the actual data is data actually transmitted by the transmitting end, and the occupied signal is a signal for occupying the channel; and power control is performed according to the power offset, wherein The power offset is a power offset of the unlicensed carrier relative to the authorized carrier; the power control is performed by adaptively adjusting or semi-statically adjusting the idle channel to evaluate the CCA detection threshold; and adjusting the value of at least one parameter related to the power control The range performs power control; power control is performed by controlling power reduction of the licensed carrier and the unlicensed carrier, or controlling power reduction of the authorized carrier group and the unlicensed carrier group.

In this embodiment, the determining unit 20 determines to transmit information on the unlicensed carrier; the control unit 22 performs power control according to the RE-based PSD, adjusts the resource block RB-based PSD, and performs power control according to the adjusted PSD, according to actual conditions. The PSD of the data and the PSD occupying the signal perform power control, perform power control according to the power offset, perform power control through adaptive adjustment or semi-static adjustment of the CCA detection threshold, and adjust the value range of at least one parameter related to the power control Power control is performed or power control is performed by controlling power reduction of the licensed carrier and the unlicensed carrier (or controlling power reduction of the authorized carrier group and the unlicensed carrier group), thereby realizing effective control of unlicensed carrier power, and solving the related art. The problem of effective control of the power of the unlicensed carrier cannot be realized, and the power waste caused by the power control based on the PSD that fills all the REs in the unit RB is avoided, and the interference caused by the excessively high power is reduced. And effectively reduce the energy consumption of the transmitter.

It should be noted that each of the foregoing units or modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing units or modules are all located in the same processor; or Or modules are located in multiple processors.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S102. Determine to transmit information on an unlicensed carrier.

S104: Perform power control on the unlicensed carrier by using at least one of: performing power control according to a power spectral density PSD based on the resource unit RE; adjusting a PSD based on the resource block RB, and performing power control according to the adjusted PSD; Power control is performed according to the PSD of the actual data and the PSD of the occupied signal, wherein the actual data is the transmitting end The data transmitted, the occupied signal is a signal for occupying the channel; the power control is performed according to the power offset, wherein the power offset is the power offset of the unlicensed carrier relative to the authorized carrier; Statically adjusting the idle channel to evaluate the CCA detection threshold for power control; performing power control by adjusting the value range of at least one parameter related to power control; controlling power reduction of the licensed carrier and the unlicensed carrier, or controlling the authorized carrier group and the unauthorized Power reduction of the carrier group for power control.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules (units) or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across multiple computing devices. Optionally, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from this The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

The foregoing technical solutions provided by the embodiments of the present invention may be applied to a power control process, by determining that information is transmitted on an unlicensed carrier, performing power control according to the RE-based PSD, adjusting the PSD based on the resource block RB, and adjusting according to the The PSD performs power control, performs power control according to the PSD of the actual data and the PSD of the occupied signal, performs power control according to the power offset, performs power control through adaptive adjustment or semi-static adjustment of the CCA detection threshold, and adopts adjustment and power control. The value range of the at least one parameter is related to power control or power control by controlling power reduction of the licensed carrier and the unlicensed carrier (or power reduction of the control authorized carrier group and the unlicensed carrier group), and the unlicensed carrier power is realized. The effective control solves the problem that the power of the unlicensed carrier cannot be effectively controlled in the related art, and avoids the power waste caused by the power control based on the PSD that fills all the REs in the unit RB, and reduces the transmission due to the transmission. High power and interference, and effectively reduce the hair The energy consumption of the emitter.

Claims (28)

A power control method includes: Determining that information is transmitted on an unlicensed carrier; The unlicensed carrier is power controlled by at least one of the following methods: Performing power control according to the power spectral density PSD based on the resource unit RE; adjusting the PSD based on the resource block RB, and performing power control according to the adjusted PSD; performing power control according to the PSD of the actual data and the PSD of the occupied signal, wherein The actual data is data actually sent by the transmitting end, and the occupied signal is a signal for occupying a channel; and the power control is performed according to the power offset, wherein the power offset is a relative power of the unlicensed carrier. The power offset calculated by the adaptive carrier or the semi-statically adjusted idle channel evaluation CCA detection threshold; the power control is performed by adjusting the value range of at least one parameter related to the power control; Controlling power reduction of the authorized carrier and the unlicensed carrier, or controlling power reduction of the authorized carrier group and the unlicensed carrier group, and performing power control. The method of claim 1, wherein the power control according to the power spectral density PSD based on the resource unit RE comprises one of the following: Power control is performed according to the PSD of the number of valid REs in the unit RB; Power control according to the PSD of the unit RE; Power control is performed based on the PSD of the total RE. The method of claim 2, wherein the controlling the power according to the PSD of the number of valid REs in the unit RB comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _c (i))+P _{O,c_RB_RE} (j)+X _c (i)} among them, X _c (i)=PL _c +TF _c (i)+f _c (i) P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c , M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, and P _{O,c_RB_RE} (j) represents the PSD of the number of valid REs in the unit RB, j ∈ {0, 1, 2}, PL _c denotes the index is a path loss compensation on the unlicensed carrier c, TF _c (i) denotes the index modulation and coding format of the transmitted data carrier c unauthorized first subframe i, f _c (i) represents the integrated value of the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c. The method of claim 2, wherein the controlling the power according to the PSD of the number of valid REs in the unit RB comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _c (i))+PSD _{c_RB_RE} (i)+PL _c } Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum allowed of the i-th subframe on the unlicensed carrier whose index is c Transmit power, M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, and PSD _{c_RB_RE} (i) represents the unit of the i-th subframe on the unlicensed carrier whose index is c The PSD of the number of valid REs in the RB, PL _c represents the path loss compensation on the unlicensed carrier with the index c. The method of claim 2, wherein the controlling the power according to the PSD of the unit RE comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_RE} (i))+P _{O,c_RE} (j)+X _c (i)} among them, X _c (i)=PL _c +TF _c (i)+f _c (i) P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c _{Mc_RE} (i) represents the number of REs scheduled in the i-th subframe on the unlicensed carrier whose index is c, P _{O, c_RE} (j) represents the RE-based PSD, and PL _c represents the non-authorization of the index c The path loss compensation on the carrier, TF _c (i) represents the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier whose index is c, and f _c (i) represents the unlicensed carrier whose index is c The cumulative value of the power adjustment amount of the upper i-th subframe or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c. The method of claim 2, wherein the controlling the power according to the PSD of the unit RE comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_RE} (i))+PSD _{c_RE} (i)+PL _c } Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum allowed of the i-th subframe on the unlicensed carrier whose index is c Transmit power, M _{c_RE} (i) represents the number of REs scheduled in the i-th subframe on the unlicensed carrier whose index is c, and PSD _{c_RE} (i) indicates that the i-th subframe on the unlicensed carrier whose index is c is based on RE PSD, PL _c represents the path loss compensation on the unlicensed carrier with the index c. The method of claim 2 wherein power control based on the PSD of the total RE comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),P _{c,Total_RE} (j)+X _c (i)} among them, X _c (i)=PL _c +TF _c (i)+f _c (i) P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c , P _{c, Total_RE} (j) represents the power of the total RE, j ∈ {0, 1, 2}, PL _c represents the path loss compensation on the unlicensed carrier whose index is c, and TF _c (i) represents a modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier whose index is c, and f _c (i) represents the cumulative value or the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c The absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c. The method according to claim 1, wherein the adjusting the PSD based on the resource block RB and performing power control according to the adjusted PSD comprises: Adjusting the RB-based PSD in the frequency domain and performing power control based on the adjusted PSD; and/or The RB-based PSD is adjusted in the time domain and power control is performed based on the adjusted PSD. The method of claim 8, wherein adjusting the RB-based PSD in the frequency domain and performing power control based on the adjusted PSD comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (K*M _c (i))+P _O,c (j)+X _c (i)} among them, X _c (i)=PL _c +TF _c (i)+f _c (i) 0≤K≤1 P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c , M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, K represents the reciprocal of the comb factor or the number of comb-like REs in the unit RB, and the total RE in the frequency domain of the unit RB The percentage of the number, P _O,c (j) represents the RB-based PSD, j ∈ {0, 1, 2}, PL _c represents the path loss compensation on the unlicensed carrier with the index c, TF _c (i) a modulation and coding format of transmission data of an i-th subframe on an unlicensed carrier whose index is c, and f _c (i) represents an accumulated value of power adjustment amount of an i-th subframe on an unlicensed carrier whose index is c Or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c. The method according to claim 8, wherein the adjusting the RB-based PSD in the frequency domain and performing power control based on the adjusted PSD comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (K*M _c (i))+PSD _c (i)+PL _c } among them, 0≤K≤1 P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, K represents the reciprocal of the comb factor or the number of comb REs in the unit RB accounts for the total number of REs in the frequency within the unit RB Percentage, PSD _c (i) indicates that the i-th subframe on the unlicensed carrier with index c is based on the PSD of the RB, and PL _c represents the path loss compensation on the unlicensed carrier with the index c. The method according to claim 8, wherein the adjusting the RB-based PSD in the time domain and performing power control based on the adjusted PSD comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (L*M _c (i))+P _O,c (j)+X _c (i)} among them, X _c (i)=PL _c +TF _c (i)+f _c (i) 0≤L≤1 P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c , M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, and L represents the number of OFDM symbols preempted in the unit RB in the time domain of the unit RB. Percentage of the total number of OFDM symbols, P _O,c (j) represents the RB-based PSD, j ∈ {0, 1, 2}, PL _c represents the path loss compensation on the unlicensed carrier with the index c, TF _c (i) a modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier whose index is c, and f _c (i) represents the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c The cumulative value or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c. The method according to claim 8, wherein the adjusting the RB-based PSD in the time domain and performing power control based on the adjusted PSD comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (L*M _c (i))+PSD _c (i)+PL _c } among them, 0≤L≤1 P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c , M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, and L represents the percentage of the number of OFDM symbols preempted in the unit RB as a percentage of the total number of OFDM symbols in the time domain of the unit RB. PSD _c (i) indicates that the i-th subframe on the unlicensed carrier whose index is c is based on the PSD of the RB, and PL _c represents the path loss compensation on the unlicensed carrier whose index is c. The method according to claim 8, wherein the RB-based PSD is adjusted in the frequency domain, and the base is Before the adjusted PSD performs power control, and/or the RB-based PSD is adjusted in the time domain, and the power control is performed based on the adjusted PSD, the method further includes: Setting a first preset control parameter set and a second preset control parameter set, The first preset control parameter set is used in the case that all REs in the time domain and the frequency domain are occupied in the unit RB or in the case that the transmitting end transmits the complete subframe. The second preset control parameter set is used when the UE does not occupy all REs in the frequency domain of the unit RB or when the transmitting end transmits a partial subframe. The method of claim 1, wherein the power control based on the PSD of the actual data and the PSD of the occupancy signal comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_DATA} (i))+P _{O,c_DATA} (j)+10log ₁₀ (M _{c_OS} (i))+P _{O,c_OS} (j )+X _c (i)} among them, X _c (i)=PL _c +TF _c (i)+f _c (i) P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c _{Mc_DATA} (i) indicates the number of RBs occupied by the actual data in the i-th subframe on the unlicensed carrier whose index is c, P _{O,c_DATA} (j) represents the PSD of the actual data, and M _{c_OS} (i) represents The number of RBs occupied by the occupied signal of the i-th subframe on the unlicensed carrier whose index is c, P _{O, c_OS} (j) represents the PSD of the occupied signal, j ∈ {0, 1, 2}, PL _c denotes the path loss compensation on the unlicensed carrier whose index is c, and TF _c (i) denotes the modulation and coding format of the transmission data of the i-th subframe on the unlicensed carrier whose index is c, f _c (i) The cumulative value of the power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c. The method of claim 1, wherein the power control based on the PSD of the actual data and the PSD of the occupancy signal comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),10log ₁₀ (M _{c_DATA} (i))+PSD _{c_DATA} (i)+10log ₁₀ (M _{c_OS} (i))+PSD _{c_OS} (i)+PL _c } Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum allowed of the i-th subframe on the unlicensed carrier whose index is c Transmit power, M _{c_DATA} (i) represents the number of RBs occupied by the actual data in the i-th subframe of the unlicensed carrier whose index is c, and PSD _{c_DATA} (i) represents the i-th sub-carrier on the unlicensed carrier whose index is c The PSD of the frame actual data, M _{c_OS} (i) represents the number of RBs occupied by the occupied signal of the i-th subframe on the unlicensed carrier whose index is c, and the PSD _{c_OS} (i) represents the unlicensed carrier whose index is c PSD signal occupying the i-th subframe, PL _c denotes the index is a path loss compensation on the unlicensed carrier c. The method of claim 1 wherein power control based on the power offset comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),P _OFFSET,c (i)+10log ₁₀ (M _c (i))+P _O,c (j)+X _c (i)} among them, X _c (i)=PL _c +TF _c (i)+f _c (i) P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum transmit power allowed for the i-th subframe on the unlicensed carrier whose index is c , M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, and P _O,c (j) represents the RB-based PSD, j ∈ {0, 1, 2}, P _{oFFSET, c} (i) indicates that the first power offset index c unauthorized carrier i subframes, PL _c denotes the index is a path loss compensation on the unauthorized carrier c, TF _c (i) a modulation and coding format of transmission data of an i-th subframe on an unlicensed carrier whose index is c, and f _c (i) represents an accumulated value of power adjustment amount of an i-th subframe on an unlicensed carrier whose index is c Or the absolute power adjustment amount of the i-th subframe on the unlicensed carrier whose index is c. The method of claim 1 wherein power control based on the power offset comprises: The power of the i-th subframe on the unlicensed carrier with index c is calculated by the following formula: P _c (i)=min{P _CMAX,c (i),P _OFFSET,c (i)+10log ₁₀ (M _c (i))+PSD _c (i)+PL _c } Where P _c (i) represents the power of the i-th subframe on the unlicensed carrier whose index is c, and P _CMAX,c (i) represents the maximum allowed of the i-th subframe on the unlicensed carrier whose index is c Transmit power, M _c (i) represents the number of RBs scheduled in the i-th subframe on the unlicensed carrier whose index is c, and P _OFFSET,c (i) represents the i-th subframe on the unlicensed carrier whose index is c Offset, PSD _c (i) indicates that the i-th subframe on the unlicensed carrier with index c is based on the PSD of the RB, and PL _c represents the path loss compensation on the unlicensed carrier with the index c. The method of claim 1 wherein said at least one parameter related to power control comprises at least one of: P _O,c ;PL _c ;TF _c ;f _c , Wherein P _O,c denotes an RB-based PSD, PL _c denotes a path loss compensation on an unlicensed carrier with index c, and TF _c denotes a modulation and coding format of the transmitted data on the unlicensed carrier whose index is c, f _c The cumulative value of the power adjustment amount of the unlicensed carrier whose index is c or the absolute power adjustment amount of the unlicensed carrier whose index is c. The method according to claim 1, wherein the power control is performed by controlling power reduction of the authorized carrier and the unlicensed carrier, or controlling power reduction of an authorized carrier group and an unlicensed carrier group, including: Controlling the authorized carrier and the unlicensed carrier to always adopt a unified power reduction factor for power control System; or For the two cases where the unlicensed carrier CCA detection succeeds and the unlicensed carrier CCA detection fails, controlling the two cases to adopt different power reduction factors for power control; or Controlling the authorized carrier group and the unlicensed carrier group respectively adopt different power reduction factors for power control. The method according to claim 19, wherein for the two cases of the unlicensed carrier CCA detection success and the unlicensed carrier CCA detection failure, controlling the two cases to adopt different power reduction factors for power Controls include: In case the unlicensed carrier CCA detection is successful and the power reduction is required, the control adopts a first power reduction factor, wherein the first power reduction factor is applied to all scheduled authorized carriers and all scheduled unlicensed carriers. effective; In the case that the unlicensed carrier CCA detection fails and power reduction is required, the control adopts a second power reduction factor, wherein the second power reduction factor is successful for all scheduled authorized carriers, all scheduling, and CCA detection. The unlicensed carrier is valid. The method of claim 1, wherein before performing power control on the unlicensed carrier, the method further comprises: Determining the priority of the carrier type and/or the priority of the channel type in a display mode or a system default manner, wherein the carrier type includes an authorized carrier type and an unlicensed carrier type, the channel type including a channel on the authorized carrier The type and type of channel on the unlicensed carrier. The method according to claim 21, wherein determining the priority of the carrier type and/or the priority of the channel type by using the display manner comprises: Receiving the priority of the carrier type and/or the priority of the channel type notified by the network side in a dynamic/semi-static form. The method according to claim 21, wherein determining the priority of the carrier type and/or the priority of the channel type by using the display manner comprises: Receiving a control instruction of the user equipment UE, wherein the control instruction is an instruction to control a priority of the carrier type and/or a priority of the channel type. The method according to claim 21, wherein, in the case of determining the priority of the carrier type by using the system default mode, the priority of the carrier type is set from high to low as: a primary carrier on the licensed carrier, a secondary carrier on the licensed carrier, or a secondary carrier on the unlicensed carrier; or The primary carrier on the authorized carrier, the secondary carrier on the unlicensed carrier, and the secondary carrier on the authorized carrier. The method according to claim 21, wherein the priority of the channel type is determined in a default manner of the system, and the priority of the channel type is set from high to low regardless of the carrier type. for: The physical uplink control channel PUCCH, the physical uplink shared channel PUSCH carrying the uplink control information UCI, and the PUSCH not carrying the UCI. The method according to claim 21, wherein after determining the priority of the carrier type and/or the priority of the channel type in a display mode or a system default manner, the method further comprises: Receiving a switching instruction, wherein the switching instruction is used to switch the display mode to the system default mode, or switch the system default mode to the display mode. The method of claim 21, wherein power control of the unlicensed carrier comprises: Power control is performed according to the priority. A power control device comprising: a determining unit configured to determine to transmit information on an unlicensed carrier; The control unit is configured to perform power control on the unlicensed carrier by using at least one of: performing power control according to a power spectral density PSD based on the resource unit RE; adjusting a PSD based on the resource block RB, and adjusting according to the PSD PSD performs power control; performs power control according to PSD of actual data and PSD of occupied signal, wherein the actual data is data actually transmitted by the transmitting end, and the occupied signal is a signal for occupying a channel; according to the power offset Performing power control, wherein the power offset is an offset of power of the unlicensed carrier relative to power calculated in an authorized carrier manner; power is adjusted by adaptively adjusting or semi-statically adjusting an idle channel to evaluate a CCA detection threshold Controlling power control by adjusting a range of values of at least one parameter related to power control; controlling power reduction of the authorized carrier and the unlicensed carrier, or controlling power reduction of an authorized carrier group and an unlicensed carrier group, Perform power control.

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