CN111447666B

CN111447666B - Method and equipment for regulating and controlling uplink transmission power

Info

Publication number: CN111447666B
Application number: CN201910043100.5A
Authority: CN
Inventors: 郭徽; 刘敏
Original assignee: Hisense Co Ltd
Current assignee: Hisense Co Ltd
Priority date: 2019-01-17
Filing date: 2019-01-17
Publication date: 2021-06-01
Anticipated expiration: 2039-01-17
Also published as: CN111447666A

Abstract

The invention discloses a method and equipment for regulating and controlling uplink transmission power, relates to the technical field of wireless communication, and aims to solve the problem that no scheme for regulating the power of eMBB (enhanced multimedia broadcast multicast service) users and URLLC (universal radio link control) users for multiplexing an uplink exists in the future 5G application scene. The method comprises the following steps: after receiving an uplink multiplexing request sent by a URLLC terminal, determining a target vector determined by an initial power distribution parameter and a TPC vector corresponding to an instantaneous vector obtained by measurement according to the corresponding relation of the target vector, the instantaneous vector and a transmission power control TPC vector; the power of the terminal is finely adjusted according to the determined TPC vector, and because the power of the terminal is adjusted according to the TPC vector determined according to the corresponding relation when the URLLC terminal and the eMMC terminal multiplex the uplink, a scheme for adjusting the power of the eMMC terminal and the URLLC terminal which multiplex the uplink is provided.

Description

Method and equipment for regulating and controlling uplink transmission power

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method and a device for regulating uplink transmit power.

Background

For a future 5G (5 Mobile-generation, fifth-generation Mobile communication technology) application scenario, in the same cell, there may be two types of UEs, namely, an eMBB UE (enhanced Mobile BroadBand User Equipment) and a URLLC UE (Ultra-Reliable and Low Latency Communications User Equipment), and after information interaction is performed between a base station and the UE (User Equipment), the base station may obtain the type of each UE device. The service characteristic of the eMB UE is embodied as that the data transmission quantity is large, so the eMB UE can keep uninterrupted uplink connection with a base station, and for URLLC UE, the uplink transmission is discontinuous and aperiodic, and has strict transmission delay constraint.

In the LTE (Long Term Evolution) protocol, the base station compares a Signal to Interference plus Noise Ratio (SINR) measured in real time with a target SINR, and selects to up-adjust or down-adjust a Physical Uplink Shared Channel (PUSCH) transmit power of the UE according to the comparison result, and this operation is performed for a single UE. For a future 5G application scenario, when an eMBB user and a URLLC user in the same cell multiplex uplink, the number of the uplink in the cell does not change, and when data transmission is performed through the uplink, PUSCH transmission power needs to be adjusted for the eMBB UE and the URLLC UE which multiplex the uplink, but no scheme for adjusting the power of the eMBB UE and the URLLC UE exists at present.

In summary, for the future 5G application scenario, when uplink is multiplexed between URLLC users and eMBB users in a cell, there is no scheme for performing power adjustment on the eMBB users and URLLC users multiplexing the uplink.

Disclosure of Invention

The invention provides a method and equipment for regulating and controlling uplink transmission power, which are used for solving the problem that no scheme for regulating the power of eMMC users and URLLC users multiplexing uplink exists at present when URLLC users in a cell need to multiplex the uplink with eMMC users for a future 5G application scene in the prior art.

In a first aspect, a method for regulating uplink transmission power provided in an embodiment of the present invention includes:

after receiving an uplink multiplexing request sent by a URLLC terminal, the network side equipment determines a target vector determined by an initial power distribution parameter and a TPC vector corresponding to an instantaneous vector obtained by measurement according to the corresponding relation of the target vector, the instantaneous vector and a transmission power control TPC vector;

the network side equipment finely adjusts the power of the terminal according to the determined TPC vector;

the target vector comprises a target vector consisting of target SINR values of an eMBB terminal and a URLLC target vector consisting of target SINR values of a URLLC terminal; the instantaneous vector includes an instantaneous vector consisting of instantaneous SINR values for the eMBB terminal and a URLLC instantaneous vector consisting of instantaneous SINR values for the URLLC terminal.

According to the method, when the URLLC terminal and the eMMC terminal multiplex the uplink, the network side equipment needs to adjust the power of the eMMC UE and the URLLC UE which multiplex the uplink, the network side equipment determines the TPC vector according to the corresponding relation, namely, the TPC instruction for adjusting the power of the terminal is determined in a table look-up mode, so that the time is saved, the influence of time delay on the performance of the URLLC is reduced, and the TPC vector corresponds to the target SINR vector, so that the transmission after the power adjustment is more reliable.

In one possible implementation, the initial power allocation parameter includes a nominal power P0 and a path loss compensation parameter α;

the network side device determines the initial power allocation parameter by the following method:

the network side equipment adjusts the SINR of the terminal by adjusting the power distribution parameter;

the network side equipment takes the power distribution parameters corresponding to the maximum sum of the SINR values of all the eMBB terminals as initial power distribution parameters, wherein the SINR values of all the URLLC terminals are not less than the set SINR value, the transmission time delay of UL signals of all the URLLC terminals is not more than the set maximum transmission time delay, and the sum of the SINR values of all the eMBB terminals is the maximum;

wherein, the set SINR value is the minimum SINR value required for correctly demodulating the UL signal of the URLLC terminal.

According to the method, when the SINR values of all URLLC terminals are not less than the set SINR value, correct demodulation of uplink transmission from the URLLC UE to the base station is guaranteed, retransmission is not needed, the URLLC UE can meet the transmission performance requirements of high reliability and low time delay, the determined power distribution parameter enabling the maximum sum of the SINR values of the eMMC terminals in the set is ensured, the best power distribution parameter is found while the URLLC performance is guaranteed, and the transmission performance of the eMMC is optimized.

In a possible implementation manner, the network side device determines a correspondence relationship between a target vector, an instantaneous vector, and a TPC vector by:

aiming at any instantaneous vector, the network side equipment adjusts the TPC vector for multiple times, and determines the corresponding adjusted instantaneous vector after adjusting the TPC vector every time;

when the network side equipment determines that the target SINR value of the URLLC terminal in the target vector corresponding to the instantaneous vector is not greater than the SINR value of the URLLC terminal in the adjusted instantaneous vector, the TPC vector corresponding to the adjusted instantaneous vector with the minimum target vector distance is determined;

and the network side equipment binds the determined TPC vector with the target vector and any instantaneous vector.

According to the method, the terminals in the simulation scene are divided to obtain a plurality of terminal sets, simulation is carried out according to historical data and the like to generate more sets, instantaneous vectors, target vectors and the like, the best TPC vector meeting the conditions is determined to be bound with the target vector and the instantaneous vector through the method, and then the corresponding relation among the target vector, the instantaneous vector and the TPC vector is established, so that the TPC commands of a plurality of cells in the sets can be directly determined at the later stage, and further the power is adjusted.

In a possible implementation manner, the determining, by the network side device, a target vector determined by the initial power allocation parameter and a TPC vector corresponding to the measured instantaneous vector according to a correspondence between the target vector, the instantaneous vector, and the TPC vector includes:

and the network side equipment determines a target vector which is determined by the initial power distribution parameter and corresponds to the set to which the URLLC terminal sending the uplink connection request belongs and a TPC vector which corresponds to the measured instantaneous vector according to the corresponding relation of the target vector, the instantaneous vector and the TPC vector.

In the method, when a base station receives an uplink connection request sent by URLLC UE, the base station indicates that URLLC CE needs to multiplex an uplink with eMBB UE, at this time, a set to which the UE belongs is determined according to identification information of the URLLC UE sending the request, and a target vector corresponding to the set to which the UE belongs and determined by initial power distribution parameters and a TPC vector corresponding to a measured instantaneous vector are further determined according to a corresponding relation between the target vector, the instantaneous vector and the TPC vector, so that power fine adjustment is performed on a terminal in the set to which the UE belongs.

In a possible implementation manner, the fine-tuning, by the network side device, the power of the terminal in the set according to the determined TPC vector includes:

the network side equipment finely adjusts the power of the terminals in the set to which the URLLC terminal sending the uplink multiplexing request belongs according to the TPC vector; or

And the network side equipment carries out power fine adjustment on the URLLC terminal sending the uplink multiplexing request and the eMBB terminal carrying out uplink multiplexing with the URLLC terminal according to the TPC vector.

In the method, after the TPC vector is determined, when the power of the terminal in the set corresponding to the TPC vector is adjusted according to the determined TPC vector, the power can be finely adjusted only for eMBB and URLLC of the multiplexing uplink, and the method can effectively ensure the transmission delay of the URLLC terminal; the method can also be used for finely adjusting the power of all the terminals in the set, and the method can also ensure the optimal performance of the eMBB terminals in the set on the basis of ensuring the transmission performance of the URLLC terminals, so that the transmission is more reliable.

In a second aspect, an apparatus for regulating uplink transmit power according to an embodiment of the present invention includes: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the apparatus to perform the following:

after receiving an uplink multiplexing request sent by a URLLC terminal, determining a target vector determined by an initial power distribution parameter and a TPC vector corresponding to an instantaneous vector obtained by measurement according to the corresponding relation of the target vector, the instantaneous vector and the TPC vector;

carrying out power fine adjustment on the terminals in the set according to the determined TPC vector;

the processing unit is further configured to determine the initial power allocation parameter by:

adjusting the SINR of the terminal by adjusting the power distribution parameter;

taking the power distribution parameter corresponding to the time when the sum of the SINR values of all the eMBB terminals is maximum as an initial power distribution parameter, wherein the SINR values of all the URLLC terminals are not less than the set SINR value, the transmission time delay of UL signals of all the URLLC terminals is not more than the set maximum transmission time delay;

In one possible implementation, the processing unit is further configured to determine a correspondence between the target vector, the instantaneous vector, and the TPC vector by:

aiming at any instantaneous vector, regulating the TPC vector for multiple times, and determining a corresponding regulated instantaneous vector after regulating the TPC vector every time;

determining a TPC vector corresponding to the adjusted instantaneous vector with the minimum distance from the target vector when the target SINR value of the URLLC terminal in the target vector corresponding to the instantaneous vector is not greater than the SINR value of the URLLC terminal in the adjusted instantaneous vector;

binding the determined TPC vector with the target vector and the any transient vector.

In a possible implementation manner, the processing unit is specifically configured to:

and determining a target vector which is determined by the initial power distribution parameter and corresponds to a set to which the URLLC terminal sending the uplink connection request belongs and a TPC vector which corresponds to the measured instantaneous vector according to the corresponding relation of the target vector, the instantaneous vector and the TPC vector.

In a possible implementation, the comb unit is specifically configured to:

In a third aspect, an embodiment of the present invention further provides an apparatus for regulating and controlling uplink transmission power, where the apparatus includes a determining module and an adjusting module:

a determining module, configured to determine, after receiving an uplink multiplexing request sent by the URLLC terminal, a target vector determined by the initial power allocation parameter and a TPC vector corresponding to the measured instantaneous vector according to a correspondence between the target vector, the instantaneous vector, and the TPC vector;

and the adjusting module is used for carrying out power fine adjustment on the terminals in the set according to the determined TPC vector.

the determining module is further configured to determine the initial power allocation parameter by:

In a possible implementation manner, the determining module is further configured to determine a correspondence relationship between the target vector, the instantaneous vector, and the TPC vector by:

In a possible implementation manner, the determining module is specifically configured to:

In a possible implementation manner, the adjusting module is specifically configured to:

carrying out power fine adjustment on terminals in a set to which URLLC terminals sending uplink multiplexing requests belong according to the TPC vectors; or

And carrying out power fine adjustment on the URLLC terminal sending the uplink multiplexing request and the eMBB terminal carrying out uplink multiplexing with the URLLC terminal according to the TPC vector.

In a fourth aspect, the present application also provides a computer storage medium having a computer program stored thereon, which when executed by a processing unit, performs the steps of the method of the first aspect.

In addition, for technical effects brought by any one implementation manner of the second aspect to the fourth aspect, reference may be made to technical effects brought by different implementation manners of the first aspect, and details are not described here.

Drawings

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

Fig. 1 is a schematic diagram of a method for regulating uplink transmission power according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a method for partitioning a set of terminals in a cell according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a method for UE aggregation in a cell according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating another method for UE aggregation in a cell according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a method for periodically adjusting uplink transmission power according to an embodiment of the present invention;

fig. 6A is a schematic diagram of a corresponding relationship between a target vector, an instantaneous vector and a TPC vector according to an embodiment of the present invention;

FIG. 6B is a diagram illustrating another exemplary correspondence relationship between target vectors, instantaneous vectors and TPC vectors according to the present invention;

fig. 6C is a schematic diagram of power regulation and control of a TPC command according to an embodiment of the present invention;

fig. 6D is a schematic diagram of power regulation and control of another TPC command according to an embodiment of the present invention;

fig. 7A is a schematic diagram of an uplink channel occupancy situation of a UE in a cell according to an embodiment of the present invention;

fig. 7B is a schematic diagram of uplink channel resource allocation of a UE in a cell according to an embodiment of the present invention;

fig. 7C is a schematic diagram of UE uplink channel multiplexing in a first cell according to an embodiment of the present invention;

fig. 7D is a schematic diagram of resource allocation during uplink channel multiplexing of UE in another cell according to an embodiment of the present invention;

fig. 7E is a schematic diagram of UE uplink channel multiplexing in a second cell according to an embodiment of the present invention;

fig. 7F is a schematic diagram of UE uplink channel multiplexing in a third cell according to an embodiment of the present invention;

fig. 8 is a flowchart of a complete method for regulating uplink transmission power according to an embodiment of the present invention;

fig. 9 is a schematic diagram of an apparatus for regulating uplink transmission power according to an embodiment of the present invention;

fig. 10 is a schematic diagram of another apparatus for regulating uplink transmit power according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Some of the words that appear in the text are explained below:

1. the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

2. The term "terminal" in the embodiments of the present invention refers to a mobile communication device, including a mobile phone, a computer, a tablet, an intelligent terminal, a multimedia device, a streaming media device, and the like.

3. The term "clustering" in embodiments of the present invention refers to an analytical process that groups a set of physical or abstract objects into classes that are composed of similar objects. It is an important human behavior. The goal of cluster analysis is to collect data on a similar basis for classification. Clustering is derived from many fields, including mathematics, computer science, statistics, biology and economics. In different application fields, many clustering techniques have been developed, and these techniques are used to describe data, measure the similarity between different data sources, and classify data sources into different sets.

4. The term "network side device" in the embodiment of the present invention refers to a device capable of performing power control on a terminal, and includes a base station and the like.

The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.

5G is not an independent, entirely new Wireless access technology, but rather a technological evolution to the existing (including 2G, 3G, 4G, and WiFi (Wireless Fidelity)). According to the characteristics of 5G and international standard planning, 5G is divided into three application scenes: eMBB, mMTC (Massive Machine Type Communication), and URLLC.

The eMBB scene is mainly used for pursuing the extremely consistent communication experience among people for further improving the performance of user experience and the like on the basis of the existing mobile broadband service scene. Channel coding and decoding is one of the core technologies in the field of wireless communication, and the improvement of performance will directly improve network coverage and user transmission rate. The method mainly represents the improvement of network capacity, supports different devices to simultaneously transmit a large amount of data, and increases the bandwidth also means the increase of transmission rate. The ultra-large network throughput and faster rate enable users to get a better user experience. The application scenarios include some fields requiring ultra-high-definition video data transmission, such as AR (Augmented Reality)/VR (Virtual Reality), social networks, remote education and training, wireless home entertainment, and the like.

URLLC is critical to the widespread use of autonomous driving, industrial control, and other highly delay sensitive services. The delay of 5G mobile communication of E2E (End to End) needs to be reduced to below 1 ms in the above application scenario. In most cases, the delay is between 1 and 10 milliseconds. In the 4G network which is widely deployed at present, the end-to-end delay is 50-100 milliseconds, which is about one order of magnitude higher than that of 5G.

URLLC (ultra-high reliable and low latency communication) will be one of three major application scenarios of 5G mobile communication networks, wherein it is a traffic application of the latency/latency highly sensitive type, including automatic or assisted driving, AR, VR, haptic internet, industrial control. If the network delay is high, the normal operation of URLLC-type services is affected and (industrial) control errors occur.

With respect to the above scenario, the following describes an embodiment of the present invention in further detail with reference to the drawings of the specification.

As shown in fig. 1, the method for regulating uplink transmission power according to the embodiment of the present invention specifically includes the following steps:

step 100, after receiving an uplink multiplexing request sent by a URLLC terminal, a network side device determines a target vector determined by an initial power distribution parameter and a TPC vector corresponding to a measured instantaneous vector according to a corresponding relationship between the target vector, the instantaneous vector and the TPC vector;

and 101, performing power fine adjustment on the terminal according to the determined TPC vector.

By the scheme, when the URLLC terminal and the eMMC terminal multiplex the uplink to perform data transmission on the uplink, the network side equipment needs to adjust the power of the eMMC UE and the URLLC UE which multiplex the uplink, and because the TPC vector is determined according to the corresponding relation, namely a TPC instruction for adjusting the power of the terminal is determined in a table look-up mode, the time is saved, the influence of time delay on the performance of the URLLC is reduced, and the TPC vector corresponds to the target SINR vector, so that the transmission after the power adjustment is more reliable.

The method comprises the steps that after power rough adjustment is carried out on a terminal by network side equipment according to initial power distribution parameters, when a URLLC terminal sends an uplink multiplexing request, the network side equipment determines an eMBB terminal which carries out uplink multiplexing with the URLLC terminal, then power fine adjustment is carried out on the terminal according to a TPC vector determined by a corresponding relation of a target vector, an instantaneous vector and a transmission power control TPC vector, power adjustment is carried out on eMBB UE and URLLC UE which multiplex an uplink when URLLC UE in a cell needs to multiplex the uplink with the eMBB UE, and the TPC vector is directly determined to carry out power fine adjustment on the terminal through a table look-up mode.

For the future 5G application scenario, in the embodiment of the present invention, after the network side device performs power coarse adjustment on the terminal according to the initial power distribution parameter, when the URLLC terminal and the eMB terminal multiplex the uplink, the TPC vector for performing power regulation and control on the terminal in the set corresponds to the target vector and the instantaneous vector corresponding to the terminal in the combination, and the target vector is determined according to the initial power distribution parameter and represents the target SINR value of the terminal, so that after determining the TPC vector according to the corresponding relationship, only one power fine adjustment needs to be performed on the terminal in the set to make the SINR of the terminal after performing power adjustment approach to the target SINR, multiple interactions between the base station and the terminal are not needed, time is saved, the SINR threshold requirement that the uplink signal of the URLLC UE can be correctly decoded by the base station is met, and power adjustment is performed on all terminals in the set after directly determining the TPC vector, and complex calculation on TPC commands is not needed for many times, so that the influence of time delay on the URLLC performance is reduced, the time is saved, and the transmission is more reliable.

In the embodiment of the present invention, the set may be divided in units of cells, and terminals in one cell are divided into one set.

Optionally, when the terminals in the cell where the network side device is located are unevenly distributed, randomly located, or have a large number of terminals, the terminals in the cell may be divided into a plurality of sets, and the sets are divided according to the locations of the terminals in the cell.

Optionally, the terminals in the cell are divided by a clustering method, as shown in fig. 2, the specific process is as follows:

step 200, randomly selecting position points of a plurality of terminals in a cell as a mass center;

step 201, determining the distance from other terminals to each centroid in the cell, and dividing the other terminals into a set in which the closest centroid is located;

step 202, determining a new centroid for each of the sets;

step 203, judging whether a stop dividing condition is met, if so, executing step 204; otherwise, returning to execute step 201;

step 204, stopping the division of the set.

Wherein the division stopping condition includes but is not limited to some or all of the following:

the distance between the new centroid in each set and the original centroid is less than a distance threshold;

whether the number of divisions of the set reaches a number threshold.

For example, there are 10 terminals in a cell 1 in which a base station 1 is located, position points in which the

terminals

1, 2, and 3 are located are arbitrarily selected as centroids, and distances between the remaining 7 terminals and the selected 3 terminals are calculated, where a terminal 4 is closest to the terminal 1, terminals 5, 6, and 7 are closest to the terminal 3, and terminals 8 and 9 are closest to the terminal 2, the

terminals

1 and 4 are divided into a set, which is denoted as a set 1; dividing the terminals 3, 5, 6 and 7 into a set, and recording as a set 2; the terminals 2, 8, 9 are divided into a set, denoted as set 3. Since the terminal 10 is 25 meters from the terminal 1, the same distance is 15 meters from the

terminals

2, 3.

At this time, one of the

terminals

2 and 3 may be randomly selected to divide the terminal 10, and assuming that the terminal 3 is randomly selected, there are 3, 5, 6, 7, and 10 terminals in the set 2.

Or, further determining the density or number of terminals in the set where the

terminals

2 and 3 are located, and selecting a set with a lower density or a smaller number of terminals, for example, if the set 3 is selected according to the number of terminals in the set, the terminals in the set 3 have 2, 8, 9, and 10.

In the embodiment of the present invention, if the new centroid position of the determined set is a terminal in a cell, other terminals in the cell except for the terminal located at the centroid when the distances from other terminals in the cell to each centroid are re-determined refer to other terminals in the cell; if the determined new centroid position of the set is not a terminal in the cell, other terminals in the cell when the distances from other terminals in the cell to the centroids are re-determined refer to all terminals in the cell.

After the

sets

1, 2 and 3 are determined, determining new centroids of the

sets

1, 2 and 3, and determining that none of the newly determined centroids of the 3 sets is a terminal, assuming that the new centroid of the set 1 is a point a, the new centroid of the set 2 is a point b, and the new centroid of the set 3 is a point c, determining that the assumed distance threshold between the new centroid and the original centroid terminal is 1 meter, wherein the distance between the point a and the terminal 1 is 0.5 meter, the distance between the point b and the terminal 3 is 0.6 meter, and the distance between the point c and the terminal 2 is 0.7 meter, and then the distances between the new centroids of the 3 sets and the original centroid are all smaller than the distance threshold, and at this time, it can be known that the condition of stopping the division is met, and the sets are not being re-divided. If the distance between the new centroid of two sets of the 3 sets and the original centroid is not less than the distance threshold, 10 terminals in the cell 1 need to be divided again.

Or after determining the

sets

1, 2, and 3, determining new centroids of the

sets

1, 2, and 3, and determining whether the number of times of dividing the sets reaches a number threshold, for example, setting the number threshold of times of dividing the sets to 5, if the number of times of mixing and dividing is 1, and is less than the number threshold, the sets still need to be re-divided for the terminals in the cell, and assuming that the determined new centroids of the

sets

1 and 3 are not terminals, and the new centroid of the set 2 is terminal 5, the remaining 9 terminals except for the terminal 5 are re-divided.

In the embodiment of the invention, after the terminals in the cell are grouped according to the position information or the density information of the terminals, the power rough adjustment is carried out on the terminals in the group according to the initial power distribution parameters.

There are many ways to perform coarse power adjustment on the terminals in the set according to the initial power allocation parameters, which are listed as follows:

coarse tuning mode one, the nominal power P of each terminal in the set₀And the path loss compensation parameter alpha (alpha ) is used as an initial power distribution parameter of each terminal, and each terminal is roughly adjusted.

For example, there are 3 terminals in the set 1, where the initial power allocation parameter corresponding to the terminal 1 is (P)₀₁，α₁) Terminal 2 corresponds to (P)₀₂，α₂) Terminal 3 corresponds to (P)₀₃，α₃) Then, the power of each terminal is roughly adjusted according to the respective initial power distribution parameters of each terminal.

And a second coarse adjustment mode, namely determining the optimal power distribution parameters of the terminals in the set, taking the optimal power distribution parameters as the initial power distribution parameters of all the terminals in the set, and performing coarse adjustment on each terminal.

For example, there are 3 terminals in the set 1, and the determined optimal power allocation parameter for the 3 terminals is (P)₀α), then (P) will be₀α) as initial power allocation parameter for the 3 terminals according to (P)₀And alpha) performs a coarse power adjustment for each terminal.

Wherein the initial power allocation parameter (optimal power allocation parameter) is: the SINR values of all URLLC terminals in the set are not less than a set SINR value, the transmission delay of UL signals of all URLLC terminals is not more than a set maximum transmission delay, and the power distribution parameter with the maximum sum of the SINR values of eMBB terminals in the set is obtained; wherein, the set SINR value is the minimum SINR value required for correctly demodulating the UL signal of the URLLC terminal.

For example, assume that there are n URLLC UEs and m eMBB UEs within the set. The following optimization problem can be established:

an objective function:

s.t. (subject to, … satisfies …)

Constraint 1:

constraint 2: t is more than or equal to 0_i≤T₀ i＝1,2,…,n

Wherein, β is the minimum SINR threshold value required by the base station to correctly demodulate the UL signal of the URLLC UE, and is calculated according to the error rate required by the base station to decode the UL signal of the URLLC UE, and T is the minimum SINR threshold value required by the base station to correctly demodulate the UL signal of the URLLC UE₀For maximum delay constraint of uplink transmission, beta and T₀Set directly in the above formula, T_iFor the UL signal transmission delay of the ith URLLC UE,

the SINR for the ith URLLC UE,

SINR for jth eMBB UE.

The SINR can be calculated by the following formula:

wherein P is the transmission power, and is related to P₀And α, H is the channel gain, I is the interference, and N is the noise.

From the calculation formula of SINR, the adjustment (P)₀α), P will change, and then SINR will also change, and there are two constraints in the above optimization problem, where constraint 1 is: the SINR of n URLLC UEs in the set is not less than the minimum SINR threshold required by the base station to correctly demodulate the UL signals of the URLLC UEs, and constraint condition 2 is: the UL signal transmission time delay of n URLLC UEs in the set is not more than the maximum time delay constraint T of uplink transmission₀The objective function is the sum of SINRs of m eMBB UEs in the set, and the variable in the optimization problem is (P)₀α), by continuously adjusting (P)₀α) and then continuously adjusting the setFinding a group (P) of the maximum SINR of the m eMBB UEs in the set, which makes the target function to be maximum under the premise of meeting the two constraints₀α), the best power allocation parameter in the set. The optimal power distribution parameter is found while the URLLC performance is guaranteed, and the transmission performance of the eMBB is optimized.

In the embodiment of the present invention, when the power of the terminals in the set is coarsely adjusted according to the initial power allocation parameter, a set of optimal power allocation values (P0, α), that is, the optimal values obtained in one set, is obtained by calculating the above optimization problem, and the base station sends the set of optimal (P0, α) values to each UE in the set in the form of DCI, so as to implement setting the optimal initial values of the transmission power for all UEs in the set. The optimal power allocation parameter (P0, α) is mapped to the uplink transmit power, thereby achieving the optimal initial value of uplink transmit power for all UEs in the set.

Considering that the terminals in the cell move randomly within a given time and the interference situation changes accordingly, in the embodiment of the present invention, the terminals in the cell are periodically divided into a plurality of sets according to the positions of the terminals in the cell, after the division of the sets is performed again, the initial power allocation parameters of the terminals in the sets are further re-determined, so as to obtain the current optimal power allocation parameters, and the uplink transmission power is re-regulated after the sets change.

For example, the update set division period is set to be 6 hours, and the set in the cell 1 is divided once at 8:00 am, as shown in fig. 3, where there are 7 eMBB terminals and one URLLC terminal in the set 1; there are 7 URLLC terminals, 1 eMBB terminal in set 2; there are 3 URLLC terminals, 4 eMBB terminals in set 3.

The set in the cell 1 is divided again at 2:00 pm, the divided set is shown in fig. 4, and the set 1 has 4 eMBB terminals and 5 URLLC terminals; 6 URLLC terminals and 2 eMBB terminals exist in the set 2; there are 6 eMBB terminals in set 3.

As can be seen from fig. 3 and 4, the terminals in the cell have a significant change, so after periodically updating the partition of the terminal set in the cell, the optimal power allocation parameters of the terminals in the set can be re-determined by the optimization problem in the second coarse tuning manner.

FIG. 5 is a schematic diagram of a periodic power adjustment according to an embodiment of the present invention, in which a coarse adjustment and a fine adjustment are performed to form an adjustment period, and the adjustment period is P₀Adjusting power in coordination with alpha (coarse adjustment) and TPC (fine adjustment), namely periodically dividing terminals in a cell into a plurality of sets according to the position of the terminals in the cell, and periodically adjusting and controlling uplink transmission power, wherein the premise of periodically adjusting and controlling the uplink transmission power is that the target SINR of the terminals in the sets changes, when the target SINR of the terminals changes, coarse adjustment is carried out for one time, and after coarse adjustment in the period, if TPC instructions are received, fine adjustment is carried out on the terminals.

In the embodiment of the present invention, after the power of the terminal is coarsely adjusted according to the optimal initial power allocation parameter, the SINR of the terminal may approach or be adjusted to the target SINR, but the target SINR of the terminal changes with time or environment, so the embodiment of the present invention provides a method for periodically adjusting, where coarse adjustment is performed once per cycle to make the instantaneous SINR of the terminal reach the target SINR, but in the cycle, the instantaneous SINR of the terminal changes, so that fine adjustment needs to be performed on the terminal again, and a necessary premise is that a TPC command is received, and after the TPC command is received, power fine adjustment is performed on the terminal according to the TPC command to make the instantaneous SINR of the terminal after power adjustment approach to the target SINR.

As shown in fig. 5, SINR1, SINR2, and SINR3 in the figure are target SINRs of a terminal in different periods, where a time period from T1 to T3 is a period, and power coarse adjustment is performed on the terminal in a time period from T1 to T2, and it can be seen from the figure that when a TPC command is received at time T1, power fine adjustment is performed on the terminal, so that the instantaneous SINR after the terminal adjusts power at time T1 is close to SINR 1; similarly, the time period from T3 to T5 is a cycle, the power of the terminal is roughly adjusted in the time period from T3 to T4, and as can be seen from the figure, when the TPC command is received at time T2, the power of the terminal is finely adjusted so that the instantaneous SINR after the power of the terminal is adjusted at time T2 approaches SINR 2; the time period from t5 to t7 is a period, power rough adjustment is carried out on the terminal in the time period from t5 to t6, a TPC command is not received in the time period from t6 to t7, and power fine adjustment does not need to be carried out on the terminal at the moment.

In the embodiment of the invention, when the corresponding relation among the target vector, the instantaneous vector and the TPC vector is established, the terminal can be introduced through an assumed scene, the terminals at different positions are set, a simulation scene is established, then the clustering method is adopted to divide the set of the terminals in the cell, the corresponding relation is established after the set is divided, and a relatively perfect mapping table among the target SINR vector, the instantaneous SINR vector and the TPC command is established after a large amount of data is generated according to historical data, simulation data and the like.

In the embodiment of the invention, the SINR determined by the initial power distribution parameter is the target SINR.

And determining a group of optimal power distribution parameters (P0, alpha) corresponding to each set as initial power distribution parameters aiming at any terminal set obtained by analog division, wherein the SINR of each terminal obtained by calculation (P0, alpha) is the target SINR.

For example, there are 3 terminals in the set 1, the initial power allocation parameter is (P0, α), and the target SINRs of the three terminals can be obtained by substituting (P0, α) into SINR PH/(I + N).

Assuming that when the signal is 10:00, the channel gain of terminal 1 in set 1 is H1, the interference is I1, and the noise is N1, at this time, the target SINR of terminal 1 determined according to (P0, α) is PH1/(I1+ N1); at 10:30, the terminal in set 1 is unchanged, but under the influence of the environment, the interference of terminal 1 becomes I2, the noise becomes N2, and at this time, the set is not subdivided, (P0, α) is not determined again, and the target SINR for terminal 1 becomes SINR2 ═ PH1/(I2+ N2).

And determining a target vector corresponding to any set according to the initial power distribution parameters, and constructing a relatively perfect mapping table between the target SINR vector, the instantaneous SINR vector and the TPC command after generating a large amount of data through historical data, analog simulation data and the like.

Specifically, the corresponding relationship between the target vector, the instantaneous vector and the TPC vector is determined by the following method:

aiming at any instantaneous vector corresponding to a preset set obtained by terminal division in a simulation scene, regulating a TPC vector for multiple times, and determining a corresponding regulated instantaneous vector after regulating the TPC vector every time; determining a TPC vector corresponding to the adjusted instantaneous vector with the minimum distance from the target vector when the target SINR value of the URLLC terminal in the target vector corresponding to the instantaneous vector is not greater than the SINR value of the URLLC terminal in the adjusted instantaneous vector; binding the determined TPC vector with the target vector and the any transient vector.

Specifically, for a set of target vectors and instantaneous vectors in any set, an optimal TPC vector corresponding to the set of target vectors and instantaneous vectors is determined by an optimization problem, and assuming that there are n URLLC UEs and m eMBB UEs in the set, the following optimization problem can be established:

an objective function:

s.t.

constraint conditions are as follows:

wherein, the SINR^*For one of the target vectors, SINR, corresponding to one set^#SINR represents the SINR through TPC vector pair for the instantaneous vector corresponding to the target vector^#The adjusted instantaneous vector and SINR are obtained_iFor the ith bit of the SINR vector,

is SINR^*

To the ith position, the SINR is determined by the following formula:

SINR＝SINR^#+ΔSINR(TPC)

where Δ SINR (TPC) is a function of the TPC command as an argument, representing the change (positive or negative) in the SINR instantaneous value brought about by the TPC command adjustment.

The optimization problem is to determine a set of optimal TPC vectors according to SINR target vectors and SINR instantaneous vectors, where the variables are TPC vectors, where Δ SINR (TPC) is a change in SINR instantaneous value caused by TPC vector adjustment, and any instantaneous vector in the set is adjusted continuously by adjusting TPC vector continuously to obtain adjusted instantaneous vector SINR, and the objective function is: the distance between the target vector and the adjusted vector is subject to the following constraint conditions: the adjusted instantaneous SINR values of n URLLC UEs in the set are not less than the target SINR value, a group of TPC vectors which minimize the target function is determined in the TPC vectors meeting the constraint condition, namely under the condition that the target SINR value of any one URLLC UE is not more than the adjusted SINR value, a group of TPC vectors is found, the distance between the adjusted instantaneous vector obtained by adjusting the instantaneous vector through the TPC vectors and the SINR target vector is the minimum, and the TPC vector is the best TPC vector.

It should be noted that the method for establishing the mapping relationship between the SINR and the TPC command recited in the embodiment of the present invention is only an example, and any method for establishing the mapping relationship between the SINR and the TPC command is applicable to the embodiment of the present invention.

In the embodiment of the present invention, when the mapping relationship table between SINR and TPC commands is established, one set may correspond to one table, as shown in fig. 6A, an example of the schematic table is m eMBB UEs and n URLLC UEs in the set.

TM_i: the m eMB UE target SINRs in the set are vectors with the length of m, can be determined according to the initial power distribution parameters, and the effect is better when the initial power distribution parameters are the optimal power distribution parameters of the set.

TV_j: target SINR of n URLLC UEs in the set is one longThe vector of degree n may be determined based on the initial power allocation parameter, which may be more effective when the initial power allocation parameter is the best power allocation parameter of the set.

The m eMBB UE instantaneous SINRs in the set are a vector of length m.

The n URLLC UE instantaneous SINRs in the set are a vector of length n. If only one URLLC UE in the set sends SR, only one element in the vector has a value, and the other elements are 0; if there are n URLLC UEs in the set sending SRs, then all elements in the vector have values.

TPC instruction: a vector of length m + n is the TPC command sent by the base station to all UEs in the set. Calculating the optimization problem according to the target SINR and the instantaneous measured SINR of all the UEs (including eMBB UE and URLLC UE) in the set to obtain:

wherein, SINR target vectors of all UEs (including eMBB UE and URLLC UE) in the set are:

SINR^*＝(TM₁,TM₂,…TM_m,TV₁,TV₂,…TV_n) A vector of length m + n.

The SINR instantaneous vector for all UEs in the set (including eMBB UEs and URLLC UEs) is:

SINR^#＝(IM₁,IM₂,…IM_m,IV₁,IV₂,…IV_n) A vector of length m + n.

The corresponding relations of the target vector, the instantaneous vector and the TPC vector of each set may be uniformly established into a large table, and the table shown in fig. 6B may be obtained by summarizing the mapping relation tables of the sets by using the method for establishing the table shown in fig. 6A, where fig. 6A and 6B only list part of the corresponding relations, and there are many corresponding relations of the target vector, the instantaneous vector and the TPC vector in the actual table, and when the target vector determined by the initial power allocation parameter and the TPC vector corresponding to the measured instantaneous vector are determined according to the corresponding relations of the target vector, the instantaneous vector and the TPC vector, the table lookup process is specific:

Wherein the uplink connection Request includes a Scheduling Request (SR).

Because eMMC UE is large-capacity data transmission, the eMMC UE keeps non-discontinuous connection with a base station, UL requests of URLLC UE are sporadic and aperiodic, when URLLC UE sends a request to the base station, for example, after the base station 1 receives an SR sent by one URLLC UE, the URLLC UE indicates that the URLLC UE needs to multiplex an uplink with the eMMC UE, at the moment, the base station determines a set of the URLLC UE sending the uplink connection request according to identification information or position information of the UE, and the like, searches an SINR and TPC instruction mapping table (namely a target vector, an instantaneous vector and TPC vector corresponding relation table) according to instantaneous CSI, sends the set to all the UE to which the URLLC UE belongs through CSI information after determining the TPC vector, and carries out power fine adjustment on the power of all the UE by using TPC instructions for the UE (eMMC UE and URLLC UE) in all the sets.

Specifically, when determining a target vector determined by an initial power allocation parameter and a TPC vector corresponding to a measured instantaneous vector, which correspond to a set to which a URLLC terminal that sends an uplink connection request belongs, a base station finds a mapping relationship between an SINR and a TPC command according to a combination of an SINR target vector and an instantaneous vector of a UE in the set, an instantaneous SINR value and a target SINR value of the URLLC UE that sends an uplink connection request at the current time, where the relationship is described as follows:

wherein, the SINR^*The method comprises the steps that a vector with the length of m + n is used for representing target SINR values of all UE (including eMBB UE and URLLC UE) in a set, m is the number of the eMBB UE in the set, and n is the number of the URLLC UE in the set; SINR^#The method is a vector with the length of m + n, and the vector represents the instantaneous actual measurement SINR of all UE (including eMBB UE and URLLC UE) in a set, wherein m is the number of the eMBB UE in the set, and n is the number of the URLLC UE in the set;

is a TPC command value, is a vector, and the number of vector elements is the same as the number of all UEs in the set, i.e. m + n.

And the base station determines a target vector which is determined by the initial power distribution parameter and corresponds to the set to which the URLLC terminal sending the uplink connection request belongs and a TPC vector which corresponds to the measured instantaneous vector by searching the SINR and TPC instruction corresponding table.

For example, the target SINR of the URLLC UE sending the SR request is 12, the current instantaneous SINR is 11, there are 6 UEs in the set to which the URLLC UE belongs, 4 of them are eMBB UEs, and the TPC vector is (2, 0, 2, 3, 1, 2) obtained by determining the mapping relationship table of SINR and TPC command.

If the mapping relation between the SINR and the TPC command cannot be found in the mapping relation table between the SINR and the TPC command, combining the target vector with the instantaneous vector, for example, the vector consisting of the target SINR value corresponding to the set to which the URLLC UE sending the uplink connection request belongs and the current instantaneous SINR value is SINR, and the vector consisting of any set of the target vector and the instantaneous vector corresponding to the set in the mapping relation table is SINR^tThen, by the following formula:

S＝‖SINR-SINR^t‖

calculating the SINR obtained by current actual measurement and the SINR obtained by the corresponding table^tDistance S (euclidean distance between vectors) between them, the SINR recorded in the correspondence table in which the distance S is the shortest is found^tAnd in the row, the optimal TPC command under the condition of the current actually measured SINR can be obtained from the row. The base station then sends the TPC command set to all UEs (eMBB UE, URLLC UE) in the set, and the UE in the set carries out TPC command set controlThe power of all UEs is regulated (this is a fine tuning process compared to the previous power regulation of the terminals in the set according to the initial power allocation parameters), so that the power allocation of the UEs in the whole cell is in the best state.

For example, the target SINR of the URLLC UE sending the SR request is 12, the current instantaneous SINR is 11, 5 UEs in the set to which the URLLC UE belongs, 4 of them are eMBB UEs, the TPC vector corresponding to the set to which the URLLC UE belongs cannot be directly determined by looking up the mapping table of SINR and TPC command, at this time, the vector consisting of the target SINR value corresponding to the set and the instantaneous SINR value obtained by the current actual measurement is determined to be SINR, and if SINR is equal to (11, 10, 12, 14, 12, 10, 10, 12, 12, 11), the SINR consisting of each target vector and each instantaneous vector in the table is compared with each other^tCalculating S, determining SINR recorded in the corresponding table with shortest distance S^tIn the row, e.g. SINR^t1Corresponding S₁＝1，SINR^t2Corresponding S₂＝2，SINR^t3Corresponding S₃＝0.1，SINR^t4Corresponding S₄0.2, etc., wherein the shortest distance is S₃According to the SINR^t3And carrying out power fine adjustment on the power of all the UEs in the set by the TPC vector corresponding to the row.

In the embodiment of the present invention, there are many methods for the network side device to perform power fine-tuning on the terminal in the set according to the determined TPC vector, and the following methods are listed as follows:

and in the first adjustment mode, the network side equipment performs power fine adjustment on all terminals in the TPC vector corresponding set according to the TPC vector.

For example, the TPC vector determined by the network side device is the TPC vector corresponding to the row with the sequence number 24 in the table shown in fig. 6B, where the URLLC UE sending the uplink multiplexing request has a target SINR of 12dB and an instantaneous SINR of 13dB₁If the determined TPC vector is (1, 2, 3, 2, 3, 1), then the power of the terminals in the set corresponding to the TPC vector may be fine-tuned, where the TPC vector includes 6 command fields, and command field 1 corresponds to the eMBB₁Command field 2 corresponds to eMBB₂ The Command field 3 corresponds to eMBB₃The command field 4 corresponds to eMBB₄The command field 5 corresponds to URLLC₁Command field 6 corresponds to URLLC₂And performing power fine adjustment on the 6 terminals according to the TPC command fields corresponding to the 6 terminals.

Since the optimal SINR for each terminal during uplink data transmission at the target SINR value included in the target vector in the table shown in fig. 6B can meet the SINR threshold requirement that the URLLC UE uplink signal can be correctly decoded by the base station, and the sum of SINRs of the embbs in the set can be maximized, performing power fine adjustment on all terminals in the set by using the determined TPC vector can optimize the transmission performance of the embbs on the base station that ensures high reliability and low latency performance of URLLC.

And the network side equipment performs power fine adjustment on a URLLC terminal which sends an uplink multiplexing request in a set corresponding to the TPC vector and an eMBB terminal which performs uplink multiplexing with the URLLC terminal according to the TPC vector.

For example, the TPC vector determined by the network side device is the TPC vector corresponding to the row with the sequence number 24 in the table shown in fig. 6B, where the URLLC UE sending the uplink multiplexing request has a target SINR of 12dB and an instantaneous SINR of 13dB₁The determined TPC vector is (1, 2, 3, 2, 3, 1), and the URLLC determined by the network side equipment₁eMBBs with multiplexed channels of 10dB instantaneous SINR and 12dB target SINR₃Then the network side device can perform URLLC in the set corresponding to the TPC vector₁And eMBB₃Performing power fine adjustment, wherein the TPC vector comprises 6 command fields, and the command field 3 corresponds to eMBB₃The command field 4 corresponds to eMBB₄The command field 5 corresponds to URLLC₁If the network side equipment is towards URLLC₁And eMBB₃TPC commands are sent to adjust the power of these 2 terminals.

In the embodiment of the present invention, the adjustment range when performing power fine adjustment on the terminal in the set according to the TPC command is small, and the correspondence between the TPC command and the power change during fine adjustment is shown in the tables in fig. 6C and 6D, where fig. 6C shows the correspondence between the adjustment step size when performing power adjustment in an accumulation manner and the TPC command fieldFIG. 6D shows the corresponding relationship between the adjustment step size and the TPC command field when the power is adjusted in an absolute value manner, for example, the set to which URLLC UE transmitting SR belongs is (eMBB)₁，eMBB₂，eMBB₃，URLLC₁) The unit of power is dB, if the initial power before the power coarse adjustment is 5, 6, 7, 8, the power passes through P₀α) is (18, 19, 21, 17), and when the determined TPC vector is (0, 2, 1, 2), the adjustment is performed in the accumulation manner in fig. 6C, the variable of the adjustment is (-1, 1, 0, 1), and the power after the fine adjustment is (17, 20, 21, 18).

Specifically, the UE adjusts the transmit power of the UE through a TPC command in a PDCCH (Physical Downlink Control Channel). Two ways of adjusting the accumulation and the absolute value can be divided. The cumulative adjustment method is applied to PUSCH, PUCCH (Physical Uplink Control Channel) and SRS (Sounding Reference Signal), and the absolute value adjustment method is only applied to PUSCH. The switching between these two different adjustment modes is semi-static, and the base station indicates the UE to use an accumulation mode or an absolute value mode through dedicated RRC (Radio Resource Control) signaling.

The accumulation mode is that the current power adjustment value is the adjustment step size indicated in the TPC increased/decreased by the value of the last power adjustment, and the accumulation mode is the adjustment mode used by the UE by default. As shown in fig. 6C, the TPC in the accumulation mode in LTE may have two different sets of adjustment step sizes, where the first set of step size is (-1, 0, 1, 3) dB, and for PUSCH, the TPC is indicated by DCI (Downlink Control InFormation) Format 0 or Format 3; for PUCCH, indicated by DCI Format 1 or Format 1A or Format 1B or Format 1D or Format 2A or Format 3. The second set of step sizes is (-1, 1), indicated by DCI Format 3A (applicable to PUCCH and PUSCH), and mainly introduced in fig. 6C is the adjustment step size of the first set of accumulation mode adjustment step sizes and absolute value mode adjustment step sizes; the absolute value scheme is to use the power adjustment value indicated in the TPC directly and apply only to the PUSCH. At this time, the base station needs to explicitly turn off the power adjustment method in the accumulation mode through RRC signaling. When an absolute value mode is adopted, the TPC value is (-4, -1, 1, 4) dB, the DCI Format 0 or Format 3 indicates that the power adjustment range can reach 8dB (decibel), the method is suitable for discontinuous uplink transmission of the UE, and the base station can adjust the transmitting power of the UE to an expected value in one step.

The DCI mainly comprises the following components: format 0: the system is used for transmitting PUSCH scheduling authorization information; format 1: used for transmitting PDSCH (Physical Downlink Shared Channel) single code word scheduling authorization information; format 1A: is the compression mode of Format 1; format 1B: a Format 1 compression mode containing pre-coding information; format 1C: is the Compact compression (Very Compact) mode of Format 1; format 1D: a Format 1 compression mode containing pre-coding information and power offset information; format 2: scheduling closed-loop space division multiplexing mode UE; format 2A: scheduling open-loop space division multiplexing mode UE; format 3: for transmitting multi-user TPC commands, 2bit per user for PUSCH or PUCCH, multi-user joint coding. Format 3A: the method is used for transmitting the multi-user TPC command, and aiming at the PUSCH or PUCCH, each user has 1bit and multi-user joint coding.

In the embodiment of the present invention, after receiving an uplink multiplexing request sent by a URLLC terminal, a network side device determines an eMBB terminal performing uplink multiplexing with the URLLC terminal.

There are various ways for the network side device to determine the eMBB terminal performing uplink multiplexing with the URLLC terminal sending the uplink connection request, which are listed as follows:

and determining according to the distance of the terminal in a first determining mode.

As shown in fig. 7A, it can be seen from the figure that there are 5 eMBB UEs connected to the base station in real time, and fig. 7B shows the occupation situation of the channel resources of these 5 UEs, when a URLLC UE: when the URLLC1 is to multiplex uplink with the eMBB UEs, as shown in fig. 7C, the distance between the 5 eMBB UEs and the URLLC UE is determined to indicate that the eMBB3 is closest to the URLLC1, so that it is possible to determine that the URLLC1 and the eMBB3 multiplex channel 3, and fig. 7D shows the occupation of the channel resources of the 6 UEs after the URLLC and the eMBB multiplex uplink channels.

And determining according to the quality of the channel in a second determination mode.

As shown in fig. 7A, there are 5 eMBB UEs that keep connecting with the base station in real time, and fig. 7B shows the occupation situation of the channel resources of these 5 UEs, when a certain URLLC UE: when the URLLC1 is to multiplex uplink with the eMBB UEs, the quality of the channel 2 occupied by the eMBB2 is the best by determining the channel quality of the 5 eMBB UEs, so the base station determines that the URLLC1 and the eMBB2 multiplex the channel 2, as shown in fig. 7E, the occupancy of the channel resources of the 6 UEs after the URLLC and the eMBB multiplex uplink.

Optionally, if it is determined that a plurality of eMBB terminals are closest to the URLLC terminal, one eMBB terminal and one URLLC terminal may be randomly selected to multiplex a channel; or based on channel quality, for example: by determining the distance, the distance between the eMBBs 1 and eMBBs 2 is closest to the URLLC2, and the quality of the channel 1 occupied by the eMBBs 1 is higher than that of the channel occupied by the eMBBs 2, at this time, the base station can determine that the URLLC2 and the eMBBs 1 multiplex the channel 1, as shown in FIG. 7F.

As shown in fig. 8, a complete method for regulating uplink transmission power according to an embodiment of the present invention includes:

step 800, dividing the terminals in the cell into a plurality of sets by the base station according to the position of the terminal in the cell;

step 801, the base station determines the optimal power distribution parameters in the set and performs coarse power adjustment on all the terminals in the set according to the optimal power distribution parameters;

step 802, after receiving an uplink multiplexing request sent by a URLLC terminal, a base station determines an eMBB terminal performing uplink multiplexing with the URLLC terminal;

step 803, the base station determines a target vector determined by the initial power distribution parameter corresponding to the set to which the URLLC UE sending the request belongs and a TPC vector corresponding to the measured instantaneous vector according to the corresponding relationship between the target vector, the instantaneous vector and the TPC vector;

step 804, the base station sends the determined TPC vector to each UE in the set to perform power fine adjustment on the terminal in the set.

Based on the same inventive concept, the embodiment of the present invention further provides a device for regulating and controlling uplink transmission power, and since the device is the device in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are omitted.

As shown in fig. 9, an embodiment of the present invention further provides an apparatus for regulating uplink transmit power, where the apparatus includes: at least one processing unit 900, and at least one storage unit 901, wherein the storage unit 901 stores program code that, when executed by the processing unit 900, causes the apparatus to perform the following:

performing power rough adjustment on the terminals in the set according to the initial power distribution parameters;

after receiving an uplink multiplexing request sent by a URLLC terminal and determining an eMBB terminal which carries out uplink multiplexing with the URLLC terminal, determining a target vector determined by an initial power distribution parameter and a TPC vector corresponding to an instantaneous vector obtained by measurement according to the corresponding relation of the target vector, the instantaneous vector and the TPC vector;

Optionally, the processing unit 900 is further configured to:

terminals in a cell are divided into sets according to their positions in the cell.

Optionally, the processing unit 900 is specifically configured to:

randomly selecting the position points of a plurality of terminals in a cell as a mass center;

determining the distance from other terminals to each centroid in the cell, and dividing the other terminals into a set in which the closest centroid is located;

determining a new centroid for each of said sets;

judging whether a division stopping condition is met or not, and if so, stopping the division of the set;

otherwise, re-executing the step of determining the distances from other terminals in the cell to the centroids;

wherein the division stopping condition is part or all of the following:

whether the number of divisions of the set reaches a number threshold.

Optionally, the processing unit 900 is further configured to:

the terminals in the cell are periodically divided into a plurality of sets according to the positions of the terminals in the cell, and the uplink transmission power is regulated again after the sets are changed.

Optionally, the initial power allocation parameter includes a nominal power P0 and a path loss compensation parameter α;

taking the power distribution parameter corresponding to the time when the sum of the SINR values of all the eMBBs in the set is maximum as an initial power distribution parameter, wherein the SINR values of all the URLLC terminals in the set are not less than a set SINR value, the transmission time delay of UL signals of all the URLLC terminals is not more than a set maximum transmission time delay, and the sum of the SINR values of all the eMBBs in the set is not more than the set maximum transmission time delay;

Optionally, the processing unit 900 is further configured to determine a corresponding relationship between the target vector, the instantaneous vector, and the TPC vector by:

aiming at any instantaneous vector corresponding to a preset set obtained by terminal division in a simulation scene, regulating a TPC vector for multiple times, and determining a corresponding regulated instantaneous vector after regulating the TPC vector every time;

Optionally, the processing unit 900 is specifically configured to:

Optionally, the carding unit 900 is specifically configured to:

As shown in fig. 10, an embodiment of the present invention further provides an apparatus for regulating uplink transmit power, where the apparatus includes: determination module 1000, and adjustment module 1001:

the determination module 1000: the eMBB terminal is used for determining a target vector determined by the initial power distribution parameter and a TPC vector corresponding to the measured instantaneous vector according to the corresponding relation among the target vector, the instantaneous vector and the TPC vector after receiving an uplink multiplexing request sent by the URLLC terminal and determining the eMBB terminal which carries out uplink multiplexing with the URLLC terminal;

an adjusting module 1001, configured to perform power fine adjustment on a terminal in a set according to the determined TPC vector.

Optionally, the determining module 1000 is further configured to:

Optionally, the determining module 1000 is specifically configured to:

determining a new centroid for each of said sets;

wherein the division stopping condition is part or all of the following:

whether the number of divisions of the set reaches a number threshold.

Optionally, the determining module 1000 is further configured to:

the determining module 1000 is further configured to determine the initial power allocation parameter by:

Optionally, the determining module 1000 is further configured to determine a corresponding relationship between the target vector, the instantaneous vector, and the TPC vector by:

Optionally, the determining module 1000 is specifically configured to:

Optionally, the adjusting module 1001 is specifically configured to:

An embodiment of the present invention further provides a computer-readable non-volatile storage medium, which includes a program code, and when the program code runs on a computing terminal, the program code is configured to enable the computing terminal to execute the steps of the method for regulating uplink transmission power to regulate uplink transmission power according to the embodiment of the present invention.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for regulating uplink transmit power, the method comprising:

after receiving an uplink multiplexing request sent by an ultra-reliable low-delay communication URLLC terminal, network side equipment determines a target vector determined by an initial power distribution parameter and a TPC vector corresponding to an instantaneous vector obtained by measurement according to the corresponding relation of the target vector, the instantaneous vector and a transmission power control TPC vector;

the target vector comprises a target vector consisting of target signal to interference plus noise ratio (SINR) values of an enhanced mobile bandwidth eMBB terminal and a URLLC target vector consisting of target SINR values of a URLLC terminal; the instantaneous vector includes an instantaneous vector consisting of instantaneous SINR values for the eMBB terminal and a URLLC instantaneous vector consisting of instantaneous SINR values for the URLLC terminal.

2. The method of claim 1, wherein the initial power allocation parameters include a nominal power P0 and a path loss compensation parameter a;

3. The method of claim 1, wherein the network side device determines the correspondence of the target vector, the instantaneous vector, and the TPC vector by:

4. The method of any one of claims 1 to 3, wherein the network side device determines a target vector determined by the initial power allocation parameter and a TPC vector corresponding to the measured instantaneous vector according to a corresponding relationship between the target vector, the instantaneous vector and the TPC vector, and includes:

5. The method of claim 1, wherein the network side device performs power fine adjustment on a terminal according to the determined TPC vector, and comprises:

6. An apparatus for regulating uplink transmit power, the apparatus comprising: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the apparatus to perform the following:

7. The apparatus of claim 6, wherein the initial power allocation parameters comprise a nominal power P0 and a path loss compensation parameter a;

8. The apparatus of claim 6, wherein the processing unit is further for determining a correspondence of a target vector, an instantaneous vector, and a TPC vector by:

9. The apparatus according to any one of claims 6 to 8, wherein the processing unit is specifically configured to:

10. The device of claim 6, wherein the processing unit is specifically configured to;