WO2014146503A1

WO2014146503A1 - Method and device for processing forming coefficient power of beam forming

Info

Publication number: WO2014146503A1
Application number: PCT/CN2014/070500
Authority: WO
Inventors: 刘龙; 孙长果; 徐明宇
Original assignee: 电信科学技术研究院
Priority date: 2013-03-18
Filing date: 2014-01-13
Publication date: 2014-09-25
Also published as: CN103167597A; CN103167597B

Abstract

Disclosed are a method and a device for processing forming coefficient power of beam forming, which are used for solving the problem of a great power loss caused after the power processing in the prior art. The method of the present invention comprises: for each target antenna in a physical layer, a base station determining a power factor corresponding to the target antenna, multiplying a forming coefficient of each piece of user equipment using a beam forming transmission manner on the target antenna by the power factor corresponding to the target antenna, and using the obtained product as a forming coefficient of the user equipment after processing, wherein all antennas configured in the system are target antennas; or a base station in a MAC layer determining the target antennas and a power factor corresponding to each target antenna, multiplying a forming coefficient of each piece of user equipment using a beam forming transmission manner on the target antenna by the power factor corresponding to the target antenna, and using the obtained product as a forming coefficient of the user equipment after processing. Embodiments of the present invention can reduce the power loss of multiple antennas, and improve system performance.

Description

Method and device for processing beamforming shaped coefficient power This application claims to be submitted to the Chinese Patent Office on March 18, 2013, the application number is 201310086214.0, and the invention name is "a beamforming shape forming power. The priority of the Chinese Patent Application, which is incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for processing a beamforming shaped coefficient power. Background technique

The so-called Multiple Input Multiple Output (MIMO) technology refers to a technique in which multiple antennas are used for transmitting and receiving data at both the transmitting end and the receiving end, and different data bits are transmitted on each antenna at the transmitting end. . By utilizing the spatial channel's irrelevance, there are multiple independent fading paths, multiple parallel channels are generated, and the data transmitted on each channel is different, thereby increasing channel capacity. If all multiplexed data streams are used for one User Equipment (UE), it is called Single User-MIMO (SU-MIMO). If multiple multiplexed data streams are used for multiple terminals, It is called Multi User (MU-MIMO).

The MU-MIMO transmission mode can schedule multiple user equipments on the same time-frequency resource. Therefore, when there are enough user equipments to have data to be transmitted at the same time, that is, in a service-intensive area, the MU-MIMO transmission method can be obtained. More gain than SU-MIMO transmission. However, there is co-channel interference in MU-MIMO, so it is usually necessary to perform the interference suppression at the origin to ensure orthogonality between user equipments to obtain better transmission performance.

The MU-MIMO originating interference suppression algorithm can effectively suppress the interference between user equipments and achieve better transmission performance by processing the shaping coefficients of the originating end. Commonly used origin interference suppression algorithms are Zero Forcing (ZF) algorithm and Block Diagonalization (BD) algorithm. However, for the RF target requirements of a multi-antenna system, not only does the total transmit power not exceed a certain value, but also the transmit power of a single antenna cannot exceed a certain value. For example, for an 8-antenna system, the transmit power requirement of each antenna cannot exceed the total transmit power. 1/8 of the limit. The originating interference suppression algorithm can only guarantee that the total transmit power is normalized, and it cannot guarantee that the transmit power of a single antenna does not exceed the standard. Therefore, after the termination interference suppression is completed, power processing is also required.

An existing power processing scheme restricts the power of each resource unit from exceeding the standard at the physical layer, and supports the maximum value of the single antenna transmit power of each resource element (Resource) on the base station side as P _max , the paired user. The number is N, then the specific power processing is as follows: a) Calculate the shaping coefficient power C (i = l, 2, ... N _t , N _f ) of each paired user in each antenna as the transmitting antenna n = \, 2, ... N is the number of user devices);

b) summing the power of all paired users by antenna to obtain the power of all paired users on each antenna.

(i = l, 2. N, the number of transmitting antennas), and sorted to obtain the maximum antenna power max(^);

d) Multiply the shaping coefficient of each paired user by the power factor p to complete the processing of the shaping coefficient power. The existing power processing scheme adopts a multi-user joint power processing strategy at the physical layer, calculates a power factor, converts the maximum transmit antenna power into a single antenna limit power, and other antennas multiply the power factor to perform an equal ratio processing. . However, after the power processing is performed by the scheme, the antenna with the highest transmit power can be transmitted with the maximum power of the single antenna, and the transmit power of other antennas is smaller than the maximum transmit power of the single antenna, thus causing a large power loss, thereby affecting System performance.

In summary, since the existing power processing scheme converts the power of the largest transmit antenna to the single antenna limit power at the physical layer, a large power loss is caused, thereby affecting system performance. Summary of the invention

Embodiments of the present invention provide a method and a device for processing a beamforming shaped coefficient power, which are used to solve the problem that after the power processing by using the existing power processing scheme, a large power loss is caused, thereby affecting system performance. The problem.

The embodiment of the invention provides a method for processing the power of the shaping coefficient of the beamforming, which comprises:

At the physical layer, for each #^ target antenna, the base station determines a power factor corresponding to the target antenna, and multiplies a shaping coefficient of the user equipment on the target antenna by the beamforming transmission mode by the target antenna. The power factor, the obtained product is used as the shaping coefficient after processing by the user equipment, wherein all antennas configured by the system are target antennas; or

In the medium shield access control MAC layer, the base station determines a target antenna from all antennas configured by the system; the base station determines a power factor corresponding to each target antenna, and each user equipment that uses the beamforming transmission mode The shaping coefficient on the target antenna is multiplied by the power factor corresponding to the target antenna, and the obtained product is used as the shaping coefficient after processing by the user equipment.

The embodiment of the invention provides a processing device for forming power of a beamforming shape, which comprises:

a first processing module, configured to determine, at a physical layer, a power factor corresponding to the target antenna for each target antenna, And multiplying the shaping coefficient of the user equipment of the beamforming transmission mode on the target antenna by the power factor corresponding to the target antenna, and using the obtained product as the shaping coefficient processed by the user equipment, where the system All antennas configured are target antennas; or

a second processing module, configured to: at a MAC layer, determine a target antenna from all antennas configured by the system; determine a power factor corresponding to each target antenna, and use each user equipment of the beamforming transmission mode at the target The shaping coefficient on the antenna is multiplied by the power factor corresponding to the target antenna, and the obtained product is used as the shaping coefficient after processing by the user equipment.

In the embodiment of the present invention, the base station determines, at the physical layer, a power factor corresponding to the target antenna for each target antenna, and multiplies a shaping coefficient of the user equipment in the beamforming transmission mode by the target antenna on the target antenna. The power factor corresponding to the target antenna, and the obtained product is used as the shaping coefficient processed by the user equipment, wherein all antennas configured by the system are target antennas; or at the MAC layer, the target antenna is determined from all antennas configured by the system; Determining a power factor corresponding to each target antenna, and multiplying a shaping factor of the user equipment on the target antenna by a beam factor of the target antenna to multiply the power factor corresponding to the target antenna, and using the obtained product as the user The shaping factor of the device after processing can reduce the power loss of multiple antennas and improve system performance. DRAWINGS

FIG. 1 is a schematic flowchart of a method for processing power of a forming coefficient in a physical layer according to an embodiment of the present invention; FIG. 1B is a schematic flowchart of a method for processing power of a forming coefficient in a MAC layer according to an embodiment of the present invention; A schematic flowchart of the first embodiment provided by the present invention;

3 is a schematic flowchart of Embodiment 2 of the present invention;

4 is a schematic flow chart of Embodiment 3 provided by the present invention;

FIG. 5 is a schematic flowchart diagram of Embodiment 4 provided by the present invention;

6 is a schematic flow chart of Embodiment 5 provided by the present invention;

Figure 7 is a power distribution diagram of the shaping coefficients of two paired users without power processing;

FIG. 8 is a power distribution diagram of the shaping coefficients of the two paired users processed in the manner of the background art; FIG. 9 is a power distribution of the shaping coefficients of the two paired users processed by the first embodiment provided by the present invention; FIG. 10 is a schematic structural diagram of a processing apparatus for forming a beam forming power of a beamforming according to the present invention; FIG. 11 is a schematic structural diagram of another processing apparatus for forming a beam forming power of a beam forming according to the present invention. detailed description

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The method for processing the shaping coefficient power of the beamforming provided by the embodiment of the present invention includes the physical layer (Physical layer)

Layer, PHY) The processing method of the shaping coefficient power and the processing method of the shaping coefficient power in the medium access control (MAC) layer, both of which can reduce the power loss of multiple antennas. Improve the performance of the system. specific:

Referring to FIG. 1A, a method for processing power of a shaping coefficient in a physical layer according to an embodiment of the present invention includes the following steps:

Step 11 A. For each target antenna, the base station determines a power factor corresponding to the target antenna.

Step 12A: For each target antenna, the base station multiplies the shaping coefficient of the user equipment in the beamforming transmission mode on the target antenna by the power factor corresponding to the target antenna, and uses the obtained product as the user equipment. Processing the shaped coefficients to complete the power processing;

All antennas configured in the system are target antennas.

Referring to FIG. 1B, a method for processing power of a shaping coefficient at a MAC layer according to an embodiment of the present invention includes the following steps:

Step 11B: The base station determines the target antenna from all the antennas configured by the system;

Step 12B: The base station determines a power factor corresponding to each target antenna.

Step 13B: The base station multiplies the shaping coefficient of the user equipment of the beamforming transmission mode on the target antenna by the power factor corresponding to the target antenna, and uses the obtained product as the shaping coefficient after processing by the user equipment. , thus completing the power processing.

It should be noted that, in the embodiment of the present invention, the processing of the shaping coefficient power is performed for the user equipment that uses the beamforming transmission mode.

In an implementation, the method for processing the shaping power of the two types of beamforming in the embodiment of the present invention includes the following three specific implementation manners:

Mode A: The base station performs power processing on the user equipment (ie, the pairing user) for each of the beamforming transmission modes at the physical layer;

In an implementation, for each resource element (Resource Element, RE), the base station determines, in the physical layer, the power factor corresponding to each target antenna in step 12A, and further includes:

For each target antenna, the base station determines the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna for each of the beamforming transmission modes;

The base station uses the square root of the ratio of the maximum transmit power corresponding to a single resource unit on the antenna to the transmit power of the target antenna as the power factor corresponding to the target antenna.

Further, in step 12A, for each target antenna, the base station uses the shaped beam transmission method for each of the dedicated beams. The shaping factor of the target device on the target antenna, and determining the transmission power of the target antenna by any of the following methods: Mode A1: The base station only according to each user equipment of the beamforming transmission mode on the target antenna Forming a coefficient, determining a transmit power of the target antenna;

Method A2: The base station determines the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna and the signal sent by the base station to the user equipment.

In implementation, in mode A1, the base station may determine the transmit power of the target antenna according to formula 1:

Wherein, is the transmit power of the first target antenna, / = 1, 2, ... Λ^, and TV" is the number of target antennas; V is the shaping coefficient of the user equipment W on the z'th target antenna, n 2 \, —, N , and the number of user devices.

In implementation, in mode A2, the base station can determine the transmit power of the target antenna according to formula 2: = (∑ A) ² ... Equation 2, where is the transmit power of the first target antenna, / = 1, 2, ...Λ^, and TV", is the number of target antennas; V _in is the shaping factor of the user equipment w on the z'th target antenna, " = 1, ..., W, and is the user equipment The number, the signal sent by the base station to the user equipment n. It should be noted that, because „, is a vector, the square of the vector generally refers to the square of the modulus of the vector. Mode A uses MU-MIMO paired users to jointly perform power processing. For the daily line, the base station calculates the sum of the powers of the shaping coefficients of all the paired users on the antenna, and adjusts the transmit power of each antenna to The maximum transmit power of a single antenna, thereby reducing the loss of transmit power, achieving better system performance, and lower complexity;

In this mode, the method of calculating the power factor is different, and the method of directly calculating the instantaneous power of the paired user by considering the real-time signal can be used (for example, mode A2); the signal of the paired user can be used to normalize, and only the paired user is calculated. The method of shape coefficient power (such as mode A1).

In the mode B, the base station determines whether the power of each user equipment is limited according to all resources configured by the system at the MAC layer, and specifically, the base station is configured according to each user equipment at the MAC layer (where the user equipment refers to the user equipment that the base station can schedule, It may be a user equipment that uses a beamforming transmission method or a user equipment that uses other transmission methods, and performs power processing in the process of resource allocation for the currently selected user equipment. In an implementation, in step 11B, the base station determines, at the MAC layer, the target antenna according to the following steps: for each antenna configured by the system, the base station determines the power corresponding to the occupied resources of each user equipment of the allocated resource on the antenna, and The sum of the determined powers is used as the allocated power of the antenna, that is: According to Equation 3, the allocated power of each antenna is determined:

N _a

P allocated = Y / P n,i formula three

n=\

Wherein, is the allocated power of the first target antenna, the power occupied by the user equipment of the Mth allocated resource on the ith antenna, and N _a is the number of user equipments of the allocated resources;

Determining the available power of the antenna according to the maximum output power corresponding to all resources configured by the system on the antenna and the allocated power of the antenna;

Determining, according to a shaping coefficient of the currently selected user equipment, a first required power corresponding to all estimated resources of the currently selected user equipment on the antenna;

When the determined first required power is greater than the available power of the antenna, and the currently selected user equipment uses the beamforming transmission mode, the antenna is determined to be the target antenna.

It should be noted that, in this mode, for all the estimated resources of the currently selected user equipment, if the first required power on all antennas is not greater than the available power of the corresponding antenna, the currently selected user equipment The power is not limited, and the currently selected user equipment is not required to be processed. Further, the base station allocates the required resources (that is, the same resources as the estimated resources) to the currently selected user equipment, and selects The next user equipment performs resource allocation;

In this manner, the base station determines the priority of each user equipment according to the setting principle, and sequentially selects the user equipment for resource allocation according to the determined priority.

Further, for each target antenna, the base station determines a power factor corresponding to the target antenna, and multiplies a shaping factor of the currently selected user equipment on the target antenna by a power factor corresponding to the target antenna, as the currently selected user. The shaping coefficient after processing by the device, thereby completing the processing of the shaping coefficient power of the user equipment.

Further, in step 12B, the base station determines the power factor corresponding to the target antenna, and may refer to two modes in mode A, namely:

The base station uses the square root of the ratio of the maximum output power corresponding to a single resource unit on the antenna to the transmit power of the target antenna as the power factor corresponding to the target antenna. Further, for each target antenna, the base station determines the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna for each of the beamforming transmission modes, and further includes:

The base station determines the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna for each of the target beamforming transmission modes; preferably, the base station determines the transmit power of each target antenna according to formula 1; Determining, by the base station, a transmit power of the target antenna according to a shaping coefficient of the user equipment on the target antenna and a signal sent by the base station to the user equipment, where the base station determines, according to formula 2, The transmit power of the root target antenna.

It should be noted that, in this mode, when determining the power factor corresponding to the target antenna, the base station may also use the method of determining the power factor in the prior art.

Further, in this mode, after processing, by the base station, the shaping coefficient of the currently selected user equipment, the base station further includes the following steps:

Determining, by the base station, the second required power corresponding to all estimated resources of the currently selected user equipment on the target antenna, according to the shaping coefficient processed by the currently selected user equipment;

If the determined second required power is not greater than the available power of the antenna, the base station allocates the same resource as the estimated resource number to the currently selected user equipment;

If the determined second required power is greater than the available power of the antenna, the base station allocates the required resources for the currently selected user equipment according to Equation 4: =, and k =

The base station allocates the required number of resources for the currently selected user equipment, and R is the estimated number of resources.

L " is a rounding down operation, 7. ^ is the available power of the first target antenna, _ee is the second required power of the first target antenna, i = 2, -N _t , and TV", which is the number of target antennas.

The mode B is applicable not only to the MU-MIMO scenario but also to the SU-MIMO scenario. For the SU-MIMO scenario, the number of user equipments (ie, paired users) is 1;

In this mode, in the MAC layer resource allocation process, according to the priority of the user equipment, whether the power of each user equipment is limited in each antenna is considered in turn, and power processing is not performed for the user equipment whose power is not limited; The restricted user equipment performs power processing and then determines the number of resources that the user equipment can allocate. This ensures that user devices with higher priority can be transmitted without loss.

In the mode C, the base station determines whether the power is limited based on all resources at the MAC layer, and specifically performs power processing after completing resource allocation of the user equipment. In an implementation, in step 11B, the base station is a user equipment at the MAC layer (the user equipment herein refers to all user equipments that the base station can schedule, including user equipments that use the beamforming transmission mode and other transmission modes. After the user equipment allocates resources, determine the target antenna according to the following steps:

Determining, by the base station, a first total power corresponding to resources occupied by all user equipments on each antenna;

When the first total power of at least one antenna is greater than the maximum output power corresponding to all resources configured on the antenna, the base station determines that all antennas configured by the system are target antennas.

It should be noted that if the first total power of each antenna is not greater than the maximum output power corresponding to all resources configured on the system, the power of the user equipment is not limited, so power processing of the user equipment is not required.

Further, for each target antenna, the base station determines a power factor corresponding to the target antenna, including: the base station determining, by the base station, the second total power of the resources occupied by the user equipments in the beamforming transmission mode;

The base station determines a power factor corresponding to the target antenna according to the first total power of the target antenna, the second total power of the target antenna, and the maximum output power corresponding to all resources configured by the system on the antenna.

Specifically, for each target antenna, the base station determines a power factor corresponding to the target antenna according to any one of the following formulas:

Wherein, is a power factor corresponding to the target antenna (ie, a power factor corresponding to each target antenna), TM« is the first total power of the target antenna, and is the second total power of the first target antenna, which is a single The maximum output power of all resources of the antenna connector, i = \, 2, ... N _t , and the number of target antennas; or =

Where k is the power factor corresponding to each target antenna (ie, the same power factor corresponding to all target antennas). In this mode, the base station considers all resources at the MAC layer to determine whether the power of the user equipment is limited. If the power is not limited, no processing is performed; if the power is limited, the user equipment of the beamforming transmission mode is used. Power processing, according to the power factor corresponding to each antenna, the power factor can be calculated by using Equation 5, that is, each antenna corresponds to a power factor; or the power factor can be calculated by using Equation 6, that is, all antennas are the same. Power factor

The base station comprehensively considers all resources at the MAC layer for power processing. Relative mode A and mode B can further reduce power loss due to the complementary relationship of transmit power that may exist on the same antenna between different resources. It should be noted that, when the base station performs the processing of the shaping coefficient power, any one of the above three processing methods (ie, mode A, mode B, and mode C) may be used.

Hereinafter, a method for processing the shaping coefficient power of the beamforming according to the embodiment of the present invention will be described with reference to the following specific embodiments.

Embodiment 1 In this embodiment, it is assumed that the maximum value of the single antenna transmit power of each resource element (Resource Element, RE) on the base station side (ie, the maximum transmit power corresponding to a single resource unit on each antenna) is P _max , the paired user The number is N, and the shaping coefficient of the user equipment W on the Z'th antenna is „ , where n 2 \, —, N, i = \, 2, ... N _t , is the number of antennas; As shown in FIG. 2, the method in this embodiment includes the following steps: Step 21: For each antenna, the base station calculates the transmit power of each antenna according to formula 1; (i = \, 2, ... N _t , N _f is Step 22: Calculate the square root of the ratio of the maximum homing _{max of the} single antenna transmit power to the transmit power of each antenna, and obtain the power factor A ( i = l, 2, ... N _t on each antenna) , N _f is the number of transmitting antennas), ie

Step 23. Multiply the shaping factor of each paired user by the power factor A by the antenna to complete the power processing. Embodiment 2 In this embodiment, it is assumed that the maximum value of the single antenna transmit power of each resource element (Resource Element, RE) on the base station side is P _max , the number of paired users is Ν, and the user equipment W is on the Z′th antenna. The shaping factor is

V _in , where n = \, -, N , i = \, 2, ... N _t , is the number of antennas; Referring to Figure 3, the method of this embodiment comprises the following steps:

Step 31: For each antenna, the base station calculates the transmit power of each antenna according to formula 2; (i = \, 2, ... N _t , N _f is the number of transmit antennas); Step 32, calculate single antenna transmit power The square root of the ratio of the maximum value P _max to the transmit power of each antenna, and the power factor A ( i = l, 2, ... N _t , N _f is the number of transmit antennas) on each antenna, ie

Step 33: Perform power processing on the shaping coefficient of each paired user by multiplying the antenna by the power factor Α·.

Embodiment 3 In this embodiment, the base station considers all the resources in the MAC layer to determine whether the power is limited. Specifically, in the process of resource allocation, determining whether the power of each user equipment is limited, thereby determining whether to perform power processing. , assuming the maximum output power of all resources of each antenna connector (ie, all resource pairs configured on the system for each antenna) The maximum output power should be P _m , where P = _x = P _max X The number of resources configured by the system, see 3GPP protocol TS36.104 for details.

Referring to FIG. 4, the method of this embodiment includes the following steps:

Step 41: The base station determines, at the MAC layer, the priority of the user equipment to be scheduled according to the setting principle.

Step 42: The base station sequentially selects the user equipment for resource allocation according to the determined priority, and determines the total power of each antenna device, that is, each user equipment that has successfully allocated resources, according to formula 3, before allocating resources for the currently selected user equipment. The allocated power of the root antenna Ρκ,. ( i = \, 2, ... N _t , is the number of antennas); wherein, in the calculation, the power of the user equipment on each resource unit is calculated first, and then the sum is obtained. The total power of the resources occupied by the user equipment. Step 43: The base station determines the available power of each antenna = ^ΐ - _/fora ^. , for the currently selected user equipment, estimates the required number of resources R, and calculates the currently selected user equipment on the estimated resources. The power value of each antenna required (ie the first required power) Ρ

Step 44: For each antenna, compare the required power of the currently selected user equipment on the antenna and the available power of the antenna (ie, determine ^ _eerf ,,.m, and _Pw according to the comparison result; of:

If P _dJ < P _avalable , , for all antennas, the power is not limited, and step 45 is performed; if for at least one antenna, Ρ _dJ > P, the power is limited, and step 46 is performed.

The power processing is specifically as follows: For the MU-MIMO case, the power processing mode may refer to the processing manner in the first embodiment or the second embodiment, that is, the power factor A of the antenna is calculated and multiplied to the shaping coefficient of the user equipment. For the SU-MIMO case, refer to the processing manner in Embodiment 1 or Embodiment 2, but the number of paired users is N=lo.

Step 45: Perform power processing on the currently selected user equipment, and allocate resources (ie, R resources) required by the user equipment, and return to step 42, and continue to perform resource allocation of the subsequent user equipment.

Step 46: If the currently selected user equipment uses the beamforming transmission mode, process the shaping coefficient of the user equipment on the antenna, and calculate the power value of each antenna after the power processing;

The power processing is specifically as follows: For the MU-MIMO case, the power processing mode may refer to the processing manner in the first embodiment or the second embodiment, that is, the power factor A of the antenna is calculated and multiplied to the shaping coefficient of the user equipment. For the case of SU-MIMO, reference may also be made to the processing manner in Embodiment 1 or Embodiment 2, but only the number of paired users. N=lo

Step 47: Compare, for the daily line, the power required by the currently selected user equipment in the antenna and the available power of the antenna (ie, determine whether the ^ is greater than), and perform corresponding processing according to the comparison result, specifically of:

If P _dJ < P _available , for all the antennas, step 45 is performed, and the shaping coefficient of the user equipment is updated to the shaping coefficient after the power processing;

If for at least one antenna, P _→ >P, _llable , , then step 48 is performed; step 48, A = mm ( ^PavaaMe ) is calculated, and the number of resources allocated to the user equipment is R' = [ ”.

4

Embodiment 4 In this embodiment, the base station comprehensively considers all resources at the MAC layer to determine whether the power is limited, and does not distinguish the priority of the user equipment, and performs power processing uniformly after the resource allocation is completed, assuming each antenna connector The maximum output power of all resources is shown in Figure 5. This embodiment includes the following steps:

Step 51: After the resource allocation of all user equipments is completed, calculate corresponding powers on all resources of each antenna.

P i U = , 2,...N _t , M is the number of antennas);

Step 52: For each antenna, compare the „ _{mi of} the antenna with the P of the antenna to determine whether the power is limited, and perform corresponding processing according to the comparison result. Specifically:

If for all antennas, P _sumJ ≤ ', the power is not limited, and step 53 is performed;

If for at least one antenna, P _OTn P , the power is limited, and step 54 is performed;

Step 53: No power processing is performed;

Step 54: Select a user equipment that uses the beamforming transmission mode, and calculate the total power of each antenna of the user equipment on the occupied resources /^ ( / = 1, 2, ... \^, the number of antennas), And calculating the power factor (i = \, 2, ... N _t , number of antennas) corresponding to each antenna according to formula 5; Step 55, multiplying the shape vector of the user equipment using the beamforming by the antenna by ^ , thus completing the power processing. Embodiment 5 In this embodiment, the base station comprehensively considers all resources at the MAC layer to determine whether the power is limited, and does not distinguish the priority of the user equipment, and performs power processing uniformly after the resource allocation is completed, assuming each antenna connector The maximum output power of all resources is Ρ= _χ . As shown in Figure 6, this embodiment includes the following steps:

Step 61: After the resource allocation of all user equipments is completed, calculate corresponding powers on all resources of each antenna.

P i U = , 2,...N _t , M is the number of antennas); Step 62: For each antenna, compare P _{sum i of} the antenna with P of the antenna, and perform corresponding processing according to the comparison result, specifically:

If for all antennas, P _sumJ ≤ ', the power is not limited, and step 63 is performed; if for at least one antenna, P _OTn P , the power is limited, and step 64 is performed;

Step 63: No power processing is performed;

Step 64: Select a user equipment that uses the beamforming transmission mode, and calculate the total power P _{SF i} (i = \, 2, ... N _t of the number of antennas) of each antenna of the user equipment on the occupied resources. And calculate the power factor corresponding to each antenna according to formula 5.

Step 65: Multiply the shaping vector of the user equipment shaped by the beam by the antenna to complete the power processing. The above method processing flow can be implemented by a software program, which can be stored in a storage medium shield, and when the stored software program is called, the above method steps are performed.

The specific implementation of the first embodiment of the present invention is described below by taking 8 antennas, two paired users, and each paired user transmitting one data stream as an example:

1) Calculate the shaping coefficients ^ and ₂ of the two paired users by the originating interference suppression algorithm, ( i = 2,...N _t , M is the number of antennas and TV", = 8 )

2) Calculate the power of _{2 i} and calculate the total power of the two paired users on each antenna according to the antenna sum = V _i ² + V ₂ f ;

3) Determine the shaping coefficient of the two paired users after power processing is }Τ _υ =

Figure 7 is a power distribution diagram of the shaping coefficients of the two paired users without power processing. The strip structure in the figure represents the power value of the shaping coefficient of the user equipment, the user equipment 1 above, the user equipment 2, and the shadows are coincident. Figure 8 is a diagram showing the power distribution of the shaping coefficients of the two paired users after the power processing in the manner of the background art; Figure 9 is a diagram of the two paired users after the power processing in the manner of the first embodiment of the present invention. The shape factor power distribution map, from the above three figures, the gain in power of the embodiment of the present invention relative to the existing power processing mode can be clearly seen.

Based on the same inventive concept, the embodiment of the present invention further provides a beam shaping forming power processing device, and the principle of solving the problem is similar to the processing method of the beam forming shape forming coefficient power. Therefore, the implementation of the device can be referred to the implementation of the method, and the repeated description will not be repeated.

As shown in FIG. 10, a processing apparatus for forming a beam-shaped shaping coefficient power according to an embodiment of the present invention includes: The first processing module 10 is configured to determine, at the physical layer, a power factor corresponding to the target antenna for each target antenna, and form a shaping coefficient of the user equipment of each of the beamforming transmission modes on the target antenna. Multiplying the power factor corresponding to the target antenna, and using the obtained product as the shaping coefficient processed by the user equipment, wherein all antennas configured by the system are target antennas; or

a second processing module 20, configured to: at the MAC layer, determine a target antenna from all antennas configured by the system; determine a power factor corresponding to each target antenna, and use each user equipment that uses the beamforming transmission mode in the The shaping coefficient on the target antenna is multiplied by the power factor corresponding to the target antenna, and the obtained product is used as the shaping coefficient after processing by the user equipment.

As an implementation manner, in the process of allocating resources for the currently selected user equipment according to the priority of each user equipment, the second processing module 20 determines the target antenna in the following steps:

Determining the power corresponding to the resources occupied by each user equipment of the allocated resource on the antenna for each antenna configured in the system, and determining the sum of the determined powers as the allocated power of the antenna; according to all the system configurations on the antenna Determining the available power of the antenna according to the maximum output power of the resource and the allocated power of the antenna; determining, according to the shaping coefficient of the currently selected user equipment, the first corresponding to all estimated resources of the currently selected user equipment on the antenna The required power; and when the determined first required power is greater than the available power of the antenna, and the currently selected user equipment uses the beamforming transmission mode, determining the antenna as the target antenna.

In this manner, the second processing module 20 is specifically configured to:

Determining a power factor corresponding to the target antenna for each target antenna, and multiplying a shaping factor of the currently selected user equipment on the target antenna by a power factor corresponding to the target antenna, and using the obtained product as the current selected The shaping factor after processing by the user equipment.

In this manner, the second processing module 20 further determines a power factor corresponding to the target antenna according to the following steps: For each target antenna, forming a target device on the target antenna according to each of the beamforming transmission modes a coefficient, determining a transmit power of the target antenna; and a square root of a ratio of a maximum output power corresponding to a single resource unit on the antenna to a transmit power of the target antenna, as a power factor corresponding to the target antenna.

In this manner, the second processing module 20 is further configured to:

Determining, according to the currently formed shaping coefficient of the currently selected user equipment, a second required power corresponding to all estimated resources of the currently selected user equipment on the target antenna;

If the determined second required power is not greater than the available power of the antenna, allocate the same resource as the estimated number of resources for the currently selected user equipment;

If the second required power is greater than the available power of the antenna, allocate the required resources to the currently selected user equipment according to the following formula: Min(

= , and k = where l is the number of resources required by the base station to allocate the currently selected user equipment, and R is the estimated number of resources.

L " is a rounding down operation, 7. ^ is the available power of the target antenna, _ee is the second required power of the target antenna, i = 2, -N _t , and TV", which is the number of target antennas.

As another implementation manner, for each resource unit, the first processing module 10 is at the physical layer, and determines the power factor corresponding to each target antenna according to the following steps:

For each target antenna, determining the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna for each beamforming transmission mode; and the maximum transmit power corresponding to a single resource unit on the antenna The square root of the ratio of the transmission power of the target antenna is the power factor corresponding to the target antenna.

In the embodiment of the present invention, for each target antenna, the first processing module 10 or the second processing module 20 determines the transmit power of the target antenna according to the following steps:

Determining the transmit power of the target antenna based only on the shaping factor of the user equipment on the target antenna for each beamforming transmission mode; or

The transmit power of the target antenna is determined according to a shaping coefficient of the user equipment on the target antenna and a signal transmitted to the user equipment.

Further, the first processing module 10 or the second processing module 20 determines the transmit power of the target antenna according to the formula of all user equipments on the target antenna according to the following formula: p = Y v ² where, is the root target The transmit power of the antenna, / = 1, 2, ... Λ ^ , and TV ", is the number of target antennas; V _in is the shape factor of the user equipment w on the z'th target antenna, n 2 \, - And N is the number of user equipments; or, the first processing module 10 or the second processing module 20 determines according to the shaping coefficients of all user equipments on the target antenna and the signals sent by each user equipment to each user equipment according to the following formula: The transmit power of the target antenna:

Among them, 8 „ is the signal sent to the user device w by itself.

As a further implementation, the second processing module 20 is specifically configured to: After allocating resources for each user equipment in the MAC layer, determining a first total power corresponding to resources occupied by all user equipments on each antenna; the first total power of at least one antenna is greater than all resources configured by the system on the antenna For the corresponding maximum output power, it is determined that all antennas configured in the system are target antennas.

In this manner, further, for each target antenna, the second processing module 20 determines the power factor corresponding to the target antenna according to the following steps:

Determining, by the user equipment occupied by the beamforming transmission mode, a second total power of the resource at the target antenna; and #^ according to the first total power of the target antenna, the second total power of the target antenna, and the target The maximum output power corresponding to all resources configured by the system on the antenna, and the power factor corresponding to the target antenna is determined.

In this manner, further, for each target antenna, the second processing module 20 determines the power factor corresponding to the target antenna according to any of the following formulas:

Wherein, the power factor corresponding to the first target antenna, Ρ _∞ · is the first total power of the first target antenna, _3⁄4 _F , is the second total power of the first target antenna, and is the largest resource of all the single antenna connectors Output power, i = \, 2, . ..N _t , and TV", is the number of target antennas; or =

Where ^ is the power factor corresponding to each #^ target antenna.

Referring to FIG. 11, another beamforming shaping coefficient power processing apparatus according to an embodiment of the present invention, a packet processor 30, is configured with a computer program for implementing functions when executing the computer program:

At the physical layer, for each #^ target antenna, determining a power factor corresponding to the target antenna, and multiplying a shaping coefficient of the user equipment of the beamforming transmission mode on the target antenna by a corresponding one of the target antennas a power factor, the obtained product is used as a shaping coefficient processed by the user equipment, wherein all antennas configured by the system are target antennas; or

At the MAC layer, determining the target antenna from all the antennas configured by the system; determining the power factor corresponding to each target antenna, and multiplying the shaping coefficient of each user equipment using the beamforming transmission mode on the target antenna The obtained product is used as the shaping factor after processing by the user equipment according to the power factor corresponding to the target antenna.

The memory 31, the code for storing the computer program, can be used to configure the processor 30. As an implementation manner, in the process of allocating resources for the currently selected user equipment according to the priority of each user equipment, the processor 30 determines the target antenna according to the following steps:

In this manner, further, the processor 30 is specifically configured to:

For each #^ target antenna, determining a power factor corresponding to the target antenna, and multiplying a shaping factor of the currently selected user equipment on the target antenna by a power factor corresponding to the target antenna, and using the obtained product as the current selection. The shaping factor of the user equipment after processing.

In this manner, the processor 30 further determines a power factor corresponding to the target antenna according to the following steps: for each target antenna, according to a shaping coefficient of the user equipment of each of the beamforming transmission modes on the target antenna, Determining a transmit power of the target antenna; and a square root of a ratio of a maximum output power corresponding to a single resource unit on the antenna to a transmit power of the target antenna as a power factor corresponding to the target antenna.

In this manner, further, the processor 30 is further configured to:

If the second required power is greater than the available power of the antenna, allocate the required resources to the currently selected user equipment according to the following formula:

R = and

;

Need where, the base station allocates the required number of resources for the currently selected user equipment, and R is the estimated number of resources.

L " is a rounding down operation, 7. ^ is the available power of the target antenna, _ee is the second required power of the target antenna, i = 2, -N _t , and M is the number of target antennas.

As another implementation manner, for each resource unit, the processor 30 determines, at the physical layer, the power factor corresponding to each target antenna according to the following steps: For each target antenna, determining the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna for each beamforming transmission mode; and the maximum transmit power corresponding to a single resource unit on the antenna The square root of the ratio of the transmission power of the target antenna is the power factor corresponding to the target antenna.

In the embodiment of the present invention, for each target antenna, the processor 30 or the processor 30 determines the transmit power of the target antenna in the following steps:

Further, the processor 30 or the processor 30 determines the transmit power of the target antenna according to the following formula based on the shaping coefficients of all user equipments on the target antenna:

Where is the transmission power of the first target antenna, i = \, 2, ... N _t , and TV", is the number of target antennas; V _in is the shaping coefficient of the user equipment W on the ζ' root target antenna , η 2 \, —, Ν , and is the number of user equipments; or, the processor 30 or the processor 30 according to the shaping coefficients of all user equipments on the target antenna and the signals sent by each user equipment to each user equipment, according to the following The formula determines the transmit power of the target antenna:

η η=\

Among them, 8 „ is the signal sent to the user device W by itself.

As a further implementation, the processor 30 is specifically configured to:

After allocating resources for each user equipment in the MAC layer, determining a first total power corresponding to resources occupied by all user equipments on each antenna; the first total power of at least one antenna is greater than all resources configured by the system on the antenna For the corresponding maximum output power, it is determined that all antennas configured in the system are target antennas.

In this manner, further, for each target antenna, the processor 30 determines the power factor corresponding to the target antenna according to the following steps:

Determining, by the user equipment occupied by the beamforming transmission mode, a second total power of the resource at the target antenna; and #^ according to the first total power of the target antenna, the second total power of the target antenna, and the target The maximum output power corresponding to all resources configured by the system on the antenna, and the power factor corresponding to the target antenna is determined. In this manner, further, for each target antenna, the processor 30 determines the power factor corresponding to the target antenna according to any of the following formulas:

Where ^ is the power factor corresponding to each #^ target antenna.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions are provided for implementing one or more processes and/or block diagrams in the flowchart The steps of the function specified in the box or in multiple boxes.

Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

A method for processing a beamforming shaped coefficient power, the method comprising: at a physical layer, for each #^ target antenna, a base station determines a power factor corresponding to the target antenna, and each 釆The shape factor of the user equipment in the beamforming transmission mode is multiplied by the power factor corresponding to the target antenna, and the obtained product is used as the shaping coefficient processed by the user equipment, wherein all antennas configured by the system are Target antenna; or

The method according to claim 1, wherein in the process of allocating resources for the currently selected user equipment according to the priority of each user equipment, the base station determines the target antenna according to the following steps:

For each antenna configured by the system, the base station determines a power corresponding to a resource occupied by each user equipment of the allocated resource on the antenna, and uses a sum of the determined powers as the allocated power of the antenna;

Determining, according to the shaping coefficient of the currently selected user equipment, a first required power corresponding to all estimated resources of the currently selected user equipment on the antenna;

3. The method of claim 2, wherein

For each target antenna, the base station determines a power factor corresponding to the target antenna, and multiplies a shaping factor of the currently selected user equipment on the target antenna by a power factor corresponding to the target antenna as the current selection. The shaping factor of the user equipment after processing.

The method according to claim 2, wherein, for each target antenna, the base station determines a power factor corresponding to the target antenna, and further includes:

For each target antenna, the base station determines the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna in each of the beamforming transmission modes;

The base station uses the square root of the ratio of the maximum output power corresponding to a single resource unit on the antenna to the transmit power of the target antenna as the power factor corresponding to the target antenna.

5. The method of claim 3, wherein the method further comprises:

And if the determined second required power is not greater than the available power of the antenna, the base station allocates, for the currently selected user equipment, the same resource as the estimated resource;

And if the second required power is greater than the available power of the antenna, the base station allocates the required resources to the currently selected user equipment according to the following formula:

R = , and

;

In which the base station allocates the required number of resources for the currently selected user equipment, where W is the estimated resource number, L ′ is a rounding operation, and ^Ln′M^ is the second target antenna. The available power, ^P _me d,i is the second required power of the root target antenna, i = \, 2, ... N _t , and TV", which is the number of target antennas.

The method according to claim 1, wherein, for each resource unit, the base station determines, at a physical layer, a power factor corresponding to each target antenna, and further includes:

The method according to claim 4 or 6, wherein, for each target antenna, the base station determines, according to a shaping coefficient of the user equipment on the target antenna for each of the beamforming transmission modes. The transmit power of the target antenna further includes:

Determining, by the base station, the transmit power of the target antenna according to a shaping coefficient of the user equipment on the target antenna for each of the beamforming transmission modes; or

And determining, by the base station, a transmit power of the target antenna according to a shaping coefficient of the user equipment on the target antenna and a signal sent by the base station to the user equipment.

The method according to claim 7, wherein the base station determines the target antenna according to the shaping formula of the user equipment on the target antenna according to each of the beamforming transmission modes. Transmit power:

Where is the transmit power of the first target antenna, / = 1, 2, ... Λ ^ , and TV ", is the number of target antennas; V _in is the shaping factor of the user equipment W on the z'th target antenna And n is the number of user equipments; or the shaping coefficient of the user equipment on the target antenna according to each of the beamforming transmission modes and the base station transmitting the user equipment to the user equipment Signal, determine the transmit power of the target antenna according to the following formula:

Among them, 8 „ is the signal sent by the base station to the user equipment w.

The method according to claim 1, wherein after the base station allocates resources for each user equipment at the MAC layer, the base station determines a target antenna that needs to be processed according to the following steps:

When the first total power of the at least one antenna is greater than the maximum output power corresponding to all resources configured by the system on the antenna, the base station determines that all antennas configured by the system are target antennas.

The method according to claim 9, wherein, for each target antenna, the base station determines a power factor corresponding to the target antenna, and further includes:

Determining, by the base station, all of the resources occupied by the user equipments in the beamforming transmission mode at the second total power of the target antenna;

The base station determines the power factor corresponding to the target antenna according to the first total power of the target antenna, the second total power of the target antenna, and the maximum output power corresponding to all resources configured on the target antenna.

The method according to claim 10, wherein, for each target antenna, the base station determines a power factor corresponding to the target antenna according to any one of the following formulas:

Wherein, the power factor corresponding to the first target antenna, ρ _∞ί · is the first total power of the first target antenna, _3⁄4 _F , is the second total power of the first target antenna, and is the largest resource of all the single antenna connectors Output power, i = \, 2, ... N _t , and TV", is the number of target antennas; or =

Where ^ is the power factor corresponding to each #^ target antenna.

A device for processing a beamforming shaped power of a beam, wherein the device comprises: a first processing module, configured to determine, at a physical layer, a power factor corresponding to the target antenna for each target antenna, And multiplying the shaping coefficient of the user equipment of the beamforming transmission mode on the target antenna by the power factor corresponding to the target antenna, and using the obtained product as the shaping coefficient processed by the user equipment, where the system All antennas configured are target antennas; or

The device according to claim 12, wherein the second processing module determines the target antenna according to the following steps in the process of allocating resources for the currently selected user equipment according to the priority of each user equipment:

Determining the power corresponding to the resources occupied by each user equipment of the allocated resource on the antenna for each antenna configured in the system, and determining the sum of the determined powers as the allocated power of the antenna; according to all the system configurations on the antenna Determining the available power of the antenna according to the maximum output power of the resource and the allocated power of the antenna; determining all estimated resources of the currently selected user equipment on the antenna according to the shaping coefficient of the currently selected user equipment Corresponding first required power; and determining that the antenna is the target antenna when the determined first required power is greater than the available power of the antenna, and the currently selected user equipment uses the beamforming transmission mode.

The device according to claim 13, wherein the second processing module is configured to: determine, for each target antenna, a power factor corresponding to the target antenna, and set the currently selected user equipment The shaping coefficient on the target antenna is multiplied by the power factor corresponding to the target antenna as the shaping coefficient after processing by the currently selected user equipment.

The device according to claim 13, wherein the second processing module determines a power factor corresponding to the target antenna according to the following steps:

For each target antenna, determining the transmit power of the target antenna according to the shaping coefficient of the user equipment on the target antenna for each beamforming transmission mode; and the maximum output power corresponding to the single resource unit on the antenna The square root of the ratio of the transmission power of the target antenna is the power factor corresponding to the target antenna.

The device of claim 14, wherein the second processing module is further configured to:

Determining, according to the shaping coefficient processed by the currently selected user equipment, a second required power corresponding to all estimated resources of the currently selected user equipment on the target antenna;

If the determined second required power is not greater than the available power of the antenna, allocate, for the currently selected user equipment, the same resource as the estimated resource; If the second required power is greater than the available power of the antenna, allocate the required resources to the currently selected user equipment according to the following formula:

R = and

;

Need, in which the number of resources required for the currently selected user equipment is allocated, W is the estimated number of resources, and L ′ is a rounding operation, 7. ^ . For the available power of the first target antenna, _ee is the second required power of the second target antenna, i = \, 2, ... N _t , and TV", which is the number of target antennas.

17. The apparatus according to claim 12, wherein, for each resource unit, the first processing module determines a power factor corresponding to each target antenna in the physical layer according to the following steps:

The device according to claim 15 or 17, wherein, for each target antenna, the first processing module or the second processing module determines the transmit power of the target antenna according to the following steps:

The transmit power of the target antenna is determined according to a shaping coefficient of the user equipment on the target antenna and a signal sent to the user equipment by each of the beamforming transmission modes.

The device according to claim 18, wherein the first processing module or the second processing module determines the target antenna according to the following formula based on the shaping coefficients of all user equipments on the target antenna. Transmit power:

Where is the transmission power of the first target antenna, i = \, 2, ... N _t , and TV", is the number of target antennas; V _in is the shaping coefficient of the user equipment W on the ζ' root target antenna And η 2 \, —, Ν , and is the number of user equipments; or, the first processing module or the second processing module sends each user to each user according to a shaping coefficient of all user equipments on the target antenna The signal of the device determines the transmit power of the target antenna according to the following formula:

Among them, 8 „ is the signal sent to the user device w by itself.

The device according to claim 12, wherein the second processing module is specifically configured to: after the MAC layer allocates resources for each user equipment, determine, corresponding to resources occupied by all user equipments on each antenna The first total power; when the first total power of the at least one antenna is greater than the maximum output power corresponding to all resources configured by the system on the antenna, it is determined that all antennas configured by the system are target antennas.

The apparatus according to claim 20, wherein, for each target antenna, the second processing module determines the power factor corresponding to the target antenna in the following steps:

The device according to claim 21, wherein, for each target antenna, the second processing module determines a power factor corresponding to the target antenna according to any one of the following formulas:

Where ^ is the power factor corresponding to each #^ target antenna.