CN110351832A

CN110351832A - For distributing method and the base station of antenna port

Info

Publication number: CN110351832A
Application number: CN201810284421.XA
Authority: CN
Inventors: 姜宇; 陈偲艺; 李安新; 陈岚; 染谷隆雄; 下平英和
Original assignee: Nippon Telegraph and Telephone Corp
Current assignee: NTT Docomo Inc; Nippon Telegraph and Telephone Corp
Priority date: 2018-04-02
Filing date: 2018-04-02
Publication date: 2019-10-18
Also published as: JP2019186923A

Abstract

Present disclose provides a kind of method for being used to distribute antenna port executed by base station and corresponding base stations.This method comprises: selecting one group of antenna port from candidate antenna port according to the first parameter information of the target terminal user in one or more user terminals and the first parameter information of one or more user terminals；And it is communicated by selected one group of antenna port with the target terminal user.The base station includes: selecting unit, is configured as the first parameter information of the first parameter information and one or more user terminals according to the target terminal user in one or more user terminals, selects one group of antenna port from candidate antenna port；And transmission unit, it is configured as communicating by selected one group of antenna port with the target terminal user.

Description

For distributing method and the base station of antenna port

Technical field

This disclosure relates to mobile communication field, and relate more specifically to a kind of for distributing the method and base of antenna port It stands.

Background technique

In order to improve the channel capacity of communication system, it has been proposed that multiple-input, multiple-output (Multiple Input Multiple Output, MIMO) technology.In MIMO technology, base station and user terminal use multiple transmission antennas and receiving antenna simultaneously respectively Multiple data flows are transmitted capablely, to improve the capacity of communication system without increase in bandwidth.According to simultaneously and base station The quantity of the user terminal communicated, MIMO can be divided into single user (Single User, SU) MIMO and multi-user (Multiple Users, MU) MIMO.SU-MIMO refers to that multiple data flows are only concurrently transmitted with a user in base station, and MU- MIMO refers to that multiple data flows are concurrently transmitted in base station and multiple users.

Antenna end in existing SU-MIMO and MU-MIMO, for each user terminal, for data transmission The quantity of mouth is fixed.The antenna port of fixed quantity makes the efficiency of parallel transmission limited, thereby reduces data transmission Handling capacity.

Summary of the invention

According to one embodiment of the disclosure, a kind of method for distributing antenna port executed by base station is provided. This method comprises: according to the first parameter information and one or more of the target terminal user in one or more user terminals First parameter information of user terminal selects one group of antenna port from candidate antenna port；And pass through selected one group of day Line end mouth is communicated with the target terminal user.

According to another embodiment of the present disclosure, it provides a kind of for distributing the base station of antenna port.The base station includes: choosing Select unit, be configured as according to the first parameter information of the target terminal user in one or more user terminals and one or First parameter information of multiple user terminals selects one group of antenna port from candidate antenna port；And transmission unit, it is configured To be communicated by selected one group of antenna port with the target terminal user.

According to another embodiment of the present disclosure, a kind of method for distributing antenna port executed by base station is provided. This method comprises: selecting first group of antenna port from candidate antenna port according to the second parameter information of multiple user terminals With second group of antenna port, first group of antenna port is for the first user terminal in multiple user terminals, second group of antenna end Mouth is for the second user terminal in multiple user terminals, wherein when the channel quality of the first user terminal is whole better than second user When the channel quality at end, the quantity of the antenna port in first group of antenna port is less than the antenna port in second group of antenna port Quantity；And by selected first group of antenna port and second group of antenna port respectively with first user terminal and The second user terminal communication.

According to another embodiment of the present disclosure, it provides a kind of for distributing the base station of antenna port.The base station includes: choosing Unit is selected, the second parameter information according to multiple user terminals is configured as, first group of antenna is selected from candidate antenna port Port and second group of antenna port, first group of antenna port is for the first user terminal in multiple user terminals, second group of day Line end mouth is for the second user terminal in multiple user terminals, wherein the channel quality when the first user terminal is used better than second When the channel quality of family terminal, the quantity of the antenna port in first group of antenna port is less than the antenna in second group of antenna port The quantity of port；And transmission unit, it is configured as through selected first group of antenna port and second group of antenna port point It is not communicated with first user terminal and the second user terminal.

Detailed description of the invention

The embodiment of the present disclosure is described in more detail in conjunction with the accompanying drawings, the above-mentioned and other purpose of the disclosure, Feature and advantage will be apparent.Attached drawing is used to provide to further understand the embodiment of the present disclosure, and constitutes explanation A part of book is used to explain the disclosure together with the embodiment of the present disclosure, does not constitute the limitation to the disclosure.In the accompanying drawings, Identical reference label typically represents same parts or step.

Fig. 1 is described can be using the schematic diagram of the configuration of the base station of the embodiment of the present disclosure.

Fig. 2A shows the schematic diagram for the antenna port that base station is distributed to user terminal in the prior art.

Fig. 2 B shows another schematic diagram for the antenna port that base station is distributed to user terminal in the prior art.

Fig. 2 C shows another schematic diagram for the antenna port that base station is distributed to user terminal in the prior art.

Fig. 2 D shows another schematic diagram for the antenna port that base station is distributed to user terminal in the prior art.

Fig. 3 is the flow chart according to the method for distributing antenna port of the embodiment of the present disclosure executed by base station.

Fig. 4 is the base station according to the embodiment of the present disclosure successively to the process of the method for each user terminal distribution antenna port Figure.

Fig. 5 A shows the schematic diagram of the antenna port distributed according to the base station of the embodiment of the present disclosure to user terminal.

Fig. 5 B shows another schematic diagram of the antenna port distributed according to the base station of the embodiment of the present disclosure to user terminal.

Fig. 5 C shows another schematic diagram of the antenna port distributed according to the base station of the embodiment of the present disclosure to user terminal.

Fig. 5 D shows another schematic diagram of the antenna port distributed according to the base station of the embodiment of the present disclosure to user terminal.

Fig. 6 is the process according to the method for distributing antenna port of another embodiment of the disclosure executed by base station Figure.

Fig. 7 is the block diagram according to the base station of the execution method shown in Fig. 3 of the embodiment of the present disclosure.

Fig. 8 is the block diagram according to the base station of the execution method shown in fig. 6 of another embodiment of the disclosure.

Fig. 9 is the schematic diagram according to the hardware configuration of the base station of the embodiment of the present disclosure.

Specific embodiment

In order to enable the purposes, technical schemes and advantages of the disclosure become apparent, root is described in detail below with reference to accompanying drawings According to the example embodiment of the disclosure.

Firstly, referring to Fig.1 come describe can using the embodiment of the present disclosure base station configuration schematic diagram.The base station can be Base station in LTE system is also possible to the base station in the wireless communication system of any other type, such as lte-a system or 5G Base station etc. in system.Hereinafter, example is described implementation of the disclosure by taking the base station in LTE system as an example, but it should understanding It arrives, the base station being readily applicable in other kinds of wireless communication system is described below.

Base station may include one or more Transmit-Receive Units (Transceiver units, TxRU), and by this or Multiple TxRU and one or more user terminals concurrently transmit multiple data flows.For example, as shown in Figure 1, base station may include Eight TxRU, respectively TxRU 111, TxRU 112, TxRU 113, TxRU 114, TxRU 115, TxRU 116, TxRU 117 With TxRU 118, concurrently to transmit multiple data flows to by the user terminal of SU/MU-MIMO and base station communication.

In addition, base station can be by determining corresponding antenna port with the TxRU of user terminal communication.For example, antenna end Mouth can be the TxRU that different business data are sent to user terminal.Alternatively, antenna port is also possible to user terminal Send the TxRU of different reference signals (Reference Signal, RS), reference signal such as channel state information reference signals (Channel State Information RS, CSI-RS), the specific reference signal of cell (Cell-specific RS, CRS) etc..It will be appreciated that the antenna end that the quantity of the TxRU of base station and user terminal communication and base station are distributed to user terminal The quantity of mouth may be the same or different.

In addition, base station can also form wave beam according to the TxRU of user terminal communication, and pass through wave beam to user terminal Transmit data.For example, as shown in Figure 1, base station can form wave beam 120 according to the TxRU of user terminal communication, and pass through wave Beam 120 transmits data to user terminal.

In the prior art, for passing through the SU (single user's terminal) of SU-MIMO and base station communication and passing through MU- Each user terminal in MIMO and the MU of base station communication, base station are fixed to the quantity of its antenna port distributed.Fig. 2A The schematic diagram for the antenna port that base station is distributed to user terminal in the prior art is shown to Fig. 2 D.

For example, as shown in Figure 2 A, base station is assigned with 2 antenna ports, also, and antenna end to SU (single user's terminal) The corresponding TxRU of mouth is TxRU 111-118.This is because, base station is sent out by TxRU 111 and TxRU 112 to user terminal Different data are sent, and TxRU 113, TxRU 115, TxRU 117 are identical as the data that TxRU 111 is sent, TxRU 114, TxRU 116, TxRU 118 are identical as the data that TxRU 112 is sent, therefore, the antenna port that base station gives the user terminal to distribute It is 2.Following example be also it is similar, repeat no more.

In another example as shown in Figure 2 B, when MU includes two user terminals, base station is also divided to each user terminal in MU 2 antenna ports are matched, also, TxRU corresponding with the antenna port of first user terminal in MU is TxRU 111- 114, TxRU corresponding with the antenna port of second user terminal in MU are TxRU 115-118.

In another example as shown in Figure 2 C, when MU includes three user terminals, base station is also divided to each user terminal in MU 2 antenna ports are matched, also, TxRU corresponding with the antenna port of first user terminal in MU is TxRU 111- 114, TxRU corresponding with the antenna port of second user terminal in MU are TxRU 115-116, with the third in MU The corresponding TxRU of the antenna port of user terminal is TxRU 117-118.

In another example as shown in Figure 2 D, when MU includes four user terminals, base station is also divided to each user terminal in MU 2 antenna ports are matched, also, TxRU corresponding with the antenna port of first user terminal in MU is TxRU 111- 112, TxRU corresponding with the antenna port of second user terminal in MU are TxRU 113-114, with the third in MU The corresponding TxRU of the antenna port of user terminal is TxRU 115-116, the antenna port with the 4th user terminal in MU Corresponding TxRU is TxRU 117-118.

In this case, the handling capacity that base station and SU/MU carry out data transmission is relatively low.This is because, When relatively fewer with the user terminal of base station communication, the quantity of still fixed the distributed antenna port in base station.In fact, with When the user terminal of base station communication is relatively fewer, relatively large number of antenna port can be distributed to user terminal use by base station, To improve the efficiency of parallel transmission and the gain of precoding, and then the handling capacity of improve data transfer, rather than fixation divides The quantity for the antenna port matched.

In the disclosure, base station can be according to the parameter information of target terminal user and all antenna ports to be allocated The parameter information of user terminal be dynamically target terminal user distribute corresponding one group of antenna port to carry out data transmission and Precoding, the efficiency of Lai Gaishan parallel transmission and the gain of precoding, thus the handling capacity of improve data transfer.Here it is mentioned To " parameter information " can be the first parameter information, such as the quantity information or data transmission parameters information of user terminal.It can Alternatively, " parameter information " mentioned herein can also be the second parameter information, such as the channel condition information of user terminal. It will be appreciated that " parameter information " mentioned herein can also be in addition to above-mentioned first parameter information, the second parameter information it It is outer, other can be used for distributing the information of antenna port for target terminal user.

Next, by describing base station referring to Fig. 3 according to the first parameter information of target terminal user and needing point First parameter information of the user terminal with antenna port is dynamically that target terminal user distributes corresponding one group of antenna port Method.Fig. 3 is the flow chart according to the method 300 for distributing antenna port of the embodiment of the present disclosure executed by base station. As shown in figure 3, base station is believed according to the first parameter of the target terminal user in one or more user terminals in step S301 First parameter information of breath and one or more user terminals selects one group of antenna port from candidate antenna port.

According to the disclosure example, one or more user terminals in step S301 can be it is one or more to Distribute the user terminal of antenna port.For example, one or more user terminals can be SU (the single user's end dispatched by base station End) or MU (multiple user terminals).

According to another example of the disclosure, the candidate antenna port in step S301 can be base station can be to user terminal point Antenna port match, idle.In addition, the quantity of the candidate antenna port in step S301 can be indicated with N, wherein N >=1 and For positive integer.

According to another example of the disclosure, the first parameter information in step S301 can be quantity information.In the first ginseng In the case of number information are quantity information, the first parameter information of the target terminal user in step S301 may include that target is used First parameter information of the quantity information of family terminal, one or more user terminals may include one or more user terminals Total quantity information.For example, the total quantity of one or more user terminals can be indicated with M, wherein M >=1 and be positive integer, target User terminal can be the i-th user terminal in one or more user terminals, wherein 1≤i≤M and be positive integer.It can manage Solution, the quantity information of target terminal user can be 1, and the total quantity information of one or more user terminals can be M.

Alternatively, the first parameter information in step S301 can also be data transmission parameters information, such as transport layer Number (the number of transmission layers) information etc..Transport layer numerical example such as can be base station and user terminal The quantity of the data flow of parallel transmission.For example, base station can according to order instruction that user terminal reports (Rank Indication, RI) quantity with the data flow of user terminal parallel transmission is determined, and according to the data flow with user terminal parallel transmission Quantity determines the transmission number of plies of user terminal.

In the case of the first parameter information is transmission number of plies information, the first ginseng of the target terminal user in step S301 Number information may include the transmission number of plies information of target terminal user, and the first parameter information of one or more user terminals can be with Total transmission number of plies information including one or more user terminals.For example, the transmission number of plies of target terminal user is L_i, accordingly Ground, total transmission number of plies of one or more user terminals are ∑_1≤i≤ML_i。

According to the disclosure example, when one or more user terminals include multiple user terminals (i.e. M > 1), The i-th user terminal in multiple user terminal all can serve as target terminal user.In this case, base station can be successively It is then corresponding to the distribution of each user terminal respectively using each user terminal in multiple user terminals as target terminal user One group of antenna port.In the disclosure, the antenna port that one group of antenna port corresponding with the i-th user terminal is included Quantity can use N_iIt indicates.

It describes successively to distribute antenna port to each user terminal according to the base station of the embodiment of the present disclosure referring to Fig. 4 Method flow chart.Fig. 4 is the base station according to the embodiment of the present disclosure successively to the side of each user terminal distribution antenna port The flow chart of method 400.As shown in figure 4, base station is according to of the first user terminal in multiple user terminals in step S401 First parameter information of one parameter information and multiple user terminals, selection is used for the first user terminal from candidate antenna port First group of antenna port.

Then, in step S402, base station can update candidate antenna port according to first group of antenna port to obtain more Candidate antenna port after new, and the first parameter information of multiple user terminals is updated to obtain more according to the first user terminal First parameter information of multiple user terminals after new.For example, base station can be by first group of antenna port from candidate antenna port Middle deletion, to obtain updated candidate antenna port.In another example base station can be by the first user terminal from multiple user terminals Middle deletion, to obtain the first parameter information of updated multiple user terminals.

Then, in step S403, base station can be according to the first parameter of the second user terminal in multiple user terminals First parameter information of information and updated multiple user terminals, selection is for the from updated candidate antenna port Second group of antenna port of two user terminals.For example, base station can according to the first parameter information of second user terminal and more First parameter information of multiple user terminals after new has selected whole for second user from updated candidate antenna port Second group of antenna port at end.

Then, base station can execute the behaviour for updating and selecting according to second user terminal and second group of antenna port again Make, to be third user terminal selecting third group antenna port.And so on, until for each use in multiple user terminals Family terminal selects corresponding one group of antenna port.

It will be appreciated that although Fig. 4 shows base station successively to the method for each user terminal distribution antenna port, originally It discloses without being limited thereto.Base station can not successively using each user terminal in multiple user terminals as target terminal user, and Corresponding one group of antenna port is distributed to each user terminal respectively.For example, base station can randomly will be in multiple user terminals Some user terminal as target terminal user, and it is given to distribute corresponding one group of antenna port.

Method 400 shown in Fig. 4 is described so that the first parameter information is quantity information as an example below.In step S401, It base station can be according to the quantity information (i.e. 1) of the first user terminal and the total quantity information (i.e. M) of multiple user terminals, from time Select first group of antenna port (the i.e. N selected in antenna port (i.e. N number of antenna port) for the first user terminal₁A antenna Port).

Then, in step S402, base station can update candidate antenna port according to first group of antenna port to obtain more Candidate antenna port after new, and the total quantity information of multiple user terminals is updated to be updated according to the first user terminal The total quantity information of multiple user terminals afterwards.For example, base station can delete first group of antenna port from candidate antenna port It removes, to obtain updated candidate antenna port (i.e. (N-N₁) a antenna port).In addition, base station can be by the first user terminal It is deleted from multiple user terminals, to obtain the total quantity information (i.e. (M-1)) of updated multiple user terminals.

Then, in step S403, base station can be according to the quantity information of the second user terminal in multiple user terminals And the total quantity information of updated multiple user terminals, selection is used for second user from updated candidate antenna port Second group of antenna port of terminal.For example, base station can be according to the quantity information (i.e. 1) of second user terminal and updated The total quantity information (i.e. (M-1)) of multiple user terminals, from updated candidate antenna port (i.e. (N-N₁) a antenna port) Middle second group of antenna port (the i.e. N selected for second user terminal₂A antenna port).

In this example, it may include certain amount of antenna that base station, which is one group of antenna port of target terminal user selection, Port, and the specific quantity is determined according to the element in specific collection.For example, base station can be according to target terminal user Quantity information and the total quantity information of one or more user terminals determine the first numerical value, base station can be according to specific collection Determine specific quantity, which is less than or equal to the first numerical value.

For example, base station can be according to the quantity information (i.e. 1) of the quantity (i.e. N) of candidate antenna port, target terminal user And the total quantity information (i.e. M) of one or more user terminals determines the first numerical value.For example, base station can be according to candidate antenna end The ratio of the total quantity (i.e. M) of the quantity (i.e. 1) and multiple user terminals of the quantity (i.e. N) and target terminal user of mouth determines First numerical value.Base station can also select one or more elements less than or equal to the first numerical value, Yi Jiji from specific collection Maximum element can also be selected from the one or more element by standing, and determine specific quantity according to maximum element.For example, Base station can determine the first numerical value and specific quantity according to following formula (1):

Wherein, N_iIndicate specific quantity, N_i' indicating that the first numerical value, S indicate specific collection, N indicates candidate antenna port Quantity, the quantity information and M of 1 expression target terminal user indicate the total quantity information of multiple user terminals.

Furthermore, it is to be understood that since base station only determines one group of antenna port every time for a user terminal, target The quantity information of user terminal is 1.Therefore, " 1 " in formula (1) can be omitted.In this case, above-mentioned formula (1) It can be improved to following formula (2):

In addition, by method 400 and above-mentioned formula (1) or (2) as shown in connection with fig. 4 it is further appreciated that working as target user When terminal is the first user terminal, the quantity of the candidate antenna port in formula (1) or (2) is N, the sum of multiple user terminals Amount information be M, and when target terminal user be second and third ... candidate antenna end when M user terminal, in formula (1) or (2) The quantity of mouth is the total quantity letter of the quantity of remaining candidate antenna port and multiple user terminals after last selection Breath is the quantity of the user terminal of antenna port remaining, to be allocated after last selection.

It is herein { 1,2,4,8,12,16,24,32 } and multiple with the quantity N=8 of candidate antenna port, specific collection S The first example of the first implementation is illustrated for the total quantity information M=3 of user terminal.For the first user end End, according to formula (2):

Therefore, base station is first group antenna port of first user terminal selecting including 2 antenna ports.

Then, base station updates candidate antenna port according to first group of antenna port to obtain updated candidate antenna port (i.e. 6 antenna ports), and after updating the total quantity information of multiple user terminals according to the first user terminal to obtain update Multiple user terminals total quantity information (i.e. 2).For second user terminal, according to formula (2):

Therefore, base station is that second user terminal has selected second group of antenna port including 2 antenna ports.

Then, base station updates candidate antenna port according to second group of antenna port to obtain updated candidate antenna port (i.e. 4 antenna ports), and after updating the total quantity information of multiple user terminals according to second user terminal to obtain update Multiple user terminals total quantity information (i.e. 1).For third user terminal, according to formula (2):

Therefore, base station is first group antenna port of the third user terminal selecting including 4 antenna ports.Therefore, when The quantity N=8 of candidate antenna port, specific collection S are the sum of { 1,2,4,8,12,16,24,32 } and multiple user terminals Measure information M=3 when, base station be the first, second, third user terminal selected respectively including 2,2,4 antenna ports first, Second, third group of antenna port.

Similarly, as the quantity N=8 of candidate antenna port, specific collection S be { 1,2,4,8,12,16,24,32 } and When the total quantity information M=2 of multiple user terminals, base station is that the first, second user terminal has selected to include 4,4 antennas respectively First, second group of antenna port of port.

Similarly, as the quantity N=8 of candidate antenna port, specific collection S be { 1,2,4,8,12,16,24,32 } and When the total quantity information M=4 of multiple user terminals, base station is that the first, second, third, fourth user terminal has selected packet respectively Include first, second, third, fourth group of antenna port of 2,2,2,2 antenna ports.

Above-mentioned example describes one or more user terminals and includes how multiple user terminals (i.e. M > 1) Shi Jizhan is Multiple user terminals select the situation of corresponding one group of antenna port respectively.According to another example of the disclosure, when one or more When a user terminal includes user terminal (i.e. a M=1), which is target terminal user.It base station can also To use above-mentioned method 400 as shown in Figure 4 and above-mentioned formula (1) or (2) for one group of antenna of a user terminal selecting Port.It is appreciated that in this case, since base station need to only give a user terminal selecting one group of antenna port, base Station does not need to execute the operation for updating candidate antenna port and the user terminal for updating antenna port to be allocated.

According to above-mentioned method 400 as shown in Figure 4 and above-mentioned formula (1) or (2), as the quantity N of candidate antenna port When=8, specific collection S are { 1,2,4,8,12,16,24,32 } and the total quantity information M=1 of multiple user terminals, base station is One group antenna port of one user terminal selecting including 8 antenna ports.

Next, describing method 400 shown in Fig. 4 so that the first parameter information is transmission number of plies information as an example.In step In S401, base station can be according to transmission number of plies information (the i.e. L of the first user terminal₁) and multiple user terminals total transport layer Number information (i.e. ∑_1≤i≤ML_i), for the first user terminal has been selected from candidate antenna port (i.e. N number of antenna port) One group of antenna port (i.e. N₁A antenna port).

Then, in step S402, base station can update candidate antenna port according to first group of antenna port to obtain more Candidate antenna port after new, and total transmission number of plies information of multiple user terminals is updated to obtain according to the first user terminal Total transmission number of plies information of updated multiple user terminals.For example, base station can be by first group of antenna port from candidate antenna It is deleted in port, to obtain updated candidate antenna port (i.e. (N-N₁) a antenna port).In addition, base station can be by first User terminal is deleted from multiple user terminals, to obtain total transmission number of plies information of updated multiple user terminals (i.e. ∑_2≤i≤ML_i)。

Then, in step S403, base station can be according to the transmission number of plies of the second user terminal in multiple user terminals Total transmission number of plies information of information and updated multiple user terminals selects to be used for from updated candidate antenna port Second group of antenna port of second user terminal.For example, base station can be according to the transmission number of plies information of second user terminal (i.e. L₂) and updated multiple user terminals total transmission number of plies information (i.e. ∑_2≤i≤ML_i), from updated candidate antenna port (i.e. (N-N₁) a antenna port) and in selected second group of antenna port (i.e. N for second user terminal₂A antenna port).

In this example, it also may include certain amount of day that base station, which is one group of antenna port of target terminal user selection, Line end mouth, and the specific quantity is determined according to the element in specific collection.For example, base station can be according to target user's end The transmission number of plies information at end and total transmission number of plies information of one or more user terminals determine that the first numerical value and base station can To determine specific quantity according to specific collection, which is less than or equal to the first numerical value.

For example, base station can quantity (i.e. N), the transmission number of plies information of target terminal user according to candidate antenna port (i.e. L₁) and multiple user terminals total transmission number of plies information (i.e. ∑_1≤i≤ML_i) determine the first numerical value.For example, base station can basis The quantity (i.e. N) of candidate antenna port and transmission number of plies information (the i.e. L of target terminal user₁) total with multiple user terminals Transmit number of plies information (i.e. ∑_1≤i≤ML_i) ratio determine the first numerical value.Base station can also select to be less than or be waited from specific collection Maximum element can also be selected from the one or more element in one or more elements of the first numerical value and base station, And specific quantity is determined according to maximum element.For example, base station can determine the first numerical value and spy according to following formula (3) Fixed number amount:

Wherein, N_iIndicate specific quantity, N_i' indicating that the first numerical value, S indicate specific collection, N indicates candidate antenna port Quantity, L_iIndicate the transmission number of plies information and ∑ of target terminal user_1≤i≤ML_iIndicate total transmission number of plies of multiple user terminals Information.

In addition, by method 400 as shown in connection with fig. 4 with above-mentioned formula (3) it is further appreciated that when target terminal user is When the first user terminal, the quantity of the candidate antenna port in formula (3) is N, total transmission number of plies information of multiple user terminals For ∑_1≤i≤ML_i, and when target terminal user is second and third ... when M user terminal, candidate antenna port in formula (3) Quantity is total transmission number of plies letter of the quantity of remaining candidate antenna port and multiple user terminals after last selection Breath is total transmission number of plies information of the user terminal of antenna port remaining, to be allocated after last selection.

It is herein { 1,2,4,8,12,16,24,32 }, Duo Geyong with the quantity N=8 of candidate antenna port, specific collection S The total quantity M=3 of family terminal and the transmission number of plies of the first, second, third user terminal are respectively real to second for 2,2,4 First example of existing mode is illustrated.For the first user terminal, according to formula (3):

Then, base station updates candidate antenna port according to first group of antenna port to obtain updated candidate antenna port (i.e. 6 antenna ports), and total transmission number of plies information of multiple user terminals is updated to obtain more according to the first user terminal Total transmission information (i.e. ∑ of multiple user terminals after new_2≤i≤ML_i).For second user terminal, according to formula (3):

Then, base station updates candidate antenna port according to second group of antenna port to obtain updated candidate antenna port (i.e. 4 antenna ports), and after updating the total quantity information of multiple user terminals according to second user terminal to obtain update Multiple user terminals total quantity information (i.e. ∑_3≤i≤ML_i).For third user terminal, according to formula (3):

Therefore, base station is first group antenna port of the third user terminal selecting including 4 antenna ports.Therefore, when The quantity N=8 of candidate antenna port, specific collection S are { 1,2,4,8,12,16,24,32 }, the total quantity M of multiple user terminals =3 and the first, second, third transmission number of plies of user terminal when being respectively 2,2,4, base station is the first, second, third user Terminal has selected first, second, third group of antenna port including 2,2,4 antenna ports respectively.

Similarly, as the quantity N=8 of candidate antenna port, specific collection S is { 1,2,4,8,12,16,24,32 }, multiple When the total quantity M=2 of user terminal and the transmission number of plies of the first, second user terminal are respectively 1,3, base station first, Two user terminals have selected first, second group of antenna port including 2,4 antenna ports respectively.

Similarly, as the quantity N=8 of candidate antenna port, specific collection S is { 1,2,4,8,12,16,24,32 }, multiple When the total quantity M=4 of user terminal and the transmission number of plies of the first, second, third, fourth user terminal are respectively 1,1,4,2, Base station be the first, second, third, fourth user terminal selected respectively including 1,1,4,2 antenna port first, second, Third, the 4th group of antenna port.

Above-mentioned example describes one or more user terminals and includes how multiple user terminals (i.e. M > 1) Shi Jizhan is Multiple user terminals select the situation of corresponding one group of antenna port respectively.According in another example of the disclosure, when one or When multiple user terminals include single user's terminal (i.e. the M=1) in SU, which is target terminal user. Above-mentioned method 400 as described in Figure 4 also can be used in base station and above-mentioned formula (3) is one group of day of a user terminal selecting Line end mouth.It is appreciated that in this case, since base station need to only give a user terminal selecting one group of antenna port, Base station does not need to execute the operation for updating candidate antenna port and updating user terminal.

It is special as the quantity N=8 of candidate antenna port according to above-mentioned method 400 as described in Figure 4 and above-mentioned formula (3) Surely set S is { 1,2,4,8,12,16,24,32 } and when the transmission number of plies of target terminal user is 2, and base station is a use Family terminal has selected one group of antenna port including 8 antenna ports.

It is described the step S301 of method 300.After step S301, in step s 302, base station passes through Selected one group of antenna port is communicated with target terminal user.For example, base station can pass through selected one group of antenna port To target terminal user transmission services data.In addition, in another example, base station can also be by selected one group of antenna port to mesh Mark user terminal Transmission system information, such as system signaling etc..

According to the disclosure example, before step S302, method 300 can also include: base station to target user The selected one group of antenna port of terminal notification.For example, base station can pass through system signaling such as wireless heterogeneous networks (Radio Resource Control, RRC) signaling etc. notifies selected one group of antenna port to target terminal user, so as to user's end End can carry out data transmission on selected antenna port.

But the present disclosure is not limited thereto.According to another example of the disclosure, base station can not also be notified to target terminal user Selected one group of antenna port.For example, base station can be in Downlink Control Information (Downlink Control Information, DCI) in notice target terminal user demodulated reference signal (Demodulation Reference Signal, DMRS port (port) information) is simultaneously demodulated.In this case, target terminal user does not need to determine base station and selects for it Antenna port, but the port that need to be only notified in base station is received.

In addition, when one or more user terminals in step S301 include a user terminal, according to the disclosure One example, after step S302, method 300 can also include: that base station uses pre-stored pre-coding matrix and CQI Carry out data transmission.For example, base station can be measured with channel of the indicating user terminal to itself, user terminal is carrying out channel CQI is generated after measurement, and reports CQI to base station, and then pre-stored pre-coding matrix can be used in base station and user is whole The CQI reported is held to carry out data transmission with user terminal.

In addition, SU-MIMO and MU-MIMO can be reduced or be controlled the number of deformation transmission by the method for precoding According to the interference between stream, so as to improve the performance of MIMO technology.Therefore, when one or more user terminal packets in step S301 When including multiple user terminals, according to the disclosure example, after step S302, method 300 can also include: base station root According to candidate antenna port and selected one group of antenna port, the pre-coding matrix for being used for target terminal user is generated.For example, It base station can be with pre-coding matrix according to the pre-stored data, candidate antenna port and selected one group of antenna port, to preparatory The pre-coding matrix of storage is reduced, to generate the pre-coding matrix for being used for target terminal user.

For example, it is assumed that k-th of user terminal in multiple user terminals is target terminal user, then base station can be according to pre- Pre-coding matrix, candidate antenna port and the selected one group of antenna port first stored, passes through following formula (4)-(6) Generate the pre-coding matrix for being used for target terminal user.

Formula (4) is to carry out letter by feeding back precoding matrix instruction (Precoding Matrix Indicator, PMI) Road is reconstructed with generator matrix H_k:

Wherein, p_kIt is the pre-stored pre-coding matrix for k-th of user terminal (for example, normalized precoding Matrix (normalized precoder) or full-scale pre-coding matrix (full-size precoder)),It is root According to selected one group of antenna port from p_kThe vector that the corresponding row of middle selection is formed is (it is appreciated that this is reduction Tx antenna Process),It isI-th column, CQI_k,iIt is Signal to Interference plus Noise Ratio (the Signal to Interference for the i-th column Plus Noise Ratio, SINR).CQI herein_k,iIt can be obtained according to conventional technical means, for example, base station can basis The intensity of the useful signal received and the ratio of the intensity of the interference signal (such as noise and interference) received obtain SINR. Formula (5) is to matrix H_kIt carries out singular value decomposition (SVD), with generator matrix

Wherein,Corresponding to matrix ∑,Corresponding to matrix O.

Formula (6) is used to calculate the pre-coding matrix W of target terminal user_D,k:

Wherein, matrixIt is matrixAssociate matrix.

In addition, when one or more user terminals in step S301 include multiple user terminals, according to the disclosure Another example, after step S302, method 300 can also include: base station according to candidate antenna port and selected one Group antenna port, determines the signal parameter of target terminal user, to adjust the configured transmission of target terminal user.Signal parameter example The SINR of such as target terminal user, the transmission power etc. of configured transmission such as target terminal user.For example, base station can basis CQI, pre-stored pre-coding matrix, candidate antenna port and selected one group of antenna port infer target terminal user SINR, so as to base station adjustment target terminal user transmission power.

For example, it is assumed that k-th of user terminal in multiple user terminals is target terminal user, then base station can basis CQI, pre-stored pre-coding matrix, candidate antenna port and selected one group of antenna port, pass through above formula (4)-(6) and following formula (7) infer the SINR of target terminal user.

Formula (7) is used to infer SINR (the i.e. CQI ' of target terminal user_k):

CQI '_k=(H_kW_D,k)^H(H_kW_D,k) formula (7)

Wherein, matrix (H_kW_D,k)^HIt is matrix (H_kW_D,k) associate matrix.

In addition, according to another example of the disclosure, before step S301 and step S302, when or later, method 300 is also It may include: that base station uses all antenna ports to send reference signal to one or more user terminals.For example, base station can be with CSI-RS is sent to one or more user terminals using all antenna ports, so that user terminal measures CSI-RS To generate the information such as CQI, PMI or RI.

By method 300 shown in Fig. 3, base station according to the first parameter information of target terminal user and can be needed The first parameter information for distributing the user terminal of antenna port is dynamically that target terminal user distributes corresponding one group of antenna end Mouthful.Fig. 5 A to Fig. 5 D shows the schematic diagram of the antenna port distributed according to the base station of the embodiment of the present disclosure to user terminal.

For example, as shown in Figure 5A, base station is assigned with 8 antenna ports to SU (single user's terminal), with antenna port phase Corresponding TxRU is TxRU 111-118.This is because, base station sends different numbers to user terminal by TxRU 111-118 According to.Following example is also similar.

In another example as shown in Figure 5 B, when MU includes two user terminals, base station is distinguished to each user terminal in MU 4,4 antenna ports are assigned with, also, TxRU corresponding with the antenna port of first user terminal in MU is TxRU 111-114, TxRU corresponding with the antenna port of second user terminal in MU are TxRU 115-118.

In another example as shown in Figure 5 C, when MU includes three user terminals, base station is distributed to each user terminal in MU 2,2,4 antenna ports, also, TxRU corresponding with the antenna port of first user terminal in MU is TxRU 112-114, TxRU corresponding with the antenna port of second user terminal in MU are TxRU 115-116, with the in MU The corresponding TxRU of the antenna port of three user terminals is TxRU 117-118.

In another example as shown in Figure 5 D, when MU includes four user terminals, base station is also divided to each user terminal in MU 2,2,2,2 antenna ports are matched, also, TxRU corresponding with the antenna port of first user terminal in MU is TxRU 111-112, TxRU corresponding with the antenna port of second user terminal in MU are TxRU 113-114, with the in MU The corresponding TxRU of the antenna port of three user terminals is TxRU 115-116, the antenna with the 4th user terminal in MU The corresponding TxRU in port is TxRU 117-118.That is, when relatively fewer with the user terminal of base station communication, base station Relatively large number of antenna port can be distributed to user terminal use, rather than fixed allocation is to the antenna port of user terminal Quantity.

Therefore, by embodiment of the disclosure, base station can the first parameter information according to target terminal user and institute The first parameter information for having the user terminal of antenna port to be allocated is dynamically that target terminal user distributes corresponding one group of day Line end mouth, and by distributed antenna port and the multiple data flows of user terminal parallel transmission, improve the effect of parallel transmission The gain of rate and precoding, and then improve the handling capacity of data transmission.

Above embodiment described base stations can be according to the first parameter information of target terminal user and all to be allocated First parameter information of the user terminal of antenna port is dynamically that target terminal user distributes corresponding one group of antenna port.Root According to another embodiment of the present disclosure, base station can also be according to the second parameter information and all days to be allocated of target terminal user Second parameter information of the user terminal of line end mouth is dynamically that target terminal user distributes corresponding one group of antenna port.

In the following, describing to be used to distribute antenna port by what base station executed according to another embodiment of the disclosure referring to Fig. 6 Method flow chart.Fig. 6 is the method for distributing antenna port executed by base station according to another embodiment of the disclosure 600 flow chart.It is identical as the details of method 300 described above with reference to Fig. 3 due to method 600, herein For simplicity, the detailed description to identical content is omitted.

As shown in fig. 6, in step s 601, base station is according to the second parameter information of multiple user terminals, from candidate antenna Select first group of antenna port and second group of antenna port in port, first group of antenna port is for the in multiple user terminals One user terminal, second group of antenna port is for the second user terminal in multiple user terminals, wherein when the first user terminal Channel quality when being better than the channel quality of second user terminal, the quantity of the antenna port in first group of antenna port is less than the The quantity of antenna port in two groups of antenna ports.

According to the disclosure example, the second parameter information can be channel condition information.Channel condition information is for example It may include channel quality information (Channel Quality Information, CQI), Reference Signal Received Power (Reference Signal Receiving Power, RSRP), data throughout etc..

For example, base station can be respectively the first use according to the channel condition information of the first user terminal and second user terminal Family terminal and second user terminal distribution antenna port.When the channel quality of the first user terminal is better than the letter of second user terminal When road quality, base station is that the quantity of antenna port included by first group of antenna port of the first user terminal distribution can be less than Base station is the quantity of antenna port included by second group of antenna port of second user terminal distribution.On the contrary, when the first use When the channel quality of family terminal is worse than the channel quality of second user terminal, base station is first group of day of the first user terminal distribution The quantity of antenna port included by line end mouth can be second group of antenna port institute of second user terminal distribution more than base station Including antenna port quantity.

Then, in step S602, base station is distinguished by selected first group of antenna port and second group of antenna port It is communicated with the first user terminal and second user terminal.For example, base station can pass through selected first group of antenna port and Two groups of antenna ports are respectively to the first user terminal and second user terminal transmission business datum.In addition, in another example, base station may be used also With by selected first group of antenna port and second group of antenna port respectively to the first user terminal and second user terminal Transmission system information, such as system signaling etc..

According to the disclosure example, before step S602, method 600 can also include: base station to the first user Terminal and the selected first group of antenna port of second user terminal notification and second group of antenna port.For example, base station can lead to System signaling such as RRC signaling etc. is crossed to the selected first group of antenna port of the first user terminal and second user terminal notification With second group of antenna port, so that the first user terminal and second user terminal can be in the enterprising line numbers of selected antenna port According to transmission.

But the present disclosure is not limited thereto.According to another example of the disclosure, base station can not also be to the first user terminal or Two user terminals notify selected one group of antenna port.For example, base station can be in Downlink Control Information (Downlink Control Information, DCI) in notify the first user terminal or second user terminal demodulated reference signal Port (port) information of (Demodulation Reference Signal, DMRS) is simultaneously demodulated.In this case, First user terminal or second user terminal do not need to determine base station as the antenna port of its selection, but need to only be notified in base station Port received.

It is distributed by the prior art to user terminal it will be appreciated that method 600 shown in fig. 6 can be used for adjusting base station Antenna port.But the present disclosure is not limited thereto.Method 600 shown in fig. 6, which can be combined with above-mentioned method shown in Fig. 3 300, to be made With.For example, base station can also use figure after antenna port is distributed to user terminal using method 300 shown in Fig. 3 in base station 600 pairs of antenna ports distributed of method shown in 6 are adjusted, to be the more suitable antenna end of user terminal quantity allotted Mouthful.It will be appreciated that method 600 shown in fig. 6 can be combined in addition to the prior art and disclosure method shown in Fig. 3 The method of other distribution antenna ports other than 300 uses.

By above-described embodiment of the disclosure, base station dynamically can be user according to the parameter information of multiple user terminals The corresponding one group of antenna port of terminal distribution improves the increasing of space diversity and precoding to carry out data transmission and precoding Benefit improves the handling capacity of data transmission.

In the following, describing the base station of the execution method 300 shown in Fig. 3 according to the embodiment of the present disclosure referring to Fig. 7.Fig. 7 shows The block diagram of the base station 700 according to the embodiment of the present disclosure is gone out.Due to the function of base station 700 and above with reference to Fig. 3 description The details of method 300 is identical, therefore herein for simplicity, omits the detailed description to identical content.

As shown in fig. 7, base station 700 includes selecting unit 710, it is configured as according to the mesh in one or more user terminals The first parameter information of user terminal and the first parameter information of one or more user terminals are marked, is selected from candidate antenna port Select one group of antenna port；And transmission unit 720, it is configured as through selected one group of antenna port and target terminal user Communication.Base station 700 can also include other units other than said two units, but due to these units and the disclosure without It closes, therefore the description of these units is omitted.

According to the disclosure example, the first parameter information can be quantity information.It is quantity in the first parameter information In the case of information, the first parameter information of target terminal user may include the quantity information of target terminal user, one or First parameter information of multiple user terminals may include the total quantity information of one or more user terminals.

Alternatively, the first parameter information can also be data transmission parameters information, such as the transmission number of plies (the number Of transmission layers) information etc..In the case of the first parameter information is transmission number of plies information, target user is whole First parameter information at end may include the transmission number of plies information of target terminal user, the first ginseng of one or more user terminals Number information may include total transmission number of plies information of one or more user terminals.

According to the disclosure example, selecting unit 710 can be according to the first user terminal in multiple user terminals The first parameter information and multiple user terminals the first parameter information, from candidate antenna port selection be used for the first user First group of antenna port of terminal.

In this example, selecting unit 710 can also update candidate antenna port according to first group of antenna port to obtain Updated candidate's antenna port, and the first parameter information of multiple user terminals is updated to obtain according to the first user terminal First parameter information of updated multiple user terminals.For example, selecting unit 710 can be by first group of antenna port from candidate It is deleted in antenna port, to obtain updated candidate antenna port.In another example base station can be by the first user terminal from multiple It is deleted in user terminal, to obtain the first parameter information of updated multiple user terminals.

In this example, selecting unit 710 can also be according to first of the second user terminal in multiple user terminals the ginseng First parameter information of number information and updated multiple user terminals selects to be used for from updated candidate antenna port Second group of antenna port of second user terminal.For example, selecting unit 710 can be believed according to the first parameter of second user terminal First parameter information of breath and updated multiple user terminals has been selected from updated candidate antenna port for the Second group of antenna port of two user terminals.

Then, selecting unit 710 can be executed again according to second user terminal and second group of antenna port update and The operation of selection, to be third user terminal selecting third group antenna port.And so on, in for multiple user terminals The corresponding one group of antenna port of each user terminal selecting.

Selecting unit 710 is described so that the first parameter information is quantity information as an example below.Selecting unit 710 can basis The quantity information (i.e. 1) of first user terminal and the total quantity information (i.e. M) of multiple user terminals, from candidate antenna port First group of antenna port (i.e. N for the first user terminal has been selected in (i.e. N number of antenna port)₁A antenna port).

Then, it is updated to obtain can to update candidate antenna port according to first group of antenna port for selecting unit 710 Candidate antenna port, and according to the first user terminal to update the total quantity information of multiple user terminals updated more to obtain The total quantity information of a user terminal.For example, selecting unit 710 can delete first group of antenna port from candidate antenna port It removes, to obtain updated candidate antenna port (i.e. (N-N₁) a antenna port).In addition, selecting unit 710 can be by first User terminal is deleted from multiple user terminals, to obtain the total quantity information (i.e. (M-1)) of updated multiple user terminals.

Then, selecting unit 710 can according to the quantity information of the second user terminal in multiple user terminals and more The total quantity information of multiple user terminals after new, selection is for second user terminal from updated candidate antenna port Second group of antenna port.For example, after selecting unit 710 can be according to the quantity information (i.e. 1) of second user terminal and update Multiple user terminals total quantity information (i.e. (M-1)), from updated candidate antenna port (i.e. (N-N₁) a antenna end Mouthful) in selected second group of antenna port (i.e. N for second user terminal₂A antenna port).

In this example, it may include certain number that selecting unit 710, which is one group of antenna port of target terminal user selection, The antenna port of amount, and the specific quantity is determined according to the element in specific collection.For example, selecting unit 710 can be with The first numerical value, base station are determined according to the total quantity information of the quantity information of target terminal user and one or more user terminals Specific quantity can be determined according to specific collection, which is less than or equal to the first numerical value.

For example, selecting unit 710 can be believed according to quantity (i.e. N), the quantity of target terminal user of candidate antenna port The total quantity information (i.e. M) of breath (i.e. 1) and one or more user terminals determines the first numerical value.For example, selecting unit 710 can According to the total quantity of quantity (i.e. 1) and multiple user terminals of the quantity (i.e. N) of candidate antenna port and target terminal user The ratio of (i.e. M) determines the first numerical value.Selecting unit 710 can also be selected from specific collection less than or equal to the first numerical value One or more elements and base station can also select maximum element from the one or more element, and according to maximum Element determines specific quantity.For example, selecting unit 710 (1) or (2) can determine the first numerical value and spy according to formula above Fixed number amount.

Next, describing selecting unit 710 so that the first parameter information is transmission number of plies information as an example.Selecting unit 710 It can be according to transmission number of plies information (the i.e. L of the first user terminal₁) and multiple user terminals total transmission number of plies information (i.e. ∑_1≤i≤ML_i), first group of antenna end for the first user terminal has been selected from candidate antenna port (i.e. N number of antenna port) Mouth (i.e. N₁A antenna port).

Then, it is updated to obtain can to update candidate antenna port according to first group of antenna port for selecting unit 710 Candidate antenna port, and after updating total transmission number of plies information of multiple user terminals according to the first user terminal to obtain update Multiple user terminals total transmission number of plies information.For example, selecting unit 710 can be by first group of antenna port from candidate antenna It is deleted in port, to obtain updated candidate antenna port (i.e. (N-N₁) a antenna port).In addition, selecting unit 710 can To delete the first user terminal from multiple user terminals, to obtain total transmission number of plies letter of updated multiple user terminals Cease (i.e. ∑_2≤i≤ML_i)。

Then, selecting unit 710 can according to the transmission number of plies information of the second user terminal in multiple user terminals with And total transmission number of plies information of updated multiple user terminals, selection is used for second from updated candidate antenna port Second group of antenna port of family terminal.For example, selecting unit 710 can be according to the transmission number of plies information of second user terminal (i.e. L₂) and updated multiple user terminals total transmission number of plies information (i.e. ∑_2≤i≤ML_i), from updated candidate antenna port (i.e. (N-N₁) a antenna port) and in selected second group of antenna port (i.e. N for second user terminal₂A antenna port).

In this example, it also may include specific that selecting unit 710, which is one group of antenna port of target terminal user selection, The antenna port of quantity, and the specific quantity is determined according to the element in specific collection.For example, selecting unit 710 can To determine according to total transmission number of plies information of the transmission number of plies information of target terminal user and one or more user terminals One numerical value and base station can determine specific quantity according to specific collection, which is less than or equal to the first numerical value.

For example, selecting unit 710 can quantity (i.e. N), the transport layer of target terminal user according to candidate antenna port Number information (i.e. L₁) and multiple user terminals total transmission number of plies information (i.e. ∑_1≤i≤ML_i) determine the first numerical value.For example, selection Unit 710 can be according to the quantity (i.e. N) of candidate antenna port and transmission number of plies information (the i.e. L of target terminal user₁) and it is more Total transmission number of plies information (i.e. ∑ of a user terminal_1≤i≤ML_i) ratio determine the first numerical value.Selecting unit 710 can also be from Selection is less than or equal to one or more elements of the first numerical value in specific collection and base station can also be from the one or more Maximum element is selected in element, and specific quantity is determined according to maximum element.For example, selecting unit 710 can be according to upper The formula (3) in face determines the first numerical value and specific quantity.

According to the disclosure example, transmission unit 720 can pass through system signaling such as wireless heterogeneous networks (Radio Resource Control, RRC) signaling etc. notifies selected one group of antenna port to target terminal user, so as to User terminal can carry out data transmission on selected antenna port.

But the present disclosure is not limited thereto.According to another example of the disclosure, transmission unit 720 can not also be to target user's end End notifies selected one group of antenna port.For example, transmission unit 720 can be in Downlink Control Information (Downlink Control Information, DCI) in notify target terminal user demodulated reference signal (Demodulation Reference Signal, DMRS) port (port) information and demodulated.In this case, target terminal user does not need to determine base station For the antenna port of its selection, but the port that need to be only notified in base station is received.

According to the disclosure example, base station 700 can also include generation unit 730, be configured as according to candidate antenna Port and selected one group of antenna port generate the pre-coding matrix for being used for target terminal user.For example, generation unit can With pre-coding matrix according to the pre-stored data, candidate antenna port and selected one group of antenna port, to pre-stored Pre-coding matrix is reduced, to generate the pre-coding matrix for being used for target terminal user.

According to the disclosure example, base station 700 can also include determination unit 740, be configured as according to candidate day Line end mouth and selected one group of antenna port, determine the signal parameter of target terminal user, to adjust target terminal user Configured transmission.Signal to Interference plus Noise Ratio (the Signal to Interference plus of signal parameter such as target terminal user Noise Ratio, SINR) etc., the transmission power etc. of configured transmission such as target terminal user.

By above-described embodiment of the disclosure, base station according to the parameter information of target terminal user and can need point The parameter information of user terminal with antenna port be dynamically target terminal user distribute corresponding one group of antenna port with into The transmission of row data and precoding, improve the gain of space diversity and precoding, improve the handling capacity of data transmission.

In the following, describing the base station of the execution method 600 shown in fig. 6 according to another embodiment of the disclosure referring to Fig. 8.Figure 8 show the block diagram of the base station 800 according to another embodiment of the disclosure.Due to the function of base station 800 and above with reference to Fig. 6 The details of the method 600 of description is identical, therefore herein for simplicity, omits the detailed description to identical content.

As shown in figure 8, base station 800 includes selecting unit 810, it is configured as being believed according to the second parameter of multiple user terminals Breath selects first group of antenna port and second group of antenna port from candidate antenna port, and first group of antenna port is for multiple The first user terminal in user terminal, second group of antenna port are used for the second user terminal in multiple user terminals, wherein Antenna end when the channel quality of the first user terminal is better than the channel quality of second user terminal, in first group of antenna port Quantity of the quantity of mouth less than the antenna port in second group of antenna port；And transmission unit 820, it is configured as by selected The first group of antenna port and second group of antenna port selected are communicated with the first user terminal and second user terminal respectively.Base station 800 can also include other units other than said two units, but since these units are unrelated with the disclosure, save The description of these units is omited.

For example, selecting unit 810 can be distinguished according to the channel condition information of the first user terminal and second user terminal For the first user terminal and second user terminal distribution antenna port.When the channel quality of the first user terminal is better than second user When the channel quality of terminal, selecting unit 810 is antenna end included by first group of antenna port of the first user terminal distribution The quantity of mouth can be less than the quantity of antenna port included by second group of antenna port that base station is second user terminal distribution. On the contrary, selecting unit 810 is first when the channel quality of the first user terminal is worse than the channel quality of second user terminal The quantity of antenna port included by first group of antenna port of user terminal distribution can be second user terminal more than base station The quantity of antenna port included by second group of antenna port of distribution.

In addition, block diagram used in the explanation of above embodiment shows the block as unit of function.These functional blocks (structural unit) is realized by any combination of hardware and/or software.In addition, the realization rate of each functional block does not limit especially It is fixed.It, can also will be in object that is, each functional block can be realized by the device physically and/or in logic combined The more than two devices mutually separated in reason and/or in logic are directly and/or indirectly (such as by wiredly and/or wirelessly) even It connects to realize by above-mentioned multiple devices.

For example, the wireless base station, user terminal etc. in one embodiment of the present invention, which can be used as, executes nothing of the invention The computer of the processing of line communication means functions.Fig. 9 is to show wireless base involved in one embodiment of the present invention It stands and the figure of an example of the hardware configuration of user terminal.It physically includes place that above-mentioned wireless base station 700 and 800, which can be used as, The computer installation of device 910, memory 920, memory 930, communication device 940, bus 950 etc. is managed to constitute.

In addition, in the following description, text as " device " also can be replaced circuit, equipment, unit etc..Wireless base 700 and 800 hardware configuration of standing may include one or more each device shown in figure, can not also include partial devices.

It for example, processor 910 only illustrates one, but may be multiple processors.Furthermore, it is possible to pass through a processing Device executes processing, simultaneously, successively or using other methods can also execute processing by more than one processor.Separately Outside, processor 910 can be installed by more than one chip.

Each function in wireless base station 700 and 800 is for example accomplished in that by by defined software (program) It is read on the hardware such as processor 910, memory 920, to make processor 910 carry out operation, to what is carried out by communication device 940 Communication is controlled, and is controlled the reading and/or write-in of the data in memory 920 and memory 930.

Processor 910 for example makes operating system carry out work to integrally control computer.Processor 910 can be with By including central processing unit (CPU, the Central with the interface of peripheral device, control device, arithmetic unit, register etc. Processing Unit) it constitutes.For example, above-mentioned access unit, maintenance unit etc. can be realized by processor 910.

In addition, processor 910 fills program (program code), software module, data etc. from memory 930 and/or communication It sets 940 and reads into memory 920, and execute various processing according to them.As program, can use executes computer above-mentioned At least part of program in the movement illustrated in embodiment.For example, the access unit of user terminal 800 can pass through guarantor It, for other functional blocks, can also be same there are being realized in memory 920 and by processor 910 come the control program to work Ground is realized.

Memory 920 is computer-readable recording medium, such as can be by read-only memory (ROM, Read Only Memory), programmable read only memory (EPROM, Erasable Programmable ROM), electric programmable read-only memory It is (EEPROM, Electrically EPROM), random access memory (RAM, Random Access Memory), other appropriate At least one of storage medium constitute.Memory 920 is referred to as register, cache, main memory (primary storage Device) etc..Memory 920 can save the executable of wireless communications method involved in an embodiment for carrying out the present invention Program (program code), software module etc..

Memory 930 is computer-readable recording medium, such as can be by floppy disc (flexible disk), soft (note Volume trade mark) disk (floppy disk), magneto-optic disk (for example, CD-ROM (CD-ROM (Compact Disc ROM) etc.), number General optic disc, blue light (Blu-ray, registered trademark) CD), moveable magnetic disc, hard disk drive, smart card, flash memory device (example Such as, card, stick (stick), cipher key drivers (key driver)), magnetic stripe, database, server, other storage mediums appropriate At least one of constitute.Memory 930 is referred to as auxilary unit.

Communication device 940 is that (transmission connects for carrying out the hardware of communication of intercomputer by wired and or wireless network Receiving unit), such as the also referred to as network equipment, network controller, network interface card, communication module etc..Communication device 940 is in order to realize for example Frequency division duplex (FDD, Frequency Division Duplex) and/or time division duplex (TDD, Time Division It Duplex), may include HF switch, duplexer, filter, frequency synthesizer etc..For example, above-mentioned transmission unit, reception Unit etc. can be realized by communication device 940.

In addition, each device such as processor 910, memory 920 is connected by the bus 950 for being communicated to information.Always Line 950 can be made of single bus, can also be made of bus different between device.

In addition, wireless base station 700 and 800 may include microprocessor, digital signal processor (DSP, Digital Signal Processor), specific integrated circuit (ASIC, Application Specific Integrated Circuit), Programmable logic device (PLD, Programmable Logic Device), field programmable gate array (FPGA, Field Programmable Gate Array) etc. hardware, some or all of each functional block can be realized by the hardware.For example, Processor 910 can be installed by least one of these hardware.

(variation)

In addition, closing the term illustrated in this manual and/or carrying out understanding required term, Ke Yiyu to this specification Term with same or like meaning is interchangeable.For example, channel and/or symbol may be signal (signaling).In addition, letter Number or message.Reference signal can also be referred to as RS (Reference Signal), can also according to be applicable in standard With referred to as pilot tone (Pilot), pilot signal etc..In addition, component carrier (CC, Component Carrier) be referred to as it is small Area, frequency carrier, carrier frequency etc..

In addition, the information illustrated in this specification, parameter etc. can be indicated with absolute value, can also with specified value Relative value indicates, can also be indicated with corresponding other information.For example, radio resource can be referred to by defined index Show.It further, can also be clear disclosed different from this specification using formula of these parameters etc..

Title in the present specification for parameter etc. is in any way all and non-limiting.For example, various Channel (physical uplink control channel (PUCCH, Physical Uplink Control Channel), physical down link Control channel (PDCCH, Physical Downlink Control Channel) etc.) and information unit can be by any suitable When title identify that therefore the various titles distributed for these various channels and information unit are any Aspect is all and non-limiting.

Information, signal for illustrating in this specification etc. can be used in various different technologies any one carry out table Show.For example, data, order, instruction, information, signal, bit, symbol, the chip etc. that may be referred in above-mentioned whole explanations It can be indicated by voltage, electric current, electromagnetic wave, magnetic field or magnetic particle, light field or photon or their any combination.

In addition, information, signal etc. can be exported from upper layer to lower layer, and/or from lower layer to upper layer.Information, signal etc. can To be inputted or be exported via multiple network nodes.

Input or information, the signal of output etc. can be stored in specific place (such as memory), can also pass through management Table is managed.Input or information, the signal of output etc. can be capped, update or supplement.Information, signal of output etc. can be with It is deleted.Information, signal of input etc. can be addressed to other devices.

The notice of information is not limited to the mode/embodiment illustrated in this specification, can also by other methods into Row.For example, the notice of information can be by physical layer signaling (for example, down link control information (DCI, Downlink Control Information), uplink control information (UCI, Uplink Control Information)), upper layer letter Enable (for example, wireless heterogeneous networks (RRC, Radio Resource Control) signaling, broadcast message (Master Information Block (MIB, Master Information Block), system information block (SIB, System Information Block) etc.), media deposit Take control (MAC, Medium Access Control) signaling), other signals or their combination implemented.

In addition, physical layer signaling is referred to as (the 1st layer/the 2nd layer) control information of L1/L2 (L1/L2 controls signal), L1 Control information (L1 controls signal) etc..In addition, RRC signaling is referred to as RRC information, such as can be established for RRC connection (RRC Connection Setup) message, RRC connection reconfiguration set (RRC Connection Reconfiguration) message Deng.In addition, MAC signaling can for example pass through MAC Control Element (MAC CE (Control Element)) Lai Tongzhi.

In addition, the notice (for example, the notice of " for X ") of provisioning information is not limited to explicitly carry out, it can also be implicitly (for example, by the notice without the provisioning information, or the notice for passing through other information) carry out.

, can be by value (the 0 or 1) Lai Jinhang indicated by 1 bit about judgement, it can also be by by true (true) or false (false) indicate true-false value (Boolean) Lai Jinhang, can also by the comparison (such as compared with specified value) of numerical value come It carries out.

No matter software is referred to as software, firmware, middleware, microcode, hardware description language, or is claimed with other titles Exhale, should all be broadly interpreted to be order, command set, code, code segment, program code, program, subprogram, software module, Application program, software application, software package, routine, subroutine, object, executable file, execution thread, step, function Deng.

In addition, software, order, information etc. can be transmitted or received via transmission medium.For example, when using cable technology (coaxial cable, optical cable, twisted pair, digital subscriber line (DSL, Digital Subscriber Line) etc.) and/or wireless skill When art (infrared ray, microwave etc.) sends software from website, server or other remote resources, these cable technologies and/or wireless Technology includes in the definition of transmission medium.

Term as " system " and " network " used in this specification may be used interchangeably.

In the present specification, " base station (BS, Base Station) ", " wireless base station ", " eNB ", " gNB ", " cell ", Term as " sector ", " cell group ", " carrier wave " and " component carrier " may be used interchangeably.Base station is sometimes also with fixed station (fixed station), NodeB, eNodeB (eNB), access point (access point), sending point, receiving point, millimicro are small The terms such as area, cell are called.

Base station can accommodate one or more (such as three) cells (also referred to as sector).When base station accommodates multiple cells When, the entire overlay area of base station can be divided into multiple smaller regions, and each smaller region can also pass through base station System (for example, indoor small base station (remote radio head (RRH, Remote Radio Head))) provides communication service. Term as " cell " or " sector " refers to the covering of base station and/or base station sub-system that communication service is carried out in the covering The a part or entirety in region.

In the present specification, " mobile station (MS, Mobile Station) ", " user terminal (user terminal) ", Term as " user apparatus (UE, User Equipment) " and " terminal " may be used interchangeably.Mobile station sometimes also by Those skilled in the art with subscriber board, mobile unit, subscriber unit, radio-cell, remote unit, mobile device, wireless device, Wireless telecom equipment, remote equipment, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held set, User agent, mobile client, client or several other terms appropriate are called.

In addition, the wireless base station in this specification can also be replaced with user terminal.For example, for by wireless base station and Communication between user terminal replaces with the structure of the communication of (D2D, Device-to-Device) between multiple user terminals, can also be with Using each mode/embodiment of the invention.At this point it is possible to by function possessed by above-mentioned wireless base station 700 and 800 as Function possessed by user terminal.In addition, the texts such as " uplink " and " downlink " also could alternatively be " side ".For example, up channel Also it could alternatively be side channel.

Equally, the user terminal in this specification can also be replaced with wireless base station.At this point it is possible to by above-mentioned user Function possessed by terminal is as function possessed by wireless base station 700 and 800.

In the present specification, the specific action for being set as carrying out by base station is according to circumstances sometimes also by its superior node (upper node) Lai Jinhang.Obviously, in being made of one or more network nodes (network nodes) with base station In network, the various movements that carry out for the communication with terminal room can by base station, in addition to base stations one Above network node is (it is contemplated that such as mobile management entity (MME, Mobility Management Entity), service Gateway (S-GW, Serving-Gateway) etc., but not limited to this) or their combination carry out.

Each mode/the embodiment illustrated in this specification may be used alone, can also be used in combination, and can also hold It switches over during row to use.In addition, the processing step of each mode/embodiment illustrated in this specification, sequence, stream Journey figure etc. is as long as no contradiction, so that it may replacement sequence.For example, the method illustrated in this manual is closed, with illustrative suitable Sequence gives various step unit, and is not limited to the particular order provided.

Each mode/the embodiment illustrated in this specification can be applied to utilize long term evolution (LTE, Long Term Evolution), senior long term evolution (LTE-A, LTE-Advanced), surmount long term evolution (LTE-B, LTE-Beyond), be super Grade third generation mobile communication systems (SUPER 3G), Advanced International Mobile Communications (IMT-Advanced), the 4th third-generation mobile communication system Unite (4G, 4th generation mobile communication system), the 5th Generation Mobile Communication System (5G, 5th Generation mobile communication system), following wireless access (FRA, the Future Radio Access), new wireless access technology (New-RAT, Radio Access Technology), new wireless (NR, New Radio), New wireless access (NX, New radio access), new generation of wireless access (FX, Future generation radio Access), global system for mobile communications (GSM (registered trademark), Global System for Mobile Communications), CDMA accesses 4000 (CDMA4000), super mobile broadband (UMB, Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra wide band (UWB, Ultra-WideBand), bluetooth (Bluetooth (registered trademark)), other channel radios appropriate The system of letter method and/or the Successor-generation systems extended based on them.

" according to " used in this specification is such to be recorded, as long as not being expressly recited in other paragraphs, and unexpectedly Taste " according only to ".In other words, " according to " such record refers to both " according only to " and " according at least to ".

Any reference used in this specification to the unit for using the titles such as " first ", " second ", non-comprehensive limit The quantity or sequence of these fixed units.These titles can be used as the facilitated method for distinguishing more than two units and in this specification Middle use.Therefore, be not meant to two units or first unit only can be used must for the reference of first unit and second unit If must be taken the lead with dry form in second unit.

Term as " judgement (determination) (determining) " used in this specification includes diversified sometimes Movement.For example, about " judgement (determination) ", it can be by calculating (calculating), reckoning (computing), processing (processing), (deriving), investigation (investigating), search (looking up) (such as table, data are derived Search in library or other data structures), confirmation (ascertaining) etc. is considered as carrying out " judgement (determination) ".In addition, closing In " judgement (determinations) ", can also by reception (receiving) (such as receiving information), transmission (transmitting) (such as Send information), input (input), output (output), access (accessing) (such as data in access memory) etc. view To be to carry out " judgement (determination) ".In addition, about " judgement (determination) ", it can also be by solution (resolving), selection (selecting), (choosing) is selected, (establishing) is established, compares (comparing) etc. and be considered as " sentence Disconnected (determination) ".That is, several movements can be considered as carrying out " judgement (determination) " about " judgement (determination) ".

" (connected) of connection " used in this specification, " in conjunction with (coupled) " as term or it Any deformation refer to direct or indirect any connection or combination between two or more units, may include with Lower situation: between two units of mutual " connection " or " in conjunction with ", there are one or more temporary locations.Between unit In conjunction with or connection can be physically, be also possible in logic, or the combination that both can also be.For example, " connection " Also it could alternatively be " access ".When using in the present specification, it is believed that two units be by using one or one with On electric wire, cable, and/or printing electrical connection, and as several non-limiting and non-exclusive example, by using With radio frequency field, microwave region, and/or the electromagnetic energy of wavelength in light (both visible light and black light) region etc., quilt It mutually " connects " or " in conjunction with ".

Used in this specification or claims " including (including) ", " include (comprising) " and When their deformation, these terms and term " having " are equally open.Further, in this specification or claim Term used in book " or (or) " is not exclusive or.

It describes the invention in detail above, but it will be apparent to a person skilled in the art that the present invention not limits The fixed embodiment illustrated in this manual.The present invention do not depart from it is of the invention determined by the record of claims Under the premise of objective and range, modifications and changes mode can be used as to implement.Therefore, the record of this specification is said with example For the purpose of bright, for the purpose of the present invention not with the meaning of any restrictions.

Claims

1. a kind of method for distributing antenna port, is executed by base station, which comprises

According to the first parameter information of the target terminal user in one or more user terminals and one or more of use First parameter information of family terminal selects one group of antenna port from candidate antenna port；And

It is communicated by selected one group of antenna port with the target terminal user.

2. the method as described in claim 1, wherein the first parameter information of the target terminal user includes that the target is used The quantity information of family terminal, the first parameter information of one or more of user terminals include that one or more of users are whole The total quantity information at end.

3. the method as described in claim 1, wherein the first parameter information of the target terminal user includes that the target is used The transmission number of plies information of family terminal, the first parameter information of one or more of user terminals include one or more of use Total transmission number of plies information of family terminal.

4. method as described in any one of claims 1 to 3, wherein when one or more of user terminals include multiple users When terminal, the first parameter information of the target terminal user according in one or more user terminals and it is one or First parameter information of multiple user terminals, from candidate antenna port select one group of antenna port include:

According to the first parameter information of the first user terminal in the multiple user terminal and the multiple user terminal First parameter information, selection is used for first group of antenna port of first user terminal from the candidate antenna port；

The candidate antenna port is updated according to first group of antenna port to obtain updated candidate antenna port, and The first parameter information of the multiple user terminal is updated according to first user terminal to obtain updated multiple users First parameter information of terminal；And

According to the first parameter information of the second user terminal in the multiple user terminal and updated multiple use First parameter information of family terminal, from the updated candidate antenna port selection for the second user terminal the Two groups of antenna ports.

5. method as described in any one of claims 1 to 3, wherein one group of antenna port includes certain amount of antenna end Mouthful, the specific quantity is determined according to the element in specific collection.

6. method as claimed in claim 5, wherein the target terminal user according in one or more user terminals First parameter information of the first parameter information and one or more of user terminals selects one group of day from candidate antenna port Line end mouth includes:

According to the first parameter information of the target terminal user in one or more user terminals and one or more of use First parameter information of family terminal determines the first numerical value；

The specific quantity is determined according to the specific collection, wherein the specific quantity is less than or equal to first numerical value.

7. the method as described in claim 1, further includes:

According to the candidate antenna port and one group of antenna port, the precoding for being used for the target terminal user is generated Matrix.

8. the method as described in claim 1, further includes:

According to the candidate antenna port and one group of antenna port, the signal parameter of the target terminal user is determined, To adjust the configured transmission of the target terminal user.

9. a kind of method for distributing antenna port, is executed by base station, which comprises

According to the second parameter information of multiple user terminals, first group of antenna port and second group are selected from candidate antenna port Antenna port, first group of antenna port is for the first user terminal in the multiple user terminal, second group of day Line end mouth is for the second user terminal in the multiple user terminal, wherein when the channel quality of first user terminal is excellent When the channel quality of the second user terminal, the quantity of the antenna port in first group of antenna port is less than described the The quantity of antenna port in two groups of antenna ports；And

By selected first group of antenna port and second group of antenna port respectively with first user terminal and described Two user terminal communications.

10. a kind of for distributing the base station of antenna port, the base station includes:

Selecting unit, be configured as according to the first parameter information of the target terminal user in one or more user terminals and First parameter information of one or more of user terminals selects one group of antenna port from candidate antenna port；And

Transmission unit is configured as communicating by selected one group of antenna port with the target terminal user.

11. base station as claimed in claim 10, wherein the first parameter information of the target terminal user includes the target The quantity information of user terminal, the first parameter information of one or more of user terminals include one or more of users The total quantity information of terminal.

12. base station as claimed in claim 10, wherein the first parameter information of the target terminal user includes the target The transmission number of plies information of user terminal, the first parameter information of one or more of user terminals includes one or more of Total transmission number of plies information of user terminal.

13. such as the described in any item base stations of claim 10 to 12, wherein the selecting unit is also configured to

14. such as the described in any item base stations of claim 10 to 12, wherein one group of antenna port includes certain amount of day Line end mouth, the specific quantity are determined according to the element in specific collection.

15. base station as claimed in claim 14, wherein the selecting unit is also configured to

16. base station as claimed in claim 10, the base station further includes generation unit, is configured as according to the candidate antenna Port and one group of antenna port generate the pre-coding matrix for being used for the target terminal user.

17. base station as claimed in claim 10, the base station further includes determination unit, is configured as according to the candidate antenna Port and one group of antenna port, determine the signal parameter of the target terminal user, whole to adjust the target user The configured transmission at end.

18. a kind of for distributing the base station of antenna port, the base station includes:

Selecting unit is configured as the second parameter information according to multiple user terminals, selects first from candidate antenna port Group antenna port and second group of antenna port, first group of antenna port is for the first user in the multiple user terminal Terminal, second group of antenna port is for the second user terminal in the multiple user terminal, wherein when first use The antenna end when channel quality of family terminal is better than the channel quality of the second user terminal, in first group of antenna port Quantity of the quantity of mouth less than the antenna port in second group of antenna port；And

Transmission unit is configured as through selected first group of antenna port and second group of antenna port respectively with described first User terminal and second user terminal communication.