CN111193531B - Method and device for improving user channel quality under Massive MIMO - Google Patents

Method and device for improving user channel quality under Massive MIMO Download PDF

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CN111193531B
CN111193531B CN201811270287.4A CN201811270287A CN111193531B CN 111193531 B CN111193531 B CN 111193531B CN 201811270287 A CN201811270287 A CN 201811270287A CN 111193531 B CN111193531 B CN 111193531B
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space division
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division scheduling
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CN111193531A (en
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罗文�
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • H04B7/043—Power distribution using best eigenmode, e.g. beam forming or beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a method for improving user channel quality under Massive MIMO, which comprises the steps of obtaining scheduling types of users, wherein the scheduling types comprise space division scheduling and frequency division scheduling; the energy of the activated wave beam of the space division scheduling user is improved, and the energy of the inactivated wave beam of the space division scheduling user is reduced; and fixing the resource block allocation positions of the space division scheduling users and the frequency division scheduling users. The scheme can solve the problems of energy jump of the cell reference signal among user resource blocks and influence on the user channel estimation quality, improve the user channel measurement quality and increase the network capacity.

Description

Method and device for improving user channel quality under Massive MIMO
Technical Field
The application relates to the field of data communication, in particular to a technology for improving channel quality under MassiveMIMO.
Background
With the continuous development of the fourth generation (4G) mobile communication system, Massive MIMO (Multiple-Input-Multiple-Output) will become an important technology for increasing network capacity. The Massive MIMO technology divides a cell into a plurality Of prefabricated wave beam covers according to a DOA (Departure Angle) range, an activated wave beam set is selected for a user according to a certain strategy, a base station sends data to the user through wave beams in the activated wave beam set, and meanwhile, the user with the activated wave beam set without intersection can spatially multiplex the same time frequency resource to improve the network capacity. Furthermore, by improving the energy of the activated beam and reducing the energy of the non-activated beam, the performance of the space division user can be effectively improved, and the network capacity is increased.
In an LTE (Long Term Evolution) multi-antenna communication system, downlink TM3(Transmission Mode 3) and TM4(Transmission Mode 4, Transmission Mode 4) use broadcast weights, multiple antenna port beams are superimposed to form omni-directional coverage, and the superimposed energy of the beams in each direction is uniformly distributed. When the energy of the activated beam is increased, the superposed energy of each beam is not uniformly distributed any more due to the change of the weight of the antenna, and the broadcasting characteristic of all the superposed beams is influenced.
In the background, the reasonable configuration of scheduling resources under Massive MIMO is very critical, and directly affects the performance and capacity of the network. At present, only the scene of co-frequency interference is considered in the configuration of Resource Blocks (RB) (resource Block), the positions of the resource blocks are allocated by newly transmitted scheduling from low frequency to high frequency in a bandwidth, and the positions of the resource blocks are allocated randomly by retransmission scheduling. However, no effective solution exists for the scene of improving the energy of the activated beam of the space division user. Due to the improvement of the energy of the activated beam, the superposed energy of all the beams is not uniformly distributed in space any more, which causes the energy of the reference signal between resource blocks to jump, thereby influencing the estimation quality of the user channel, increasing the error rate and reducing the network capacity.
Disclosure of Invention
The application provides a method for improving user channel quality under Massive MIMO, which aims to solve the problems that the energy jump of cell reference signals among user resource blocks influences the user channel estimation quality, improve the user channel measurement quality and increase the network capacity.
In order to solve the above problems, the following technical solutions are adopted in the present application:
a method for improving user channel quality under Massive MIMO comprises the following steps: acquiring a scheduling type of a user, wherein the scheduling type comprises space division scheduling and frequency division scheduling; the energy of the activated wave beam of the space division scheduling user is improved, and the energy of the inactivated wave beam of the space division scheduling user is reduced; and fixing the resource block allocation positions of the space division scheduling users and the frequency division scheduling users.
Preferably, the obtaining of the scheduling type of the user includes: acquiring the scheduling type according to the scheduling information of the base station side; the scheduling information comprises space division pairing information; and according to the space division pairing information of the base station side, acquiring the scheduling type of the user which can be successfully paired as space division scheduling, and acquiring the scheduling type of the user which cannot be successfully paired as frequency division scheduling.
Preferably, the resource block allocation locations of the fixed space division scheduling users and the frequency division scheduling users include: allocating the same resource block position to the space division scheduling user; and allocating the resource block position to the frequency division scheduling user, which is different from the space division scheduling user and other frequency division scheduling users.
Preferably, the resource block allocation locations of the fixed space division scheduling user and the frequency division scheduling user further include: within the bandwidth, the positions of the space division scheduling user resource blocks are distributed according to the frequency from high to low, and the positions of the frequency division scheduling user resource blocks are distributed according to the frequency from low to high; or within the bandwidth, the positions of the space division scheduling user resource blocks are distributed according to the frequency from low to high, and the positions of the frequency division scheduling user resource blocks are distributed according to the frequency from high to low.
An apparatus for improving user channel quality under Massive MIMO, comprising: the device comprises an acquisition unit, a scheduling unit and a scheduling unit, wherein the scheduling type of a user is acquired and comprises space division scheduling and frequency division scheduling; the energy control unit is used for improving the energy of the activated beam of the space division scheduling user and reducing the energy of the non-activated beam of the space division scheduling user; and the allocation unit is used for fixing the allocation positions of the resource blocks of the space division scheduling users and the frequency division scheduling users.
Preferably, the obtaining unit obtains the scheduling type according to scheduling information of a base station side; the scheduling information comprises space division pairing information; the obtaining unit obtains the scheduling type of the user which can be successfully paired as space division scheduling and obtains the scheduling type of the user which can not be successfully paired as frequency division scheduling according to the space division pairing information at the base station side.
Preferably, the allocating unit allocates the same resource block position to the space division scheduling users; and allocating the resource block position to the frequency division scheduling user, which is different from the space division scheduling user and other frequency division scheduling users.
Preferably, the allocation unit allocates the space division scheduling user resource block location to the frequency division scheduling user resource block location from high to low according to the frequency within the bandwidth, and allocates the space division scheduling user resource block location to the frequency division scheduling user resource block location from low to high; or within the bandwidth, the positions of the space division scheduling user resource blocks are distributed according to the frequency from low to high, and the positions of the frequency division scheduling user resource blocks are distributed according to the frequency from high to low.
The above-mentioned at least one technical scheme that this application adopted can reach following beneficial effect:
according to the method for improving the user channel quality under Massive MIMO, the energy of the activated wave beams is improved, the energy of the non-activated wave beams is reduced, the performance of an air separation user is effectively improved, meanwhile, the positions of the fixed air separation user and the frequency division user resource block are utilized, the superposed energy of the wave beams of the frequency division user resource block is kept unchanged, the superposed energy of the wave beams of the air separation user resource block is increased, the energy jump of cell reference signals among user resource blocks is reduced, the user channel measurement quality is improved, and the network capacity is increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flowchart of a method for improving user channel quality under Massive MIMO according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an apparatus for improving user channel quality under Massive MIMO according to an embodiment of the present disclosure.
Description of reference numerals:
101-acquisition unit, 102-energy control unit, 103-distribution unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present application discloses a flowchart of a method for improving user channel quality under Massive MIMO, including the following steps:
and 11, acquiring the scheduling types of the users, wherein the scheduling types comprise space division scheduling and frequency division scheduling.
And acquiring the scheduling type of the user according to the scheduling information of the base station side. The scheduling information comprises space division pairing information, according to the space division pairing information of the base station side, a user which can be successfully paired is a space division scheduling user, and the scheduling type of the user is acquired as space division scheduling; and the user which is not successfully paired is a frequency division scheduling user, and the scheduling type of the user is acquired to be frequency division scheduling.
And step 12, improving the energy of the activated beam of the space division scheduling user and reducing the energy of the non-activated beam of the space division scheduling user.
In one embodiment of the application, an index of a beam with the strongest energy of an activated beam of a space-division user is selected, the beam amplitude of the index is multiplied by (1+ n x alpha), and the amplitudes of other non-activated beams are multiplied by (1-m x alpha), wherein n, m and alpha can be matched.
Alternatively, let n be 3, m be 1, and alpha be 1/16. The active beam of the spatial division scheduling user UE1 is [1,2], and the inactive beam is [3,4,5,6,7,8 ]. Wherein the active beam [1] is the strongest in energy.
Then:
Energybeam1_new＝Energybeam1_old*(1+3/16)，
Energybeam2_new＝Energybeam2_old，
Energybeam3～8_new＝Energybeam3～8_old(1-1/16)。
in another embodiment of the present application, the beam amplitude of the user-activated beam for spatial division scheduling is multiplied by (1+ n x alpha), and the other non-activated beam amplitudes are multiplied by (1-m x alpha), where n, m, alpha are available.
Alternatively, n is 1, m is 1, and alpha is 1/16. The active beam of the spatial division scheduling user UE1 is [1,2], and the inactive beam is [3,4,5,6,7,8 ]. Wherein the active beam [1] is the strongest in energy.
Then:
Energybeam1_new＝Energybeam1_old*(1+1/16)，
Energybeam2_new＝Energybeam2_old*(1+1/16)，
Energybeam3～8_new＝Energybeam3～8_old(1-1/16)。
and step 13, fixing the resource block allocation positions of the space division scheduling users and the frequency division scheduling users.
Allocating the same resource block position to a space division scheduling user; and allocating the resource block positions to the frequency division scheduling users, which are different from the space division scheduling users and other frequency division scheduling users.
Within the bandwidth, allocating the positions of the resource blocks of the space division scheduling users from high to low according to the frequency, and allocating the positions of the resource blocks of the frequency division scheduling users from low to high; or within the bandwidth, the positions of the resource blocks of the space division scheduling users are distributed according to the frequency from low to high, and the positions of the resource blocks of the frequency division scheduling users are distributed according to the frequency from high to low.
In one embodiment of the present application, within a bandwidth, the resource block positions of space division scheduling users are allocated from high to low according to frequency, and the resource block positions of frequency division scheduling users are allocated from low to high.
Optionally, the bandwidth is set to be 20M, and the resource block frequencies are numbered from low to high by 0-99. At the current scheduling time, four space division scheduling users are respectively UE1, UE2, UE3 and UE 4; there are two frequency-division scheduled users, UE5 and UE6, respectively.
The UE1 and the UE2 are arranged to be mutually separated and allocated with the same resource blocks, the number of the allocated resource blocks of the UE1 is 80-99, and the number of the allocated resource blocks of the UE2 is 80-99.
The UE3 and the UE4 are arranged to be mutually separated and allocated with the same resource blocks, the number of the allocated resource blocks of the UE3 is 60-79, and the number of the allocated resource blocks of the UE4 is 60-79.
For two frequency division scheduling users, the number of the resource blocks allocated by the UE5 is 0-19, and the number of the resource blocks allocated by the UE6 is 20-39.
In the embodiment, resource block numbers 60-99 are allocated to space division scheduling users, and activated beam power is increased, within this frequency band, the energy change of CRS (Cell Reference Signal) among resource blocks at the scheduling time is small; the adjacent scheduling time, the millisecond-level time granularity and the service model are not changed greatly basically, the resource block numbers of 60-99 are distributed to the space division scheduling users for use approximately, and therefore the energy of the CRS of each resource block between the adjacent scheduling times is basically stable.
Resource block numbers 0-39 are allocated to frequency division scheduling users for use, the power of an activated beam is not increased, and the energy change of CRSs (common reference signals) among resource blocks at the scheduling moment is very small in the frequency band range; the adjacent scheduling time, the millisecond-level time granularity and the service model are not changed greatly basically, the resource block number is about 0-39, and the resource block number is still distributed to a frequency division scheduling user for use, so the CRS energy of each resource block between the adjacent scheduling times is basically stable.
In another embodiment of the present application, within a bandwidth, the resource block locations of space division scheduling users are allocated from low to high according to frequency, and the resource block locations of frequency division scheduling users are allocated from high to low.
Optionally, the bandwidth is set to be 20M, and the resource block frequencies are numbered from low to high by 0-99. At the current scheduling time, four space division scheduling users are respectively UE1, UE2, UE3 and UE 4; there are two frequency-division scheduled users, UE5 and UE6, respectively.
The UE1 and the UE2 are arranged to be mutually separated and allocated with the same resource blocks, the number of the allocated resource blocks of the UE1 is 0-19, and the number of the allocated resource blocks of the UE2 is 0-19.
The UE3 and the UE4 are arranged to be mutually separated and allocated with the same resource blocks, the number of the allocated resource blocks of the UE3 is 20-39, and the number of the allocated resource blocks of the UE4 is 20-39.
For two frequency division scheduling users, the number of the resource blocks allocated by the UE5 is 80-99, and the number of the resource blocks allocated by the UE6 is 60-79.
In the embodiment, resource block numbers 0-39 are allocated to space division scheduling users for use, the power of an activated beam is increased, and the energy change of CRSs (common reference signals) among resource blocks at the scheduling time is small in the frequency band range; the method comprises the following steps that at the adjacent scheduling time, the time granularity of millisecond level and the service model are not changed greatly basically, the resource block number is approximately 0-39, the resource block number is also distributed to a space division scheduling user for use, and therefore the energy of CRS of each resource block between the adjacent scheduling time is basically stable.
Resource block numbers of 60-99 are distributed to frequency division scheduling users for use, the power of an activated beam is not increased, and the energy change of CRSs (common reference signals) among resource blocks at the scheduling moment is small in the frequency band range; the adjacent scheduling time, the millisecond-level time granularity and the service model are not changed greatly basically, the resource block numbers of 60-99 are distributed to the frequency division scheduling users for use approximately, and therefore the energy of the CRS of each resource block between the adjacent scheduling times is basically stable.
Referring to fig. 2, a schematic structural diagram of an apparatus for improving user channel quality under Massive MIMO disclosed in the present application includes:
the obtaining unit 101 obtains scheduling types of users, where the scheduling types include space division scheduling and frequency division scheduling.
Further, the obtaining unit 101 obtains the scheduling type of the user according to the scheduling information of the base station side. The scheduling information includes space division pairing information. The obtaining unit 101 obtains the scheduling type of the user as space division scheduling according to the space division pairing information at the base station side, wherein the user which can be successfully paired is a space division scheduling user; and the user which is not successfully paired is a frequency division scheduling user, and the scheduling type of the user is acquired to be frequency division scheduling.
The energy control unit 102 increases the energy of the active beam of the space division scheduling user and decreases the energy of the inactive beam of the space division scheduling user.
The allocation unit 103 fixes resource block allocation positions of space division scheduling users and frequency division scheduling users.
Further, an allocating unit 103 allocates the same resource block position to the space division scheduling users; and allocating the resource block positions to the frequency division scheduling users, which are different from the space division scheduling users and other frequency division scheduling users.
Further, the allocating unit 103 allocates the space division scheduling user resource block positions according to the frequency from high to low and allocates the frequency division scheduling user resource block positions according to the frequency from low to high within the bandwidth; or within the bandwidth, the positions of the resource blocks of the space division scheduling users are distributed according to the frequency from low to high, and the positions of the resource blocks of the frequency division scheduling users are distributed according to the frequency from high to low.
In this context, the features of the individual preferred embodiments can be combined to form embodiments, which are within the scope of the disclosure, as long as they are not contradictory.
In the present specification, the respective preferred embodiments are only described with emphasis on differences from other preferred embodiments, and the respective preferred embodiments may be arbitrarily combined as long as they do not conflict with each other, and the embodiments formed by combining are also within the scope disclosed in the present specification, and in view of the brevity of the text, the embodiments formed by combining are not separately described herein.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (8)

1. A method for improving user channel quality under Massive MIMO is characterized by comprising the following steps: acquiring a scheduling type of a user, wherein the scheduling type comprises space division scheduling and frequency division scheduling; the energy of the activated wave beam of the space division scheduling user is improved, and the energy of the inactivated wave beam of the space division scheduling user is reduced; and fixing the resource block allocation positions of the space division scheduling users and the frequency division scheduling users.
2. The method of claim 1, wherein the obtaining the scheduling type of the user comprises: acquiring the scheduling type according to the scheduling information of the base station side; the scheduling information comprises space division pairing information; and according to the space division pairing information of the base station side, acquiring the scheduling type of the user which can be successfully paired as space division scheduling, and acquiring the scheduling type of the user which cannot be successfully paired as frequency division scheduling.
3. The method of claim 1, wherein the resource block allocation locations of the fixed space division scheduled users and frequency division scheduled users comprise: allocating the same resource block position to the space division scheduling user; and allocating the resource block position to the frequency division scheduling user, which is different from the space division scheduling user and other frequency division scheduling users.
4. The method of claim 1 or 3, wherein the resource block allocation locations of the fixed space-division scheduled users and frequency-division scheduled users further comprise: within the bandwidth, the positions of the space division scheduling user resource blocks are distributed according to the frequency from high to low, and the positions of the frequency division scheduling user resource blocks are distributed according to the frequency from low to high; or within the bandwidth, the positions of the space division scheduling user resource blocks are distributed according to the frequency from low to high, and the positions of the frequency division scheduling user resource blocks are distributed according to the frequency from high to low.
5. An apparatus for improving user channel quality under Massive MIMO, comprising: the device comprises an acquisition unit, a scheduling unit and a scheduling unit, wherein the scheduling type of a user is acquired and comprises space division scheduling and frequency division scheduling; the energy control unit is used for improving the energy of the activated beam of the space division scheduling user and reducing the energy of the non-activated beam of the space division scheduling user; and the allocation unit is used for fixing the allocation positions of the resource blocks of the space division scheduling users and the frequency division scheduling users.
6. The apparatus of claim 5, wherein the obtaining unit obtains the scheduling type according to scheduling information on a base station side; the scheduling information comprises space division pairing information; the obtaining unit obtains the scheduling type of the user which can be successfully paired as space division scheduling and obtains the scheduling type of the user which can not be successfully paired as frequency division scheduling according to the space division pairing information at the base station side.
7. The apparatus of claim 5, wherein the allocation unit is configured to allocate the same resource block locations to the space division scheduled users; and allocating the resource block position to the frequency division scheduling user, which is different from the space division scheduling user and other frequency division scheduling users.
8. The apparatus according to claim 5 or 7, wherein the allocation unit allocates the space division scheduling user resource block location from high to low in frequency and allocates the frequency division scheduling user resource block location from low to high in bandwidth; or within the bandwidth, the positions of the space division scheduling user resource blocks are distributed according to the frequency from low to high, and the positions of the frequency division scheduling user resource blocks are distributed according to the frequency from high to low.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102104947A (en) * 2009-12-21 2011-06-22 电信科学技术研究院 Power allocation method and base station in space division system
CN104684055A (en) * 2015-02-12 2015-06-03 南京邮电大学 DTX power optimization method for orthogonal frequency division and air division hybrid MIMO-OFDM system
CN107846266A (en) * 2016-09-18 2018-03-27 中兴通讯股份有限公司 Running time-frequency resource dispatching space division method and apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100836141B1 (en) * 2005-12-21 2008-06-09 삼성전자주식회사 Apparatus and method for allocating power in a space division multiple access system
JP5080607B2 (en) * 2010-04-05 2012-11-21 株式会社エヌ・ティ・ティ・ドコモ Radio base station apparatus and transmission power control method
WO2012065278A1 (en) * 2010-11-15 2012-05-24 Telefonaktiebolaget L M Ericsson (Publ) Two-dimensional ue pairing in mimo systems
WO2012152306A1 (en) * 2011-05-06 2012-11-15 Nokia Siemens Networks Oy Arrangements for controlling antennas
CN103516410B (en) * 2012-06-19 2018-03-02 中兴通讯股份有限公司 One kind realizes downlink data launching technique and device using active antenna system
CN104052535B (en) * 2014-06-23 2017-06-09 东南大学 The extensive mimo system multiuser transmission method of millimeter wave based on space division multiple access Yu AF panel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102104947A (en) * 2009-12-21 2011-06-22 电信科学技术研究院 Power allocation method and base station in space division system
CN104684055A (en) * 2015-02-12 2015-06-03 南京邮电大学 DTX power optimization method for orthogonal frequency division and air division hybrid MIMO-OFDM system
CN107846266A (en) * 2016-09-18 2018-03-27 中兴通讯股份有限公司 Running time-frequency resource dispatching space division method and apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FDD Massive MIMO技术中多用户空分复用的研究;谢武生等，;《移动通信》;20180415;第42卷(第4期);第12-16页 *
User grouping method for downlink beamforming in massive MIMO system;Xun Zou等，;《2014 IEEE 3rd International Conference on Cloud Computing and Intelligence Systems》;20141129;第228-233页 *

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