CN110868751B - Spatial multiplexing method and device - Google Patents

Spatial multiplexing method and device Download PDF

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CN110868751B
CN110868751B CN201810983039.8A CN201810983039A CN110868751B CN 110868751 B CN110868751 B CN 110868751B CN 201810983039 A CN201810983039 A CN 201810983039A CN 110868751 B CN110868751 B CN 110868751B
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downlink
user
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CN110868751A (en
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刘杨
苏进喜
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • 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
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems

Abstract

The invention discloses a downlink space multiplexing method and a device, which are used for carrying out space division scheduling and controlling the transmitting power of each transmitting and receiving point by improving the accuracy of the downlink space isolation. The space multiplexing method and the space multiplexing device provided by the invention comprise the following steps: sending different downlink measurement signals DLRS under different transmitting and receiving points TRP, wherein the different DLRSs occupy different time frequency resources; and determining the downlink spatial separation degree of the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal.

Description

Spatial multiplexing method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a spatial multiplexing method and apparatus.
Background
Distributed antennas are distributed, and due to factors such as distances between antennas and obstructions, power differences of signals of the distributed antennas received by the same receiving point can be caused, and the power differences can be referred to as spatial isolation among the distributed antennas of the receiving point. When the spatial separation degree between every two distributed antennas is large enough, even if the same time-frequency resource is multiplexed between the two distributed antennas or among a plurality of distributed antennas for parallel transmission of multi-stream data, the mutual interference is weak or even can be ignored, so that the efficiency of parallel transmission of multi-channel data is ensured.
In the prior art, a base station generally measures an uplink signal of a terminal to deduce a downlink spatial interval; or when the network is planned, the downlink isolation at any position among the distributed antennas is ensured to be large enough, and then the distributed antennas capable of space division are statically configured, and when the distributed antennas are applied, the base station only needs to simply judge the distributed antennas where the users are located and does not care about the space isolation degree between the distributed antennas and other antennas in a cell, and space division scheduling can be carried out according to the statically configured space division antennas; or space division is abandoned, and a plurality of distributed antennas transmit data of the same user.
The method for estimating the downlink spatial isolation based on the measurement of the uplink signal is suitable for a Time Division Duplex (TDD) system, but the scheme is not completely suitable for a Frequency Division Duplex (FDD) system due to different uplink and downlink Frequency bands. Even if the TDD system uses the uplink test to judge the downlink isolation degree, the accuracy is not very high, and the actual application effect of the 4G isolation degree judgment based on the Reference Signal (SRS) is not satisfactory. After all, the uplink and downlink channels are not completely the same, and various interference analyses in practice find that the uplink and downlink interference are usually inconsistent. Except that abnormal factors such as base station timing synchronization deviation, an interference device, out-of-band interference of adjacent frequency bands of different operators in the same system, stray interference, harmonic interference, intermodulation interference and the like can cause different uplink and downlink interference, different interference conditions can be embodied in uplink and downlink due to different reasons of the uplink and downlink interference caused in a wireless system. Uplink interference usually comes from a terminal of a neighboring cell, and downlink interference usually comes from different signals of a base station of the neighboring cell or different antennas of the same cell. The downlink interference comes from a base station of the same system, and the downlink interference of a fixed place is usually fixed and has small change under the condition of stable cell power; the uplink interference is affected by factors such as terminal movement, uplink scheduling, uplink power control, initial access, uplink out-of-step terminal and the like, the uplink interference forming factors are very complex, and the uplink interference usually changes frequently and greatly. Therefore, the accuracy of uplink measurement and the judgment of space division isolation are also influenced.
The scheme that downlink isolation at any position among the distributed antennas is ensured to be large enough during network planning, and then the distributed antennas which can be subjected to space division are statically configured has the defects of poor adaptability, huge workload in earlier stages such as network planning and the like, and inconvenience in deployment. The distributed antenna system which abandons space division is necessarily far inferior to the distributed space division system in cell throughput, spectrum efficiency and service bearing capacity.
Disclosure of Invention
The embodiment of the application provides a spatial multiplexing method and a spatial multiplexing device, which are used for performing space division scheduling and controlling the transmitting power of each transmitting and receiving point by improving the accuracy of downlink spatial isolation.
The spatial multiplexing method provided by the embodiment of the application comprises the following steps:
sending different Downlink Reference signals (DLRS) at different Transmission/Reception points (TRPs); wherein different DLRSs occupy different time-frequency resources; and determining the downlink spatial separation degree of the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal.
By the method, the base station sends different downlink reference signals DLRS under different transmitting and receiving points TRP, and the spatial isolation of the terminal at any position relative to each distributed antenna in the logic cell can be accurately obtained, thereby providing a basis for spatial multiplexing.
Optionally, each of the TRPs comprises one or more distributed antennas.
When the distributed antennas are grouped based on the planning information and according to their positions, antennas grouped into the same group are considered to be the same TRP, and each distributed antenna may also be considered to be one TRP.
Optionally, the method further includes reporting the measurement results of different DLRSs according to the terminal to perform spatial isolation determination.
Optionally, the method further comprises: and determining that users capable of performing space division scheduling exist according to the space isolation, and sending respective downlink service data at respective attribution TRP of the space division scheduling users.
The method preferentially ensures the first-dimension users scheduled according to the conventional scheduling logic, and other space division users matched and scheduled on the basis improve the overall throughput of the cell.
Optionally, determining that there is a user capable of performing space division scheduling includes:
determining the attribution TRP of the first dimension user as TRP _ L0;
judging whether the downlink spatial separation degree of the TRP of the first dimension user and the TRP of other TRPs exists more than the spatial separation threshold SDMthreshold；
And the other TRPs can be sorted according to the isolation sizes to improve the efficiency of space division scheduling.
If not, space division scheduling cannot be carried out, and only a first-dimension user can be scheduled on TRP _ L0;
if the TRP exists, the TRP meeting the space isolation degree is sorted from large to small in isolation degree and is marked as TRP _ L1.
Optionally, when service scheduling is performed in users with TRP _ Li as a home TRP, the number of users scheduled on TRP _ Li is not limited, where the resource locations of the users scheduled on all TRP _ Li are completely or partially the same as the resource locations of the first dimension users.
Alternatively, if the isolation of the user to be scheduled from any TRP of the scheduled user is greater than SDMthresholdThen the user may be scheduled; otherwise, the user cannot be scheduled.
Optionally, the method further comprises:
determination of average isolation between TRPs
Figure GDA0001907880950000031
Determining the ratio of the traffic under TRP to the total cell traffici；
Determining a power adjustment amount of the transmission power of the TRP as follows:
Figure GDA0001907880950000032
wherein ratiojFor removing TRPiAnd the total traffic under other TRPs accounts for the proportion of the total traffic of the cell.
Alternatively, TRPiThe adjusted power is:
Figure GDA0001907880950000041
wherein the powermaxIs the maximum transmission power of TRPminIs the minimum transmit power of the TRP.
The embodiment of the application provides a spatial multiplexing device, which comprises:
a memory for storing program instructions;
a processor for calling the program instructions stored in the memory and executing according to the obtained program:
sending different downlink measurement signals DLRS under different transmitting and receiving points TRP, wherein the different DLRSs occupy different time frequency resources;
and determining the downlink spatial separation degree of the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal.
Optionally, each of the TRPs comprises one or more distributed antennas.
Optionally, the spatial isolation is determined according to the report of the measurement results of the terminal on different DLRSs.
Optionally, determining that there is a user capable of performing space division scheduling according to the spatial isolation, and sending respective downlink service data at respective attribution TRP of the space division scheduling user;
optionally, determining that there is a user capable of performing space division scheduling includes:
determining the attribution TRP of the first dimension user as TRP _ L0;
judging whether the downlink spatial separation degree of the TRP of the first dimension user and the TRP of other TRPs exists more than the spatial separation threshold SDMthreshold；
If not, space division scheduling cannot be carried out, and only a first-dimension user can be scheduled on TRP _ L0;
if the TRP exists, the TRP meeting the space isolation degree is sorted from large to small in isolation degree and is marked as TRP _ L1.
Optionally, when service scheduling is performed in users with TRP _ Li as a home TRP, the number of users scheduled on TRP _ Li is not limited, where the resource locations of the users scheduled on all TRP _ Li are completely or partially the same as the resource locations of the first dimension users.
Alternatively, if the isolation of the user to be scheduled from any TRP of the scheduled user is greater than SDMthresholdThen the user may be scheduled; otherwise, the user cannot be scheduled.
Optionally, the method further comprises:
determination of average isolation between TRPs
Figure GDA0001907880950000051
Determining the ratio of the traffic under TRP to the total cell traffici；
Determining a power adjustment amount of the transmission power of the TRP as follows:
Figure GDA0001907880950000052
wherein ratiojFor removing TRPiAnd the total traffic under other TRPs accounts for the proportion of the total traffic of the cell.
Alternatively, TRPiThe adjusted power is:
Figure GDA0001907880950000053
wherein the powermaxIs the maximum transmission power of TRPminIs the minimum transmit power of the TRP.
The embodiment of the application provides a spatial multiplexing device, and the device comprises:
a transmission unit: the device comprises a receiving point TRP, a transmitting point TRP and a receiving point TRP, wherein the receiving point TRP is used for receiving a downlink measurement signal DLRS, and the receiving point TRP is used for receiving the downlink measurement signal DLRS;
a determination unit: and the method is used for determining the downlink spatial separation degree between the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal.
Another embodiment of the present invention provides a computer storage medium having stored thereon computer-executable instructions for causing a computer to perform any one of the methods described above.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a space division multiplexing method provided in an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a transmission relationship between a TRP and a DLRS according to an embodiment of the present application;
fig. 3 is a schematic diagram of RSRP of each DLRS reported by User Equipment (UE) according to an embodiment of the present application;
fig. 4 is a schematic diagram illustrating isolation of a UE from TRPs according to an embodiment of the present disclosure;
FIG. 5 is a graph showing the average isolation between TRPs provided in example III of the present application;
fig. 6 is a schematic diagram illustrating a ratio of TRP lower traffic to total cell traffic according to a third embodiment of the present application;
fig. 7 is a schematic flowchart of a spatial multiplexing apparatus according to an embodiment of the present application;
fig. 8 is a schematic diagram of a computing device according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a spatial multiplexing method and a spatial multiplexing device, which are used for performing space division scheduling and controlling the transmitting power of each transmitting and receiving point by improving the accuracy of downlink spatial isolation.
In the distributed antenna wireless system, due to the fact that the antennas are distributed dispersedly and spatial isolation exists, spatial multiplexing of wireless signals can be considered, and the same time-frequency resource is multiplexed to perform multi-stream transmission in parallel, so that cell throughput and cell spectrum efficiency are improved. However, the base station side needs to know the spatial isolation explicitly before there is a basis for space division multiplexing, otherwise, mutual interference may be caused between multiple streams. According to the space multiplexing method provided by the embodiment of the application, different downlink measurement signals DLRS are sent at different transmitting and receiving points TRP, wherein the different DLRSs occupy different time frequency resources; and determining the downlink spatial separation degree of the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal.
The spatial multiplexing method provided by the embodiment of the application can accurately obtain the spatial isolation of the terminal at any position relative to each distributed antenna in the logic cell, and the spatial isolation is used as a basis for space division scheduling to adjust the power of each distributed antenna during parallel multi-stream transmission, so that the mutual interference is reduced, and the efficiency of space division multi-stream parallel transmission is improved.
The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable systems may be global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) systems, Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G systems, and 5G New media (NR) systems. These various systems include terminal devices and network devices.
The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones) and computers having mobile terminal devices, for example, portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN). For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.
The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to interconvert received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may also be an evolved network device (eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station in a 5G network architecture (next generation system), and may also be a home evolved node B (HeNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like, which are not limited in the embodiments of the present application.
Sending different downlink measurement signals DLRS under different TRPs, wherein the different downlink measurement signals occupy different time-frequency resources; and informing the terminal of the resource positions of all downlink measurement signals, configuring the terminal to measure the received signal power of all downlink measurement signals, and periodically reporting the received signal power of all downlink measurement signals, wherein the period is configurable. In order to ensure that the DLRS does not affect the service channel, the resources occupied by the DLRS are not reused for transmitting service data.
Based on accurate measurement of the terminal on the downlink signal, spatial multiplexing is performed, and the cell spectrum efficiency is improved. Various embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the display sequence of the embodiment of the present application only represents the sequence of the embodiment, and does not represent the merits of the technical solutions provided by the embodiments.
The flow of a spatial multiplexing method provided in the embodiment of the present application is shown in fig. 1.
S101, sending different downlink measurement signals DLRS under different transmitting and receiving points TRP, wherein the different DLRSs occupy different time frequency resources;
s102, determining the downlink spatial separation degree between the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal.
The spatial multiplexing method provided by the embodiment of the application realizes that the base station can send different downlink reference signals DLRS under different transmitting and receiving points TRP, and can accurately obtain the spatial isolation of the terminal at any position relative to each distributed antenna in the logic cell, thereby providing a basis for spatial multiplexing.
Optionally, each of the TRPs comprises one or more distributed antennas.
When the distributed antennas are grouped based on the planning information and according to their positions, antennas grouped into the same group are considered to be the same TRP, and each distributed antenna may also be considered to be one TRP.
Optionally, the method further includes reporting the measurement results of different DLRSs according to the terminal to perform spatial isolation determination.
Optionally, the method further comprises: and determining that users capable of performing space division scheduling exist according to the space isolation, and sending respective downlink service data at respective attribution TRP of the space division scheduling users.
The method preferentially ensures the first-dimension users scheduled according to the conventional scheduling logic, and other space division users matched and scheduled on the basis improve the overall throughput of the cell.
Several specific examples are given below.
The first embodiment is a downlink isolation measurement scheme:
firstly, different TRPs transmit different DLRSs, and the transmission relationship between the TRPs and the DLRSs is shown in figure 2;
step two, all terminals perform channel estimation on all DLRSs and measure the total power of useful receiving signals;
and step three, reporting the respective measured values by all the terminals periodically, wherein the period is configurable, and referring to fig. 3.
The base station respectively calculates the attributive TRP of each terminal and the downlink space separation degree of other TRPs according to the measurement report of each terminal, and records the downlink space separation degree
Figure GDA0001907880950000091
Is composed of
Figure GDA0001907880950000092
The spatial separation degree of the downlink from other TRPs is
Figure GDA0001907880950000093
UEx e ∈ { all UEs within a cell }.
The downlink space isolation is a measure of the interference degree of non-home TRP to the traffic of a user individual under the home TRP relative to each TRP, the smaller the interference of a certain TRP to a certain user is, namely the greater the isolation is,
Figure GDA0001907880950000101
the larger. UE faciesThe isolation of each TRP is shown in figure 4. Wherein, the home TRP of the user UEx is defined as
Figure GDA0001907880950000102
The corresponding TRP or TRP with a segregation of 0.
The above embodiment measures reporting cycle update, the base station also performs calculation according to the cycle update, the cycle size is configurable, the unit is a time slot, the maximum cycle supported by 5G is 320 time slots, and 160 milliseconds is for 30KHz Subcarrier Spacing (SCS). And judging the isolation by using the latest reported measurement information during space division scheduling so as to track the influence of the change of the terminal position on the isolation.
Embodiment two, downlink space division transmission scheme:
generally speaking, a scheduling algorithm considers cell throughput, user fairness, service priority, service time delay, service quality and other factors, the first-dimension user scheduled according to conventional scheduling logic is preferentially ensured, the space division cell matched with scheduling is determined on the basis, and the overall cell throughput is improved.
The following steps are proposed for scheduling the traffic channel of the base station in the embodiment of the present application:
step one, carrying out service channel scheduling of a first-dimension user according to a non-space division conventional scheduling logic, and determining a first-layer scheduling user and corresponding resource allocation;
step two, performing the following steps on all the users in the first dimension in a traversing manner:
1. determining a first dimension user attribution TRP, and recording as TRP _ L0;
2. judging whether the downlink space isolation degree of the TRPX and the TRP to which the first dimension user belongs is larger than the space division threshold SDM or not in other TRPsthresholdThe other TRPs are sorted according to the magnitude of isolation, if the other TRPs do not exist, space division scheduling cannot be performed, and only a first-dimension user can be scheduled on TRP _ L0; if the TRP exists, sorting the TRP meeting the space isolation degree from large to small according to the isolation degree, and marking as TRP _ L1, … … and TRP _ Lx;
3. TRP _ Lx is sequentially traversed for TRP _ L1, … … arranged by the magnitude of the isolation.
And performing traffic scheduling in the user with TRP _ Li as the home TRP. The number of users scheduled on the TRP _ Li is not limited, but the resource positions and the total amount of the users scheduled on all the TRP _ Li are completely the same as or only part of the resource positions of the first-dimension users;
judging the isolation between the user to be scheduled and all TRPs of the scheduled user by taking TRP _ Li as the home TRP, wherein the isolation between the user to be scheduled and any TRP of the scheduled user is greater than that of the SDMthresholdThen the user may be scheduled, otherwise the user may not be scheduled. That is, the isolation between any space division scheduling user and any non-attributive TRP with space division scheduling needs to be larger than SDMthresholdThe conditions of (1).
And step three, downlink service data transmission is carried out on each scheduled user at the home TRP, and the non-home TRP does not transmit the service data of the corresponding user.
Wherein, SDMthresholdThe specific value is configurable; SDMthresholdWhen the configuration is extremely large, all users cannot meet the space division condition, namely, the space division function is closed. The number of streams per dimension user is not greater than the user capability and the number of SU-MIMO supported streams for the TRP antenna.
Embodiment three, power control scheme:
the downlink spatial isolation described in the above embodiments is defined from the perspective of each user with respect to each TRP, and its magnitude is a variable quantity related to the user position. The present embodiment considers power control by periodically adjusting the transmission power of each TRP according to the statistical information of a large number of users.
To provide a basis for power control, the following definition of average isolation between TRPs is added. TRPaRelative TRPbAverage degree of isolation of
Figure GDA0001907880950000111
Is defined as TRPaMeasuring reported TRP for all users belonging to TRPa、TRPbMean value of the degrees of separation between. TRPaRelative TRPbHas an average degree of isolation ofA large number of users and the isolation statistics under their distribution.
Just TRPaRelative TRPbFor the average degree of isolation of (1), if
Figure GDA0001907880950000112
TRPaRelative TRPbIs less than the space division threshold, the TRP can be reducedbPower; if it is
Figure GDA0001907880950000113
TRPaRelative TRPbThe average isolation degree of the TRP is larger than the space division threshold, the TRP can be improvedbAnd (4) power.
Considering the difference of user quantity and traffic under different TRPs, the multi-TRP carries out power control according to the following method:
step one, in a certain statistical period, the home subscriber statistical measurement of each TRP is reported, and the average isolation between the TRPs is shown in fig. 5, where the unit of the statistical period is second and the size is configurable.
Step two, counting the service throughput under each TRP in the same counting period to obtain the ratio of the service under the TRP to the total cell serviceiSee fig. 6.
Step three, calculating power adjustment quantity for all TRPs according to the following formula:
Figure GDA0001907880950000121
wherein, ratiojFor removing TRPiAnd the total traffic under other TRPs accounts for the proportion of the total traffic of the cell.
Powerctrleffset calculated based on previous cycle for each cycleTRPiIn TRPiCurrent power ofTRPiBased on powerctrleffsetTRPiThe power is adjusted.
Step four, TRPiThe adjusted power is:
Figure GDA0001907880950000122
wherein the maximum transmission power of the TRP is set to powermaxMinimum transmit power is set to powerminAnd the specific value can be configured.
The traffic volume determines the influence of each TRP in power adjustment, the larger the traffic volume is, the smaller the power adjustment of the TRP per se is, and the smaller the traffic volume is, the more the power of the TRP is controlled by the TRP with large traffic volume.
On the network side, an embodiment of the present application provides a spatial multiplexing apparatus, see fig. 7, including:
the sending unit 11 sends different downlink measurement signals DLRS at different sending and receiving points TRP, where the different DLRS occupy different time-frequency resources;
the determining unit 12 determines the downlink spatial separation between the terminal and the TRP according to the received signal power measurement result reported by the receiving terminal and directed to the DLRS.
It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Embodiments of the present application provide a computing device, which may specifically be a desktop computer, a portable computer, a smart phone, a tablet computer, a Personal Digital Assistant (PDA), and the like. The computing device may include a Central Processing Unit (CPU), memory, input/output devices, etc., the input devices may include a keyboard, mouse, touch screen, etc., and the output devices may include a Display device, such as a Liquid Crystal Display (LCD), a Cathode Ray Tube (CRT), etc.
The memory may include Read Only Memory (ROM) and Random Access Memory (RAM), and provides the processor with program instructions and data stored in the memory. In the embodiments of the present application, the memory may be used for storing a program of any one of the methods provided by the embodiments of the present application.
The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained program instructions by calling the program instructions stored in the memory.
On the network side, referring to fig. 8, an embodiment of the present application provides a computing device, including:
a memory 520 for storing program instructions;
a processor 500 for calling the program instructions stored in the memory, and executing, according to the obtained program:
under different transmitting and receiving points TRP, the processor 500 transmits different downlink measurement signals DLRS, wherein the different DLRSs occupy different time-frequency resources;
the transceiver 510 determines the downlink spatial separation between the terminal and the TRP by receiving the measurement result of the received signal power of the DLRS reported by the terminal.
Optionally, each of the TRPs comprises one or more distributed antennas.
Optionally, the spatial multiplexing method reports the measurement results of different DLRSs according to a terminal to perform spatial isolation determination.
Optionally, it is determined that there is a user capable of performing space division scheduling according to the spatial isolation, and respective downlink service data is sent at a respective home TRP of the space division scheduling user.
Optionally, determining that there is a user capable of performing space division scheduling includes:
determining the attribution TRP of the first dimension user as TRP _ L0;
judging whether the downlink spatial separation degree of the TRP of the first dimension user and the TRP of other TRPs exists more than the spatial separation threshold SDMthreshold；
If not, space division scheduling cannot be carried out, and only a first-dimension user can be scheduled on TRP _ L0;
if the TRP exists, the TRP meeting the space isolation degree is sorted from large to small in isolation degree and is marked as TRP _ L1.
Optionally, when service scheduling is performed in users with TRP _ Li as a home TRP, the number of users scheduled on TRP _ Li is not limited, where the resource locations of the users scheduled on all TRP _ Li are completely or partially the same as the resource locations of the first dimension users.
Alternatively, if the isolation of the user to be scheduled from any TRP of the scheduled user is greater than SDMthresholdThen the user may be scheduled;
otherwise, the user cannot be scheduled.
Optionally, the spatial multiplexing method further includes:
determination of average isolation between TRPs
Figure GDA0001907880950000141
Determining the ratio of the traffic under TRP to the total cell traffici；
Determining a power adjustment amount of the transmission power of the TRP as follows:
Figure GDA0001907880950000142
wherein ratiojFor removing TRPiAnd the total traffic under other TRPs accounts for the proportion of the total traffic of the cell.
Alternatively, TRPiThe adjusted power is:
Figure GDA0001907880950000151
wherein the powermaxIs the maximum transmission power of TRPminIs the minimum transmit power of the TRP.
A transceiver 510 for receiving and transmitting data under the control of the processor 600.
Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 510 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.
The processor 500 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD).
Embodiments of the present application provide a computer storage medium for storing computer program instructions for an apparatus provided in the embodiments of the present application, which includes a program for executing any one of the methods provided in the embodiments of the present application.
The computer storage media may be any available media or data storage device that can be accessed by a computer, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.
The method provided by the embodiment of the application can be applied to terminal equipment and also can be applied to network equipment.
The Terminal device may also be referred to as a User Equipment (User Equipment, abbreviated as "UE"), a Mobile Station (Mobile Station, abbreviated as "MS"), a Mobile Terminal (Mobile Terminal), or the like, and optionally, the Terminal may have a capability of communicating with one or more core networks through a Radio Access Network (RAN), for example, the Terminal may be a Mobile phone (or referred to as a "cellular" phone), a computer with Mobile property, or the like, and for example, the Terminal may also be a portable, pocket, hand-held, computer-built-in, or vehicle-mounted Mobile device.
A network device may be a base station (e.g., access point) that refers to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to interconvert received air frames and IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (NodeB or eNB or e-NodeB) in LTE, or a gNB in 5G system. The embodiments of the present application are not limited.
The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
In summary, when the downlink spatial multiplexing method of the present application is adopted, different downlink measurement signals DLRS are sent at different transmitting and receiving points TRP, where the different DLRS occupy different time-frequency resources; and determining the downlink spatial separation degree of the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal. The space division scheduling and the control of the transmitting power of each transmitting and receiving point can be performed by improving the accuracy of the downlink space isolation.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (7)

1. A method for spatial multiplexing, the method comprising:
sending different downlink measurement signals DLRS under different transmitting and receiving points TRP, wherein the different DLRSs occupy different time frequency resources;
determining the downlink spatial separation degree of the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal; each of the TRPs comprises one or more distributed antennas; reporting measurement results of different DLRSs according to a terminal to judge the spatial isolation;
determining users capable of performing space division scheduling according to the space isolation, and sending respective downlink service data at respective attributive TRP of the space division scheduling users;
wherein the determining that there is a user capable of performing space division scheduling includes:
determining the attribution TRP of the first dimension user as TRP _ L0;
judging whether the downlink spatial separation degree of the TRP of the first dimension user and the TRP of other TRPs exists more than the spatial separation threshold SDMthresholdWherein the TRPX is used for representing that the downlink spatial separation degree of TRPs belonging to the first dimension user in the other TRPs is larger than a spatial separation threshold SDMthresholdThe TRP of (1);
if not, space division scheduling cannot be carried out, and only a first-dimension user can be scheduled on TRP _ L0;
if the TRP exists, sorting the TRP meeting the space isolation degree from large to small according to the isolation degree, and recording the TRP _ L1.
Determining an average isolation between TRPs;
determining the proportion of the traffic under TRP to the total cell traffic;
determining a power adjustment amount of the transmission power of the TRP as follows:
Figure FDA0002975987860000011
wherein ratiojIs TRPjThe proportion of the total traffic volume to the total cell traffic volume, TRPjAnd TRPiIs a different TRP, said
Figure FDA0002975987860000012
For characterizing TRPjRelative TRPiN is used to characterize the amount of TRP minus one.
2. The method of claim 1, wherein when traffic scheduling is performed among users with TRP _ Li as home TRP, the number of users scheduled on TRP _ Li is not limited, wherein the resource locations of the users scheduled on all TRP _ Li are completely or partially the same as the resource locations of the users in the first dimension, and wherein the TRP _ Li is used for characterizing the home TRP of the users.
3. The method of claim 1, wherein if the isolation of the user to be scheduled from any TRP of the scheduled user is greater than SDMthresholdThen the user may be scheduled;
otherwise, the user cannot be scheduled.
4. The method of claim 1, wherein the TRPi adjusted power is:
Figure FDA0002975987860000021
wherein the powermaxIs the maximum transmission power of TRPminIs the minimum transmit power of TRPTRPiIs the current power of the TRPi.
5. An apparatus for spatial multiplexing, the apparatus comprising:
a memory for storing program instructions;
a processor for calling program instructions stored in said memory to execute the method of any one of claims 1 to 4 in accordance with the obtained program.
6. An apparatus for spatial multiplexing, the apparatus comprising:
a transmission unit: the device comprises a receiving point TRP, a transmitting point TRP and a receiving point TRP, wherein the receiving point TRP is used for receiving a downlink measurement signal DLRS, and the receiving point TRP is used for receiving the downlink measurement signal DLRS;
a determination unit: the terminal is used for determining the downlink spatial separation degree of the terminal and the TRP according to the received signal power measurement result aiming at the DLRS reported by the receiving terminal; determining users capable of performing space division scheduling according to the space isolation, and sending respective downlink service data at respective attributive TRP of the space division scheduling users;
wherein the determination unit is configured to:
determining the attribution TRP of the first dimension user as TRP _ L0;
judging whether the downlink spatial separation degree of the TRP of the first dimension user and the TRP of other TRPs exists more than the spatial separation threshold SDMthresholdWherein the TRPX is used for representing that the downlink spatial separation degree of TRPs belonging to the first dimension user in the other TRPs is larger than a spatial separation threshold SDMthresholdThe TRP of (1);
if not, space division scheduling cannot be carried out, and only a first-dimension user can be scheduled on TRP _ L0;
if the TRP exists, sorting the TRP meeting the space isolation degree from large to small according to the isolation degree, and recording the TRP _ L1.
Determining an average isolation between TRPs;
determining the proportion of the traffic under TRP to the total cell traffic;
determining a power adjustment amount of the transmission power of the TRP as follows:
Figure FDA0002975987860000031
wherein ratiojIs TRPjThe proportion of the total traffic volume of the cell to the total traffic volume of the cell, the
Figure FDA0002975987860000032
For characterizing TRPjRelative TRPiI and j are used to characterize different TRP numbers and n is used to characterize the number of TRPs minus one.
7. A computer storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 1 to 4.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101764632A (en) * 2008-12-23 2010-06-30 中兴通讯股份有限公司 Mapping method and device of ports and antennae in long term evolution-time division duplex (LTE-TDD) indoor distribution system
CN101771448A (en) * 2008-12-31 2010-07-07 大唐移动通信设备有限公司 Space division multiplexing and MIMO combining method and base station
CN101800584A (en) * 2009-02-11 2010-08-11 大唐移动通信设备有限公司 Space division multiple access method and device for indoor distributed system
CN101873703A (en) * 2009-04-27 2010-10-27 大唐移动通信设备有限公司 Dispatching method and communication equipment of space division multiple access resources
CN102098794A (en) * 2011-01-30 2011-06-15 大唐移动通信设备有限公司 Method and apparatus for processing random access collision
CN102104945A (en) * 2009-12-21 2011-06-22 大唐移动通信设备有限公司 Space division determination method and equipment
CN102457952A (en) * 2010-11-02 2012-05-16 中兴通讯股份有限公司 Method and system for performing physical uplink channel power authorization on space division multiplexing user
CN102724682A (en) * 2012-05-25 2012-10-10 中兴通讯股份有限公司 Networking method and device of communication system based on active antenna
CN101267235B (en) * 2007-03-16 2013-01-09 电信科学技术研究院 A method and device for realizing space division multiplexing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007033676A1 (en) * 2005-09-26 2007-03-29 Aalborg Universitet A method of non-orthogonal spatial multiplexing in a mlmo communication system
CN101820646A (en) * 2009-02-27 2010-09-01 中兴通讯股份有限公司 Method and device for improving high-speed downlink packet access service throughput
CN102387593B (en) * 2010-09-06 2014-05-07 电信科学技术研究院 Communication method adopting space-division multiple access (SDMA) and base station

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101267235B (en) * 2007-03-16 2013-01-09 电信科学技术研究院 A method and device for realizing space division multiplexing
CN101764632A (en) * 2008-12-23 2010-06-30 中兴通讯股份有限公司 Mapping method and device of ports and antennae in long term evolution-time division duplex (LTE-TDD) indoor distribution system
CN101771448A (en) * 2008-12-31 2010-07-07 大唐移动通信设备有限公司 Space division multiplexing and MIMO combining method and base station
CN101800584A (en) * 2009-02-11 2010-08-11 大唐移动通信设备有限公司 Space division multiple access method and device for indoor distributed system
CN101873703A (en) * 2009-04-27 2010-10-27 大唐移动通信设备有限公司 Dispatching method and communication equipment of space division multiple access resources
CN102104945A (en) * 2009-12-21 2011-06-22 大唐移动通信设备有限公司 Space division determination method and equipment
CN102457952A (en) * 2010-11-02 2012-05-16 中兴通讯股份有限公司 Method and system for performing physical uplink channel power authorization on space division multiplexing user
CN102098794A (en) * 2011-01-30 2011-06-15 大唐移动通信设备有限公司 Method and apparatus for processing random access collision
CN102724682A (en) * 2012-05-25 2012-10-10 中兴通讯股份有限公司 Networking method and device of communication system based on active antenna

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