WO2017071587A1 - 通信方法和装置 - Google Patents
通信方法和装置 Download PDFInfo
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- WO2017071587A1 WO2017071587A1 PCT/CN2016/103406 CN2016103406W WO2017071587A1 WO 2017071587 A1 WO2017071587 A1 WO 2017071587A1 CN 2016103406 W CN2016103406 W CN 2016103406W WO 2017071587 A1 WO2017071587 A1 WO 2017071587A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
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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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
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- 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
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a communication method and apparatus.
- the cellular communication network is the main networking mode of the mobile communication system.
- the communication network capacity needs to be greatly increased to meet the needs of users.
- a multi-sector networking mode can be adopted for networking.
- each base station is equipped with a plurality of directional antennas, and the orientations of the plurality of directional antennas are different, and the coverage area of one base station is divided into multiple physical sectors, and each physical sector has its own And transmitting and receiving antennas, the base station is configured with one cell for each physical sector, and each cell is configured with radio resources, and the base station allocates radio resources of each cell to the user equipment residing in the cell, and then forms a beam shape.
- the method uses the directional antenna corresponding to the cell to align the beam with the user equipment, so that the data carried on the radio resource allocated to the user equipment is sent to the corresponding user equipment by using the beam. Since the orientation of the directional antennas corresponding to each cell is different, that is, the directions of the radiated beams are different, these cells can adopt the same or similar frequency bands without interfering with each other, so that the spectrum resources can be reused, and the network capacity is improved.
- the embodiment of the invention provides a communication method and device, and the technical solution is as follows:
- an embodiment of the present invention provides a communication method, where the method includes:
- the base station divides the coverage area of the first antenna into at least two cells, and the base station performs weighting processing on data carried on the time-frequency resources of the at least two cells, and the base station performs the weighted processing on the at least two
- the data carried on the time-frequency resource of the cell is combined to obtain the combined data;
- the base station transmits at least two directional beams through the first antenna, and the at least two directional beams are used to send the combined data,
- the orientations of the at least two directional beams are different, the at least two directional beams are in one-to-one correspondence with the at least two directional beams, and the beam direction of the at least two directional beams is determined by the base station according to the directional beam Orienting the location distribution of all the terminals in the corresponding cell; or, the base station transmits a directional beam by using the first antenna, where the one directional beam is used to send the combined data, where the directional beam
- the beam direction is directed by the base station according to the location
- the base station transmits data of at least two cells by using at least two beams that are transmitted by the first antenna, and at least two beams that are transmitted by the first antenna are separated from at least two of the first antenna coverage areas.
- the cells are configured one by one, and each of the cells is configured with its own transmission bandwidth. For a coverage area of an antenna, the total transmission bandwidth that can be used is significantly increased, thereby achieving an increase in network capacity.
- the base station performs weighting processing on data carried on time-frequency resources of the at least two cells, including:
- the base station multiplies the data carried on the time-frequency resource of each cell by the directional beam weight vector of the local cell, and obtains the data that the time-frequency resource maps to each channel of the first antenna.
- the base station multiplies the data carried on the time-frequency resource of each cell by the directional beam weight vector of the local cell, to obtain the time-frequency resource mapping to the Data on each channel of an antenna, including:
- the base station multiplies the data carried on the time-frequency resource of each cell by the cell beam weight vector of the local cell, and the cell beam weight vector is used to form a coverage corresponding to the corresponding cell or cover the corresponding corresponding cell.
- the base station multiplies the data carried on the time-frequency resource block of each cell by the service beam weight vector of the local cell, and the service beam weight vector is used to form a directional beam that is aligned with the terminal in the local cell.
- the base station multiplies the data carried on the time-frequency resources of each cell by different directional beam weight vectors, and finally forms a directional beam of the coverage cell or a directional beam of the aligned terminal according to actual needs.
- the directional beam weight vector is further used to control the transmit power of the directional beam, and the transmit power is determined according to a network key performance indicator KPI.
- the key performance indicators include terminal distribution, service type, and traffic load in the cell.
- the performing, by the base station, the data carried on the time-frequency resources of the at least two cells including:
- the data of the same frequency point is processed according to the following formula: (s1+s2+...+Sn)*e jw0t , where n represents a cell covered by the first antenna Number, n ⁇ 2, S1 ⁇ Sn represent signals from each cell, w0 is frequency information of S1 ⁇ Sn, and e jw0t means modulation of signal to carrier of frequency w0;
- At least two cells covered by the same antenna may use the same frequency band or non-overlapping frequency bands.
- an embodiment of the present invention provides a communication method, where the method includes:
- the base station divides a coverage area of the second antenna into at least two cells, the base station has at least one antenna, and the second antenna is any one of the at least one antenna;
- the base station processes signals received by all channels of the second antenna to obtain received data of the at least two cells.
- the base station receives signals of at least two cells by using the second antenna, and the cells are all configured with their own transmission bandwidth, and the total transmission bandwidth that can be used is significantly increased for the coverage area of one antenna, thereby Achieved an increase in network capacity.
- the receiving, by the base station, the signals received by the all the channels of the second antenna, and obtaining the received data of the at least two cells including:
- the base station performs signals on all channels of the second antenna in units of cells. Single cell processing; or,
- the base station simultaneously performs joint detection processing on signals received by all channels of the second antenna.
- the base station can process the signals received by the second antenna in an inaccessible manner to obtain received data of at least two cells.
- an embodiment of the present invention provides a communication apparatus, where the apparatus includes: a module for performing the method of the first aspect.
- an embodiment of the present invention provides a communication apparatus, where the apparatus includes: a module for performing the method of the second aspect.
- an embodiment of the present invention provides a communication device, where the device includes: a memory, a communication interface, and a processor connected to a memory and a communication interface, where the memory is used to store an instruction, and the processor is configured to execute the An instruction to communicate under control of the processor.
- the method of the first aspect may be performed when the processor executes the instructions.
- an embodiment of the present invention provides a communication device, where the device includes: a memory, a communication interface, and a processor connected to the memory and the communication interface, where the memory is used to store an instruction, and the processor is configured to execute the An instruction to communicate under control of the processor.
- the method of the second aspect can be performed when the processor executes the instructions.
- an embodiment of the present invention provides a computer readable medium for storing program code for execution by a communication device, the program code comprising instructions for performing the method of the first aspect.
- an embodiment of the present invention provides a computer readable medium for storing program code for storing program code for execution by a communication device, the program code comprising instructions for performing the method of the second aspect.
- the base station transmits data of at least two cells by using the first antenna to transmit different at least two beams, and the at least two beams transmitted by the first antenna are in one-to-one correspondence with at least two cells divided by the first antenna coverage area, and the cells Both are equipped with their own transmission bandwidth.
- the total transmission bandwidth that can be used is significantly increased, thereby achieving an increase in network capacity.
- the embodiment of the present invention implements the orientation of the beam covering the cell by processing the baseband signal, and thus can be implemented based on the existing base station antenna structure without increasing the hardware cost of the antenna system.
- 1a is a schematic diagram of a networking structure provided by the prior art
- FIG. 1b is a schematic structural diagram of a networking provided by an embodiment of the present invention.
- FIG. 2 is a flowchart of a communication method according to an embodiment of the present invention.
- FIG. 3 is a flowchart of another communication method according to an embodiment of the present invention.
- 4a is a schematic diagram of beams of two cells according to an embodiment of the present invention.
- 4b is a schematic diagram of frequency configuration of two cells according to an embodiment of the present invention.
- FIG. 5 is a flowchart of still another communication method according to an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of another communication apparatus according to an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present invention.
- the cellular communication system of the embodiment of the present invention includes but is not limited to: Global System of Mobile communication (“GSM”) system, Code Division Multiple Access (“CDMA”). System, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) ”) System, LTE Frequency Division Duplex (“FDD”) system, LTE Time Division Duplex (“TDD”), Universal Mobile Telecommunication System (Universal Mobile Telecommunication System, referred to as "UMTS”), Worldwide Interoperability for Microwave Access (“WiMAX”) communication system, and the like.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- a base station may implement an omnidirectional antenna to implement cell coverage, or a plurality of directional antennas may be used to implement cell coverage.
- the embodiment of the present invention will be described in detail with a base station that implements cell coverage by using a 120-degree directional antenna. That is, one base station is configured with three directional antennas, and the three directional antennas have different directions, and each antenna covers a range of 120°.
- the directional antenna in the embodiment of the present invention may be a single antenna, or may be a smart antenna composed of multiple antenna units.
- FIG. 1a shows an existing three-sector cellular networking mode.
- a triangle represents a base station.
- the coverage of the base station is divided according to a hexagon, and each hexagon corresponds to one cell.
- the base stations are arranged at three common intersections of hexagons, one directional antenna corresponds to one cell (ie one hexagon), and one base station can cover three cells. Assume that the transmission bandwidth of these three cells is configured as a megabyte.
- Fig. 1b shows the cellular network structure of the present invention.
- a triangle is also used to represent the base station, and a thick black line extending from a triangle in Fig. 1b indicates the antenna.
- the base station 4 has three directional antennas 1a, 1b and 1c, and the base station 4 is arranged in the middle area of the hexagon 10, and the coverage area of each directional antenna is divided into two.
- the cell for example, the coverage area of the directional antenna 1a is divided into cells 11a, 11b, so that the base station 1 can cover 6 cells (corresponding to 7 hexagons).
- the cells 11a, 11b are not regular hexagons, but when a plurality of cells are formed together, they can be quantized into hexagons to form a plurality of standard cell sets.
- one directional antenna can generate beams in two directions, and one direction of the beam covers one cell, so that one directional antenna can cover Two cells.
- the coverage area of one antenna can cover two cells, wherein the transmission bandwidth of each cell can be separately configured (for example, configured as a megabit), and the transmission bandwidth of the coverage area of the directional antenna is 2a megabytes, which is twice the transmission bandwidth (a megabit) of the coverage area of one antenna shown in Fig. 1a, that is, the transmission bandwidth is doubled in the coverage area of one antenna, and it is easy to know that the transmission bandwidth is larger.
- the networking mode shown in Figure 1b significantly increases the system capacity of the communication system.
- one directional antenna in the cellular networking mode shown in FIG. 1b, one directional antenna generates beams in two directions, and in other cellular networking modes, one directional antenna can generate beams in more than two directions, for example, three.
- the beam in four directions is not limited by the present invention; at this time, a directional antenna It can cover 3 cells, 4 cells or more.
- the transmission bandwidth in the coverage area of one directional antenna is 3a megabytes and 4a megabytes, which is the transmission of the coverage area of one antenna shown in FIG. 1a.
- the bandwidth (a megabyte) is 3 times, 4 times or more, that is, the system capacity of the communication system is greatly improved compared with the networking mode shown in FIG. 1b.
- the coverage area of one antenna is divided into multiple cells, and each cell is configured with its own transmission bandwidth, so that the total transmission bandwidth that can be used for the coverage area of the same antenna is significantly increased.
- the system capacity of the communication system can be significantly improved, and the embodiment of the present invention implements the orientation of the beam covering the cell by processing the baseband signal, and thus can be implemented based on the existing base station antenna structure without increasing the hardware cost of the antenna system.
- FIG. 2 shows a communication method of an embodiment of the present invention, which may be performed by any suitable means, such as by a base station, but the invention is not limited thereto.
- This method can be applied to a cellular communication system. Referring to Figure 2, the method includes:
- Step S101 The base station divides the coverage area of the first antenna into at least two cells.
- each cell is configured with its own cell identifier (such as a physical cell identifier ("PCI”) and a frequency domain resource (ie, a transmission bandwidth).
- PCI physical cell identifier
- frequency domain resource ie, a transmission bandwidth
- the base station has at least one antenna, and the antenna may be a directional antenna or an omnidirectional antenna.
- the antenna is an omnidirectional antenna, the base station has one antenna; when the antenna is a directional antenna, the base station has at least two antennas, for example, three directional antennas may be provided.
- the first antenna is any one of the at least one antennas for transmitting data carried on a time-frequency resource of a cell in its coverage area.
- the bandwidth is a frequency domain resource and the time is a time domain resource.
- the time-frequency resource in the embodiment of the present invention is from the time domain and the frequency domain. Define the radio resources that the cell uses to transmit data.
- the frequency domain resources may be described by channel resources, and are generally classified into traffic channel resources and control channel resources.
- Step S102 The base station performs weighting processing on the data carried on the time-frequency resources of the at least two cells, so as to map the data carried on the time-frequency resources of the at least two cells to the channel of the first antenna.
- step S102 beamforming of a beam of data carried on a time-frequency resource transmitting two cells can be performed.
- Step S103 The base station combines the data carried on the time-frequency resources of the at least two cells after the weighting process to obtain the combined data.
- Step S104 The base station transmits at least two directional beams by using the first antenna, where the at least two directional beams are used for transmitting the combined data, the directions of the at least two directional beams are different, and at least two directional beams and at least two cells are used.
- the direction of the at least two directional beams is pointed by the base station according to the location distribution of all terminals in the cell corresponding to the directional beam; or the base station transmits a directional beam through the first antenna, and the one directional beam is used for transmitting and combining
- the data, the beam direction of the one directional beam is directed by the base station according to the location of a single terminal in at least two cells.
- the first antenna transmits two directional beams, and one directional beam points to the left of one cell. On the side, the other directional beam points to the right side of the other cell; if the terminal is located in the overlapping area of two adjacent cells, the first antenna transmits a directional beam that is aligned with the overlapping area of the two adjacent cells.
- step S104 may further include:
- the base station transmits at least two directional beams through the first antenna, the at least two directional beams are used to transmit the combined data, the directions of the at least two directional beams are different, and the at least two directional beams correspond to the at least two cells one by one. At least two directional beams are aligned with one terminal in each corresponding cell. For example, taking two beams corresponding to two cells as an example, one directional beam is aligned with terminal a in cell A, and the other directional beam is aligned with cell B. Terminal b in.
- the base station sends data of at least two cells by using at least two beams that are transmitted by the first antenna, and at least two beams that are transmitted by the first antenna and at least two cells that are divided by the first antenna coverage area.
- these cells are all configured with their own transmission bandwidth.
- the total transmission bandwidth that can be used is significantly increased, thereby achieving an increase in network capacity.
- the embodiment of the present invention implements the orientation of the beam covering the cell by processing the baseband signal, and thus can be implemented based on the existing base station antenna structure without increasing the hardware cost of the antenna system.
- the base station can determine whether the first antenna transmits one directional beam or multiple directional beams according to the actual location distribution of the terminal in the cell, which is flexible.
- FIG. 3 shows another communication method according to an embodiment of the present invention, and the communication method shown in FIG. 3 is further detailed description of the communication method shown in FIG. 2.
- the method in this embodiment may be implemented based on the networking structure shown in FIG. 1b.
- an antenna is used to cover two cells as an example for specific description.
- the two cells are the first cell and the second cell.
- the present invention is not limited thereto. Referring to Figure 3, the method includes:
- Step S201 The base station divides the coverage area of the first antenna into two cells.
- each cell is configured with its own cell identifier (such as a physical cell identifier ("PCI”) and a frequency domain resource (ie, a transmission bandwidth).
- PCI physical cell identifier
- frequency domain resource ie, a transmission bandwidth
- the base station has at least one antenna, and the antenna may be a directional antenna or an omnidirectional antenna.
- the antenna is an omnidirectional antenna, the base station has one antenna; when the antenna is a directional antenna, the base station has at least two antennas, for example, three directional antennas may be provided.
- the first antenna is any one of the at least one antennas for transmitting data carried on a time-frequency resource of a cell in its coverage area.
- the bandwidth is a frequency domain resource and the time is a time domain resource.
- the time-frequency resource in the embodiment of the present invention is from the time domain and the frequency domain. Define the radio resources that the cell uses to transmit data.
- the frequency domain resources may be described by channel resources, and are generally classified into traffic channel resources and control channel resources.
- control channel resources include common control channel resources and user class control channel resources.
- the public control channel resources mainly include a physical broadcast channel (PBCH), a primary synchronization channel, a secondary synchronization channel, and a physical downlink control channel (PDCCH).
- the class control resources mainly include a PDCCH and a Physical Hybrid ARQ Indicator Channel (PHICH).
- PBCH physical broadcast channel
- PHICH Physical Hybrid ARQ Indicator Channel
- the present invention is not limited thereto. In other communication systems, only control channel resources and user channel resources may be distinguished. Without further differentiation of control channel resources.
- Step S202 The base station performs weighting processing on the data carried on the time-frequency resources of the two cells to map the data carried on the time-frequency resources of the two cells to the channel of the first antenna.
- step S202 the beam of the data carried on the time-frequency resource transmitting the two cells can be beamformed.
- the step S202 may include:
- the base station multiplies the data carried on the time-frequency resources of each cell by the directional beam weight vector of the current cell, and obtains the data of the time-frequency resources mapped to the respective channels of the first antenna.
- the first antenna transmits data carried on time-frequency resources of each cell, beams with different directions are formed.
- the number of weights in the directional beam weight vector of each cell is the same as the number of antenna channels and is set in one-to-one correspondence.
- the directional beam weight vector is also used to control the transmit power of the directional beam.
- the transmit power is set according to the key performance indicator (KPI) of the network, where the KPI includes the terminal distribution and service type in the cell. , traffic load, etc.
- KPI key performance indicator
- the directional beam weight vector corresponding to the transmit power is determined, so that the directional beam achieves optimal coverage and capacity gain.
- the base station multiplies the data carried on the time-frequency resource of each cell by the directional beam weight vector of the current cell, and obtains the data of the time-frequency resource mapped to each channel of the first antenna, which may include:
- the base station multiplies the data carried on the time-frequency resources of each cell by the cell beam weight vector of the local cell, and the cell beam weight vector is used to form a directional beam covering the corresponding (partial or all) cells of the respective cells;
- the base station multiplies the data carried on the time-frequency resource block of each cell by the service beam weight vector of the local cell, and the service beam weight vector is used to form a directional beam that is aligned with the terminal in the local cell.
- the cell beam weight vector is generated according to the basic array pattern of the antenna, the beam pointing, the main lobe width, and the side lobe suppression.
- the antenna can form multiple independent beams that are complementary to the upper area.
- the determination of the cell beam weight vector can be adjusted according to the antenna index, which is not limited by the present invention.
- the cell beam weight vector of the two cells may be set to an orthogonal form, so that the beam coherence covering the two cells is very small, that is, the overlap between the beams is small.
- the service beam weight vector is the beam weight obtained by decomposing the channel feature of the terminal allocated by the time-frequency domain resource in the cell; or the service beam weight vector is the weight code fed back by the terminal allocated by the time-frequency domain resource in the cell. this.
- the following takes an 8-channel antenna as an example to illustrate that the directional coverage of broadcast signals of two cells is implemented by setting a cell beam weight vector of two cells.
- the time-frequency resource is composed of multiple time-frequency resource blocks, and the time-frequency resource block is the smallest unit of resource scheduling in the LTE system.
- Weighting For the data on each time-frequency resource block, the following formula can be specifically used. Weighting:
- (n s , k, l) is the index of the time-frequency resource block
- n s represents the time slot
- k represents the carrier
- l represents the symbol
- the resource block can be uniquely identified by the index (n s , k, l)
- Y i (n s , k, l) indicates that the time-frequency resource block (n s , k, l) corresponds to the data of the i-th channel
- n is the cell label
- Sector n represents the cell n
- Data indicating the port m of the cell n (the port of the cell refers to a logical port for transmitting a reference signal of the cell);
- the weights in the beam weight vector of each cell correspond to the channel of the antenna, and the weight corresponds to which channel, that is, which channel the weighted data is mapped onto.
- the beam transmitted by the first antenna is as shown in FIG. 4a. As can be seen from FIG. 4a, the first antenna transmits two different beams 51 and 52, and each of the two beams covers one cell. And the overlap between the two beams is small.
- the 8-channel antenna is taken as an example to illustrate how to time-frequency resources using the joint allocation method and time-frequency resources using the independent allocation method to form a beam that aligns the terminal:
- n s denotes a time slot
- k denotes a carrier
- l denotes a symbol
- the resource block can be uniquely identified by an index (n s , k, l)
- the data stream m representing the terminal of the cell X corresponds to the data of the time-frequency resource block (n s , k, l)
- Y i (n s , k, l) indicates that the time-frequency resource block (n s , k, l) corresponds to The data of the i-th channel.
- n s denotes a time slot
- k denotes a carrier
- l denotes a symbol
- the resource block can be uniquely identified by an index (n s , k, l)
- the data stream m indicating the terminal in the cell n corresponds to the data of the time-frequency resource block (n s , k, l)
- Y i (n s , k, l) indicates that the time-frequency resource block (n s , k, l) corresponds to The data of the i-th channel.
- the weight vector (ie, the service beam weight vector) used when aligning the beams of the terminals residing in the two cells may be set according to actual requirements, and the purpose thereof is to align the beam emitted by the antenna with the terminal, and the specific implementation thereof is It is well known to those skilled in the art, and thus the present invention will not be described in detail.
- the method in this embodiment may further include: the base station allocates time-frequency resources of the two cells.
- the allocation of time-frequency resources refers to determining the data carried on the time-frequency resources.
- the time-frequency resource allocated by the base station to the two cells may be implemented by using at least one of the following manners:
- the time-frequency resources of the two cells are separately scheduled (hereinafter referred to as independent scheduling);
- the same time-frequency resources in the two cells are used to carry the same data, or two cells are used.
- One of the same time-frequency resources carries data, and other time-frequency resources in the same time-frequency resource in the two cells do not carry data (hereinafter referred to as joint scheduling).
- the independent scheduling refers to allocating the time-frequency resources of the cell to the local cell or the terminal residing in the local cell, and the resource scheduling between different cells does not affect each other; for example, the base station allocates the time-frequency resource of the first cell.
- the first cell is allocated to carry data of the first cell, and the base station allocates time-frequency resources of the second cell to the second cell for carrying data of the second cell.
- Joint scheduling refers to allocating the same time-frequency resources in two cells to the same terminal (it is easy to know that the terminal resides in one of the two cells); for example, for the first cell and the second cell, terminal A
- the time-frequency resources of the first cell and the second cell are allocated to the terminal A, and the time-frequency resources of the first cell and the second cell are used for the bearer transmission to the bearer.
- Terminal A data is
- the joint scheduling means that for the same time-frequency resource, only one of the two cells uses the time-frequency resource, and the other cell does not use the time-frequency resource; for example, for the first cell and the second cell, the terminal A is in the overlapping area of the first cell and the second cell.
- the time-frequency resource of the first cell is allocated to the terminal A, and is used to carry the data sent to the terminal A, and the time-frequency resource of the second cell is vacated. Do not use.
- Joint scheduling is typically used to allocate resources to terminals in overlapping areas of two cells, which can reduce channel interference between terminals within overlapping coverage of two neighboring cells. It is easy to know that, ideally, the overlapping area of the two cells is small or even there is no overlapping area. In this case, the control channel resources can be allocated only in an independent allocation manner.
- Step S203 The base station combines the data carried on the time-frequency resources of the two cells after the weighting process to obtain the combined data.
- two cells may use the same frequency band, and two cells may also adopt frequency bands that do not overlap each other to achieve the scheduling effect of inter-frequency interference coordination.
- the working frequency bands of the two cells can be set in the following two ways:
- the base station 2 is configured with three directional antennas, and each directional antenna corresponds to two cells, wherein one cell adopts a frequency point of f0 and another cell adopts The frequency of the frequency is f1, and the adjacent cells adopt different frequency points;
- a frequency band set is set, and the frequency band set includes a plurality of different frequency bands, and the base station dynamically selects the frequency band used by the cell from the frequency band set.
- This step S203 can be implemented as follows:
- the data of the same frequency point is processed according to the following formula: (s1+s2+...+Sn)*e jw0t , where n represents the number of cells covered by the first antenna, n ⁇ 2, S1 to Sn represent signals from respective cells, w0 is frequency information of S1 to Sn, and e jw0t indicates that the signal is modulated onto a carrier of frequency w0;
- the data of different frequency points are processed according to the following formula: S1*e jw1t + S2*e jw2t + ... +Sn*e jw3t , where n represents the first antenna coverage
- S1 to Sn represent signals from each cell
- w1 is the frequency information of S1
- w2 is the frequency information of S2
- wn is the frequency information of Sn
- e jwnt represents the modulation of the signal Go to the carrier with frequency wn.
- the method may include:
- the data of each cell is first weighted according to the foregoing step S202, and mapped to the corresponding antenna channel. Then, the data mapped by each channel is separately framing, and the frame data of each channel in each cell is obtained. Next, the frame data of each channel in each cell obtained is subjected to Inverse Fast Fourier Transform ("IFFT") processing. Finally, the IFFT-processed frame data on the same channel is subjected to power normalization and addition processing, and then subjected to medium-frequency processing, and then radiated to the air interface through the antenna.
- IFFT Inverse Fast Fourier Transform
- the power normalization and summation processing includes two processes of power normalization processing and addition processing, and the sequence thereof is not limited in this embodiment, and may be normalized first, then added, or first. Add and process, and then normalize.
- power normalization processing on the data can prevent the power of the remote radio unit from being over-limit caused by the excessive power of the digital domain.
- the method may include:
- the data carried on the time-frequency resources of the two cells are simultaneously framing in units of channels, and frame data of two cells is obtained.
- the data of each cell is first weighted according to the above step S202, and mapped to the corresponding antenna channel. Then, map the two cells to the number on the same antenna channel According to the framing, frame data of two cells is obtained. Finally, the frame data of the two cells are subjected to IFFT processing and intermediate radio frequency processing, and then radiated to the air interface through the antenna.
- This implementation is applicable to the case where multiple cells use the same frequency band.
- step S203 specifically includes:
- the method may include:
- the frequency-frequency resource carrying the frame data of each cell is subjected to frequency conversion combining processing.
- the data of each cell is first weighted according to the foregoing S202, and mapped to the corresponding antenna channel. Then, the data mapped by each channel is separately framing, and the frame data of each channel in each cell is obtained. Then, the obtained frame data of each channel in each cell is subjected to IFFT processing, and the frame data of the two cells after the IFFT processing is subjected to intermediate frequency multi-carrier combining processing. Finally, the frame data processed by the intermediate frequency multi-carrier combining method is subjected to radio frequency processing, and then radiated to the air interface through the antenna.
- the intermediate frequency multi-carrier combining processing refers to up-converting carriers of two cells, and then combining the carriers after up-conversion. Combining means combining signals from different frequency bands together.
- This implementation is applicable to the case where two cells adopt frequency bands that do not overlap each other.
- Step S204 The base station transmits two directional beams through the first antenna, where the two directional beams are used to transmit the combined data, the directions of the two directional beams are different, and the two directional beams and the two cells are in one-to-one correspondence;
- the base station transmits a directional beam through the first antenna, and the one directional beam is used to transmit the combined data, and the beam direction of the one directional beam is pointed by the base station according to the location of a single terminal in the at least two cells.
- the direction of the at least two directional beams may be pointed by the base station according to the location distribution of all terminals in the cell corresponding to the directional beam, or may be determined by the base station according to the cell corresponding to the directional beam. The position distribution of a single terminal in the direction is pointed.
- the two directional beams formed respectively cover respective corresponding cells or cover a partial region of the corresponding cell (for example, the middle or the left or the right).
- the situation is that the direction is distributed according to the location distribution of all the terminals in the cell corresponding to the directional beam; when the antenna transmits the data processed by the weighting of the service beam weights, the two directional beams formed are aligned respectively.
- the terminal in the cell in this case, is directed according to the location distribution of a single terminal in the cell corresponding to the directional beam.
- Step S205 The base station receives the signal through the first antenna. This step 205 is an optional step.
- Step S206 The base station processes signals received by all channels of the first antenna to obtain received data of two cells. This step S206 is an optional step.
- the base station sends data of at least two cells by using at least two beams that are transmitted by the first antenna, and at least two beams that are transmitted by the first antenna and at least two cells that are divided by the first antenna coverage area.
- these cells are all configured with their own transmission bandwidth.
- the total transmission bandwidth that can be used is significantly increased, thereby achieving an increase in network capacity.
- the embodiment of the present invention implements the orientation of the beam covering the cell by processing the baseband signal, and thus can be implemented based on the existing base station antenna structure without increasing the hardware cost of the antenna system.
- the base station can determine whether the first antenna transmits one directional beam or multiple directional beams according to the actual location distribution of the terminal in the cell, which is flexible.
- FIG. 5 shows still another communication method according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
- Step S301 The base station divides the coverage area of the second antenna into at least two cells.
- the base station has at least one antenna, and the antenna may be a directional antenna or an omnidirectional antenna.
- the antenna is an omnidirectional antenna, the base station has one antenna; when the antenna is a directional antenna, the base station has at least two antennas, for example, three directional antennas may be provided.
- the second antenna is any one of the at least one antennas for receiving data carried on a time-frequency resource of a cell in its coverage area.
- the second antenna and the first antenna in the embodiment shown in FIG. 2 or FIG. 3 may be the same antenna.
- Step S302 The base station receives the signal through the second antenna.
- Step S303 The base station processes signals received by all channels of the second antenna to obtain received data of at least two cells.
- the step S303 can include:
- the base station performs single cell processing on the signals received by all channels of the second antenna in units of cells;
- the base station simultaneously performs at least two cell processing on the signals received by all channels of the second antenna.
- the base station performs single cell processing on the signals received by all channels of the second antenna in units of cells, including:
- the base station uses the resource allocation parameters of each cell to process the signals received by all the channels of the second antenna to obtain the received data of each cell. For example, the base station uses the resource allocation parameters of the first cell to perform the signals received by all the channels. Processing, obtaining the received data of the first cell; then, the base station uses the resource allocation parameter of the second cell to process the signals received by all the channels again, The received data of the second cell is obtained.
- the resource allocation parameter of the cell is used to indicate the allocation status of the time-frequency resource allocation of the cell.
- the single cell processing is applicable to a case where adjacent cells allocate the same time-frequency resources to terminals in respective cells.
- the base station uses the resource allocation parameters of all the cells to perform joint detection processing on the signals received by all the channels of the second antenna.
- the joint detection process means that the base station uses the resource allocation parameters of all cells and simultaneously receives all the channels of the second antenna.
- the signals are processed to obtain received data for each cell.
- the resource allocation parameter of the first cell and the resource allocation parameter of the second cell simultaneously process the signals received by all the channels to obtain the received data of the first cell and the second cell.
- the joint processing is applicable to a case where a neighboring cell allocates the same time-frequency resource to a terminal in a respective cell, or a case in which a terminal of only one cell in a neighboring cell uses a certain time-frequency resource.
- the joint detection process can employ interference suppression combining techniques.
- the second antenna in this embodiment may be the same antenna as the first antenna in the embodiment shown in FIG. 2 and FIG. 3, or may be independent and different antennas.
- the base station uses the second antenna to receive signals of at least two cells, and each of the cells is configured with its own transmission bandwidth. For a coverage area of one antenna, the total transmission bandwidth that can be used is significantly increased, thereby realizing The increase in network capacity. Moreover, the base station can process the signals received by the second antenna in a manner that is not available, and obtain received data of at least two cells, which has wide applicability.
- FIG. 6 shows a communication device provided by an embodiment of the present invention.
- the communication device may be a base station.
- the communication device includes:
- the processing module 401 is configured to divide the coverage area of the first antenna of the base station into at least two cells, the base station has at least one antenna, the first antenna is any one of the at least one antenna, and the time of the at least two cells
- the data carried on the frequency resource is weighted to map the data carried on the time-frequency resource of the at least two cells to the channel of the first antenna; and the data carried on the time-frequency resource of the at least two cells after the weighting process Merging to obtain the combined data;
- the transmitting module 402 is configured to transmit, by using the first antenna, at least two directional beams, where the at least two directional beams are used to transmit the combined data, the directions of the at least two directional beams are different, and the at least two directional beams and the at least two
- the one-to-one correspondence of the cells the beam directions of the at least two directional beams are directed according to the position distribution of all the terminals in the cell corresponding to the directional beam; or one directional beam is transmitted through the first antenna, and one directional beam is used to transmit the combined data.
- the beam direction of a directional beam is directed according to the location of a single terminal in at least two cells.
- the transmitting module 402 is further configured to transmit, by using the first antenna, at least two directional beams, where the at least two directional beams are used to send the combined data, the orientations of the at least two directional beams are different, and at least two orientations are used.
- the beam is in one-to-one correspondence with at least two cells, and at least two directional beams are aligned with one terminal in the corresponding cell. For example, taking two beams corresponding to two cells as an example, one directional beam is aligned with the terminal a in the cell A. Another directional beam is directed to terminal b in cell B.
- the base station sends data of at least two cells by using at least two beams that are transmitted by the first antenna, and at least two beams that are transmitted by the first antenna and at least two cells that are divided by the first antenna coverage area.
- these cells are all configured with their own transmission bandwidth.
- the total transmission bandwidth that can be used is significantly increased, thereby achieving an increase in network capacity.
- the embodiment of the present invention implements the orientation of the beam covering the cell by processing the baseband signal, and thus can be implemented based on the existing base station antenna structure without increasing the hardware cost of the antenna system.
- the base station can determine whether the first antenna transmits one directional beam or multiple directional beams according to the actual location distribution of the terminal in the cell, which is flexible.
- FIG. 7 shows another communication device according to an embodiment of the present invention.
- the communication device may be a base station.
- the communication device includes:
- the processing module 501 is configured to divide the coverage area of the first antenna of the base station into at least two cells, the base station has at least one antenna, the first antenna is any one of the at least one antenna, and the time of the at least two cells
- the data carried on the frequency resource is weighted to map the data carried on the time-frequency resources of the at least two cells to the channel of the first antenna, and is used to carry the time-frequency resources of the at least two cells after the weighting process.
- the data is merged to obtain the combined data;
- the transmitting module 502 is configured to transmit, by using the first antenna, at least two directional beams, where the at least two directional beams are used to send the combined data obtained by the processing module 501, where the orientations of the at least two directional beams are different, and at least two orientations are used.
- the beam is in one-to-one correspondence with at least two cells, and the beam directions of the at least two directional beams are directed according to the position distribution of all terminals in the cell corresponding to the directional beam; or, by using the first antenna, one directional beam is used, and one directional beam is used for
- the merged data obtained by the processing module 501, the beam direction of one directional beam is directed according to the location of a single terminal in at least two cells.
- the processing module 501 may be specifically configured to: multiply the data carried on the time-frequency resources of each cell by the directional beam weight vector of the local cell, and obtain the time-frequency resource mapping to the first Data on each channel of an antenna.
- the processing module 501 may be specifically configured to multiply the data carried on the time-frequency resources of each cell by the cell beam weight vector of the local cell, and the cell beam weight vector is used to form a coverage corresponding cell or coverage. a directional beam of a partial region of the corresponding cell; or, for respectively, multiplying data carried on a time-frequency resource block of each cell by a service beam weight vector of the current cell, and the service beam weight vector is used to form an alignment Directional beam of the terminal in the cell.
- the service beam weight vector may be a beam weight obtained by decomposing the channel feature of the terminal allocated by the time-frequency domain resource in the cell; or the service beam weight vector may be the terminal feedback allocated by the time-frequency domain resource in the cell.
- Weight codebook may be a beam weight obtained by decomposing the channel feature of the terminal allocated by the time-frequency domain resource in the cell; or the service beam weight vector may be the terminal feedback allocated by the time-frequency domain resource in the cell.
- the directional beam weight vector may also be used to control the transmit power of the directional beam, and the transmit power is determined according to network key performance indicators.
- At least two cells may adopt the same frequency band or at least two cells may adopt frequency bands that do not overlap each other.
- processing module 501 may be specifically configured to:
- the data of the same frequency point is processed according to the following formula: (s1+s2+...+Sn)*e jw0t , where n represents the number of cells covered by the first antenna, N ⁇ 2, S1 to Sn represent signals from respective cells, and w0 is frequency information of S1 to Sn;
- the base station sends data of at least two cells by using at least two beams that are transmitted by the first antenna, and at least two beams that are transmitted by the first antenna and at least two cells that are divided by the first antenna coverage area.
- these cells are all configured with their own transmission bandwidth.
- the total transmission bandwidth that can be used is significantly increased, thereby achieving an increase in network capacity.
- the embodiment of the present invention implements the orientation of the beam covering the cell by processing the baseband signal, and thus can be implemented based on the existing base station antenna structure without increasing the hardware cost of the antenna system.
- the base station can determine whether the first antenna transmits one directional beam or multiple directional beams according to the actual location distribution of the terminal in the cell, which is flexible.
- FIG. 8 shows still another communication device according to an embodiment of the present invention. As shown in FIG. 8, the communication device includes:
- the receiving module 601 is configured to receive a signal by using the second antenna
- the processing module 602 is configured to divide the coverage area of the second antenna into at least two cells, the base station has at least one antenna, and the second antenna is any one of the at least one antenna; all channels processing the second antenna are received
- the signal is obtained by receiving data of at least two cells.
- the processing module 602 is specifically configured to perform single-cell processing on the signals received by all channels of the second antenna in units of cells, or to simultaneously combine signals received by all channels of the second antenna. Detection processing.
- the base station uses the second antenna to receive signals of at least two cells, and each of the cells is configured with its own transmission bandwidth. For a coverage area of one antenna, the total transmission bandwidth that can be used is significantly increased, thereby realizing The increase in network capacity. Moreover, the base station can process the signals received by the second antenna in a manner that is not available, and obtain received data of at least two cells, which has wide applicability.
- FIG. 9 shows still another communication device according to an embodiment of the present invention.
- the communication device may be a base station or a part of a base station, such as a BBU.
- the base station 700 includes at least one antenna 701 and a radio frequency module 702.
- the BBU 703 is connected to the radio frequency module 702, and the radio frequency module 702 passes The cable is connected to the antenna 701.
- the BBU 703 outputs a baseband signal to the RF module 702.
- the RF module 702 converts the baseband signal to the intermediate frequency signal, then converts the intermediate frequency signal to the RF signal, and then employs a power amplifier unit (eg, RF power).
- the amplifier amplifies the radio frequency signal, and finally transmits the amplified radio frequency signal through the antenna 701.
- the radio frequency signal from the terminal is transmitted to the radio frequency module 702 via the antenna 701.
- the radio frequency module 702 first amplifies the radio frequency signal, and then The frequency is converted to an intermediate frequency signal, then converted to a baseband signal, and then the baseband signal is output to the BBU 703.
- the radio frequency module 702 may include a digital intermediate frequency combining module, a digital to analog converter (DAC), a transceiver module, and a multiple carrier power amplifier (MCPA) module.
- the BBU 703 transmits a multi-channel digital baseband signal to the digital intermediate frequency combining module, and the digital intermediate frequency combining module uses the digital intermediate frequency technology to perform frequency conversion and combining processing on the processed multi-channel digital baseband signal to obtain a digital intermediate frequency signal.
- the DAC performs digital-to-analog conversion on the obtained digital intermediate frequency signal and outputs it to the transceiver module.
- the transceiver module performs the conversion of the intermediate frequency signal to the radio frequency signal.
- the MCPA amplifies the RF signal converted by the transceiver module, and outputs the amplified RF signal to the antenna 701 for transmission.
- the BBU 703 includes a communication interface 704, a processor 705, a memory 706, and a communication bus 707.
- Communication bus 707 is used to implement connection communication between processor 705, memory 706, and communication interface 704.
- Communication interface 704 implements a communication connection between processor 705 and other modules (e.g., radio frequency module 702, antenna 701), and a coaxial cable or the like can be used.
- modules e.g., radio frequency module 702, antenna 701
- coaxial cable or the like can be used.
- the memory 706 can be used to store software programs and application modules, and the processor 705 executes various functional applications and data processing of the devices by running software programs stored in the memory 706 and application modules.
- the memory 706 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as dividing a coverage area of the first antenna into at least two cells, etc.), and the like;
- the storage data area may store data created according to the use of the device (such as data obtained by the base station combining the data carried on time-frequency resources of at least two cells) and the like.
- the memory 706 may include a high speed RAM (Random Access Memory), and may also include a non-volatile memory such as at least one magnetic disk storage device, a flash memory device, or other volatile solid state. Storage device.
- Processor 705 is the control center of base station 700, which connects various portions of the entire device using various interfaces and lines, by running or executing software programs and/or application modules stored in memory 706, and recalling data stored in memory 706.
- the various functions and processing data of the base station 700 are performed to perform overall monitoring of the base station 700.
- processor 705 can implement partitioning the coverage area of the first antenna of the base station into at least two a cell, the base station has at least one antenna, and the first antenna is any one of the at least one antenna; and weighting data carried on the time-frequency resources of the at least two cells that are divided to perform at least two cells
- the data carried on the time-frequency resource is mapped to the channel of the first antenna; the data carried on the time-frequency resources of the at least two cells after the weighting process are combined to obtain the combined data; and at least two are transmitted through the first antenna.
- a directional beam at least two directional beams are used for transmitting the combined data, at least two directional beams have different directions, at least two directional beams are corresponding to at least two cells, and beam directions of at least two directional beams are according to Orienting the location distribution of all terminals in the cell corresponding to the directional beam; or transmitting a directional beam through the first antenna, A directional beam is used to transmit the combined data, and the beam direction of one directional beam is directed according to the position of a single terminal in at least two cells.
- the processor 705 may be configured to multiply the data carried on the time-frequency resources of each cell by the directional beam weight vector of the current cell, and obtain the data of the time-frequency resources mapped to the respective channels of the first antenna.
- the processor 705 may be configured to multiply the data carried on the time-frequency resources of each cell by the cell beam weight vector of the local cell, and the cell beam weight vector is used to form a coverage corresponding to each cell or cover each a directional beam of a partial region of the corresponding cell; multiplying the data carried on the time-frequency resource block of each cell by the service beam weight vector of the local cell, and the service beam weight vector is used to form a terminal aligned with the local cell Directional beam.
- the service beam weight vector may be a beam weight obtained by decomposing the channel feature of the terminal allocated to the time-frequency domain resource in the cell; or the service beam weight vector may be the right of the terminal allocated to the time-frequency domain resource in the cell. Value book.
- the directional beam weight vector can also be used to control the transmit power of the directional beam, and the transmit power is determined according to network key performance indicators.
- At least two cells may adopt the same frequency band or at least two cells may adopt frequency bands that do not overlap each other.
- the processor 705 may implement, when at least two cells adopt the same frequency band, process data of the same frequency point according to the following formula: (s1+s2+...+Sn)*e jw0t , where n represents the first The number of cells covered by one antenna, n ⁇ 2, S1 ⁇ Sn represent signals from each cell, w0 is frequency information of S1 ⁇ Sn, and e jw0t represents modulation of signals to carriers of frequency w0; When two cells adopt frequency bands that do not overlap each other, the data of different frequency points are processed according to the following formula: S1*e jw1t + S2*e jw2t + ...
- n the coverage of the first antenna
- S1 ⁇ Sn represent signals from each cell
- w1 is the frequency information of S1
- w2 is the frequency information of S2
- wn is the frequency information of Sn
- e jwnt represents The signal is modulated onto a carrier of frequency wn.
- the processor 705 may be configured to divide the coverage area of the second antenna into at least two cells, the base station has at least one antenna, and the second antenna is any one of the at least one antenna; The antenna receives the signal; processes the signals received by all channels of the second antenna to obtain received data of at least two cells.
- the processor 705 may be configured to perform single-cell processing on signals received by all channels of the second antenna in units of cells, and perform joint detection processing on signals received by all channels of the second antenna.
- non-transitory computer readable storage medium comprising instructions, such as a memory 706 comprising instructions executable by processor 705 of base station 700 to perform the above method.
- the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.
- a non-transitory computer readable storage medium that, when executed by a processor of a base station, enables a base station to perform the method of at least one corresponding embodiment of FIGS. 2, 3, and 5.
- the communication device provided by the foregoing embodiment implements communication, only the division of each functional module described above is illustrated. In an actual application, the function distribution may be completed by different functional modules, that is, the device. The internal structure is divided into different functional modules to perform all or part of the functions described above.
- the communication device provided by the foregoing embodiment is the same as the embodiment of the communication method, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.
- the storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
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Abstract
Description
Claims (18)
- 一种通信方法,其特征在于,所述方法包括:基站将第一天线的覆盖区域划分为至少两个小区,所述基站具有至少一根天线,所述第一天线为所述至少一根天线中的任一根;所述基站对所述至少两个小区的时频资源上承载的数据进行加权处理,以将所述至少两个小区的时频资源上承载的数据映射到所述第一天线的通道上;所述基站将加权处理后的所述至少两个小区的时频资源上承载的数据合并,得到合并后的数据;所述基站通过所述第一天线发射至少两个定向波束,所述至少两个定向波束用于发送所述合并后的数据,所述至少两个定向波束的指向各不相同,所述至少两个定向波束与所述至少两个小区一一对应,所述至少两个定向波束的波束方向由所述基站根据所述定向波束对应的小区中的所有终端的位置分布进行指向;或者,所述基站通过所述第一天线发射一个定向波束,所述一个定向波束用于发送所述合并后的数据,所述一个定向波束的波束方向由所述基站根据所述至少两个小区中的单个终端的位置进行指向。
- 根据权利要求1所述的方法,其特征在于,所述基站对所述至少两个小区的时频资源上承载的数据进行加权处理,包括:所述基站将各个小区的时频资源上承载的数据分别与本小区的定向波束权值向量相乘,得到所述时频资源映射到所述第一天线的各个通道上的数据。
- 根据权利要求2所述的方法,其特征在于,所述基站将各个小区的时频资源上承载的数据分别与本小区的定向波束权值向量相乘,得到所述时频资源映射到所述第一天线的各个通道上的数据,包括:所述基站将各个小区的时频资源上承载的数据分别与所述本小区的小区波束权值向量相乘,所述小区波束权值向量用于形成覆盖各自对应的小区或者覆盖各自对应的小区的部分区域的定向波束;或者,所述基站将各个小区的时频资源块上承载的数据分别与本小区的业务波束权值向量相乘,所述业务波束权值向量用于形成对准本小区内的终端的定向波 束。
- 根据权利要求3所述的方法,其特征在于,所述业务波束权值向量为所述本小区内时频域资源所分配终端的信道特征分解得到的波束权值;或者所述业务波束权值向量为所述本小区内时频域资源所分配终端反馈的权值码本。
- 根据权利要求3所述的方法,其特征在于,所述定向波束权值向量还用于控制所述定向波束的发射功率,所述发射功率根据网络关键性能指标KPI确定。
- 根据权利要求1-5任一项所述的方法,其特征在于,所述至少两个小区采用相同的频段或者所述至少两个小区采用互不重叠的频段。
- 根据权利要求1-6任一项所述的方法,其特征在于,所述基站对所述至少两个小区的时频资源上承载的数据进行合并,包括:当所述至少两个小区采用相同的频段时,将相同频点的数据按照以下公式进行处理:(s1+s2+……+Sn)*ejw0t,其中,n表示第一天线覆盖的小区的个数,n≥2,S1~Sn表示来自于各个小区的信号,w0是S1~Sn的频点信息,ejw0t表示将信号调制到频率为w0的载波上;当所述至少两个小区采用互不重叠的频段时,将不同频点的数据按照以下公式进行处理:S1*ejw1t+S2*ejw2t+……+Sn*ejwnt,其中,n表示第一天线覆盖的小区的个数,n≥2,S1~Sn表示来自于各个小区的信号,w1是S1的频点信息,w2是S2的频点信息,……,wn是Sn的频点信息,ejwnt表示将信号调制到频率为wn的载波上。
- 一种通信方法,其特征在于,所述方法包括:基站将第二天线的覆盖区域划分为至少两个小区,所述基站具有至少一根天线,所述第二天线为所述至少一根天线中的任一根;基站通过所述第二天线接收信号;所述基站处理所述第二天线的所有通道接收到的信号,得到所述至少两个小区的接收数据。
- 根据权利要求8所述的方法,其特征在于,所述基站处理所述第二天线的所有通道接收到的信号,得到所述至少两个小区的接收数据,包括:所述基站以小区为单位,分别对所述第二天线所有通道接收到的信号进行单小区处理;或者,所述基站对所述第二天线所有通道接收到的信号同时进行联合检测处理。
- 一种通信装置,其特征在于,所述装置包括:处理模块,用于将基站的第一天线的覆盖区域划分为至少两个小区,所述基站具有至少一根天线,所述第一天线为所述至少一根天线中的任一根;对所述至少两个小区的时频资源上承载的数据进行加权处理,以将所述至少两个小区的时频资源上承载的数据映射到所述第一天线的通道上;将加权处理后的至少两个小区的时频资源上承载的数据合并,得到合并后的数据;发射模块,用于通过所述第一天线发射至少两个定向波束,所述至少两个定向波束用于发送所述处理模块得到的所述合并后的数据,所述至少两个定向波束的指向各不相同,所述至少两个定向波束与所述至少两个小区一一对应,所述至少两个定向波束的波束方向根据所述定向波束对应的小区中的所有终端的位置分布进行指向;或者,通过所述第一天线发射一个定向波束,所述一个定向波束用于发送所述处理模块得到的所述合并后的数据,所述一个定向波束的波束方向根据所述至少两个小区中的单个终端的位置进行指向。
- 根据权利要求10所述的装置,其特征在于,所述处理模块,具体用于将各个小区的时频资源上承载的数据分别与本小区的定向波束权值向量相乘,得到所述时频资源映射到所述第一天线的各个通道上的数据。
- 根据权利要求11所述的装置,其特征在于,所述处理模块,具体用于将各个小区的时频资源上承载的数据分别与所述本小区的小区波束权值向量相乘,所述小区波束权值向量用于形成覆盖各自对应的小区或者覆盖各自对应的小区的部分区域的定向波束;将各个小区的时频资源块上承载的数据分别与本小区的业务波束权值向量相乘,所述业务波束权值向量用于形成对准本小区内的终端的定向波束。
- 根据要求12所述的装置,其特征在于,所述业务波束权值向量为所述本小区内时频域资源所分配终端的信道特征分解得到的波束权值;或者所述业务波束权值向量为所述本小区内时频域资源所分配终端反馈的权值码本。
- 根据要求12所述的装置,其特征在于,所述定向波束权值向量还用于控制所述定向波束的发射功率,所述发射功率根据网络关键性能指标KPI确定。
- 根据权利要求10-14任一项所述的装置,其特征在于,所述至少两个小区采用相同的频段或者所述至少两个小区采用互不重叠的频段。
- 根据权利要求10-15任一项所述的装置,其特征在于,所述处理模块,具体用于:当所述至少两个小区采用相同的频段时,将相同频点的数据按照以下公式进行处理:(s1+s2+……+Sn)*ejw0t,其中,n表示第一天线覆盖的小区的个数,n≥2,S1~Sn表示来自于各个小区的信号,w0是S1~Sn的频点信息,ejw0t表示将信号调制到频率为w0的载波上;当所述至少两个小区采用互不重叠的频段时,将不同频点的数据按照以下公式进行处理:S1*ejw1t+S2*ejw2t+……+Sn*ejwnt,其中,n表示第一天线覆盖的小区的个数,n≥2,S1~Sn表示来自于各个小区的信号,w1是S1的频点信息,w2是S2的频点信息,……,wn是Sn的频点信息,ejwnt表示将信号调制到频率为wn的载波上。
- 一种通信装置,其特征在于,所述装置包括:接收模块,用于通过所述第二天线接收信号;处理模块,用于将第二天线的覆盖区域划分为至少两个小区,所述基站具有至少一根天线,所述第二天线为所述至少一根天线中的任一根;处理所述第二天线的所有通道接收到的信号,得到所述至少两个小区的接收数据。
- 根据权利要求17所述的装置,其特征在于,所述处理模块,具体用于以小区为单位,分别对所述第二天线所有通道接收到的信号进行单小区处理; 或者,用于对所述第二天线所有通道接收到的信号同时进行联合检测处理。
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US10798626B2 (en) * | 2018-02-21 | 2020-10-06 | Cellwize Wireless Technologies Ltd. | Method of managing a cellular network and system thereof |
US11357050B2 (en) * | 2018-09-24 | 2022-06-07 | Nxp Usa, Inc. | Optimal beamforming in millimeter-wave cellular networks using multiple random access preambles |
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