WO2017121214A1 - 一种无线通信的回程传输方法、控制器、基站、网关 - Google Patents

一种无线通信的回程传输方法、控制器、基站、网关 Download PDF

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Publication number
WO2017121214A1
WO2017121214A1 PCT/CN2016/109277 CN2016109277W WO2017121214A1 WO 2017121214 A1 WO2017121214 A1 WO 2017121214A1 CN 2016109277 W CN2016109277 W CN 2016109277W WO 2017121214 A1 WO2017121214 A1 WO 2017121214A1
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Prior art keywords
backhaul
base station
codebook
transceiver
gateway
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PCT/CN2016/109277
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English (en)
French (fr)
Inventor
庄宏成
罗泽宙
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16884766.3A priority Critical patent/EP3389302B1/en
Publication of WO2017121214A1 publication Critical patent/WO2017121214A1/zh
Priority to US16/036,142 priority patent/US10797775B2/en

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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
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/14—Backbone network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/045—Interfaces between hierarchically different network devices between access point and backbone network device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a backhaul transmission method, a controller, a base station, and a gateway for wireless communication.
  • Ultra-dense networks are based on terminal access as short as possible to improve terminal throughput and The regional throughput of the system is one of the core technologies of the next generation wireless network.
  • the present patent application provides a suitable backhaul transmission method, controller, base station, gateway and network system for wireless communication.
  • the present application provides a backhaul transmission method for wireless communication, including: a first base station transmitting information of a backhaul requirement of the first base station to a controller; and the first base station acquiring a code from the controller The information of the codebook is determined according to the backhaul requirement of the first base station; the first base station uses the codebook to perform backhaul transmission with the gateway.
  • different data can be transmitted on the same time-frequency resource by introducing a codebook in the backhaul transmission.
  • This can increase the capacity of the backhaul link.
  • the information of the codebook of the backhaul transmission is determined, which can adapt to the backhaul requirements of different base stations, thereby improving the backhaul capacity of the system.
  • the first base station acquires a code from the controller Information of the set;
  • the codebook set includes J codebooks, where J>L, where L is the number of backhaul transceivers of the base station communicating with the gateway, the codebook being from the codebook set Selected.
  • the codebook set is determined according to specific communication requirements, and waste of code resources can be avoided.
  • the codebook set is a codebook set corresponding to a first backhaul cluster
  • the first backhaul cluster is associated with the gateway a set of backhaul transceivers of the base station in which the first backhaul transceiver performs backhaul transmission
  • the backhaul links of different backhaul clusters are spatially orthogonal
  • the first backhaul cluster includes the first backhaul transceiver of the first base station .
  • the patent application also provides the possibility of code multiplexing by dividing the backhaul cluster and making full use of the orthogonality of the space. The backhaul capacity of the system is further improved.
  • the first base station sends the information about the backhaul requirement of the first base station to the controller, including: Transmitting, by the first base station, information about a backhaul requirement of the first backhaul transceiver of the first base station to the controller; the first base station acquiring information of the codebook from the controller, including: the first Obtaining, by the base station, information of a codebook of the first backhaul transceiver of the first base station, where the information of the codebook of the first backhaul transceiver of the first base station is according to the first And determining, by the backhaul requirement of the first backhaul transceiver of the base station, a codebook of the first backhaul transceiver of the first base station is selected from a codebook set corresponding to the first backhaul cluster.
  • the codebook is a non-orthogonal codebook.
  • This patent application can further increase the backhaul capacity of the system by using a non-orthogonal codebook.
  • the information of the codebook includes: a codebook serial number or a codeword serial number.
  • the information of the codebook is determined according to the backhaul requirement of the first base station, including The information of the codebook is determined according to the backhaul requirement of the first base station and the backhaul capacity of the first base station.
  • the first base station performs the backhaul transmission with the gateway by using the codebook, including: The first base station maps data into modulation symbols according to the codebook, and the first base station sends the modulation symbols to the gateway.
  • the first base station performs the foregoing by using the codebook and the gateway Backhaul transmission, including: The first base station receives modulation symbols from the gateway, and the first base station demaps the modulation symbols into data according to the codebook.
  • the present patent application provides a backhaul transmission method for wireless communication, including: acquiring, by a controller, information about a backhaul requirement of a first base station; the controller to a gateway to which the first base station belongs and the first The base station transmits information of the codebook; the information of the codebook is determined by the controller according to the backhaul requirement, and the backhaul transmission is a transmission between the first base station and the gateway.
  • the controller acquires information about a number L of backhaul transceivers of a base station that communicates with the gateway; the controller to the gateway and the first The base station transmits information of a codebook set, where the codebook set includes: J codebooks, where J>L, the codebook is selected from the codebook set.
  • the codebook set is a codebook set corresponding to a first backhaul cluster, and the first backhaul cluster is associated with the gateway a set of backhaul transceivers of the base station in which the first backhaul transceiver performs backhaul transmission, the backhaul links of different backhaul clusters are spatially orthogonal; the first backhaul cluster includes a first backhaul transceiver of the first base station .
  • the acquiring, by the controller, information about the backhaul requirement of the first base station includes: acquiring, by the controller, the Information of a backhaul requirement of a first backhaul transceiver of a base station; the controller transmitting information of the codebook to the gateway and the first base station, including: the controller to the gateway and the Transmitting, by a base station, information of a codebook of a first backhaul transceiver of the first base station; information of a codebook of the first backhaul transceiver of the first base station is determined by the controller according to the first base station The codebook of the first backhaul transceiver of the first base station is selected from a codebook set corresponding to the first backhaul cluster, where the backhaul requirement of the first backhaul transceiver is determined.
  • the codebook is a non-orthogonal codebook.
  • the information of the codebook includes: a codebook sequence number or a codeword sequence number.
  • the information of the codebook is determined according to the backhaul requirement of the first base station, including: the code The information is determined according to the backhaul requirement of the first base station and the backhaul capacity of the first base station.
  • the method further includes: the controller acquiring information about the first backhaul cluster sent by the gateway.
  • the present patent application provides a backhaul transmission method for wireless communication, where a gateway acquires information of a codebook, and the information of the codebook is determined according to a backhaul requirement of a first base station; The codebook performs backhaul transmission with the first base station.
  • the gateway sends, to the controller, information about a number L of backhaul transceivers of a base station that communicates with the gateway; the gateway obtains from the controller The information of the codebook set, the codebook set including J codebooks, where J>L, the codebook is selected from the codebook set.
  • the codebook set is a codebook set corresponding to a first backhaul cluster, and the first backhaul cluster is associated with the gateway a set of backhaul transceivers of the base station in which the first backhaul transceiver performs backhaul transmission, the backhaul links of different backhaul clusters are spatially orthogonal; the first backhaul cluster includes a first backhaul transceiver of the first base station .
  • the codebook is a non-orthogonal codebook.
  • the information of the codebook includes: a codebook serial number or a codeword serial number.
  • the information of the codebook is determined according to the backhaul requirement of the first base station, including: the code The information is determined according to the backhaul requirement of the first base station and the backhaul capacity of the first base station.
  • the gateway by using the codebook, performing the backhaul transmission with the first base station, includes: The gateway maps data into modulation symbols according to the codebook, and the gateway sends the modulation symbols to the first base station.
  • the first base station performs the foregoing by using the codebook and the gateway Backhaul transmission, including: The gateway will receive modulation symbols from the first base station, and the gateway demaps the modulation symbols into data according to the codebook.
  • the present patent application provides a first base station, including: a backhaul transceiver of a first base station; a memory for storing instructions; a processor, and a backhaul transceiver of the memory and the first base station respectively Connected to execute the instructions to perform the step of: instructing the backhaul transceiver of the first base station to transmit information of a backhaul requirement of the first base station to a controller;
  • the backhaul transceiver of the base station acquires information of the codebook from the controller, the information of the codebook is determined according to the backhaul requirement of the first base station; and the codebook and the gateway are used by the backhaul transceiver of the first base station Perform a backhaul transmission.
  • the processor when executing the instruction, further performing the step of: acquiring, by the backhaul transceiver of the first base station, a codebook set from the controller Information; the codebook set includes J codebooks, where J>L, where L is the number of backhaul transceivers of the base station in communication with the gateway, the codebook being selected from the set of codebooks.
  • the codebook set is a codebook set corresponding to a first backhaul cluster
  • the first backhaul cluster is associated with the gateway a set of backhaul transceivers of the base station in which the first backhaul transceiver performs backhaul transmission
  • the backhaul links of different backhaul clusters are spatially orthogonal
  • the first backhaul cluster includes the first backhaul transceiver of the first base station .
  • the processor when executing the instruction, further performing the step of: indicating that the first backhaul transceiver of the first base station is Transmitting, by the controller, information about a backhaul requirement of the first backhaul transceiver of the first base station; acquiring, by the first backhaul transceiver of the first base station, a code of the first backhaul transceiver of the first base station.
  • the information of the first backhaul transceiver of the first base station is determined according to the backhaul requirement of the first backhaul transceiver of the first base station, and the first backhaul transceiver of the first base station
  • the codebook is selected from the codebook set corresponding to the first backhaul cluster.
  • the codebook is a non-orthogonal codebook.
  • the information of the codebook includes: a codebook sequence number or a codeword sequence number.
  • the information of the codebook is determined according to the backhaul requirement of the first base station, including: the code This information is based on The backhaul requirement of the first base station and the backhaul capacity of the first base station are determined.
  • the processor is further configured to map data into a modulation symbol according to the codebook, where the processing The processor also performs the step of instructing the backhaul transceiver of the first base station to transmit the modulation symbol to the gateway when executing the instruction.
  • the processor when executing the instruction, further performing the following steps: A backhaul transceiver of the first base station receives modulation symbols from the gateway, and the processor is further configured to demap the modulation symbols into data.
  • the present patent application provides a controller, including: a transceiver; a memory for storing instructions; and a processor connected to the memory and the transceiver, respectively, for executing the instructions to execute
  • the following steps are performed: acquiring, by the transceiver, information about a backhaul requirement of the first base station; and instructing the transceiver to send information of the codebook to the gateway to which the first base station belongs and the first base station;
  • the information of the codebook is determined by the processor according to the backhaul requirement, and the backhaul transmission is a transmission between the first base station and the gateway.
  • the controller acquires information about a number L of backhaul transceivers of a base station that communicates with the gateway; the controller to the gateway and the first The base station transmits information of a codebook set, where the codebook set includes: J codebooks, where J>L, the codebook is selected from the codebook set.
  • the codebook set is a codebook set corresponding to a first backhaul cluster, and the first backhaul cluster is associated with the gateway a set of backhaul transceivers of the base station in which the first backhaul transceiver performs backhaul transmission, the backhaul links of different backhaul clusters are spatially orthogonal; the first backhaul cluster includes a first backhaul transceiver of the first base station .
  • the processor when executing the instruction, further performing the step of: acquiring, by the transceiver, the first base station Information of a backhaul requirement of a backhaul transceiver; transmitting, by the transceiver, information of a codebook of a first backhaul transceiver of the first base station to the gateway and the first base station;
  • the information of the codebook of the first backhaul transceiver is determined by the controller according to the backhaul requirement of the first backhaul transceiver of the first base station, and the first backhaul transceiver of the first base station
  • the codebook is selected from the codebook set corresponding to the first backhaul cluster.
  • the codebook is a non-orthogonal codebook.
  • the information of the codebook includes: a codebook serial number or a codeword serial number.
  • the information of the codebook is determined by the processor according to the backhaul requirement of the first base station, including The information of the codebook is determined by the processor according to the backhaul requirement of the first base station and the backhaul capacity of the first base station.
  • the method further includes: acquiring, by the controller, the first backhaul cluster sent by the gateway Information.
  • the patent application provides a gateway, comprising: a backhaul transceiver of a gateway; a memory for storing instructions; and a processor respectively connected to the memory and the backhaul transceiver for performing the memory storage
  • the instruction when executing the instruction, performing the following steps: acquiring information of a codebook from a controller by a backhaul transceiver of the gateway, where the information of the codebook is determined according to a backhaul requirement of the first base station;
  • the backhaul transceiver of the gateway uses the codebook to perform backhaul transmission with the first base station.
  • the processor when executing the instruction, further performing the step of: instructing a backhaul transceiver of the gateway to send the controller to communicate with the gateway Information of the number L of backhaul transceivers of the base station; information of the codebook set is obtained from the controller by the backhaul transceiver, the codebook set includes J codebooks, where J>L, the codebook is Selected from the set of codebooks.
  • the codebook set is a codebook set corresponding to a first backhaul cluster; and the backhaul transceiver of the gateway includes a gateway a first backhaul transceiver; the first backhaul cluster is a set of backhaul transceivers of the base station that performs backhaul transmission with a first backhaul transceiver of the gateway, and backhaul links of different backhaul clusters are spatially orthogonal,
  • the first backhaul cluster includes a first backhaul transceiver of the first base station.
  • the processor when executing the instruction, further performing the step of: acquiring, by the backhaul transceiver of the gateway, the first Information of a codebook of the first backhaul transceiver of the base station; information of a codebook of the first backhaul transceiver of the first base station is based on a backhaul of the first backhaul transceiver of the first base station The codebook of the first backhaul transceiver of the first base station is selected from the codebook set corresponding to the first backhaul cluster.
  • the codebook is a non-orthogonal codebook.
  • the information of the codebook includes: a codebook sequence number or a codeword sequence number.
  • the information of the codebook is determined according to the backhaul requirement of the first base station, including: the code The information is determined according to the backhaul requirement of the first base station and the backhaul capacity of the first base station.
  • the processor is further configured to map data into a modulation symbol according to the codebook, where the processing The processor, when executing the instructions, further performs the step of instructing a backhaul transceiver of the gateway to transmit the modulation symbol to the first base station.
  • the processor when executing the instruction, further performing the following steps:
  • the backhaul transceiver of the gateway receives modulation symbols from the first base station, and the processor is further configured to demap the modulation symbols into data.
  • the embodiment of the invention provides a communication system, which comprises at least two of the controller, the first base station and the gateway described in the above aspects.
  • Embodiments of the present invention provide a computer storage medium for storing computer software instructions for use in the first base station or controller or gateway, including a program designed to perform the method of the above aspect.
  • different data can be transmitted on the same time-frequency resource by introducing a codebook in the backhaul transmission.
  • This can increase the capacity of the backhaul link.
  • the information of the codebook of the backhaul transmission is determined, which can adapt to the backhaul requirements of different base stations, thereby improving the backhaul capacity of the system.
  • FIG. 1 is a block diagram showing the architecture of a backhaul of a wireless communication system according to another embodiment of the present patent application.
  • FIG. 2 is a schematic diagram of a backhaul transmission method for wireless communication according to an embodiment of the present patent application.
  • FIG. 3 is a flow chart showing the processing of a transmitting end of a backhaul of a wireless communication system according to an embodiment of the present patent application.
  • FIG. 4 is a process flow of a receiving end of a backhaul of a wireless communication system according to an embodiment of the present patent application. Schematic diagram.
  • FIG. 5 is a schematic diagram of a backhaul transmission method for wireless communication according to another embodiment of the present patent application.
  • FIG. 6 is a schematic structural diagram of a wireless communication system according to another embodiment of the present patent application.
  • Figure 7 is a schematic diagram of codebook allocation in accordance with another embodiment of the present patent application.
  • FIG. 8 is a schematic diagram of a backhaul transmission method for wireless communication according to another embodiment of the present patent application.
  • FIG. 9 is a diagram showing the architecture of a wireless communication system including two backhaul clusters in accordance with another embodiment of the present patent application.
  • FIG. 10 is a schematic diagram of a method of determining a backhaul cluster in accordance with another embodiment of the present patent application.
  • FIG. 11 is a schematic diagram of a wireless backhaul control device in accordance with another embodiment of the present patent application.
  • Figure 12 is a schematic illustration of a controller in accordance with another embodiment of the present patent application.
  • FIG. 13 is a schematic illustration of a gateway in accordance with another embodiment of the present patent application.
  • FIG. 14 is a schematic diagram of a first base station according to another embodiment of the present patent application.
  • the base station can be a base station, a wireless access point (AP), or a transmission point or a relay node.
  • the wireless communication network may be a cellular mobile communication network, such as Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), etc., or a wireless local area network (WLAN) or a future network.
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • WLAN wireless local area network
  • a wireless communication system includes a gateway (GateWay, GW) 103 and a plurality of base stations 105.
  • the transmission between the gateway (GateWay, GW) 103 and the base station 105 is a backhaul transmission.
  • the wireless communication system may also include other network devices.
  • a controller may also be included. The controller may be disposed on the gateway 103 or on a certain base station 105 or other network device of the wireless communication system, such as a mobility management entity (MME).
  • MME mobility management entity
  • the backhaul transceiver is a transceiver that performs backhaul transmission.
  • the transceiver for performing backhaul transmission is the backhaul transceiver of the base station. It can be set up with the access transceiver or it can be set separately.
  • network Among the transceivers that are turned off, the transceiver used for backhaul transmission is the gateway's backhaul transceiver.
  • the link between the base station and the gateway is the backhaul link. If the base station and the gateway have multiple backhaul transceivers, the link between the backhaul transceiver of the base station and the backhaul transceiver of the gateway is the backhaul link.
  • the backhaul link is a wireless backhaul link.
  • Each base station 105 and the gateway 103 respectively use a wireless backhaul link for data transmission.
  • Backhaul link capacity refers to the data rate that the backhaul link can transmit.
  • the backhaul capacity of the base station is the sum of the data rates that can be transmitted by all backhaul links of the base station.
  • the backhaul capacity of the system is the sum of the transmittable data rates of all backhaul links in the system.
  • Time domain orthogonal transmission means that different wireless backhaul links occupy different time slot transmissions respectively
  • frequency domain orthogonal transmission means that different wireless backhaul links respectively occupy different spectrum subband transmissions.
  • the method of time domain orthogonality and frequency domain orthogonality wastes time domain and frequency domain resources, especially in an ultra-dense network, the wireless backhaul needs to transmit a large number of high-speed data services of a large number of terminals aggregated by the base station, which makes the wireless backhaul
  • the problem of becoming a transmission bottleneck has become more serious.
  • the patent application proposes a backhaul transmission method, controller, base station, gateway and network system for wireless communication to effectively enhance the backhaul capacity of the system.
  • FIG. 2 is a control method of backhaul transmission according to an embodiment of the present patent application. As shown in Figure 2, the method includes:
  • the first base station sends, to the controller, information about a backhaul requirement of the first base station.
  • the controller receives information of the backhaul demand.
  • the controller determines, according to a backhaul requirement of the first base station, information about a codebook transmitted by the backhaul of the first base station.
  • the controller sends the information of the codebook to the gateway to which the first base station belongs and the first base station.
  • the first base station and the gateway use the codebook to perform backhaul transmission.
  • the demand for backhaul transmission is the backhaul requirement.
  • the backhaul requirement may be embodied by at least one of a rate of backhaul, a delay of the backhaul, and a resource of the backhaul.
  • the backhaul requirement is the sum of the service requirements that the user served by the first base station needs to transmit over the backhaul.
  • the specific business requirement may be the sum of the backhaul rate requirements and/or the latency requirements of the service.
  • the backhaul requirement of the first base station can be updated by existing signaling, such as base station configuration. Send the information. It can also be sent by separate signaling.
  • the information of the codebook includes: a codebook serial number or a codeword serial number.
  • the codebook can be a non-orthogonal codebook. For example, a codebook of Sparse Code Multiple Access (SCMA), a codebook of Low Density Signature (LDS), or a non-orthogonal multiple access (NOMA) Codebook.
  • SCMA Sparse Code Multiple Access
  • LDS Low Density Signature
  • NOMA non-orthogonal multiple access
  • the use of non-orthogonal codebooks can further increase the backhaul capacity.
  • the number of codebook serial numbers or codeword serial numbers is positively correlated with the backhaul demand. According to the backhaul requirements of different base stations, more code base numbers or code word numbers can be allocated for base stations with large backhaul requirements, and less code base numbers or code word numbers are allocated for base stations with small backhaul requirements. For example, the codebook serial number or codeword serial number can be assigned according to the proportion of the backhaul demand.
  • the controller may further determine information of the codebook of the backhaul transmission according to the backhaul requirement of the first base station and the backhaul capacity of the first base station. Specifically, a plurality of codebook serial numbers or codeword serial numbers may be allocated to base stations with large backhaul requirements, but the allocated codebook serial number or codeword serial number may not exceed the backhaul capacity of the base station:
  • N c,i is the number of codebook sequence numbers or codeword numbers assigned to the i-th base station
  • N rb is the number of time-frequency resource blocks
  • M is the number of codewords in the codebook
  • C i is the ith base stations backhaul capacity, RB time-frequency resource block size, signal to noise ratio the SNR i of the i th base station.
  • the method may further include: the first base station transmitting information of the backhaul capacity of the first base station to the controller.
  • the gateway has acquired the information of the backhaul capacity of the first base station
  • the information of the backhaul capacity of the first base station may also be sent by the gateway to the controller.
  • the codebook information dynamically changes as the backhaul demand changes.
  • the first base station may send information of the backhaul requirement to the controller in a first time period.
  • the determination of the codebook and the transmission of the codebook are also performed in a first time period.
  • the information for transmitting the codebook to the gateway may be sent by internal communication, and the information for transmitting the codebook to the first base station may be sent through an external interface. If the controller is located on the first base station, the information for transmitting the codebook to the first base station may be sent by internal communication, and the information sent to the gateway and the codebook may be sent through an external interface. If the controller is neither located at the gateway nor located at the first base station, for example, located in a certain control network element, the information for transmitting the codebook to the first base station and the gateway is sent through an external interface.
  • the external interface can be an X2 interface or an S1 interface.
  • the identifier of the first base station may also be carried.
  • the identifier of the gateway may also be carried.
  • the information of the transmitted codebook may be performed by separate signaling or by resource status update signaling.
  • the first base station When performing uplink transmission, the first base station corresponds to the transmitting end, and the gateway corresponds to the receiving end.
  • the gateway When performing downlink transmission, the gateway corresponds to the transmitting end, and the first base station corresponds to the receiving end.
  • the first base station and the gateway may be located at the transmitting end and the receiving end, respectively.
  • Each modulation symbol corresponds to one RE in the resource block, and then a signal waveform is generated according to the modulation symbol.
  • the modulation symbol can be restored to the data block according to the information of the codebook used.
  • FIG. 3 is a flow chart showing the processing of a transmitting end of a backhaul of a wireless communication system according to an embodiment of the present patent application.
  • the SCMA codebook is taken as an example in FIG. It will be apparent to those skilled in the art that other forms of codebooks may also be employed.
  • the channel-coded data to be transmitted may be divided into data blocks of a certain size.
  • the SCMA encoder then encodes the data block using the codebook information and maps the data blocks into a set of modulation symbols. The modulation symbol is then mapped to the air interface resource.
  • a pilot signal can also be inserted during resource mapping for channel estimation by the receiving end for decoding.
  • the encoded data can also be subjected to operations such as Inverse Discrete Fourier Transform (IDFT) transformation.
  • IDFT Inverse Discrete Fourier Transform
  • the data processed through these processes is then sent out.
  • IDFT signal can also be inserted into a Cyclic Prefix (CP) before being sent.
  • CP Cyclic Prefix
  • the cyclic prefix makes the transmission channel and the data form a time domain cyclic convolution, that is, frequency domain multiplication, which is convenient for the receiving end frequency domain equalization.
  • the received encoded data may be first removed from the Cyclic Prefix (CP), then the Discrete Fourier Transform (DFT), and the resource demapping.
  • the SCMA decoder demaps the modulation symbols out of the data block.
  • the SCMA decoder can refer to the channel estimate when decoding.
  • FIG. 5 is a schematic diagram of a backhaul transmission method for wireless communication according to another embodiment of the present patent application. As shown in FIG. 5, the method includes:
  • the gateway sends, to the controller, information of the number L of backhaul transceivers of the base station in communication with the gateway.
  • the controller receives the number L of information.
  • the controller determines a codebook set, where the codebook set includes: J codebooks, where J>L.
  • the controller sends the information of the codebook set to the gateway and the first base station.
  • each codebook includes M codewords, and the length of each codeword Is K, where the number of non-zero elements is N, then
  • the controller may divide the backhaul time-frequency resource into N rb orthogonal time-frequency resource blocks (Resource Blocks, RBs), and each time-frequency resource block contains K resource elements (Resources, REs).
  • N rb is the number of time-frequency resource blocks
  • K is the length of the codeword in the codebook.
  • the information of the transmitted codebook set may be performed by separate signaling or by resource status update signaling.
  • the information of the codebook set when the information of the codebook set is sent in 503, the information of the codebook set and the information of the backhaul resource allocation manner may be simultaneously transmitted. In this way, the gateway and the first base station perform backhaul transmission more easily and conveniently.
  • the identifier of the first base station may also be carried.
  • the identifier of the gateway may also be carried. If a plurality of codebook sets have been stored on the first base station and the gateway, in 503, only the number of the codebook set determined in 502 needs to be transmitted.
  • the information of the codebook set is correspondingly semi-statically varying with the number of backhaul transceivers of the first base station in communication with the gateway.
  • the first base station may send information of the backhaul requirement to the controller for a second time period.
  • the second time period is greater than the first time period.
  • FIG. 6 shows the processing of a wireless network including two base stations 105.
  • Each base station 105 has only one backhaul transceiver.
  • the length of the codeword corresponds to the modulation order corresponding to the codebook.
  • a codebook corresponding to Quadrature Phase Shift Keying (QPSK) or 4th order modulation includes 4 code words.
  • QPSK Quadrature Phase Shift Keying
  • 4th order modulation includes 4 code words.
  • the backhaul requirement of the first base station BS1 is greater than the backhaul requirement of the first base station BS2.
  • the codebook The information is a codebook sequence number
  • the first base station BS1 can be allocated four codebooks in all six codebooks in the codebook set, such as a codebook with a codebook number of 1-4.
  • the two base stations BS2 are assigned two codebooks with codebook numbers of 5-6.
  • Each codebook has 4 different modulation symbol groups, each of which has a length of 4, corresponding to 4 resource units of each resource block. It can also be seen from FIG. 7 that each modulation symbol group has two symbols of zero, and the resource units of the same codebook have the same resource unit location.
  • a data block formed every 2 bits corresponds to one codeword in the codebook, and is mapped into a set of adjustment symbols, and 6 sets of modulation symbols are superimposed on the same resource block, so that the first base station BS1 can be in each
  • the RB transmits 8 bits, which respectively correspond to the code words of the 1 ⁇ 4 number. Also, the first base station BS2 can transmit 4 bits on each RB.
  • the codebook set includes 6 codebooks and 24 codewords.
  • the backhaul requirement of the first base station BS1 is greater than the backhaul requirement of the first base station BS2, and the first base station BS1 is allocated 16 codewords of all 24 codewords in the codeword set, such as codewords with codeword numbers of 1-16. .
  • the first base station BS2 is assigned eight code words having a codeword number of 17-24.
  • FIG. 8 is a schematic diagram of a backhaul transmission method for wireless communication according to another embodiment of the present patent application. As shown in Figure 8, the method includes:
  • the gateway determines the first backhaul cluster.
  • the first backhaul cluster is a collection of backhaul transceivers of the base station that performs backhaul transmission with the first backhaul transceiver of the gateway. If there are multiple backhaul transceivers on the gateway, there are multiple backhaul clusters accordingly.
  • the backhaul links between different backhaul clusters are spatially orthogonal. The backhaul cluster will be further elaborated below.
  • the gateway sends information about the first backhaul cluster to the controller.
  • the information of the first backhaul cluster includes a backhaul cluster ID and a backhaul transceiver ID of the base station.
  • the information of the first backhaul cluster may also include a base station ID.
  • the controller determines information about the corresponding codebook set for the first backhaul cluster. Similar to 502, when the number of backhaul transceivers of the base station in the first backhaul cluster is L, then J (J>L) codebooks are determined.
  • the controller sends the information of the codebook set to the first backhaul transceiver of the gateway and the backhaul transceiver of the base station in the first backhaul cluster.
  • the first backhaul transceiver of the gateway and the backhaul transceiver of the base station in the first backhaul cluster receive information of the codebook set. This step can refer to the introduction about 503.
  • the backhaul transceiver of each base station in the first backhaul cluster sends information about the backhaul requirement to the controller.
  • the controller receives information of the backhaul demand.
  • the controller determines, according to a backhaul requirement of the first backhaul transceiver of the first base station, information of the codebook for the first backhaul transceiver of the first base station.
  • the allocation of the codebook is positively correlated with the backhaul requirement. It is possible to allocate more codebook serial numbers or codeword serial numbers to the backhaul transceivers of the base station with large backhaul requirements, and allocate less codebook serial numbers or codeword serial numbers for the backhaul transceivers of the base station with less backhaul requirements.
  • the codebook serial number or codeword serial number can be assigned according to the proportion of the backhaul demand.
  • the controller sends the information of the codebook to the first backhaul transceiver of the gateway and the first backhaul transceiver of the first base station.
  • the first backhaul transceiver of the gateway and the first backhaul transceiver of the first base station receive the information of the codebook accordingly.
  • the first backhaul transceiver of the gateway and the first backhaul transceiver of the first base station use the codebook for backhaul transmission.
  • the base station can proportionally allocate backhaul requirements to the various backhaul transceivers of the base station based on the total backhaul demand and the capacity of each backhaul transceiver.
  • An implementation is as follows:
  • Req i is the backhaul requirement allocated by the base station to the i th backhaul transceiver
  • Req is the total backhaul requirement of the base station
  • C i is the backhaul capacity of the i th backhaul transceiver of the base station. The sum of the capacities of all backhaul transceivers for the base station.
  • the controller may further determine the codebook of the backhaul transmission according to the backhaul requirement of the first backhaul transceiver of the first base station and the backhaul capacity of the first backhaul transceiver of the first base station. information. Specifically, a plurality of codebook serial numbers or codeword serial numbers may be allocated to a backhaul transceiver of a base station with a large backhaul requirement, but the allocated codebook or codeword can transmit at a rate that cannot exceed the backhaul capacity of the backhaul transceiver of the base station. :
  • N c,i is the number of codebook sequence numbers or codeword sequence numbers assigned to the i-th backhaul transceiver of the base station
  • N rb is the number of time-frequency resource blocks
  • M is the number of codewords in the codebook
  • C i is the i-th backhaul capacity of the backhaul transceiver station
  • RB time-frequency resource block size signal to noise ratio the SNR of the i-th base station i.
  • the method may further include: the first base station transmitting, to the controller, information of a backhaul capacity of the first backhaul transceiver of the first base station.
  • the gateway has acquired the information of the backhaul capacity of the first backhaul transceiver of the first base station
  • the information of the backhaul capacity of the first backhaul transceiver of the first base station may also be sent by the gateway to the controller.
  • a backhaul transceiver is coupled to an antenna unit. If there are multiple backhaul on one gateway The transceiver is different from the plurality of antenna units coupled thereto. If there are multiple backhaul transceivers on a base station, the multiple antenna elements coupled thereto are different.
  • the individual antenna elements of the gateway are spatially orthogonal.
  • the individual antenna elements of the base station are spatially orthogonal. Thus, the directionality of the backhaul link between the gateway's backhaul transceiver and the base station's backhaul transceiver is also different and spatially orthogonal.
  • the orthogonality of the space can be utilized.
  • the backhaul cluster changes when the number of backhaul transceivers of the base station in the backhaul cluster changes. Accordingly, the information of the codebook set also changes accordingly. For a particular base station backhaul transceiver in the backhaul cluster, when the backhaul demand changes, the codebook information changes accordingly. When a change occurs, the controller needs to send the information of the changed codebook set and the information of the codebook.
  • the multiplexing of the codebook sets between the various backhaul clusters can be realized, and the backhaul capacity of the ultra-dense network is further enhanced.
  • a gateway's backhaul transceiver can correspond to a backhaul cluster.
  • the gateway 103 is shown in Figure 9 as having two backhaul transceivers, a first backhaul transceiver 103a and a second backhaul transceiver 103c, respectively.
  • the gateway 103 can correspond to two backhaul clusters, namely the backhaul cluster 1 and the backhaul cluster 2.
  • FIG. 10 is a schematic diagram of a method of dividing a backhaul cluster. As shown in FIG. 10, the method includes the following steps:
  • the first base station sends, to the gateway, a reference signal of each backhaul transceiver of the first base station to each backhaul transceiver of the gateway.
  • the gateway receives the reference signal.
  • the gateway also receives reference signals transmitted by the backhaul transceivers of other base stations around it.
  • the reference signal can be a pilot signal or other reference signal.
  • the gateway measures the strength of the signal between each of the backhaul transceivers of the gateway and each of the backhaul transceivers of the surrounding base stations.
  • the backhaul transceiver of the base station whose signal strength is greater than the preset value T is classified into a backhaul cluster corresponding to the backhaul transceiver of the gateway.
  • the preset value T can be set in advance according to the actual situation. For example, it can be set as the sensitivity of the gateway's backhaul transceiver.
  • the signal strength of the backhaul transceiver of a base station to the gateway and the other backhaul transceivers of the gateway are greater than a preset value T, the signal strength can be compared, and the backhaul transceiver of the base station is classified into The backhaul cluster corresponding to the backhaul transceiver of a gateway with the highest signal strength.
  • the signal strength A1 of the first backhaul transceiver 103a of the gateway to the first backhaul transceiver of a certain base station is greater than a preset value T.
  • the signal strength A2 of the second backhaul transceiver 103b of the gateway to the first backhaul transceiver of the base station is greater than a preset value T. If A2 is greater than A1, the first backhaul transceiver of the base station is classified Go to the second backhaul cluster 2.
  • the first backhaul transceiver of the base station is classified into the first backhaul cluster 1 or the second backhaul cluster 2 corresponding to the first backhaul transceiver 103a of the gateway corresponding to A1 or A2.
  • multiple backhaul transceivers on one base station can be grouped into one backhaul cluster or grouped into multiple different backhaul clusters. This is primarily determined by the signal strength between the backhaul transceiver on the base station and the gateway's backhaul transceiver.
  • FIG. 11 is a schematic diagram of interaction of a backhaul transmission method for wireless communication according to another embodiment of the present patent application. As shown in FIG. 11, the method includes:
  • 1101 is basically the same as 1001.
  • 1102 is basically the same as 1002.
  • the gateway sends the strength of the signal between the first backhaul transceiver of the gateway and each of the backhaul transceivers of the surrounding base station to the controller.
  • the controller determines a first backhaul cluster.
  • the method for determining the backhaul cluster can be referred to above.
  • each network element includes a corresponding hardware structure and/or software module for executing each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in conjunction with the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • This patent application further provides an apparatus embodiment for implementing the steps and methods of the above method embodiments.
  • FIG. 12 shows a possible structural diagram of the controller involved in the above embodiment.
  • the controller includes: a transceiver 1201; a memory 1202 for storing instructions; and a processor 1203 connected to the memory 1202 and the transceiver 1201, respectively, for executing the instructions.
  • the processor performs the above steps of receiving, transmitting, and acquiring the controller in the foregoing embodiment by using the transceiver 1201 when the processor executes the instruction.
  • the processor 1203 also performs control, processing, and the like when executing the instructions.
  • the processor 1202 when executing the instruction, performs the steps of: acquiring, by the transceiver 1201, information about a backhaul requirement of the first base station; indicating to the gateway to which the first base station belongs and the gateway
  • the first base station transmits information of the codebook; the information of the codebook is determined by the processor 1203 according to the backhaul requirement
  • the backhaul transmission is a transmission between the first base station and the gateway.
  • the codebook set is a codebook set corresponding to the first backhaul cluster;
  • the first backhaul cluster is a set of the backhaul transceivers 1201 of the base station that performs backhaul transmission with the first backhaul transceiver 1201 of the gateway, different
  • the backhaul links of the backhaul cluster are spatially orthogonal;
  • the first backhaul cluster includes a first backhaul transceiver 1201 of the first base station.
  • FIG. 13 shows a possible structural diagram of a gateway involved in the above embodiment.
  • the gateway includes a first backhaul transceiver 1301; a memory 1302 for storing instructions; and a processor 1303 connected to the memory 1302 and the first backhaul transceiver 1301 for executing the instructions.
  • the processor 1302 performs the above steps of receiving, transmitting, and acquiring the controller in the foregoing embodiment by using the first backhaul transceiver 1301 when the instruction is executed.
  • the processor 1303 also performs control, processing, and the like when executing the instructions.
  • the processor 1303 when executing the instruction, performs the following steps: acquiring information of the codebook from the controller by the backhaul transceiver 1301 of the gateway, where the information of the codebook is determined according to the backhaul requirement of the first base station.
  • the backhaul transceiver 1301 through the gateway uses the codebook to perform backhaul transmission with the first base station.
  • the backhaul transceiver obtains information of a codebook set from the controller, the codebook set includes J codebooks, where J>L, the codebook is selected from the codebook set.
  • the codebook set is a codebook set corresponding to a first backhaul cluster; the backhaul transceiver of the gateway includes a first backhaul transceiver of a gateway; and the first backhaul cluster is sent and received with a first backhaul of the gateway
  • the set of backhaul transceivers of the base station for backhaul transmission, the backhaul links of different backhaul clusters are spatially orthogonal, the first back The cluster includes a first backhaul transceiver of the first base station.
  • the information of the codebook of a backhaul transceiver is determined according to the backhaul requirement of the first backhaul transceiver of the first base station, and the codebook of the first backhaul transceiver of the first base station is from the first backhaul cluster Selected in the corresponding codebook set.
  • FIG. 14 is a schematic diagram showing a possible structure of the first base station involved in the foregoing embodiment.
  • the first base station includes a first backhaul transceiver 1401; a memory 1402 for storing instructions; and a processor 1403 connected to the memory 1402 and the first backhaul transceiver 1401, respectively, for executing the instructions.
  • the processor 1402 performs the above steps of receiving, transmitting, and acquiring the controller in the foregoing embodiment by using the first backhaul transceiver 1401 when the instruction is executed.
  • the processor 1403 also performs control, processing, and the like when executing the instructions.
  • the processor 1403 when executing the instruction, performing the following steps: instructing the backhaul transceiver 1401 of the first base station to send information about the backhaul requirement of the first base station to the controller;
  • the transceiver 1401 obtains information of the codebook from the controller, where the information of the codebook is determined according to the backhaul requirement of the first base station; and the backhaul transceiver 1401 of the first base station uses the codebook and the gateway to perform Backhaul transmission.
  • the processor further performs the following steps: obtaining, by the backhaul transceiver 1401 of the first base station, information of a codebook set from the controller by using the instruction; the codebook set includes J codebooks, where J>L, where L is the number of backhaul transceivers of the base station in communication with the gateway, the codebook being selected from the set of codebooks.
  • the codebook set is a codebook set corresponding to a first backhaul cluster; the first backhaul cluster is a set of backhaul transceivers of the base station that performs backhaul transmission with a first backhaul transceiver of the gateway, and different backhaul clusters
  • the backhaul links are spatially orthogonal, and the first backhaul cluster includes a first backhaul transceiver of the first base station.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the structure is only a logical function division.
  • there may be another division manner for example, multiple components may be combined or may be integrated into another.
  • a system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present patent application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the network entity names in all embodiments of the present patent application may be extended to names having the same or similar functions.
  • the term "article of manufacture” as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media.
  • the computer readable medium may include, but is not limited to, a magnetic storage device (for example, a hard disk, a floppy disk, or a magnetic tape), and an optical disk (for example, a CD (Compact Disk), a DVD (Digital Versatile Disk). Etc.), smart cards and flash memory devices (eg, EPROM (Erasable Programmable Read-Only Memory), cards, sticks or key drivers, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.
  • the function is implemented in the form of a software functional unit and sold or used as a stand-alone product, Stored in a computer readable storage medium.
  • a computer device which may be a personal computer, server, or network device, etc.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like.

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Abstract

本专利申请公开了一种无线通信的回程传输方法、控制器、基站、网关。该方法包括：第一基站向控制器发送所述第一基站的回程需求的信息；所述第一基站从所述控制器获取码本的信息，所述码本的信息是根据所述第一基站的回程需求确定的；所述第一基站使用所述码本与网关进行回程传输。根据基站的回程需求，确定回程传输的码本的信息，可以适应不同基站的回程需求，从而提升系统的回程容量。

Description

一种无线通信的回程传输方法、控制器、基站、网关
本申请要求于2016年1月16日提交中国专利局、申请号为201610029015.X、发明名称为“一种无线通信的回程传输方法、控制器、基站、网关”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本专利申请实施例涉及通信领域，更具体地，涉及一种无线通信的回程传输方法、控制器、基站和网关。
背景技术
为提高网络容量，无线网络的接入点小型化和部署密集化是无线网络的发展趋势，超密集网络(Ultra-dense network，UDN)基于尽可能短距离的终端接入，提升终端吞吐量和系统的区域吞吐量，是下一代无线网络的核心技术之一。
在基站密集部署的超密集网络中，基于成本等因素的限制，并非每个基站都有有线回程，即并非每个基站都与网关之间是有线传输。这样，超密集网络需要使用无线回程技术。但是目前尚未有合适的解决方案。
发明内容
本专利申请提供一种合适的无线通信的回程传输方法、控制器、基站、网关和网络系统。
第一方面，本专利申请提供了一种无线通信的回程传输方法，包括：第一基站向控制器发送所述第一基站的回程需求的信息；所述第一基站从所述控制器获取码本的信息，所述码本的信息是根据所述第一基站的回程需求确定的；所述第一基站使用所述码本与网关进行回程传输。
在本专利申请中，通过在回程传输中引入码本，从而可以在相同的时频资源上传输不同的数据。这可以提高回程链路的容量。根据基站的回程需求，确定回程传输的码本的信息，可以适应不同基站的回程需求，从而提升系统的回程容量。
结合第一方面，在第一种可能的实现方式中，所述第一基站从所述控制器获取码 本集合的信息；所述码本集合包括J个码本，其中J>L，其中L为与所述网关通信的基站的回程收发器的数目，所述码本是从所述码本集合中选取的。本专利申请中，根据具体的通信需求，确定码本集合，可以避免码资源的浪费。
结合第一方面的一种可能的实现方式，在第二种可能的实现方式中，所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回程簇包含所述第一基站的第一回程收发器。本专利申请还通过划分回程簇，充分利用空间的正交性，为码复用提供可能。进一步提升了系统的回程容量。
结合第一方面的二种可能的实现方式，在第三种可能的实现方式中，所述第一基站向所述控制器发送所述第一基站的所述回程需求的信息，包括：所述第一基站向所述控制器发送所述第一基站的第一回程收发器的回程需求的信息；所述第一基站从所述控制器获取所述码本的信息，包括：所述第一基站从所述控制器获取所述第一基站的所述第一回程收发器的码本的信息；所述第一基站的所述第一回程收发器的码本的信息是根据所述第一基站的所述第一回程收发器的回程需求确定的，所述第一基站的所述第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
结合第一方面的以上任一种可能的实现方式，在第四种可能的实现方式中，所述码本为非正交的码本。本专利申请通过使用非正交的码本可以进一步提升系统的回程容量。
结合第一方面的以上任一种可能的实现方式，在第五种可能的实现方式中，所述码本的信息包括：码本序号或码字序号。
结合第一方面或第一方面的以上任一种可能的实现方式，在第六种可能的实现方式中，所述码本的信息是根据所述第一基站的所述回程需求确定的，包括：所述码本的信息根据所述第一基站的所述回程需求和所述第一基站的回程容量确定的。
结合第一方面或第一方面的以上任一种可能的实现方式，在第七种可能的实现方式中，所述第一基站使用所述码本与所述网关进行所述回程传输，包括：所述第一基站根据所述码本将数据映射成调制符号，所述第一基站将所述调制符号发送给所述网关。
结合第一方面或第一方面的以上第一至第六任一种可能的实现方式，在第八种可能的实现方式中，所述第一基站使用所述码本与所述网关进行所述回程传输，包括： 所述第一基站从所述网关接收调制符号，所述第一基站根据所述码本将所述调制符号解映射成数据。
第二方面，本专利申请提供了一种无线通信的回程传输方法，包括：控制器获取第一基站的回程需求的信息；所述控制器向所述第一基站所属的网关和所述第一基站发送码本的信息；所述码本的信息是所述控制器根据所述回程需求确定的，所述回程传输是所述第一基站与所述网关之间的传输。
结合第二方面，在第一种可能的实现方式中，所述控制器获取与所述网关通信的基站的回程收发器的数目L的信息；所述控制器向所述网关和所述第一基站发送码本集合的信息，所述码本集合包括：J个码本，其中J>L，所述码本是从所述码本集合中选取的。
结合第二方面的一种可能的实现方式，在第二种可能的实现方式中，所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的；所述第一回程簇包含所述第一基站的第一回程收发器。
结合第二方面的二种可能的实现方式，在第三种可能的实现方式中，所述控制器获取所述第一基站的所述回程需求的信息，包括：所述控制器获取所述第一基站的第一回程收发器的回程需求的信息；所述控制器向所述网关和所述第一基站发送所述码本的信息，包括：所述控制器向所述网关和所述第一基站发送所述第一基站的第一回程收发器的码本的信息；所述第一基站的所述第一回程收发器的码本的信息是所述控制器根据所述第一基站的所述第一回程收发器的回程需求确定的，所述第一基站的所述第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
结合第二方面的以上任一种可能的实现方式，在第四种可能的实现方式中，所述码本为非正交的码本。
结合第二方面的以上任一种可能的实现方式，在第五种可能的实现方式中，所述码本的信息包括：码本序号或码字序号。
结合第二方面的以上任一种可能的实现方式，在第六种可能的实现方式中，所述码本的信息是根据所述第一基站的所述回程需求确定的，包括：所述码本的信息根据所述第一基站的所述回程需求和所述第一基站的回程容量确定的。
结合第二方面的第二至第六任一种可能的实现方式，在第七种可能的实现方式中， 所述方法还包括：所述控制器获取所述网关发送的所述第一回程簇的信息。
第三方面，本专利申请提供了一种无线通信的回程传输方法，网关从控制器获取码本的信息，所述码本的信息是根据第一基站的回程需求确定的；所述网关使用所述码本与所述第一基站进行回程传输。
结合第三方面，在第一种可能的实现方式中，所述网关向所述控制器发送与所述网关通信的基站的回程收发器的数目L的信息；所述网关从所述控制器获取码本集合的信息，所述码本集合包括J个码本，其中J>L，所述码本是从所述码本集合中选取的。
结合第三方面的一种可能的实现方式，在第二种可能的实现方式中，所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的；所述第一回程簇包含所述第一基站的第一回程收发器。
结合第三方面的二种可能的实现方式，在第三种可能的实现方式中，所述网关从所述控制器获取所述码本的信息，包括：所述网关从所述控制器获取所述第一基站的第一回程收发器的所述码本的信息；所述第一基站的所述第一回程收发器的码本的信息是根据所述第一基站的所述第一回程收发器的回程需求确定的，所述第一基站的所述第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
结合第三方面的以上任一种可能的实现方式，在第四种可能的实现方式中，所述码本为非正交的码本。
结合第三方面的以上任一种可能的实现方式，在第五种可能的实现方式中，所述码本的信息包括：码本序号或码字序号。
结合第三方面的以上任一种可能的实现方式，在第六种可能的实现方式中，所述码本的信息是根据所述第一基站的所述回程需求确定的，包括：所述码本的信息根据所述第一基站的所述回程需求和所述第一基站的回程容量确定的。
结合第三方面或第三方面的以上任一种可能的实现方式，在第七种可能的实现方式中，所述网关使用所述码本与所述第一基站进行所述回程传输，包括：所述网关根据所述码本将数据映射成调制符号，所述网关将所述调制符号发送给所述第一基站。
结合第三方面或第三方面的以上第一至第六任一种可能的实现方式，在第八种可能的实现方式中，所述第一基站使用所述码本与所述网关进行所述回程传输，包括： 所述网关从所述第一基站将接收调制符号，所述网关根据所述码本将所述调制符号解映射成数据。
第四方面，本专利申请提供了一种第一基站，包括：第一基站的回程收发器；存储器，用于存储指令；处理器，与所述存储器和所述第一基站的回程收发器分别相连，用于执行所述指令，以在执行所述指令时执行如下步骤：指示所述第一基站的回程收发器向控制器发送所述第一基站的回程需求的信息；通过所述第一基站的回程收发器从控制器获取码本的信息，所述码本的信息是根据所述第一基站的回程需求确定的；通过所述第一基站的回程收发器使用所述码本与网关进行回程传输。
结合第四方面，在第一种可能的实现方式中，所述处理器在执行所述指令时还执行如下步骤：通过所述第一基站的回程收发器从所述控制器获取码本集合的信息；所述码本集合包括J个码本，其中J>L，其中L为与所述网关通信的基站的回程收发器的数目，所述码本是从所述码本集合中选取的。
结合第四方面的一种可能的实现方式，在第二种可能的实现方式中，所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回程簇包含所述第一基站的第一回程收发器。
结合第四方面的二种可能的实现方式，在第三种可能的实现方式中，所述处理器在执行所述指令时还执行如下步骤：指示所述第一基站的第一回程收发器向所述控制器发送所述第一基站的第一回程收发器的回程需求的信息；通过所述第一基站的第一回程收发器获取所述第一基站的所述第一回程收发器的码本的信息；所述第一基站的第一回程收发器的码本的信息是根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
结合第四方面的以上任一种可能的实现方式，在第四种可能的实现方式中，所述码本为非正交的码本。
结合第四方面的以上任一种可能的实现方式，在第五种可能的实现方式中，所述码本的信息包括：码本序号或码字序号。
结合第四方面的以上任一种可能的实现方式，在第六种可能的实现方式中，所述码本的信息是根据所述第一基站的所述回程需求确定的，包括：所述码本的信息根据 所述第一基站的所述回程需求和所述第一基站的回程容量确定的。
结合第四方面或第四方面的以上任一种可能的实现方式，在第七种可能的实现方式中，所述处理器还用于根据所述码本将数据映射成调制符号，所述处理器在执行所述指令时还执行如下步骤：指示所述第一基站的回程收发器将所述调制符号发送给所述网关。
结合第四方面或第四方面的以上第一至第六任一种可能的实现方式，在第八种可能的实现方式中，所述处理器在执行所述指令时还执行如下步骤：通过所述第一基站的回程收发器从所述网关接收调制符号，所述处理器还用于将所述调制符号解映射成数据。
第五方面，本专利申请提供了一种控制器，包括：收发器；存储器，用于存储指令；处理器，与所述存储器和收发器分别相连，用于执行所述指令，以在执行所述指令时执行如下步骤：通过所述收发器获取第一基站的回程需求的信息；指示所述收发器向所述第一基站所属的网关和所述第一基站发送码本的信息；所述码本的信息是所述处理器根据所述回程需求确定的，所述回程传输是所述第一基站与所述网关之间的传输。
结合第五方面，在第一种可能的实现方式中，所述控制器获取与所述网关通信的基站的回程收发器的数目L的信息；所述控制器向所述网关和所述第一基站发送码本集合的信息，所述码本集合包括：J个码本，其中J>L，所述码本是从所述码本集合中选取的。
结合第五方面的一种可能的实现方式，在第二种可能的实现方式中，所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的；所述第一回程簇包含所述第一基站的第一回程收发器。
结合第五方面的二种可能的实现方式，在第三种可能的实现方式中，所述处理器在执行所述指令时还执行如下步骤：通过所述收发器获取所述第一基站的第一回程收发器的回程需求的信息；通过所述收发器向所述网关和所述第一基站发送所述第一基站的第一回程收发器的码本的信息；所述第一基站的所述第一回程收发器的码本的信息是所述控制器根据所述第一基站的所述第一回程收发器的回程需求确定的，所述第一基站的所述第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
结合第五方面的以上任一种可能的实现方式，在第四种可能的实现方式中，所述码本为非正交的码本。
结合第五方面的以上任一种可能的实现方式，在第五种可能的实现方式中，所述码本的信息包括：码本序号或码字序号。
结合第五方面的以上任一种可能的实现方式，在第六种可能的实现方式中，所述码本的信息是所述处理器根据所述第一基站的所述回程需求确定的，包括：所述码本的信息是所述处理器根据所述第一基站的所述回程需求和所述第一基站的回程容量确定的。
结合第五方面的第二至第六任一种可能的实现方式，在第七种可能的实现方式中，所述方法还包括：所述控制器获取所述网关发送的所述第一回程簇的信息。
第六方面，本专利申请提供了一种网关，包括：网关的回程收发器；存储器，用于存储指令；处理器，与所述存储器和回程收发器分别相连，用于执行所述存储器存储的所述指令，以在执行所述指令时执行如下步骤：通过所述网关的回程收发器从控制器获取码本的信息，所述码本的信息是根据第一基站的回程需求确定的；通过所述网关的回程收发器使用所述码本与所述第一基站进行回程传输。
结合第六方面，在第一种可能的实现方式中，所述处理器在执行所述指令时还执行如下步骤：指示所述网关的回程收发器向所述控制器发送与所述网关通信的基站的回程收发器的数目L的信息；通过所述回程收发器从所述控制器获取码本集合的信息，所述码本集合包括J个码本，其中J>L，所述码本是从所述码本集合中选取的。
结合第六方面的一种可能的实现方式，在第二种可能的实现方式中，所述码本集合是第一回程簇对应的码本集合；所述网关的所述回程收发器包括网关的第一回程收发器；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回程簇包含所述第一基站的第一回程收发器。
结合第六方面的二种可能的实现方式，在第三种可能的实现方式中，所述处理器在执行所述指令时还执行如下步骤：通过所述网关的回程收发器获取所述第一基站的所述第一回程收发器的码本的信息；所述第一基站的所述第一回程收发器的码本的信息是根据所述第一基站的所述第一回程收发器的回程需求确定的，所述第一基站的所述第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
结合第六方面的以上任一种可能的实现方式，在第四种可能的实现方式中，所述码本为非正交的码本。
结合第六方面的以上任一种可能的实现方式，在第五种可能的实现方式中，所述码本的信息包括：码本序号或码字序号。
结合第六方面的以上任一种可能的实现方式，在第六种可能的实现方式中，所述码本的信息是根据所述第一基站的所述回程需求确定的，包括：所述码本的信息根据所述第一基站的所述回程需求和所述第一基站的回程容量确定的。
结合第六方面或第六方面的以上任一种可能的实现方式，在第七种可能的实现方式中，所述处理器还用于根据所述码本将数据映射成调制符号，所述处理器在执行所述指令时还执行如下步骤：指示所述网关的回程收发器将所述调制符号发送给所述第一基站。
结合第六方面或第六方面的以上第一至第六任一种可能的实现方式，在第八种可能的实现方式中，所述处理器在执行所述指令时还执行如下步骤：通过所述网关的回程收发器从所述第一基站接收调制符号，所述处理器还用于将所述调制符号解映射成数据。
本发明实施例提供了一种通信系统，该系统包括上述方面所述的控制器、第一基站和网关中的至少两者。
本发明实施例提供了一种计算机存储介质，用于储存为上述第一基站或控制器或网关所用的计算机软件指令，其包含用于执行上述方面的方法所设计的程序。
在本专利申请中，通过在回程传输中引入码本，从而可以在相同的时频资源上传输不同的数据。这可以提高回程链路的容量。根据基站的回程需求，确定回程传输的码本的信息，可以适应不同基站的回程需求，从而提升系统的回程容量。
附图说明
图1是根据本专利申请另一个实施例，一种无线通信系统的回程的架构示意图。
图2是根据本专利申请一个实施例，一种无线通信的回程传输方法的示意图。
图3是根据本专利申请一个实施例，一种无线通信系统的回程的发送端的处理流程示意图。
图4是根据本专利申请一个实施例，一种无线通信系统的回程的接收端的处理流 程示意图。
图5是根据本专利申请另一个实施例，一种无线通信的回程传输方法的示意图。
图6是根据本专利申请另一个实施例，一种无线通信系统的架构示意图。
图7是根据本专利申请另一个实施例，进行码本分配的示意图。
图8是根据本专利申请另一个实施例，一种无线通信的回程传输方法的示意图。
图9是根据本专利申请另一个实施例，示出了包括两个回程簇的无线通信系统的架构。
图10是根据本专利申请另一个实施例，确定回程簇的方法的示意图。
图11是根据本专利申请另一个实施例，一种无线回程控制设备的示意图。
图12是根据本专利申请另一个实施例，一种控制器的示意图。
图13是根据本专利申请另一个实施例，一种网关的示意图。
图14是根据本专利申请另一个实施例，一种第一基站的示意图。
具体实施方式
现在参照附图描述多个实施例，其中用相同的附图标记指示本文中的相同元件。在下面的描述中，为便于解释，给出了大量具体细节，以便提供对一个或多个实施例的全面理解。然而，很明显，也可以不用这些具体细节来实现实施例。在其它例子中，以方框图形式示出公知结构和设备，以便于描述一个或多个实施例。
基站可以为基站台、无线接入点(Access Point，AP)或传输点或中继节点等。无线通信网络可以为蜂窝移动通信网络，如宽带码分多址(Wideband Code Division Multiple Access，WCDMA),长期演进(Long Term Evolution，LTE)等，也可以无线局域网WLAN或未来的网络等。
如图1所示，一种无线通信系统，包括网关(GateWay，GW)103和多个基站105。网关(GateWay，GW)103和基站105之间的传输即为回程传输。该无线通信系统还可能包括其他网络设备。在该无线通信系统中，还可以包括控制器。控制器可以设置在网关103上或某个基站105上或该无线通信系统的其他网络设备上，如移动性管理实体(mobility management entity,MME)。
回程收发器是进行回程传输的收发器。基站的收发器中，用于进行回程传输的收发器即为基站的回程收发器。其可以与接入收发器设置在一起，也可以单独设置。网 关的收发器中，用于进行回程传输的收发器即为网关的回程收发器。基站与网关之间进行通信的链路即为回程链路。如果基站与网关有多个回程收发器，则基站的回程收发器与网关的回程收发器之间进行通信的链路即为回程链路。在本专利申请中，该回程链路是无线回程链路。各个基站105与网关103之间分别使用无线回程链路进行数据传输。回程链路容量指该回程链路可传输的数据速率。基站的回程容量是基站的所有回程链路可传输的数据速率的总和。系统的回程容量是系统中所有回程链路的可传输的数据速率的总和。
使用无线回程传输需要占用无线频谱资源。由于无线频谱资源日益稀缺，无线回程链路之间需要共享频带。无线回程链路之间也存在干扰，特别是在超密集网络环境下。一个可行的解决方法是采用时域正交传输或频域正交传输。时域正交传输是指不同无线回程链路分别占用不同的时隙传输，频域正交传输是指不同无线回程链路分别占用不同的频谱子带传输。
然而，时域正交和频域正交的方法浪费了时域和频域资源，特别是在超密集网络下，无线回程需要传输大量基站聚合的大量终端的高数据速率业务，这使得无线回程成为传输瓶颈的问题变得更加严重。
本专利申请提出了一种无线通信的回程传输方法、控制器、基站、网关和网络系统，以有效增强系统的回程的容量。
图2是根据本专利申请一个实施例，一种回程传输的控制方法。如图2所示，该方法包括：
201、第一基站向控制器发送第一基站的回程需求的信息。控制器接收该回程需求的信息。
202、控制器根据第一基站的回程需求，确定第一基站的回程传输的码本的信息。
203、控制器向第一基站所属的网关和第一基站分别发送码本的信息。
204、第一基站和网关使用该码本进行回程传输。
用户会请求业务，不同业务对应不同的需求。不同需求的业务需要通过不同回程传输来满足。回程传输的需求即回程需求。回程需求可以回程的速率、回程的时延和回程的资源中的至少一种以体现。在201中，回程需求为第一基站所服务的用户需要通过回程传输的业务需求的总和。具体的业务需求可以是该业务的回程速率要求和/或时延要求的总和。第一基站的回程需求，可以通过现有的信令，如基站配置更新消 息进行发送。也可以通过单独的信令进行发送。
在202中，码本的信息包括：码本序号或码字序号。码本可以为非正交的码本。例如，稀疏码多址接入(Sparse Code Multiple Access，SCMA)的码本、低密度签名(Low Density Signature,LDS)的码本或非正交多址接入(Non-orthogonal Multiple Access，NOMA)的码本。使用非正交的码本可以进一步提升回程容量。
在202中，码本序号或码字序号的数量与回程需求正相关。根据不同基站的回程需求，可以为回程需求大的基站分配多一些码本序号或码字序号，为回程需求小的基站分配少一些码本序号或码字序号。例如，可以根据回程需求比例分配码本序号或码字序号。
可选地，为了增加分配码本的合理性，控制器还可以根据第一基站的回程需求和第一基站的回程容量确定回程传输的码本的信息。具体地，可以为回程需求大的基站分配多一些码本序号或码字序号，但所分配的码本序号或码字序号所能传输的速率不能超过该基站的回程容量：
Nc,iNrblog2M≤Ci＝Nrb·RB·log2(1+SNRi)
其中，Nc,i为分配给第i个基站的码本序号或码字序号的数目，Nrb是时频资源块的数目，M为码本中的码字的数量，Ci为第i个基站的回程容量，RB为时频资源块的大小，SNRi第i个基站的信噪比。
相应地，该方法还可以包括：第一基站向控制器发送第一基站的回程容量的信息。在网关已获取第一基站的回程容量的信息的情况下，也可以由网关向控制器发送第一基站的回程容量的信息。
码本的信息是随着回程需求变化而相应动态变化的。在201中，第一基站可以第一时间周期向控制器发送回程需求的信息。那在202和203中，码本的确定和发送码本也相应以第一时间周期进行。
在203中，如果控制器位于网关上，其中的向网关发送码本的信息可以是通过内部通信进行发送，而向第一基站发送码本的信息可以是通过外部接口进行发送。如果控制器位于第一基站上，其中的向该第一基站发送码本的信息可以是通过内部通信进行发送，而向网关及发送码本的信息可以是通过外部接口进行发送。如果控制器既不位于网关也不位于第一基站，例如位于某个控制网元，其中的向该第一基站和网关发送该码本的信息是通过外部接口进行发送。外部接口可以是X2接口或S1接口。
在203中，在向第一基站发送码本的信息时，还可以携带第一基站的标识。在向网关发送码本的信息时，还可以携带网关的标识。发送码本的信息可以通过单独的信令进行，也可以通过资源状态更新(resource status update)信令进行。
当进行上行传输时，第一基站对应发送端，网关对应接收端。当进行下行传输时，网关对应发送端，第一基站对应接收端。在204中，第一基站和网关分别可能位于发送端和接收端。
在发送端，在信号处理时，可以根据所使用的码本的信息将数据块映射成一组调制符号Xl＝{Xl1,Xl2,...,XlK}，其中l为组号，K表示该组的第K个符号。每个调制符号对应资源块中一个RE，然后根据调制符号生成信号波形。
在接收端，在根据信号波形恢复调制符号后，可以根据所使用的码本的信息将调制符号恢复成数据块。
图3是根据本专利申请一个实施例，一种无线通信系统的回程的发送端的处理流程示意图。图3中以SCMA码本为例进行说明。本领域技术人员应当清楚，还可以采用其他形式的码本。如图3所示，可以将经过信道编码后的待发送数据分成一定大小的数据块。然后SCMA编码器对该数据块利用码本的信息进行编码，将数据块映射成一组调制符号。再将该调制符号进行资源映射，映射到空口资源上。在资源映射时还可以插入导频信号，以供接收端进行信道估计以便解码。编码后的数据还可以再进行离散傅里叶逆(Inverse Discrete Fourier Transform，IDFT)变换等操作。然后再将经过这些处理的数据发送出去。可选地，IDFT后的信号在被发送之前还可以插入循环前缀(Cyclic Prefix，CP)。循环前缀使得传输信道与数据构成时域循环卷积，即频域相乘，便于接收端频域均衡。
图4示出了根据本专利申请另一个实施例，回程传输中的接收示意图。如图4所示，可以对所接收的编码后的数据可以先去除循环前缀(Cyclic Prefix，CP)、再进行离散傅里叶变换(DFT)、资源解映射。SCMA译码器将调制符号解映射出数据块。SCMA译码器译码时可以参考信道估计值。
图5是根据本专利申请另一个实施例，一种无线通信的回程传输方法的示意图。如图5所示，该方法包括：
501、网关向控制器发送与网关通信的基站的回程收发器的数目L的信息。控制器接收该数目L的信息。
502、控制器确定码本集合，码本集合包括：J个码本，其中J>L。
503、控制器向网关和第一基站发送码本集合的信息。
504-507、与201-204基本相同。其中，505中的码本的信息是从503中的码本集合中选出的。本实施例中与上述实施例相同或类似的地方将不再赘述。
在502中，在无线通信系统中第一基站的回程收发器的数目为L时，则确定J个(J>L)码本，每个码本包括M个码字，每个码字的长度为K，其中非零元素个数为N，则
Figure PCTCN2016109277-appb-000001
控制器可以将回程时频资源划分成Nrb个正交的时频资源块(Resource Block，RB)，每个时频资源块含有K个资源单元(Resource Element，RE)。其中Nrb是时频资源块的数目、K是码本中的码字的长度。确定了码本集合的信息后，资源分配方式就可以相应确定。本专利申请还可以通过其他方式确定资源分配方式。
发送码本集合的信息可以通过单独的信令进行，也可以通过资源状态更新(resource status update)信令进行。
可选地，在503中发送码本集合的信息时，可以同时发送码本集合的信息和回程资源分配方式的信息。这样网关和第一基站进行回程传输时会更加简单、方便。
在503中，在向第一基站发送码本集合的信息时，还可以携带第一基站的标识。在向网关发送码本集合的信息时，还可以携带网关的标识。如果第一基站和网关上已经存储有多个码本集合，在503中，只需要发送502中所确定的码本集合的编号。
码本集合的信息是随着与网关通信的第一基站的回程收发器的数目而相应半静态变化的。第一基站可以第二时间周期向控制器发送回程需求的信息。第二时间周期大于第一时间周期。
图6示出了无线网络包含2个基站105的处理情况。每个基站105只有一个回程收发器。在这种情形，可以产生6个码本(L＝2＜J＝6)，把回程时频资源划分为若干个正交的资源块，每个资源块包括4个资源单元，资源单元的数目是由码字的长度决定的。码字的长度与码本对应的调制阶数相对应。例如四相相移键控(Quadrature Phase Shift Keying,QPSK)或4阶调制对应的码本包括4个码字。
第一基站BS1的回程需求大于第一基站BS2的回程需求。如图7所示，如果码本 的信息是码本序号，可以为第一基站BS1分配码本集合中的全部6个码本中的4个码本，比如码本序号为1～4的码本。为第二基站BS2分配码本序号为5～6的两个码本。
每个码本有4个不同的调制符号组，每个调制符号组长度为4，对应每个资源块的4个资源单元。从图7中还可以看出，每个调制符号组都有2个符号为零，而同一码本的非零符号所在的资源单元位置相同。在每次传输中，每2个比特形成的数据块对应码本中的一个码字，映射成一组调整符号，6组调制符号在同一个资源块叠加，这样，第一基站BS1可以在每个RB上传输8个比特，分别对应1～4号码本的码字。同样，第一基站BS2可以在每个RB上传输4个比特。
如果码本的信息是码字序号，对于回程需求较大的第一基站，从码字集合中分配多一些码字给该第一基站。在图7所示的情况下，码本集合包括6个码本、24个码字。第一基站BS1的回程需求大于第一基站BS2的回程需求，为第一基站BS1分配码字集合中的全部24个码字中的16个码字，比如码字序号为1～16的码字。为第一基站BS2分配码字序号为17～24的8个码字。
图8是根据本专利申请另一个实施例，一种无线通信的回程传输方法的示意图。如图8所示，该方法包括：
801、网关确定第一回程簇。第一回程簇是与网关的第一回程收发器进行回程传输的基站的回程收发器的集合。如果网关上有多个回程收发器，就相应地有多个回程簇。不同回程簇间的回程链路是空间正交的。下面还将对回程簇做进一步详细说明。
802、网关向控制器发送第一回程簇的信息。第一回程簇的信息包括回程簇ID及基站的回程收发器ID。第一回程簇的信息还可以包括基站ID。
803、控制器为第一回程簇确定对应的码本集合的信息。与502类似，在第一回程簇中基站的回程收发器的数目为L时，则确定J个(J>L)码本。
804、控制器向网关的第一回程收发器和第一回程簇中的基站的回程收发器发送码本集合的信息。网关的第一回程收发器和第一回程簇中的基站的回程收发器接收该码本集合的信息。此步骤可以参考关于503的介绍。
805、第一回程簇中的各个基站的回程收发器向控制器发送回程需求的信息。控制器接收该回程需求的信息。下面以第一基站的第一回程收发器为例进行说明。对于第一回程簇中的其他基站的回程收发器或第一基站的其他回程收发器，也可以类似的处理。
806、控制器根据第一基站的第一回程收发器的回程需求为该第一基站的第一回程收发器确定码本的信息。在整个第一回程簇中，码本的分配与回程需求正相关。可以为回程需求大的基站的回程收发器分配多一些码本序号或码字序号，为回程需求小的基站的回程收发器分配少一些码本序号或码字序号。例如，可以根据回程需求比例分配码本序号或码字序号。
807、控制器向网关的第一回程收发器和第一基站的第一回程收发器发送码本的信息。网关的第一回程收发器和第一基站的第一回程收发器相应接收该码本的信息。
808、网关的第一回程收发器和第一基站的第一回程收发器使用该码本进行回程传输。
在805中，基站根据总的回程需求和各个回程收发器的容量，可以按比例分配回程需求到基站的各个回程收发器。一个实施例如下：
Figure PCTCN2016109277-appb-000002
其中，Reqi为基站分配到第i个回程收发器的回程需求，Req为基站的总回程需求需求，Ci为基站的第i个回程收发器的回程容量，
Figure PCTCN2016109277-appb-000003
为基站的所有回程收发器的容量总和。
可选地，为了增加分配码本的合理性，控制器还可以根据第一基站的第一回程收发器的回程需求和第一基站的第一回程收发器的回程容量确定回程传输的码本的信息。具体地，可以为回程需求大的基站的回程收发器分配多一些码本序号或码字序号，但所分配到的码本或码字能传输的速率不能超过该基站的回程收发器的回程容量：
Nc,iNrblog2M≤Ci＝Nrb·RB·log2(1+SNRi)
其中，Nc,i为分配给基站的第i个回程收发器的码本序号或码字序号的数目，Nrb是时频资源块的数目，M为码本中的码字的数量，Ci为基站的第i个回程收发器的回程容量，RB为时频资源块的大小，SNRi第i个基站的信噪比。
相应地，该方法还可以包括：第一基站向控制器发送第一基站的第一回程收发器的回程容量的信息。在网关已获取第一基站的第一回程收发器的回程容量的信息的情况下，也可以由网关向控制器发送第一基站的第一回程收发器的回程容量的信息。
在网关中，一个回程收发器与一个天线单元相耦合。如果一个网关上有多个回程 收发器，则与其耦合的多个天线单元各不相同。如果一个基站上有多个回程收发器，则与其耦合的多个天线单元各不相同。网关的各个天线单元在空间上是正交的。基站的各个天线单元在空间上是正交的。这样，网关的回程收发器与基站的回程收发器之间的回程链路的方向性也不同，在空间上是正交的。
通过划分回程簇，就可以利用空间的正交性。回程簇内的基站的回程收发器的数目发生变化时，回程簇即发生变化。相应地，码本集合的信息也相应变化。对于回程簇内特定的基站回程收发器，其回程需求变化时，码本的信息相应变化。当发生变化时，则控制器需要发送变化后的码本集合的信息和码本的信息。
通过划分回程簇，可以实现各个回程簇之间进行码本集合的复用，进一步增强超密集网络的回程容量。
如图9所示，一个网关的回程收发器即可对应一个回程簇。在图9中示出了网关103有两个回程收发器，分别是第一回程收发器103a和第二回程收发器103c。这样网关103即可对应有两个回程簇，分别是回程簇1和回程簇2。
下面将对如何确定回程簇做进一步详细说明。图10是划分回程簇的方法的示意图。如图10所示，该方法包括如下步骤：
1001、第一基站向网关发送：第一基站的每个回程收发器到网关的每个回程收发器的的参考信号。网关接收该参考信号。网关还会接收其周围的其他基站的回程收发器所发送的参考信号。该参考信号可以是导频信号或者是其他参考信号。
1002、网关测量网关的各个回程收发器与其周围的基站的每个回程收发器之间的信号的强度。
1003、将信号强度大于预设值T的基站的回程收发器归入该网关的回程收发器所对应的回程簇。预设值T可以根据实际情况预先进行设定。例如可以设定为网关的回程收发器的灵敏度。
如果某个基站的回程收发器到网关的第一回程收发器与网关的其他回程收发器的信号强度都大于预设值T，可以比较该信号强度，并将该基站的回程收发器归入到对应信号强度最大的一个网关的回程收发器所对应的回程簇。
例如，如图9所示，网关的第一回程收发器103a到某个基站的第一回程收发器的信号强度A1大于预设值T。网关的第二回程收发器103b到该个基站的第一回程收发器的信号强度A2大于预设值T。如果A2大于A1，则将该基站的第一回程收发器归入 到第二回程簇2中。如果A2等于A1，将该基站的第一回程收发器归入到A1或A2对应的网关的第一回程收发器103a所对应的第一回程簇1中或第二回程簇2中。
值得注意的是，一个基站上的多个回程收发器可以被归入到一个回程簇中，也可以被归入到多个不同的回程簇中。这主要由该基站上的回程收发器与网关的回程收发器之间的信号强度决定。
图11是根据本专利申请另一个实施例，一种无线通信的回程传输方法的交互示意图。如图11所示，该方法包括：
1101、与1001基本相同。
1102、与1002基本相同。
1103、网关向控制器发送网关的第一回程收发器与其周围的基站的每个回程收发器之间的信号的强度。
1104、控制器确定第一回程簇。确定回程簇的方法可以参考上文。
1105-1110、与803-808基本相同。
上述主要从各个网元之间交互的角度对本发明实施例提供的方案进行了介绍。可以理解的是，各个网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本专利申请进一步给出实现上述方法实施例中各步骤及方法的装置实施例。
图12示出了上述实施例中所涉及的控制器的一种可能的结构示意图。如图12所示，控制器包括：收发器1201；存储器1202，用于存储指令；处理器1203，与所述存储器1202和收发器1201分别相连，用于执行所述指令。处理器在执行所述指令时通过所述收发器1201执行上述实施例中控制器的上述接收、发送、获取等步骤。处理器1203在执行所述指令时还进行控制、处理等步骤。
具体地，处理器1202在执行所述指令时执行如下步骤：通过所述收发器1201获取第一基站的回程需求的信息；指示所述收发器1201向所述第一基站所属的网关和所述第一基站发送码本的信息；所述码本的信息是所述处理器1203根据所述回程需求确 定的，所述回程传输是所述第一基站与所述网关之间的传输。
所述处理器1203在执行所述指令时还执行如下步骤：通过所述收发器1201获取与所述网关通信的基站的回程收发器1201的数目L的信息；指示所述收发器1201向所述网关和所述第一基站发送码本集合的信息，所述码本集合包括：J个码本，其中J>L，所述码本是从所述码本集合中选取的。
所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器1201进行回程传输的所述基站的回程收发器1201的集合，不同回程簇的回程链路是空间正交的；所述第一回程簇包含所述第一基站的第一回程收发器1201。
所述处理器1203在执行所述指令时还执行如下步骤：通过所述收发器1201获取所述第一基站的第一回程收发器1201的回程需求的信息；指示所述收发器1201向所述网关和所述第一基站发送所述第一基站的第一回程收发器1201的码本的信息；所述第一基站的第一回程收发器1201的码本的信息是所述控制器根据所述第一基站的第一回程收发器1201的回程需求确定的，所述第一基站的第一回程收发器1201的码本是从所述第一回程簇对应的码本集合中选取的。
图13示出了上述实施例中所涉及的网关的一种可能的结构示意图。如图13所示，网关包括第一回程收发器1301；存储器1302，用于存储指令；处理器1303，与所述存储器1302和第一回程收发器1301分别相连，用于执行所述指令。处理器1302在执行所述指令时通过所述第一回程收发器1301执行上述实施例中控制器的上述接收、发送、获取等步骤。处理器1303在执行所述指令时还进行控制、处理等步骤。
具体地，处理器1303在执行所述指令时执行如下步骤：通过所述网关的回程收发器1301从控制器获取码本的信息，所述码本的信息是根据第一基站的回程需求确定的；通过所述网关的回程收发器1301使用所述码本与所述第一基站进行回程传输。
所述处理器1303在执行所述指令时还执行如下步骤：指示所述网关的回程收发器1301向所述控制器发送与所述网关通信的基站的回程收发器的数目L的信息；通过所述回程收发器从所述控制器获取码本集合的信息，所述码本集合包括J个码本，其中J>L，所述码本是从所述码本集合中选取的。
所述码本集合是第一回程簇对应的码本集合；所述网关的所述回程收发器包括网关的第一回程收发器；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回 程簇包含所述第一基站的第一回程收发器。
所述处理器1303在执行所述指令时还执行如下步骤：通过所述网关的回程收发器1301获取所述第一基站的第一回程收发器的码本的信息；所述第一基站的第一回程收发器的码本的信息是根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
图14示出了上述实施例中所涉及的第一基站的一种可能的结构示意图。如图14所示，第一基站包括第一回程收发器1401；存储器1402，用于存储指令；处理器1403，与所述存储器1402和第一回程收发器1401分别相连，用于执行所述指令。处理器1402在执行所述指令时通过所述第一回程收发器1401执行上述实施例中控制器的上述接收、发送、获取等步骤。处理器1403在执行所述指令时还进行控制、处理等步骤。
具体地，处理器1403在执行所述指令时执行如下步骤：指示所述第一基站的回程收发器1401向控制器发送所述第一基站的回程需求的信息；通过所述第一基站的回程收发器1401从控制器获取码本的信息，所述码本的信息是根据所述第一基站的回程需求确定的；通过所述第一基站的回程收发器1401使用所述码本与网关进行回程传输。
所述处理器在执行所述指令时还执行如下步骤：通过所述第一基站的回程收发器1401从所述控制器获取码本集合的信息；所述码本集合包括J个码本，其中J>L，其中L为与所述网关通信的基站的回程收发器的数目，所述码本是从所述码本集合中选取的。
所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回程簇包含所述第一基站的第一回程收发器。
所述处理器1403在执行所述指令时还执行如下步骤：指示所述第一基站的第一回程收发器向所述控制器发送所述第一基站的第一回程收发器的回程需求的信息；通过所述第一基站的第一回程收发器获取所述第一基站的第一回程收发器的码本的信息；所述第一基站的第一回程收发器的码本的信息是根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功 能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本专利申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，结构的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本专利申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
本专利申请所有实施例中的网络实体名称可以扩展为具有相同或类似功能的名称。
此外，本专利申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语"制品"涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，CD(Compact Disk，压缩盘)、DVD(Digital Versatile Disk，数字通用盘)等)，智能卡和闪存器件(例如，EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语"机器可读介质"可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以 存储在一个计算机可读取存储介质中。基于这样的理解，本专利申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本专利申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本专利申请的具体实施方式，但本专利申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本专利申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本专利申请的保护范围之内。因此，本专利申请的保护范围应所述以权利要求的保护范围为准。

Claims (30)

  1. 一种无线通信的回程传输方法，其特征在于包括：
    第一基站向控制器发送所述第一基站的回程需求的信息；
    所述第一基站从所述控制器获取码本的信息，所述码本的信息是根据所述第一基站的回程需求确定的；
    所述第一基站使用所述码本与网关进行回程传输。
  2. 如权利要求1所述的方法，其特征在于所述方法还包括：
    所述第一基站从所述控制器获取码本集合的信息；
    所述码本集合包括J个码本，其中J>L，其中L为与所述网关通信的基站的回程收发器的数目，所述码本是从所述码本集合中选取的。
  3. 如权利要求2所述的方法，其特征在于所述方法还包括：
    所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回程簇包含所述第一基站的第一回程收发器。
  4. 如权利要求3所述的方法，其特征在于：
    所述第一基站向所述控制器发送所述第一基站的所述回程需求的信息，包括：所述第一基站向所述控制器发送所述第一基站的第一回程收发器的回程需求的信息；
    所述第一基站从所述控制器获取所述码本的信息，包括：
    所述第一基站从所述控制器获取所述第一基站的第一回程收发器的码本的信息；所述第一基站的第一回程收发器的码本的信息是根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
  5. 如权利要求1-4任一所述的方法，其特征在于：
    所述码本为非正交的码本。
  6. 一种无线通信的回程传输方法，其特征在于包括：
    控制器获取第一基站的回程需求的信息；
    所述控制器向所述第一基站所属的网关和所述第一基站发送码本的信息；所述码本的信息是所述控制器根据所述回程需求确定的，所述回程传输是所述第一基站与所 述网关之间的传输。
  7. 如权利要求6所述的方法，其特征在于所述方法还包括：
    所述控制器获取与所述网关通信的基站的回程收发器的数目L的信息；
    所述控制器向所述网关和所述第一基站发送码本集合的信息，所述码本集合包括：J个码本，其中J>L，所述码本是从所述码本集合中选取的。
  8. 如权利要求7所述的方法，其特征在于：
    所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的；所述第一回程簇包含所述第一基站的第一回程收发器。
  9. 如权利要求8所述的方法，其特征在于：
    所述控制器获取所述第一基站的所述回程需求的信息，包括：所述控制器获取所述第一基站的第一回程收发器的回程需求的信息；
    所述控制器向所述网关和所述第一基站发送所述码本的信息，包括：所述控制器向所述网关和所述第一基站发送所述第一基站的第一回程收发器的码本的信息；所述第一基站的第一回程收发器的码本的信息是所述控制器根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
  10. 如权利要求6-9任一所述的方法，其特征在于：
    所述码本为非正交的码本。
  11. 一种无线通信的回程传输方法，其特征在于包括：
    网关从控制器获取码本的信息，所述码本的信息是根据第一基站的回程需求确定的；
    所述网关使用所述码本与所述第一基站进行回程传输。
  12. 如权利要求11所述的方法，其特征在于所述方法还包括：
    所述网关向所述控制器发送与所述网关通信的基站的回程收发器的数目L的信息；
    所述网关从所述控制器获取码本集合的信息，所述码本集合包括J个码本，其中J>L，所述码本是从所述码本集合中选取的。
  13. 如权利要求12所述的方法，其特征在于所述方法还包括：
    所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空 间正交的；所述第一回程簇包含所述第一基站的第一回程收发器。
  14. 如权利要求13所述的方法，其特征在于：
    所述网关从所述控制器获取所述码本的信息，包括：
    所述网关从所述控制器获取所述第一基站的第一回程收发器的所述码本的信息；所述第一基站的第一回程收发器的码本的信息是根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
  15. 如权利要求11-14任一所述的方法，其特征在于：
    所述码本为非正交的码本。
  16. 一种第一基站，其特征在于包括：
    第一基站的回程收发器；
    存储器，用于存储指令；
    处理器，与所述存储器和所述第一基站的回程收发器分别相连，用于执行所述指令，以在执行所述指令时执行如下步骤：
    指示所述第一基站的回程收发器向控制器发送所述第一基站的回程需求的信息；
    通过所述第一基站的回程收发器从控制器获取码本的信息，所述码本的信息是根据所述第一基站的回程需求确定的；
    通过所述第一基站的回程收发器使用所述码本与网关进行回程传输。
  17. 如权利要求16所述的第一基站，其特征在于所述处理器在执行所述指令时还执行如下步骤：
    通过所述第一基站的回程收发器从所述控制器获取码本集合的信息；
    所述码本集合包括J个码本，其中J>L，其中L为与所述网关通信的基站的回程收发器的数目，所述码本是从所述码本集合中选取的。
  18. 如权利要求17所述的第一基站，其特征在于：
    所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回程簇包含所述第一基站的第一回程收发器。
  19. 如权利要求18所述的第一基站，其特征在于：
    所述处理器在执行所述指令时还执行如下步骤：指示所述第一基站的第一回程收发器 向所述控制器发送所述第一基站的第一回程收发器的回程需求的信息；
    通过所述第一基站的第一回程收发器获取所述第一基站的第一回程收发器的码本的信息；所述第一基站的第一回程收发器的码本的信息是根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
  20. 如权利要求16-19任一所述的第一基站，其特征在于：
    所述码本为非正交的码本。
  21. 一种控制器，其特征在于包括：
    收发器；
    存储器，用于存储指令；
    处理器，与所述存储器和收发器分别相连，用于执行所述指令，以在执行所述指令时执行如下步骤：
    通过所述收发器获取第一基站的回程需求的信息；
    指示所述收发器向所述第一基站所属的网关和所述第一基站发送码本的信息；
    所述码本的信息是所述处理器根据所述回程需求确定的，所述回程传输是所述第一基站与所述网关之间的传输。
  22. 如权利要求21所述的控制器，其特征在于：
    所述处理器在执行所述指令时还执行如下步骤：
    通过所述收发器获取与所述网关通信的基站的回程收发器的数目L的信息；
    指示所述收发器向所述网关和所述第一基站发送码本集合的信息，所述码本集合包括：J个码本，其中J>L，所述码本是从所述码本集合中选取的。
  23. 如权利要求22所述的控制器，其特征在于：
    所述码本集合是第一回程簇对应的码本集合；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的；所述第一回程簇包含所述第一基站的第一回程收发器。
  24. 如权利要求23所述的控制器，其特征在于：
    所述处理器在执行所述指令时还执行如下步骤：通过所述收发器获取所述第一基站的第一回程收发器的回程需求的信息；
    指示所述收发器向所述网关和所述第一基站发送所述第一基站的第一回程收发器的码 本的信息；所述第一基站的第一回程收发器的码本的信息是所述控制器根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
  25. 如权利要求21-24任一所述的控制器，其特征在于：
    所述码本为非正交的码本。
  26. 一种网关，其特征在于包括：
    网关的回程收发器；
    存储器，用于存储指令；
    处理器，与所述存储器和回程收发器分别相连，用于执行所述存储器存储的所述指令，以在执行所述指令时执行如下步骤：
    通过所述网关的回程收发器从控制器获取码本的信息，所述码本的信息是根据第一基站的回程需求确定的；
    通过所述网关的回程收发器使用所述码本与所述第一基站进行回程传输。
  27. 如权利要求26所述的网关，其特征在于：
    所述处理器在执行所述指令时还执行如下步骤：
    指示所述网关的回程收发器向所述控制器发送与所述网关通信的基站的回程收发器的数目L的信息；
    通过所述回程收发器从所述控制器获取码本集合的信息，所述码本集合包括J个码本，其中J>L，所述码本是从所述码本集合中选取的。
  28. 如权利要求27所述的网关，其特征在于：
    所述码本集合是第一回程簇对应的码本集合；所述网关的所述回程收发器包括网关的第一回程收发器；所述第一回程簇是与所述网关的第一回程收发器进行回程传输的所述基站的回程收发器的集合，不同回程簇的回程链路是空间正交的，所述第一回程簇包含所述第一基站的第一回程收发器。
  29. 如权利要求28所述的网关，其特征在于：
    所述处理器在执行所述指令时还执行如下步骤：通过所述网关的回程收发器获取所述第一基站的第一回程收发器的码本的信息；所述第一基站的第一回程收发器的码本的信息是根据所述第一基站的第一回程收发器的回程需求确定的，所述第一基站的第一回程收发器的码本是从所述第一回程簇对应的码本集合中选取的。
  30. 如权利要求26-29任一所述的网关，其特征在于：
    所述码本为非正交的码本。
PCT/CN2016/109277 2016-01-16 2016-12-09 一种无线通信的回程传输方法、控制器、基站、网关 WO2017121214A1 (zh)

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