WO2018145566A1 - 一种终端与终端之间通信的方法、网络侧设备和终端 - Google Patents

一种终端与终端之间通信的方法、网络侧设备和终端 Download PDF

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Publication number
WO2018145566A1
WO2018145566A1 PCT/CN2018/073446 CN2018073446W WO2018145566A1 WO 2018145566 A1 WO2018145566 A1 WO 2018145566A1 CN 2018073446 W CN2018073446 W CN 2018073446W WO 2018145566 A1 WO2018145566 A1 WO 2018145566A1
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Prior art keywords
terminal
information
time
frequency resource
uplink
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Application number
PCT/CN2018/073446
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English (en)
French (fr)
Inventor
苏宏家
林英沛
庞继勇
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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 EP18751765.1A priority Critical patent/EP3573399B1/en
Publication of WO2018145566A1 publication Critical patent/WO2018145566A1/zh
Priority to US16/535,932 priority patent/US10797777B2/en

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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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using 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
    • H04B7/06—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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06954—Sidelink beam training with support from third instance, e.g. the third instance being a base station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • the present application relates to the field of wireless communications technologies, and in particular, to a method for communicating between a terminal and a terminal, a network side device, and a terminal.
  • wireless communication technology With the development of wireless communication technology and the popularity of intelligent terminals, the number of terminals in wireless cellular networks is experiencing explosive growth.
  • the services supported by wireless communication systems have also evolved from initial voice and short message to wireless high-speed data communication.
  • the number of wireless connections around the world is experiencing rapid and rapid growth, and a variety of new types of wireless services, such as the Internet of Things and Virtual Reality (VR), are emerging for next-generation wireless communications.
  • the system puts forward higher requirements.
  • the communication between the terminal and the terminal includes a communication mode such as D2D (Device to Device), M2M (Machine to Machine), and UE cooperation (UE cooperation).
  • Direct communication between terminals can share the heavy network load of wireless cellular networks, complement existing cellular network architectures and introduce new revenue-generating models.
  • D2D communication mode D2D communication mode
  • user data is directly transmitted between terminals, which avoids user data in cellular communication being transmitted through the network, thereby generating link gain; in addition, D2D users and D2D and Resources between cells can be multiplexed, thereby generating resource multiplexing gain.
  • the link gain and resource multiplexing gain can improve the efficiency of the wireless spectrum resources, thereby improving the overall network throughput.
  • Beam forming is a combination of antenna technology and digital signal processing technology for directional signal transmission or reception.
  • the terminal at both ends of the transceiver must complete the beamforming training.
  • the time is determined according to the number of antennas at the two ends. The longer the antenna is, the longer the beamforming training is.
  • the beam training between the base station and the terminal needs to be performed between the terminal and the terminal. In the case of forming training, it is necessary to occupy more channel resources, and in the case of a large number of terminals, the spectrum utilization rate of the system is lowered.
  • the present application describes a method, apparatus and system for communication between a terminal and a terminal.
  • the embodiment of the present application provides a method for communication between a terminal and a terminal, including: the network side device scheduling terminal simultaneously performs uplink beam training and side link beam training, and first configures a first channel for transmitting uplink information for the terminal. a time-frequency resource and a second time-frequency resource for transmitting side-link (SL) information; after receiving the indication information of the network-side device, the terminal transmits to the network-side device for uplinking on the first time-frequency resource.
  • the uplink information of the beam training, and the side link information for performing side link beamforming training is transmitted to the other terminal on the second time-frequency resource.
  • the second time-frequency resource that the terminal transmits the side link information to the other terminal is a Sidelink Synchronization Channel (SSCH).
  • SSCH Sidelink Synchronization Channel
  • the side link information transmitted by the terminal on the side link synchronization channel is Sidelink Synchronization Signal (SLSS), and after receiving the synchronization information, the other terminal selects whether to The synchronization of the terminal.
  • SLSS Sidelink Synchronization Signal
  • the second time-frequency resource that the terminal transmits the side link information to the other terminal is a Physical Sidelink Discovery Channel (PSDCH).
  • PSDCH Physical Sidelink Discovery Channel
  • the side link information transmitted by the terminal on the physical edge link discovery channel is a side link discovery message (Discovery Message), and after receiving the discovery message, the another terminal selects whether to perform discovery feedback according to its own needs.
  • the second time-frequency resource that the terminal transmits the side link information to the other terminal is a side link specific channel, and the terminal is in the
  • the side link information transmitted on the specific channel of the side link is the side link synchronization information and the side link discovery message, and after receiving the synchronization information and the discovery message, the other terminal selects whether it is related to the terminal according to its own situation. Synchronize and make discovery feedback.
  • the discovery process between the terminal and the terminal is based on whether the terminal and the other terminal have completed synchronization, and according to the requirement, whether to send a discovery message to the opposite end.
  • the terminal performs beamforming training of the edge link based on the existing uplink beam training process, and does not need to additionally use new time-frequency resources for edge link beamforming training, and completes the terminal. Synchronization with the terminal or discovery between the terminal and the terminal, or simultaneous synchronization and discovery between the terminal and the terminal, improves the communication efficiency between the terminal and the terminal.
  • the embodiment of the present application provides a network side device, which may be a base station or a control node.
  • the network device includes:
  • a processor configured to configure, for the terminal, a first time-frequency resource for transmitting uplink information and a second time-frequency resource for transmitting edge link information; the first time-frequency resource and the second time-frequency resource do not overlap;
  • a transceiver configured to send an indication message to the terminal, where the indication message carries the first time-frequency resource and the second time-frequency resource;
  • the transceiver is further configured to receive uplink information that is sent to the terminal on the first time-frequency resource for performing uplink beam training; and the edge link information is that the terminal is in the first time-frequency resource. Edge link information for performing edge link beam training transmitted on.
  • the transceiver receives, by the terminal, the uplink information that is sent by the terminal to the uplink time beam training for performing uplink beam training, and is performed when the terminal transmits the edge link information to another terminal. of.
  • the embodiment of the present application provides a base station, which has a function of realizing the behavior of the base station in the actual method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the base station includes a processor and a transceiver configured to support the base station to perform the corresponding functions in the above methods.
  • the transceiver is configured to support communication between the base station and the terminal, and send information or signaling involved in the foregoing method to the terminal, and receive information or instructions sent by the base station.
  • the base station can also include a memory for coupling with the processor that stores the necessary program instructions and data for the base station.
  • the embodiment of the present application provides a terminal, where the terminal has a function of implementing terminal behavior in the design of the foregoing method.
  • the function can be implemented by hardware, and the structure of the terminal includes a transceiver and a processor.
  • the corresponding software implementation can also be performed by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the terminal includes:
  • a transceiver configured to receive an indication message of the network side device
  • a processor configured to acquire, according to the indication message, a first time-frequency resource configured by the network side device to transmit uplink information, and a second time-frequency resource configured to transmit side link information configured by the network side device
  • the first time-frequency resource does not overlap with the second time-frequency resource
  • the transceiver is further configured to transmit uplink information for performing uplink beam training to the network side device on the first time-frequency resource acquired by the processor, and at the second time frequency acquired by the processor.
  • the side link information for performing side link beam training is transmitted to the other terminal on the resource.
  • an embodiment of the present application provides a control node, which may include a controller/processor, a memory, and a communication unit.
  • the controller/processor may be used to coordinate resource management and configuration between multiple base stations, and may be used to perform a method for configuring a time-frequency resource for a terminal as described in the foregoing embodiments.
  • the memory can be used to store program code and data for the control node.
  • the communication unit is configured to support the control node to communicate with the base station, for example, to send information of the configured resource to the base station.
  • the embodiment of the present application provides a communication system, where the system includes the base station and the terminal, and the terminal includes at least two D2D or M2M terminals or a cooperation terminal.
  • the control node in the above embodiment may also be included.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the base station, which includes a program designed to perform the above aspects.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the terminal, which includes a program designed to execute the above aspects.
  • the network side device configures, for the terminal, a first time-frequency resource for uplink beamforming training and a second time-frequency resource for edge link beamforming training, and the terminal may be based on the current In the uplink beam training process, the side link beamforming training is performed at the same time, and beamforming training of communication between the terminal and the terminal can be performed without using additional time-frequency resources, thereby greatly saving time-frequency resources and improving. The efficiency of communication between the terminal and the terminal.
  • FIG. 1 is a schematic structural diagram of still another communication system according to an embodiment of the present application.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for communication between a terminal and a terminal according to an embodiment of the present disclosure
  • 3 is a schematic diagram of time-frequency resource allocation in an embodiment of the present application.
  • FIG. 5 is still another schematic diagram of uplink beamforming training and side link beamforming training in the embodiment of the present application.
  • FIG. 6 is still another schematic diagram of time-frequency resource allocation in the embodiment of the present application.
  • FIG. 7 is still another schematic diagram of uplink beamforming training and side link beamforming training in the embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a process of combining uplink beamforming training and edge link beamforming training with a synchronization process between a terminal and a terminal according to an embodiment of the present application;
  • FIG. 9 is a schematic flowchart of combining the uplink beamforming training and the edge link beamforming training with the discovery process between the terminal and the terminal in the embodiment of the present application;
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a control node according to an embodiment of the present disclosure.
  • the embodiment of the present application proposes a solution based on the communication system shown in FIG. 1 . To improve the efficiency of the beamforming training of the terminal.
  • the method for communication between the terminal and the terminal provided by the present application can be applied to high frequency communication, and can also be applied to low frequency communication.
  • the high frequency in the embodiment of the present application may include high frequency HF3-30MHZ, VHF VHF 30-300MHZ, UHF UHF300-3GHZ and UHF SHF 3G-AGHZ. With the development of communication technology, the value of A The range can be larger.
  • the embodiment of the present application provides a communication system.
  • the communication system includes at least one network device and a plurality of terminals (Terminal).
  • the network device in this embodiment of the present application is a device deployed in a radio access network to provide a wireless communication function for a terminal.
  • the network device may be an access network node, a controller with an access function, or a base station.
  • the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (evolved NodeB, eNB or eNodeB), in the third In a 3rd generation (3G) system, it is called a Node B or the like.
  • a base station is taken as an example for introduction.
  • the plurality of terminals in the communication system 100 include at least two terminals that can communicate with each other, and further include terminals that can be used for cellular communication.
  • Cellular communication refers to communication between a terminal and a base station.
  • terminal T1, terminal T2, terminal T3, and terminal T4 perform cellular communication with base station 20 via an access link.
  • the communication between the terminal and the terminal refers to the direct communication between the two terminals.
  • the terminal performing D2D communication may be referred to as a D2D terminal, and the link between two terminals performing D2D communication may be called
  • two of the pair of D2D links can be the receiving end and the transmitting end of each other.
  • one of the terminals may be the transmitting end and the other terminal may be the receiving end.
  • both terminals support simultaneous transmission and reception functions, each of the D2D terminals may be both a transmitting end and a receiving end.
  • the terminal may also have a cellular communication function, and the cellular terminal may also have a function of communicating with other terminals.
  • the terminals T2-T4 in FIG. 1 can perform both cellular communication and D2D communication.
  • multiple terminals may all be located under the coverage of the same base station (In-Coverage), and the multiple terminals may be served by the same base station, and the terminals under the same base station coverage.
  • In-Coverage terminals For In-Coverage terminals.
  • the terminal T1 - the terminal T4 are all located under the coverage of the BS 20, and are served by the BS 20, and the terminal T2 and the terminal T3 may be referred to as an In-Coverage terminal.
  • the terminal T5 to the terminal T7 are outside the base station coverage (Out-of-Coverage), and the terminal T6 and the terminal T7 are referred to as an Out-of-Coverage terminal.
  • the multiple terminals in the communication system 100 may also be located under different base station coverage, that is, different terminals and cellular terminals may also be served by different base stations.
  • the communication system 100 includes, but is not limited to, a narrowband Internet of Things system (English: Narrow Band-Internet of Things, referred to as NB-IoT), and a global mobile communication system (English: Global System for Mobile Communications) , abbreviation: GSM), Enhanced Data Rate for GSM Evolution (English: Enhanced Data Rate for GSM Evolution, EDGE for short), Wideband Code Division Multiple Access (WCDMA), code division Multiple Access 2000 System (English: Code Division Multiple Access, CDMA2000 for short), Time Division-Synchronization Code Division Multiple Access (TD-SCDMA), Long Term Evolution System (English: Long) Term Evolution (LTE), the three major application scenarios of next-generation 5G mobile communication systems, eMBB, URLLC and eMTC, or new communication systems that will emerge in the future.
  • GSM narrowband Internet of Things
  • EDGE Enhanced Data Rate for GSM Evolution
  • WCDMA Wideband Code Division Multiple Access
  • CDMA2000 Code Division Multiple Access 2000 System
  • TD-SCDMA Time Division
  • the control node is connected to one or more base stations, and may perform unified scheduling on resources in the system, and may allocate resources to the terminal, perform resource reuse decision, or interfere with coordination.
  • this control node can also be integrated with the base station.
  • the control node may connect to a base station and allocate resources for a plurality of terminals and cellular terminals covered by the base station.
  • the base station may be a Node B in a UMTS system
  • the control node may be a network controller.
  • the base station may be a small station
  • the control node may be a macro base station that covers the small station.
  • the control node may be a wireless network cross-system cooperative controller or the like, and the base station is a base station in the wireless network, which is not limited in the embodiment of the present application.
  • the terminals involved in the embodiments of the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem.
  • the terminal may also be referred to as a mobile station (MS), terminal equipment, and may also include a subscriber unit, a cellular phone, a smart phone, and wireless data.
  • MS mobile station
  • MTC machine type communication
  • the number and types of terminals included in the communication system 100 shown in FIG. 1 are merely examples, and the embodiment of the present application is not limited thereto.
  • the communication system 100 shown in FIG. 1 although the base station BS20 and a plurality of terminals are shown, the communication system 100 may not be limited to include the base station and the terminal, and may also include a core network device. Or devices for carrying virtualized network functions, etc., will be apparent to those of ordinary skill in the art and will not be described in detail herein.
  • the embodiments of the present application are applicable not only to the mobile cellular network communication system, but also to other communication systems, such as a WLAN (wireless local area network) system.
  • WLAN wireless local area network
  • a subcarrier is generally defined as a basic unit in a frequency domain, and a plurality of subcarriers are composed of one RB (Resource Block); a symbol is defined as a basic unit in the time domain. A number of symbols form a sub frame.
  • One subframe defined for the next generation wireless communication network for transmission includes N symb symbols, and the total frequency domain bandwidth is composed of N RB RBs, and the size of one RB is Ie an RB Subcarrier composition. Define the total bandwidth used for upstream transmission to Define the total bandwidth used for D2D communication as It is worth noting that with There may be at least 0 consecutive or discrete Guard Bands in which no information is sent by the sender.
  • FIG. 2 is a schematic flowchart of a method for communication between a terminal and a terminal according to an embodiment of the present application.
  • the network side device (for example, the base station 20 and the control node 60 in the communication system 100 in FIG. 1) is to schedule terminals (for example, terminals in the coverage areas of the base stations or control nodes) to perform uplink beamforming training simultaneously. And side link beamforming training.
  • Step 100 The network side device configures, for the terminal, a first time-frequency resource for transmitting uplink information and a second time-frequency resource for transmitting edge link information, and notifies the terminal of the configured resource by using the indication message;
  • the one-time frequency resource does not overlap with the second time-frequency resource, that is, a part of the frequency domain resource is used for transmitting uplink information, and another part of the frequency domain resource is used for transmitting information with other terminals, that is, side link information.
  • a network time device is used as a terminal to configure a first time-frequency resource with a time length of one subframe and a frequency domain of the entire bandwidth as an example.
  • the first time-frequency resource configured by the network side device for transmitting the uplink information for uplink beamforming training is represented as m is an integer; and the second time-frequency resource is expressed as The total bandwidth of the available frequency domain of the system is
  • Step 101 The terminal receives an indication message of the network side device, where the indication message indicates that the network side device configures the first time-frequency resource for transmitting uplink information. And a second time-frequency resource for transmitting side link information
  • Step 102 The terminal is in the first time-frequency resource. Uplinking uplink information for performing uplink beam training to the network side device, and simultaneously, at the second time-frequency resource The side link information for performing side link beamforming training is transmitted to the other terminal.
  • “simultaneously” means that the terminal transmits both the uplink information to the network side device and the side link information to the other terminal on a certain symbol in the same subframe.
  • the terminal performs beamforming training of the edge link based on the existing uplink and downlink beam training process, and does not need to additionally use new time-frequency resources for beamforming training of the edge link.
  • the terminal transmits the uplink information to the network side device and the side link information to the other terminal through the respective antenna transceiver units.
  • the total number of antenna transceiver units of the terminal is X, where the value of X may be a 2 ⁇ 2 antenna matrix, or may be a 4 ⁇ 4 antenna matrix, or may be an 8 ⁇ 8 antenna.
  • the total number of antenna transceiver units of the network side device is Y, wherein the value of Y may be a 4 ⁇ 4 antenna matrix, or an 8 ⁇ 8 antenna matrix, or may also be a 32 ⁇ 32 antenna.
  • the network side device schedules the first time-frequency resource of the terminal in a specific subframe (corresponding to N symb in FIG. 3) through downlink physical control signaling (also through other upper layer signaling such as system information or RRC signaling) ( Corresponding to Figure 3 Transmitting uplink information for uplink beamforming training, and second time-frequency resources in the specific subframe (corresponding to FIG. 3 Send side link information for side link beamforming training, as follows:
  • the terminal utilizes its xth antenna transceiver unit at the first time-frequency resource Up to the yth antenna transceiver unit of the network side device transmits uplink information for uplink beam training; meanwhile, at the second time frequency resource Transmitting side link information to the z-th antenna transceiver unit of the other terminal for edge link beam training; wherein x ⁇ [1, X], y ⁇ [1, Y], z ⁇ [1, Z], I ⁇ [1,N], N is the total number of time domain units configured by the network side device for transmitting uplink information and side link information.
  • the terminal transmits the first time-frequency resource of the uplink information to the network side device.
  • the uplink information transmitted on the PRACH is Random Access Message (RAM).
  • the terminal transmits the first time-frequency resource of the uplink information to the network side device.
  • the uplink information transmitted on the PUCCH is uplink control information.
  • the network side device knows the transmission capability of the terminal according to the terminal accessing the network, and according to different terminals.
  • Each antenna transceiver unit repeatedly transmits 16 uplink information, and the 16 uplink information is respectively sent to 16 antenna transceiver units of the network side device, and each antenna transceiver unit transmits 4 times of side link information, and the 4 times side information The link information is sent to the four antenna transceiver units of the other terminal.
  • the Y antenna transceiver units of the network side device After the Y antenna transceiver units of the network side device receive the uplink information sent by the X antenna transceiver units of the terminal, select an optimal antenna transceiver unit from the X ⁇ Y group different antenna transceiver units as the uplink beam.
  • the forming training result is sent to the terminal.
  • the Z antenna transceiver units of the other terminal receive the side link information sent by the X antenna transceiver units of the terminal, obtain the side link beamforming training data of the X ⁇ Z group different antenna transceiver units, and Determining an optimal set of antenna transceiver units from the edge link beamforming training data of the X ⁇ Z group of different antenna transceiver units, and reporting the beam training result to the network side device or directly to the terminal .
  • the embodiment of the present application may first perform training at an antenna sector level.
  • beam-level training is performed to narrow the specific direction.
  • the angle is further obtained by gain; beam-level training can also be performed directly.
  • the beamforming training in the embodiment of the present application is mainly described by taking an antenna sector level as an example, and does not limit which level of beamforming training must be used.
  • the base station 20 and the terminals T2 and BS20 under the coverage thereof perform uplink beamforming training and side link forming training with the terminal T3, and complete side link synchronization and side link discovery in the process.
  • the base station 20 and the terminal T2 and the terminal T3 support beam switching of four antenna sectors.
  • the base station 20 transmits a DL Sweeping subframe on the subframe 0 (subframe 0) and the subframe 1 to perform downlink beamforming training and transmits downlink information, where the downlink information includes downlink control information, a synchronization signal, a broadcast signal, a sector indication, a beam indication, and the like. At least one.
  • the base station 20 schedules the terminal T2 to perform uplink beamforming training in subframe 3 (subframe3), and the terminal T2 transmits the uplink information using the antenna antenna 1 in the first symbol of the subframe 3 (corresponding to the first 0th symbol in FIG. 3).
  • the side link information in this embodiment, the uplink information is in the frequency domain (corresponding to FIG. 3 with And at least one of the random access information transmitted in the PRACH and the uplink control information sent in the PUCCH, for example, a scheduling request (SR).
  • SR scheduling
  • the antenna of the terminal T2 supports 4 sectors, and the terminal T2 repeatedly transmits the same uplink information and sidechains in the second, third, and fourth symbols using the own antenna sector 1 Road information.
  • the terminal T2 repeatedly transmits the same uplink information and side link information in the subsequent 4 symbols using the own antenna sector 2, and similarly, the terminal T2 repeatedly transmits the same uplink information 4 times in the own antenna sectors 3 and 4, respectively.
  • side link information When one subframe is insufficient to complete the entire beamforming training, the BS 20 configures multiple subframes for the terminal T2 to perform uplink beamforming training, where the terminal T2 uses itself in the first and second symbols of the subframe 4.
  • the antenna sector 4 repeatedly transmits the same uplink information and side link information as before.
  • the terminal T2 repeatedly transmits the uplink information and the side link information 4 times in each antenna sector of its own, and each antenna sector of the base station 20 repeatedly receives the uplink information 4 times, and the base station 20 obtains 16 groups in total.
  • the base station 20 determines that the best group is UR2-2, that is, for the uplink beam transmission (antenna sector level) transmitted
  • the base station 20 notifies the terminal T3 on the subframe in which the side link information is transmitted by the side link beamforming training by using the downlink physical control signaling or the system information or the upper layer signaling (for example, RRC signaling), and the receiving side link Information, each antenna sector of the terminal T3 also repeatedly receives 4 side-link information, and a total of 16 sets of different transmit antenna sectors and receive antenna sectors are obtained, that is, SR1- 1, SR1-2...SR4-3, SR4-4, according to comparative analysis, for example: based on the received power or the signal to interference and noise ratio (SINR) and other factors for comparative analysis, the terminal T3 determines that the best group is SR4-3, That is, for the side link beam transmission (antenna sector level) transmitted by the terminal T2, the terminal T2 transmits using the sector 4, and the terminal T3 receives the best effect using the sector 3.
  • SINR signal to interference and noise ratio
  • the terminal T3 will train the beamforming.
  • the result is directly fed back to the terminal T2 through the edge link, or the beamforming training result is first fed back to the base station 20, and the base station 20 decides to feed back to the terminal T2. Since the terminals are usually close to each other and the relative mobility is relatively small, the link is more stable than the uplink and downlink. If the terminal T2 transmits using the sector 4, the terminal T3 receives the most effect using the sector 3.
  • the principle of channel reciprocity can be used to infer that the terminal T3 is transmitted using the sector 3, and the effect of the terminal T2 receiving using the sector 4 is also optimal.
  • the terminal T3 may also decode the receiving side link information by using the downlink physical control signaling of the base station 20 or the indication of system information or upper layer signaling (for example, RRC signaling).
  • the terminal T3 can not only learn the information about the physical side link channel for the side link beamforming training, but also detect the physical uplink channel of the uplink information sent by the terminal T2, specifically:
  • the terminal T3 obtains the uplink scheduling information of the terminal T2 (for example, the RB that transmits the uplink data, and the uplink scheduling information such as the MCS used) by the scheduling of the base station 20.
  • the uplink scheduling information of the terminal T2 for example, the RB that transmits the uplink data, and the uplink scheduling information such as the MCS used
  • the terminal T3 obtains the received energy information from the terminal T2 on the uplink channel on which the terminal T2 transmits the uplink information according to the scheduling information.
  • the terminal T3 combines the received energy of the side link information sent from the terminal T2 obtained on the side link channel, thereby obtaining the energy of the entire system bandwidth.
  • the channel information is used for side link beamforming training.
  • the embodiment of the present application may also combine the uplink beam training forming training and the side link beamforming training with the edge link synchronization process or the edge link discovery process.
  • the second time-frequency resource for transmitting the side link information to the terminal T3 configured by the terminal T2 is configured by the network side device for the purpose of the edge link synchronization.
  • the side link information transmitted by the terminal T2 on the SSCH is the Sidelink Synchronization Signal (SLSS), and the terminal T3 receives the SLSS according to itself. Demand, choose whether to synchronize feedback.
  • step 200 the terminal T2 sends the SLSS information to the terminal T3 while transmitting the UL information to the base station BS20.
  • Step 201 The terminal T3 decodes the SLSS correctly, and obtains the result of the side link BFT (Beamform Training) with T2, that is, the transmission and reception of the edge link communication between the terminal T2 and the terminal T3, and the terminal T2 can be known.
  • the best transmitting antenna sector and the terminal T3 optimal receiving antenna sector can also be inferred from the channel dissimilarity principle that the optimal transmitting antenna sector terminal T2 of the terminal T3 is the best receiving antenna sector.
  • step 202 the base station 20 receives the uplink information and obtains an uplink BFT result with the terminal T2.
  • Step 203 The terminal T3 and the base station 20 have completed the uplink beamforming training, that is, the terminal T3 and the base station 20 have already learned the best antenna configuration for transmitting and receiving on the uplink, and the terminal T3 transmits the terminal to the base station 20. Side link BFT results for T2.
  • Step 204 The base station 20 receives the edge link BFT result of the terminal T3 for the terminal T2, performs authentication and authorization, and determines whether the terminal T2 and the terminal T3 are allowed to communicate.
  • Step 205 the downlink beamforming training has been completed at the base station 20 and the terminal T2, that is, the base station 20 and the terminal T2 have learned the best antenna configuration for transmitting and receiving on the downlink, and the base station 20 transmits the terminal to the terminal T2.
  • the side link BFT result of the terminal T2 fed back by T3 informs the terminal T2.
  • step 206 the terminal T2 receives the edge link BFT result fed back by the terminal T3.
  • the terminal T2 and the terminal T3 have obtained the SL Grant (edge link transmission permission, ie, resource configuration information) of the base station 20, or the terminal T2 and the terminal T3 are in the out-of-band (in-band) of the coverage, or the terminal T2 and terminal T3 communicate in the case of Out-of-Coverage.
  • the terminal T2 transmits the SL control and/or the SL data to the terminal T3 using the directional antenna sector in accordance with the BFT result fed back from the previous terminal T3.
  • the terminal T2 may perform a Sillet Link Beam Refinement with the terminal T3. That is, by continuing to use a smaller angle, more directional beam for training within a particular antenna sector for better transmission quality.
  • the terminal can complete the side link synchronization while performing the uplink beamforming training and the side link beamforming training, thereby further saving signaling resources and improving communication efficiency.
  • the network side device Based on the purpose of the edge link discovery, the network side device configures the second time-frequency resource of the side link information to the terminal T3 configured by the terminal T2.
  • the side link information transmitted by the terminal T2 on the PSDCH is a side link discovery message (Discovery Message).
  • the terminal T3 After receiving the discovery message, the terminal T3 selects whether to perform discovery feedback according to its own needs.
  • step 300 the terminal T2 sends the SL Discovery information to the terminal T3 while transmitting the UL information to the base station 20.
  • Step 301 The terminal T3 decodes the SL Discovery information correctly, finds the terminal T2, and obtains the edge link BFT result with the terminal T2, that is, the transmission and reception of the edge link communication between the terminal T2 and the terminal T3, and the terminal T2 can be known.
  • the best transmitting antenna sector and the best receiving antenna sector of the terminal T3 can also be inferred from the principle of mutuality, the optimal transmitting antenna sector of the terminal T3 and the optimal receiving antenna sector of the terminal T2.
  • step 302 the base station 20 receives the uplink information and obtains an uplink BFT result with the terminal T2.
  • Step 303 The terminal T3 and the base station 20 have completed the uplink beamforming training, that is, the terminal T3 and the base station 20 have obtained the best antenna configuration for transmitting and receiving on the uplink, and the terminal T3 sends the target to the base station 20.
  • the discovery response of the terminal T2 (Discovery Response) and the BFT result is carried in the discovery response.
  • Step 304 The base station 20 receives the discovery response of the terminal T3 for the terminal T2, and performs authentication and authorization.
  • Step 305 the downlink beamforming training has been completed at the base station 20 and the terminal T2, that is, the base station 20 and the terminal T2 have learned the best antenna configuration for transmitting and receiving on the downlink, and the base station 20 sends the target to the terminal T2.
  • the discovery confirmation (Discovery Confirm) of the terminal T3 informs the terminal T2 of the side link BFT result of the terminal T2 fed back by the terminal T3.
  • Step 306 the terminal T2 receives the discovery confirmation of the base station 20, learns the discovery response of the terminal T3, and the BFT result fed back by the terminal T3.
  • the terminal T2 and the terminal T3 have obtained the SL Grant (edge link transmission permission, ie, resource configuration information) of the base station 20, or the terminal T2 and the terminal T3 are in the out-of-band (in-band) of the coverage, or the terminal T2 and terminal T3 communicate in the case of Out-of-Coverage.
  • the terminal T2 transmits the SL control and/or the SL data to the terminal T3 using the directional antenna sector in accordance with the BFT result fed back by the previous terminal T3.
  • the terminal T2 may perform a Sidelink Beam Refinement with the terminal T3, that is, by using a specific antenna fan. In the area, continue to use a smaller angle, more oriented beam for training to achieve better transmission quality.
  • the terminal can complete the side link synchronization while performing the uplink beamforming training and the side link beamforming training, thereby further saving signaling resources and improving communication efficiency.
  • the two processes are combined, and the network side device is a second time-frequency resource configured by the terminal to transmit side link information to another terminal.
  • the side link information transmitted by the terminal on the specific channel is the SLSS and the edge link discovery message, and the other terminal selects whether to perform the SLSS and the edge link discovery message according to the needs of the user. Synchronize and/or discover feedback.
  • the detailed implementation process is similar to the above two embodiments, and details are not described herein again.
  • the two terminals have completed edge link synchronization, for example, in an In-Coverage scenario, when accessing the network, all terminals complete synchronization according to the indication of the base station, or Other terminals send synchronization information to complete the synchronization process.
  • the terminal performs beamforming training of the edge link based on the existing uplink and downlink beam training process, and does not need to use new time-frequency resources for beamforming training of the edge link, further It is also possible to perform side link synchronization and side link discovery while performing uplink beamforming training and side link beamforming training, which saves signaling resources and improves communication efficiency.
  • each solution of the communication method between the terminal and the terminal provided by the embodiment of the present application is introduced from the perspective of the interaction between the network elements and the network elements.
  • each network element such as a terminal, a base station, a control node, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in 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 to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • FIG. 10 is a schematic diagram showing a possible structure of a network side device involved in the above embodiment.
  • the network side device may be the base station 20 as shown in FIG. 1, or may be other devices having similar functions.
  • the network device includes:
  • a controller/processor 402 configured to configure, for the terminal, a first time-frequency resource for transmitting uplink information and a second time-frequency resource for transmitting side link information; the first time-frequency resource and the second Time-frequency resources do not overlap;
  • the transceiver 401 is configured to send an indication message to the terminal, where the indication message carries the first time-frequency resource and the second time-frequency resource;
  • the transceiver 401 is further configured to receive uplink information that is sent to the terminal by the terminal for performing uplink beam training on the first time-frequency resource, where the edge link information is that the terminal is in the first time-frequency. Information transmitted on the resource for performing side link beam training. In an implementation manner, the transceiver 401 receives the side link information transmitted by the terminal to another terminal, and receives the uplink beam training sent by the terminal to the first time-frequency resource. Uplink information;
  • the base station may further include an antenna transceiver unit at 400, which may be used to support sending and receiving information between the network device and the terminal in the foregoing embodiment, or to support the network device and other network devices. Send and receive information between.
  • the antenna transceiver unit 400 can be built in the transceiver 401 of the base station; or can be placed outside the transceiver 401 of the base station, for example, a remote radio frequency module.
  • the controller/processor 402 can be used to perform various functions for configuring resources for a terminal.
  • the uplink signal from the terminal is transmitted via the antenna transceiver unit 400, the transceiver 401 performs reception and mediation, and is further processed by the controller/processor 402 to recover the service data and the message transmitted by the terminal. Order information.
  • traffic data and signaling messages are processed by controller/processor 402 and mediated by transceiver 401 to generate downlink signals for transmission to the terminal.
  • the controller/processor 402 is further configured to perform resource configuration in the communication method as described in the foregoing embodiment, and configure an uplink transmission resource and an edge link transmission resource to at least one terminal of the at least one pair of links, at least one The edge link transmission resource is configured for the terminal as the receiving end in the link, and optionally, the detection signal sending resource may be configured for the cellular terminal.
  • the controller/processor 402 can also be used to perform the processes involved in the base station of FIG. 2, FIG. 8, or FIG. 9 and/or other processes for the techniques described herein.
  • the base station may also include a memory 403 that may be used to store program codes and data of the base station.
  • the base station may further include a communication unit 404 for supporting the base station to communicate with other network entities. For example, it is used to support communication between a base station and other communication network entities shown in FIG. 1, such as control node 60 and the like.
  • Figure 10 only shows a simplified design of the base station.
  • the base station may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present application are within the scope of the present application.
  • Figure 11 shows a simplified schematic diagram of one possible design structure of the terminal involved in the above embodiment, which may be one of the terminals T4, T5, T6, T7 as shown in Figure 1.
  • the terminal includes a transceiver 501, a controller/processor 502, and may also include a memory 503 and a modem processor 504.
  • the transceiver 501 is configured to receive an indication message of the network side device, where the indication message indicates that the network side device configures a first time-frequency resource for transmitting uplink information and a second time-frequency resource for transmitting edge link information.
  • the first time-frequency resource does not overlap with the second time-frequency resource;
  • the controller/processor 502 is configured to instruct the transceiver 501 to transmit uplink information for performing uplink beam training to the network side device on the first time-frequency resource, and at the same time, instruct the transceiver 501 to be in the second
  • the side link information for performing side link beam training is transmitted to another terminal on the time-frequency resource.
  • the terminal may further include an antenna transceiver unit 500.
  • the antenna transceiver unit 500 may be integrated in the transceiver 501 or may be disposed outside the transceiver 501.
  • the uplink information is transmitted to the base station described in the above embodiment via the antenna transceiver unit 500.
  • the antenna transceiver unit 500 receives the downlink information transmitted by the base station in the above embodiment.
  • Transceiver 501 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from antenna transceiving unit 500 and provides input samples.
  • encoder 5041 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 5042 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 5044 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 5043 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the terminal.
  • Encoder 5041, modulator 5042, demodulator 5044, and decoder 5043 may be implemented by a composite modem processor 504. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems).
  • the controller/processor 502 controls and manages the actions of the terminal for performing the processing performed by the terminal in the above embodiment.
  • the controller/processor 502 is configured to support the terminal in performing the content related to terminal processing in FIG. 2 or FIG. 8 or FIG.
  • the memory 503 is used to store program codes and data for the terminal.
  • Fig. 12 is a diagram showing the control node involved in the above embodiment.
  • the control node may be the control node 60 shown in FIG.
  • the control node may include a controller processor 601, a memory 602, and a communication unit 603.
  • the controller/processor 601 can be used to coordinate resource management and configuration between multiple base stations, can be used to perform resource configuration in the foregoing embodiment, and can perform frequency resource multiplexing and decision between communication links. Wait.
  • Memory 602 can be used to store program code and data for the control node.
  • the communication unit 606 is configured to support the control node to communicate with the base station, for example, to send information of the configured resource to the base station.
  • the network side device described in the foregoing embodiment of the present application may be the base station as shown in FIG. 10 or the control node as described in FIG.
  • the controller/processor for performing the above base station, terminal, base station or control node of the present application may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and the field may be Programming gate array (FPGA) or other programmable logic device, transistor logic device, hardware
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA Programming gate array
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage well known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the terminal.
  • the processor and the storage medium can also exist as discrete components in the terminal.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

Abstract

本申请涉及无线通信技术领域，提供了一种终端与终端之间通信的方法、网络侧设备和终端。该方法公开了网络侧设备为终端分配传输上行信息和边链路信息的时频资源。所述终端在所述时频资源上，在所述时域资源范围中的同一时刻向所述网络侧设备传输用于进行上行波束训练的上行信息，并向另一终端传输用于进行边链路波束训练传的边链路信息。通过本实施例提供的方案，终端在基于传统上下行波束成形训练流程的基础上，不额外使用新的时频资源进行边链路的波束成形训练。

Description

一种终端与终端之间通信的方法、网络侧设备和终端 技术领域
本申请涉及无线通信技术领域，尤其涉及一种终端与终端之间通信的方法、网络侧设备和终端。
背景技术
随着无线通信技术的发展以及智能终端的普及，无线蜂窝网络中终端的数量正处于爆发性增长阶段，无线通信系统支持的业务也从最初的语音、短信，发展到现在支持无线高速数据通信。与此同时，全世界范围内的无线连接数量正在经历持续地高速增长，各种新型无线业务类型也大量涌现，例如物联网、虚拟现实(Virtual Reality，VR)等，这些都对下一代无线通信系统提出了更高的要求。
终端与终端之间的通信包括D2D(Device to Device,设备与设备)，M2M(机器与机器，Machine to Machine)，UE cooperation(UE协作)等通信模式。终端之间的直接通信能够分担无线蜂窝网络繁重的网络负荷、补充现有的蜂窝网络架构并带来新的利润收入模式。以D2D通信模式为例，在D2D通信模式下，用户数据直接在终端之间传输，避免了蜂窝通信中用户数据经过网络中转传输，由此产生链路增益；另外，D2D用户之间以及D2D与蜂窝之间的资源可以复用，由此可产生资源复用增益。通过链路增益和资源复用增益则可提高无线频谱资源的效率，进而提高整体网络的吞吐量。波束成形(beam forming)是天线技术与数字信号处理技术的结合，目的用于定向信号传输或接收。
收发两端的终端完成波束成形训练需要根据收发两端的天线数目来确定时间，天线越多完成波束成形训练的时间越长，在基站和终端之间需要进行波束训练终端与终端之间也需要进行波束成形训练的情况下，需要占用信道资源较多，在终端数目较多的情况下，会降低系统的频谱使用率。
发明内容
本申请描述了一种终端与终端之间通信方法、装置和系统。
一方面，本申请实施例提供一种终端与终端之间通信的方法，包括：网络侧设备调度终端同时进行上行波束训练和边链路波束训练，首先为终端配置用于传输上行信息的第一时频资源和用于传输边链路(sidelink，SL)信息的第二时频资源；终端接收到网络侧设备的指示信息后，在第一时频资源上向网络侧设备传输用于进行上行波束训练的上行信息，同时，在第二时频资源上向另一终端传输用于进行边链路波束成形训练的边链路信息。
一种可能的设计中，基于终端与终端之间进行同步的目的，终端向另一终端传输边链路信息的第二时频资源为边链路同步信道(Sidelink Synchronization Channel，SSCH)。所述终端在该在边链路同步信道上传输的边链路信息为边链路同步信息(Sidelink Synchronization Signal，SLSS)，所述另一终端接收所述同步信息后，根据自身情况选择是否与所述终端的同步。
另一个可能的设计中，基于终端与终端之间进行发现的目的，终端向另一终端传输边链路信息的第二时频资源为物理边链路发现信道(Physical Sidelink Discovery Channel，PSDCH)， 所述终端在该物理边链路发现信道上传输的边链路信息为边链路发现消息(Discovery Message)，所述另一终端接收发现消息后，根据自身需求，选择是否进行发现反馈。
再一种可能的设计中，基于终端与终端之间进行同步和发现的目的，终端向另一终端传输边链路信息的第二时频资源为边链路特定信道，所述终端在该在边链路特定信道上传输的边链路信息为边链路同步信息和边链路发现消息，所述另一终端接收所述同步信息和发现消息后，根据自身情况选择是否与所述终端的同步和进行发现反馈。
上述终端与终端之间的发现过程基于终端和另一终端已经完成同步之后，根据需求，选择是否向对端发送发现消息。
通过本实施例提供的技术方案，终端基于现有的上行波束训练流程的同时进行边链路的波束成形训练，不需要额外使用新的时频资源进行边链路波束成形训练的同时，完成终端与终端之间的同步或终端与终端之间的发现，或者同时完成终端与终端之间的同步和发现，提高了终端与终端之间的通信效率。
另一方面，本申请实施例提供了网络侧设备，该网络侧设备可以是一种基站，也可以是一种控制节点。
一种实现方式中，网络设备包括：
处理器，用于为终端配置用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与第二时频资源不重叠；
收发器，用于向所述终端发送指示消息，该指示消息中携带有所述第一时频资源与第二时频资源；
所述收发器还用于接收所述终端在第一时频资源上向其发送的用于进行上行波束训练的上行信息；所述边链路信息为所述终端在所述第一时频资源上传输的用于进行边链路波束训练的边链路信息。
可选的，所述收发器接收所述终端在第一时频资源上向其发送的用于进行上行波束训练的上行信息，是在所述终端向另一终端传输边链路信息的同时进行的。
另一方面，本申请实施例提供了一种基站，该基站具有实现上述方法实际中基站行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，基站的结构中包括处理器和收发器，所述处理器被配置为支持基站执行上述方法中相应的功能。所述收发器用于支持基站与终端之间的通信，向终端发送上述方法中所涉及的信息或者信令，接收基站所发送的信息或指令。所述基站还可以包括存储器，所述存储器用于与处理器耦合，其保存基站必要的程序指令和数据。
又一方面，本申请实施例提供了一种终端，该终端具有实现上述方法设计中终端行为的功能。所述功能可以通过硬件实现，终端的结构中包括收发器和处理器。也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。所述模块可以是软件和/或硬件。
一种实现方式中，所述终端包括：
收发器，用于接收网络侧设备的指示消息；
处理器，所述处理器用于根据所述指示消息获取所述网络侧设备为所述终端配置的用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与第二时频资源不重叠；
所述收发器还用于在所述处理器获取的第一时频资源上向所述网络侧设备传输用于进行上行波束训练的上行信息，同时，在所述处理器获取的第二时频资源上向所述另一终端传输用于进行边链路波束训练的边链路信息。
又一方面，本申请实施例提供了一种控制节点，可以包括控制器/处理器，存储器以及通信单元。所述控制器/处理器可以用于协调多个基站之间的资源管理和配置，可以用于执行上述实施例描述的为终端配置时频资源方法。存储器可以用于存储控制节点的程序代码和数据。所述通信单元，用于支持该控制节点与基站进行通信，譬如将所配置的资源的信息发送给基站。
又一方面，本申请实施例提供了一种通信系统，该系统包括上述方面所述的基站和终端，所述终端包括至少两个D2D或M2M终端或cooperation终端。可选地，还可以包括上述实施例中的控制节点。
再一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述基站所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述终端所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
通过本实施例提供的技术方案，网络侧设备为终端分别配置用于上行波束成形训练用的第一时频资源和用于边链路波束成形训练用的第二时频资源，终端可以基于现有的上行波束训练流程的同时进行边链路波束成形训练，不需要额外使用新的时频资源即可进行终端与终端之间通信的波束成形训练，极大程度的节约了时频资源，提高了终端与终端之间进行通信的效率。
附图说明
为了更清楚地说明本申请实施例，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1为本申请实施例提供的通信系统的再一结构示意图；
图2为本申请实施例提供的终端与终端之间通信的方法实施例一的流程示意图；
图3为本申请实施例中时频资源分配的一个示意图；
图4为本申请实施例中上行波束成形训练和边链路波束成形训练的一个示意图；
图5为本申请实施例中上行波束成形训练和边链路波束成形训练的又一示意图；
图6为本申请实施例中时频资源分配的又一示意图；
图7为本申请实施例中上行波束成形训练和边链路波束成形训练的再一示意图；
图8为本申请实施例中上行波束成形训练和边链路波束成形训练与终端与终端之间进行同步流程结合的流程示意图；
图9为本申请实施例中上行波束成形训练和边链路波束成形训练与终端与终端之间进行发现流程结合的流程示意图；
图10为本申请实施例提供的一种基站的结构示意图；
图11为本申请实施例提供的一种终端的结构示意图；
图12为本申请实施例提供的一种控制节点的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
为了解决现有技术中终端进行上下行波束成形训练和边链路波速成形训练时，时频资源利用率低的问题，本申请实施例基于图1所示的通信系统中提出了一种解决方案，用以提高终端进行波束成形训练效率。
本申请提供的终端与终端之间通信的方法可应用于高频通信，也可应用于低频通信。本申请实施例中的高频可以包括高频HF3-30MHZ，甚高频VHF 30-300MHZ，特高频UHF300-3GHZ和超高频SHF 3G-AGHZ，随着通信技术的发展，A的取值范围可以更大。
本申请实施例提供了一种通信系统。该通信系统至少包括至少一个网络设备和多个终端(Terminal)。本申请实施例中的网络设备是一种部署在无线接入网中用以为终端提供无线通信功能的装置。该网络设备可以是接入网节点、具有接入功能的控制器或者基站等。所述基站可以包括各种形式的宏基站，微基站(也称为小站)，中继站，接入点等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如，在LTE系统中，称为演进的节点B(evolved NodeB，eNB或者eNodeB)，在第三代(3rd generation，3G)系统中，称为节点B(Node B)等。为方便描述，下面的实施例中，以基站为例来进行介绍。所述通信系统100中多个终端包括至少两个可以互相之间进行通信的终端，还包括可以用于蜂窝通信的终端。
蜂窝通信是指终端和基站之间进行的通信。例如，在图1中终端T1，终端T2，终端T3，终端T4通过接入链路(access link)与基站20进行蜂窝通信。在终端和基站之间进行蜂窝通信之前，通常需要先进行上下行波束成形训练。
终端与终端之间的通信是指两个终端之间直接进行的通信，以D2D通信为例，进行D2D通信的终端可以称为D2D终端，两个进行D2D通信的终端之间的链路可以称为一对D2D链路，一对D2D链路中的两个终端可以互为接收端和发送端。在一次传输中，其中一个终端可以为发送端，另一个终端可以为接收端。若所述两个终端都支持同时收发功能，则所述每个D2D终端可以同时既为发送端也为接收端。
当然，所述终端也可以具有蜂窝通信功能，蜂窝终端也可以具有与其它终端通信的功能。例如，图1中的终端T2-T4既可以进行蜂窝通信也可以进行D2D通信。
在本实施例的通信系统100中，多个终端可以都位于同一个基站的覆盖之下(In-Coverage)，所述多个终端可以由同一个基站服务，在同一个基站覆盖之下的终端为In-Coverage终端。例如，在图1中，终端T1-终端T4都位于BS20的覆盖下，由BS20服务，终端T2和终端T3可以称为In-Coverage终端。而终端T5～终端T7在基站覆盖之外(Out-of-Coverage)，终端T6和终端T7称为Out-of-Coverage终端。
在其他的实现方式中，通信系统100中所述多个终端也可以位于不同的基站覆盖之下，即不同的终端和蜂窝终端也可以由不同的基站服务。
在本申请实施例中，所述通信系统100包括但不限于：窄带物联网系统(英文：Narrow Band-Internet of Things，简称：NB-IoT)、全球移动通信系统(英文：Global System for Mobile Communications，简称：GSM)、增强型数据速率GSM演进系统(英文：Enhanced Data rate for GSM Evolution，简称：EDGE)、宽带码分多址系统(英文：Wideband Code Division Multiple Access，简称：WCDMA)、码分多址2000系统(英文：Code Division Multiple Access，简称：CDMA2000)、时分同步码分多址系统(英文：Time Division-Synchronization Code Division  Multiple Access，简称：TD-SCDMA)，长期演进系统(英文：Long Term Evolution，简称：LTE)、下一代5G移动通信系统的三大应用场景eMBB，URLLC和eMTC或者将来出现的新的通信系统。只要该通信系统包括蜂窝通信和终端与终端之间的通信，都适用本申请实施例提供的技术方案。
本申请实施例描述的系统架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例中，所述控制节点连接一个或多个基站，可以对系统中的资源进行统一调度，可以给终端配置资源，进行资源复用决策，或者干扰协调等。当然，在实际应用中，此控制节点也可以与基站集成在一起。在图1所示的通信系统中，所述控制节点可以连接基站，并为所述基站覆盖下的多个终端和蜂窝终端配置资源。例如，所述基站可以为UMTS系统中的Node B，所述控制节点可以为网络控制器。又例如，所述基站可以为小站，则所述控制节点可以为覆盖所述小站的宏基站。再例如，所述控制节点可以为无线网络跨制式协同控制器等，基站为无线网络中的基站，在本申请实施例中不作限定说明。
本申请实施例中所涉及到的终端可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。所述终端也可以称为移动台(mobile station，简称MS)，终端设备(terminal equipment)，还可以包括用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication,MTC)终端等。为方便描述，本申请所有实施例中，上面提到的设备统称为终端。
需要说明的是，图1所示的通信系统100中所包含的终端的数量和类型仅仅是一种举例，本申请实施例也并不限制于此。此外，在如图1所示的通信系统100中，尽管示出了基站BS20，以及多个终端，但所述通信系统100可以并不限于包括所述基站和终端，譬如还可以包括核心网设备或用于承载虚拟化网络功能的设备等，这些对于本领域普通技术人员而言是显而易见的，在此不一一详述。
另外，需要说明的是，本申请实施例不仅适用于移动蜂窝网通信系统，对于其他通信系统，例如WLAN(wireless local area network，无线局域网)系统也同样适用。
在描述本申请实施例之前，首先对本申请实施例涉及的时频资源做简单的介绍，如下：
在无线通信网络系统中，通常在频域上定义子载波(subcarrier)为基本单位，若干个子载波组成为1个RB(Resource Block，资源块)；在时域上定义符号(symbol)为基本单位，若干个符号组成一个子帧(sub frame)。定义用于下一代无线通信网络用于传输的一个子帧包含N symb个符号，频域总带宽由N RB个RB组成，一个RB的大小为
Figure PCTCN2018073446-appb-000001
即一个RB由
Figure PCTCN2018073446-appb-000002
个子载波组成。定义用于上行传输的总带宽为
Figure PCTCN2018073446-appb-000003
定义用于D2D通信的总带宽为
Figure PCTCN2018073446-appb-000004
Figure PCTCN2018073446-appb-000005
值得注意的是，
Figure PCTCN2018073446-appb-000006
和
Figure PCTCN2018073446-appb-000007
当中可能至少存在0个连续或离散的保护频带 (Guard Band)，在所述Guard Band中，发送端没有发送任何信息。
参见图2，为本申请实施例提供一种终端与终端之间通信的方法流程示意图。
本实施例中，网络侧设备(例如图1中通信系统100中的基站20和控制节点60)要调度终端(例如，在上述基站或控制节点各自覆盖范围内的终端)同时进行上行波束成形训练和边链路波束成形训练。
步骤100，网络侧设备为终端配置用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源，并且通过指示消息将其配置的资源通知给终端；该第一时频资源与第二时频资源不重叠，也即一部分频域资源用于传输上行信息，另一部分频域资源用于与其它终端之间传输信息，也即边链路信息。
具体的，参见图3，以网络侧设备为终端配置时间长度为一个子帧，频域为整个带宽的第一时频资源为例进行说明。网络侧设备为终端配置的用于传输上行信息以进行上行波束成形训练的第一时频资源表示为
Figure PCTCN2018073446-appb-000008
Figure PCTCN2018073446-appb-000009
m为整数；而第二时频资源表示为
Figure PCTCN2018073446-appb-000010
系统可用频域总带宽则为
Figure PCTCN2018073446-appb-000011
步骤101，终端接收网络侧设备的指示消息，该指示消息指示网络侧设备为其配置了用于传输上行信息的第一时频资源
Figure PCTCN2018073446-appb-000012
和用于传输边链路信息的第二时频资源
Figure PCTCN2018073446-appb-000013
步骤102，终端在所述第一时频资源
Figure PCTCN2018073446-appb-000014
上向所述网络侧设备传输用于进行上行波束训练的上行信息，同时，在所述第二时频资源
Figure PCTCN2018073446-appb-000015
上向另一终端传输用于进行边链路波束成形训练的边链路信息。
这里的“同时”是指在同一个子帧中的某个符号上，终端既向网络侧设备传输上行信息又向另一终端传输边链路信息。对应于图3，“同时”是配置的一个子帧中的N symb个符号中的一个符号。例如I＝0时的第一个符号，在这个符号内，该终端既向网络侧设备传输上行信息又向另一终端传输边链路信息。
通过本实施例提供的技术方案，终端基于现有的上下行波束训练流程的同时进行边链路的波束成形训练，不需要额外使用新的时频资源进行边链路的波束成形训练。
具体实现中，终端向网络侧设备传输上行信息和向另一终端传输边链路信息是通过各自的天线收发单元进行的。如图4所示，假设终端的天线收发单元的总数量为X，其中X的取值可以是2×2的天线矩阵，也可以是4×4的天线矩阵，也可以是8×8的天线矩阵等等；网络侧设备的天线收发单元的总数量为Y，其中Y的取值可以是4×4的天线矩阵，也可以是8×8 的天线矩阵，或者也可以是32×32的天线矩阵等等；另一终端的天线收发单元的总数量为Z，其中Z的取值可以是2×2的天线矩阵，也可以是4×4的天线矩阵，也可以是8×8的天线矩阵等等；网络侧设备通过下行物理控制信令(还可以通过系统信息或RRC信令等其他上层信令)调度终端在特定子帧(对应图3中的N symb)的第一时频资源(对应图3中的
Figure PCTCN2018073446-appb-000016
)发送上行信息进行上行波束成形训练，以及在所述特定子帧的第二时频资源(对应图3中的
Figure PCTCN2018073446-appb-000017
)发送边链路信息进行边链路波束成形训练，具体如下：
在第I个时域单位中，终端利用其第x个天线收发单元，在所述第一时频资源
Figure PCTCN2018073446-appb-000018
上向网络侧设备的第y个天线收发单元传输上行信息以进行上行波束训练；同时，在所述第二时频资源
Figure PCTCN2018073446-appb-000019
上向另一终端的第z个天线收发单元传输边链路信息以进行边链路波束训练；其中x∈[1,X]，y∈[1,Y]，z∈[1,Z]，I∈[1,N]，N为网络侧设备为终端配置的用于传输上行信息和边链路信息的时域单位的总数量。
在一个可能的实施例中，终端向网络侧设备传输上行信息的第一时频资源
Figure PCTCN2018073446-appb-000020
为物理随机信道(Physical Random Access Channel，PRACH)，在PRACH上传输的上行信息为随机接入信息(Random Access Message，RAM)。
在另一个可能的实施例中，终端向网络侧设备传输上行信息的第一时频资源
Figure PCTCN2018073446-appb-000021
为物理上行控制信道(Physical Uplink Control Channel，PUCCH)，在PUCCH上传输的上行信息为上行控制信息。
终端在其X个天线收发单元上向所述网络侧设备的Y个天线收发单元发送上行信息，并且向所述另一终端的Z个天线收发单元发送边链路信息，完成与所述网络侧设备的上行波束成形训练和与另一终端的边链路波束成形训练。
需要说明的是，因为不同的通信设备的传输能力不同，即其拥有的天线收发单元的个数不同，因此网络侧会设备根据终端接入网络时获知终端的传输能力，并按照不同中终端的传输能力来指示终端重复发送多少次上行信息和边链路信息。例如终端的天线收发单元的个数X＝4，而网络侧设备的天线收发单元的个数Y＝16，另一终端的天线收发单元的个数Z＝4，则网络侧设备可以配置终端的每一个天线收发单元都重复发送16次上行信息，该16次上行信息分别发送给网络侧设备的16个天线收发单元，并且每一个天线收发单元都发送4次边链路信息，该4次边链路信息分别发送给另一终端的4个天线收发单元。
网络侧设备的Y个天线收发单元接收到所述终端的X个天线收发单元发送的上行信息后，从所述X×Y组不同天线收发单元中选择一组最优的天线收发单元作为上行波束成形训练结果下发至所述终端。
而所述另一终端的Z个天线收发单元接收到所述终端的X个天线收发单元发送的边链路信息后，获得X×Z组不同天线收发单元的边链路波束成形训练数据，并从所述X×Z组不 同天线收发单元的边链路波束成形训练数据中确定一组最优的天线收发单元，并将该波束训练结果上报至所述网络侧设备或者直接发送至所述终端。
本申请实施例在进行波束成形训练时，可以先以天线扇区级别(sector-level)进行训练，可选地，在确定扇区后，再进行波束级别(beam-level)训练，缩小特定方向的角度，进一步获得增益；也可以直接进行波束级别(beam-level)训练。本申请实施例中的波束成形训练主要以天线扇区级别为例进行说明，不限定必须使用哪种级别的波束成形训练。
具体的，以图1中，基站20和其覆盖下的终端T2与BS20进行上行波束成形训练和与终端T3进行边链路成形训练，并在此过程中完成边链路同步和边链路发现为例进行说明。如图5所示，假设基站20和终端T2、终端T3都支持4个天线扇区的波束切换。
如图6所示，用于通信的无线帧(Radio Frame)包含80个子帧，每个子帧包含14个符号，即N symb＝14。基站20在子帧0(subframe 0)和子帧1上发送DL Sweeping子帧进行下行波束成形训练并发送下行信息，该下行信息包含下行控制信息、同步信号、广播信号、扇区标示、波束标示等至少一种。基站20调度终端T2在子帧3(subframe3)进行上行波束成形训练，终端T2在子帧3的第一个符号(对应图3中的第I＝0符号)使用自身天线扇区1发送上行信息和边链路信息，在本实施例中上行信息在频域(对应图3中的
Figure PCTCN2018073446-appb-000022
和
Figure PCTCN2018073446-appb-000023
)上包含在PRACH发送的随机接入信息和在PUCCH发送的上行控制信息，例如，调度请求(Scheduling Request，SR)等至少一种。
如图7所示，终端T2的天线支持4个扇区，则终端T2在第二个、第三个和第四个符号均使用自身天线扇区1重复发送与之前相同的上行信息和边链路信息。终端T2在随后的4个符号使用自身天线扇区2重复发送与之前相同的上行信息和边链路信息，同理，终端T2分别以自身天线扇区3和4重复发送4次相同的上行信息和边链路信息。当一个子帧不足以完成整个波束成形训练的时候，BS20会配置多个子帧用于终端T2进行上行波束成形训练，在这里，终端T2会在子帧4第一个和第二个符号使用自身天线扇区4再重复发送与之前相同的上行信息和边链路信息。
如此，终端T2在其自身每个天线扇区都重复发送4次上行信息和边链路信息，基站20的每个天线扇区也重复接收了4次上行信息，基站20一共便获得了16组不同发送天线扇区和接收天线扇区的上行波束成形训练数据，即UR1-1、UR1-2…UR4-3、UR4-4，根据对比分析，例如：根据接收功率或者是信噪比(Signal to Interference and Noise Ratio,SINR)等因素进行对比分析，基站20确定最好一组为UR2-2，即对于终端T2发送的上行波束传输(天线扇区级别)而言，终端T2使用扇区2发送，基站20使用扇区2接收的效果最佳，最后基站20会将所述波束成形训练结果反馈给终端T2。
基站20通过下行物理控制信令或系统信息或上层信令(例如RRC信令)，通知终端T3在终端T2进行边链路波束成形训练所发送边链路信息的子帧上，接收边链路信息，终端T3的每个天线扇区也都重复接收了4次边链路信息，一共便获得了16组不同发送天线扇区和接收天线扇区的边链路波束成形训练数据，即SR1-1、SR1-2…SR4-3、SR4-4，根据对比分析，例如：根据接收功率或者是信干噪比(SINR)等因素进行对比分析，终端T3确定最好一组为SR4-3，即对于终端T2发送的边链路波束传输(天线扇区级别)而言，终端T2使用扇区4发送，终端 T3使用扇区3接收的效果最佳，最后终端T3会将所述波束成形训练结果通过边链路直接反馈给终端T2，或者将波束成形训练结果先反馈给基站20，由基站20决定再反馈给终端T2。由于终端之间通常距离较近，相对移动性比较小，故此链路相较于上行和下行链路而言更稳定，如果终端T2使用扇区4发送，终端T3使用扇区3接收的效果最佳，可以利用信道互易性的原则推测出，终端T3使用扇区3发送，终端T2使用扇区4接收的效果也是最佳的。
终端T3还可以基站20的下行物理控制信令或系统信息或上层信令(例如RRC信令)的指示，解码接收边链路信息。终端T3不仅可以获知物理边链路信道的有关信息用于边链路波束成形训练，也可以对终端T2发送的上行信息的物理上行信道进行检测，具体地：
终端T3通过基站20的调度，获得终端T2的上行调度信息(例如发送上行数据的RB，所示用的MCS等上行调度信息)。
终端T3根据所述调度信息在终端T2发送上行信息的上行信道上，获得来自终端T2的接收能量信息。
终端T3结合在边链路信道获得的来自终端T2发送的边链路信息的接收能量，进而获得整个系统带宽的能量
Figure PCTCN2018073446-appb-000024
的信道信息用于边链路波束成形训练。
为了进一步节约时频资源，本申请实施例还可以将上行波束训练成形训练和边链路波束成形训练与边链路的同步过程或边链路的发现过程相结合。
基于边链路同步的目的，网络侧设备为终端T2配置的向终端T3传输边链路信息的第二时频资源
Figure PCTCN2018073446-appb-000025
为边链路同步信道(Sidelink Synchronization Channel，SLSCH)，终端T2在该在SSCH上传输的边链路信息为边链路同步信息(Sidelink Synchronization Signal，SLSS)，终端T3接收到SLSS后，根据自身需求，选择是否进行同步反馈。
具体流程如图8所示：
步骤200，终端T2发送SLSS信息给终端T3的同时发送UL信息给基站BS20。
步骤201，终端T3解码正确获得SLSS，并获得与T2的边链路BFT(Beamform Training，波束成形训练)结果，即对于终端T2和终端T3的边链路通信的发送与接收，可以获知终端T2的最佳发送天线扇区和的终端T3最佳接收天线扇区，也可以根据信道互异性原则推断出，终端T3的最佳发送天线扇区终端T2的最佳接收天线扇区。
步骤202，基站20接收上行信息，并获得与终端T2的上行BFT结果。
步骤203，在终端T3和基站20已经完成上行的波束成形训练，即此刻终端T3和基站20已经获知最佳的天线配置来用于在上行发送与接收的基础上，终端T3向基站20发送终端T2的边链路BFT结果。
步骤204，基站20接收到终端T3针对终端T2的边链路BFT结果，进行认证和授权，判断是否允许终端T2和终端T3进行通信。
步骤205，在基站20和终端T2已经完成下行的波束成形训练，即此刻基站20和终端T2已经获知最佳的天线配置来用于在下行发送与接收的基础上，基站20向终端T2发送终端T3所反馈的终端T2的边链路BFT结果告知终端T2。
步骤206，终端T2接收终端T3反馈的边链路BFT结果。
如果终端T2和终端T3已经获得基站20的SL Grant(边链路传输许可，即资源配置信息)，或者终端T2和终端T3在in coverage的out-of-band(带外)情况下，或者终端T2和终端T3在Out-of-Coverage情况下等进行通信。终端T2按照之前终端T3所反馈的BFT结果，使用定向天 线扇区向终端T3发送SL控制和(或)SL数据。
可选地，在步骤207，终端T2向终端T3发送SL控制和(或)SL数据、和(或)发现消息前，终端T2可以与终端T3进行Sildelink Beam Refinement(边链路波束精细训练)，即通过在特定的天线扇区内，继续使用角度更小的，更加定向的波束来进行训练，以获得更好的传输质量。
通过本实施例提供的技术方案，终端可以在进行上行波束成形训练和边链路波束成形训练的同时，完成边链路同步，进一步节约了信令资源，提高了通信效率。
基于边链路发现的目的，网络侧设备为终端T2配置的向终端T3传输边链路信息的第二时频资源
Figure PCTCN2018073446-appb-000026
为如图6所示的物理边链路发现信道(Physical Sidelink Discovery Channel，PSDCH)，终端T2在该PSDCH上传输的边链路信息为边链路发现消息(Discovery Message)。所述终端T3接收所述发现消息后，根据自身需求，选择是否进行发现反馈。
具体流程如图9所示：
步骤300，终端T2发送SL Discovery信息给终端T3的同时发送UL信息给基站20。
步骤301，终端T3解码正确获得SL Discovery信息，发现终端T2，并获得与终端T2的边链路BFT结果，即对于终端T2和终端T3的边链路通信的发送与接收，可以获知终端T2的最佳发送天线扇区和终端T3的最佳接收天线扇区，也可以根据互异性原则推断出，终端T3的最佳发送天线扇区和终端T2的最佳接收天线扇区。
步骤302，基站20接收上行信息，并获得与终端T2的上行BFT结果。
步骤303，在终端T3和基站20已经完成上行的波束成形训练，即此刻终端T3和基站20已经获知最佳的天线配置来用于在上行发送与接收的基础上，终端T3向基站20发送针对终端T2的发现响应(Discovery Response)并将BFT结果携带在发现响应中。
步骤304，基站20接收到终端T3针对终端T2的发现响应，进行认证和授权。
步骤305，在基站20和终端T2已经完成下行的波束成形训练，即此刻基站20和终端T2已经获知最佳的天线配置来用于在下行发送与接收的基础上，基站20向终端T2发送针对终端T3的发现确认(Discovery Confirm)并将终端T3所反馈的终端T2的边链路BFT结果告知终端T2。
步骤306，终端T2接收到基站20的发现确认，获知终端T3的发现响应，以及终端T3反馈的BFT结果。
如果终端T2和终端T3已经获得基站20的SL Grant(边链路传输许可，即资源配置信息)，或者终端T2和终端T3在in coverage的out-of-band(带外)情况下，或者终端T2和终端T3在Out-of-Coverage情况下等进行通信。终端T2按照之前终端T3所反馈的BFT结果，使用定向天线扇区向终端T3发送SL控制和(或)SL数据。可选地，在步骤307，终端T2向终端T3发送SL控制和(或)SL数据前，终端T2可以与终端T3进行边链路波束精细训练(Sidelink Beam Refinement)，即通过在特定的天线扇区内，继续使用角度更小的，更加定向的波束来进行训练，以获得更好的传输质量。
通过本实施例提供的技术方案，终端可以在进行上行波束成形训练和边链路波束成形训练的同时，完成边链路同步，进一步节约了信令资源，提高了通信效率。
基于边链路同步和边链路发现的目的，即将上述两个过程相结合，网络侧设备为终端配置的向另一终端传输边链路信息的第二时频资源
Figure PCTCN2018073446-appb-000027
为边链路特定信道，终端在该在特定信 道上传输的边链路信息为SLSS和边链路发现消息，所述另一终端接收SLSS和边链路发现消息后根据自身需求，选择是否进行同步和/或发现反馈。其详细的实现过程与上述两个实施例类似，在此不再赘述。
需要说明的是，上述边链路发现过程基于两个终端已经完成边链路同步之后，例如在In-Coverage场景中，在接入网络时，所有终端根据基站的指示完成同步，或者通过终端向其它终端发送同步信息完成同步过程。
通过本实施例提供的技术方案，终端基于现有的上下行波束训练流程的同时进行边链路的波束成形训练，不需要额外使用新的时频资源进行边链路的波束成形训练，进一步的，还可以在进行上行波束成形训练和边链路波束成形训练的同时，完成边链路同步和边链路发现，节约了信令资源，提高了通信效率。
上述本申请提供的实施例中，分别从各个网元本身、以及从各个网元之间交互的角度对本申请实施例提供的终端与终端之间进行通信方法的各方案进行了介绍。可以理解的是，各个网元，例如终端、基站，控制节点等为了实现上述功能，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描述的各示例的单元及算法步骤，本申请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申请的范围。
图10示出了上述实施例中所涉及的网络侧设备的一种可能的结构示意图。该网络侧设备可以是如图1中所示的基站20，也可以是具有类似功能的其它设备。
所述网络设备包括：
控制器/处理器402，用于为终端配置用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与所述第二时频资源不重叠；
收发器401，用于向所述终端发送指示消息，该指示消息中携带有所述第一时频资源与所述第二时频资源；
所述收发器401还用于接收所述终端在第一时频资源上向其发送的用于进行上行波束训练的上行信息；所述边链路信息为所述终端在所述第一时频资源上传输的用于进行边链路波束训练的信息。在一种实现方式中，所述收发器401在所述终端向另一终端传输边链路信息的同时，接收所述终端在第一时频资源上向其发送的用于进行上行波束训练的上行信息；
可选的，所述基站还可以包括天线收发单元在400，其可以用于支持网络设备与上述实施例中的所述的终端之间收发信息，或者用于支持该网络设备与其它的网络设备之间收发信息。该天线收发单元400可以内置于基站的收发器401中；也可以置于基站的收发器401外，例如，远端射频模块。
所述控制器/处理器402可以用于执行各种用于为终端配置资源。在上行链路，来自所述终端的上行链路信号经由天线收发单元400发射，收发器401进行接收和调解，并进一步由控制器/处理器402进行处理来恢复终端所发送的业务数据和信令信息。在下行链路上，业务数据和信令消息由控制器/处理器402进行处理，并由收发器401进行调解来产生下行链路信号并发送给终端。所述控制器/处理器402还用于执行如上述实施例描述的通信方法中的资源配置，给至少一对链路中作为发送端的终端配置上行传输资源和边链路传输资源，给至少一对链路 中作为接收端的终端配置边链路传输资源，可选的还可以给所述蜂窝终端配置探测信号发送资源。所述控制器/处理器402还可以用于执行图2、图8或图9中涉及基站的处理过程和/或用于本申请所描述的技术的其他过程。所述基站还可以包括存储器403，可以用于存储基站的程序代码和数据。所述基站还可以包括通信单元404，用于支持基站与其他网络实体进行通信。例如,用于支持基站与图1中示出的其他通信网络实体间进行通信，例如控制节点60等。
可以理解的是，图10仅示出了基站的简化设计。在实际应用中，基站可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本申请的基站都在本申请的保护范围之内。
图11示出了上述实施例中所涉及的终端的一种可能的设计结构的简化示意图，所述终端可以是如图1所示中的终端T4、T5、T6、T7中的一个。该终端包括收发器501，控制器/处理器502，还可以包括存储器503和调制解调处理器504。
收发器501，用于接收网络侧设备的指示消息；该指示消息指示网络侧设备为其配置用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与第二时频资源不重叠；
控制器/处理器502，用于指示收发器501在所述第一时频资源上向所述网络侧设备传输用于进行上行波束训练的上行信息，同时，指示收发器501在所述第二时频资源上向另一终端传输用于进行边链路波束训练的边链路信息。
可选的，所述终端还可以包括天线收发单元500，该天线收发单元500可以集成在所述收发器501中，也可以置于收发器501之外。上行信息经由天线收发单元500发射给上述实施例中所述的基站。在下行链路上，天线收发单元500接收上述实施例中基站发射的下行信息。收发器501调节(例如，滤波、放大、下变频以及数字化等)从天线收发单元500接收的信号并提供输入采样。在调制解调处理器504中，编码器5041接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器5042进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器5044处理(例如，解调)该输入采样并提供符号估计。解码器5043处理(例如，解交织和解码)该符号估计并提供发送给终端的已解码的数据和信令消息。编码器5041、调制器5042、解调器5044和解码器5043可以由合成的调制解调处理器504来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。
控制器/处理器502对终端的动作进行控制管理，用于执行上述实施例中由终端进行的处理。作为示例，控制器/处理器502用于支持终端执行图2或图8或图9中涉及终端处理的内容。存储器503用于存储用于所述终端的程序代码和数据。
图12示出了上述实施例中涉及到的控制节点的示意图。所述控制节点可以为图1所示的控制节点60。控制节点可以包括控制器处理器601，存储器602以及通信单元603。所述控制器/处理器601可以用于协调多个基站之间的资源管理和配置，可以用于执行上述实施例进行资源配置，并可以进行通信链路之间的频率资源复用的及决策等。存储器602可以用于存储控制节点的程序代码和数据。所述通信单元606，用于支持该控制节点与基站进行通信，譬如将所配置的资源的信息发送给基站。
本申请上述实施例所述的网络侧设备，该网络侧设备可以为图10所述的基站，或如图12所述的控制节点。
用于执行本申请上述基站，终端、基站或控制节点的控制器/处理器可以是中央处理器 (CPU)，通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)，现场可编程门阵列(FPGA)或者其他可编程逻辑器件、晶体管逻辑器件，硬件
部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于终端中。当然，处理器和存储介质也可以作为分立组件存在于终端中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (26)

  1. 一种终端与终端之间通信的方法，其特征在于，包括：
    终端接收网络侧设备的指示消息；该指示消息指示所述网络侧设备为所述终端配置的用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与第二时频资源不重叠；
    所述终端在所述第一时频资源上向所述网络侧设备传输用于进行上行波束训练的上行信息，同时，在所述第二时频资源上向另一终端传输用于进行边链路波束训练的边链路信息。
  2. 如权利要求1所述的一种终端与终端之间通信的方法，其特征在于，所述终端在所述第一时频资源上向所述网络侧设备传输用于进行上行波束训练的上行信息，同时，在所述第二时频资源上向另一终端传输用于进行边链路波束训练的边链路信息，包括：
    在第I个时域单位内，所述终端利用其第x个天线收发单元，在所述第一时频资源上向所述网络侧设备的第y个天线收发单元传输上行信息以进行上行波束训练；同时，在所述第二时频资源上向所述另一终端的第z个天线收发单元传输边链路信息以进行边链路波束训练；
    其中x∈[1,X]，X为所述终端的天线收发单元的总数量；y∈[1,Y]，Y为所述网络侧设备的天线收发单元的总数量；z∈[1,Z]，Z为所述另一终端的天线收发单元的总数量；I∈[1,N]，N为网络侧设备为所述终端配置的用于传输上行信息和边链路信息的时域单位的总数量；
    所述终端在其X个天线收发单元上向所述网络侧设备的Y个天线收发单元发送所述上行信息，获得X×Y组不同天线收发单元的上行波束成形训练数据，并且向所述另一终端的Z个天线收发单元发送所述边链路信息，获得X×Z组不同天线收发单元的边链路波束成形训练数据。
  3. 如权利要求1或2所述的终端与终端之间通信的方法，其特征在于，所述第二时频资源为边链路同步信道，所述边链路信息为边链路同步信息；
    或者，所述第二时频资源为物理边链路发现信道，所述边链路信息为边链路发现消息；
    或者，所述第二时频资源为边链路特定信道，所述边链路信息为边链路同步信息和边链路发现消息。
  4. 如权利要求1或2所述的终端与终端之间通信的方法，其特征在于，所述第一时频资源为物理随机信道，所述上行信息为随机接入信息；或
    所述第一时频资源为物理上行控制信道，所述上行信息为上行控制信息。
  5. 如权利要求2所述的终端与终端之间通信的方法，其特征在于，所述天线 收发单元为天线扇区和/或波束。
  6. 如权利要求2所述的终端与终端之间通信的方法，其特征在于，所述方法还包括：
    所述终端接收所述网络侧设备下发的上行波束成形训练结果和边链路波束成形训练结果；或
    所述终端接收所述网络侧设备下发的上行波束成形训练结果和所述另一终端向其发送的边链路波束成形训练结果；
    其中，所述上行波束成形训练结果为网络侧设备与所述另一终端之间的X×Y组不同天线收发单元中的一组最优的天线收发单元；
    所述边链路波束成形训练结果为所述终端与所述另一终端之间的X×Z组不同天线收发单元中的一组最优的天线收发单元。
  7. 一种终端与终端之间通信的方法，其特征在于，包括：
    所述网络侧设备向所述终端发送指示消息，该指示消息中携带有所述网络侧设备为所述终端配置的用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与第二时频资源不重叠；
    在所述终端向所述另一终端传输边链路信息的同时，所述网络侧设备接收所述终端在第一时频资源上向其发送的用于进行上行波束训练的上行信息；所述边链路信息为所述终端在所述第一时频资源上传输的用于进行边链路波束训练的边链路信息。
  8. 如权利要求7所述的终端与终端之间通信的方法，其特征在于，在所述终端向所述另一终端传输边链路信息的同时，所述网络侧设备接收所述终端在第一时频资源上向其发送的用于进行上行波束训练的上行信息，包括：
    在第I个时域单位内，所述终端利用其第x个天线收发单元，在所述第二时频资源上向所述另一终端的第z个天线收发单元传输边链路信息以进行边链路波束训练的同时，所述网络侧设备接收所述终端利用其第x个天线收发单元，在所述第一时频资源上向本网络侧设备的第y个天线收发单元传输的上行信息以进行上行波束训练；其中x∈[1,X]，X为所述终端的天线收发单元的总数量；y∈[1,Y]，Y为网络侧设备的天线收发单元的总数量；z∈[1,Z]，Z为所述另一终端的天线收发单元的总数量；I∈[1,N]，N为网络侧设备为所述终端配置的用于传输上行信息和边链路信息的时域单位的总数量；
    网络侧设备在其Y个天线收发单元接收所述终端在其X个天线收发单元向其发送的上行信息，直至获得X×Y组不同天线收发单元的上行波束成形训练数据。
  9. 如权利要求7或8所述的终端与终端之间通信的方法，其特征在于，所述网络侧设备为所述终端配置的第二时频资源为物理边链路发现信道，所述边链路 信息为边链路发现消息；或
    所述网络侧设备为所述终端配置的第二时频资源为边链路同步信道，所述边链路信息为边链路同步信息；或
    所述网络侧设备为所述终端配置的第二时频资源为边链路特定信道，所述边链路信息为边链路同步信息和边链路发现消息。
  10. 如权利要求7或8所述的终端与终端之间通信的方法，其特征在于，所述网络侧设备为所述终端配置的第一时频资源为物理随机信道，所述上行信息为随机接入信息；或
    所述网络侧设备为所述终端配置的第一时频资源为物理上行控制信道，所述上行信息为上行控制信息。
  11. 如权利要求8所述的终端与终端之间通信的方法，其特征在于，所述天线收发单元为天线扇区和/或波束。
  12. 如权利要求8所述的终端与终端之间通信的方法，其特征在于，所述方法还包括：
    所述网络侧设备接收所述另一终端向其发送的边链路波束成形训练结果；所述边链路波束成形训练结果为终端与所述另一终端之间的X×Z组不同天线收发单元中的一组最优的天线收发单元；
    所述网络侧设备将所述边链路波束成形训练结果下发至所述终端。
  13. 如权利要求8所述的终端与终端之间通信的方法，其特征在于，所述方法还包括：
    所述网络侧设备从所述X×Y组不同天线收发单元中选择一组最优的天线收发单元作为上行波束成形训练结果下发至所述终端。
  14. 一种终端，其特征在于，包括：
    收发器，用于接收网络侧设备的指示消息；
    处理器，所述处理器用于根据所述指示消息获取所述网络侧设备为所述终端配置的用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与第二时频资源不重叠；
    所述收发器还用于在所述处理器获取的第一时频资源上向所述网络侧设备传输用于进行上行波束训练的上行信息，同时，在所述处理器获取的第二时频资源上向所述另一终端传输用于进行边链路波束训练的边链路信息。
  15. 如权利要求14所述的一种终端，其特征在于，所述收发器包括X个天线收发单元；
    在第I个时域单位内，第x个天线收发单元，用于在所述第一时频资源上向所述网络侧设备的第y个天线收发单元传输上行信息以进行上行波束训练；同时，在所述第二时频资源上向所述另一终端的第z个天线收发单元传输边链路信息以进行边链路波束训练；
    其中x∈[1,X]，X为所述终端的天线收发单元的总数量；y∈[1,Y]，Y为网络侧设备的天线收发单元的总数量；z∈[1,Z]，Z为所述另一终端的天线收发单元的总数量；I∈[1,N]，N为网络侧设备为所述终端配置的用于传输上行信息和边链路信息的时域单位的总数量；
    所述X个天线收发单元向所述网络侧设备的Y个天线收发单元发送所述上行信息，获得X×Y组不同天线收发单元的上行波束成形训练数据，并且向所述另一终端的Z个天线收发单元发送边链路信息，获得X×Z组不同天线收发单元的边链路波束成形训练数据。
  16. 如权利要求14或15所述的终端，其特征在于，所述第二时频资源为边链路同步信道，所述边链路信息为边链路同步信息；
    或者，所述第二时频资源为物理边链路发现信道，所述边链路信息为边链路发现消息；
    或者，所述第二时频资源为边链路特定信道，所述边链路信息为边链路同步信息和边链路发现消息。
  17. 如权利要求14或15所述的终端，其特征在于，所述第一时频资源为物理随机信道，所述天线收发单元在所述物理随机信道上传输的上行信息为随机接入信息；或所述第一时频资源为物理上行控制信道，所述天线收发单元在所述物理上行控制信道上传输的上行信息为上行控制信息。
  18. 如权利要求15所述的终端，其特征在于，所述天线收发单元为天线扇区和/或波束。
  19. 如权利要求15所述的终端，其特征在于，所述收发器还接收所述网络侧设备下发的上行波束成形训练结果和边链路波束成形训练结果；或
    接收所述网络侧设备下发的上行波束成形训练结果和所述另一终端向其发送的边链路波束成形训练结果；
    其中，所述上行波束成形训练结果为网络侧设备与所述另一终端之间的X×Y组不同天线收发单元中的一组最优的天线收发单元；
    所述边链路波束成形训练结果为所述终端与所述另一终端之间的X×Z组不同天线收发单元中的一组最优的天线收发单元。
  20. 一种网络侧设备，其特征在于，包括：
    处理器，用于为终端配置用于传输上行信息的第一时频资源和用于传输边链路信息的第二时频资源；所述第一时频资源与第二时频资源不重叠；
    收发器，用于向所述终端发送指示消息，该指示消息中携带有所述第一时频资源与第二时频资源；
    所述收发器还用于接收所述终端在第一时频资源上向其发送的用于进行上行波束训练的上行信息；所述边链路信息为所述终端在所述第一时频资源上传输的用于进行边链路波束训练的边链路信息。
  21. 如权利要求20所述的网络侧设备，其特征在于，所述收发器还包括Y个天线收发单元；
    在第I个时域单位内，在所述终端利用其第x个天线收发单元，在所述第二时频资源上向所述另一终端的第z个天线收发单元传输边链路信息以进行边链路波束训练的同时，第y个天线收发单元接收所述终端利用其第x个天线收发单元在所述第一时频资源上向其传输的上行信息以进行上行波束训练；其中x∈[1,X]，X为所述终端的天线收发单元的总数量；y∈[1,Y]，Y为网络侧设备的天线收发单元的总数量；z∈[1,Z]，Z为所述另一终端的天线收发单元的总数量；I∈[1,N]，N为网络侧设备为所述终端配置的用于传输上行信息和边链路信息的时域单位的总数量；
    所述Y个天线收发单元接收所述终端在其X个天线收发单元向其发送的上行信息，直至获得X×Y组不同天线收发单元的上行波束成形训练数据。
  22. 如权利要求20或21所述的网络侧设备，其特征在于，所述处理器为所述终端配置的第二时频资源为物理边链路发现信道，所述边链路信息为边链路发现消息；
    或者，所述处理器为所述终端配置的第二时频资源为边链路同步信道，所述边链路信息为边链路同步信息；
    或者，所述处理器为所述终端配置的第二时频资源为边链路特定信道，所述边链路信息为边链路同步信息和边链路发现消息。
  23. 如权利要求20或21所述的网络侧设备，其特征在于，所述处理器为所述终端配置的第一时频资源为物理随机信道，所述天线收发单元在所述物理随机信道上传输的上行信息为随机接入信息；或
    所述处理器为所述终端配置的第一时频资源为物理上行控制信道，所述天线收发单元在所述物理上行控制信道上传输的上行信息为上行控制信息。
  24. 如权利要求21所述的网络侧设备，其特征在于，所述天线收发单元为天线扇区和/或波束。
  25. 如权利要求21所述的网络侧设备，其特征在于，所述收发器还用于接收所述另一终端向其发送的边链路波束成形训练结果；所述边链路波束成形训练结果为所述终端与所述另一终端之间的X×Z组不同天线收发单元中的一组最优的天线收发单元；
    所述收发器还用于将所述边链路波束成形训练结果下发至所述终端。
  26. 如权利要求21所述的网络侧设备，其特征在于，所述收发器还用于从所述X×Y组不同天线收发单元中选择一组最优的天线收发单元作为上行波束成形训练结果下发至所述终端。
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