WO2017070956A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2017070956A1
WO2017070956A1 PCT/CN2015/093461 CN2015093461W WO2017070956A1 WO 2017070956 A1 WO2017070956 A1 WO 2017070956A1 CN 2015093461 W CN2015093461 W CN 2015093461W WO 2017070956 A1 WO2017070956 A1 WO 2017070956A1
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WO
WIPO (PCT)
Prior art keywords
antennas
network side
side device
antenna
location information
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PCT/CN2015/093461
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English (en)
Chinese (zh)
Inventor
宋毅
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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 PCT/CN2015/093461 priority Critical patent/WO2017070956A1/fr
Priority to CN201580056852.5A priority patent/CN107078785A/zh
Publication of WO2017070956A1 publication Critical patent/WO2017070956A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station

Definitions

  • the embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a data transmission method and apparatus.
  • the high frequency band with a larger available bandwidth is increasingly becoming a candidate band for next generation communication systems, for example, in the range of 3 GHz to 200 GHz, the potential available bandwidth is about 250 GHz.
  • MIMO multiple input multiple output
  • each antenna has a transmission power of P and a distance of 10 km, then after 10 km of attenuation, the power attenuation of each signal is P/8.
  • the attenuation of the signal is more than ten times that of the low frequency electromagnetic wave, assuming 64 times. Then, after 10 km of transmission, the power is 1/512 times the power of the original signal. If massive MIMO technology is used, for example, 64 antennas are used, then after 10 km of transmission, the power of the transmitted and received signals is 1/8 of the power of the original signal, thus ensuring the cell coverage of the communication system.
  • a high frequency band for example, 30 GHz
  • the attenuation of the signal is more than ten times that of the low frequency electromagnetic wave, assuming 64 times. Then, after 10 km of transmission, the power is 1/512 times the power of the original signal. If massive MIMO technology is used, for example, 64 antennas are used, then after 10 km of transmission, the power of the transmitted and received signals is 1/8 of the power of the original signal, thus ensuring the cell coverage of the communication system.
  • the embodiment of the invention provides a data transmission method and device, which are used to solve the technical problem that the calculation amount caused by the signal transmission and reception of all the antennas fixed by the network side device existing in the prior art is excessive.
  • an embodiment of the present invention provides a data transmission method, including:
  • the network side device acquires location information of the user equipment UE
  • the network side device determines, according to the location information, an antenna subset corresponding to the location information in an antenna set of the network side device; the number of antennas in the antenna set is greater than 1;
  • the network side device performs data transmission with the UE by using the antenna subset.
  • the network side device can be reduced.
  • the method of the present invention determines the number of antennas to be served by the UE according to the location information of the UE, and the number of antennas serving the UE is different according to the location information, so compared with the prior art.
  • the method in the embodiment of the present invention can reduce the data calculation amount and the storage amount of the network side device as a whole.
  • the acquiring, by the network side device, the location information of the user equipment UE includes:
  • the network side device measures an intensity of a reference signal sent by the UE, and the strength is used to represent location information of the UE.
  • the network side device is configured to measure a strength of the reference signal sent by the UE, including:
  • the network side device measures the strength of the random access signal sent by the UE.
  • the network side device measures the strength of the monitoring reference signal SRS sent by the UE.
  • the network side device according to the Determining the subset of antennas corresponding to the location information in the antenna set of the network side device, including:
  • the network side device determines, in the antenna set, an antenna corresponding to the number of antennas to form the antenna subset.
  • the network side device determines, in the antenna set, an antenna corresponding to the number of antennas to form the antenna Subsets, including:
  • the network side device determines, in the set of antennas, antennas in the same horizontal direction corresponding to the number of antennas to form the antenna subset; or
  • the network side device determines, in the antenna set, an antenna forming a subset of antennas in the same vertical direction corresponding to the number of antennas;
  • the network side device determines, in the set of antennas, antennas on the same plane that correspond to the number of antennas to form the antenna subset.
  • the second aspect of the present invention provides a network side device, including:
  • a processor configured to acquire location information of the user equipment UE, and determine, according to the location information, a subset of antennas corresponding to the location information in the antenna set;
  • a transceiver configured to perform data transmission with the UE by using the antenna subset.
  • the processor is configured to: receive, by using the antenna set and the transceiver, a current location of the UE that is sent by the UE, and The current location determines a relative location between the UE and the network side device as The location information; or measuring an intensity of a reference signal sent by the UE, the strength being used to characterize location information of the UE.
  • the processor is configured to: measure an intensity of a random access signal sent by the UE; or measure the The strength of the listening reference signal SRS sent by the UE.
  • the processor is configured to: And determining, according to the correspondence between the location information and the number of antennas, the number of antennas corresponding to the location information; determining, in the antenna set, an antenna corresponding to the number of antennas to form the antenna subset.
  • the processor is configured to: determine, in the antenna set, that the number of antennas is at the same level Antennas in the direction form the subset of antennas; or
  • Determining, in the set of antennas, antennas on the same plane corresponding to the number of antennas forms the subset of antennas.
  • an embodiment of the present invention provides a data transmission apparatus.
  • the data transmission device comprises means for performing the method of the first aspect.
  • FIG. 1 is a flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of determining a subset of antennas according to an embodiment of the present invention
  • FIG. 3 is a functional block diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a network side device according to an embodiment of the present invention.
  • the embodiment of the invention provides a data transmission method and device, which are used to solve the technical problem that the calculation amount caused by the signal transmission and reception of all the antennas fixed by the network side device existing in the prior art is excessive.
  • an alternative of the embodiment of the present invention is as follows:
  • the network side device acquires location information of the UE, and the network side device determines, according to the location information, an antenna subset corresponding to the location information in the antenna set of the network side device; the network side device performs data transmission with the UE by using the antenna subset.
  • the network side device can be reduced.
  • the method of the present invention determines the number of antennas to be served by the UE according to the location information of the UE, and the number of antennas serving the UE is different according to the location information, so compared with the prior art.
  • the method in the embodiment of the present invention can reduce the data calculation amount and the storage amount of the network side device as a whole.
  • FIG. 1 is a flowchart of a data transmission method according to an embodiment of the present invention. This method can be applied to network side devices. This method can also be applied to other electronic devices if there are multiple antennas in other electronic devices, such as user devices.
  • the network side device is, for example, a base station.
  • a base station herein may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to an Internet Protocol (IP) packet as a relationship between the wireless terminal and the rest of the access network.
  • IP Internet Protocol
  • a router wherein the rest of the access network may comprise an IP network.
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (English: NodeB; NB for short) in Wideband Code Division Multiple Access (WCDMA), or may be long term evolution (English: Long Term Evolution; LTE for short)
  • the evolved base station (English: Evolutional Node B; eNB or eNodeB for short), or a relay station or an access point, or a base station in a future 5G network, etc., is not limited by the present invention.
  • the user equipment mentioned in this document may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless connection function, or is connected to the wireless device. Other processing devices for the modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (English: Radio Access Network; RAN for short), and the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and has
  • the computer of the mobile terminal for example, may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • the wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, and a remote terminal. Access Terminal, User Terminal, User Agent, User Device or User Equipment.
  • the UE will be referred to hereinafter as referring to the user equipment herein.
  • the method includes:
  • Step 11 The network side device acquires location information of the UE.
  • Step 12 The network side device determines, according to the location information, an antenna subset corresponding to the location information in an antenna set of the network side device; the number of antennas in the antenna set is greater than 1; and an antenna in the antenna subset The number is greater than or equal to 1, and less than or equal to the number of antennas in the antenna set;
  • Step 13 The network side device performs data transmission with the UE by using the antenna subset.
  • step 11 has various possible implementation manners, which will be exemplified below.
  • the step 11 includes: the network side device receiving the current location of the UE sent by the UE, and determining, according to the current location, a relative location between the UE and the network side device as the location information.
  • the UE includes a positioning module, such as a Global Positioning System (GPS).
  • GPS Global Positioning System
  • the UE can use the positioning module to obtain its current location and report the current location to the network side device.
  • the timing at which the UE reports its current location may be a fixed time, for example, in a process in which the UE accesses the network side device.
  • the timing of the UE reporting the current location of the UE may also be periodically reported, for example, every 5 minutes, or reported in real time.
  • the timing of the UE reporting the current location of the UE may also be reported when it is determined that the current location of the UE is changed from the current location of the previous report, so that the workload of the network side device may be reduced.
  • the current location of the UE to report itself may be triggered automatically by the UE, or may be manually triggered by the user.
  • the network side device receives the current location of the UE reported by the UE, and the network side device determines the relative location between the UE and the network side device according to the current location of the UE, for example, determining the distance between the UE and the network side device, as step 11 Location information in .
  • the network side device may calculate the distance between the two according to the current location of the UE and the location information of the network side device itself.
  • the network side device has stored the correspondence between the location information and the distance, and directly obtains the distance by looking up the table.
  • the network side device may directly use the current location reported by the UE as the location information in step 11.
  • the step 11 includes: the network side device measures the reference sent by the UE The strength of the signal used to characterize the location information of the UE.
  • the reference signal may be a random access signal sent by the UE or a sounding reference signal (Sounding Reference Signal, SRS for short).
  • step 11 includes: measuring, by the network side device, the strength of the random access signal sent by the UE; or measuring the strength of the SRS sent by the UE.
  • the downlink synchronization signal of the network side device is searched for downlink synchronization with the network side device; the UE sends the random access signal through the physical random access channel (English: Physical Random Access Channel, PRACH). .
  • the network side device measures the strength of the random access signal sent by the UE.
  • the UE after the UE has accessed the network side device, the UE sends the SRS, and the network side device measures the strength of the SRS sent by the UE.
  • the UE may also send other uplink reference signals, and correspondingly, the network side device may measure other uplink reference signals.
  • the strength in the embodiment of the present invention may be power.
  • other parameters for characterizing power may also be used, which are not specifically limited in the present invention.
  • step 12 is next performed, that is, the antenna subset corresponding to the location information is determined in the antenna set of the network side device according to the location information.
  • step 12 there are many possible implementations of step 12, which will be exemplified below.
  • the step 12 includes: determining, by the network side device, the number of antennas corresponding to the location information according to the correspondence between the location information and the number of antennas; and determining, by the network side device, the antenna in the antenna set
  • the number of corresponding antennas forms a subset of the antennas.
  • the network side device may store a correspondence table between the location information and the number of antennas. After obtaining the location information, query the correspondence table to find the number of antennas corresponding to the location information, and then select and match the antenna set. The antenna corresponding to the number of antennas forms a subset of the antennas of the UE.
  • the network side device is Antennas 1 through 8 can be determined to form a subset of the antennas of the UE.
  • the power remaining after the total power of the signal sent by the antenna reaches the receiving end is related to the distance, in order to ensure that the UE can correctly receive the downlink data or the network side device correctly receives the uplink data, The data calculation amount and the storage amount of the network side device are reduced. Therefore, when the location information indicates that the distance of the UE is relatively close to the network side device, the number of antennas may be determined to be less. When the location information indicates that the distance of the UE is farther than the network side device, The number of antennas can be determined more.
  • the above correspondence table may be formed in accordance with this principle. For example, when the distance is 3 meters, the number of antennas is 8, and when the distance is 5 meters, the number of antennas is 10.
  • the step 12 includes: determining, by the network side device, total power required for data transmission; determining, according to the location information, power that each antenna can provide; according to the total power and each antenna The provided power determines the number of antennas; the network side device determines, in the set of antennas, an antenna corresponding to the number of antennas to form a subset of antennas.
  • the following line transmitting antenna is determined as an example, and the location information is exemplified by the distance between the UE and the network side device. If the UE wants to correctly receive downlink data, assuming that the downlink data has a power of at least P/2, the total power required is P/2.
  • the downlink transmission power (for example, P) of each antenna reaches the UE, and the attenuation is the ratio of the original power P, which is assumed to be P/4.
  • the number of antennas is then determined to be 2 based on the total power P/2 and the power P/4 that each antenna can provide.
  • the determination of the receiving antenna of the foregoing row is taken as an example.
  • the total power required by the network side device is the minimum power that can correctly receive the uplink data, or is greater than the minimum power, and is assumed to be P.
  • the power that each antenna can provide is determined. If the transmission power of the UE is P, the distance corresponding to the location information is attenuated.
  • the signal power is P/4, that is, each antenna can provide The power is P/4.
  • the number of antennas is then determined to be 4 based on the total power P and the power P/4 that each antenna can provide.
  • the position information is intensity
  • the power that each antenna can provide can be calculated, and the other parts and the position information described above are The same distance.
  • the above correspondence table may be calculated in advance by the second possible implementation of step 12.
  • the change between the position information can be set smaller, for example, the number of antennas is calculated every 1 meter.
  • the network side device selects an antenna corresponding to the number of antennas in its own antenna set to form an antenna subset.
  • the number of antennas may be one, or two, or all antennas.
  • the antenna is determined according to the number of antennas. In actual use, there are also various implementation manners, which will be described in detail below.
  • antennas in the same horizontal direction corresponding to the number of antennas form a subset of antennas.
  • the same horizontal direction of the antenna will form a horizontal beamforming.
  • the advantage of this scheme is that it is simple to operate and has a good horizontal signal enhancement effect.
  • the antennas in the same vertical direction corresponding to the number of antennas form a subset of antennas.
  • the same vertical direction of the antenna will form a vertical beamforming.
  • antennas on the same plane corresponding to the number of antennas form a subset of antennas.
  • Antennas of the same plane form beamforming in the 3-dimensional direction.
  • the advantage of this scheme is to make full use of the beam enhancement of the three-dimensional geometric space of the cell.
  • the network side device takes a base station as an example.
  • the method includes:
  • Step 101 The base station sends a downlink synchronization signal. This step is well known to those skilled in the art and will not be described herein.
  • Step 102 The UE searches for the downlink synchronization signal of the base station after starting the power and completes downlink synchronization. This step is well known to those skilled in the art and will not be described herein.
  • Step 103 The UE sends a random access signal to the base station, for example, sends a random access signal through the PRACH. This step is well known to those skilled in the art and will not be described herein.
  • Step 104 The base station measures the strength of the random access signal, and selects the antenna of the UE according to the strength. Subset. For example, assume that the UE is in the user's home when it is just turned on. However, the distance between the user's home and the base station is relatively long, so the attenuation of the random access signal from the UE to the base station is large, and the strength measured by the base station is weak. Therefore, the distance between the UE and the base station is relatively long, so the terminal can be selected. More antennas serve the UE, for example, the total number of antennas is 8, and the determined subset of antennas includes 4 antennas.
  • Step 105 After determining the antenna subset, the base station sends a random access response message to the UE.
  • the response message carries the number of antennas selected by the base station for the UE.
  • the UE receives the response message, it determines that the access is successful.
  • Step 106 The UE periodically sends an SRS signal to the base station.
  • Step 107 The base station measures the strength of the SRS signal and updates the antenna subset. For example, after the UE accesses successfully, it is carried away by the user, so the distance between the UE and the base station changes and becomes closer to the base station. Therefore, the signal strength measured by the base station is stronger, and then A smaller number of antennas may be selected to serve the UE, for example, the antenna subset includes 2 antennas at this time.
  • Step 108 When the antenna subset changes, the base station may send an antenna number reconfiguration message to the UE to notify the UE base station of the number of antennas selected for the UE.
  • step 13 is performed, that is, the network side device performs data transmission with the UE through the antenna subset.
  • the network side device sends the downlink data to the UE through the antenna subset, that is, the network side device does not modulate the downlink data to other antennas except the antenna subset. Therefore, the embodiment of the present invention reduces the amount of computation compared to the manner in which all antennas are fixedly used for downlink data transmission in the prior art.
  • the network side device receives the uplink data sent by the UE through the antenna subset. That is to say, the network side device does not receive, demodulate, and the like the uplink data on the antennas other than the antenna subset, so the uplink data on all the antennas is fixedly received and demodulated compared to the prior art. In the manner of the present invention, the amount of data calculation and the amount of data storage are reduced.
  • the method in the embodiment of the present invention determines the number of antennas to be served for the UE according to the location information of the UE, and the number of antennas serving the UE is different according to the location information, so There are techniques in the technology that use all antennas for data transmission and reception.
  • the method in the embodiment of the present invention can reduce the data calculation amount and the storage amount of the network side device as a whole.
  • an embodiment of the present invention further provides a data transmission apparatus for implementing the method shown in FIG.
  • the data transmission apparatus includes: a processing unit 201, configured to acquire location information of the user equipment UE, and determine, according to the location information, a location corresponding to the location information in an antenna set of the network side device. An antenna subset; the number of antennas in the antenna set is greater than 1; and the transceiver unit 202 is configured to perform data transmission with the UE by using the antenna subset.
  • the processing unit 201 is configured to: receive, by the transceiver unit, a current location of the UE that is sent by the UE, and determine, according to the current location, a relative location between the UE and the network side device.
  • the location information or
  • the processing unit 201 is configured to measure an strength of the random access signal sent by the UE, or measure an intensity of the monitoring reference signal SRS sent by the UE.
  • the processing unit 201 is configured to determine, according to the correspondence between the location information and the number of antennas, the number of antennas corresponding to the location information, and determine, in the antenna set, an antenna corresponding to the number of antennas to form the antenna. Subset.
  • processing unit 201 is configured to:
  • Determining, in the set of antennas, antennas on the same plane corresponding to the number of antennas forms the subset of antennas.
  • the data transmission device can be integrated with the network side device or can be an independent third party device.
  • the data transmission device is also applicable to the data transmission device of the present embodiment.
  • the foregoing describes the implementation method of the data transmission device in this embodiment by using the foregoing detailed description of the data transmission method. Therefore, for the sake of brevity of the description, Detailed.
  • an embodiment of the present invention further provides a network side device, which is used to implement the method shown in FIG.
  • the network side device includes: an antenna set 301, a processor 302, and a transceiver 303.
  • the processor 302 may be a central processing unit, an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be a field programmable gate array.
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the transceiver 303 is configured to perform network communication with an external device through the antenna set 301, and specifically communicate with an external device through a network such as an Ethernet, a wireless access network, or a wireless local area network.
  • Transceiver 303 can include receivers and transmitters that are physically separate or integrated with one another.
  • the number of antennas in the antenna set 301 is greater than one.
  • the network side device further includes a memory, and the number of the memory may be one or more.
  • the memory may include a read only memory (English: Read Only Memory, ROM for short), a random access memory (English: Random Access Memory, RAM for short), and a disk storage. These memories, transceivers 303 are coupled to processor 302 via a bus.
  • the processor 302 is configured to acquire location information of the user equipment UE, determine, according to the location information, a subset of antennas corresponding to the location information in the antenna set, and a transceiver 303, configured to The subset of antennas performs data transmission with the UE.
  • the processor 302 is configured to: receive, by using the antenna set and the transceiver 303, a current location of the UE that is sent by the UE, and determine, between the UE and the network side device, based on the current location. a relative position as the location information; or measuring an intensity of a reference signal transmitted by the UE, the strength being used to characterize location information of the UE.
  • the processor 302 is configured to: measure an strength of the random access signal sent by the UE; or measure an intensity of the monitoring reference signal SRS sent by the UE.
  • the processor 302 is configured to: determine, according to the correspondence between the location information and the number of antennas, An antenna number corresponding to the location information; determining, in the antenna set, an antenna corresponding to the number of antennas to form the antenna subset.
  • the processor 302 is configured to: determine, in the set of antennas, antennas in the same horizontal direction that correspond to the number of antennas to form the antenna subset; or
  • Determining, in the set of antennas, antennas on the same plane corresponding to the number of antennas forms the subset of antennas.
  • the network side device acquires the location information of the UE; the network side device determines, according to the location information, the antenna subset corresponding to the location information in the antenna set of the network side device; the network side device passes the antenna subset Data transmission with the UE. Because the power remaining after the total power of the signal sent by the antenna reaches the receiving end is related to the distance, in order to ensure that the UE can correctly receive the downlink data or the network side device correctly receives the uplink data, the network side device can be reduced.
  • the method of the present invention determines the number of antennas to be served by the UE according to the location information of the UE, and the number of antennas serving the UE is different according to the location information, so compared with the prior art.
  • the method in the embodiment of the present invention can reduce the data calculation amount and the storage amount of the network side device as a whole.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application may employ computer-usable storage media (including but not limited to disk) in one or more of the computer-usable program code embodied therein.
  • a form of computer program product embodied on a memory and optical storage, etc.).
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

La présente invention porte, dans un mode de réalisation, sur un procédé et sur un dispositif de transmission de données. Le procédé comprend les étapes suivantes : un équipement côté réseau acquiert les informations de localisation d'un équipement utilisateur (UE pour User Equipement) ; l'équipement côté réseau détermine, en fonction des informations de localisation, un sous-ensemble d'antennes correspondant aux informations de localisation dans l'ensemble d'antennes de l'équipement côté réseau ; le nombre d'antennes de l'ensemble d'antennes est supérieur à 1 ; et l'équipement côté réseau effectue une transmission de données avec l'équipement utilisateur par le biais du sous-ensemble d'antennes. Le procédé peut réduire en général la quantité de calcul et de stockage de données dans l'équipement côté réseau.
PCT/CN2015/093461 2015-10-30 2015-10-30 Procédé et dispositif de transmission de données WO2017070956A1 (fr)

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CN201580056852.5A CN107078785A (zh) 2015-10-30 2015-10-30 一种数据传输方法及装置

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CN112821930A (zh) * 2020-10-25 2021-05-18 泰州物族信息科技有限公司 自适应天线状态管理平台

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