WO2018081972A1 - 通信方法、终端设备和网络设备 - Google Patents

通信方法、终端设备和网络设备 Download PDF

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Publication number
WO2018081972A1
WO2018081972A1 PCT/CN2016/104441 CN2016104441W WO2018081972A1 WO 2018081972 A1 WO2018081972 A1 WO 2018081972A1 CN 2016104441 W CN2016104441 W CN 2016104441W WO 2018081972 A1 WO2018081972 A1 WO 2018081972A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
indication information
network device
uplink
location area
Prior art date
Application number
PCT/CN2016/104441
Other languages
English (en)
French (fr)
Inventor
唐海
许华
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to MX2019005163A priority Critical patent/MX2019005163A/es
Priority to DK16920497.1T priority patent/DK3534635T3/da
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to RU2019116908A priority patent/RU2735325C1/ru
Priority to PCT/CN2016/104441 priority patent/WO2018081972A1/zh
Priority to CA3042591A priority patent/CA3042591C/en
Priority to KR1020197015845A priority patent/KR20190073536A/ko
Priority to EP16920497.1A priority patent/EP3534635B1/en
Priority to BR112019008795A priority patent/BR112019008795A2/pt
Priority to CN201680090599.XA priority patent/CN109923888B/zh
Priority to ES16920497T priority patent/ES2868949T3/es
Priority to SG11201903920VA priority patent/SG11201903920VA/en
Priority to AU2016428405A priority patent/AU2016428405A1/en
Priority to PT169204971T priority patent/PT3534635T/pt
Priority to EP21156577.5A priority patent/EP3840258B1/en
Priority to JP2019523027A priority patent/JP7044777B2/ja
Priority to TW106137629A priority patent/TW201818757A/zh
Publication of WO2018081972A1 publication Critical patent/WO2018081972A1/zh
Priority to IL266332A priority patent/IL266332B/en
Priority to PH12019500987A priority patent/PH12019500987A1/en
Priority to US16/401,753 priority patent/US10912109B2/en
Priority to ZA2019/03600A priority patent/ZA201903600B/en
Priority to US16/952,898 priority patent/US11284419B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J2011/0003—Combination with other multiplexing techniques
    • H04J2011/0013—Combination with other multiplexing techniques with TDM/TDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • Embodiments of the present invention relate to the field of communications, and more particularly, to a communication method, a terminal device, and a network device.
  • uplink transmission can support at least two waveforms, so that the base station needs to decide which waveform to use when performing uplink scheduling.
  • the base station when determining the waveform used for uplink transmission, the base station generally needs to measure the uplink reference signal sent by the terminal device. In this way, if the terminal device is in the RRC connected mode (RRC connected mode), continuously transmitting the uplink reference signal to the base station for a long time consumes a large amount of power of the terminal device. If the terminal device does not send the uplink reference signal to the base station, the base station may not be able to track the change of the uplink reference signal of the terminal device in real time, thereby causing erroneous scheduling of the uplink transmission.
  • RRC connected mode RRC connected mode
  • the embodiment of the invention provides a communication method, a terminal device and a network device, which can be applied to determining a waveform used for uplink transmission of a terminal device in various scenarios.
  • the first aspect provides a communication method, including: the terminal device sends first indication information to the network device, where the first indication information is used to indicate a location area where the terminal device is currently located; and the terminal device receives the network device to send The second indication information is used to indicate that the network device determines the first target waveform from the at least two uplink selectable waveforms according to the location area where the terminal device is currently located; the terminal device adopts the first The target waveform is transmitted upstream.
  • the location area where the terminal device is currently located may specifically refer to a location area where the terminal device is currently located in a cell managed by the network device, and the division of the location area may depend on the transmission power of the terminal device.
  • the location area where the terminal device is currently located includes: a cell center area, a cell edge area, or an area between the cell center area and the cell edge area.
  • the terminal device may always send the first indication information to the network device after determining the current location area.
  • the terminal device may also send the first indication information to the network device when determining that the current location area meets the reporting condition.
  • the reporting condition may be defined by the protocol, or the terminal device may receive the indication information sent by the network device, where the indication information is used to indicate the reporting condition, before the terminal device sends the first indication information to the network device.
  • the terminal device sends the first indication information to the network device, where the terminal device sends a random access request to the network device, where the random access request carries the first indication information.
  • the terminal device receives the second indication information that is sent by the network device, and the method includes: the terminal device receiving the random access response sent by the network device, where the random access response carries the second indication information.
  • the random access request further carries a preamble, wherein a bit occupied by the first indication information is followed by the preamble After the code.
  • the random access request carries the preamble and the first indication information.
  • the method before the terminal device sends the first indication information to the network device, the method further includes: the terminal device according to the location area Determining a preamble corresponding to the location area where the terminal device is currently located from the at least two preambles; the random access request carrying the first indication information, including: the random access The request carries a preamble corresponding to a location area in which the terminal device is currently located.
  • the correspondence between the preamble or the preamble set and the location area may be defined in a protocol, or the terminal device may receive the indication information sent by the network device, before the terminal device determines the corresponding preamble, the indication The information is used to indicate a correspondence between the preamble or the preamble set and the location area.
  • the network device may determine, according to the preamble carried in the random access request, the location area where the terminal device is currently located.
  • the preamble carried in the random access request is used to indicate the location area where the terminal device is currently located, which can save signaling overhead.
  • the terminal device sends the first indication information to the network device, where the terminal device sends a scheduling request to the network device, where The scheduling request carries the first indication information.
  • the terminal device receives the second indication information that is sent by the network device, and the method includes: receiving, by the terminal device, an uplink authorization sent by the network device, where the uplink authorization carries the second indication information.
  • the method before the terminal device sends the first indication information to the network device, the method further includes: the terminal device The downlink reference signal sent by the device performs measurement; the terminal device determines, according to the result of the measurement, a location area where the terminal device is currently located.
  • the terminal device determines, according to the result of the measurement, a location area that the terminal device is currently located, including: the terminal device The location area of the terminal device is determined by comparing the result of the measurement with at least two threshold conditions.
  • the terminal device may determine that the terminal device is currently in the cell center. region.
  • the terminal device may determine that the terminal device is currently at the cell edge. region.
  • the terminal device can determine that the terminal device is currently located between the cell center area and the cell edge area.
  • the method further The method includes: receiving, by the terminal device, third indication information sent by the network device, where the third indication information is used to indicate the at least two threshold conditions.
  • the second indication information is further used to indicate that the terminal device sends an uplink reference signal to the network device, and the terminal device uses the first target waveform to perform uplink transmission, where the terminal device uses the first target waveform according to the second indication information.
  • the network device sends an uplink reference signal.
  • the first target waveform may be specifically DFT-s-OFDM in the at least two uplink selectable waveforms.
  • the method further includes: receiving, by the terminal device, fourth indication information that is sent by the network device, where the fourth indication information is used by And indicating to the second target waveform determined by the network device from the at least two uplink selectable waveforms according to the uplink reference signal; the terminal device uses the second target waveform for uplink transmission.
  • the second aspect provides another communication method, including: receiving, by the network device, first indication information sent by the terminal device, where the first indication information is used to indicate a location area where the terminal device is currently located; and the network device is configured according to the terminal a location area in which the device is currently located, the first target waveform is determined from the at least two uplink selectable waveforms; the network device sends the second indication information to the terminal device, where the second indication information is used to indicate that the terminal device adopts the first A target waveform is transmitted upstream.
  • the location area where the terminal device is currently located includes: a cell center area, a cell edge area, or an area between the cell center area and the cell edge area.
  • the network device receives the first indication information sent by the terminal device, where the network device receives the random connection sent by the terminal device In the request, the random access request carries the first indication information.
  • the network device sends the second indication information to the terminal device, where the network device sends a random access response to the terminal device, where the random access response carries the second indication information.
  • the random access request further carries a preamble, wherein a bit occupied by the first indication information is followed by the preamble After the code.
  • the random access request carries the first indication information, including: the random access request carries the current The preamble corresponding to the location area in which it is located.
  • the network device may determine, according to the preamble carried in the random access request, the location area where the terminal device is currently located.
  • the receiving, by the network device, the first indication information sent by the terminal device the network device receiving the scheduling request sent by the terminal device
  • the scheduling request carries the first indication information
  • the network device sends the second indication information to the terminal device, where the network device sends an uplink authorization to the terminal device, where the uplink authorization carries the second indication information.
  • the method before the network device receives the first indication information sent by the terminal device, the method further includes: the network device The terminal device sends a downlink reference signal, where the downlink reference signal is used by the terminal device to determine a current location area.
  • the method before the network device receives the first indication information sent by the terminal device, the method further includes: the network device The terminal device sends the third indication information, where the third indication information is used to indicate at least two threshold conditions, where the at least two threshold conditions are used by the terminal device to determine the current location area according to the measurement result of the downlink reference signal.
  • the network device sends the third indication information to the terminal device, including: the network device sends a broadcast message to the terminal device The broadcast message carries the third indication information.
  • the network device determines, according to the location area that the terminal device is currently located, from the at least two uplink selectable waveforms. a target waveform, including: if the first indication information indicates that the terminal device is currently between the cell edge region and the cell center region, determining DFT-s-OFDM in the at least two uplink selectable waveforms as the first target Waveform.
  • the second indication information is further used to indicate that the terminal device sends an uplink reference signal to the network device
  • the method further includes: receiving, by the network device, the terminal device adopting the first target waveform Sending an uplink reference signal; the network device determines a second target waveform from the at least two uplink selectable waveforms according to the uplink reference signal sent by the terminal device.
  • the network device may measure the uplink reference signal sent by the terminal device, and determine the second target waveform according to the measurement result.
  • the measurement may include path loss.
  • the network device may determine OFDM as the second target waveform; otherwise, the network device may determine DFT-s-OFDM as the first Two target waveforms.
  • the method further includes: sending, by the network device, fourth indication information, where the fourth indication information is used by the network device The terminal device is instructed to use the second target waveform for uplink transmission.
  • the network device may always send the fourth indication information to the terminal device after determining the second target waveform.
  • the network device may also send the fourth indication information to the terminal device when the second target waveform meets a preset condition, for example, the second target waveform is different from the first target waveform.
  • the first indication information occupies at least two bits.
  • the at least two uplink selectable waveforms comprise: OFDM and DFT-s-OFDM.
  • a terminal device for performing the method of any of the above first aspect or any of the possible implementations of the first aspect.
  • the terminal device comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a network device for performing the method of any of the foregoing second aspect or any of the possible implementations of the second aspect.
  • the network device comprises means for performing the method of any of the above-described second or second aspects of the second aspect.
  • another terminal device comprising: a storage unit for storing instructions for executing instructions stored in the memory, and a processor for executing instructions stored in the memory The execution causes the processor to perform the method of the first aspect or any possible implementation of the first aspect.
  • another network device including: a storage unit and a processor, the storage a unit for storing instructions for executing the instructions stored by the memory, and when the processor executes the instructions stored by the memory, the executing causes the processor to perform any of the possible implementations of the second aspect or the second aspect The method in .
  • a seventh aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a computer readable medium for storing a computer program comprising instructions for performing the method of the second aspect or any of the possible implementations of the second aspect.
  • the communication method, the terminal device, and the network device provided by the embodiment of the present invention report the current location area of the network device to the network device by using the terminal device, and the network device is at least according to the location area where the terminal device is currently located. Determining the first target waveform of the terminal device in the two uplink selectable waveforms, which can be applied to determine the waveform used in the uplink transmission in various scenarios, and in particular, can determine the uplink of the terminal device when the terminal device is not in the RRC connected state.
  • the waveform used for transmission for example, the terminal device initially accesses the network device or the terminal device requests uplink scheduling, thereby improving system performance.
  • FIG. 1 is a schematic diagram of a wireless communication system to which an embodiment of the present invention is applied.
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a network device according to an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of another terminal device according to an embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of another network device according to an embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Global Interconnect Microwave access
  • FIG. 1 shows a wireless communication system 100 to which an embodiment of the present invention is applied.
  • the wireless communication system 100 can include a network device 110.
  • Network device 100 can be a device that communicates with a terminal device.
  • Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area.
  • the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device can be a relay station, an access point, an in-vehicle device, a wearable device, A network side device in a future 5G network or a network device in a publicly available Public Land Mobile Network (PLMN) in the future.
  • PLMN Public Land Mobile Network
  • the wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110.
  • Terminal device 120 can be mobile or fixed.
  • the terminal device 120 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • the uplink and downlink transmissions may be performed between the network device 110 and the terminal device 120.
  • the wireless communication system 100 may support at least two waveforms for uplink transmission.
  • the waveform supported by the wireless communication system 100 may include orthogonal frequency division multiplexing. (Orthogonal Frequency Division Multiplexing, OFDM, or Discrete Fourier Transform-spreading-OFDM (DFT-s-OFDM), or other waveforms, which are not limited in this embodiment of the present invention.
  • OFDM Orthogonal Frequency Division Multiplexing
  • DFT-s-OFDM Discrete Fourier Transform-spreading-OFDM
  • the network device 110 may determine a waveform used by the current uplink transmission from among the at least two uplink selectable waveforms supported.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device. The embodiment of the invention does not limit this.
  • the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like.
  • network entities such as a network controller, a mobility management entity, and the like.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • FIG. 2 is a schematic flowchart of a communication method 200 according to an embodiment of the present invention. The method 200 can be applied to the wireless communication system 100 shown in FIG.
  • the terminal device sends the first indication information to the network device, where the first indication information is used to indicate a location area where the terminal device is currently located.
  • the location area where the terminal device is currently located may refer to a location area where the terminal device is currently located in a cell managed by the network device.
  • the location area in the embodiment of the present invention may be related to the transmit power used by the terminal device, but the embodiment of the present invention is not limited thereto.
  • the coverage of the network device may be divided into the following three location areas: a cell center area, a cell edge area, and other areas except the cell center area and the cell edge area, where the other area may be located. Between the central area and the cell edge area.
  • the location area where the terminal device is currently located may be specifically: a cell center area, a cell edge area, or an area between the cell center area and the cell edge area.
  • 2 bits are used in the first indication information to indicate a location area where the terminal device is currently located.
  • 00 indicates that the terminal device is currently in the cell center area
  • 11 indicates that the terminal device is currently in the cell edge area
  • 01 indicates that the terminal device is currently in the cell center area and the cell edge area
  • 10 may be in the reserved state, but
  • the embodiment does not limit the correspondence between the bit and the location area.
  • the location area where the terminal device is currently located may be indicated by other numbers of bits, which is not limited in this embodiment of the present invention.
  • the coverage of the network device may be divided into two location areas, such as a cell edge area and other areas except the cell edge area, or a cell center area and other areas than the cell center area.
  • the coverage of the network device may be divided into other number of location areas, which is not limited in this embodiment of the present invention.
  • the terminal device can determine the location area where the user is currently located, and report the location area where the user is currently located to the network device. Specifically, the terminal device can determine the location area where the user is currently located in various manners. For example, the terminal device can measure the downlink reference signal sent by the network device, and determine the location area where the user is currently located according to the result of the measurement. As an example, the result of the measurement may include at least one of: path loss, Reference Signal Received Power (RSRP), and Reference Signal Received Quality (RSRQ), or the measurement The result may also include other parameters, which are not limited in the embodiment of the present invention.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • the terminal device can determine the current location area based on the measured path loss.
  • the terminal device may determine that the current cell center region is present; if the path loss meets the second threshold condition, for example The path loss is higher than the second threshold, where the second threshold is greater than the first threshold, the terminal device may determine that the cell edge region is currently located; if the path loss is located at the first threshold And between the second threshold, the terminal device may determine that it is currently located between the cell center area and the cell edge area.
  • the first threshold condition and the second threshold condition may be defined in a protocol, or indicated by the network device by sending a third indication information to the terminal device, where the third indication information may be in a UE proprietary letter. It can be carried in the broadcast, and can also be carried in the broadcast message, which is not limited in this embodiment of the present invention.
  • the terminal device may always report its current location area to the network device, or report the current location to the network device only under certain circumstances.
  • the location area at the location For example, the terminal device may report the current location area to the network device only when it is determined that it is currently in the cell center area; for example, the terminal device may store information of the location area reported to the network device last time, and only When the determined current location area is different from the last reported location area, the current location area is reported to the network device.
  • the triggering condition that the terminal device reports the location area of the network device to the network device may be defined in the protocol, or may be pre-configured by the network device, for example, in a broadcast message, which is not limited in this embodiment of the present disclosure. .
  • the terminal device may actively send the first indication information to the network device.
  • the terminal device may send the first indication information to the network device when there is uplink data to be sent, or when the network device is initially accessed.
  • the terminal device may periodically report the location area that the user is currently located to the network device, which is not limited in this embodiment of the present invention.
  • the terminal device may send the first indication information to the network device when receiving the indication of the network device, where the embodiment of the present invention is not limited thereto.
  • the terminal device may send the first indication information to the network device during random access to the network device.
  • the terminal device may carry the first indication information in a random access request sent to the network device.
  • the terminal device may report the location area where it is currently located by attaching information bits after the preamble in the random access request.
  • the random access request may carry the preamble and the first indication information, where the bit occupied by the first indication information may follow the preamble.
  • the first indication information may also be located at other locations of the preamble. The location relationship between the preamble and the first indication information is not limited in the embodiment of the present invention.
  • the terminal device may indicate the location area that the user is currently located by carrying a different preamble in the random access request.
  • the random access request carrying the first indication information may be specifically: the random The access request carries a preamble corresponding to a location area in which the terminal device is currently located.
  • the corresponding relationship between the preamble or the preamble set and the location area may be defined in the protocol, or may be pre-configured by the network device, which is not limited by the embodiment of the present invention.
  • the terminal device may determine a preamble corresponding to the location area where the user is currently located from the plurality of optional preambles, and send the preamble to the network device, and accordingly, the network device may receive the The preamble and the correspondence between the preamble or the preamble set and the location area determine the location area where the terminal device is currently located, and the embodiment of the present invention is not limited thereto.
  • the terminal device may report the location area where the user is currently located to the network device in the process of requesting the uplink scheduling. For example, the terminal device may send a scheduling request to the network device, where the scheduling request carries the first indication information.
  • a scheduling request that currently has only one bit can be extended, for example, by extending the scheduling request to two. The upper bit, wherein some or all of the bits in the scheduling request may be used to carry the first indication information, but the embodiment of the present invention is not limited thereto.
  • the network device determines the first target waveform from the at least two uplink selectable waveforms according to the location area where the terminal device is currently located.
  • the at least two uplink selectable waveforms may include OFDM and DFT-s-OFDM, or may also include other types of waveforms, which are not limited by the embodiment of the present invention.
  • the network device can determine OFDM as the first target waveform.
  • the network device may determine DFT-s-OFDM as the first target waveform.
  • the network device may determine OFDM or DFT-s-OFDM as the first target waveform, or may combine the The first target waveform is determined from the at least two optional uplink waveforms, for example, the first target waveform may be determined according to the measurement result of the uplink reference signal sent by the terminal device, and the implementation of the present invention is implemented. This example does not limit this.
  • the network device sends second indication information to the terminal device, where the second indication information is used to indicate the first target waveform.
  • the network device may send a random access response to the terminal device, where the random access response carries the The second indication information, but the embodiment of the invention is not limited thereto.
  • the network device may send an uplink grant (UL grant) to the terminal device, where the uplink grant carries the second indication Information, but the embodiment of the invention is not limited thereto.
  • UL grant uplink grant
  • the second indication information may further be used to indicate the terminal.
  • the device sends an uplink reference signal to the network device, but the embodiment of the present invention is not limited thereto.
  • the terminal device performs uplink transmission using the first target waveform.
  • the terminal device may send, by using the first target waveform, an uplink reference signal, such as a sounding reference signal, to the network device.
  • an uplink reference signal such as a sounding reference signal
  • SRS Sounding Reference Signal
  • the network device may measure the uplink reference signal sent by the terminal device, and determine a second target waveform from the at least two uplink selectable waveforms according to the measured result, where the second target waveform may be the same A target waveform is the same or different.
  • the measurement result obtained by the network device may include path loss, and the network device may determine the second target waveform in the following manner: if the path loss is lower than a preset threshold, the network device may OFDM is determined to be the second target waveform; otherwise, the network device can determine DFT-s-OFDM as the second target waveform.
  • the measurement result obtained by the network device may also include other parameters. The manner in which the network device determines the second target waveform according to the measurement result is not limited in the embodiment of the present invention.
  • the network device may send fourth indication information to the terminal device, where the fourth indication information may be used to indicate the second target waveform.
  • the terminal device can receive the fourth indication information sent by the network device, and use the second target waveform to perform uplink transmission.
  • the network device may send the fourth indication information to the terminal device regardless of whether the second target waveform and the first target waveform are the same. At this time, the terminal device may determine the second target waveform according to the received fourth indication information.
  • the network device may also send the fourth indication information to the terminal device only if the second target waveform and the first target waveform are different.
  • the terminal device may perform uplink transmission by using the second target waveform indicated by the fourth indication information when receiving the fourth indication information, and still adopting the fourth indication information when the fourth indication information is not received.
  • the first target waveform is uplinked.
  • the terminal device may start the timer when receiving the second indication information or when sending the uplink reference signal to the network device, if the fourth indication information is not received when the timer expires.
  • the first target waveform is used for uplink transmission, where the timer may be specified by a protocol, or configured by a network device, for example, the network device indicates in the second indication information, but the embodiment of the present invention does not Limited to this.
  • the network device when determining the waveform used in the uplink transmission, the network device needs to measure the uplink reference signal sent by the terminal device. However, when the terminal device initially requests access to the network device or requests an uplink scheduling request from the network device, the network device cannot measure the uplink reference signal and determine the waveform used for the uplink transmission. In the communication method provided by the embodiment of the present invention, the terminal device reports the current location area to the network device, and the network device determines the terminal from at least two uplink selectable waveforms according to the current location area of the terminal device.
  • First target wave of the device The waveform can be applied to determine the waveform used for uplink transmission in various scenarios, especially when the terminal device is not in the RRC connected state, and can still determine the waveform used for the uplink transmission of the terminal device, for example, the terminal device initially accesses the network device or the terminal.
  • the device requests uplink scheduling to improve system performance.
  • FIG. 3 is a schematic diagram of a terminal device 300 according to an embodiment of the present invention.
  • the terminal device 300 includes:
  • the sending unit 310 is configured to send the first indication information to the network device, where the first indication information is used to indicate a location area where the terminal device 300 is currently located;
  • the receiving unit 320 is configured to receive the second indication information that is sent by the network device, where the second indication information is used to indicate that the network device determines, according to the first indication information sent by the sending unit 310, from the at least two uplink selectable waveforms. A target waveform.
  • the sending unit 310 is further configured to perform uplink transmission by using the first target waveform indicated by the second indication information received by the receiving unit 320.
  • the location area where the terminal device 300 is currently located includes: a cell center area, a cell edge area, or an area between the cell center area and the cell edge area.
  • the sending unit 310 is specifically configured to send a random access request to the network device, where the random access request carries the first indication information.
  • the receiving unit 320 is specifically configured to receive a random access response sent by the network device, where the random access response carries the second indication information.
  • the random access request further carries a preamble, where a bit occupied by the first indication information is immediately after the preamble.
  • the terminal device 300 further includes: a first determining unit, configured to: from the at least two preambles according to the correspondence between the location area and the preamble, before the sending unit 310 sends the first indication information to the network device A preamble corresponding to a location area in which the terminal device 300 is currently located is determined in the code.
  • a first determining unit configured to: from the at least two preambles according to the correspondence between the location area and the preamble, before the sending unit 310 sends the first indication information to the network device A preamble corresponding to a location area in which the terminal device 300 is currently located is determined in the code.
  • the random access request carries the first indication information, and may include: the random access request carries the preamble determined by the determining unit.
  • the sending unit 310 is specifically configured to send a scheduling request to the network device, where the scheduling request carries the first indication information.
  • the receiving unit 320 is specifically configured to receive an uplink grant sent by the network device, where the uplink grant carries the second indication information.
  • the terminal device 300 further includes:
  • a measuring unit configured to measure, after the sending unit 310 sends the first indication information to the network device, the downlink reference signal sent by the network device;
  • the second determining unit is configured to determine, according to the measurement result obtained by the measuring unit, a location area where the terminal device 300 is currently located.
  • the second determining unit is specifically configured to determine a location area where the terminal device 300 is currently located by comparing the measurement result obtained by the measurement unit with at least two threshold conditions.
  • the receiving unit 320 is further configured to: before the second determining unit determines, according to the measurement result obtained by the measuring unit, the third indication information sent by the network device, before determining the location area where the terminal device 300 is currently located.
  • the third indication information is used to indicate the at least two threshold conditions.
  • the terminal receiving unit 320 is configured to receive a broadcast message sent by the network device, where the broadcast message carries the third indication information.
  • the second indication information is further used to indicate that the terminal device 300 sends an uplink reference signal to the network device.
  • the sending unit 310 is specifically configured to send, by using the first target waveform, an uplink reference signal to the network device according to the second indication information.
  • the receiving unit 320 is further configured to: receive fourth indication information that is sent by the network device, where the fourth indication information is used to indicate that the network device determines, according to the uplink reference signal, the at least two uplink selectable waveforms. Second target waveform;
  • the sending unit 310 is further configured to perform uplink transmission by using the second target waveform indicated by the fourth indication information received by the receiving unit 320.
  • the first indication information occupies at least two bits.
  • the at least two uplink selectable waveforms comprise: OFDM and DFT-s-OFDM.
  • the terminal device 300 herein is embodied in the form of a functional unit.
  • the term "unit” herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or a group). Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality.
  • ASIC application specific integrated circuit
  • the terminal device may be specifically the terminal device in the foregoing method embodiment, and the terminal device 300 may be used to perform various processes and/or steps corresponding to the terminal device in the foregoing method embodiment. To avoid repetition, details are not described herein again.
  • FIG. 4 is a schematic diagram of a network device 400 provided by an embodiment of the present invention.
  • the network device 400 includes:
  • the receiving unit 410 is configured to receive first indication information that is sent by the terminal device, where the first indication information is used to indicate a location area where the terminal device is currently located;
  • the processing unit 420 is configured to determine, according to the location area indicated by the first indication information received by the receiving unit 410, the first target waveform from the at least two uplink selectable waveforms;
  • the sending unit 430 is configured to send the second indication information to the terminal device, where the second indication information is used to indicate that the terminal device performs uplink transmission by using the first target waveform determined by the processing unit 420.
  • the location area where the terminal device is currently located includes: a cell center area, a cell edge area, or an area between the cell center area and the cell edge area.
  • the receiving unit 410 is specifically configured to receive a random access request sent by the terminal device, where the random access request carries the first indication information.
  • the sending unit 430 may be specifically configured to send a random access response to the terminal device, where the random access response carries the second indication information.
  • the random access request further carries a preamble, where a bit occupied by the first indication information is immediately after the preamble.
  • the random access request carries the first indication information, including: the random access request carries a preamble corresponding to a location area where the terminal device is currently located.
  • the receiving unit 410 is specifically configured to receive a scheduling request sent by the terminal device, where the scheduling request carries the first indication information.
  • the sending unit 430 may be specifically configured to send an uplink grant to the terminal device, where the uplink grant carries the second indication information.
  • the sending unit 430 is further configured to: before the receiving unit 410 receives the first indication information sent by the terminal device, send a downlink reference signal to the terminal device, where the downlink reference signal is used by the terminal device to determine that the terminal device is currently located. Location area.
  • the sending unit 430 is further configured to: before the receiving unit 410 receives the first indication information sent by the terminal device, send, to the terminal device, third indication information, where the third indication information is used by And indicating at least two threshold conditions, the at least two threshold conditions are used by the terminal device to determine a current location area according to the measurement result of the downlink reference signal.
  • the sending unit 430 is specifically configured to send a broadcast message to the terminal device, where the broadcast message carries the third indication information.
  • the processing unit 420 is specifically configured to: if the first indication information indicates that the terminal device is currently between the cell edge area and the cell center area, the DFT-s-OFDM in the at least two uplink selectable waveforms Determined as the first target waveform.
  • the second indication information is further used to indicate that the terminal device sends an uplink reference signal to the network device.
  • the receiving unit 410 is further configured to receive an uplink reference signal that is sent by the terminal device by using the first target waveform.
  • the processing unit 420 is further configured to determine a second target waveform from the at least two uplink selectable waveforms according to the uplink reference signal received by the receiving unit 410.
  • the processing unit 420 may perform measurement on the received uplink reference signal, and determine a second target waveform from the at least two uplink selectable waveforms according to the measurement result.
  • the measurement may include path loss.
  • the processing unit 420 is specifically configured to:
  • DFT-s-OFDM in the at least two uplink selectable waveforms is determined as the second target waveform.
  • the sending unit 430 is further configured to send the fourth indication information to the terminal device, where the fourth indication information is used to indicate that the terminal device uses the second target waveform for uplink transmission.
  • the first indication information occupies at least two bits.
  • the at least two uplink selectable waveforms comprise: OFDM and DFT-s-OFDM.
  • the network device 400 herein is embodied in the form of a functional unit.
  • the term "unit” herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or a group). Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality.
  • ASIC application specific integrated circuit
  • the network device 400 may be specifically configured as the network device in the foregoing method embodiment.
  • the network device 400 may be used to perform various processes and/or steps corresponding to the network device in the foregoing method embodiments. To avoid repetition, details are not described herein again.
  • FIG. 5 is a schematic diagram of a terminal device 500 according to an embodiment of the present invention.
  • the terminal device 500 includes:
  • the transmitter 510 is configured to send, to the network device, first indication information, where the first indication information is used to indicate a location area where the terminal device 500 is currently located;
  • the receiver 520 is configured to receive the second indication information that is sent by the network device, where the second indication information is used to indicate that the network device determines, according to the first indication information sent by the transmitter 510, from the at least two uplink selectable waveforms. A target waveform.
  • the transmitter 510 is further configured to perform uplink transmission by using the first target waveform indicated by the second indication information received by the receiver 520.
  • the location area where the terminal device 500 is currently located includes: a cell center area, a cell edge area, or an area between the cell center area and the cell edge area.
  • the sender 510 is specifically configured to send a random access request to the network device, where the random access request carries the first indication information.
  • the receiver 520 is specifically configured to receive a random access response sent by the network device, where the random access response carries the second indication information.
  • the random access request further carries a preamble, where a bit occupied by the first indication information is immediately after the preamble.
  • the terminal device 500 further includes: a processor, configured to: from the at least two preambles according to the correspondence between the location area and the preamble, before the transmitter 510 sends the first indication information to the network device A preamble corresponding to a location area in which the terminal device 500 is currently located is determined.
  • a processor configured to: from the at least two preambles according to the correspondence between the location area and the preamble, before the transmitter 510 sends the first indication information to the network device A preamble corresponding to a location area in which the terminal device 500 is currently located is determined.
  • the random access request carries the first indication information, and may include: the random access request carries a preamble determined by the processor.
  • the sender 510 is specifically configured to send a scheduling request to the network device, where the scheduling request carries the first indication information.
  • the receiver 520 is specifically configured to receive an uplink grant sent by the network device, where the uplink grant carries the second indication information.
  • the terminal device 500 further includes: a processor, configured to measure, after the transmitter 510 sends the first indication information to the network device, the downlink reference signal sent by the network device, And determining the location area where the terminal device 500 is currently located according to the measurement result.
  • a processor configured to measure, after the transmitter 510 sends the first indication information to the network device, the downlink reference signal sent by the network device, And determining the location area where the terminal device 500 is currently located according to the measurement result.
  • the processor is specifically configured to determine a location area where the terminal device 500 is currently located by comparing the measurement result with at least two threshold conditions.
  • the receiver 520 is further configured to: before determining the location area where the terminal device 500 is currently located, according to the measurement result, receive third indication information sent by the network device, where the third indication information is used to indicate the At least two threshold conditions.
  • the terminal receiver 520 is specifically configured to receive a broadcast message sent by the network device, where the broadcast message carries the third indication information.
  • the second indication information is further used to indicate that the terminal device 500 sends an uplink reference signal to the network device.
  • the transmitter 510 is specifically configured to send, by using the first target waveform, an uplink reference signal to the network device according to the second indication information.
  • the receiver 520 is further configured to: receive fourth indication information that is sent by the network device, where the fourth indication information is used to indicate that the network device determines, according to the uplink reference signal, the at least two uplink selectable waveforms. Second target waveform;
  • the transmitter 510 is further configured to perform uplink transmission by using the second target waveform indicated by the fourth indication information received by the receiver 520.
  • the first indication information occupies at least two bits.
  • the at least two uplink selectable waveforms comprise: OFDM and DFT-s-OFDM.
  • terminal device 500 herein may be specifically the terminal device in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the terminal device in the foregoing method embodiments.
  • the terminal device 500 may further include a memory, which may include a read only memory and a random access memory, and provides instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the processor can be used to execute instructions stored in the memory, and when the processor executes the instructions, the processor can perform the steps corresponding to the terminal device in the above method embodiments.
  • FIG. 6 is a schematic diagram of a network device 600 provided by an embodiment of the present invention.
  • the network device 600 includes:
  • the receiver 610 is configured to receive first indication information that is sent by the terminal device, where the first indication information is used to indicate a location area where the terminal device is currently located;
  • the processor 620 is configured to determine, according to the location area indicated by the first indication information received by the receiver 610, the first target waveform from the at least two uplink selectable waveforms;
  • the transmitter 630 is configured to send the second indication information to the terminal device, where the second indication information is used to indicate that the terminal device performs uplink transmission by using the first target waveform determined by the processor 620.
  • the location area where the terminal device is currently located includes: a cell center area, a cell edge area, or an area between the cell center area and the cell edge area.
  • the receiver 610 is specifically configured to receive a random access request sent by the terminal device, where the random access request carries the first indication information.
  • the transmitter 630 may be specifically configured to send a random access response to the terminal device, where the random access response carries the second indication information.
  • the random access request further carries a preamble, where a bit occupied by the first indication information is immediately after the preamble.
  • the random access request carries the first indication information, including: the random access request carries a preamble corresponding to a location area where the terminal device is currently located.
  • the receiver 610 is specifically configured to receive a scheduling request sent by the terminal device, where the scheduling request carries the first indication information.
  • the transmitter 630 may be specifically configured to send an uplink grant to the terminal device, where the uplink grant carries the second indication information.
  • the transmitter 630 is further configured to send, after the receiver 610 receives the first indication information sent by the terminal device, a downlink reference signal, where the downlink reference signal is used by the terminal device to determine that the terminal device is currently located. Location area.
  • the transmitter 630 is further configured to send, after the receiver 610 receives the first indication information sent by the terminal device, third indication information, where the third indication information is used to indicate at least two thresholds.
  • the at least two threshold conditions are used by the terminal device to determine a current location area according to the measurement result of the downlink reference signal.
  • the transmitter 630 is specifically configured to send a broadcast message to the terminal device, where the broadcast message carries the third indication information.
  • the processor 620 is specifically configured to: if the first indication information indicates that the terminal device is currently between the cell edge area and the cell center area, the DFT-s-OFDM in the at least two uplink selectable waveforms Determined as the first target waveform.
  • the first indication information indicates that the terminal device is currently in a cell edge area and is small
  • the second indication information is further used to indicate that the terminal device sends an uplink reference signal to the network device.
  • the receiver 610 is further configured to receive an uplink reference signal that is sent by the terminal device by using the first target waveform.
  • the processor 620 is further configured to determine a second target waveform from the at least two uplink selectable waveforms according to the uplink reference signal received by the receiver 610.
  • the processor 620 can measure the received uplink reference signal, and determine a second target waveform from the at least two uplink selectable waveforms according to the measurement result.
  • the measurement may include path loss.
  • the processor 620 is specifically configured to: if the path loss is lower than a preset threshold, determine the OFDM in the at least two uplink selectable waveforms as the second target waveform; otherwise, DFT-s-OFDM in the at least two uplink selectable waveforms is determined as the second target waveform.
  • the transmitter 630 is further configured to send the fourth indication information to the terminal device, where the fourth indication information is used to indicate that the terminal device uses the second target waveform for uplink transmission.
  • the first indication information occupies at least two bits.
  • the at least two uplink selectable waveforms comprise: OFDM and DFT-s-OFDM.
  • network device 600 herein may be specifically the network device in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the network device in the foregoing method embodiments.
  • network device 600 can also include a memory, which can include read only memory and random access memory, and provides instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the processor can be used to execute instructions stored in the memory, and when the processor executes the instructions, the processor can perform the steps corresponding to the terminal device in the above method embodiments.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present application may be in essence or part of the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本申请公开了一种通信方法、终端设备和网络设备，能够适用于各种场景下确定终端设备的上行传输所采用的波形。该方法包括：终端设备向网络设备发送第一指示信息，该第一指示信息用于指示该终端设备当前所处的位置区域；该终端设备接收该网络设备发送的第二指示信息，该第二指示信息用于指示该网络设备根据该终端设备当前所处的位置区域从至少两个上行可选波形中确定的第一目标波形；该终端设备采用该第一目标波形进行上行传输。

Description

通信方法、终端设备和网络设备 技术领域
本发明实施例涉及通信领域，并且更具体地，涉及通信方法、终端设备和网络设备。
背景技术
在现有的无线通信系统中，例如，长期演进(Long Term Evolution，LTE)系统中，终端设备始终采用同一种波形(waveform)进行上行传输。随着技术的发展，在未来的无线通信系统中，上行传输可以支持至少两种波形，这样，基站在进行上行调度时需要决定具体采用哪种波形。
然而，基站在决定上行传输采用的波形时，一般是需要测量终端设备发送的上行参考信号的。这样，如果终端设备处于无线资源控制(Radio Resource Control，RRC)连接态(RRC connected mode),长时间持续地向基站发送上行参考信号会大量耗费终端设备的电量。而如果终端设备不向基站发送上行参考信号，又可能使基站不能即时跟踪终端设备上行参考信号的变化，进而导致对上行传输的错误调度。
发明内容
本发明实施例提供一种通信方法、终端设备和网络设备，能够适用于各种场景下确定终端设备的上行传输所采用的波形。
第一方面，提供了一种通信方法，包括：终端设备向网络设备发送第一指示信息，该第一指示信息用于指示该终端设备当前所处的位置区域；该终端设备接收该网络设备发送的第二指示信息，该第二指示信息用于指示该网络设备根据该终端设备当前所处的位置区域从至少两个上行可选波形中确定的第一目标波形；该终端设备采用该第一目标波形进行上行传输。
具体地，该终端设备当前所处的位置区域可以具体指终端设备当前在该网络设备管理的小区中所处的位置区域，该位置区域的划分可以依赖于终端设备的发射功率。
可选地，该终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
可选地，该终端设备可以在确定当前所处的位置区域之后，总是向网络设备发送该第一指示信息。
可选地，该终端设备也可以在确定当前所处的位置区域满足上报条件时，才向网络设备发送该第一指示信息。
该上报条件可以是协议定义的，或者在该终端设备向该网络设备发送该第一指示信息之前，该终端设备可以接收网络设备发送的指示信息，该指示信息用于指示该上报条件。
在第一方面的第一种可能的实现方式中，该终端设备向网络设备发送第一指示信息，包括：该终端设备向网络设备发送随机接入请求，该随机接入请求携带该第一指示信息。
此时，可选地，该终端设备接收网络设备发送的第二指示信息，可以包括：该终端设备接收网络设备发送的随机接入响应，该随机接入响应携带该第二指示信息。
结合第一方面的上述可能的实现方式，在第一方面的第二种可能的实现方式中，该随机接入请求还携带前导码，其中，该第一指示信息所占用的比特紧随该前导码之后。
此时，该随机接入请求携带前导码和第一指示信息。
结合第一方面的上述可能的实现方式，在第一方面的第三种可能的实现方式中，在该终端设备向网络设备发送第一指示信息之前，该方法还包括：该终端设备根据位置区域与前导码之间的对应关系，从至少两个前导码中确定与该终端设备当前所处的位置区域对应的前导码；该随机接入请求携带该第一指示信息，包括：该随机接入请求携带与该终端设备当前所处的位置区域所对应的前导码。
可选地，前导码或前导码集合与位置区域之间的对应关系可以在协议中定义，或者在该终端设备确定对应的前导码之前，该终端设备可以接收网络设备发送的指示信息，该指示信息用于指示前导码或前导码集合与位置区域之间的对应关系。
此时，网络设备可以根据随机接入请求中携带的前导码，确定该终端设备当前所处的位置区域。
这样，通过随机接入请求中携带的前导码来指示终端设备当前所处的位置区域，能够节约信令开销。
结合第一方面的上述可能的实现方式，在第一方面的第四种可能的实现方式中，该终端设备向网络设备发送第一指示信息，包括：该终端设备向网络设备发送调度请求，该调度请求携带该第一指示信息。
此时，可选地，该终端设备接收网络设备发送的第二指示信息，可以包括：该终端设备接收网络设备发送的上行授权，该上行授权携带该第二指示信息。
结合第一方面的上述可能的实现方式，在第一方面的第五种可能的实现方式中，在该终端设备向网络设备发送第一指示信息之前，该方法还包括：该终端设备对该网络设备发送的下行参考信号进行测量；该终端设备根据该测量的结果，确定该终端设备当前所处的位置区域。
结合第一方面的上述可能的实现方式，在第一方面的第六种可能的实现方式中，该终端设备根据该测量的结果，确定该终端设备当前所处的位置区域，包括：该终端设备通过激将该测量的结果与至少两个门限条件进行比较，确定该终端设备当前所处的位置区域。
可选地，若该测量的结果满足至少两个门限条件中的第一门限条件，例如，该测量得到的路径损耗低于第一门限值，该终端设备可以确定该终端设备当前处于小区中心区域。
可选地，若该测量的结果满足至少两个门限条件中的第二门限条件，例如，该测量得到的路径损耗高于第二门限值，该终端设备可以确定该终端设备当前处于小区边缘区域。
可选地，若该测量的结果既不满足该第一门限条件也不满足第二门限条件，例如，例如，该测量得到的路径损耗位于第一门限值和第二门限值之间，该终端设备可以确定该终端设备当前位于小区中心区域和小区边缘区域之间。
结合第一方面的上述可能的实现方式，在第一方面的第七种可能的实现方式中，在该终端设备根据该测量的结果，确定该终端设备当前所处的位置区域之前，该方法还包括：该终端设备接收该网络设备发送的第三指示信息，该第三指示信息用于指示该至少两个门限条件。
结合第一方面的上述可能的实现方式，在第一方面的第八种可能的实现方式中，该终端设备接收该网络设备发送的第三指示信息，包括：该终端设备接收该网络设备发送的广播消息，该广播消息携带该第三指示信息。
结合第一方面的上述可能的实现方式，在第一方面的第九种可能的实现方式中，若该第一指示信息指示该终端设备当前处于小区边缘区域和小区中心区域之间，该第二指示信息还用于指示该终端设备向该网络设备发送上行参考信号；该终端设备采用该第一目标波形进行上行传输，包括：该终端设备根据该第二指示信息，采用该第一目标波形向该网络设备发送上行参考信号。
可选地，若该第一指示信息指示该终端设备当前处于小区边缘区域和小区中心区域之间，该第一目标波形可以具体为该至少两个上行可选波形中的DFT-s-OFDM。
结合第一方面的上述可能的实现方式，在第一方面的第十种可能的实现方式中，该方法还包括：该终端设备接收该网络设备发送的第四指示信息，该第四指示信息用于指示该网络设备根据该上行参考信号从该至少两个上行可选波形中确定的第二目标波形；该终端设备采用该第二目标波形进行上行传输。
第二方面，提供了另一种通信方法，包括：网络设备接收终端设备发送的第一指示信息，该第一指示信息用于指示该终端设备当前所处的位置区域；该网络设备根据该终端设备当前所处的位置区域，从至少两个上行可选波形中确定第一目标波形；该网络设备向该终端设备发送第二指示信息，该第二指示信息用于指示该终端设备采用该第一目标波形进行上行传输。
在第二方面的第一种可能的实现方式中，该终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
结合第二方面的上述可能的实现方式，在第二方面的第二种可能的实现方式中，该网络设备接收终端设备发送的第一指示信息，包括：该网络设备接收终端设备发送的随机接入请求，该随机接入请求携带该第一指示信息。
此时，可选地，该网络设备向该终端设备发送第二指示信息，包括：该网络设备向该终端设备发送随机接入响应，该随机接入响应携带该第二指示信息。
结合第二方面的上述可能的实现方式，在第二方面的第三种可能的实现方式中，该随机接入请求还携带前导码，其中，该第一指示信息所占用的比特紧随该前导码之后。
结合第二方面的上述可能的实现方式，在第二方面的第四种可能的实现方式中，该随机接入请求携带该第一指示信息，包括：该随机接入请求携带与该终端设备当前所处的位置区域所对应的前导码。
此时，该网络设备可以根据该随机接入请求中携带的前导码，确定该终端设备当前所处的位置区域。
结合第二方面的上述可能的实现方式，在第二方面的第五种可能的实现方式中，该网络设备接收终端设备发送的第一指示信息，包括：该网络设备接收终端设备发送的调度请求，该调度请求携带该第一指示信息。
此时，可选地，该网络设备向该终端设备发送第二指示信息，包括：该网络设备向该终端设备发送上行授权，该上行授权携带该第二指示信息。
结合第二方面的上述可能的实现方式，在第二方面的第六种可能的实现方式中，在该网络设备接收终端设备发送的第一指示信息之前，该方法还包括：该网络设备向该终端设备发送下行参考信号，该下行参考信号用于该终端设备确定当前所处的位置区域。
结合第二方面的上述可能的实现方式，在第二方面的第七种可能的实现方式中，在该网络设备接收终端设备发送的第一指示信息之前，该方法还包括：该网络设备向该终端设备发送第三指示信息，该第三指示信息用于指示至少两个门限条件，该至少两个门限条件用于该终端设备根据该下行参考信号的测量结果确定当前所处的位置区域。
结合第二方面的上述可能的实现方式，在第二方面的第八种可能的实现方式中，该网络设备向该终端设备发送第三指示信息，包括：该网络设备向该终端设备发送广播消息，该广播消息携带该第三指示信息。
结合第二方面的上述可能的实现方式，在第二方面的第九种可能的实现方式中，该网络设备根据该终端设备当前所处的位置区域，从至少两个上行可选波形中确定第一目标波形，包括：若该第一指示信息指示该终端设备当前处于小区边缘区域和小区中心区域之间，将该至少两个上行可选波形中的DFT-s-OFDM确定为该第一目标波形。
结合第二方面的上述可能的实现方式，在第二方面的第十种可能的实现方式中，若该第一指示信息指示该终端设备当前处于小区边缘区域和小区中心区域之间，该第二指示信息还用于指示该终端设备向该网络设备发送上行参考信号；该方法还包括：该网络设备接收该终端设备采用该第一目标波形 发送的上行参考信号；该网络设备根据该终端设备发送的上行参考信号，从该至少两个上行可选波形中确定第二目标波形。
可选地，该网络设备可以对该终端设备发送的上行参考信号进行测量，并根据测量结果，确定该第二目标波形。
可选地，该测量结果可以包括路径损耗。此时，可选地，如果该路径损耗低于预设门限值，则该网络设备可以将OFDM确定为该第二目标波形；否则，该网络设备可以将DFT-s-OFDM确定为该第二目标波形。
结合第二方面的上述可能的实现方式，在第二方面的第十一种可能的实现方式中，该方法还包括：该网络设备向该终端设备发送第四指示信息，该第四指示信息用于指示该终端设备采用该第二目标波形进行上行传输。
可选地，该网络设备可以在确定该第二目标波形之后，总是向该终端设备发送该第四指示信息。
可选地，该网络设备也可以在该第二目标波形满足预设条件时，例如，该第二目标波形不同于该第一目标波形，才向该终端设备发送该第四指示信息。
在本发明实施例的某些方面，该第一指示信息占用至少两个比特。
在本发明实施例的某些方面，该至少两个上行可选波形包括：OFDM和DFT-s-OFDM。
第三方面，提供了一种终端设备，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。
具体地，该终端设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第四方面，提供了一种网络设备，用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。
具体地，该网络设备包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的单元。
第五方面，提供了另一种终端设备，包括：存储单元和处理器，该存储单元用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。
第六方面，提供了另一种网络设备，包括：存储单元和处理器，该存储 单元用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第二方面或第二方面的任意可能的实现方式中的方法。
第七方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
第八方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第二方面或第二方面的任意可能的实现方式中的方法的指令。
基于上述技术方案，本发明实施例提供的通信方法、终端设备和网络设备，通过终端设备向网络设备上报自己当前所处的位置区域，网络设备根据该终端设备当前所处的位置区域，从至少两个上行可选波形中确定该终端设备的第一目标波形，能够适用于各种场景下确定上行传输所采用的波形，特别是当终端设备未处于RRC连接态时仍能够确定终端设备的上行传输采用的波形，例如终端设备初始接入网络设备或者终端设备请求上行调度，从而提高系统性能。
附图说明
图1是本发明实施例应用的无线通信系统的示意图。
图2是本发明实施例提供的通信方法的示意性流程图。
图3是本发明实施例提供的终端设备的示意性框图。
图4是本发明实施例提供的网络设备的示意性框图。
图5是本发明实施例提供的另一终端设备的示意性框图。
图6是本发明实施例提供的另一网络设备的示意性框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，简称为“GSM”)系统、码分多址(Code Division Multiple Access，简称为“CDMA”)系统、宽带码分多址 (Wideband Code Division Multiple Access，简称为“WCDMA”)系统、通用分组无线业务(General Packet Radio Service，简称为“GPRS”)、长期演进(Long Term Evolution，简称为“LTE”)系统、LTE频分双工(Frequency Division Duplex，简称为“FDD”)系统、LTE时分双工(Time Division Duplex，简称为“TDD”)、通用移动通信系统(Universal Mobile Telecommunication System，简称为“UMTS”)、全球互联微波接入(Worldwide Interoperability for Microwave Access，简称为“WiMAX”)通信系统或未来的5G系统等。
图1示出了本发明实施例应用的无线通信系统100。该无线通信系统100可以包括网络设备110。网络设备100可以是与终端设备通信的设备。网络设备100可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备(例如UE)进行通信。可选地，该网络设备100可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备、未来5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
该无线通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。终端设备120可以是移动的或固定的。可选地，终端设备120可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
网络设备110和终端设备120之间可以进行上下行传输，其中，该无线通信系统100可以支持至少两种波形进行上行传输，例如，该无线通信系统100支持的波形可以包括正交频分复用(Orthogonal Frequency Division  Multiplexing，OFDM)或离散傅立叶变换扩展OFDM(Discrete Fourier Transform-spreading-OFDM,DFT-s-OFDM)，或者还可以包括其他波形，本发明实施例对此不作限定。在具体进行某一次上行传输时，网络设备110可以从支持的至少两种上行可选波形中确定当前的上行传输所采用的波形。
图1示例性地示出了一个网络设备和两个终端设备，可选地，该无线通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本发明实施例对此不做限定。
可选地，该无线通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本发明实施例对此不作限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
图2是本发明实施例的通信方法200的示意性流程图。该方法200可以适用于图1所示的无线通信系统100。
在S210中，终端设备向网络设备发送第一指示信息，其中，该第一指示信息用于指示该终端设备当前所处的位置区域。
在本发明实施例中，终端设备当前所处的位置区域可以指终端设备当前在网络设备管理的小区中所处的位置区域。可选地，考虑到上行传输采用的波形对发射功率的效率影响较大，本发明实施例中的位置区域可以与终端设备采用的发射功率相关，但本发明实施例不限于此。
作为一个可选实施例，可以将网络设备的覆盖范围分成以下三个位置区域：小区中心区域、小区边缘区域以及除了小区中心区域和小区边缘区域之外的其他区域，该其他区域可以位于该小区中心区域和小区边缘区域之间。此时，可选地，终端设备当前所处的位置区域可以具体为：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
此时，可选地，可以在该第一指示信息中采用2个比特指示该终端设备当前所处的位置区域。作为一个例子，00表示该终端设备当前处于小区中心区域，11表示该终端设备当前处于小区边缘区域，01表示该终端设备当前处于小区中心区域和小区边缘区域之间，10可以作为保留状态，但本发明实 施例对比特与位置区域之间的对应关系不作限定。可选地，也可以通过其他数量的比特来指示终端设备当前所处的位置区域，本发明实施例对此不作限定。
作为另一个可选实施例，可以将网络设备的覆盖范围分成两个位置区域，例如小区边缘区域和除了小区边缘区域以外的其他区域，或小区中心区域和除了小区中心区域以外的其他区域。或者，也可以将网络设备的覆盖范围分成其他数量的位置区域，本发明实施例对此不作限定。
在本发明实施例中，终端设备可以确定自己当前所处的位置区域，并且向网络设备上报自己当前所处的位置区域。具体地，终端设备可以通过多种方式确定自己当前所处的位置区域。例如，终端设备可以测量网络设备发送的下行参考信号，并且根据测量的结果确定自己当前所处的位置区域。作为一个例子，该测量的结果可以包括下列中的至少一种：路径损耗、参考信号接收功率(Reference Signal Received Power，RSRP)和参考信号接收质量(Reference Signal Received Quality，RSRQ)，或者该测量的结果也可以包括其他参数，本发明实施例对此不作限定。
以该测量的结果包括路径损耗作为例子，该终端设备可以根据测量得到的路径损耗，确定当前所处的位置区域。可选地，如果该路径损耗满足第一门限条件，例如，该路径损耗低于第一门限值，则该终端设备可以确定当前处于小区中心区域；如果该路径损耗满足第二门限条件，例如，该路径损耗高于第二门限值，其中，第二门限值大于该第一门限值，则该终端设备可以确定当前处于小区边缘区域；如果该路径损耗位于该第一门限值和该第二门限值之间，则该终端设备可以确定当前位于小区中心区域和小区边缘区域之间。可选地，该第一门限条件和该第二门限条件可以在协议中定义，或者由网络设备通过向终端设备发送第三指示信息来指示，其中，该第三指示信息可以在UE专有信令中携带，也可以在广播消息中携带，本发明实施例对此不作限定。
在本发明实施例中，该终端设备在确定当前所处的位置区域之后，可以总是向该网络设备上报自身当前的位置区域，也可以只有在特定情况下，才向网络设备上报自己当前所处的位置区域。例如，该终端设备可以只有在确定当前处于小区中心区域时，才向该网络设备上报当前所处的位置区域；再例如，该终端设备可以存储上次向网络设备上报的位置区域的信息，并且只 有在确定的当前所处的位置区域不同于上次上报的位置区域时，才向该网络设备上报当前所处的位置区域。可选地，该终端设备向网络设备上报自己当前所处的位置区域的触发条件可以在协议中定义，也可以由网络设备预先配置，例如在广播消息中配置，本发明实施例对此不作限定。
在本发明实施例中，终端设备可以主动向网络设备发送第一指示信息。例如，终端设备可以在有上行数据需要发送时，或者在初始接入该网络设备时，向网络设备发送第一指示信息。或者，终端设备也可以周期性地向网络设备上报自己当前所处的位置区域，本发明实施例对此不作限定。可选地，该终端设备也可以在接收到网络设备的指示时，向网络设备发送该第一指示信息，本发明实施例不限于此。
作为一个可选实施例，终端设备可以在随机接入该网络设备的过程中，向该网络设备发送该第一指示信息。例如，该终端设备可以在向网络设备发送的随机接入请求中携带该第一指示信息。
作为一个例子，终端设备可以通过在随机接入请求中的前导码后附着信息比特的方式上报自己当前所处的位置区域。此时，该随机接入请求可以携带前导码和该第一指示信息，其中，该第一指示信息占用的比特可以紧随该前导码之后。可选地，该第一指示信息也可以位于该前导码的其他位置，本发明实施例对前导码与该第一指示信息之间的位置关系不做限定。
作为另一个例子，终端设备可以通过在随机接入请求中携带不同的前导码，来指示自己当前所处的位置区域，相应地，该随机接入请求携带第一指示信息可以具体为：该随机接入请求携带与该终端设备当前所处的位置区域对应的前导码。其中，前导码或前导码集合与位置区域之间的对应关系可以在协议中定义，或者可以由网络设备预先配置，本发明实施例对此不作限定。此时，该终端设备可以从多个可选的前导码中确定与自己当前所处的位置区域对应的前导码，并且向该网络设备发送该前导码，相应地，该网络设备可以根据接收到的前导码以及前导码或前导码集合与位置区域之间的对应关系，确定该终端设备当前所处的位置区域，本发明实施例不限于此。
作为另一个可选实施例，终端设备可以在请求上行调度的过程中向网络设备上报自己当前所处的位置区域。例如，该终端设备可以向网络设备发送调度请求，其中，该调度请求携带该第一指示信息。作为一个可选例子，可以将当前只有一个比特的调度请求进行扩展，例如将调度请求扩展至两个以 上比特，其中，该调度请求中的部分或所有比特可以用于承载该第一指示信息，但本发明实施例不限于此。
在S220中，网络设备根据该终端设备当前所处的位置区域，从至少两个上行可选波形中确定第一目标波形。
作为一个可选实施例，该至少两个上行可选波形可以包括OFDM和DFT-s-OFDM，或者也可以包括其他类型的波形，本发明实施例对此不作限定。
作为一个例子，如果该终端设备当前处于小区中心区域，则该网络设备可以将OFDM确定为该第一目标波形。可选地，如果该终端设备当前处于小区边缘区域，则该网络设备可以将DFT-s-OFDM确定为该第一目标波形。可选地，如果该终端设备当前所处的位置区域位于小区边缘区域和小区中心区域之间，则该网络设备可以将OFDM或DFT-s-OFDM确定为该第一目标波形，或者可以结合该终端设备的其他信息，从该至少两个可选上行波形中确定该第一目标波形，例如，可以结合对该终端设备发送的上行参考信号的测量结果，确定该第一目标波形，本发明实施例对此不作限定。
在S230中，网络设备向终端设备发送第二指示信息，该第二指示信息用于指示该第一目标波形。
可选地，如果该网络设备接收到携带该第一指示信息的随机接入请求，则在S230中，该网络设备可以向该终端设备发送随机接入响应，该随机接入响应中携带该第二指示信息，但本发明实施例不限于此。
可选地，如果该网络设备接收到携带该第一指示信息的调度请求，则在S230中，该网络设备可以向该终端设备发送上行授权(UL grant)，该上行授权中携带该第二指示信息，但本发明实施例不限于此。
作为另一个可选实施例，如果该第一指示信息用于指示该终端设备当前所处的位置区域位于小区中心区域和小区边缘区域之间，则该第二指示信息还可以用于指示该终端设备向该网络设备发送上行参考信号，但本发明实施例不限于此。
在S240中，终端设备采用第一目标波形进行上行传输。
可选地，如果该第二指示信息还用于指示该终端设备发送上行参考信号，则在S240中，该终端设备可以采用该第一目标波形向该网络设备发送上行参考信号，例如探测参考信号(Sounding Reference Signal，SRS)。相应 地，该网络设备可以对该终端设备发送的上行参考信号进行测量，并根据测量的结果从该至少两个上行可选波形中确定第二目标波形，其中，该第二目标波形可以与该第一目标波形相同或不同。
作为一个可选例子，该网络设备得到的测量结果可以包括路径损耗，并且该网络设备可以采用以下方式确定第二目标波形：如果该路径损耗低于预设门限值，则该网络设备可以将OFDM确定为该第二目标波形；否则，该网络设备可以将DFT-s-OFDM确定为该第二目标波形。可选地，该网络设备得到的测量结果也可以包括其他参数，本发明实施例对网络设备根据测量结果确定第二目标波形的方式不做限定。
可选地，在确定该第二目标波形之后，该网络设备可以向该终端设备发送第四指示信息，其中，该第四指示信息可以用于指示该第二目标波形。相应地，该终端设备可以接收该网络设备发送的第四指示信息，并采用该第二目标波形进行上行传输。
在本发明实施例中，该网络设备可以在无论该第二目标波形和该第一目标波形是否相同的情况下，均向该终端设备发送该第四指示信息。此时，该终端设备可以根据接收到的第四指示信息，确定该第二目标波形。
作为另一个可选实施例，该网络设备也可以只在该第二目标波形和该第一目标波形不同的情况下，向该终端设备发送该第四指示信息。此时，该终端设备可以在接收到该第四指示信息时，采用该第四指示信息指示的第二目标波形进行上行传输，而在未接收到该第四指示信息的情况下，仍采用该第一目标波形进行上行传输。此时，可选地，该终端设备可以在接收到该第二指示信息时或者在向网络设备发送上行参考信号时，开启定时器，如果在定时器超时时仍未接收到该第四指示信息，则采用该第一目标波形进行上行传输，其中，该定时器可以是协议规定的，或者是网络设备配置的，例如，该网络设备在第二指示信息中指示的，但本发明实施例不限于此。
在现有技术中，网络设备在确定上行传输采用的波形时，需要测量终端设备发送的上行参考信号。然而，当终端设备在初始接入网络设备或在向网络设备申请上行调度(scheduling request)时，网络设备无法测量上行参考信号并确定上行传输采用的波形。而本发明实施例提供的通信方法，通过终端设备向网络设备上报自己当前所处的位置区域，网络设备根据该终端设备当前所处的位置区域，从至少两个上行可选波形中确定该终端设备的第一目标波 形，能够适用于各种场景下确定上行传输所采用的波形，特别是当终端设备未处于RRC连接态时仍能够确定终端设备的上行传输采用的波形，例如终端设备初始接入网络设备或者终端设备请求上行调度，从而提高系统性能。
应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
图3示意性地示出了本发明实施例提供的终端设备300。该终端设备300包括：
发送单元310，用于向网络设备发送第一指示信息，该第一指示信息用于指示该终端设备300当前所处的位置区域；
接收单元320，用于接收该网络设备发送的第二指示信息，该第二指示信息用于指示该网络设备根据发送单元310发送的第一指示信息从至少两个上行可选波形中确定的第一目标波形。
该发送单元310还用于采用该接收单元320接收到的该第二指示信息指示的该第一目标波形进行上行传输。
可选地，该终端设备300当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
可选地，该发送单元310具体用于向网络设备发送随机接入请求，该随机接入请求携带该第一指示信息。
此时，可选地，该接收单元320具体用于接收网络设备发送的随机接入响应，该随机接入响应携带该第二指示信息。
可选地，该随机接入请求还携带前导码，其中，该第一指示信息所占用的比特紧随该前导码之后。
可选地，该终端设备300还包括：第一确定单元，用于在该发送单元310向网络设备发送第一指示信息之前，根据位置区域与前导码之间的对应关系，从至少两个前导码中确定与该终端设备300当前所处的位置区域对应的前导码。
此时，该随机接入请求携带该第一指示信息，可以包括：该随机接入请求携带该确定单元确定的前导码。
可选地，该发送单元310具体用于向网络设备发送调度请求，该调度请求携带该第一指示信息。
此时，可选地，该接收单元320具体用于接收网络设备发送的上行授权，该上行授权携带该第二指示信息。
可选地，该终端设备300还包括：
测量单元，用于在该发送单元310向网络设备发送第一指示信息之前，对该网络设备发送的下行参考信号进行测量；
第二确定单元，用于根据该测量单元得到的测量结果，确定该终端设备300当前所处的位置区域。
可选地，该第二确定单元具体用于通过将该测量单元得到的测量结果与至少两个门限条件进行比较，确定该终端设备300当前所处的位置区域。
可选地，该接收单元320还用于：在该第二确定单元根据该测量单元得到的测量结果，确定该终端设备300当前所处的位置区域之前，接收该网络设备发送的第三指示信息，该第三指示信息用于指示该至少两个门限条件。
可选地，该终接收单元320具体用于接收该网络设备发送的广播消息，该广播消息携带该第三指示信息。
可选地，若该第一指示信息指示该终端设备300当前处于小区边缘区域和小区中心区域之间，该第二指示信息还用于指示该终端设备300向该网络设备发送上行参考信号；
相应地，该发送单元310具体用于根据该第二指示信息，采用该第一目标波形向该网络设备发送上行参考信号。
可选地，该接收单元320还用于：接收该网络设备发送的第四指示信息，该第四指示信息用于指示该网络设备根据该上行参考信号从该至少两个上行可选波形中确定的第二目标波形；
相应地，该发送单元310还用于采用该接收单元320接收到的第四指示信息指示的该第二目标波形，进行上行传输。
可选地，该第一指示信息占用至少两个比特。
可选地，该至少两个上行可选波形包括：OFDM和DFT-s-OFDM。
应理解，这里的终端设备300以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(Application Specific Integrated Circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，终端设备 300可以具体为上述方法实施例中的终端设备，终端设备300可以用于执行上述方法实施例中与终端设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
图4示意性地示出了本发明实施例提供的网络设备400。该网络设备400包括：
接收单元410，用于接收终端设备发送的第一指示信息，该第一指示信息用于指示该终端设备当前所处的位置区域；
处理单元420，用于根据该接收单元410接收到的该第一指示信息指示的位置区域，从至少两个上行可选波形中确定第一目标波形；
发送单元430，用于向该终端设备发送第二指示信息，该第二指示信息用于指示该终端设备采用该处理单元420确定的第一目标波形进行上行传输。
可选地，该终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
可选地，该接收单元410具体用于接收终端设备发送的随机接入请求，该随机接入请求携带该第一指示信息。
此时，可选地，该发送单元430可以具体用于向终端设备发送随机接入响应，该随机接入响应携带该第二指示信息。
可选地，该随机接入请求还携带前导码，其中，该第一指示信息所占用的比特紧随该前导码之后。
可选地，该随机接入请求携带该第一指示信息，包括：该随机接入请求携带与该终端设备当前所处的位置区域所对应的前导码。
可选地，该接收单元410具体用于接收终端设备发送的调度请求，该调度请求携带该第一指示信息。
此时，可选地，该发送单元430可以具体用于向终端设备发送上行授权，该上行授权携带该第二指示信息。
可选地，该发送单元430还用于：在该接收单元410接收终端设备发送的第一指示信息之前，向该终端设备发送下行参考信号，该下行参考信号用于该终端设备确定当前所处的位置区域。
可选地，该发送单元430还用于：在该接收单元410接收终端设备发送的第一指示信息之前，向该终端设备发送第三指示信息，该第三指示信息用 于指示至少两个门限条件，该至少两个门限条件用于该终端设备根据该下行参考信号的测量结果确定当前所处的位置区域。
可选地，该发送单元430具体用于向该终端设备发送广播消息，该广播消息携带该第三指示信息。
可选地，该处理单元420具体用于：若该第一指示信息指示该终端设备当前处于小区边缘区域和小区中心区域之间，将该至少两个上行可选波形中的DFT-s-OFDM确定为该第一目标波形。
可选地，若该第一指示信息指示该终端设备当前处于小区边缘区域和小区中心区域之间，该第二指示信息还用于指示该终端设备向该网络设备发送上行参考信号。
此时，可选地，该接收单元410还用于接收该终端设备采用该第一目标波形发送的上行参考信号；
相应地，该处理单元420还用于根据该接收单元410接收到的上行参考信号，从该至少两个上行可选波形中确定第二目标波形。
具体地，该处理单元420可以对接收到的上行参考信号进行测量，并根据测量结果，从该至少两个上行可选波形中确定第二目标波形。
作为一个可选例子，该测量结果可以包括路径损耗。此时，可选地，该处理单元420具体用于：
如果该路径损耗低于预设门限值，将该至少两个上行可选波形中的OFDM确定为该第二目标波形；
否则，将该至少两个上行可选波形中的DFT-s-OFDM确定为该第二目标波形。
可选地，该发送单元430还用于向该终端设备发送第四指示信息，该第四指示信息用于指示该终端设备采用该第二目标波形进行上行传输。
可选地，该第一指示信息占用至少两个比特。
可选地，该至少两个上行可选波形包括：OFDM和DFT-s-OFDM。
应理解，这里的网络设备400以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(Application Specific Integrated Circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，网络设备 400可以具体为上述方法实施例中的网络设备，网络设备400可以用于执行上述方法实施例中与网络设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
图5示意性地示出了本发明实施例提供的终端设备500。该终端设备500包括：
发送器510，用于向网络设备发送第一指示信息，该第一指示信息用于指示该终端设备500当前所处的位置区域；
接收器520，用于接收该网络设备发送的第二指示信息，该第二指示信息用于指示该网络设备根据发送器510发送的第一指示信息从至少两个上行可选波形中确定的第一目标波形。
该发送器510还用于采用该接收器520接收到的该第二指示信息指示的该第一目标波形进行上行传输。
可选地，该终端设备500当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
可选地，该发送器510具体用于向网络设备发送随机接入请求，该随机接入请求携带该第一指示信息。
此时，可选地，该接收器520具体用于接收网络设备发送的随机接入响应，该随机接入响应携带该第二指示信息。
可选地，该随机接入请求还携带前导码，其中，该第一指示信息所占用的比特紧随该前导码之后。
可选地，该终端设备500还包括：处理器，用于在该发送器510向网络设备发送第一指示信息之前，根据位置区域与前导码之间的对应关系，从至少两个前导码中确定与该终端设备500当前所处的位置区域对应的前导码。
此时，该随机接入请求携带该第一指示信息，可以包括：该随机接入请求携带该处理器确定的前导码。
可选地，该发送器510具体用于向网络设备发送调度请求，该调度请求携带该第一指示信息。
此时，可选地，该接收器520具体用于接收网络设备发送的上行授权，该上行授权携带该第二指示信息。
可选地，该终端设备500还包括：处理器，用于在该发送器510向网络设备发送第一指示信息之前，对该网络设备发送的下行参考信号进行测量， 以及根据测量结果，确定该终端设备500当前所处的位置区域。
可选地，该处理器具体用于通过将测量结果与至少两个门限条件进行比较，确定该终端设备500当前所处的位置区域。
可选地，该接收器520还用于：在根据测量结果，确定该终端设备500当前所处的位置区域之前，接收该网络设备发送的第三指示信息，该第三指示信息用于指示该至少两个门限条件。
可选地，该终接收器520具体用于接收该网络设备发送的广播消息，该广播消息携带该第三指示信息。
可选地，若该第一指示信息指示该终端设备500当前处于小区边缘区域和小区中心区域之间，该第二指示信息还用于指示该终端设备500向该网络设备发送上行参考信号；
相应地，该发送器510具体用于根据该第二指示信息，采用该第一目标波形向该网络设备发送上行参考信号。
可选地，该接收器520还用于：接收该网络设备发送的第四指示信息，该第四指示信息用于指示该网络设备根据该上行参考信号从该至少两个上行可选波形中确定的第二目标波形；
相应地，该发送器510还用于采用该接收器520接收到的第四指示信息指示的该第二目标波形，进行上行传输。
可选地，该第一指示信息占用至少两个比特。
可选地，该至少两个上行可选波形包括：OFDM和DFT-s-OFDM。
应理解，这里的终端设备500可以具体为上述实施例中的终端设备，并且可以用于执行上述方法实施例中与终端设备对应的各个步骤和/或流程。
可选地，终端设备500还可以包括存储器，该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。该处理器可以用于执行存储器中存储的指令，并且该处理器执行该指令时，该处理器可以执行上述方法实施例中与终端设备对应的各个步骤。
图6示意性地示出了本发明实施例提供的网络设备600。该网络设备600包括：
接收器610，用于接收终端设备发送的第一指示信息，该第一指示信息用于指示该终端设备当前所处的位置区域；
处理器620，用于根据该接收器610接收到的该第一指示信息指示的位置区域，从至少两个上行可选波形中确定第一目标波形；
发送器630，用于向该终端设备发送第二指示信息，该第二指示信息用于指示该终端设备采用该处理器620确定的第一目标波形进行上行传输。
可选地，该终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
可选地，该接收器610具体用于接收终端设备发送的随机接入请求，该随机接入请求携带该第一指示信息。
此时，可选地，该发送器630可以具体用于向终端设备发送随机接入响应，该随机接入响应携带该第二指示信息。
可选地，该随机接入请求还携带前导码，其中，该第一指示信息所占用的比特紧随该前导码之后。
可选地，该随机接入请求携带该第一指示信息，包括：该随机接入请求携带与该终端设备当前所处的位置区域所对应的前导码。
可选地，该接收器610具体用于接收终端设备发送的调度请求，该调度请求携带该第一指示信息。
此时，可选地，该发送器630可以具体用于向终端设备发送上行授权，该上行授权携带该第二指示信息。
可选地，该发送器630还用于：在该接收器610接收终端设备发送的第一指示信息之前，向该终端设备发送下行参考信号，该下行参考信号用于该终端设备确定当前所处的位置区域。
可选地，该发送器630还用于：在该接收器610接收终端设备发送的第一指示信息之前，向该终端设备发送第三指示信息，该第三指示信息用于指示至少两个门限条件，该至少两个门限条件用于该终端设备根据该下行参考信号的测量结果确定当前所处的位置区域。
可选地，该发送器630具体用于向该终端设备发送广播消息，该广播消息携带该第三指示信息。
可选地，该处理器620具体用于：若该第一指示信息指示该终端设备当前处于小区边缘区域和小区中心区域之间，将该至少两个上行可选波形中的DFT-s-OFDM确定为该第一目标波形。
可选地，若该第一指示信息指示该终端设备当前处于小区边缘区域和小 区中心区域之间，该第二指示信息还用于指示该终端设备向该网络设备发送上行参考信号。
此时，可选地，该接收器610还用于接收该终端设备采用该第一目标波形发送的上行参考信号；
相应地，该处理器620还用于根据该接收器610接收到的上行参考信号，从该至少两个上行可选波形中确定第二目标波形。
具体地，该处理器620可以对接收到的上行参考信号进行测量，并根据测量结果，从该至少两个上行可选波形中确定第二目标波形。
作为一个可选例子，该测量结果可以包括路径损耗。此时，可选地，该处理器620具体用于：如果该路径损耗低于预设门限值，将该至少两个上行可选波形中的OFDM确定为该第二目标波形；否则，将该至少两个上行可选波形中的DFT-s-OFDM确定为该第二目标波形。
可选地，该发送器630还用于向该终端设备发送第四指示信息，该第四指示信息用于指示该终端设备采用该第二目标波形进行上行传输。
可选地，该第一指示信息占用至少两个比特。
可选地，该至少两个上行可选波形包括：OFDM和DFT-s-OFDM。
应理解，这里的网络设备600可以具体为上述实施例中的网络设备，并且可以用于执行上述方法实施例中与网络设备对应的各个步骤和/或流程。
可选地，网络设备600还可以包括存储器，该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。该处理器可以用于执行存储器中存储的指令，并且该处理器执行该指令时，该处理器可以执行上述方法实施例中与终端设备对应的各个步骤。
本领域普通技术人员可以意识到，结合本文中所公开的实施例中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域普通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。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述 描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本文揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (56)

  1. 一种通信方法，其特征在于，包括：
    终端设备向网络设备发送第一指示信息，所述第一指示信息用于指示所述终端设备当前所处的位置区域；
    所述终端设备接收所述网络设备发送的第二指示信息，所述第二指示信息用于指示所述网络设备根据所述终端设备当前所处的位置区域从至少两个上行可选波形中确定的第一目标波形；
    所述终端设备采用所述第一目标波形进行上行传输。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备向网络设备发送第一指示信息，包括：
    所述终端设备向网络设备发送随机接入请求，所述随机接入请求携带所述第一指示信息。
  4. 根据权利要求3所述的方法，其特征在于，所述随机接入请求还携带前导码，其中，所述第一指示信息所占用的比特紧随所述前导码之后。
  5. 根据权利要求3所述的方法，其特征在于，在所述终端设备向网络设备发送第一指示信息之前，所述方法还包括：
    所述终端设备根据位置区域与前导码之间的对应关系，从至少两个前导码中确定与所述终端设备当前所处的位置区域对应的前导码；
    所述随机接入请求携带所述第一指示信息，包括：所述随机接入请求携带与所述终端设备当前所处的位置区域所对应的前导码。
  6. 根据权利要求1或2所述的方法，其特征在于，所述终端设备向网络设备发送第一指示信息，包括：
    所述终端设备向网络设备发送调度请求，所述调度请求携带所述第一指示信息。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，在所述终端设备向网络设备发送第一指示信息之前，所述方法还包括：
    所述终端设备对所述网络设备发送的下行参考信号进行测量；
    所述终端设备根据所述测量的结果，确定所述终端设备当前所处的位置 区域。
  8. 根据权利要求7所述的方法，其特征在于，所述终端设备根据所述测量的结果，确定所述终端设备当前所处的位置区域，包括：
    所述终端设备通过将所述测量的结果与至少两个门限条件进行比较，确定所述终端设备当前所处的位置区域。
  9. 根据权利要求8所述的方法，其特征在于，在所述终端设备根据所述测量的结果，确定所述终端设备当前所处的位置区域之前，所述方法还包括：
    所述终端设备接收所述网络设备发送的第三指示信息，所述第三指示信息用于指示所述至少两个门限条件。
  10. 根据权利要求9所述的方法，其特征在于，所述终端设备接收所述网络设备发送的第三指示信息，包括：
    所述终端设备接收所述网络设备发送的广播消息，所述广播消息携带所述第三指示信息。
  11. 根据权利要求1至10中任一项所述的方法，其特征在于，若所述第一指示信息指示所述终端设备当前处于小区边缘区域和小区中心区域之间，所述第二指示信息还用于指示所述终端设备向所述网络设备发送上行参考信号；
    所述终端设备采用所述第一目标波形进行上行传输，包括：
    所述终端设备根据所述第二指示信息，采用所述第一目标波形向所述网络设备发送上行参考信号。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述网络设备发送的第四指示信息，所述第四指示信息用于指示所述网络设备根据所述上行参考信号从所述至少两个上行可选波形中确定的第二目标波形；
    所述终端设备采用所述第二目标波形进行上行传输。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述第一指示信息占用至少两个比特。
  14. 根据权利要求1至13中任一项所述的方法，其特征在于，所述至少两个上行可选波形包括：正交频分复用OFDM和离散傅立叶变换扩展正交频分复用DFT-s-OFDM。
  15. 一种通信方法，其特征在于，包括：
    网络设备接收终端设备发送的第一指示信息，所述第一指示信息用于指示所述终端设备当前所处的位置区域；
    所述网络设备根据所述终端设备当前所处的位置区域，从至少两个上行可选波形中确定第一目标波形；
    所述网络设备向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述终端设备采用所述第一目标波形进行上行传输。
  16. 根据权利要求15所述的方法，其特征在于，所述终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
  17. 根据权利要求15或16所述的方法，其特征在于，所述网络设备接收终端设备发送的第一指示信息，包括：
    所述网络设备接收终端设备发送的随机接入请求，所述随机接入请求携带所述第一指示信息。
  18. 根据权利要求17所述的方法，其特征在于，所述随机接入请求还携带前导码，其中，所述第一指示信息所占用的比特紧随所述前导码之后。
  19. 根据权利要求17所述的方法，其特征在于，所述随机接入请求携带所述第一指示信息，包括：所述随机接入请求携带与所述终端设备当前所处的位置区域所对应的前导码。
  20. 根据权利要求15或16所述的方法，其特征在于，所述网络设备接收终端设备发送的第一指示信息，包括：
    所述网络设备接收终端设备发送的调度请求，所述调度请求携带所述第一指示信息。
  21. 根据权利要求15至20中任一项所述的方法，其特征在于，在所述网络设备接收终端设备发送的第一指示信息之前，所述方法还包括：
    所述网络设备向所述终端设备发送下行参考信号，所述下行参考信号用于所述终端设备确定当前所处的位置区域。
  22. 根据权利要求21所述的方法，其特征在于，在所述网络设备接收终端设备发送的第一指示信息之前，所述方法还包括：
    所述网络设备向所述终端设备发送第三指示信息，所述第三指示信息用于指示至少两个门限条件，所述至少两个门限条件用于所述终端设备根据所 述下行参考信号的测量结果确定当前所处的位置区域。
  23. 根据权利要求22所述的方法，其特征在于，所述网络设备向所述终端设备发送第三指示信息，包括：
    所述网络设备向所述终端设备发送广播消息，所述广播消息携带所述第三指示信息。
  24. 根据权利要求15至23中任一项所述的方法，其特征在于，所述网络设备根据所述终端设备当前所处的位置区域，从至少两个上行可选波形中确定第一目标波形，包括：
    若所述第一指示信息指示所述终端设备当前处于小区边缘区域和小区中心区域之间，将所述至少两个上行可选波形中的离散傅立叶变换扩展正交频分复用DFT-s-OFDM确定为所述第一目标波形。
  25. 根据权利要求15至24中任一项所述的方法，其特征在于，若所述第一指示信息指示所述终端设备当前处于小区边缘区域和小区中心区域之间，所述第二指示信息还用于指示所述终端设备向所述网络设备发送上行参考信号；
    所述方法还包括：
    所述网络设备接收所述终端设备采用所述第一目标波形发送的上行参考信号；
    所述网络设备根据所述终端设备发送的上行参考信号，从所述至少两个上行可选波形中确定第二目标波形。
  26. 根据权利要求25所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送第四指示信息，所述第四指示信息用于指示所述终端设备采用所述第二目标波形进行上行传输。
  27. 根据权利要求15至26中任一项所述的方法，其特征在于，所述第一指示信息占用至少两个比特。
  28. 根据权利要求15至27中任一项所述的方法，其特征在于，所述至少两个上行可选波形包括：正交频分复用OFDM和DFT-s-OFDM。
  29. 一种终端设备，其特征在于，包括：
    发送单元，用于向网络设备发送第一指示信息，所述第一指示信息用于指示所述终端设备当前所处的位置区域；
    接收单元，用于接收所述网络设备发送的第二指示信息，所述第二指示 信息用于指示所述网络设备根据所述发送单元发送的第一指示信息从至少两个上行可选波形中确定的第一目标波形；
    该发送单元还用于采用所述接收单元接收到的所述第二指示信息指示的所述第一目标波形进行上行传输。
  30. 根据权利要求29所述的终端设备，其特征在于，所述终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
  31. 根据权利要求29或30所述的终端设备，其特征在于，所述发送单元具体用于向网络设备发送随机接入请求，所述随机接入请求携带所述第一指示信息。
  32. 根据权利要求31所述的终端设备，其特征在于，所述随机接入请求还携带前导码，其中，所述第一指示信息所占用的比特紧随所述前导码之后。
  33. 根据权利要求31所述的终端设备，其特征在于，还包括：
    第一确定单元，用于在所述发送单元向网络设备发送第一指示信息之前，根据位置区域与前导码之间的对应关系，从至少两个前导码中确定与所述终端设备当前所处的位置区域对应的前导码；
    所述随机接入请求携带所述第一指示信息，包括：所述随机接入请求携带所述确定单元确定的前导码。
  34. 根据权利要求29或30所述的终端设备，其特征在于，所述发送单元具体用于向网络设备发送调度请求，所述调度请求携带所述第一指示信息。
  35. 根据权利要求29至34中任一项所述的终端设备，其特征在于，还包括：
    测量单元，用于在所述发送单元向网络设备发送第一指示信息之前，对所述网络设备发送的下行参考信号进行测量；
    第二确定单元，用于根据所述测量单元得到的测量结果，确定所述终端设备当前所处的位置区域。
  36. 根据权利要求35所述的终端设备，其特征在于，所述第二确定单元具体用于通过将所述测量单元得到的测量结果与至少两个门限条件进行比较，确定所述终端设备当前所处的位置区域。
  37. 根据权利要求36所述的终端设备，其特征在于，所述接收单元还用于：在所述第二确定单元根据所述测量单元得到的测量结果，确定所述终端设备当前所处的位置区域之前，接收所述网络设备发送的第三指示信息，所述第三指示信息用于指示所述至少两个门限条件。
  38. 根据权利要求37所述的终端设备，其特征在于，所述终接收单元具体用于接收所述网络设备发送的广播消息，所述广播消息携带所述第三指示信息。
  39. 根据权利要求29至38中任一项所述的终端设备，其特征在于，若所述第一指示信息指示所述终端设备当前处于小区边缘区域和小区中心区域之间，所述第二指示信息还用于指示所述终端设备向所述网络设备发送上行参考信号；
    所述发送单元具体用于根据所述第二指示信息，采用所述第一目标波形向所述网络设备发送上行参考信号。
  40. 根据权利要求39所述的终端设备，其特征在于，所述接收单元还用于：接收所述网络设备发送的第四指示信息，所述第四指示信息用于指示所述网络设备根据所述上行参考信号从所述至少两个上行可选波形中确定的第二目标波形；
    所述发送单元还用于采用所述接收单元接收到的第四指示信息指示的所述第二目标波形，进行上行传输。
  41. 根据权利要求29至40中任一项所述的终端设备，其特征在于，所述第一指示信息占用至少两个比特。
  42. 根据权利要求29至41中任一项所述的终端设备，其特征在于，所述至少两个上行可选波形包括：正交频分复用OFDM和离散傅立叶变换扩展正交频分复用DFT-s-OFDM。
  43. 一种网络设备，其特征在于，包括：
    接收单元，用于接收终端设备发送的第一指示信息，所述第一指示信息用于指示所述终端设备当前所处的位置区域；
    处理单元，用于根据所述接收单元接收到的所述第一指示信息指示的位置区域，从至少两个上行可选波形中确定第一目标波形；
    发送单元，用于向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述终端设备采用所述处理单元确定的第一目标波形进行上行传 输。
  44. 根据权利要求43所述的网络设备，其特征在于，所述终端设备当前所处的位置区域包括：小区中心区域、小区边缘区域、或位于小区中心区域和小区边缘区域之间的区域。
  45. 根据权利要求43或44所述的网络设备，其特征在于，所述接收单元具体用于接收终端设备发送的随机接入请求，所述随机接入请求携带所述第一指示信息。
  46. 根据权利要求45所述的网络设备，其特征在于，所述随机接入请求还携带前导码，其中，所述第一指示信息所占用的比特紧随所述前导码之后。
  47. 根据权利要求45所述的网络设备，其特征在于，所述随机接入请求携带所述第一指示信息，包括：所述随机接入请求携带与所述终端设备当前所处的位置区域所对应的前导码。
  48. 根据权利要求43或44所述的网络设备，其特征在于，所述接收单元具体用于接收终端设备发送的调度请求，所述调度请求携带所述第一指示信息。
  49. 根据权利要求43至48中任一项所述的网络设备，其特征在于，所述发送单元还用于：在所述接收单元接收终端设备发送的第一指示信息之前，向所述终端设备发送下行参考信号，所述下行参考信号用于所述终端设备确定当前所处的位置区域。
  50. 根据权利要求49所述的网络设备，其特征在于，所述发送单元还用于：在所述接收单元接收终端设备发送的第一指示信息之前，向所述终端设备发送第三指示信息，所述第三指示信息用于指示至少两个门限条件，所述至少两个门限条件用于所述终端设备根据所述下行参考信号的测量结果确定当前所处的位置区域。
  51. 根据权利要求50所述的网络设备，其特征在于，所述发送单元具体用于向所述终端设备发送广播消息，所述广播消息携带所述第三指示信息。
  52. 根据权利要求43至51中任一项所述的网络设备，其特征在于，所述处理单元具体用于：若所述第一指示信息指示所述终端设备当前处于小区边缘区域和小区中心区域之间，将所述至少两个上行可选波形中的离散傅立 叶变换扩展正交频分复用DFT-s-OFDM确定为所述第一目标波形。
  53. 根据权利要求43至52中任一项所述的网络设备，其特征在于，若所述第一指示信息指示所述终端设备当前处于小区边缘区域和小区中心区域之间，所述第二指示信息还用于指示所述终端设备向所述网络设备发送上行参考信号；
    所述接收单元还用于接收所述终端设备采用所述第一目标波形发送的上行参考信号；
    所述处理单元还用于根据所述接收单元接收到的上行参考信号，从所述至少两个上行可选波形中确定第二目标波形。
  54. 根据权利要求53所述的网络设备，其特征在于，所述发送单元还用于向所述终端设备发送第四指示信息，所述第四指示信息用于指示所述终端设备采用所述第二目标波形进行上行传输。
  55. 根据权利要求43至54中任一项所述的网络设备，其特征在于，所述第一指示信息占用至少两个比特。
  56. 根据权利要求43至55中任一项所述的网络设备，其特征在于，所述至少两个上行可选波形包括：正交频分复用OFDM和DFT-s-OFDM。
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