WO2020061893A1 - 测量信道质量的方法和装置 - Google Patents

测量信道质量的方法和装置 Download PDF

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Publication number
WO2020061893A1
WO2020061893A1 PCT/CN2018/107926 CN2018107926W WO2020061893A1 WO 2020061893 A1 WO2020061893 A1 WO 2020061893A1 CN 2018107926 W CN2018107926 W CN 2018107926W WO 2020061893 A1 WO2020061893 A1 WO 2020061893A1
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WIPO (PCT)
Prior art keywords
downlink carrier
information
terminal device
channel quality
downlink
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PCT/CN2018/107926
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English (en)
French (fr)
Inventor
罗之虎
李军
金哲
Original Assignee
华为技术有限公司
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201880097979.5A priority Critical patent/CN112753259B/zh
Priority to PCT/CN2018/107926 priority patent/WO2020061893A1/zh
Publication of WO2020061893A1 publication Critical patent/WO2020061893A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communications, and more particularly, to a method and apparatus for measuring channel quality.
  • Machine type communication also known as machine-to-machine (M2M), or Internet of Things (IoT)
  • MTC Machine type communication
  • M2M machine-to-machine
  • IoT Internet of Things
  • the future of the Internet of Things communication may mainly include smart meter reading, medical detection monitoring, logistics detection, industrial detection monitoring, automotive networking, smart communities, and wearable device communication.
  • the Internet of Things industry structured around MTC communications is considered to be the fourth wave after computers, the Internet, and mobile communication networks, and is the direction of future network development. It is expected that by 2022, the number of MTC equipment connections will reach 50 billion.
  • NPDCCH narrowband physical downlink control channels
  • NPDSCH narrowband physical downlink shared channels
  • the present application provides a method for measuring channel quality, so that terminal equipment can save power consumption and reduce system resource consumption.
  • a method for measuring channel quality includes: a terminal device receiving configuration information sent by a network device, the configuration information used to configure a downlink carrier set; and the terminal device receiving first information sent by the network device
  • the first information is used to schedule a second random access procedure message Msg2, the first information includes a first parameter, and the first parameter includes a number of repetitions of a downlink channel carrying the first information; the terminal device sends the network device Second information and third information, the second information includes information used to indicate a channel quality of a first downlink carrier, and the third information is used to indicate that a channel quality of the first downlink carrier is related to the first parameter, Or, the third information is used to indicate that the channel quality of the first downlink carrier is related to a second parameter, and the second parameter includes a maximum number of repetitions of a common search space for random access on the second downlink carrier, and the downlink The carrier set includes the second downlink carrier.
  • the configuration information is carried in a system message, and the system message may be SIB22-NB or other system messages.
  • the first downlink carrier includes one or more downlink carriers in the downlink carrier set.
  • the maximum number of repetitions of the common search space for random access refers to the maximum common search space of the NPDCCH for scheduling random access response (random access response (RAR), Msg3 retransmission, or Msg4).
  • RAR random access response
  • Msg3 retransmission Msg4
  • a terminal device reports channel quality of one or more downlink carriers, and a network device can optimize resource allocation on this carrier based on the channel quality of the downlink carrier, which helps improve downlink resource efficiency. This helps terminal equipment save power consumption and reduce system resource consumption.
  • the channel quality reported by the terminal device is related to the first parameter or the second parameter.
  • the method for reporting the channel quality by the terminal device is more flexible, can be compatible with terminal devices of different capabilities, and helps to save the overhead of the terminal device reporting channel quality.
  • the first downlink carrier includes a downlink carrier carrying the Msg2.
  • the terminal device helps the network device to optimize the resource allocation of the downlink channel for Msg3 retransmission and the downlink channel for Msg4 by carrying the channel quality information of the downlink carrier carrying Msg2 in Msg3, thereby helping Improve downlink resource efficiency.
  • the second downlink carrier is a downlink carrier carrying the Msg2.
  • the first downlink carrier includes a third downlink carrier, where the third downlink carrier is a downlink with the best channel quality among one or more carriers.
  • Carrier the one or more carriers are determined by the terminal device from the downlink carrier set.
  • the terminal device reports the carrier position of the one or more downlink carriers with the best channel quality in the downlink measurement carrier set and the downlink channel quality corresponding to the carrier in Msg3. Based on this result, the network device can allocate the downlink carrier with the best channel quality to the terminal device in Msg4 to achieve frequency selective scheduling. At the same time, based on the downlink channel quality of this carrier, the resource allocation of NPDCCH and NPDSCH on this carrier can be optimized, thereby improving Downstream resource efficiency.
  • the first downlink carrier includes a third downlink carrier, where the third downlink carrier is determined by the terminal device according to a preset rule; or The third downlink carrier is indicated by the network device.
  • the terminal device reports the channel quality of the downlink carrier determined by the terminal device according to a preset rule or indicated by the network device, and the network device determines the load condition of each carrier according to the channel quality reported by all terminal devices, for example, according to Statistics show that carriers with better downlink channel quality have a lighter load, and carriers with poor downlink channel quality have a heavier load, which helps network equipment to achieve load balancing. For example, some services of a carrier with a heavy load are allocated to a carrier with a lighter load. Carrier.
  • the terminal device carries the channel quality information of one or more downlink carriers in the downlink carrier set in Msg3, and the network device can optimize resource allocation on this carrier based on the channel quality of the downlink carrier, thereby helping To improve the efficiency of downlink resources.
  • the second downlink carrier is the third carrier, or the second downlink carrier is a downlink carrier carrying the Msg2.
  • the second downlink carrier is the third carrier
  • the second parameter includes a common search space for random access on the second downlink carrier. The maximum or minimum number of maximum repetitions.
  • the terminal device sends the second information and the third information to the network device, including: the terminal device is sending a random access process message to the network device Before the third Msg3, the third information is sent to the network device; the terminal device sends the Msg3 to the network device, and the Msg3 includes the second information.
  • the terminal device sends the second information and the third information to the network device, including: the terminal device sends a random access process message three Msg3 to the network device, and the Msg3 includes the second information And that third information.
  • the terminal device informs the network device of the measured channel quality and the first parameter or the second parameter before sending Msg3.
  • the terminal device can only carry the channel quality information in Msg3, which helps to save Msg3 signaling overhead.
  • a method for measuring channel quality includes: a network device sending configuration information to a terminal device, the configuration information used to configure a downlink carrier set; the network device sending first information to the terminal device, the The first information is used to schedule the second random access procedure message Msg2, the first information includes a first parameter, and the first parameter includes a repetition number of a downlink channel carrying the first information; the network device receives the terminal device and sends a second Information and third information, the second information includes information used to indicate a channel quality of the first downlink carrier, and the third information is used to indicate that the channel quality of the first downlink carrier is related to the first parameter, or The third information is used to indicate that the channel quality of the first downlink carrier is related to a second parameter, and the second parameter includes a maximum number of repetitions of a common search space for random access on the second downlink carrier, and the downlink carrier set Including the second downlink carrier.
  • the first downlink carrier includes a downlink carrier carrying the Msg2.
  • the second downlink carrier is a downlink carrier carrying the Msg2.
  • the first downlink carrier includes a third downlink carrier, where the third downlink carrier is a downlink with the best channel quality among one or more carriers.
  • Carrier the one or more carriers are determined by the terminal device from the downlink carrier set; or the third downlink carrier is determined by the terminal device according to a preset rule; or the third downlink carrier is indicated by the network device.
  • the second downlink carrier is the third carrier, or the second downlink carrier is a downlink carrier carrying the Msg2.
  • the second downlink carrier is the third carrier
  • the second parameter includes a common search space for random access on the second downlink carrier. The maximum or minimum number of maximum repetitions.
  • an apparatus for measuring channel quality for performing the foregoing first aspect and the method in any possible implementation manner of the first aspect.
  • the apparatus for measuring channel quality may include a unit for executing the method in the first aspect and any possible implementation manner of the first aspect.
  • an apparatus for measuring channel quality for performing the foregoing second aspect and the method in any possible implementation manner of the second aspect.
  • the apparatus for measuring channel quality may include a unit for performing the second aspect and the method in any possible implementation manner of the second aspect.
  • a device for measuring channel quality may be a terminal device designed in the foregoing method, or a chip provided in the terminal device.
  • the apparatus includes: a processor, coupled to the memory, and configured to execute instructions in the memory to implement the foregoing first aspect and the method performed by the terminal device in any possible implementation manner of the first aspect.
  • the device further includes a memory.
  • the apparatus further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input / output interface.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • an apparatus for measuring channel quality may be a network device designed in the foregoing method or a chip provided in the network device.
  • the apparatus includes: a processor, which is coupled to the memory and can be used to execute instructions in the memory to implement the second aspect described above and the method performed by the network device in any possible implementation manner of the second aspect.
  • the device further includes a memory.
  • the apparatus further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input / output interface.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a program for executing the methods provided by the first aspect to the second aspect when executed by a processor.
  • a program product includes program code.
  • the program code is run by a communication unit, a processing unit or transceiver, or a processor of a device (for example, a terminal device or a network device), , So that the apparatus executes any one of the above-mentioned first aspect to the second aspect and its possible implementation methods.
  • a computer-readable medium stores a program, and the program causes a device (for example, a terminal device or a network device) to execute the first to second aspects and the possible aspects thereof. Any one of the embodiments.
  • FIG. 1 is a schematic diagram of an application scenario of a technical solution provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a network architecture according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another network architecture according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a terminal device and a network device providing random access in four steps according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of monitoring a common search space of Type 2 during a random access process according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method for measuring channel quality according to an embodiment of the present application.
  • FIG. 7 is another schematic flowchart of a method for measuring channel quality according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of an apparatus for measuring channel quality according to an embodiment of the present application.
  • FIG. 9 is another schematic block diagram of an apparatus for measuring channel quality according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Global Interoperability for Microwave Access
  • the terminal device in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or User device.
  • Terminal equipment can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and wireless communications Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or public land mobile network (PLMN) in future evolution Terminal equipment and the like are not limited in this embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDAs personal digital assistants
  • PLMN public land mobile network
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a Global System for Mobile Communication (GSM) system or a Code Division Multiple Access (CDMA) system.
  • the base station (Base Transceiver Station (BTS)) can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evoled) in an LTE system.
  • GSM Global System for Mobile Communication
  • CDMA Code Division Multiple Access
  • the base station can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evoled) in an LTE system.
  • NodeB, NB base station
  • WCDMA wideband code division multiple access
  • evoled evolved base station
  • NodeB can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, access point, in-vehicle device, wearable device, and future
  • CRAN cloud radio access network
  • the network equipment in the 5G network or the network equipment in the future evolved PLMN network is not limited in the embodiments of the present application.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • This hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system.
  • This application layer contains applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the application can be run to provide the program according to the embodiment of the application.
  • the communication may be performed by using the method described above.
  • the method execution subject provided in the embodiments of the present application may be a terminal device or a network device, or a function module in the terminal device or the network device that can call a program and execute the program.
  • various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and / or engineering techniques.
  • article of manufacture encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and / or other machine-readable media used to store information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction (s) and / or data.
  • FIG. 1 is a schematic diagram of an application scenario of a technical solution provided by an embodiment of the present application.
  • the network device 110 and the terminal devices 120 to 170 form a communication system.
  • the network device 110 can send The downlink information is sent to the terminal device 120 to the terminal device 170, and the terminal device 120 to the terminal device 170 may also send the uplink information to the network device 110.
  • the terminal devices 150 to 170 can also form a communication system.
  • the terminal device 160 can send information to the terminal device 150 and the terminal device 170, and the terminal device 150 and the terminal device 170 can also send information to the terminal. Equipment 160.
  • the method for measuring channel quality may be applicable to a wireless communication system.
  • two communication devices in the wireless communication system have a wireless communication connection, and the two One of the communication devices may correspond to the terminal device shown in FIG. 1, for example, it may be the terminal device 160 in FIG. 1 or a chip configured in the terminal device 160; in the two communication devices, The other communication device may correspond to the network device shown in FIG. 1.
  • the communication device may be the network device 110 in FIG. 1, or may be a chip configured in the network device 110.
  • FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • the network architecture includes a core network (CN) device and a radio access network (RAN) device.
  • the RAN device includes a baseband device and a radio frequency device.
  • the baseband device can be implemented by one node or multiple nodes.
  • the radio frequency device can be implemented independently from the baseband device remotely, can also be integrated into the baseband device, or part of the remote part Integrated in the baseband device.
  • a RAN device eNB
  • eNB includes a baseband device and a radio frequency device, where the radio frequency device can be remotely arranged relative to the baseband device, such as a remote radio unit (RRU) remotely arranged relative to the BBU.
  • RRU remote radio unit
  • the control plane protocol layer structure may include a radio resource control (RRC) layer, a packet data convergence layer protocol (PDCP) layer, a radio link control (RLC) layer, and a media interface. Functions of the protocol layer such as the media access control (MAC) layer and the physical layer.
  • RRC radio resource control
  • PDCP packet data convergence layer protocol
  • RLC radio link control
  • Functions of the protocol layer such as the media access control (MAC) layer and the physical layer.
  • the user plane protocol layer structure can include the functions of the protocol layers such as the PDCP layer, the RLC layer, the MAC layer, and the physical layer; in one implementation, the PDCP layer can also include a service data adaptation (SDAP) layer .
  • SDAP service data adaptation
  • a RAN device may include a centralized unit (CU) and a distributed unit (DU). Multiple DUs can be centrally controlled by one CU.
  • CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the PDCP layer and above are set in the CU, and the functions of the protocol layers below PDCP, such as the RLC layer and the MAC layer are set in the DU.
  • a RAN device can implement the functions of protocol layers such as RRC, PDCP, RLC, and MAC by one node; or multiple nodes can implement the functions of these protocol layers; for example, in an evolved structure, RAN devices can include CU and DU Multiple DUs can be centrally controlled by a CU. As shown in Figure 2, CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the PDCP layer and above are set in the CU, and the functions of the protocol layers below PDCP, such as the RLC layer and the MAC layer are set in the DU.
  • This division of the protocol layer is only an example. It can also be divided at other protocol layers, for example, at the RLC layer.
  • the functions of the RLC layer and above are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU.
  • it is divided in a certain protocol layer, for example, setting some functions of the RLC layer and functions of the protocol layer above the RLC layer in the CU, and setting the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer in the DU.
  • it can also be divided in other ways, for example, by delay, and the functions that need to meet the delay requirements in processing time are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU.
  • the radio frequency device can be remote, not placed in the DU, or integrated in the DU, or part of the remote can be integrated in the DU, without any restrictions here.
  • FIG. 3 shows a schematic diagram of another network architecture provided by an embodiment of the present application.
  • the control plane (CP) and user plane (UP) of the CU can also be changed. It is separated and implemented by different entities, which are a control plane CU entity (CU-CP entity) and a user plane CU entity (CU-UP entity).
  • CU-CP entity control plane CU entity
  • CU-UP entity user plane CU entity
  • the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU.
  • the DU can directly transmit to the terminal device or the CU through protocol layer encapsulation without parsing the signaling. If the following embodiments involve transmission of such signaling between a DU and a terminal device, at this time, the sending or receiving of signaling by the DU includes such a scenario.
  • the signaling at the RRC or PDCP layer will eventually be processed as the PHY layer signaling and sent to the terminal device, or it will be transformed from the received PHY layer signaling.
  • the RRC or PDCP layer signaling can also be considered to be sent by the DU, or sent by the DU and the radio frequency.
  • the CU is divided into network equipment on the RAN side.
  • the CU may also be divided into network equipment on the CN side, which is not limited herein.
  • the devices in the following embodiments of the present application may be located at the terminal according to the functions they implement.
  • the network device may be a CU node, or a DU node, or a RAN device including a CU node and a DU node.
  • NRSRP narrow band reference signal receiving power
  • NPRACH narrowband physical random access channel
  • Narrowband Internet of Things (NB-IoT) systems need to support a large coverage area.
  • the scheduling strategies of network devices will be completely different.
  • the terminal device at the center of the cell has better wireless channel conditions, and network equipment can use less power to establish reliable communication links, and can use large transmission code blocks, high-order modulation, carrier bonding, and other technical means.
  • Quickly complete data transmission for terminal equipment located at the edge of the cell or in the basement, the quality of the wireless channel is poor, network equipment may need to use larger power to maintain the link, and small code blocks and low Order modulation, multiple repeated transmissions, and spread spectrum techniques can complete data transmission.
  • the NB-IoT system introduces the concept of coverage level.
  • the channel transmission conditions of terminal devices at the same coverage level are similar.
  • Network devices can use similar scheduling parameters for such users, and they occupy similar control signaling overhead.
  • the NB-IoT system can be divided into 3 coverage levels.
  • the coverage level of terminal equipment that is closer to the network equipment is “general coverage” and the number of repetitions is not repeated.
  • the coverage level of terminal equipment that is far from the network equipment is "edge coverage.” ", The number of repetitions is medium; the coverage level of terminal equipment in scenarios such as basements is" extended coverage ", and the number of repetitions may be hundreds or even thousands of times.
  • the terminal equipment selects the appropriate number of transmissions according to the coverage level, which can reduce unnecessary repetition and reduce power overhead.
  • FIG. 4 shows a schematic flowchart of a terminal device and a network device performing random access in four steps according to an embodiment of the present application. It should be understood that FIG. 4 uses contention based RA (CBRA) in NR as an example. The process includes:
  • S210 The terminal device sends a random access process message 1 (Msg1) to the network device.
  • Msg1 random access process message 1
  • the random access procedure message 1 may also be referred to as a random access request message or a random access preamble.
  • the main role of preamble is to tell the network device that there is a random access request, and enable the network device to estimate the transmission delay between the remaining terminal devices, so that the network device can calibrate the uplink timing and pass the calibration information through the random access process in S220.
  • Message two (Msg2) informs the terminal device.
  • the terminal device may select a preamble and transmit it on a physical random access channel (PRACH).
  • PRACH physical random access channel
  • the network device informs the terminal device of the time-frequency resource set of the PRACH that the current cell can use to transmit the preamble through the system message.
  • the terminal device initiates random access, it also needs to select the PRACH resource to send the preamble.
  • the method 200 further includes:
  • the network device sends a system message to the terminal device, where the system message includes configuration information of an uplink carrier and a downlink carrier.
  • the non-anchor narrowband internet of things carrier (non-anchor NB-IoT carrier) introduced in typical Rel-14 is used for RACH as an example.
  • Network equipment can be used in narrowband system message block 2 (SIB2 -NB) broadcasts narrowband physical random access channel (narrowband physical random access channel (NPRACH)) resource information on the anchor carrier, and downlink (DL) narrowband corresponding to the uplink (UL) anchor carrier.
  • SIB2 -NB narrowband system message block 2
  • NPRACH narrowband physical random access channel
  • DL downlink
  • the Internet of Things carrier is the downlink anchor carrier (DL anchor carrier, DL anchor carrier).
  • the anchor carrier refers to the terminal device assuming a narrowband primary synchronization signal (narrowband primary synchronization signal (NPSS) / narrowband secondary synchronization signal synchronization (NSSS) / narrowband physical broadcast channel (NPBCH) / narrowband system information block (system information block-NB (SIB-NB)) carrier, for time division duplex (TDD),
  • NPSS narrowband primary synchronization signal
  • NSSS narrowband secondary synchronization signal synchronization
  • NPBCH narrowband physical broadcast channel
  • SIB-NB system information block-NB
  • Anchor carrier refers to the carrier on which the terminal device assumes NPSS / NSSS / NPBCH transmission.
  • the non-anchor carrier refers to the carrier that the terminal device assumes no NPSS / NSSS / NPBCH / SIB-NB transmission
  • the non-anchor carrier refers to the carrier that the terminal device assumes no NPSS / Carrier for NSSS / NPBCH transmission.
  • Network equipment can broadcast a series of non-anchor carrier configuration information in the narrowband system message block 22 (SIB22-NB), including a series of DL non-anchor carrier and UL non-anchor carrier configuration information.
  • SIB22-NB narrowband system message block 22
  • each UL non-anchor carrier will be configured with NPRACH resources according to the coverage level
  • each NPRACH resource may be configured with the parameter npdcch-carrierIndex-r14.
  • This parameter is used to indicate the Msg2 corresponding to Msg1 of the NPRACH resource and the scheduling
  • npdcch-NumRepetitions-RA-r14 For each NPRACH resource, a parameter npdcch-NumRepetitions-RA-r14 may be configured. This parameter is used to indicate the maximum repetition number Rmax of the common search space of the NPDCCH for scheduling RAR, Msg3 retransmission, and Msg4.
  • the terminal device determines a downlink carrier set.
  • a downlink carrier list is configured.
  • Each entry in the list includes carrier configuration information.
  • the configuration information includes the center frequency position of the carrier, the deployment mode, the reference signal power configuration, and the effective subcarriers. Frame configuration, downlink interval configuration, etc.
  • the downlink carriers can be numbered. For example, the index of the first entry in the list is '1', the index of the second entry is '2', and so on. The downlink carrier can be subsequently addressed according to this index.
  • the measurement carrier set may be a downlink carrier configured by a system message for random access (RACH) or paging.
  • RACH system message for random access
  • 15 downlink carriers for random access or paging are configured in the system message, and these 15 downlink carriers can be used as a downlink carrier set.
  • the downlink carrier set is the downlink carrier associated with the RACH configured in the system message, that is, the NPDCCH specified in the RACH resource configuration for Msg2, and the NPDCCH scheduling Msg3 retransmission, and the NPDCCH scheduling Msg4 and Msg4 downlink carriers, where Msg2 and Msg4 can be carried by NPDSCH. If 15 downlink carriers for random access or paging are configured in the system message, and only 5 downlink carriers are associated with the RACH, these 5 downlink carriers can be used as a downlink carrier set.
  • the method 200 further includes:
  • the terminal device determines a first uplink carrier
  • the terminal device sends the Msg1 to the network device on the first uplink carrier.
  • the terminal device may select a certain uplink carrier to send Msg1 according to the configuration in SIB2-NB and SIB22-NB according to a preset probability.
  • the terminal device determines a first random access channel resource on the first uplink carrier according to the coverage level
  • the terminal device sends Msg1 to the network device on the first random access channel resource.
  • the terminal device also needs to select a PRACH resource to send Msg1 on the first uplink carrier.
  • the terminal device can determine which PRACH resource of the first uplink carrier to send Msg1 through the coverage level, and send it through SIB2 or SIB22.
  • the configuration information determines the downlink carrier corresponding to the selected uplink PRACH resource, so that the terminal device learns the NPDCCH and Msg2 scheduling Msg2, the NPDCCH scheduling Msg3 retransmission, and the NPDCCH and Msg4 scheduling Msg4 in the RACH process.
  • Send on the carrier, where Msg2 and Msg4 can be carried by NPDSCH.
  • the terminal device measures the NRSRP of the carrier measured on the terminal device according to the narrowband reference signal (NRS) sent on the downlink NB-IoT carrier (the NRSRP directly reflects the wireless signal between the network device and the terminal device) Transmission loss).
  • NRS narrowband reference signal
  • the terminal device compares the measured NRSRP with several NRSRP thresholds (NRSRP thresholds are issued through system messages), and determines the coverage level according to the comparison result.
  • NRSRP thresholds are issued through system messages
  • system messages can send up to two NRSRP thresholds.
  • the following two NRSRP thresholds (NRSRP threshold1, NRSRP threshold2) are used as an example. If the NRSRP measured by the terminal device is ⁇ NRSRP threshold, the terminal device is at the coverage level. 2 (corresponding to extended coverage); otherwise, if the NRSRP value ⁇ NRSRP threshold measured by the terminal device is 1, the terminal device is at the coverage level 1 (corresponding to edge coverage); otherwise, the terminal device is at the coverage level 0 (corresponding to ordinary coverage).
  • the network device will configure different NPRACH resources according to different coverage levels.
  • This NPRACH resource includes the number of repetitions (can take the value of 1, 2, 4, 8, 16, 32, 64, 128), the number of subcarriers, and is used for random access.
  • the terminal device obtains a corresponding coverage level by comparing the measured NRSRP with the NRSRP threshold, and sends Msg1 on the NPRACH resource corresponding to the coverage level. For different coverage levels, the terminal device will use different NPRACH power control methods and repetition times to send Msg1, thereby ensuring the receiving performance of uplink NPRACH reception.
  • the network device sends a random access process message 2 (Msg2) to the terminal device.
  • Msg2 random access process message 2
  • the second random access procedure message may also be referred to as a random access response message.
  • the network device after receiving the preamble sent by the terminal device, the network device sends a corresponding random access response (RA response) to the terminal device, which may include transmitting a random access process message three (Msg3) in S230.
  • Msg3 random access process message three
  • CBRA after receiving the RAR, the terminal device judges whether the preamble identifier in the RAR is the same as the preamble sent in S210. If the preamble identifier is the same, the RAR reception is considered successful; otherwise, the RAR reception is considered failed, and the terminal device may re-trigger the RA process.
  • the method 200 further includes:
  • the network device sends downlink control information DCI to the terminal device, and the DCI is used to schedule the Msg2.
  • the DCI is carried through the NPDCCH.
  • the terminal device needs to monitor an NPDCCH candidate set to obtain scheduling information.
  • the NPDCCH candidate set is called a search space.
  • Type2-CSS appears periodically, and the cycle and its starting position within each cycle are indicated in the system message.
  • the system message carries a parameter Rmax, a starting subframe configuration parameter G, and a starting subframe fraction period offset value ⁇ offset, where G is used to adjust the density of the search space. If the effective duration Rmax of the search space is maintained No change, the larger the G value, the larger the period G * Rmax, and the number of search spaces will decrease in a certain period of time.
  • Type2-CSS The period in which Type2-CSS appears is G * Rmax (ms), the duration in each period is Rmax valid sub-frames, and the starting position is offset backward G * Rmax * from the starting position of each period ⁇ offset (ms).
  • the number of times of Candidate of Type2-CSS can be an integer value in Rmax, Rmax / 2, Rmax / 4 or Rmax / 8.
  • the unit of Rmax is the number of effective subframes.
  • the number of effective subframes is simply a subframe that can be used for NPDCCH and NPDSCH transmission, because there are some subframes used for transmitting common signals in downlink transmission, such as for sending NPSS. , NSSS, NPBCH, SIB1-NB subframes, or subframes used for backward expansion, these subframes cannot be used for NPDCCH / NPDSCH transmission, NPDCCH / NPDSCH transmission will skip these invalid subframes, these subframes Frames also do not participate in the counting of valid subframes.
  • the DCI repetition number R is indicated by the DCI subframe repetition number field, and the DCI subframe repetition number field is located in the DCI. As shown in the following table, the DCI subframe repetition number field can indicate R through 2 bits. If the terminal device successfully receives the DCI, it will obtain R from the DCI subframe repetition number field in the DCI.
  • the terminal device sends a random access process message three (Msg3) to the network device.
  • Msg3 random access process message three
  • the terminal device transmits data through a physical uplink shared channel (PUSCH) on the corresponding uplink transmission resource according to the UL grant information indicated in the RAR.
  • the terminal device may include an RRC message and identification information of the terminal device, such as The C-RNTI information of the terminal device, the resume identification (Resume ID) or the inactive identification (I-RNTI) of the terminal device, where the Resume ID or I-RNTI is assigned to the terminal device by a network device,
  • the terminal device reports the identifier to be used by the network device to identify the identity of the terminal device and related configuration information.
  • the identification information of the terminal device may be a SAE temporary mobile subscriber identity (S-TMSI), or a random value.
  • S-TMSI SAE temporary mobile subscriber identity
  • the transport block size (TBS) of message three in the random access process is 88 bits.
  • TBS transport block size
  • Terminal devices that support updating RRC messages during the random access process can report channel quality through the MAC CE method, that is, they can report channel quality through the MAC CE method of the random access process message 3.
  • the uplink authorization information of the random access process message 3 is indicated by the RAR.
  • the RAR is carried on the random access process message 2.
  • the uplink authorization information includes:
  • -Uplink subcarrier interval ⁇ f used to indicate that the subcarrier interval is 3.75kHz or 15kHz;
  • I sc subcarrier indication field
  • Reporting the channel quality through the MAC of the random access process message three may cause the TBS of the random access process message three to exceed 88 bits, that is, the random access message three may have more than one TBS, such as two, one is 88 bits, one is greater than 88 bits.
  • the network device determines the TBS when receiving the random access process message three:
  • Method 1 Indicate different TBS or different channel quality reporting methods according to random access resources
  • the network device configures different random access resources for different TBSs, and different random access resources correspond to different TBSs.
  • the terminal device selects random access resources to initiate random access according to the needs, and the network device selects random access selected by the terminal device.
  • the resource determines the TBS of the random access procedure message three; or,
  • Network devices configure different random access resources for different channel quality reporting methods, and different channel quality reporting methods corresponding to different random access resources.
  • Terminal devices select random access resources to initiate random access as needed, and network devices The random access resources selected by the device determine the channel quality reporting method of the terminal device.
  • the network device may indicate the modulation mode of the random access process message three, the number of resource units, and TBS in the uplink authorization information of the RAR.
  • Method 2 The network device performs blind detection on different TBS when receiving the random access process message 3.
  • the candidate TBS of message 3 in the random access process can be agreed.
  • the candidate TBS includes 88 bits. For example, it is agreed that there are two candidate TBSs, one is 88 bits, and the other is 104 bits or 120 bits.
  • the terminal device selects a TBS from the candidate TBSs and sends a random access process message to the network device according to the requirements. In order to reduce the complexity of blind detection of network equipment, it may be agreed that the number of resource units of the candidate TBS is the same, or the number of repetitions of the candidate TBS is the same.
  • the terminal device can select the random access procedure message three TBS (TBS Msg3), 88 bits, and the number of repetitions is indicated RAR N Rep message determines that the random access procedure III The number of repetitions.
  • the determined number of repetitions is an integer greater than or equal to N and a minimum integer multiple of L.
  • N TBS Msg3 / 88 ⁇ N Rep
  • ⁇ represents a multiplication operation.
  • L 1, otherwise Represents the number of consecutive subcarriers in an uplink resource unit.
  • the network device sends a random access process message four (Msg4) to the terminal device.
  • Msg4 random access process message four
  • the network device will carry the identification information of the terminal device through Msg4 in S240 to specify the terminal device that wins the conflict in the conflict resolution mechanism. , And other terminal devices that did not win the conflict resolution will re-initiate random access.
  • the coverage level in the current NB-IoT system corresponds to the specific coverage level after comparing the downlink NRSRP measurement value with the pre-configured NRSRP threshold value of the network device.
  • the NRSRP threshold When setting the NRSRP threshold, network equipment should try to ensure the reception performance of the upstream NPRACH preamble. Users with a smaller NRSRP may choose to repeat the preamble multiple times with a PRACH with a high coverage level.
  • the interference level of uplink reception of a network device there is a difference between the interference level of uplink reception of a network device and the interference level of a downlink terminal device. Even for the same NRSRP terminal device, due to the difference in its specific location, the signal-to-interference-plus-noise ratio (SINR) of its downlink reception may also be very different. Therefore, the coverage level determined by NRSRP measurement cannot reflect the downlink channel quality and reception performance of the terminal device.
  • SINR signal-to-interference-plus-noise ratio
  • the network device can usually set the NRSRP threshold for coverage level determination according to the uplink PRACH reception performance.
  • the coverage level determined by the terminal device according to this NRSRP threshold can accurately reflect the uplink receiving situation, but it is difficult to reflect the downlink SINR of the terminal device. Therefore, the network device cannot actually know the downlink coverage of the terminal.
  • it can only configure the conservative maximum number of repetitions of the NPDCCH search space or schedule the downlink data conservatively. This consumes the power of the terminal device and the consumption of system resources. Say there is a big loss.
  • FIG. 6 is a schematic flowchart of a method 300 for measuring channel quality according to an embodiment of the present application. As shown in FIG. 6, the method 300 includes:
  • the network device sends configuration information to the terminal device.
  • the terminal device receives the configuration information sent by the network device, and the configuration information is used to configure a downlink carrier set.
  • the downlink carrier set includes one or more downlink carriers.
  • the configuration information is carried in a system message, and the system message may be SIB22-NB or other system messages.
  • the downlink carrier set may include a downlink carrier configured for random access channel (random access channel, RACH) configured in SIB22-NB or a downlink carrier used for paging.
  • RACH random access channel
  • the downlink carrier set may include a downlink carrier configured for random access channel (RACH) or a subset of downlink carriers configured for paging in SIB22-NB, that is, it may include SIB22-NB Part of the downlink carriers configured for RACH or downlink carriers used for paging.
  • RACH random access channel
  • SIB22-NB Part of the downlink carriers configured for RACH or downlink carriers used for paging.
  • the downlink carrier set may include a downlink carrier associated with the RACH configured in the SIB22-NB.
  • the downlink carrier set may include a downlink carrier configured for measurement by a network device.
  • the downlink carrier set may include an anchor carrier.
  • the configuration information further includes a maximum repetition number Rmax of a common search space for random access on each downlink carrier.
  • the maximum number of repetitions Rmax of the common search space for random access on each downlink carrier may be increased. Values.
  • the maximum number of repetitions of the public search space of the random access resources corresponding to coverage level 0 is 4, and coverage level 1
  • the maximum number of repetitions of the public search space of the corresponding random access resource is 8, and the maximum number of repetitions of the public search space of the random access resource corresponding to coverage level 2 is 16.
  • the Rmax may be the maximum number of repetitions of the common search space for scheduling NPDCCH and Msg2 of Msg2, NPDCCH scheduling Msg3 retransmission, NPDCCH scheduling Msg4, and NPDCCH of Msg4.
  • the terminal device receives first information sent by the network device, where the first information is used to schedule a random access procedure message two Msg2, the first information includes a first parameter, and the first parameter includes a bearer of the first information. Number of repetitions of the downlink channel.
  • the first parameter may be R in the foregoing method 200.
  • the terminal device sends the second information and the third information to the network device.
  • the channel quality of the carrier is related to the first parameter, or the third information is used to indicate that the channel quality of the first downlink carrier is related to the second parameter, and the second parameter includes the second downlink carrier for random access.
  • the maximum number of repetitions of the common search space, the downlink carrier set includes the second downlink carrier.
  • the second information and the third information may be carried in a random access process message III Msg3.
  • the third information may be sent to the network device before the terminal device sends the Msg3.
  • the terminal device may send the third information to the terminal device before sending Msg3, and the terminal device may send the second information to the network device.
  • the terminal device may only Msg3 carries the channel quality information of the downlink carrier.
  • the second information may correspond to the terminal equipment capability information.
  • the terminal device informs the network device of the measured channel quality and the first parameter or the second parameter before sending Msg3.
  • the terminal device can only carry the channel quality information in Msg3, which helps to save Msg3 signaling overhead.
  • the first downlink carrier includes one or more downlink carriers.
  • the first downlink carrier includes one or more downlink carriers in the downlink carrier set.
  • the first downlink carrier includes one or more downlink carriers of the downlink carrier set, which has the best channel quality for the terminal device.
  • the first downlink carrier includes one or more downlink carriers indicated by the network device.
  • the first downlink carrier includes one or more downlink carriers determined by the terminal device according to a preset rule.
  • the second information / third information may be reserved bits or reserved states or idle bits, or an idle state indication, or a MAC CE indication through RRC signaling.
  • the third information is used to indicate that the channel quality of the first downlink carrier is related to the first parameter.
  • the third information is used to indicate that the channel quality of the first downlink carrier is related to R.
  • the correlation between the channel quality of the first downlink carrier and R may also be understood as that the channel quality of the first downlink carrier reported by the terminal device is related to the number of repetitions R of the NPDCCH scheduling Msg2.
  • the terminal device may use RRC signaling or free bits of MAC CE in Msg3 to report the channel quality, and the reported channel quality may be K * R, where the value of K may be 1/4, 1, 4, or, The value of K can be 1/8, 1, 8, or the value of K can be 1/4, 1, 8, or the value of K can be 1/8, 1, 4.
  • the terminal device may use RRC signaling or idle bits of MAC CE in Msg3 to report channel quality, and the reported channel quality may be K * R, where the maximum value of K * R is R and the minimum value is 1.
  • the terminal device reports an index in Msg3, that is, one of ⁇ noMeasurements, candidateRep-1, candidateRep-2, candidateRep-3 ⁇ .
  • Msg3 index in Msg3
  • the mapping relationship between the reported NPDCCH repetition level and the reported amount is as follows As shown:
  • Note1 when R is less than 4, candidateRep-1 is set to 1;
  • candidateRep-3 is set to 2048.
  • the NPDCCH repetition level corresponding to the value reported candidateRep-1 in the above table may also be R / 8 or 1.
  • the NPDCCH repetition level corresponding to the reportedRepdate-3 in the table above may also be 8R or R.
  • the form of a table may be adopted.
  • the terminal device reports an index in Msg3, that is, one of ⁇ noMeasurements, candidateRep-1, candidateRep-2, candidateRep-3 ⁇ , and the mapping between the reported NPDCCH repetition level and the reported amount.
  • the relationship is shown in the following table:
  • the reported NPDCCH repetition level may reflect the channel quality of the downlink carrier.
  • the third information is used to indicate that the channel quality of the first downlink carrier is related to the second parameter.
  • the second parameter is Rmax.
  • the terminal device may use RRC signaling or free bits of MAC CE in Msg3 to report the channel quality, and the reported channel quality may be K * Rmax, where the value of K may be 1/4, 1, 4, or, The value of K can be 1/8, 1, 8, or the value of K can be 1/4, 1, 8, or the value of K can be 1/8, 1, 4.
  • the terminal device may use RRC signaling or idle bits of MAC CE in Msg3 to report channel quality, and the reported channel quality may be K * Rmax, where the maximum value of K * Rmax is Rmax and the minimum value is 1. It can also be in the form of a table.
  • the terminal device reports an index in Msg3, that is, one of ⁇ noMeasurements, candidateRep-1, candidateRep-2, candidateRep-3 ⁇ .
  • the mapping relationship between the reported NPDCCH repetition level and the reported amount is as follows As shown:
  • candidateRep-3 is set to 2048.
  • the NPDCCH repetition level corresponding to the value reported candidateRep-1 in the above table may also be Rmax / 8 or 1.
  • the NPDCCH repetition level corresponding to the value reported candidateRep-3 in the above table may also be 8Rmax or Rmax.
  • the form of a table may be adopted.
  • the terminal device reports an index in Msg3, that is, one of ⁇ noMeasurements, candidateRep-1, candidateRep-2, candidateRep-3 ⁇ , and the mapping between the reported NPDCCH repetition level and the reported amount.
  • the relationship is shown in the following table:
  • the second information and the third information may also be jointly indicated, and one of the states indicates that no measurement is reported.
  • the mapping relationship between the reported NPDCCH repetition level and the reported amount is shown in the following table.
  • candidateRep-3 is set to 2048.
  • candidateRep-3 is set to 2048.
  • the NPDCCH repetition level corresponding to the value reported candidateRep-1 in the above table may also be Rmax / 8 or 1.
  • the NPDCCH repetition level corresponding to the value reported candidateRep-3 in the above table may also be 8Rmax or Rmax.
  • the NPDCCH repetition level corresponding to the reportedRepdate-4 in the above table may also be R / 8 or 1.
  • the NPDCCH repetition level corresponding to the reportedRepdate-6 in the above table may also be 8R or R.
  • the channel quality may be reported by using RRC signaling or the free bits of the MAC CE.
  • the channel quality may also be reported by using an index or other methods. Examples are not limited to this.
  • the first downlink carrier includes a downlink carrier carrying the random access procedure message two.
  • the terminal device can measure the channel quality of the downlink carrier carrying the Msg2, and carry the channel quality of the downlink carrier carrying the Msg2 in Msg3.
  • the second downlink carrier is a downlink carrier carrying the random access procedure message two.
  • the second parameter may be a maximum number of repetitions of a common search space used for random access on a downlink carrier carrying Msg2.
  • the third information indicates that the channel quality of the first downlink carrier is related to the second parameter
  • the terminal device may report the channel quality of the downlink carrier carrying Msg2 in Msg3, and the terminal device determines that the second parameter Rmax is 8.
  • the terminal device determines that the number of repetitions required by the NPDCCH according to the preset transmission parameters to reach the preset block error rate is 7, and the terminal device needs to select the NPDCCH to transmit according to the preset when reporting. Parameter to achieve the minimum number of repetitions required to reach a preset block error rate.
  • the number of repetitions required by the NPDCCH to reach the preset block error rate according to the preset transmission parameters is 7, the NPDCCH repetition level reported by the terminal device is 1, and the NPDCCH reported by the terminal device does not meet the preset bit error rate requirements.
  • the repetition levels are 8 and 32 to meet the preset bit error rate requirements.
  • the preset transmission parameters are shown in the table below.
  • the preset block error rate can be 1%.
  • the terminal device reports the channel quality of the downlink carrier where Msg2 is located in Msg3, which helps to optimize the resource allocation of NPDCCH and NPDSCH for scheduling Msg3 retransmission and Msg4, thereby improving downlink resource efficiency.
  • the channel quality reported by the terminal device is related to the first parameter or the second parameter.
  • the method for reporting the channel quality by the terminal device is more flexible and can be compatible with terminal devices of different capabilities.
  • the terminal device chooses to report a channel quality that is close to the actual measured channel quality. The value helps to save the overhead of the channel quality reported by the terminal equipment.
  • the first downlink carrier includes a third downlink carrier.
  • the third downlink carrier is a downlink carrier with the best channel quality among one or more carriers, and the one or more carriers are determined by the terminal device from the downlink carrier set.
  • the method 300 further includes:
  • the terminal device measures a channel quality of each of the one or more downlink carriers
  • the terminal device determines the first downlink carrier according to the channel quality of each downlink carrier.
  • the first downlink carrier is one or more downlink carriers with the best channel quality among the one or more downlink carriers.
  • the one or more downlink carriers may be a complete set of the downlink carrier set, or may be a subset of the downlink carrier set.
  • the third downlink carrier is determined by the terminal device according to a preset rule.
  • the method further includes:
  • the terminal device determines a first downlink carrier according to a preset rule.
  • the method 300 further includes:
  • the terminal device determines one or more downlink carriers from the downlink carrier set.
  • the downlink carrier set may be a downlink carrier configured for random access or paging configured by a system message, and 15 downlink carriers used for random access or paging are configured in the system message.
  • the terminal device may use the 15 The downlink carrier is determined as the one or more downlink carriers.
  • the downlink carrier set is a downlink carrier associated with the RACH configured in the system message, and 15 downlink carriers for random access or paging are configured in the system message. Only 5 downlink carriers are associated with the RACH, and the terminal The device may determine the five downlink carriers as the one or more downlink carriers.
  • the terminal device determining the first downlink carrier according to a preset rule includes:
  • the terminal device determines a first downlink carrier from the one or more downlink carriers according to a preset rule.
  • the terminal device may use a paging paging carrier among one or more downlink carriers as a downlink measurement carrier.
  • the paging carrier is the minimum index n that satisfies the following formula,
  • IMSI is a set of decimal numbers that can be used as the identity of the terminal device.
  • the terminal device may determine the first downlink carrier according to the identification information of the terminal device.
  • the terminal device may obtain a downlink carrier index according to the terminal device identifier (IMSI) and a value, and then determine the downlink carrier corresponding to the downlink carrier index from the downlink carrier set.
  • the value is a preset value. , It may be less than or equal to the number of carriers in the downlink carrier set, or the value is the number of carriers in the downlink carrier set.
  • the terminal device determines the one.
  • a carrier with a carrier index of “4” among multiple downlink carriers is used as the first downlink carrier.
  • the terminal device may determine the downlink measurement carrier according to the location of the random access resource. For example, there is a mapping relationship between the location of the random access resource and the downlink measurement carrier.
  • the mapping relationship has the following modes:
  • Method 1 Each uplink carrier used for each random access is mapped with a downlink measurement carrier, and the terminal device can determine the first downlink carrier by determining the uplink carrier that sends Msg1.
  • Method 2 Each random access resource of each uplink carrier used for random access is mapped with a downlink measurement carrier, and the terminal device can determine the first downlink carrier by determining the random access resource for sending Msg1.
  • Method 3 Each subcarrier of each random access resource of each uplink carrier used for random access is mapped with a downlink measurement carrier, and the terminal device can determine the first downlink carrier by determining the subcarrier that sends Msg1.
  • the third downlink carrier is indicated by the network device.
  • the method 300 further includes:
  • the network device sends fourth information to the terminal device, and the terminal device receives the fourth information sent by the network device, and the fourth information is used to indicate a first downlink carrier.
  • the fourth information is Msg2.
  • the fourth information is downlink control information DCI.
  • the DCI is a DCI corresponding to an NPDCCH order, and the DCI is used for a random access process triggered by the NPDCCH order.
  • the DCI corresponding to the NPDCCH order may be used to indicate one or more of a position, a subcarrier position, or a repetition number of the uplink carrier where the terminal device sends Msg1.
  • the DCI corresponding to the NPDCCH order may also be used to indicate one or more downlink carriers.
  • the terminal device may measure one or more downlink carriers indicated by the DCI corresponding to the NPDCCH order.
  • the DCI corresponding to the NPDCCH order may be in the DCI format N1, and the idle or reserved bits in the DCI format N1 may be used to indicate the third downlink carrier.
  • the fourth information is a system message, and the fourth message is SIB2-NB or SIB22-NB, or SIB2-NB and SIB22-NB.
  • Specific instructions of the fourth information may include:
  • the network device may indicate a third downlink carrier for each uplink carrier used for random access, and the terminal device may determine the third downlink carrier by determining the uplink carrier that sends Msg1.
  • the network device may indicate a third downlink carrier for each random access resource of each uplink carrier used for random access, and the terminal device may determine the third downlink carrier by determining the random access resource for sending Msg1.
  • the network device may also indicate a third downlink carrier for each subcarrier of each random access resource of each uplink carrier used for random access, and the terminal device may determine the third downlink carrier by determining the subcarrier that sends Msg1 .
  • the third downlink carrier may be determined in the foregoing manners, or may be determined in other manners, which is not limited in the embodiment of the present application.
  • the second downlink carrier is the third carrier.
  • the third information may indicate the channel quality of the downlink carrier carrying Msg2 and the downlink carrier carrying Msg2 The maximum number of repetitions of the common search space for random access on the network is related, or the third information may indicate that the channel quality of the downlink carrier carrying Msg2 is related to the number of repetitions of the downlink channel carrying the first information.
  • the third information may indicate that the channel quality of the third downlink carrier is common to the third downlink carrier.
  • the maximum number of repetitions of the search space is related, or the third information may indicate that the channel quality of the third downlink carrier is related to the number of repetitions of the downlink channel carrying the first information.
  • the third information may indicate the downlink carrier carrying the Msg2 and the third downlink carrier.
  • the channel quality is related to the maximum number of repetitions of the common search space on the third downlink carrier; or the third information may indicate the channel quality of the downlink carrier carrying the Msg2 and the third downlink carrier and the public search on the downlink carrier carrying the Msg2
  • the maximum number of repetitions in space is related; or, the third information may indicate that the channel quality of the downlink carrier and the third downlink carrier carrying Msg2 is related to the number of repetitions of the downlink channel carrying the first information.
  • the second downlink carrier is the third carrier
  • the second parameter includes a maximum value or a minimum value of a maximum repetition number of a common search space for random access on the second downlink carrier.
  • the terminal device can determine a suitable random access resource according to the coverage level.
  • the third downlink carrier For example, for the third downlink carrier, the third downlink carrier There are multiple random access resources on the network. For example, there are three coverage levels.
  • the maximum number of repetitions of the public search space for the random access resources corresponding to coverage level 0, coverage level 1 and coverage level 2 is 2, 4, and 8, respectively.
  • the third information is used to indicate that when the channel quality of the third downlink carrier is related to the second parameter, the second parameter may take a maximum value 8 or a minimum value 2 of the maximum number of repetitions.
  • the selection of the maximum value or the minimum value may be agreed in advance by the terminal device and the network device, or by other methods, which is not limited in the embodiments of the present application.
  • the second parameter may be a maximum value or a minimum value of the multiple repetition times, and may also be another value, and the embodiment of the present application is not limited thereto.
  • the terminal device reports the channel quality of the downlink carrier through Msg3, and the network device determines the load condition of each carrier according to the channel quality reported by all terminal devices, such as the downlink channel quality based on statistical data
  • the network device determines the load condition of each carrier according to the channel quality reported by all terminal devices, such as the downlink channel quality based on statistical data
  • a better carrier has a lighter load
  • a carrier with a lower downlink channel quality has a heavier load, which helps network equipment to achieve load balancing, such as allocating part of the services of the heavier carrier to the lighter carrier.
  • the terminal device reports channel quality in a more flexible manner and can be compatible with terminal devices of different capabilities. For example, some terminal devices do not support modifying RRC messages in Msg3 during random access. This type of terminal device can choose Through Rmax reporting, some terminal devices support modifying RRC messages in Msg3 during random access. This type of terminal device can choose to report through R (because R needs to be obtained during random access).
  • the channel quality is reported through R with finer granularity and the channel quality is reported more accurately.
  • FIG. 7 is a schematic flowchart of a method 400 for measuring channel quality according to an embodiment of the present application. As shown in FIG. 7, the method 400 includes:
  • the network device sends configuration information to the terminal device.
  • the terminal device receives the configuration information sent by the network device, and the configuration information is used to configure a downlink carrier set.
  • the configuration information is carried in a system message.
  • the system message is SIB22-NB or other system messages.
  • the system message includes SIB2-NB and SIB22-NB.
  • the terminal device can select an uplink carrier to send uplink PRACH according to the configuration in SIB2 and SIB22 according to a preset probability, and determine the corresponding coverage level by comparing the NRSRP and NRSRP thresholds. Which NPRACH resource sends Msg1, and determines the downlink carrier corresponding to the selected uplink PRACH resource through the configuration information in SIB2 or SIB22, and learns the corresponding RPDCCH corresponding to the NPDCCH common search space.
  • the NPDCCH and NPDSCH of the Msg2 and the NPDCCH and NPDSCH of the Msg4 scheduled for retransmission of the Msg3 during the random access process of the terminal device will be sent on the downlink carrier.
  • the terminal device may also determine a maximum repetition number Rmax of a common search space for random access on each downlink carrier.
  • the terminal device sends a random access process message Msg1 to the network device, and the network device receives the Msg1 sent by the terminal device.
  • the network device sends a DCI to the terminal device, where the DCI is used to schedule a random access process message II Msg2.
  • the terminal device After the terminal device sends Msg1, and then monitors the common search space of type2-PDCCH in the random access response window (RAR window) of the corresponding downlink carrier, if the corresponding N-PDCCH masked by the RA-RNTI is detected, the terminal device Will read the corresponding NPDSCH, and analyze whether Msg2 in it contains its corresponding random access preamble identifier (RAPID). If there is a corresponding RAPID, the terminal device processes the corresponding RAR and determines the transmission resource of Msg3. And sending time. In this process, the terminal device can obtain the actual number of repeated transmissions R of the corresponding NPDCCH by reading the DCI information for scheduling the NPDSCH carried on the NPDCCH channel.
  • RAPID random access preamble identifier
  • the network device sends Msg2 to the terminal device, and the terminal device receives Msg2 sent by the network device.
  • the method further includes:
  • the terminal device measures the channel quality of the downlink carrier carrying the Msg2; and / or
  • the terminal device measures the channel quality of the third downlink carrier.
  • the terminal device sends a random access process message three Msg3 to the network device, and the network device receives the Msg3 sent by the terminal device.
  • the terminal device before sending the Msg3, the terminal device sends the third information to the network device.
  • the terminal device carries the second information and the third information in the Msg3.
  • the network device determines the channel quality of the first downlink carrier reported by the terminal device according to the Msg3.
  • the network device sends Msg4 to the terminal device, and the terminal device receives Msg4 sent by the network device.
  • An embodiment of the present application further provides a device for implementing any one of the foregoing methods.
  • an apparatus is provided, which includes a unit (or means) for implementing each step performed by a terminal in any one of the above methods.
  • another apparatus is provided, which includes a unit (or means) for implementing each step performed by a network device in any one of the methods.
  • FIG. 8 shows a schematic block diagram of a device 500 for measuring channel quality according to an embodiment of the present application.
  • the device 500 for measuring channel quality may include a transceiver unit 510 and a processing unit 520.
  • the device for measuring channel quality may be a terminal device in the above method 300 and method 400 or a chip configured in the terminal device.
  • the transceiver unit 510 is configured to receive configuration information sent by a network device, where the configuration information is used to configure a downlink carrier set;
  • a processing unit 520 configured to determine the configuration information
  • the transceiver unit 510 is further configured to receive first information sent by the network device, where the first information is used to schedule a random access procedure message two Msg2, the first information includes a first parameter, and the first parameter includes a bearer of the first information. The number of repetitions of the downlink channel of the information;
  • the processing unit 520 is further configured to determine the first parameter
  • the transceiver unit 510 is further configured to send second information and third information to the network device.
  • the second information includes information used to indicate a channel quality of the first downlink carrier
  • the third information is used to indicate the first downlink carrier.
  • the channel quality of the row carrier is related to the first parameter, or the third information is used to indicate that the channel quality of the first downlink carrier is related to the second parameter, and the second parameter includes the second downlink carrier for random access.
  • the maximum number of repetitions of the incoming common search space, and the downlink carrier set includes the second downlink carrier.
  • the first downlink carrier includes a downlink carrier carrying the Msg2.
  • the second downlink carrier is a downlink carrier carrying the Msg2.
  • the first downlink carrier includes a third downlink carrier, where:
  • the third downlink carrier is a downlink carrier with the best channel quality among one or more carriers, and the one or more carriers are determined by the terminal device from the downlink carrier set; or,
  • the third downlink carrier is determined by the terminal device according to a preset rule.
  • the third downlink carrier is indicated by the network device.
  • the second downlink carrier is the third carrier, or the second downlink carrier is a downlink carrier carrying the Msg2.
  • the second downlink carrier is the third carrier
  • the second parameter includes a maximum value or a minimum value of a maximum repetition number of a common search space for random access on the second downlink carrier.
  • the transceiver unit 510 is specifically configured to:
  • the apparatus 500 for measuring channel quality may correspond to the terminal device in the method 300 and method 400 for measuring channel quality according to the embodiments of the present application, and the apparatus 500 for measuring channel quality may include a method 300 for performing channel quality measurement And the method unit of the method performed by the terminal device in method 400.
  • each unit in the apparatus 500 for measuring channel quality and the other operations and / or functions described above are respectively to implement a corresponding process of method 300 and method 400 for measuring channel quality.
  • a specific process of each unit performing the foregoing corresponding steps please refer to the foregoing description of the method embodiments in conjunction with FIG. 6 and FIG. 7. For brevity, details are not described herein again.
  • FIG. 9 shows a schematic block diagram of an apparatus 600 for measuring channel quality according to an embodiment of the present application.
  • the apparatus 600 for measuring channel quality may include a processing unit 610 and a transceiver unit 620.
  • the device for measuring channel quality may be the network device in the above method 300 and method 400 or a chip configured in the network device.
  • a processing unit 610 configured to determine configuration information, where the configuration information is used to configure a downlink carrier set
  • the transceiver unit 620 is configured to send the configuration information to the terminal device
  • the processing unit 610 is further configured to determine first information, which is used to schedule a random access procedure message two Msg2, the first information includes a first parameter, and the first parameter includes a downlink channel carrying the first information. repeat times;
  • the transceiver unit 620 is further configured to send the first information to the terminal device;
  • the transceiver unit 620 is further configured to receive second information and third information sent by the terminal device.
  • the second information includes information used to indicate a channel quality of the first downlink carrier, and the third information is used to indicate the first downlink information.
  • the channel quality of the row carrier is related to the first parameter, or the third information is used to indicate that the channel quality of the first downlink carrier is related to the second parameter, and the second parameter includes the second downlink carrier for random access.
  • the maximum number of repetitions of the incoming common search space, and the downlink carrier set includes the second downlink carrier.
  • the first downlink carrier includes a downlink carrier carrying the Msg2.
  • the second downlink carrier is a downlink carrier carrying the Msg2.
  • the first downlink carrier includes a third downlink carrier, where:
  • the third downlink carrier is a downlink carrier with the best channel quality among one or more carriers, and the one or more carriers are determined by the terminal device from the downlink carrier set; or,
  • the third downlink carrier is determined by the terminal device according to a preset rule.
  • the third downlink carrier is indicated by the network device.
  • the second downlink carrier is the third carrier, or the second downlink carrier is a downlink carrier carrying the Msg2.
  • the second downlink carrier is the third carrier
  • the second parameter includes a maximum value or a minimum value of a maximum repetition number of a common search space for random access on the second downlink carrier.
  • the apparatus 600 for measuring channel quality may correspond to the network device in the method 300 and method 400 for measuring channel quality according to the embodiments of the present application.
  • the apparatus 600 for measuring channel quality may include a method 300 for performing channel quality measurement
  • the method unit of method 400 is performed by a network device.
  • each unit in the apparatus 600 for measuring channel quality and the other operations and / or functions described above are respectively to implement a corresponding process of method 300 and method 400 for measuring channel quality.
  • a specific process of each unit performing the foregoing corresponding steps please refer to the foregoing description of the method embodiments in conjunction with FIG. 6 and FIG. 7. For brevity, details are not described herein again.
  • FIG. 10 shows a schematic structural diagram of a terminal device provided in an embodiment of the present application, which may be the terminal device in the foregoing embodiment, and is used to implement the operation of the terminal device in the foregoing embodiment.
  • the terminal device includes: an antenna 710, a radio frequency portion 720, and a signal processing portion 730.
  • the antenna 710 is connected to the radio frequency portion 720.
  • the radio frequency portion 720 receives information sent by the network device through the antenna 710, and sends the information sent by the network device to the signal processing portion 730 for processing.
  • the signal processing section 730 processes the information of the terminal and sends it to the radio frequency section 720.
  • the radio frequency section 720 processes the information of the terminal device and sends it to the network device via the antenna 710.
  • the signal processing section 730 may include a modulation and demodulation subsystem to implement processing of each communication protocol layer of the data; it may also include a central processing subsystem to implement processing of the terminal operating system and the application layer; in addition, it may also include Other subsystems, such as multimedia subsystem, peripheral subsystem, etc. Among them, the multimedia subsystem is used to control the terminal device camera, screen display, etc., and the peripheral subsystem is used to achieve connection with other devices.
  • the modem subsystem can be a separately set chip.
  • the above device for a terminal may be located in the modem subsystem.
  • the modem subsystem may include one or more processing elements 731, for example, including a main control CPU and other integrated circuits.
  • the modem subsystem may further include a storage element 732 and an interface circuit 733.
  • the storage element 732 is used to store data and programs, but the program for executing the method executed by the terminal in the above method may not be stored in the storage element 732, but stored in a memory other than the modem subsystem, and used When the modem subsystem is loaded and used.
  • the interface circuit 733 is used to communicate with other subsystems.
  • the above device for a terminal may be located in a modulation and demodulation subsystem.
  • the modulation and demodulation subsystem may be implemented by a chip.
  • the chip includes at least one processing element and an interface circuit, and the processing element is configured to execute any one of the above terminal devices.
  • the interface circuit is used to communicate with other devices.
  • a unit of the terminal device that implements each step in the above method may be implemented in the form of a processing element scheduler.
  • a device for a terminal device includes a processing element and a storage element, and the processing element calls a program stored by the storage element to The method performed by the terminal device in the foregoing method embodiments is performed.
  • the storage element may be a storage element whose processing element is on the same chip, that is, an on-chip storage element.
  • the program for executing the method executed by the terminal device in the above method may be a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the processing element calls or loads the program from the off-chip storage element to the on-chip storage element to call and execute the method executed by the terminal in the foregoing method embodiments.
  • the unit for the terminal to implement each step in the above method may be configured as one or more processing elements, and these processing elements are arranged on the modulation and demodulation subsystem.
  • the processing elements here may be integrated circuits, such as : One or more application-specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more ready-made programmable gate arrays (field programmable gates) array, FPGA), or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
  • the unit that implements each step in the above method in the terminal may be integrated together and implemented in the form of a system-on-a-chip (SOC), which is used to implement the above method.
  • SOC system-on-a-chip
  • At least one processing element and storage element may be integrated in the chip, and the method executed by the above terminal may be implemented by the processing element calling the stored program of the storage element; or, at least one integrated circuit may be integrated in the chip to implement the above terminal execution.
  • the functions of some units are implemented in the form of a program called by a processing element, and the functions of some units are implemented in the form of an integrated circuit.
  • the above apparatus for a terminal device may include at least one processing element and an interface circuit, where at least one processing element is configured to execute any method performed by the terminal device provided by the foregoing method embodiment.
  • the processing element may execute a part or all of the steps executed by the terminal in a manner of calling the program stored in the storage element in a first manner; or a method of integrating the logic of the hardware in the processor element with the instruction in a second manner: Some or all of the steps performed by the terminal device are performed in a manner; of course, some or all of the steps performed by the terminal may also be performed in combination with the first and second methods.
  • the processing elements here are the same as described above, and may be general-purpose processors, such as a CPU, or one or more integrated circuits configured to implement the above methods, such as: one or more ASICs, or one or more micro-processing Processor DSP, or one or more FPGAs, or a combination of at least two of these integrated circuit forms.
  • general-purpose processors such as a CPU
  • integrated circuits configured to implement the above methods, such as: one or more ASICs, or one or more micro-processing Processor DSP, or one or more FPGAs, or a combination of at least two of these integrated circuit forms.
  • a storage element may be a single memory or a collective term for multiple storage elements.
  • FIG. 11 shows a schematic structural diagram of a network device according to an embodiment of the present application, which may be the network device in the foregoing embodiment, and is configured to implement the operation of the network device in the foregoing embodiment.
  • the network device includes: an antenna 801, a radio frequency device 802, and a baseband device 803.
  • the antenna 801 is connected to a radio frequency device 802.
  • the radio frequency device 802 receives the information sent by the terminal device through the antenna 801, and sends the information sent by the terminal device to the baseband device 803 for processing.
  • the baseband device 803 processes the information of the terminal and sends it to the radio frequency device 802.
  • the radio frequency device 802 processes the information of the terminal device and sends it to the terminal via the antenna 801.
  • the baseband device 803 may include one or more processing elements 8031, for example, including a main control CPU and other integrated circuits.
  • the baseband device 803 may further include a storage element 8032 and an interface 8033.
  • the storage element 8032 is used to store programs and data; the interface 8033 is used to exchange information with the radio frequency device 802, and the interface is, for example, a common public wireless interface (common public radio interface). , CPRI).
  • the above device for a network device may be located in a baseband device 803.
  • the above device for a network device may be a chip on the baseband device 803.
  • the chip includes at least one processing element and an interface circuit, where the processing element is used to execute the above network.
  • the device executes each step of any method, and the interface circuit is used to communicate with other devices.
  • the unit that the network device implements each step in the above method may be implemented in the form of a processing element scheduler.
  • an apparatus for a network device includes a processing element and a storage element, and the processing element calls a program stored by the storage element to The method performed by the network device in the foregoing method embodiment is performed.
  • the storage element may be a storage element on the same chip as the processing element, that is, an on-chip storage element, or a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the unit that the network device implements each step in the above method may be configured as one or more processing elements, which are disposed on the baseband device.
  • the processing element here may be an integrated circuit, for example: an Or multiple ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
  • a unit that implements each step in the above method of a network device may be integrated together and implemented in the form of an SOC.
  • a baseband device includes the SOC chip to implement the above method.
  • At least one processing element and storage element may be integrated in the chip, and the method executed by the above network device may be implemented by the processing element calling a stored program of the storage element; or, at least one integrated circuit may be integrated in the chip to implement the above network
  • the method executed by the device or, in combination with the above implementation manner, the functions of some units are implemented in the form of a program called by a processing element, and the functions of some units are implemented in the form of an integrated circuit.
  • the above apparatus for a network device may include at least one processing element and an interface circuit, where at least one processing element is configured to execute any method performed by the network device provided by the foregoing method embodiment.
  • the processing element can execute some or all of the steps performed by the network device in the first way: by calling a program stored by the storage element; or in the second way: by using the integrated logic circuit of the hardware in the processor element to combine instructions
  • Some or all of the steps performed by the network device are performed in the manner described above; of course, some or all of the steps performed by the above network device may also be performed in combination with the first and second methods.
  • the terminal device and the network device in the foregoing various device embodiments may completely correspond to the terminal device or the network device in the method embodiment, and corresponding modules or units execute corresponding steps.
  • the receiving unit may be an interface circuit used by the chip to receive signals from other chips or devices.
  • the above sending unit is an interface circuit of the device for sending signals to other devices.
  • the sending unit is the chip for sending signals to other chips or devices. Interface circuit.
  • An embodiment of the present application further provides a communication system including the foregoing terminal device and / or the foregoing network device.
  • the present application further provides a computer program product.
  • the computer program product includes: computer program code that, when the computer program code runs on a computer, causes the computer to execute the method in the foregoing embodiment. .
  • the present application further provides a computer-readable medium.
  • the computer-readable medium stores program code, and when the program code runs on the computer, the computer executes the method in the foregoing embodiment. .
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • 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, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

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Abstract

本申请提供了一种测量信道质量的方法和装置，该方法包括：网络设备向终端设备配置下行载波集合；该网络设备在第一信息中携带第一参数，该第一参数包括承载该第一信息的下行信道的重复次数；该终端设备向该网络设备发送第二信息和第三信息，该第二信息包括用于指示第一下行载波的信道质量的信息，该第三信息用于指示该第一下行载波的信道质量与该第一参数相关，或者，该第三信息用于指示该第一下行载波的信道质量与第二参数相关，该第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，该下行载波集合包括该第二下行载波。本申请实施例的测量信道质量的方法，有助于终端设备节省功耗以及降低系统资源的消耗。

Description

测量信道质量的方法和装置 技术领域
本申请涉及通信领域，并且更具体地，涉及一种测量信道质量的方法和装置。
背景技术
机器类型通信(machine type communication，MTC)又称为机器间通信(machine to machine，M2M)，或者物联网(internet of things，IoT)，将是未来通信领域的一项重要应用。未来的物联网通信的主要可能涵盖智能抄表、医疗检测监控、物流检测、工业检测监控、汽车联网、智能社区以及可穿戴设备通信等等。围绕MTC通信构造的物联网产业被认为是继计算机、互联网和移动通信网之后的第四次浪潮，是未来网络的发展方向。预计到2022年，MTC设备的连接数量将达到500亿。
目前，在IoT系统中，网络设备在窄带物理下行控制信道(narrowband physical downlink control channel，NPDCCH)和窄带物理下行共享信道(narrowband physical downlink shared channel，NPDSCH)调度时，不能确切了解终端设备的下行覆盖情况，这样对终端设备的功耗以及系统资源的消耗来说有较大的损失。
发明内容
有鉴于此，本申请提供一种测量信道质量的方法，使得终端设备节省功耗以及降低系统资源的消耗。
第一方面，提供了一种测量信道质量的方法，该方法包括：终端设备接收网络设备发送的配置信息，该配置信息用于配置下行载波集合；该终端设备接收该网络设备发送的第一信息，该第一信息用于调度随机接入过程消息二Msg2，该第一信息包括第一参数，该第一参数包括承载该第一信息的下行信道的重复次数；该终端设备向该网络设备发送第二信息和第三信息，该第二信息包括用于指示第一下行载波的信道质量的信息，该第三信息用于指示该第一下行载波的信道质量与该第一参数相关，或者，该第三信息用于指示该第一下行载波的信道质量与第二参数相关，该第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，该下行载波集合包括该第二下行载波。
在一些可能的实现方式中，该配置信息承载于系统消息中，该系统消息可以为SIB22-NB或者其它系统消息。
在一些可能的实现方式中，该第一下行载波包括该下行载波集合中一个或者多个下行载波。
本申请实施例中，用于随机接入的公共搜索空间的最大重复次数指的是用于调度随机接入响应(random access response，RAR)，Msg3重传或者Msg4的NPDCCH的公共搜索空间的最大重复次数，其中，RAR可以是承载在Msg2上的。
本申请实施例的测量信道质量的方法，通过终端设备上报一个或者多个下行载波的信 道质量，网络设备可以基于该下行载波的信道质量优化这个载波上的资源分配，有助于提高下行资源效率，从而有助于终端设备节省功耗以及降低系统资源的消耗。
并且，终端设备上报的信道质量与第一参数或者第二参数相关，终端设备上报信道质量的方式更加灵活，可以兼容不同能力的终端设备，同时有助于节省终端设备上报信道质量的开销。
结合第一方面，在第一方面的某些可能的实现方式中，该第一下行载波包括承载该Msg2的下行载波。
本申请实施例中，终端设备通过在Msg3中携带承载Msg2的下行载波的信道质量的信息，有助于网络设备优化调度Msg3重传的下行信道和Msg4的下行信道的资源分配，从而有助于提高下行资源效率。
结合第一方面，在第一方面的某些可能的实现方式中，该第二下行载波为承载该Msg2的下行载波。
结合第一方面，在第一方面的某些可能的实现方式中，该第一下行载波包括第三下行载波，其中，该第三下行载波为一个或者多个载波中信道质量最好的下行载波，该一个或者多个载波由该终端设备从该下行载波集合中确定。
终端设备在Msg3中上报下行测量载波集合内信道质量最好的一个或者多个下行载波的载波位置，以及该载波对应的下行信道质量。网络设备可以基于这个结果，在Msg4中给终端设备分配信道质量最好的下行载波，实现频选调度，同时基于这个载波的下行信道质量，可以优化这个载波上NPDCCH和NPDSCH的资源分配，从而提高下行资源效率。
结合第一方面，在第一方面的某些可能的实现方式中，该第一下行载波包括第三下行载波，其中，该第三下行载波由该终端设备根据预设规则确定；或者，该第三下行载波由该网络设备指示。
本申请实施例中，终端设备上报该终端设备根据预设规则确定或者由网络设备指示的下行载波的信道质量，网络设备根据所有终端设备上报的信道质量，确定每个载波的负载情况，比如根据统计数据，下行信道质量较好的载波负载较轻，下行信道质量较差的载波负载较重，有助于网络设备实现负载均衡，比如将负载较重的载波的部分业务分配到负载较轻的载波上。
本申请实施例中，终端设备通过在Msg3中携带下行载波集合中一个或者多个下行载波的信道质量的信息，网络设备可以基于该下行载波的信道质量优化这个载波上的资源分配，从而有助于提高下行资源效率。
结合第一方面，在第一方面的某些可能的实现方式中，该第二下行载波为该第三载波，或者，该第二下行载波为承载该Msg2的下行载波。
结合第一方面，在第一方面的某些可能的实现方式中，该第二下行载波为该第三载波，该第二参数包括该第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
结合第一方面，在第一方面的某些可能的实现方式中，该终端设备向该网络设备发送第二信息和第三信息，包括：该终端设备在向该网络设备发送随机接入过程消息三Msg3之前，向该网络设备发送该第三信息；该终端设备向该网络设备发送该Msg3，该Msg3包括该第二信息。
在一些可能的实现方式中，该终端设备向该网络设备发送第二信息和第三信息，包括：该终端设备向该网络设备发送随机接入过程消息三Msg3，该Msg3中包括该第二信息和该第三信息。
本申请实施例的测量信道质量的方法，终端设备在发送Msg3之前告知网络设备测量的信道质量与第一参数或者第二参数，终端设备可以在Msg3中只携带信道质量的信息，有助于节省Msg3的信令开销。
第二方面，提供了一种测量信道质量的方法，该方法包括：网络设备向终端设备发送配置信息，该配置信息用于配置下行载波集合；该网络设备向该终端设备发送第一信息，该第一信息用于调度随机接入过程消息二Msg2，该第一信息包括第一参数，该第一参数包括承载该第一信息的下行信道的重复次数；该网络设备接收该终端设备发送第二信息和第三信息，该第二信息包括用于指示第一下行载波的信道质量的信息，该第三信息用于指示该第一下行载波的信道质量与该第一参数相关，或者，该第三信息用于指示该第一下行载波的信道质量与第二参数相关，该第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，该下行载波集合包括该第二下行载波。
结合第二方面，在第二方面的某些可能的实现方式中，该第一下行载波包括承载该Msg2的下行载波。
结合第二方面，在第二方面的某些可能的实现方式中，该第二下行载波为承载该Msg2的下行载波。
结合第二方面，在第二方面的某些可能的实现方式中，该第一下行载波包括第三下行载波，其中，该第三下行载波为一个或者多个载波中信道质量最好的下行载波，该一个或者多个载波由该终端设备从该下行载波集合中确定；或者，该第三下行载波由该终端设备根据预设规则确定；或者，该第三下行载波由该网络设备指示。
结合第二方面，在第二方面的某些可能的实现方式中，该第二下行载波为该第三载波，或者，该第二下行载波为承载该Msg2的下行载波。
结合第二方面，在第二方面的某些可能的实现方式中，该第二下行载波为该第三载波，该第二参数包括该第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
第三方面，提供了一种测量信道质量的装置，用于执行上述第一方面以及第一方面任一可能的实现方式中的方法。具体地，该测量信道质量的装置可以包括用于执行第一方面以及第一方面任一可能的实现方式中的方法的单元。
第四方面，提供了一种测量信道质量的装置，用于执行上述第二方面以及第二方面任一可能的实现方式中的方法。具体地，该测量信道质量的装置可以包括用于执行第二方面以及第二方面任一可能的实现方式中的方法的单元。
第五方面，提供了一种测量信道质量的装置，该装置可以为上述方法设计中的终端设备，或者为设置在终端设备中的芯片。该装置包括：处理器，与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面以及第一方面任一可能的实现方式中终端设备所执行的方法。可选地，该装置还包括存储器。可选地，该装置还包括通信接口，处理器与通信接口耦合。
当该装置为终端设备时，该通信接口可以是收发器，或，输入/输出接口。
当该装置为配置于终端设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第六方面，提供一种测量信道质量的装置，该装置可以为上述方法设计中的网络设备或者为设置在网络设备中的芯片。该装置包括：处理器，与存储器耦合，可用于执行存储器中的指令，以实现上述第二方面以及第二方面任一可能的实现方式中网络设备所执行的方法。可选地，该装置还包括存储器。可选地，该装置还包括通信接口，处理器与通信接口耦合。
当该装置为网络设备时，该通信接口可以是收发器，或，输入/输出接口。
当该装置为配置于网络设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第七方面，提供了一种程序，该程序在被处理器执行时，用于执行第一方面至第二方面提供的方法。
第八方面，提供了一种程序产品，所述程序产品包括：程序代码，当所述程序代码被装置(例如，终端设备或者网络设备)的通信单元、处理单元或收发器、处理器运行时，使得该装置执行上述第一方面至第二方面及其可能的实施方式中的任一方法。
第九方面，提供了一种计算机可读介质，所述计算机可读介质存储有程序，所述程序使得装置(例如，终端设备或者网络设备)执行上述第一方面至第二方面及其可能的实施方式中的任一方法。
附图说明
图1是本申请实施例提供技术方案的应用场景的示意图。
图2是本申请实施例提供的一种网络架构的示意图。
图3是本申请实施例提供的另一种网络架构的示意图。
图4是本申请实施例提供的终端设备与网络设备通过四步完成随机接入的示意性流程图。
图5是本申请实施例提供的随机接入过程中监听Type2的公共搜索空间的示意图。
图6是本申请实施例提供的测量信道质量的方法的一示意性流程图。
图7是本申请实施例提供的测量信道质量的方法的另一示意性流程图。
图8是本申请实施例提供的测量信道质量的装置的示意性框图。
图9是本申请实施例提供的测量信道质量的装置的另一示意性框图。
图10是本申请实施例提供的终端设备的结构示意图。
图11是本申请实施例提供的网络设备的结构示意图
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution， LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)等。
本申请实施例中的终端设备可以指用户设备、接入终端、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。终端设备还可以是蜂窝电话、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、个人数字助理(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公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通信(global system for mobile communications，GSM)系统或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(evoled NodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
在本申请实施例中，终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
图1是本申请实施例提供技术方案的应用场景的示意图，如图1所示，网络设备110 和终端设备120～终端设备170组成了一个通信系统，在该通信系统中，网络设备110可以发送下行信息给终端设备120～终端设备170，终端设备120～终端设备170也可以发送上行信息给网络设备110。此外，终端设备150～终端设备170也可以组成一个通信系统，在该通信系统中，终端设备160可以发送信息给终端设备150和终端设备170，终端设备150和终端设备170也可以发送信息给终端设备160。
应理解，本申请提供的测量信道质量的方法可适用于无线通信系统，例如，图1中所示的无线通信系统中，处于无线通信系统中的两个通信装置间具有无线通信连接，该两个通信装置中的一个通信装置可对应于图1中所示的终端设备，例如，可以为图1中的终端设备160，也可以为配置于终端设备160中的芯片；该两个通信装置中的另一个通信装置可对应于图1中所示的网络设备，例如，可以为图1中的网络设备110，也可以为配置于网络设备110中的芯片。
图2是本申请实施例提供的一种网络架构的示意图，如图2所示，该网络架构包括核心网(CN)设备和无线接入网(radio access network，RAN)设备。其中RAN设备包括基带装置和射频装置，其中基带装置可以由一个节点实现，也可以由多个节点实现，射频装置可以从基带装置拉远独立实现，也可以集成基带装置中，或者部分拉远部分集成在基带装置中。例如，在LTE通信系统中，RAN设备(eNB)包括基带装置和射频装置，其中射频装置可以相对于基带装置拉远布置，例如射频拉远单元(remote radio unit，RRU)相对于BBU拉远布置。
RAN设备和终端之间的通信遵循一定的协议层结构。例如控制面协议层结构可以包括无线资源控制(radio resource control，RRC)层、分组数据汇聚层协议(packet data convergence protocol，PDCP)层、无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理层等协议层的功能。用户面协议层结构可以包括PDCP层、RLC层、MAC层和物理层等协议层的功能；在一种实现中，PDCP层之上还可以包括业务数据适配(service data adaptation protocol，SDAP)层。
这些协议层的功能可以由一个节点实现，或者可以由多个节点实现；例如，在一种演进结构中，RAN设备可以包括集中单元(centralized unit，CU)和分布单元(distributed unit，DU)，多个DU可以由一个CU集中控制。如图2所示，CU和DU可以根据无线网络的协议层划分，例如PDCP层及以上协议层的功能设置在CU，PDCP以下的协议层，例如RLC层和MAC层等的功能设置在DU。
RAN设备可以由一个节点实现RRC、PDCP、RLC、和MAC等协议层的功能；或者可以由多个节点实现这些协议层的功能；例如，在一种演进结构中，RAN设备可以包括CU和DU，多个DU可以由一个CU集中控制。如图2所示，CU和DU可以根据无线网络的协议层划分，例如PDCP层及以上协议层的功能设置在CU，PDCP以下的协议层，例如RLC层和MAC层等的功能设置在DU。
这种协议层的划分仅仅是一种举例，还可以在其它协议层划分，例如在RLC层划分，将RLC层及以上协议层的功能设置在CU，RLC层以下协议层的功能设置在DU；或者，在某个协议层中划分，例如将RLC层的部分功能和RLC层以上的协议层的功能设置在CU，将RLC层的剩余功能和RLC层以下的协议层的功能设置在DU。此外，也可以按其它方式划分，例如按时延划分，将处理时间需要满足时延要求的功能设置在DU，不需要 满足该时延要求的功能设置在CU。
此外，射频装置可以拉远，不放在DU中，也可以集成在DU中，或者部分拉远部分集成在DU中，在此不作任何限制。
请继续参考图3，图3示出了本申请实施例提供的另一种网络架构的示意图，相对于图2所示的架构，还可以将CU的控制面(CP)和用户面(UP)分离，分成不同实体来实现，分别为控制面CU实体(CU-CP实体)和用户面CU实体(CU-UP实体)。
在以上网络架构中，CU产生的信令可以通过DU发送给终端设备，或者终端设备产生的信令可以通过DU发送给CU。DU可以不对该信令进行解析而直接通过协议层封装而透传给终端设备或CU。以下实施例中如果涉及这种信令在DU和终端设备之间的传输，此时，DU对信令的发送或接收包括这种场景。例如，RRC或PDCP层的信令最终会处理为PHY层的信令发送给终端设备，或者，由接收到的PHY层的信令转变而来。在这种架构下，该RRC或PDCP层的信令，即也可以认为是由DU发送的，或者，由DU和射频发送的。
在以上实施例中CU划分为RAN侧的网络设备，此外，也可以将CU划分为CN侧的网络设备，在此不做限制。
本申请以下实施例中的装置，根据其实现的功能，可以位于终端。当采用以上CU-DU的结构时，网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的RAN设备。
在介绍本申请实施例的技术方案之前，先介绍和本申请实施例相关的技术术语。
覆盖等级：网络设备会在系统信息中提供不同覆盖等级窄带参考信号接收功率(narrowband reference signal receiving power，NRSRP)阈值，而NRSRP阈值主要是网络设备根据上行干扰情况确定的(如果上行干扰比较大，则NRSRP阈值设置比较大，使得更多的终端设备处于差覆盖等级上，从而选择差覆盖等级下的窄带物理随机接入信道(narrowband physical random access channel，NPRACH)资源，用更多的重复次数来发NPRACH)，只要NRSRP高于所述门限，终端设备发送的随机接入过程消息一(Msg1)的前导序列(preamble)就会按照预设概率被网络设备检测到。
窄带物联网(narrowband internet of things，NB-IoT)系统需要支持很大的覆盖范围，对处于不同通信环境下的终端设备，网络设备的调度策略将完全不同。例如处于小区中心位置的终端设备无线信道条件较好，网络设备使用较小的功率就能建立可靠的通信链路，并且可以使用大的传输码块、高阶调制、载波绑定等技术手段等快速的完成数据传输；而对处于小区边缘或者地下室的终端设备，无线信道质量较差，网络设备可能需要使用较大的功率才能保持链路，并且在传输数据过程中需要使用小码块、低阶调制、多次重复发送和扩频等技术才能完成数据传输。
为了保证通信的可靠性、节省网络设备的发送功率，需要对不同信道条件的终端设备进行区分，以方便网络设备进行调度。为此NB-IoT系统引入了覆盖等级的概念，处于同一覆盖等级的终端设备的信道传输条件相似，网络设备可以对这类用户采用相似的调度参数，它们占用的控制信令开销也相似。
例如，NB-IoT系统可以划分为3个覆盖等级，离网络设备较近的终端设备覆盖等级为“普通覆盖”，重复次数为不重复；离网络设备较远的终端设备覆盖等级为“边缘覆盖”， 重复次数中等；处于地下室等场景的终端设备覆盖等级为“扩展覆盖”，重复次数可能高达几百次甚至上千次。终端设备根据覆盖等级选择合适的传输次数，可以降低不必要的重复，减少功率开销。
图4示出了本申请实施例提供的终端设备与网络设备通过四步完成随机接入的示意性流程图，应理解，图4以NR中的基于竞争(contention based RA，CBRA)为例，该过程包括：
S210，终端设备向网络设备发送随机接入过程消息一(Msg1)。
应理解，该随机接入过程消息一(Msg1)也可以称为随机接入请求消息或者随机接入前导序列(preamble)。
preamble的主要作用是告诉网络设备有一个随机接入请求，并使得网络设备能够估计其余终端设备之间的传输时延，以便网络设备校准上行定时，并将校准信息通过S220中的随机接入过程消息二(Msg2)告知终端设备。
该终端设备可以选择preamble，在物理随机接入信道(physical random access channel，PRACH)传输。网络设备通过系统消息告知终端设备当前小区可用于传输preamble的PRACH的时频资源集合，该终端设备发起随机接入时，还需要选择PRACH资源，从而发送preamble。
可选地，在该终端设备发送Msg1之前，该方法200还包括：
该网络设备向该终端设备发送系统消息，该系统消息包括上行载波和下行载波的配置信息。
典型的Rel-14中引入的非锚点窄带物联网载波(non-anchor narrowband internet of things carrier，non-anchor NB-IoT carrier)用于RACH为例，网络设备可以在窄带系统消息块2(SIB2-NB)中广播锚点载波(anchor carrier)上的窄带物理随机接入信道(narrowband physical random access channel，NPRACH)资源信息，上行(uplink，UL)锚点载波对应的下行(downlink，DL)窄带物联网载波(narrowband internet of things carrier，NB-IoT carrier)为下行锚点载波(downlink anchor carrier，DL anchor carrier)。
在NB-IoT系统中，对于频分双工(frequency division duplex，FDD)，锚点载波指的是终端设备假设有窄带主同步信号(narrowband primary synchronization signal，NPSS)/窄带辅同步信号(narrowband secondary synchronization signal，NSSS)/窄带物理广播信道(narrowband physical broadcast channel，NPBCH)/窄带系统信息块(system information block-NB，SIB-NB)传输的载波，对于时分双工(time division duplex，TDD)，锚点载波指的是终端设备假设有NPSS/NSSS/NPBCH传输的载波。
在NB-IoT系统中，对于FDD，非锚点载波指的是终端设备假设没有NPSS/NSSS/NPBCH/SIB-NB传输的载波，对于TDD，非锚点载波指的是终端设备假设没有NPSS/NSSS/NPBCH传输的载波。
网络设备可以在窄带系统消息块22(SIB22-NB)中广播一系列非锚点载波(non-anchor carrier)的配置信息，包括一系列DL non-anchor carrier和UL non-anchor carrier的配置信息，例如，每个UL non-anchor carrier上都会按照覆盖等级配置NPRACH资源，并且对每个NPRACH资源可能会配置npdcch-carrierIndex-r14这个参数，这个参数用来指示该NPRACH资源的Msg1对应的Msg2、调度Msg3重传的NPDCCH以及调度Msg4的 NPDCCH和Msg4传输的下行载波标识信息，其中Msg2和Msg4可以通过NPDSCH承载。
针对每个NPRACH资源可能会配置npdcch-NumRepetitions-RA-r14这个参数，这个参数用来指示用于调度RAR，Msg3重传，Msg4的NPDCCH的公共搜索空间的最大重复次数Rmax。
终端设备确定下行载波集合。系统消息(例如，SIB22-NB)中会配置一个下行载波列表，列表中的每一个条目中包括载波的配置信息，该配置信息包括载波中心频点位置，部署模式，参考信号功率配置，有效子帧配置，下行间隔配置等。下行载波可以进行编号，比如列表中的第一个条目的索引是‘1’，第二个条目的索引是‘2’，依次类推。后续可以根据这个索引寻址下行载波。
所述测量载波集合可以是系统消息配置的用于随机接入(RACH)或者寻呼(paging)的下行载波。例如，系统消息中配置了15个用于随机接入或者寻呼的下行载波，这15个下行载波可以作为下行载波集合。
又例如，下行载波集合是系统消息中配置的和RACH关联的下行载波，即RACH资源配置中指定的用于Msg2，和调度Msg3重传的NPDCCH以及调度Msg4的NPDCCH和Msg4传输的下行载波，其中Msg2和Msg4可以通过NPDSCH承载。如系统消息中配置了15个用于随机接入或者寻呼的下行载波，只有5个下行载波与RACH有关联，则这5个下行载波可以作为下行载波集合。
可选地，该方法200还包括：
该终端设备确定第一上行载波；
该终端设备在该第一上行载波上，向该网络设备发送该Msg1。
具体而言，终端设备可以根据SIB2-NB和SIB22-NB中的配置，按照预设概率选择某个上行载波发送Msg1。
可选地，该终端设备根据覆盖等级，确定该第一上行载波上的第一随机接入信道资源；
该终端设备在该第一随机接入信道资源上，向该网络设备发送Msg1。
具体而言，终端设备还需要在第一上行载波上选择某个PRACH资源来发送Msg1，该终端设备可以通过覆盖等级，确定在第一上行载波的哪个PRACH资源上发送Msg1，通过SIB2或者SIB22中的配置信息，确定被选择的上行PRACH资源对应的下行载波，终端设备从而获知RACH过程中调度Msg2的NPDCCH和Msg2、以及调度Msg3重传的NPDCCH和调度Msg4的NPDCCH和Msg4均会在所述下行载波上发送，其中Msg2和Msg4可以通过NPDSCH承载。
下面介绍终端设备确定自己的覆盖等级的过程：
(1)终端设备根据下行NB-IoT载波上发送的窄带参考信号(narrowband reference signal，NRS)测量得到终端设备上测量的载波的NRSRP(所述NRSRP直接反应网络设备到终端设备之间的无线信号的传输损耗)。
(2)终端设备将测量得到的NRSRP和若干个NRSRP阈值比较(NRSRP阈值通过系统消息下发)，根据比较结果判定其覆盖等级。
NB-IoT中系统消息最多能下发2个NRSRP阈值，以下发两个NRSRP阈值(NRSRP threshold 1,NRSRP threshold 2)为例，如果终端设备测量的NRSRP<NRSRP threshold 2，则终端设备处于覆盖等级2(对应扩展覆盖)；否则，如果终端设备测量的NRSRP value< NRSRP threshold 1，则终端设备处于覆盖等级1(对应边缘覆盖)；否则，终端设备处于覆盖等级0(对应普通覆盖)。网络设备根据不同的覆盖等级会配置不同的NPRACH资源，该NPRACH资源包括重复次数(可以取值1，2，4，8，16，32，64，128)，子载波个数，用于随机接入响应的NPDCCH的公共搜索空间(common search space for random access response)的配置信息等。
终端设备根据测量得到的NRSRP，和NRSRP阈值比较得到相应的覆盖等级，在所述覆盖等级对应的NPRACH资源上发送Msg1。对于不同覆盖等级，终端设备会选用不同的NPRACH功控方式和重复次数来发送Msg1，从而保证上行的NPRACH接收的接收性能。
S220，该网络设备向该终端设备发送随机接入过程消息二(Msg2)。
应理解，该随机接入过程消息二(Msg2)也可以称为随机接入响应消息。
具体而言，该网络设备收到该终端设备发送的preamble之后，发送对应的随机接入响应(RA response，RAR)给该终端设备，可以包含传输S230中随机接入过程消息三(Msg3)的时域和频域信息，用于Msg3的调制编码方式，preamble标识，定时提前量(TA)信息，初始的上行授权(uplink grant，UL grant)信息，还可以携带该终端设备的标识信息，对于CBRA，该终端设备收到RAR后，判断RAR中的preamble标识是否与S210中发送的preamble相同，如果相同，则认为RAR接收成功，否则，认为RAR接收失败，该终端设备可以重新触发RA过程。
可选地，该网络设备向终端设备发送Msg2之前，该方法200还包括：
该网络设备向该终端设备发送下行控制信息DCI，该DCI用于调度该Msg2。
该DCI是通过NPDCCH承载，终端设备需要监听一个NPDCCH候选集合以获取调度信息，该NPDCCH候选集合称为搜索空间。
以RACH过程中监听的Type2的公共搜索空间(common search space，CSS)为例，如图5所示。Type2-CSS周期性地出现，周期和其在每个周期内的起始位置均在系统消息中指示。具体地，系统消息中会携带参数Rmax、起始子帧配置参数G、起始子帧分数周期偏移值αoffset，其中，G用于调节搜索空间的密度，如果保持搜索空间的有效持续时间Rmax不变，G值越大，周期G*Rmax越大，一定时间内搜索空间的个数会减少。
Type2-CSS出现的周期为G*Rmax(ms)，在每个周期内的持续时间为Rmax个有效子帧，起始位置为从每个周期的起始位置处向后偏移G*Rmax*αoffset(ms)。在一个Type2-CSS中，候选(candidate)的起始位置可以有多个。Type2-CSS的candidate的重复次数可为Rmax，Rmax/2，Rmax/4或者Rmax/8中的整数值。
应理解，Rmax的单位是有效子帧数，有效子帧数简单来说就是可以用于NPDCCH和NPDSCH传输的子帧，因为下行传输会有一些子帧用于发送公共信号，比如用于发送NPSS，NSSS，NPBCH，SIB1-NB的子帧，或者用于后向扩展的子帧，这些子帧不可以用于NPDCCH/NPDSCH传输，NPDCCH/NPDSCH传输遇到这些无效子帧会跳过，这些子帧也不参与有效子帧的计数。
DCI的重复次数R是通过DCI子帧重复次数域进行指示的，DCI子帧重复次数域位于DCI中。如下表所示DCI子帧重复次数域可以通过2bit指示R。终端设备如果成功接收该DCI，会从该DCI中的该DCI子帧重复次数域获取R。
Figure PCTCN2018107926-appb-000001
S230，该终端设备向该网络设备发送随机接入过程消息三(Msg3)。
具体而言，该终端设备根据RAR中指示的UL grant信息在对应的上行传输资源通过物理上行共享信道(physical uplink shared channel，PUSCH)发送数据，可以包含RRC消息，该终端设备的标识信息，例如该终端设备的C-RNTI信息，该终端设备的恢复标识(Resume ID)或者不活跃标识(Inactive RNTI，I-RNTI)，其中所述Resume ID或者I-RNTI由网络设备分配给该终端设备，该终端设备上报所述标识用于网络设备识别该终端设备的身份以及相关配置信息等用途。
对于NB-IoT，该终端设备的标识信息，可以是SAE临时移动用户标识(SAE temporary mobile station identifier,S-TMSI)，或者随机值。
在NB-IoT系统中，对于非数据早传场景，随机接入过程消息三的传输块大小(transport block size，TBS)为88比特，在随机接入过程消息三Msg3上报信道质量时，对于不支持在随机接入过程中更新RRC消息的终端设备，可以通过MAC CE的方式上报信道质量，即可以通过随机接入过程消息三的MAC CE的方式上报信道质量。随机接入过程消息三的上行授权信息是通过RAR进行指示的，RAR承载在随机接入过程消息二上，所述上行授权信息包括：
-上行子载波间隔Δf，用于指示子载波间隔为3.75kHz或者15kHz；
-子载波指示域I sc，用于指示子载波数量及子载波位置；
-调度时延域，用于确定RAR和随机接入过程消息三之间的时延；
-随机接入过程消息三的重复次数；
-MCS索引，用于指示随机接入过程消息三的调制方式，资源单元数N RU，TBS，如下表所示。
Figure PCTCN2018107926-appb-000002
通过随机接入过程消息三的MAC CE的方式上报信道质量可能会使得随机接入过程消息三的TBS超过88比特，即随机接入消息三可能有大于一种TBS，比如两种，一种是88比特，一种是大于88比特。关于网络设备在接收随机接入过程消息三时如何确定TBS有两种方式：
方式一：根据随机接入资源来指示不同的TBS或者不同的信道质量上报方式
网络设备针对不同的TBS配置不同的随机接入资源，不同的随机接入资源对应的不同的TBS，终端设备根据需要选择随机接入资源发起随机接入，网络设备根据终端设备选择的随机接入资源确定随机接入过程消息三的TBS；或者，
网络设备针对不同的信道质量上报方式配置不同的随机接入资源，不同的随机接入资源对应的不同的信道质量上报方式，终端设备根据需要选择随机接入资源发起随机接入，网络设备根据终端设备选择的随机接入资源确定终端设备的信道质量的上报方式。网络设备可以在RAR的上行授权信息中MCS索引域指示随机接入过程消息三的调制方式，资源单元数，TBS。对于新的TBS，即不同于88比特的TBS，可以通过MCS中的预留状态进行指示，具体地，可以通过I MCS＝3,4,5,6,7中的一个或者多个预留状态进行指示。
方式二：网络设备在接收随机接入过程消息三时对不同的TBS进行盲检测
随机接入过程消息三的候选TBS可以约定，候选TBS包括88bit，比如约定候选TBS有两个，一个是88比特，另一个是104比特或者120比特。终端设备根据需要从候选TBS中选择一个TBS向网络设备发送随机接入过程消息三。为了减少网络设备盲检测的复杂度，可以约定候选TBS的资源单元数相同，或者候选TBS的重复次数相同。当约定候选TBS的资源单元数相同时，终端设备可以根据随机接入过程消息三的选择的TBS(TBS Msg3)，88比特和RAR中指示的重复次数为N Rep确定随机接入过程消息三的重复次数，确定的重复次数为大于或者等于N且为L的最小整数倍的整数。
其中，上述N满足N＝TBS Msg3/88·N Rep，“·”表示乘法运算。其中，上述L的取值根据以下方式确定：当
Figure PCTCN2018107926-appb-000003
L＝1，否则
Figure PCTCN2018107926-appb-000004
Figure PCTCN2018107926-appb-000005
表示上行资源单元中连续的子载波数。
S240，该网络设备向该终端设备发送随机接入过程消息四(Msg4)。
具体而言，由于S230中该终端设备会携带该终端设备的标识信息，因此网络设备在冲突解决机制中，会通过S240中的Msg4携带该终端设备的标识信息以指定冲突消除中胜出的终端设备，而其他没有在冲突消除中胜出的终端设备将重新发起随机接入。
可以看到，目前NB-IoT系统中的覆盖等级，是通过下行NRSRP测量值和网络设备预配置的NRSRP阈值进行比较后，对应到具体的覆盖等级上。网络设备在设置NRSRP阈值时，应该尽量保证上行NPRACH preamble的接收性能，NRSRP较小的用户，可能会选择覆盖等级高的PRACH多次重复发送preamble。
然而，在实际网络部署中，网络设备的上行接收的干扰水平和下行终端设备的干扰水平存在差异。即便对于相同的NRSRP的终端设备来说，由于其所处具体位置的不同，其下行接收的信干噪比(signal to interference plus noise ratio，SINR)也可能存在很大的差异。因此，通过NRSRP测量确定的覆盖等级，不能反映终端设备的下行信道质量和接收性能。
网络设备通常可以按照上行PRACH接收性能来设置覆盖等级判定的NRSRP阈值。终端设备根据此NRSRP阈值确定的覆盖等级能够比较准确地反映了上行的接收情况，但是却很难反映终端设备的下行SINR。因此，网络设备实际上不能确切了解终端的下行覆盖情况，通常只能配置较为保守的NPDCCH搜索空间的最大重复次数或者较为保守地调度下行数据，这样对终端设备的功耗以及系统资源的消耗来说有较大的损失。
图6是本申请实施例提供的测量信道质量的方法300的示意性流程图，如图6所示，该方法300包括：
S310，网络设备向终端设备发送配置信息，该终端设备接收该网络设备发送的配置信息，该配置信息用于配置下行载波集合。
可选地，该下行载波集合中包括一个或者多个下行载波。
可选地，该配置信息承载于系统消息中，该系统消息可以为SIB22-NB或者其它系统消息。
可选地，该下行载波集合可以包括SIB22-NB中配置的用于随机接入信道(random access channel，RACH)的下行载波或者用于寻呼的下行载波。
可选地，该下行载波集合可以包括SIB22-NB中配置的用于随机接入信道(random access channel，RACH)的下行载波或者用于寻呼的下行载波的子集，即可以包括SIB22-NB中配置的用于RACH的下行载波或者用于寻呼的下行载波中的一部分下行载波。
可选地，该下行载波集合可以包括SIB22-NB中配置的和RACH相关联的下行载波。
可选地，该下行载波集合可以包括网络设备配置的用于测量的下行载波。
可选地，该下行载波集合可以包括锚点(anchor)载波。
可选地，该配置信息中还包括每个下行载波上用于随机接入的公共搜索空间的最大重复次数Rmax。
应理解，由于每个下行载波上的随机接入资源(例如，NPRACH资源)对应不同的覆盖等级，则每个下行载波上用于随机接入的公共搜索空间的最大重复次数Rmax可能会有多个值。
例如，某一个下行载波上的不同随机接入资源对应的不同覆盖等级，以3个覆盖等级为例，覆盖等级0对应的随机接入资源的公共搜索空间的最大重复次数为4，覆盖等级1对应的随机接入资源的公共搜索空间的最大重复次数为8，覆盖等级2对应的随机接入资源的公共搜索空间的最大重复次数为16。
可选地，该Rmax可以是用于调度Msg2的NPDCCH和Msg2、调度Msg3重传的NPDCCH、调度Msg4的NPDCCH和Msg4的NPDCCH的公共搜索空间的最大重复次数。
S320，该终端设备接收该网络设备发送的第一信息，该第一信息用于调度随机接入过程消息二Msg2，该第一信息包括第一参数，该第一参数包括承载该第一信息的下行信道的重复次数。
应理解，该第一参数可以为上述方法200中的R。
S330，该终端设备向该网络设备发送第二信息和第三信息。该网络设备接收该终端设备发送的该第二信息和该第三信息，该第二信息包括用于指示第一下行载波的信道质量的信息，该第三信息用于指示该第一下行载波的信道质量与该第一参数相关，或者，该第三信息用于指示该第一下行载波的信道质量与第二参数相关，该第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，该下行载波集合包括该第二下行载波。
可选地，该第二信息和该第三信息可以承载在随机接入过程消息三Msg3中。
可选地，该第三信息可以在终端设备发送该Msg3之前发送给该网络设备。
具体而言，该终端设备可以在发送Msg3之前将该第三信息发送给该终端设备，该终端设备可以将该第二信息发送给网络设备，以后终端设备再一次上报信道质量时，可以只在Msg3中携带下行载波的信道质量的信息。该第二信息可以对应终端设备能力信息。
本申请实施例的测量信道质量的方法，终端设备在发送Msg3之前告知网络设备测量的信道质量与第一参数或者第二参数，终端设备可以在Msg3中只携带信道质量的信息，有助于节省Msg3的信令开销。
可选地，该第一下行载波包括一个或者多个下行载波。
可选地，该第一下行载波包括该下行载波集合中一个或者多个下行载波。
可选地，该第一下行载波包括下行载波集合的一个或者多个下行载波中对于该终端设备来说信道质量最好的一个或者多个下行载波。
可选地，该第一下行载波包括该网络设备指示的一个或者多个下行载波。
可选地，该第一下行载波包括该终端设备根据预设规则确定的一个或者多个下行载波。
可选地，第二信息/第三信息可以通过RRC信令预留比特或者预留状态或者空闲比特，或者空闲状态指示，或者MAC CE指示。
可选地，该第三信息用于指示第一下行载波的信道质量与该第一参数相关。
可选地，该第三信息用于指示第一下行载波的信道质量与R相关。
应理解，该第一下行载波的信道质量与R相关还可以理解为该终端设备上报的第一下行载波的信道质量和调度Msg2的NPDCCH的重复次数R相关。
例如，终端设备可以在Msg3中采用RRC信令或者MAC CE的空闲比特上报信道质量，上报的信道质量可以是K*R，其中，K的取值可以为1/4，1，4，或者，K的取值可以为1/8，1，8，或者，K的取值可以为1/4，1，8，或者，K的取值可以为1/8，1，4。
又例如，终端设备可以在Msg3中采用RRC信令或者MAC CE的空闲比特上报信道质量，上报的信道质量可以是K*R，其中K*R的最大值为R，最小值为1。
也可以采用表格的形式，终端设备在Msg3中上报一个索引，即上报{noMeasurements，candidateRep-1，candidateRep-2，candidateRep-3}中的一个，上报的NPDCCH重复等级和上报量的映射关系如下表所示：
上报值 NPDCCH重复等级
noMeasurements 无测量上报
candidateRep-1 R/4(Note1)
candidateRep-2 R
candidateRep-3 4R(Note2)
其中，Note1：当R小于4时，candidateRep-1设置为1；
Note2：当R大于512，candidateRep-3设置为2048。
上表中上报值candidateRep-1对应的NPDCCH重复等级也可以为R/8或1。
上表中上报值candidateRep-3对应的NPDCCH重复等级也可以为8R或R。
应理解，上表仅仅是一个示例，本申请实施例中并不对上表中各个上报值的顺序作任何限制。
又一个例子，可以采用表格的形式，终端设备在Msg3中上报一个索引，即上报{noMeasurements，candidateRep-1，candidateRep-2，candidateRep-3}中的一个，上报的NPDCCH重复等级和上报量的映射关系如下表所示：
Figure PCTCN2018107926-appb-000006
应理解，本申请实施例中，上报的NPDCCH重复等级可以反映下行载波的信道质量。
可选地，该第三信息用于指示第一下行载波的信道质量与该第二参数相关。
可选地，该第二参数为Rmax。
应理解，上述方法200中已经对Rmax进行过说明，为了简洁，在此不再赘述。
例如，终端设备可以在Msg3中采用RRC信令或者MAC CE的空闲比特上报信道质量，上报的信道质量可以是K*Rmax，其中，K的取值可以为1/4，1，4，或者，K的取值可以为1/8，1，8，或者，K的取值可以为1/4，1，8，或者，K的取值可以为1/8，1，4。
又例如，终端设备可以在Msg3中采用RRC信令或者MAC CE的空闲比特上报信道质量，上报的信道质量可以是K*Rmax，其中K*Rmax的最大值为Rmax，最小值为1。也可以采用表格的形式，终端设备在Msg3中上报一个索引，即上报{noMeasurements，candidateRep-1，candidateRep-2，candidateRep-3}中的一个，上报的NPDCCH重复等级和上报量的映射关系如下表所示：
上报值 NPDCCH重复等级
noMeasurements 无测量上报
candidateRep-1 Rmax/4(Note1)
candidateRep-2 Rmax
candidateRep-3 4Rmax(Note2)
其中，Note1：当Rmax小于4时，candidateRep-1设置为1；
Note2：当Rmax大于512，candidateRep-3设置为2048。
上表中上报值candidateRep-1对应的NPDCCH重复等级也可以为Rmax/8或1。
上表中上报值candidateRep-3对应的NPDCCH重复等级也可以为8Rmax或Rmax。
应理解，上表仅仅是一个示例，本申请实施例中并不对上表中各个上报值的顺序作任何限制。
又一个例子，可以采用表格的形式，终端设备在Msg3中上报一个索引，即上报{noMeasurements，candidateRep-1，candidateRep-2，candidateRep-3}中的一个，上报的NPDCCH重复等级和上报量的映射关系如下表所示：
Figure PCTCN2018107926-appb-000007
可选地，第二信息和第三信息也可以联合指示的方式，其中一个状态表示没有测量上报。上报的NPDCCH重复等级和上报量的映射关系如下表所示。
上报值 NPDCCH重复等级
noMeasurements 无测量上报
candidateRep-1 Rmax/4(Note1)
candidateRep-2 Rmax
candidateRep-3 4Rmax(Note2)
candidateRep-4 R/4(Note3)
candidateRep-5 R
candidateRep-6 4R(Note4)
其中，Note1：当Rmax小于4时，candidateRep-1设置为1；
Note2：当Rmax大于512，candidateRep-3设置为2048。
Note3:当R小于4时，candidateRep-1设置为1；
Note4：当R大于512，candidateRep-3设置为2048。
上表中上报值candidateRep-1对应的NPDCCH重复等级也可以为Rmax/8或1。
上表中上报值candidateRep-3对应的NPDCCH重复等级也可以为8Rmax或Rmax。
上表中上报值candidateRep-4对应的NPDCCH重复等级也可以为R/8或1。
上表中上报值candidateRep-6对应的NPDCCH重复等级也可以为8R或R。
应理解，上表仅仅是一个示例，本申请实施例中并不对上表中各个上报值的顺序作任何限制。
应理解，本申请实施例中，上报信道质量的方式可以是采用RRC信令或者MAC CE的空闲比特上报信道质量，也可以是通过上报索引的方式，还可以是通过其他方式上报，本申请实施例并不限于此。
可选地，该第一下行载波包括承载该随机接入过程消息二的下行载波。
具体而言，该终端设备可以对承载该Msg2的下行载波的信道质量进行测量，并在Msg3中携带该承载Msg2的下行载波的信道质量。
可选地，该第二下行载波为承载该随机接入过程消息二的下行载波。
具体而言，该第二参数可以为承载Msg2的下行载波上用于随机接入的公共搜索空间的最大重复次数。
例如，该第三信息指示该第一下行载波的信道质量与该第二参数相关，该终端设备可以在Msg3中上报承载Msg2的下行载波的信道质量，该终端设备确定该第二参数Rmax为8，该终端设备通过测量承载Msg2的下行载波的信道质量确定NPDCCH按照预设传输参数以达到预设的误块率所需要的重复次数为7，终端设备在上报时需要选择NPDCCH按照预设传输参数以达到预设的误块率所需要的最小重复次数。比如上报NPDCCH重复等级的可选取值为K*Rmax，K＝1/8，1或者4，即上报NPDCCH重复等级的可选取值为1，8，32。根据测量结果，NPDCCH按照预设传输参数以达到预设的误块率所需要的重复次数为7，终端设备上报的NPDCCH重复等级为1，不满足预设误码率要求，终端设备上报的NPDCCH重复等级为8和32，从而满足预设误码率要求，因此终端设备确定NPDCCH按照预设传输参数以达到预设的误块率所需要的最小重复次数为8，则终端设备可以在RRC信令或者MAC CE的空闲比特中指示该信道质量为8(即K＝1)，或者，该终端设备可以上报一个索引“candidateRep-2”，网络设备即可确定上报的NPDCCH重复次数为8。预设传输参数如下表所示，预设的误块率可以为1％。
Figure PCTCN2018107926-appb-000008
Figure PCTCN2018107926-appb-000009
本申请实施例中，终端设备在Msg3中上报Msg2所在下行载波的信道质量，有助于优化调度Msg3重传的NPDCCH和Msg4的NPDCCH和NPDSCH的资源分配，从而提高下行资源效率。
终端设备上报的信道质量与第一参数或者第二参数相关，终端设备上报信道质量的方式更加灵活，可以兼容不同能力的终端设备，同时，终端设备选择上报一个与实际测量得到的信道质量接近的数值，有助于节省终端设备上报信道质量的开销。
可选地，该第一下行载波包括第三下行载波。
可选地，该第三下行载波为一个或者多个载波中信道质量最好的下行载波，该一个或者多个载波由该终端设备从该下行载波集合中确定。
可选地，该方法300还包括：
该终端设备从该下行载波集合中确定一个或者多个载波；
该终端设备测量该一个或者多个下行载波中每个下行载波的信道质量；
该终端设备根据该每个下行载波的信道质量，确定该第一下行载波。
可选地，该第一下行载波为该一个或者多个下行载波中信道质量最好的一个或多个下行载波。
应理解，本申请实施例中，该一个或者多个下行载波可以为该下行载波集合的全集，或者，可以为该下行载波集合的子集。
可选地，该第三下行载波由该终端设备根据预设规则确定。
可选地，该方法还包括：
该终端设备根据预设规则，确定第一下行载波。
可选地，该终端设备根据预设规则，确定第一下行载波之前，该方法300还包括：
该终端设备从该下行载波集合中确定一个或者多个下行载波。
例如，下行载波集合可以是系统消息配置的用于随机接入或者寻呼的下行载波，系统消息中配置了15个用于随机接入或者寻呼的下行载波，该终端设备可以将这15个下行载波确定为该一个或者多个下行载波。
又例如，下行载波集合是系统消息中配置的和RACH关联的下行载波，系统消息中配置了15个用于随机接入或者寻呼的下行载波，只有5个下行载波与RACH有关联，该终端设备可以将这5个下行载波确定为该一个或者多个下行载波。
该终端设备根据预设规则，确定第一下行载波，包括：
该终端设备根据预设规则，从该一个或者多个下行载波中确定第一下行载波。
可选地，该终端设备可以将一个或者多个下行载波中的寻呼paging载波作为下行测量载波。
paging载波为满足下式的最小索引n，
floor(UE_ID/(N*Ns))mod W<W(0)+W(1)+…+W(n)。
其中，UE_ID＝IMSI mod 4096或者UE_ID＝IMSI mod 16384，W(n)为载波n的权重，N＝min(T，nB)，Ns＝max(1，nB/T),其中T和nB由网络设备配置。IMSI为一组十进制数序列，可作为终端设备的标识。
可选地，该终端设备可以根据该终端设备的标识信息，确定该第一下行载波。
例如，该终端设备可以根据该终端设备的标识(IMSI)和一个数值取模，得到下行载波的索引，然后从该下行载波集合中确定该下行载波索引对应的下行载波，该数值为预设值，可以小于或者等于下行载波集合中载波个数，或者该数值为下行载波集合中载波个数。
又例如，该一个或者多个下行载波中包括5个下行载波，按照一定顺序载波索引为0～4，该终端设备通过IMSI与M取模得到载波的索引为4，则该终端设备确定该一个或者多个下行载波中载波索引为“4”的载波作为第一下行载波。
可选地，该终端设备可以根据随机接入的资源位置确定下行测量载波，例如随机接入资源位置和下行测量载波之间有一个映射关系，映射关系有以下方式：
方式1：每个用于每个随机接入的上行载波映射一个下行测量载波，终端设备确定发送Msg1的上行载波即可确定第一下行载波。
方式2：每个用于随机接入的上行载波的每个随机接入资源映射一个下行测量载波，终端设备确定发送Msg1的随机接入资源即可确定第一下行载波。
方式3：每个用于随机接入的上行载波的每个随机接入资源的每个子载波映射一个下行测量载波，终端设备确定发送Msg1的子载波即可确定第一下行载波。
可选地，该第三下行载波由该网络设备指示。
可选地，该终端设备向该网络设备发送随机接入过程消息三Msg3之前，该方法300还包括：
该网络设备向该终端设备发送第四信息，该终端设备接收该网络设备发送的该第四信息，该第四信息用于指示第一下行载波。
可选地，该第四信息为Msg2。
可选地，该第四信息为下行控制信息DCI。
可选地，该DCI为NPDCCH order对应的DCI，该DCI用于通过NPDCCH order触发的随机接入过程。
本申请实施例中，该NPDCCH order对应的DCI可以用于指示终端设备发送Msg1的上行载波的位置、子载波位置或者重复次数中的一种或者多种。
可选地，该NPDCCH order对应的DCI还可以用于指示一个或者多个下行载波，终端设备在接收到该DCI后，可以对NPDCCH order对应的DCI指示的一个或者多个下行载波进行测量。
应理解，本申请实施例中，对于NB-IoT系统，NPDCCH order对应的DCI可以为DCI格式N1，可以使用DCI格式N1中的空闲比特或者预留比特来指示该第三下行载波。
可选地，该第四信息为系统消息，第四消息为SIB2-NB或者SIB22-NB，或者SIB2-NB和SIB22-NB。第四信息的具体指示方式可以有：
方式1：网络设备可以为每个用于随机接入的上行载波指示第三下行载波，终端设备确定发送Msg1的上行载波即可确定第三下行载波。
方式2：网络设备可以为每个用于随机接入的上行载波的每个随机接入资源指示第三 下行载波，终端设备确定发送Msg1的随机接入资源即可确定第三下行载波。
方式3：网络设备也可以为每个用于随机接入的上行载波的每个随机接入资源的每个子载波指示第三下行载波，终端设备确定发送Msg1的子载波即可确定第三下行载波。
应理解，第三下行载波可以为由以上几种方式确定，也可以由其他方式确定，本申请实施例对此并不作任何限定。
可选地，该第二下行载波为该第三载波。
可选地，本申请实施例中，若该终端设备只在Msg3中上报承载Msg2的下行载波的信道质量，则该第三信息可以指示该承载Msg2的下行载波的信道质量与承载Msg2的下行载波上用于随机接入的公共搜索空间的最大重复次数相关，或者，该第三信息可以指示该承载Msg2的下行载波的信道质量与承载该第一信息的下行信道的重复次数相关。
可选地，本申请实施例中，若该终端设备只在Msg3中上报第三下行载波的信道质量，则该第三信息可以指示该第三下行载波的信道质量与该第三下行载波上公共搜索空间的最大重复次数相关，或者，该第三信息可以指示该第三下行载波的信道质量与承载该第一信息的下行信道的重复次数相关。
可选地，本申请实施例中，若该终端设备在Msg3中上报承载Msg2的下行载波和第三下行载波的信道质量，则该第三信息可以指示该承载Msg2的下行载波和第三下行载波的信道质量与该第三下行载波上公共搜索空间的最大重复次数相关；或者，该第三信息可以指示该承载Msg2的下行载波和第三下行载波的信道质量与承载Msg2的下行载波上公共搜索空间的最大重复次数相关；或者，该第三信息可以指示该承载Msg2的下行载波和第三下行载波的信道质量与承载该第一信息的下行信道的重复次数相关。
可选地，该第二下行载波为该第三载波，该第二参数包括该第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
由上述方法200的描述可知，对于每个下行载波上有不同的随机接入资源，终端设备可以根据覆盖等级确定合适的随机接入资源，例如，对于第三下行载波而言，第三下行载波上有多个随机接入资源，比如有三个覆盖等级，其中覆盖等级0、覆盖等级1和覆盖等级2对应的随机接入资源的公共搜索空间的最大重复次数分别为2，4和8，当该第三信息用于指示该第三下行载波的信道质量与该第二参数相关时，该第二参数可以取最大重复次数中的最大值8或者最小值2。
应理解，最大值或者最小值的选择可以是终端设备和网络设备提前约定的，也可以通过其他方式，本申请实施例对此并不作限定。
还应理解，该第二参数可以为该多个重复次数中的最大值或者最小值，也可以为其他值，本申请实施例并不限于此。
本申请实施例的测量信道质量的方法，终端设备上报通过Msg3上报下行载波的信道质量，网络设备根据所有终端设备上报的信道质量，确定每个载波的负载情况，比如根据统计数据，下行信道质量较好的载波负载较轻，下行信道质量较差的载波负载较重，有助于网络设备实现负载均衡，比如将负载较重的载波的部分业务分配到负载较轻的载波上。
本申请实施例中，终端设备上报信道质量的方式更加灵活，可以兼容不同能力的终端设备，比如有的终端设备不支持在随机接入过程中修改Msg3中RRC消息，这种类型终端设备可以选择通过Rmax上报，有的终端设备支持在随机接入过程中修改Msg3中RRC 消息，这种类型终端设备可以选择通过R上报(因为R需要在随机接入过程中获取)。
特别地，对于支持在随机接入过程中修改Msg3中RRC消息的终端设备，通过R上报信道质量，粒度更精细，上报信道质量更准确。
图7是本申请实施例提供的测量信道质量的方法400的示意性流程图，如图7所示，该方法400包括：
S410，网络设备向终端设备发送配置信息，该终端设备接收该网络设备发送的该配置信息，该配置信息用于配置下行载波集合。
可选地，该配置信息携带在系统消息中。
可选地，该系统消息为SIB22-NB或者其它系统消息。
可选地，该系统消息包括SIB2-NB和SIB22-NB。
具体而言，终端设备可以根据SIB2和SIB22中的配置，按照预设概率选择某个上行载波发送上行PRACH，并通过NRSRP和NRSRP阈值的比较，确定对应的覆盖等级，从确定在该上行载波的哪个NPRACH资源上发送Msg1，通过SIB2或者SIB22中的配置信息，确定被选择的上行PRACH资源对应的下行载波，并获知对应的NPDCCH common search space对应的Rmax。终端设备在随机接入过程的Msg2的NPDCCH和NPDSCH、以及调度Msg3重传的NPDCCH和Msg4的NPDCCH和NPDSCH均会在所述下行载波上发送。并且，终端设备还可以确定每个下行载波上用于随机接入的公共搜索空间的最大重复次数Rmax。
S420，该终端设备向该网络设备发送随机接入过程消息一Msg1，该网络设备接收该终端设备发送的该Msg1。
S430，该网络设备向该终端设备发送DCI，该DCI用于调度随机接入过程消息二Msg2。
具体而言，终端设备发送Msg1后，然后在对应下行载波的随机接入响应窗口(RAR window)内监听type2-PDCCH的公共搜索空间，如果检测到对应RA-RNTI加掩的NPDCCH时，终端设备会读取对应的NPDSCH，解析其中的Msg2是否包含其对应的随机接入前导码标识(random access preamble ID，RAPID)，如果有对应RAPID，则终端设备处理对应的RAR，并确定Msg3的发送资源和发送时间。这个过程中，终端设备通过读取NPDCCH信道承载的用于调度NPDSCH的DCI信息，可以获得对应NPDCCH的实际发送重复次数R。
S440，该网络设备向该终端设备发送Msg2，该终端设备接收该网络设备发送的Msg2。
可选地，该方法还包括：
该终端设备测量承载该Msg2的下行载波的信道质量；和/或
该终端设备测量承载第三下行载波的信道质量。
应理解，该第三下行载波的确定过程已经在方法300中进行了描述，为了简洁，在此不再赘述。
S450，该终端设备向该网络设备发送随机接入过程消息三Msg3，该网络设备接收该终端设备发送的该Msg3。
可选地，该终端设备在发送Msg3之前，向该网络设备发送该第三信息。
可选地，该终端设备在该Msg3中携带该第二信息和该第三信息。
应理解，该终端设备具体上报第二信息和该第三信息的方式已经在方法300中进行了描述，为了简洁，在此不再赘述。
S460，该网络设备根据该Msg3，确定终端设备上报的该第一下行载波的信道质量。
S470，该网络设备向该终端设备发送Msg4，该终端设备接收该网络设备发送的Msg4。
以上，结合图6和图7对本申请实施提供的测量信道质量的方法进行了详细地说明。以下，结合附图对本申请实施例提供的测量信道质量的装置做详细说明。
本申请实施例还提供用于实现以上任一种方法的装置。例如，提供一种装置，包括用以实现以上任一种方法中终端所执行的各个步骤的单元(或手段)。再如，还提供另一种装置，包括用以实现以上任一种方法中网络设备所执行的各个步骤的单元(或手段)。
图8示出了本申请实施例提供的测量信道质量的装置500的示意性框图，如图8所示，该测量信道质量的装置500可以包括收发单元510和处理单元520。
在一种可能的设计中，该测量信道质量的装置可以为上述方法300和方法400中的终端设备或者配置于终端设备中的芯片。
具体地，收发单元510，用于接收网络设备发送的配置信息，该配置信息用于配置下行载波集合；
处理单元520，用于确定该配置信息；
该收发单元510还用于接收该网络设备发送的第一信息，该第一信息用于调度随机接入过程消息二Msg2，该第一信息包括第一参数，该第一参数包括承载该第一信息的下行信道的重复次数；
该处理单元520还用于确定该第一参数；
该收发单元510还用于向该网络设备发送第二信息和第三信息，该第二信息包括用于指示第一下行载波的信道质量的信息，该第三信息用于指示该第一下行载波的信道质量与该第一参数相关，或者，该第三信息用于指示该第一下行载波的信道质量与第二参数相关，该第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，该下行载波集合包括该第二下行载波。
可选地，该第一下行载波包括承载该Msg2的下行载波。
可选地，该第二下行载波为承载该Msg2的下行载波。
可选地，该第一下行载波包括第三下行载波，其中，
该第三下行载波为一个或者多个载波中信道质量最好的下行载波，该一个或者多个载波由该终端设备从该下行载波集合中确定；或者，
该第三下行载波由该终端设备根据预设规则确定；或者，
该第三下行载波由该网络设备指示。
可选地，该第二下行载波为该第三载波，或者，该第二下行载波为承载该Msg2的下行载波。
可选地，该第二下行载波为该第三载波，该第二参数包括该第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
可选地，该收发单元510具体用于：
在向该网络设备发送随机接入过程消息三Msg3之前，向该网络设备发送该第三信息；
向该网络设备发送该Msg3，该Msg3包括该第二信息。
应理解，测量信道质量的装置500可对应于根据本申请实施例的测量信道质量的方法300和方法400中的终端设备，该测量信道质量的装置500可以包括用于执行测量信道质量的方法300和方法400中的终端设备执行的方法的单元。并且，该测量信道质量的装置500中的各单元和上述其他操作和/或功能分别为了实现测量信道质量的方法300和方法400的相应流程。各单元执行上述相应步骤的具体过程请参照前文中结合图6和图7的方法实施例的描述，为了简洁，这里不再赘述。
图9示出了本申请实施例提供的测量信道质量的装置600的示意性框图，如图9所示，该测量信道质量的装置600可以包括处理单元610和收发单元620。
在一种可能的设计中，该测量信道质量的装置可以为上述方法300和方法400中的网络设备或者配置于网络设备中的芯片。
处理单元610，用于确定配置信息，该配置信息用于配置下行载波集合；
收发单元620，用于向终端设备发送该配置信息；
该处理单元610还用于确定第一信息，该第一信息用于调度随机接入过程消息二Msg2，该第一信息包括第一参数，该第一参数包括承载该第一信息的下行信道的重复次数；
该收发单元620还用于向该终端设备发送该第一信息；
该收发单元620还用于接收该终端设备发送第二信息和第三信息，该第二信息包括用于指示第一下行载波的信道质量的信息，该第三信息用于指示该第一下行载波的信道质量与该第一参数相关，或者，该第三信息用于指示该第一下行载波的信道质量与第二参数相关，该第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，该下行载波集合包括该第二下行载波。
可选地，该第一下行载波包括承载该Msg2的下行载波。
可选地，该第二下行载波为承载该Msg2的下行载波。
可选地，该第一下行载波包括第三下行载波，其中，
该第三下行载波为一个或者多个载波中信道质量最好的下行载波，该一个或者多个载波由该终端设备从该下行载波集合中确定；或者，
该第三下行载波由该终端设备根据预设规则确定；或者，
该第三下行载波由该网络设备指示。
可选地，该第二下行载波为该第三载波，或者，该第二下行载波为承载该Msg2的下行载波。
可选地，该第二下行载波为该第三载波，该第二参数包括该第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
应理解，测量信道质量的装置600可对应于根据本申请实施例的测量信道质量的方法300和方法400中的网络设备，该测量信道质量的装置600可以包括用于执行测量信道质量的方法300和方法400的网络设备执行的方法的单元。并且，该测量信道质量的装置600中的各单元和上述其他操作和/或功能分别为了实现测量信道质量的方法300和方法400的相应流程。各单元执行上述相应步骤的具体过程请参照前文中结合图6和图7的方法实施例的描述，为了简洁，这里不再赘述。
图10示出了本申请实施例提供的终端设备的结构示意图，其可以为以上实施例中的 终端设备，用于实现以上实施例中终端设备的操作。如图10所示，该终端设备包括：天线710、射频部分720、信号处理部分730。天线710与射频部分720连接。在下行方向上，射频部分720通过天线710接收网络设备发送的信息，将网络设备发送的信息发送给信号处理部分730进行处理。在上行方向上，信号处理部分730对终端的信息进行处理，并发送给射频部分720，射频部分720对终端设备的信息进行处理后经过天线710发送给网络设备。
信号处理部分730可以包括调制解调子系统，用于实现对数据各通信协议层的处理；还可以包括中央处理子系统，用于实现对终端操作系统以及应用层的处理；此外，还可以包括其它子系统，例如多媒体子系统，周边子系统等，其中多媒体子系统用于实现对终端设备相机，屏幕显示等的控制，周边子系统用于实现与其它设备的连接。调制解调子系统可以为单独设置的芯片。可选的，以上用于终端的装置可以位于该调制解调子系统。
调制解调子系统可以包括一个或多个处理元件731，例如，包括一个主控CPU和其它集成电路。此外，该调制解调子系统还可以包括存储元件732和接口电路733。存储元件732用于存储数据和程序，但用于执行以上方法中终端所执行的方法的程序可能不存储于该存储元件732中，而是存储于调制解调子系统之外的存储器中，使用时调制解调子系统加载使用。接口电路733用于与其它子系统通信。以上用于终端的装置可以位于调制解调子系统，该调制解调子系统可以通过芯片实现，该芯片包括至少一个处理元件和接口电路，其中处理元件用于执行以上终端设备执行的任一种方法的各个步骤，接口电路用于与其它装置通信。在一种实现中，终端设备实现以上方法中各个步骤的单元可以通过处理元件调度程序的形式实现，例如用于终端设备的装置包括处理元件和存储元件，处理元件调用存储元件存储的程序，以执行以上方法实施例中终端设备执行的方法。存储元件可以为处理元件处于同一芯片上的存储元件，即片内存储元件。
在另一种实现中，用于执行以上方法中终端设备所执行的方法的程序可以在与处理元件处于不同芯片上的存储元件，即片外存储元件。此时，处理元件从片外存储元件调用或加载程序于片内存储元件上，以调用并执行以上方法实施例中终端执行的方法。
在又一种实现中，终端实现以上方法中各个步骤的单元可以是被配置成一个或多个处理元件，这些处理元件设置于调制解调子系统上，这里的处理元件可以为集成电路，例如：一个或多个专用集成电路(application specific integrated circuit，ASIC)，或，一个或多个数字信号处理器(digital signal processor，DSP)，或，一个或者多个现成可编程门阵列(field programmable gate array，FPGA)，或者这些类集成电路的组合。这些集成电路可以集成在一起，构成芯片。
终端实现以上方法中各个步骤的单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现，该SOC芯片，用于实现以上方法。该芯片内可以集成至少一个处理元件和存储元件，由处理元件调用存储元件的存储的程序的形式实现以上终端执行的方法；或者，该芯片内可以集成至少一个集成电路，用于实现以上终端执行的方法；或者，可以结合以上实现方式，部分单元的功能通过处理元件调用程序的形式实现，部分单元的功能通过集成电路的形式实现。
可见，以上用于终端设备的装置可以包括至少一个处理元件和接口电路，其中至少一个处理元件用于执行以上方法实施例所提供的任一种终端设备执行的方法。处理元件可以 以第一种方式：即调用存储元件存储的程序的方式执行终端执行的部分或全部步骤；也可以以第二种方式：即通过处理器元件中的硬件的集成逻辑电路结合指令的方式执行终端设备执行的部分或全部步骤；当然，也可以结合第一种方式和第二种方式执行终端执行的部分或全部步骤。
这里的处理元件同以上描述，可以是通用处理器，例如CPU，还可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个ASIC，或，一个或多个微处理器DSP，或，一个或者多个FPGA等，或这些集成电路形式中至少两种的组合。
存储元件可以是一个存储器，也可以是多个存储元件的统称。
图11示出了本申请实施例提供的网络设备的结构示意图，其可以为上述实施例中的网络设备，用于实现以上实施例中网络设备的操作。如11所示，该网络设备包括：天线801、射频装置802、基带装置803。天线801与射频装置802连接。在上行方向上，射频装置802通过天线801接收终端设备发送的信息，将终端设备发送的信息发送给基带装置803进行处理。在下行方向上，基带装置803对终端的信息进行处理，并发送给射频装置802，射频装置802对终端设备的信息进行处理后经过天线801发送给终端。
基带装置803可以包括一个或多个处理元件8031，例如，包括一个主控CPU和其它集成电路。此外，该基带装置803还可以包括存储元件8032和接口8033，存储元件8032用于存储程序和数据；接口8033用于与射频装置802交互信息，该接口例如为通用公共无线接口(common public radio interface，CPRI)。以上用于网络设备的装置可以位于基带装置803，例如，以上用于网络设备的装置可以为基带装置803上的芯片，该芯片包括至少一个处理元件和接口电路，其中处理元件用于执行以上网络设备执行的任一种方法的各个步骤，接口电路用于与其它装置通信。在一种实现中，网络设备实现以上方法中各个步骤的单元可以通过处理元件调度程序的形式实现，例如用于网络设备的装置包括处理元件和存储元件，处理元件调用存储元件存储的程序，以执行以上方法实施例中网络设备执行的方法。存储元件可以为处理元件处于同一芯片上的存储元件，即片内存储元件，也可以为与处理元件处于不同芯片上的存储元件，即片外存储元件。
在另一种实现中，网络设备实现以上方法中各个步骤的单元可以是被配置成一个或多个处理元件，这些处理元件设置于基带装置上，这里的处理元件可以为集成电路，例如：一个或多个ASIC，或，一个或多个DSP，或，一个或者多个FPGA，或者这些类集成电路的组合。这些集成电路可以集成在一起，构成芯片。
网络设备实现以上方法中各个步骤的单元可以集成在一起，以SOC的形式实现，例如，基带装置包括该SOC芯片，用于实现以上方法。该芯片内可以集成至少一个处理元件和存储元件，由处理元件调用存储元件的存储的程序的形式实现以上网络设备执行的方法；或者，该芯片内可以集成至少一个集成电路，用于实现以上网络设备执行的方法；或者，可以结合以上实现方式，部分单元的功能通过处理元件调用程序的形式实现，部分单元的功能通过集成电路的形式实现。
可见，以上用于网络设备的装置可以包括至少一个处理元件和接口电路，其中至少一个处理元件用于执行以上方法实施例所提供的任一种网络设备执行的方法。处理元件可以以第一种方式：即调用存储元件存储的程序的方式执行网络设备执行的部分或全部步骤；也可以以第二种方式：即通过处理器元件中的硬件的集成逻辑电路结合指令的方式执行网 络设备执行的部分或全部步骤；当然，也可以结合第一种方式和第二种方式执行以上网络设备执行的部分或全部步骤。
上述各个装置实施例中的终端设备与网络设备可以与方法实施例中的终端设备或者网络设备完全对应，由相应的模块或者单元执行相应的步骤，例如，当该装置以芯片的方式实现时，该接收单元可以是该芯片用于从其他芯片或者装置接收信号的接口电路。以上用于发送的单元是一种该装置的接口电路，用于向其他装置发送信号，例如，当该装置以芯片的方式实现时，该发送单元是该芯片用于向其他芯片或者装置发送信号的接口电路。
本申请实施例还提供了一种通信系统，该通信系统包括：上述终端设备，和/或，上述网络设备。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行上述实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行上述实施例中的方法。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置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。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(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申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种测量信道质量的方法，其特征在于，包括：
    终端设备接收网络设备发送的配置信息，所述配置信息用于配置下行载波集合；
    所述终端设备接收所述网络设备发送的第一信息，所述第一信息用于调度随机接入过程消息二Msg2，所述第一信息包括第一参数，所述第一参数包括承载所述第一信息的下行信道的重复次数；
    所述终端设备向所述网络设备发送第二信息和第三信息，所述第二信息包括用于指示第一下行载波的信道质量的信息，所述第三信息用于指示所述第一下行载波的信道质量与所述第一参数相关，或者，所述第三信息用于指示所述第一下行载波的信道质量与第二参数相关，所述第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，所述下行载波集合包括所述第二下行载波。
  2. 根据权利要求1所述的方法，其特征在于，所述第一下行载波包括承载所述Msg2的下行载波。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第二下行载波为承载所述Msg2的下行载波。
  4. 根据权利要求1或2所述的方法，其特征在于，所述第一下行载波包括第三下行载波，其中，
    所述第三下行载波为一个或者多个载波中信道质量最好的下行载波，所述一个或者多个载波由所述终端设备从所述下行载波集合中确定；或者，
    所述第三下行载波由所述终端设备根据预设规则确定；或者，
    所述第三下行载波由所述网络设备指示。
  5. 根据权利要求4所述的方法，其特征在于，所述第二下行载波为所述第三载波，或者，所述第二下行载波为承载所述Msg2的下行载波。
  6. 根据权利要求5所述的方法，其特征在于，所述第二下行载波为所述第三载波，所述第二参数包括所述第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述终端设备向所述网络设备发送第二信息和第三信息，包括：
    所述终端设备在向所述网络设备发送随机接入过程消息三Msg3之前，向所述网络设备发送所述第三信息；
    所述终端设备向所述网络设备发送所述Msg3，所述Msg3包括所述第二信息。
  8. 一种测量信道质量的方法，其特征在于，包括：
    网络设备向终端设备发送配置信息，所述配置信息用于配置下行载波集合；
    所述网络设备向所述终端设备发送第一信息，所述第一信息用于调度随机接入过程消息二Msg2，所述第一信息包括第一参数，所述第一参数包括承载所述第一信息的下行信道的重复次数；
    所述网络设备接收所述终端设备发送第二信息和第三信息，所述第二信息包括用于指 示第一下行载波的信道质量的信息，所述第三信息用于指示所述第一下行载波的信道质量与所述第一参数相关，或者，所述第三信息用于指示所述第一下行载波的信道质量与第二参数相关，所述第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，所述下行载波集合包括所述第二下行载波。
  9. 根据权利要求8所述的方法，其特征在于，所述第一下行载波包括承载所述Msg2的下行载波。
  10. 根据权利要求8或9所述的方法，其特征在于，所述第二下行载波为承载所述Msg2的下行载波。
  11. 根据权利要求8或9所述的方法，其特征在于，所述第一下行载波包括第三下行载波，其中，
    所述第三下行载波为一个或者多个载波中信道质量最好的下行载波，所述一个或者多个载波由所述终端设备从所述下行载波集合中确定；或者，
    所述第三下行载波由所述终端设备根据预设规则确定；或者，
    所述第三下行载波由所述网络设备指示。
  12. 根据权利要求11所述的方法，其特征在于，所述第二下行载波为所述第三载波，或者，所述第二下行载波为承载所述Msg2的下行载波。
  13. 根据权利要求12所述的方法，其特征在于，所述第二下行载波为所述第三载波，所述第二参数包括所述第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
  14. 一种测量信道质量的装置，其特征在于，包括：
    收发单元，用于接收网络设备发送的配置信息，所述配置信息用于配置下行载波集合；
    处理单元，用于确定所述配置信息；
    所述收发单元还用于接收所述网络设备发送的第一信息，所述第一信息用于调度随机接入过程消息二Msg2，所述第一信息包括第一参数，所述第一参数包括承载所述第一信息的下行信道的重复次数；
    所述处理单元还用于确定所述第一参数；
    所述收发单元还用于向所述网络设备发送第二信息和第三信息，所述第二信息包括用于指示第一下行载波的信道质量的信息，所述第三信息用于指示所述第一下行载波的信道质量与所述第一参数相关，或者，所述第三信息用于指示所述第一下行载波的信道质量与第二参数相关，所述第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，所述下行载波集合包括所述第二下行载波。
  15. 根据权利要求14所述的装置，其特征在于，所述第一下行载波包括承载所述Msg2的下行载波。
  16. 根据权利要求14或15所述的装置，其特征在于，所述第二下行载波为承载所述Msg2的下行载波。
  17. 根据权利要求14或15所述的装置，其特征在于，所述第一下行载波包括第三下行载波，其中，
    所述第三下行载波为一个或者多个载波中信道质量最好的下行载波，所述一个或者多个载波由所述终端设备从所述下行载波集合中确定；或者，
    所述第三下行载波由所述终端设备根据预设规则确定；或者，
    所述第三下行载波由所述网络设备指示。
  18. 根据权利要求17所述的装置，其特征在于，所述第二下行载波为所述第三载波，或者，所述第二下行载波为承载所述Msg2的下行载波。
  19. 根据权利要求18所述的装置，其特征在于，所述第二下行载波为所述第三载波，所述第二参数包括所述第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
  20. 根据权利要求14至19中任一项所述的装置，其特征在于，所述收发单元具体用于：
    在向所述网络设备发送随机接入过程消息三Msg3之前，向所述网络设备发送所述第三信息；
    向所述网络设备发送所述Msg3，所述Msg3包括所述第二信息。
  21. 一种测量信道质量的装置，其特征在于，包括：
    处理单元，用于确定配置信息，所述配置信息用于配置下行载波集合；
    收发单元，用于向终端设备发送所述配置信息；
    所述处理单元还用于确定第一信息，所述第一信息用于调度随机接入过程消息二Msg2，所述第一信息包括第一参数，所述第一参数包括承载所述第一信息的下行信道的重复次数；
    所述收发单元还用于向所述终端设备发送所述第一信息；
    所述收发单元还用于接收所述终端设备发送第二信息和第三信息，所述第二信息包括用于指示第一下行载波的信道质量的信息，所述第三信息用于指示所述第一下行载波的信道质量与所述第一参数相关，或者，所述第三信息用于指示所述第一下行载波的信道质量与第二参数相关，所述第二参数包括第二下行载波上用于随机接入的公共搜索空间的最大重复次数，所述下行载波集合包括所述第二下行载波。
  22. 根据权利要求21所述的装置，其特征在于，所述第一下行载波包括承载所述Msg2的下行载波。
  23. 根据权利要求21或22所述的装置，其特征在于，所述第二下行载波为承载所述Msg2的下行载波。
  24. 根据权利要求21或22所述的装置，其特征在于，所述第一下行载波包括第三下行载波，其中，
    所述第三下行载波为一个或者多个载波中信道质量最好的下行载波，所述一个或者多个载波由所述终端设备从所述下行载波集合中确定；或者，
    所述第三下行载波由所述终端设备根据预设规则确定；或者，
    所述第三下行载波由所述网络设备指示。
  25. 根据权利要求24所述的装置，其特征在于，所述第二下行载波为所述第三载波，或者，所述第二下行载波为承载所述Msg2的下行载波。
  26. 根据权利要求25所述的装置，其特征在于，所述第二下行载波为所述第三载波，所述第二参数包括所述第二下行载波上用于随机接入的公共搜索空间的最大重复次数的最大值或者最小值。
  27. 一种测量信道质量的装置，其特征在于，包括至少一个处理器和接口电路，所述至少一个处理器用于执行如权利要求1-7中任一项所述的方法。
  28. 一种测量信道质量的装置，其特征在于，包括至少一个处理器和接口电路，所述至少一个处理器用于执行如权利要求8-13中任一项所述的方法。
  29. 一种终端设备，其特征在于，包括如权利要求14-20中任一项所述的装置，或者，包括如权利要求27所述的装置。
  30. 一种计算机可读存储介质，其上存储有指令，当所述指令在计算机上运行时，使得所述计算机执行权利要求1至13中任一项所述的方法。
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