WO2019096020A1 - 通信的方法、通信装置和系统 - Google Patents

通信的方法、通信装置和系统 Download PDF

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Publication number
WO2019096020A1
WO2019096020A1 PCT/CN2018/113937 CN2018113937W WO2019096020A1 WO 2019096020 A1 WO2019096020 A1 WO 2019096020A1 CN 2018113937 W CN2018113937 W CN 2018113937W WO 2019096020 A1 WO2019096020 A1 WO 2019096020A1
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WIPO (PCT)
Prior art keywords
cell
terminal device
parameter
sul
sul transmission
Prior art date
Application number
PCT/CN2018/113937
Other languages
English (en)
French (fr)
Inventor
张宏平
彭文杰
戴明增
赵旸
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.)
Filing date
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 RU2020119586A priority Critical patent/RU2770652C2/ru
Priority to CA3084559A priority patent/CA3084559C/en
Priority to EP18879835.9A priority patent/EP3709710B1/en
Priority to JP2020526906A priority patent/JP6980916B2/ja
Priority to KR1020207016166A priority patent/KR102315179B1/ko
Priority to BR112020009807-8A priority patent/BR112020009807A2/pt
Publication of WO2019096020A1 publication Critical patent/WO2019096020A1/zh
Priority to US16/875,243 priority patent/US11317336B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/30Reselection being triggered by specific parameters by measured or perceived connection quality data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communications and, more particularly, to methods, communication devices and systems for communication.
  • the upstream and downstream frequencies are the same or similar.
  • the base station's transmit power is basically unlimited, but the terminal device is limited by factors such as battery and cost, and the transmit power is limited.
  • the base station may use a larger transmit power transmission to improve the downlink coverage, but the terminal device may be limited by the maximum transmit power and the like, and the uplink coverage may not be improved by the same method of downlink (ie, increasing the transmit power).
  • the coverage of the uplink and downlink is inconsistent.
  • a new technology is that the cell can have an additional lower frequency uplink band in addition to the original one. We call it Supplemental Uplink (SUL), and the terminal device can send uplink through SUL. , thereby improving the uplink coverage.
  • SUL Supplemental Uplink
  • some terminal devices support SUL for uplink transmission
  • some terminal devices do not support SUL for uplink transmission. Therefore, when the terminal device performs cell selection or cell reselection, it is necessary to consider both the terminal device supporting the SUL transmission and the terminal device not supporting the SUL transmission, thereby avoiding the cell selection or cell reselection of the terminal device that is too early or too late, and reducing the system. performance.
  • the present application provides a method, communication device and system for communication, which can avoid cell selection or cell reselection of a terminal device that is too early or too late.
  • a method for communication comprising: receiving, by a terminal device, broadcast information, the broadcast information comprising a first parameter and a second parameter for a first cell, wherein the first parameter is used to support supplemental uplink carrier Cell selection or cell reselection performed by the terminal device transmitted by the SUL, the second parameter is used for cell selection or cell reselection by the terminal device that does not support SUL transmission; when the terminal device supports SUL transmission, the terminal device is based on the The first parameter performs cell selection or cell reselection, or when the terminal device does not support SUL transmission, the terminal device performs cell selection or cell reselection based on the second parameter.
  • the first parameter and the second parameter for the first cell are used by the broadcast information, wherein the first parameter is used for cell selection or cell performed by the terminal device supporting the supplementary uplink carrier SUL transmission.
  • the second parameter is used for cell selection or cell reselection by a terminal device that does not support SUL transmission, such that when the terminal device supports SUL transmission, the terminal device performs cell selection or cell reselection based on the first parameter, when When the terminal device does not support the SUL transmission, the terminal device performs cell selection or cell reselection based on the second parameter, so that both the terminal device supporting the SUL transmission and the terminal device not supporting the SUL transmission can be considered, and the terminal device is prevented from being too early or too late. Cell selection or cell reselection to improve system performance.
  • the first parameter is used to determine a minimum reception level required by the first cell for the terminal device supporting the SUL transmission
  • the second parameter is used to determine whether the first cell is not The minimum reception level required by the terminal device supporting SUL transmission.
  • the first parameter is used to indicate a minimum reception level value required by the first cell for the terminal device supporting the SUL transmission
  • the second parameter is used to indicate the first cell pair The minimum reception level value required by the terminal device that does not support the SUL transmission; or the first parameter is used to indicate the minimum reception level value required by the first cell for the terminal device that does not support the SUL transmission and the first cell to support the SUL transmission.
  • the second parameter is used to indicate the minimum receiving level value required by the first cell for the terminal device that does not support the SUL transmission; or the first parameter is used to indicate the first The minimum reception level value required by the cell for the terminal device supporting the SUL transmission, and the second parameter is used to indicate the minimum reception level value required by the first cell to the terminal device that does not support the SUL transmission and the terminal that supports the SUL transmission by the first cell.
  • the minimum receiving level required by the first cell may enable the terminal device of different capabilities.
  • the method or standard of judgment is different, so that terminal devices of different capabilities can be taken into consideration, and cell selection or cell reselection of the terminal device is prevented from being too early or too late, thereby improving system performance.
  • the terminal device when the terminal device supports the SUL transmission, the terminal device performs cell selection or cell reselection based on the first parameter, where the terminal device calculates the first cell according to the first parameter.
  • the cell selects the receiving level value, and the terminal device performs cell selection or cell reselection based on the level value;
  • the terminal device when the terminal device does not support the SUL transmission, the terminal device performs cell selection or cell reselection based on the second parameter, including: the terminal device
  • the cell selection reception level value of the first cell is calculated according to the second parameter, and the terminal device performs cell selection or cell reselection based on the level value.
  • the terminal equipments of different capabilities when performing cell selection or cell reselection, perform cell selection or cell reselection according to different level values, thereby enabling the terminal devices of different capabilities to be balanced. Avoid cell selection or cell reselection of terminal devices too early or too late to improve system performance.
  • the first cell is a serving cell or a neighboring cell of the terminal device.
  • the value of the first parameter is less than the value of the second parameter.
  • the terminal device after determining that the broadcast information includes the first parameter and the second parameter for the first cell, determines that the frequency band used by the first cell includes the SUL frequency band.
  • the terminal device determines that the frequency band used by the first cell includes the SUL frequency band by determining that the first parameter and the second parameter are included in the broadcast information, and does not need special indication information, thereby saving the letter. Make the cost.
  • the signal strength value of the receiving the first cell is measured; when the first cell is a serving cell of the terminal device, and the terminal device supports the SUL transmission, the method includes: when receiving the signal When the strength value is less than the preset threshold, the terminal device initiates a random access procedure by using the SUL frequency band of the first cell when initiating the initial access; or when the received signal strength value is not less than the preset threshold, the terminal device initiates the initial The random access procedure is initiated by the primary uplink frequency band of the first cell during access.
  • the terminal device determines that the uplink frequency band is initiated by determining the signal strength value of the first cell and the preset threshold, so that the terminal device can initiate random access. The success rate of the process.
  • the terminal device initiates a random access process by using a primary uplink frequency band, including: the number of times the terminal device fails to initiate a random access procedure through the primary uplink frequency band is greater than a preset first At the threshold, the terminal device initiates a random access procedure through the SUL frequency band.
  • the terminal device can improve the success rate of the terminal device initiating the random access process by determining whether the number of times the terminal device fails to initiate the random access process through the primary uplink frequency band exceeds a preset first threshold. .
  • a method for communication comprising: the network device transmitting broadcast information, the broadcast information including a first parameter and a second parameter for the first cell, wherein the first parameter is used to support the supplemental uplink carrier
  • the first parameter and the second parameter for the first cell are used by the broadcast information, wherein the first parameter is used for cell selection or cell performed by the terminal device supporting the supplementary uplink carrier SUL transmission.
  • the second parameter is used for cell selection or cell reselection by a terminal device that does not support SUL transmission, thereby being able to balance both a terminal device supporting SUL transmission and a terminal device not supporting SUL transmission, and avoiding premature terminal device or Late cell selection or cell reselection improves system performance.
  • the first parameter is used to determine a minimum reception level required by the first cell for the terminal device supporting the SUL transmission, and the second parameter is used to determine that the SUL transmission is not supported.
  • the first parameter is used to indicate a minimum reception level value required by the first cell for the terminal device supporting the SUL transmission
  • the second parameter is used to indicate the first cell pair The minimum reception level value required by the terminal device that does not support the SUL transmission; or the first parameter is used to indicate the minimum reception level value required by the first cell for the terminal device that does not support the SUL transmission and the first cell to support the SUL transmission.
  • the second parameter is used to indicate the minimum receiving level value required by the first cell for the terminal device that does not support the SUL transmission; or the first parameter is used to indicate the first a minimum reception level value required by the cell for the terminal device supporting the SUL transmission, the second parameter is used to indicate that the first cell requires a minimum reception level value for the terminal device that does not support the SUL transmission, and the first cell pair supports the SUL transmission.
  • the minimum receiving level required by the first cell for the terminal devices of different capabilities is determined by the first parameter or the second parameter, so that the terminal devices of different capabilities can perform cell selection or cell reselection.
  • the terminal equipment of different capabilities can be taken into consideration, and the cell selection or cell reselection of the terminal equipment is prevented from being too early or too late, thereby improving system performance.
  • the first cell is a serving cell or a neighboring cell of the terminal device.
  • the value of the first parameter is less than the value of the second parameter.
  • the second aspect after determining that the broadcast information sent by the network device includes the first parameter and the second parameter of the first cell, determining that the frequency band used by the first cell includes a SUL frequency band.
  • the communication method of the embodiment of the present application by determining that the first parameter and the second parameter are included in the broadcast information, it may be determined that the frequency band used by the first cell includes the SUL frequency band, and no special indication information is needed, which may save signaling overhead. .
  • a terminal device in a third aspect, has a function of realizing the behavior of the terminal device in the above method aspect, and includes means for performing the steps or functions described in the above method aspect.
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the above apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus to perform the respective functions of the methods described above. For example, cell selection or cell reselection is performed according to parameters.
  • the communication unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, receiving broadcast information.
  • the apparatus may further comprise one or more memories for coupling with the processor, which store program instructions and/or data necessary for the device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the device may be a smart terminal or a wearable device or the like, and the communication unit may be a transceiver or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above terminal device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the terminal device performs any of the first aspect or the first aspect The method in which the terminal device is completed in the mode.
  • a network device in a fourth aspect, has a function of implementing the behavior of the network device in the above method aspect, and includes means for performing the steps or functions described in the above method aspect.
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the network device described above includes one or more processors and communication units.
  • the one or more processors are configured to support the network device to perform corresponding functions in the above methods. For example, determining the broadcast information includes a first parameter and a second parameter.
  • the communication unit is configured to support the network device to communicate with other devices to implement receiving and/or transmitting functions. For example, send broadcast information.
  • the network device may further include one or more memories for coupling with the processor, which save program instructions and/or data necessary for the network device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the network device may be a base station, a gNB or a TRP, etc.
  • the communication unit may be a transceiver, or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the network device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above network device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the network device performs any of the second aspect or the second aspect The method of completing the network device in the mode.
  • a system comprising the above terminal device and a network device.
  • a sixth aspect a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or the possible implementation of any of the first aspects.
  • a seventh aspect a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of any of the possible implementations of the second aspect or the second aspect.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform any of the first aspect or the first aspect described above Possible methods in the implementation.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform any of the second aspect and the second aspect Possible methods in the implementation.
  • FIG. 1 is a schematic diagram of a SUL cell applicable to an embodiment of the present application.
  • FIG. 2 is a schematic block diagram of a method for communication provided by an embodiment of the present application.
  • FIG. 3 is another schematic interaction diagram of a method for communication provided by an embodiment of the present application.
  • FIG. 4 is still another schematic interaction diagram of a method for communication provided by an embodiment of the present application.
  • FIG. 5 is still another schematic block diagram of a method for communication provided by an embodiment of the present application.
  • FIG. 6 is a schematic interaction diagram of a method for communication provided by another embodiment of the present application.
  • FIG. 7 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or User device.
  • the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA).
  • Base Transceiver Station which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in an LTE system (Evolutional The NodeB, eNB or eNodeB) may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future.
  • the network device in the 5G network or the network device in the PLMN network in the future is not limited in this embodiment.
  • the embodiment of the present application provides a method for communication, which may be applied to cell selection or cell reselection.
  • the terminal device when the terminal device is powered on or a radio link fails, the terminal device performs a cell search process and selects a suitable cell to camp as soon as possible. This process is called "cell selection.”
  • the terminal device reads the system information of the cell in the cell search process, and obtains parameters such as Qrxlevmeas, Qrxlevmin, and Qrxlevminoffset, and the terminal device evaluates whether the cell is a suitable cell according to the S criterion, and once the suitable cell is found, that is, S is satisfied. For the cell of the criterion, the cell selection process is completed. If the cell is not a suitable cell, the terminal device continues to search until a suitable cell is found and camps on.
  • Srxlev calculated cell selection reception level value
  • Qrxlevmeas the received signal strength value measured by the terminal device, and the value is the measured reference signal receiving power (RSRP);
  • Qrxlevmin the minimum received signal strength value required by the cell
  • Pcompensation (PEMAX–PUMAX) or a larger value of 0, where PEMAX is the maximum allowed transmit power set by the system when the terminal device accesses the cell; PUMAX refers to the maximum output power specified according to the terminal device level.
  • QrxlevminOffset This parameter only periodically resides in a Virtual Private Mobile Network (VPMN), and periodically searches for a high-priority Public Land Mobile Network (PLMN) for cell selection evaluation. Only valid, this parameter gives a certain offset to Qrxlevmin.
  • VPMN Virtual Private Mobile Network
  • PLMN Public Land Mobile Network
  • the terminal device may need to change to another higher priority or better signal cell camping, which is the cell reselection process.
  • Cell selection is the process of finding a suitable cell as soon as possible.
  • Cell reselection is the process of selecting a more suitable cell.
  • the agreement specifies the measurement criteria:
  • the terminal device For a frequency layer or system with a higher priority than the camped cell, the terminal device always measures it;
  • the terminal device initiates measurement of the same-frequency cell, where Sintrasearch is the same-frequency measurement threshold;
  • the terminal device initiates measurement of the same priority frequency or low priority frequency and system;
  • the terminal device determines whether to perform cell reselection to the new cell, and the reselection criteria are as follows:
  • High priority frequency or system reselection criteria Srxlev>Threshx-high of the target frequency cell for a certain period of time, where Threshx-high refers to the gate when reselecting from the current serving carrier frequency to a higher priority frequency Limit value
  • Low priority frequency or system reselection criteria Srxlev ⁇ Threshserving-low of the camping cell for a certain period of time, where Threshx-low refers to the gate when reselecting from the current serving carrier frequency to a lower priority frequency Limit value
  • Same priority frequency or system reselection criteria cell reselection to the same priority frequency in the cell based on the same frequency cell reselection level (Ranking) standard.
  • the same frequency cell reselection Ranking standard is defined as follows, R s is the ranking value of the current camping cell, and R n is the ranking value of the neighboring cell:
  • Qhyst hysteresis value used to prevent ping pong reselection
  • Qmeas_s the received signal strength value of the camped cell measured by the terminal device
  • Qoffset For the same frequency, the value is Qoffsets_n, Qoffsets_n is the difference between the received signal quality requirements of the two cells; for the different frequency, the value is Qoffsets_n+Qoffsetfrequency, and Qoffsetfrequency is the frequency offset value between the two frequency points.
  • the terminal equipment ranks the ranking values of all the cells satisfying the cell selection S criterion, and reselects the cells with the best ranking.
  • the cell can have an additional lower frequency uplink band, that is, Supplemental Uplink (SUL).
  • SUL Supplemental Uplink
  • the terminal device can send the uplink through the additional uplink frequency band, thereby improving the uplink coverage, so that the uplink and downlink coverage are consistent.
  • the frequency band used by the cell includes the SUL frequency band
  • the cell is referred to as a SUL cell
  • other cells are referred to as common cells.
  • the SUL cell includes a SUL band and an uplink (UL) band
  • the UL band is a normal uplink band
  • the SUL band and the UL band are different.
  • Figure 1 shows a schematic diagram of a SUL cell.
  • the uplink coverage in the SUL cell includes the UL frequency band and the SUL frequency band, and the UL uplink frequency band can only cover the area 1 and the SUL frequency band can also cover the area 2. It can be seen that in the SUL cell, due to the introduction of the SUL frequency band, the downlink (DL) coverage and the uplink coverage of the cell are almost the same.
  • some terminal devices support SUL transmission, and some terminal devices do not support SUL transmission.
  • the terminal device In the SUL cell, for the terminal device supporting the SUL transmission, when located in the area 2, the terminal device can only initiate the random access procedure through the SUL frequency band; for the terminal device that does not support the SUL transmission, the uplink transmission can only be performed through the UL frequency band.
  • terminal device that does not support SUL transmission includes a SUL frequency band in which the terminal device does not support the SUL feature, or supports the SUL feature but does not support the SUL cell.
  • the impact of the SUL band on the cell selection or reselection mechanism is not considered. If the current cell selection or reselection mechanism is continued, the terminal device supporting the SUL transmission and the terminal device not supporting the SUL transmission cannot be considered, resulting in the terminal.
  • the device is re-selected prematurely or re-elected too late to reduce system performance. For example, when a terminal device that does not support SUL transmission performs cell reselection in the foregoing manner, it may reselect to the SUL cell. When the terminal device that does not support SUL transmission is in the area 2 of the SUL cell, the initial access cannot be successfully initiated. This is the consequence of premature reselection of the terminal equipment, which will degrade system performance.
  • the embodiment of the present application proposes a communication method, which can be applied to cell selection or cell reselection, to avoid or reduce premature or late reselection of the terminal device.
  • FIG. 2 is a schematic diagram of a method of communication according to an embodiment of the present application.
  • the terminal device receives broadcast information, where the broadcast information includes a first parameter and a second parameter for the first cell, where the first parameter is used to support cell selection or cell reselection performed by the terminal device that supplements the uplink carrier SUL transmission.
  • the second parameter is used for cell selection or cell reselection by a terminal device that does not support SUL transmission.
  • a terminal device capable of supporting SUL transmission and a terminal device capable of supporting SUL transmission perform cell selection or cell reselection based on different parameters, thereby avoiding premature selection or reselection of the terminal device, or selecting or weighting too late selected.
  • the terminal device receives broadcast information in a process of performing cell selection or cell reselection, where the broadcast information includes a first parameter and a second parameter for the first cell, and is used to determine whether to select to camp in the first cell. Whether a cell is reselected to the first cell or reselected from the first cell to another cell, where the first cell may be a serving cell of the terminal device or a neighboring cell of the terminal device.
  • the broadcast information may be used multiple times, for example, the first parameter and the second parameter for the first cell included in the broadcast information, then the entire cell selection or cell reselection of the terminal device In the process, or in the process of multiple cell reselection judgments, the first parameter and the second parameter may be used multiple times.
  • the first parameter is used to determine a minimum receiving level value required by the first cell for the terminal device supporting the SUL transmission
  • the second parameter is used to determine the minimum receiving power required by the first cell for the terminal device that does not support the SUL transmission.
  • the first parameter is used to indicate a minimum receiving level value required by the first cell to the terminal device supporting the SUL transmission
  • the second parameter is used to indicate the minimum receiving power required by the first cell to the terminal device that does not support the SUL transmission.
  • the minimum reception level value required by the first cell for the terminal device that does not support the SUL transmission is equal to the sum of the first parameter and the second parameter.
  • the first parameter is used to indicate a difference between a minimum reception level value required by the first cell for the terminal device that does not support the SUL transmission and a minimum reception level value that the first cell requires for the terminal device that supports the SUL transmission.
  • the second parameter is used to indicate a minimum reception level value required by the first cell for a terminal device that does not support SUL transmission. At this time, the minimum reception level value required by the first cell for the terminal device supporting the SUL transmission is equal to the difference between the second parameter and the first parameter.
  • the terminal device When the terminal device supports SUL transmission, the terminal device performs cell selection or cell reselection based on the first parameter, or when the terminal device does not support SUL transmission, the terminal device performs cell selection or cell reselection based on the second parameter.
  • the terminal device when the terminal device supports the SUL transmission, the terminal device calculates a cell selection and reception level value of the first cell according to the first parameter, and the terminal device performs cell selection or cell reselection based on the level value.
  • the terminal device calculates a cell selection and reception level value of the first cell according to the second parameter, and the terminal device performs cell selection or cell reselection based on the level value.
  • the value of the first parameter is less than the value of the second parameter.
  • the terminal device is currently performing cell selection, possibly selecting a SUL cell, and possibly selecting a normal cell.
  • cell selection is performed by the terminal device according to the foregoing S criterion as an exemplary description.
  • the broadcast information also includes parameters such as Qrxlevmeas and Qrxlevminoffset for cell selection.
  • Qrxlevmeas and Qrxlevminoffset are the same as before, and are not described here.
  • the terminal device receives the broadcast information for the cell #A sent by the network device, where the broadcast information includes the first parameter and the second parameter;
  • the broadcast information is broadcast information in system information of the cell #A received by the terminal device.
  • the embodiment of the present application considers the impact of the SUL cell on the terminal device cell selection or cell reselection.
  • the cell may be a SUL cell when the terminal device cell is selected, it may be a normal cell, but here, only the SUL cell is considered, that is, , cell #A is a SUL cell.
  • the first parameter is used to determine a minimum reception level required by the cell #A for the terminal device supporting the SUL transmission
  • the second parameter is used to determine the minimum reception level required by the cell #A for the terminal device that does not support the SUL transmission.
  • the first parameter is the minimum reception level required by cell #A for a terminal device supporting SUL transmission
  • the second parameter is the minimum reception level required by cell #A for a terminal device that does not support SUL transmission.
  • the first parameter is used to indicate between the minimum reception level value required by cell #A for a terminal device that does not support SUL transmission and the minimum reception level value that cell #A requires for a terminal device that supports SUL transmission.
  • the second parameter is used to indicate the minimum reception level value required by the cell #A for the terminal device that does not support the SUL transmission.
  • the first parameter is used to indicate the minimum reception level value required by the cell #A for the terminal device supporting the SUL transmission
  • the second parameter is used to indicate the minimum required by the cell #A for the terminal device that does not support the SUL transmission. The difference between the received level value and the minimum received level value required by the cell #A for the terminal device supporting the SUL transmission.
  • the terminal device supporting the SUL transmission calculates the cell selection reception level value Srxlev of the cell #A, that is, the S value of the cell #A according to the first parameter, and then the terminal device performs cell selection based on the level value; the terminal device SUL is not supported.
  • the transmitted terminal device calculates the cell selection reception level value Srxlev of the cell #A, that is, the S value of the cell #A, according to the second parameter, and then the terminal device performs cell selection based on the level value.
  • the terminal device supporting the SUL transmission can calculate the S value based on the modified S criterion formula, and the modified S criterion formula is:
  • Offset_1 is a deviation amount, wherein the deviation amount may be set by the network device according to the capability of the terminal device or the configuration of the network device, and is sent to the terminal device in the system information, which is not limited in this application; meanings of other parameters Same as before.
  • the calculation formula of the S value in the prior art may be used, or the modified S criterion formula may be used to calculate the S value, but Offset_1 is 0.
  • a terminal device that does not support SUL transmission may calculate an S value based on the following modified S-criteria formula, and the modified S-criteria formula is:
  • the Offset_2 is a deviation quantity, wherein the deviation quantity may be set by the network device according to the capability of the terminal device or the configuration of the network device, and is sent to the terminal device in the system information, which is not limited in this application; meanings of other parameters Same as before.
  • the calculation formula of the S value in the prior art may be used, or the modified S criterion formula may be used to calculate the S value, but Offset_2 is 0.
  • a terminal device that does not support SUL transmission may calculate an S value based on the following modified S-criteria formula, and the modified S-criteria formula is:
  • the Offset_3 is a deviation amount, wherein the deviation amount may be set by the network device according to the capability of the terminal device or the configuration of the network device, and is sent to the terminal device in the system information, which is not limited in this application; meanings of other parameters Same as before.
  • the calculation formula of the S value in the prior art may be used, or the modified S criterion formula may be used to calculate the S value, but Offset_3 is 0.
  • the selection criteria can be modified:
  • the Offset_4 is a deviation amount, which may be set by the network device according to the capability of the terminal device or the configuration of the network device, and is sent to the terminal device in the system information, which is not limited in this application.
  • Offset_4 is 0.
  • scenario 1 by calculating the S value for different types of terminal devices in the SUL cell, it is possible to effectively avoid the terminal device that cannot support the SUL transmission and the terminal device that does not support the SUL transmission in the SUL cell, thereby avoiding premature Choose or choose too late, or avoid choosing an inappropriate cell to improve system performance.
  • the terminal device currently camps on the SUL cell and may need to reselect to other SUL cells or other common cells.
  • both region 1 and region 2 can continue to camp on the cell;
  • the terminal device cannot support SUL transmission: it may not be reselected in area 1, and area 2 needs to be reselected to other cells, because in area 2, the terminal device can only transmit through SUL.
  • the terminal device currently camps on the normal cell and may need to reselect to the SUL cell, including:
  • the SUL neighboring cell that is, the neighboring cell of the current serving cell of the terminal device is a SUL cell
  • scenario 2 and scenario 3 are for the case of cell reselection, and can be explained in one piece.
  • the terminal device resides in the SUL cell, and calculates the S value in the serving cell according to the manner in the scenario 1, and starts the measurement criterion.
  • the specific measurement criteria are described below.
  • the calculation of the S value of the terminal device in the camping cell is similar to that in the scenario 1.
  • the S value of the terminal device in the serving cell is calculated according to the manners 1 to 4 in the scenario 1 above. Let me repeat.
  • the method for calculating the S value of the serving cell is similar to that in the scenario 1 and is not described here.
  • the terminal device currently resides in a cell, denoted as cell #B, and performs cell reselection.
  • the terminal device receives the broadcast information included in the system information sent by the cell #B, and includes the broadcast information for the cell #B and the broadcast information for the neighboring cell.
  • the broadcast information for the cell #B is received at the terminal.
  • the Rs value may be calculated according to the previously received broadcast information for the cell #B, where Rs is the ranking value of the current serving cell cell #B.
  • the terminal device also receives broadcast information of the neighboring area.
  • the embodiment of the present application considers the impact of the SUL cell on cell selection or reselection. Therefore, for the neighboring cell, only the case where the neighboring cell is the SUL cell is considered.
  • the terminal device determines that the serving cell or the neighboring cell is a SUL cell.
  • the terminal device determines that the frequency band used by the first cell includes the SUL after determining that the broadcast information includes the first parameter and the second parameter for the first cell.
  • the frequency band, that is, the neighboring cell of the first cell is a SUL cell, the advantage is that no special indication information is needed, and the signaling overhead is saved; or the terminal device receives the broadcast information for the first cell in the neighboring cell, and the broadcast information includes Indicates that the neighboring area is an indication of the SUL.
  • the cell #B is the serving cell of the terminal device, and the terminal device receives the broadcast information of the serving cell, where the broadcast information includes the first parameter and the second parameter for the first cell, where the first cell is The situation in the neighbourhood. Description will be made in conjunction with FIG. 4.
  • the broadcast information includes a first parameter #1 (ie, an example of the first parameter) and a second parameter #1 (ie, an example of the second parameter) for the same neighboring cell frequency as the cell #B, or,
  • the broadcast information includes a first parameter #2 (ie, an example of the first parameter) and a second parameter #2 (ie, an example of the second parameter) for the neighboring cell different from the cell #B frequency, wherein the first parameter #1 is used to determine the minimum reception level value required by the neighboring cell with the same frequency to the terminal device supporting the SUL transmission, and the second parameter #1 is used to determine the minimum reception required by the neighboring cell with the same frequency to the terminal device that does not support the SUL transmission.
  • the level value, the first parameter #2 is used to determine the minimum reception level value required by the neighboring cell with different frequency to support the terminal device supporting SUL transmission, and the second parameter #2 is used to determine the neighboring cell pair with different frequency to support the SUL The minimum reception level value required for the transmitted terminal equipment.
  • the broadcast information includes a first parameter #1 (ie, an example of the first parameter) and a second parameter #1 (ie, an example of the second parameter) for the same neighboring cell frequency as the cell #B, and further The first parameter #2 (ie, an example of the first parameter) and the second parameter #2 (ie, an example of the second parameter) for the neighboring cell different from the cell #B frequency, wherein the first parameter #1 is included A minimum reception level value required for determining a terminal device having the same frequency to a terminal device supporting SUL transmission, and a second parameter #1 for determining a minimum reception level required by a neighboring cell having the same frequency for a terminal device not supporting SUL transmission.
  • the first parameter #2 is used to determine the minimum reception level value required by the neighboring cell with different frequency for the terminal device supporting SUL transmission
  • the second parameter #2 is used for determining the neighboring cell with different frequency to support the SUL transmission.
  • the first parameter #1 is the minimum reception level value required by the neighboring cell of the same frequency to the terminal device supporting the SUL transmission
  • the second parameter #1 is the neighboring cell of the same frequency pair to the terminal not supporting the SUL transmission.
  • the first parameter #2 is used to determine the minimum reception level value required by the neighboring cell with different frequency for the terminal device supporting SUL transmission
  • the second parameter #2 is used for determining the neighboring cell with different frequency to the terminal that does not support the SUL transmission.
  • the minimum receive level value required by the device is used to determine the minimum reception level value required by the neighboring cell with different frequency for the terminal device supporting SUL transmission.
  • the first parameter #1 is the minimum reception level value required by the neighboring cell of the same frequency to the terminal device supporting the SUL transmission
  • the second parameter #1 is the neighboring cell of the same frequency pair to the terminal not supporting the SUL transmission.
  • the first parameter #2 is a neighboring cell with different frequency to support SUL transmission.
  • the minimum receiving level value required by the terminal device, the second parameter #2 is the neighboring cell with different frequency and the minimum receiving level value required by the terminal device supporting the SUL transmission, and the neighboring cell with different frequency to the terminal device supporting the SUL transmission
  • the first parameter #1 is the minimum received power required by the neighboring cell of the same frequency to the terminal device that does not support the SUL transmission, and the minimum receiving level required by the neighboring cell with the same frequency to the terminal device supporting the SUL transmission.
  • the difference of the flat value the second parameter #1 is the minimum receiving level value required by the neighboring cell with the same frequency for the terminal device that does not support the SUL transmission, and the first parameter #2 is the neighboring cell with the different frequency and does not support the SUL transmission.
  • the minimum receiving level value required by the terminal device is different from the minimum receiving level value of the neighboring cell whose frequency is different from the terminal device supporting the SUL transmission, and the second parameter #2 is not supported by the neighboring cell with different frequency.
  • the neighboring cells at a certain frequency are not all SUL cells, and are not all common cells, that is, the part is a SUL cell, and some are ordinary cells, and the broadcast information may further include a list of SUL cells at each frequency.
  • the information, or the information of the normal cell list, or the cell under the cell list is the indication information of the SUL cell, so that the terminal device supporting the SUL transmission can select the first parameter #1 or the first parameter #2 to use.
  • the downlink transmit power of the base station may be different considering that the coverage requirements thereof are different.
  • different first parameters and/or second parameters may be set for different cells, that is, the first parameter and/or the second parameter are cell level. That is, one cell list at each frequency, and each cell in the cell list corresponds to the first parameter and/or the second parameter.
  • the first parameter is used for cell reselection performed by the terminal device supporting SUL transmission
  • the second parameter is used for cell reselection performed by the terminal device that does not support SUL transmission.
  • the first parameter #1 and the second parameter #1 are similar to the first parameter and the second parameter in the scenario 1, and are not described here.
  • the base station exchanges the first parameter and/or the second parameter configuration, for example, when establishing an interface between the base stations.
  • the first parameter #1 or the second parameter #1 is used, and if the neighboring cell is different from the frequency of the cell #B, the first is used.
  • Parameter #2 or second parameter #2 is used.
  • the functions of the first parameter #2 and the first parameter #1 are similar, that is, the first parameter #1 or the first parameter #2 is used for cell selection or cell reselection by the terminal device supporting SUL transmission;
  • the function of parameter #2 or second parameter #1 is similar, that is, the second parameter #1 or the second parameter #2 is used for cell selection or cell reselection by the terminal device that does not support SUL transmission.
  • the first parameter #1 and the second parameter #1 are for the same frequency as the cell #B, and the first parameter #2 and the second parameter #2 are for cells different from the cell #B frequency.
  • the calculation of the S value is similar to that of the scenario 1, and will not be described here.
  • the calculation of the S value of the scene 1 is also suitable for the scene 2 and the scene 3.
  • the terminal device is a terminal device that does not support SUL transmission. If the cell #B is a SUL cell, the measurement criterion of the cell reselection is:
  • the terminal device initiates measurement of the same frequency cell
  • the terminal device initiates measurements on the same priority frequency or low priority frequency and system;
  • the Offset is a preset offset, and the preset offset may be set by the network device according to the capability of the terminal device or the configuration of the network device, which is not limited in this application; the meanings of other parameters are the same as before. No longer.
  • the reselection criteria are as follows:
  • High priority frequency or system reselection criteria Srxlev>Threshx-high+Offset of the target frequency cell, and lasts during the cell reselection time;
  • Low priority frequency or reselection criterion of the system (taking the serving cell as an example of the SUL cell): Srxlev ⁇ Threshserving-low+Offset-s of the serving cell, and Srxlev>Threshx-low+Offset-n of the target frequency cell, and Continued during the cell reselection time.
  • Offset, Offset-s, and Offset-n are deviation amounts
  • Offset-s and Offset-n are deviation amounts of the serving cell and the target frequency cell, respectively.
  • the amount of the deviation may be set by the network device according to the capability of the terminal device or the configuration of the network device, which is not limited in this application; the meanings of other parameters are the same as the foregoing, and are not described herein again.
  • the terminal device supporting the SUL transmission may perform cell reselection based on an existing manner, or the above-described offset amount is set to zero.
  • the measurement criteria and reselection criteria of the cell reselection take into account different types of terminal devices, which can avoid premature or late reselection of the terminal device, thereby improving system performance.
  • the influence of the SUL band needs to be considered. Because, for a terminal device that does not support SUL transmission, although the measured downlink signal of the SUL serving cell or the SUL neighboring cell is good, the edge of the reselection may still be needed due to the uplink, and therefore the Ranking value calculated for the SUL cell. Some corrections are needed and then sorted with other cells so that their ordering is adjusted backwards.
  • R s Qmeas_s-Offset_sul+Qhyst s
  • R n Qmeas_s-Offset_sul–Qoffset
  • the Offset_sul may use the same Offset as the S criterion value, or may be the difference between the second parameter and the first parameter, or may be a dedicated deviation amount of the network configuration.
  • the uplink and downlink coverage of the SUL cell can be considered to be the same.
  • the original formula can be used directly, or the above formula is also used, but the Offset_sul value is 0.
  • the correction value of the SUL cell calculation is corrected, and there is another manner, that is, for the terminal device supporting the SUL transmission, the correction value for the SUL cell calculation needs to be corrected. And then sorting with other cells, so that their sorting is adjusted forward.
  • the Offset_sul may use the same Offset as the S criterion value, or may be the difference between the second parameter and the first parameter, or may be a dedicated deviation amount of the network configuration.
  • Offset_sul takes the value 0.
  • the Ranking sequence is divided into two groups, which are used for sorting of SUL cells and sorting of common cells, preferentially selecting SUL cells, or preferentially selecting common cells, or preferentially selecting which cells in the group according to network configuration; If there are multiple cells in the group, the cell with the highest ranking is selected.
  • scenario 2 when the terminal device resides in the SUL cell and performs cell selection, the calculation of the S value of the terminal device in the camped cell is similar to that in scenario 1, and details are not described herein again.
  • the “terminal device that does not support SUL transmission” includes a SUL frequency band in which the terminal device does not support the SUL feature, or supports the SUL feature but does not support the SUL cell.
  • the broadcast information received by the terminal device includes a first parameter and a second parameter, where the first parameter is used for cell selection or cell reselection performed by the terminal device supporting SUL transmission, and second The parameter is used for cell selection or cell reselection by a terminal device that does not support SUL transmission, thereby being able to balance both types of terminal devices, avoiding premature selection or reselection of the terminal device, or selecting or reselecting too late, and further Can improve system performance.
  • the cell selection or cell reselection method in the embodiment of the present application is described in detail above with reference to FIG. 2 to FIG. The following describes in detail, in the SUL cell, which uplink frequency band is selected by the terminal device to initiate random access in conjunction with FIG.
  • the method includes: when the received signal strength value is less than a preset threshold, the terminal device passes the first cell when initiating the initial access.
  • the SUL frequency band initiates a random access procedure; or, when the received signal strength value is not less than a preset threshold, the terminal device initiates a random access procedure through the primary uplink frequency band of the first cell when initiating the initial access.
  • the preset first threshold may be a second parameter, and the second parameter is the same as the second parameter when the cell is selected or the cell is reselected. This can reduce signaling overhead.
  • the preset threshold may be independent of the first parameter or the second parameter, and is an independent threshold, which may improve flexibility, and the specific value may be determined based on the configuration of the network device itself or the capability of the terminal device.
  • the application is not limited.
  • the terminal device when the number of times that the terminal device fails to initiate the random access procedure in the primary uplink frequency band is greater than the preset first threshold, the terminal device initiates a random access procedure through the SUL frequency band.
  • the terminal device initiates random access through the primary uplink frequency band, which may fail multiple times.
  • the preset first threshold is exceeded, the terminal device initiates random access through the SUL frequency band.
  • the access process can improve the success rate of random access.
  • the preset first threshold may be a network configuration, or may be configured according to experience, which is not limited in this application.
  • the radio link failure may be considered as a failure, wherein the total number of failures may be that the terminal device passes the SUL frequency band and the main uplink frequency band. The sum of the number of failed random access attempts.
  • the terminal device when the first cell is a serving cell of the terminal device, and is a SUL cell, and the terminal device does not support the SUL transmission, the terminal device that does not support the SUL transmission needs to initiate the initial access, first. It is determined that if the signal strength of the currently camped cell (the first cell) is less than a threshold, the terminal device does not initiate random access in the first cell, but initiates a cell selection process, and after the serving cell is replaced, initiates initial access. This method will prevent the terminal device from trying random access multiple times and failing multiple times.
  • the terminal device that does not support the SUL transmission uses the same cell selection or cell reselection parameter/mechanism as the terminal device that supports the SUL transmission, but the terminal device that does not support the SUL transmission first determines when the initial access needs to be initiated. If the signal strength of the currently camped cell is less than a threshold (for example, a threshold defined by the RAN1 working group, or a new threshold), the terminal device initiates a cell reselection process and replaces the serving cell, and then initiates initial access. This method will prevent the terminal device from attempting random access multiple times, failing multiple times, and being relatively simple.
  • a threshold for example, a threshold defined by the RAN1 working group, or a new threshold
  • the method for communication in the embodiment of the present application is described in detail from the perspective of a terminal device in conjunction with FIG. 2 to FIG.
  • the method of communication in the embodiment of the present application is described in detail below from the perspective of a network device in conjunction with FIG. 6.
  • FIG. 6 is a schematic diagram of a method of communication according to another embodiment of the present application.
  • the network device sends broadcast information, where the broadcast information includes a first parameter and a second parameter for the first cell, where the first parameter is used to support cell selection or cell reselection performed by the terminal device that supplements the uplink carrier SUL transmission.
  • the second parameter is used for cell selection or cell reselection by a terminal device that does not support SUL transmission.
  • the network device sends the broadcast information including the first parameter and the second parameter for the first cell, so that the terminal device supporting the SUL transmission and the terminal device unable to support the SUL transmission may perform cell selection based on different parameters or Cell reselection can avoid premature selection or reselection of terminal devices, or late selection or reselection.
  • the network device sends broadcast information, where the broadcast information includes a first parameter and a second parameter for the first cell, and is used by the terminal device to determine whether to stay in the first Whether the cell is reselected in the first cell, where the first cell may be a serving cell of the terminal device or a neighboring cell of the terminal device.
  • the broadcast information may be used by the terminal device multiple times, for example, the first parameter and the second parameter for the first cell included in the broadcast information, then the cell selection or cell reselection in the terminal device.
  • the first parameter and the second parameter may be used by the terminal device multiple times during the entire process or during multiple cell reselection.
  • the first parameter is used to determine a minimum receiving level value required by the first cell for the terminal device supporting the SUL transmission
  • the second parameter is used to determine the minimum receiving power required by the first cell for the terminal device that does not support the SUL transmission.
  • the first parameter is a minimum receiving level required by the first cell to the terminal device supporting the SUL transmission
  • the second parameter is that the first cell supports the SUL transmission and the first cell does not support the SUL transmission. The difference between the minimum reception level values required by the terminal equipment.
  • the first parameter is a difference between a minimum receiving level required by the first cell for the terminal device not supporting the SUL transmission and a minimum receiving level value required by the first cell for the terminal device supporting the SUL transmission, and the second parameter It is the minimum reception level required by the first cell for a terminal device that does not support SUL transmission.
  • the value of the first parameter is less than the value of the second parameter.
  • the terminal device is currently performing cell selection, possibly selecting a SUL cell, and possibly selecting a normal cell.
  • cell selection is performed by the terminal device according to the foregoing S criterion as an exemplary description.
  • the broadcast information sent by the network device further includes parameters such as Qrxlevmeas, Qrxlevmin and Qrxlevminoffset for cell selection, wherein the meanings of Qrxlevmeas, Qrxlevmin and Qrxlevminoffset are the same as before, and are not described herein again.
  • the network device sends broadcast information for the cell #A, where the broadcast information includes the first parameter and the second parameter;
  • the embodiment of the present application considers the impact of the SUL cell on the terminal device cell selection or cell reselection.
  • the cell may be a SUL cell when the terminal device cell is selected, it may be a normal cell, but here, only the SUL cell is considered, that is, , cell #A is a SUL cell.
  • the first parameter is used to determine a minimum reception level value required by the cell #A for the terminal device supporting the SUL transmission
  • the second parameter is used to determine the minimum reception power required by the cell #A for the terminal device that does not support the SUL transmission.
  • the first parameter is the minimum reception level value required by cell #A for the terminal device supporting SUL transmission
  • the second parameter is the minimum reception level value required by cell #A for the terminal device not supporting SUL transmission.
  • the first parameter is the minimum reception level value required by cell #A for the terminal device supporting SUL transmission
  • the second parameter is the minimum reception level value required by cell #A for the terminal device supporting SUL transmission. The difference between the minimum reception level values required by the cell #A for terminal devices that do not support SUL transmission.
  • the first parameter is the difference between the minimum reception level value required by cell #A for a terminal device that does not support SUL transmission and the minimum reception level value required by cell #A for a terminal device that supports SUL transmission
  • the second parameter is the minimum reception level value required by cell #A for a terminal device that does not support SUL transmission.
  • the broadcast information sent by the network device includes a first parameter and a second parameter, where the first parameter is used for cell selection or cell reselection by the terminal device supporting SUL transmission, and the second parameter Cell selection or cell reselection performed by a terminal device that does not support SUL transmission can effectively avoid terminal devices that support SUL transmission and terminal devices that do not support SUL transmission in a SUL cell, thereby avoiding premature selection. Or choose too late to improve system performance.
  • the terminal device currently camps on the SUL cell and may need to reselect to other SUL cells or other common cells.
  • both region 1 and region 2 can continue to camp on the cell;
  • the terminal device cannot support SUL transmission: it may not be reselected in area 1, and area 2 needs to be reselected to other cells, because in area 2, the terminal device can only transmit through SUL.
  • the terminal device currently camps on the normal cell and may need to reselect to the SUL cell, including:
  • the SUL neighboring cell that is, the neighboring cell of the current serving cell of the terminal device is a SUL cell
  • scenario 2 and scenario 3 are for the case of cell reselection, and can be explained in one piece.
  • the terminal device resides in the SUL cell, and after the cell resides, the terminal device starts the measurement criterion according to the calculated S value, and specific measurement criteria are described below.
  • the method for calculating the S value of the terminal device in the camping cell and the neighboring cell is the same as the method for calculating the S value in the cell selection in the scenario 1, and includes the steps S301 to S303 and the mode 1 to mode 4, and the details are not described herein again.
  • the terminal device currently resides in a cell, denoted as cell #B, and performs cell reselection.
  • the network device sends the broadcast information for the cell #B when the terminal device is selected. Therefore, the broadcast information can be used to calculate the Rs value again when the terminal device performs cell reselection, where Rs is the current serving cell cell# The ranking value of B.
  • the broadcast information sent by the network device also includes broadcast information of the neighboring area.
  • the embodiment of the present application considers the impact of the SUL cell on cell selection or reselection. Therefore, only the case where the neighboring cell is a SUL cell is considered here.
  • the network device after determining that the broadcast information sent by the network device includes the first parameter and the second parameter for the first cell, determining that the frequency band used by the first cell includes a SUL frequency band, that is, the neighboring cell is a SUL cell; or, the network device
  • the broadcast information for the neighboring area is transmitted, and the broadcast information includes indication information indicating that the neighboring area is a SUL.
  • the broadcast information includes a first parameter #1 and a second parameter #1 for the same neighboring cell frequency as the cell #B, and further includes a first parameter #2 for the neighboring cell that is different from the cell #B frequency. And a second parameter #2, wherein the first parameter #1 is used to determine a minimum reception level value required by the neighboring cell with the same frequency for the terminal device supporting the SUL transmission, and the second parameter #1 is used to determine the neighboring cell with the same frequency.
  • the first parameter #2 is used to determine the minimum reception level value required by the neighboring cell with different frequency for the terminal device supporting SUL transmission
  • the second parameter #2 A minimum reception level value required for determining a terminal device having a different frequency to a terminal device that does not support SUL transmission.
  • the first parameter #1 is the minimum reception level value required by the neighboring cell of the same frequency to the terminal device supporting the SUL transmission
  • the second parameter #1 is the neighboring cell of the same frequency pair to the terminal not supporting the SUL transmission.
  • the first parameter #2 is used to determine the minimum reception level value required by the neighboring cell with different frequency for the terminal device supporting SUL transmission
  • the second parameter #2 is used for determining the neighboring cell with different frequency to the terminal that does not support the SUL transmission.
  • the minimum receive level value required by the device is used to determine the minimum reception level value required by the neighboring cell with different frequency for the terminal device supporting SUL transmission.
  • the first parameter #1 is the minimum reception level value required by the neighboring cell of the same frequency to the terminal device supporting the SUL transmission
  • the second parameter #1 is the neighboring cell of the same frequency pair to the terminal device supporting the SUL transmission.
  • the minimum required reception level value is the difference between the minimum reception level value of the neighboring cell having the same frequency and the terminal device not supporting the SUL transmission
  • the first parameter #2 is the neighboring cell with the same frequency to the terminal supporting the SUL transmission.
  • the second parameter #2 is the neighboring cell with different frequency and the minimum receiving level value required by the terminal device supporting the SUL transmission.
  • the neighboring cell with the frequency is different from the terminal device that does not support the SUL transmission. The difference between the minimum required reception level values.
  • the first parameter #1 is the minimum received power required by the neighboring cell of the same frequency to the terminal device that does not support the SUL transmission, and the minimum receiving level required by the neighboring cell with the same frequency to the terminal device supporting the SUL transmission.
  • the difference of the flat value the second parameter #1 is the minimum receiving level value required by the neighboring cell with the same frequency for the terminal device that does not support the SUL transmission, and the first parameter #2 is the neighboring cell with the different frequency and does not support the SUL transmission.
  • the minimum receiving level value required by the terminal device is different from the minimum receiving level value of the neighboring cell whose frequency is different from the terminal device supporting the SUL transmission, and the second parameter #2 is not supported by the neighboring cell with different frequency.
  • the neighboring cells at a certain frequency are not all SUL cells, and are not all common cells, that is, the part is a SUL cell, and some are ordinary cells, and the broadcast information may further include a list of SUL cells at each frequency.
  • the information, or the information of the normal cell list, or the cell under the cell list is the indication information of the SUL cell, so that the terminal device supporting the SUL transmission can select the first parameter #1 or the first parameter #2 to use.
  • the downlink transmit power of the base station may be different considering that the coverage requirements thereof are different.
  • different first parameters and/or second parameters may be set for different cells, that is, the first parameter and/or the second parameter are cell level. That is, one cell list at each frequency, and each cell in the cell list corresponds to the first parameter and/or the second parameter.
  • the first parameter is used for cell reselection performed by the terminal device supporting SUL transmission
  • the second parameter is used for cell reselection performed by the terminal device that does not support SUL transmission.
  • the first parameter #1 and the second parameter #1 are similar to the first parameter and the second parameter in the scenario 1, and are not described here.
  • the base station exchanges the first parameter and/or the second parameter configuration, for example, when establishing an interface between the base stations.
  • first parameter #2 and the first parameter #1 are similar, that is, the first parameter #1 or the first parameter #2 is used for cell selection or cell reselection performed by the terminal device supporting SUL transmission;
  • the functions of the second parameter #2 or the second parameter #1 are similar, that is, the second parameter #1 or the second parameter #2 is used for cell selection or cell reselection by the terminal device that does not support SUL transmission.
  • the first parameter #1 and the second parameter are for the same frequency as the cell #B, and the first parameter #2 and the second parameter #2 are for cells different from the cell #B frequency.
  • the broadcast information sent by the network device includes a first parameter and a second parameter, where the first parameter is used for cell selection or cell reselection performed by the terminal device supporting SUL transmission, and second The parameter is used for cell selection or cell reselection by a terminal device that does not support SUL transmission, thereby being able to balance both types of terminal devices, avoiding premature selection or reselection of the terminal device, or selecting or reselecting too late, and further Can improve system performance.
  • FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device can be applied to the cell shown in FIG. 1 to perform the function of the terminal device in the foregoing method embodiment.
  • FIG. 7 shows only the main components of the terminal device.
  • the terminal device 70 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing the communication protocol and the communication data, and controlling the entire terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to perform the actions described in the foregoing method embodiments, such as And performing cell selection or cell reselection based on the first parameter.
  • the memory is mainly used for storing software programs and data, for example, storing the correspondence between the indication information and the combination information described in the above embodiments.
  • the control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the control circuit together with the antenna can also be called a transceiver, and is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 7 shows only one memory and one processor for ease of illustration. In an actual terminal device, there may be multiple processors and multiple memories.
  • the memory may also be referred to as a storage medium or a storage device, and the like.
  • the processor may include a baseband processor and a central processing unit, and the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control and execute the entire terminal device.
  • the processor in FIG. 7 can integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus.
  • the terminal device may include a plurality of baseband processors to accommodate different network standards, and the terminal device may include a plurality of central processors to enhance its processing capabilities, and various components of the terminal devices may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and the control circuit having the transceiving function can be regarded as the transceiving unit 701 of the terminal device 70, for example, for supporting the terminal device to perform the receiving function function as described in part in FIG.
  • the processor having the processing function is regarded as the processing unit 702 of the terminal device 70.
  • the terminal device 70 includes a transceiver unit 701 and a processing unit 702.
  • the transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like.
  • the device for implementing the receiving function in the transceiver unit 701 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 701 is regarded as a sending unit, that is, the transceiver unit 701 includes a receiving unit and a sending unit.
  • the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
  • the processor 702 can be configured to execute the instructions stored in the memory to control the transceiver unit 701 to receive signals and/or transmit signals to complete the functions of the terminal device in the foregoing method embodiment.
  • the function of the transceiver unit 701 can be implemented by a dedicated chip through a transceiver circuit or a transceiver.
  • FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present disclosure, which may be a schematic structural diagram of a base station.
  • the base station 80 can include one or more radio frequency units, such as a remote radio unit (RRU) 801 and one or more baseband units (BBUs) (also referred to as digital units, DUs).
  • RRU remote radio unit
  • BBUs baseband units
  • the RRU 801 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 8011 and a radio frequency unit 8012.
  • the RRU 801 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting the signaling messages described in the foregoing embodiments to the terminal device.
  • the BBU 802 part is mainly used for performing baseband processing, controlling a base station, and the like.
  • the RRU 801 and the BBU 802 may be physically disposed together or physically separated, that is, distributed base stations.
  • the BBU 802 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, and the like.
  • the BBU (processing unit) 802 can be used to control the base station to perform an operation procedure about the network device in the foregoing method embodiment.
  • the BBU 802 may be configured by one or more boards, and multiple boards may jointly support a single access indication radio access network (such as an LTE network), or may support different access systems respectively. Radio access network (such as LTE network, 5G network or other network).
  • the BBU 802 also includes a memory 8021 and a processor 8022 for storing the necessary instructions and data.
  • the memory 8021 stores the correspondence relationship between the codebook index and the precoding matrix in the above embodiment.
  • the processor 8022 is configured to control a base station to perform necessary actions, for example, to control a base station to perform an operation procedure of the network device in the foregoing method embodiment.
  • the memory 8021 and the processor 8022 can serve one or more boards. That is, the memory and processor can be individually set on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.
  • FIG. 9 shows a schematic structural diagram of a communication device 900.
  • the device 900 can be used to implement the method described in the foregoing method embodiments, and can be referred to the description in the foregoing method embodiments.
  • the communication device 900 can be a chip, a network device (such as a base station), a terminal device or other network device, and the like.
  • the communication device 900 includes one or more processors 901.
  • the processor 901 can be a general purpose processor or a dedicated processor or the like.
  • it can be a baseband processor, or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (eg, base stations, terminals, or chips, etc.), execute software programs, and process data of the software programs.
  • the communication device may include a transceiver unit for implementing input (reception) and output (transmission) of signals.
  • the communication device can be a chip, and the transceiver unit can be an input and/or output circuit of the chip, or a communication interface.
  • the chip can be used for a terminal or base station or other network device.
  • the communication device may be a terminal or a base station or other network device
  • the transceiver unit may be a transceiver, a radio frequency chip, or the like.
  • the communication device 900 includes one or more of the processors 901, and the one or more processors 901 can implement the methods of the network devices or terminal devices in the embodiments shown in FIG. 2 to FIG.
  • the communication device 900 includes means for generating downlink control information DCI, and means for transmitting DCI.
  • the function of generating the DCI and the function of transmitting the DCI may be implemented by one or more processors.
  • the DCI may be generated, for example, by one or more processors, and transmitted via a transceiver, or an input/output circuit, or an interface of a chip.
  • For the indication information refer to the related description in the foregoing method embodiment.
  • the communication device 900 includes means for generating indication information and QCL information, and means for transmitting the indication information and QCL information.
  • the indication information and QCL information may be generated, for example, by one or more processors, and the indication information and QCL information may be transmitted through a transceiver, or an input/output circuit, or an interface of a chip.
  • the indication information and the QCL information may be sent through the DCI, or the QCL information may be sent through the high layer signaling, such as RRC signaling, and the indication information is sent through the DCI.
  • the communication device 900 includes means for receiving downlink control information DCI and means for determining a DMRS antenna port.
  • the DCI and how to determine the DMRS antenna port can be referred to the related description in the above method embodiment.
  • the DCI may be received, for example, by a transceiver, or an input/output circuit, or an interface of a chip, and the DMRS antenna port is determined based on the DCI by one or more processors to demodulate the received signal.
  • the communication device 900 includes means for receiving indication information and QCL information, and means for determining a DMRS antenna port.
  • the indication information and the QCL information, and how to determine the DMRS antenna port based on the indication information and the QCL information, may be referred to the related description in the above method embodiments.
  • the indication information and the QCL information may be received, for example, by a transceiver, or an input/output circuit, or an interface of the chip, and the DMRS antenna port is determined based on the indication information and the QCL by one or more processors, thereby demodulating the received signal.
  • processor 901 can implement other functions in addition to the methods of the embodiments shown in FIG. 2 to FIG.
  • the processor 901 may also include instructions 903 that may be executed on the processor such that the communication device 900 performs the methods described in the above method embodiments.
  • the communication device 900 can also include circuitry that can implement the functions of the foregoing method embodiments.
  • the communication device 900 can include one or more memories 902 having instructions 904 stored thereon that can be executed on the processor such that the communication device 900 executes The method described in the above method embodiments.
  • data may also be stored in the memory.
  • Instructions and/or data can also be stored in the optional processor.
  • the one or more memories 902 may store the correspondence between the indication information and the combination information described in the foregoing embodiments, or the parameters related to the combination information, or the related parameters involved in the foregoing embodiment or Forms, etc.
  • the processor and the memory may be provided separately or integrated.
  • the communication device 900 may further include a transceiver unit 905 and an antenna 906.
  • the processor 901 may be referred to as a processing unit that controls a communication device (terminal or base station).
  • the transceiver unit 905 can be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., for implementing the transceiver function of the communication device through the antenna 906.
  • processors in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration.
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • RAM random access memory
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic randomness synchronous dynamic randomness.
  • Synchronous DRAM SDRAM
  • DDR SDRAM double data rate synchronous DRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory Take memory
  • DR RAM direct memory bus random access memory
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product comprises one or more computer instructions or computer programs.
  • the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains one or more sets of available media.
  • the usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium.
  • the semiconductor medium can be a solid state hard drive.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本申请提供一种通信的方法、通信装置和系统,该通信方法包括:终端设备接收广播信息,该广播信息包括针对第一小区的第一参数和第二参数,其中,第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选;当终端设备支持SUL传输时,终端设备基于第一参数进行小区选择或小区重选,或,当终端设备不支持SUL传输时,终端设备基于第二参数进行小区选择或小区重选,从而,能够兼顾支持SUL传输的终端设备和不支持SUL传输的终端设备,避免终端设备过早或过晚的小区选择或者小区重选,提高系统性能。

Description

通信的方法、通信装置和系统
本申请要求于2017年11月16日提交中国专利局、申请号为201711140890.6、申请名称为“通信的方法、通信装置和系统”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域,并且更具体地,涉及通信的方法、通信装置和系统。
背景技术
对于传统的小区,上行和下行的频率是相同的或相近的。对于下行,基站的发射功率基本不受限,但是终端设备受限于电池、成本等因素,发射功率是有限制的。为了增大小区的覆盖,基站可以使用更大的发射功率发送以提高下行覆盖范围,但是终端设备受限于最大发射功率等原因无法通过下行相同的方法(即提高发射功率)来提高上行覆盖范围,造成上下行的覆盖不一致。一个新的技术是,小区除了原有的一个上行外,还可以有一个额外的更低频率的上行频段,我们称之为增补上行载波(Supplemental Uplink,SUL),终端设备可以通过SUL来发送上行,从而提高上行覆盖。
然而,由于有些终端设备支持SUL进行上行传输,有些终端设备不支持SUL进行上行传输。因此,在终端设备进行小区选择或小区重选时,需要兼顾支持SUL传输的终端设备和不支持SUL传输的终端设备,避免造成终端设备过早或者过晚的小区选择或小区重选,降低系统性能。
发明内容
本申请提供一种通信的方法、通信装置和系统,能够避免终端设备过早或过晚的小区选择或小区重选。
第一方面,提供了一种通信的方法,该方法包括:终端设备接收广播信息,该广播信息包括针对第一小区的第一参数和第二参数,其中,第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选;当终端设备支持SUL传输时,终端设备基于所述第一参数进行小区选择或小区重选,或,当终端设备不支持SUL传输时,终端设备基于第二参数进行小区选择或小区重选。
根据本申请实施例的通信的方法,通过广播信息包括针对第一小区的第一参数和第二参数,其中,第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选,这样,当终端设备支持SUL传输时,终端设备基于第一参数进行小区选择或小区重选,当终端设备不支持SUL传输时,终端设备基于第二参数进行小区选择或小区重选,从而, 能够兼顾支持SUL传输的终端设备和不支持SUL传输的终端设备,避免终端设备过早或过晚的小区选择或者小区重选,提高系统性能。
结合第一方面,在第一方面的某些实现方式中,第一参数用于确定第一小区对支持SUL传输的终端设备要求的最小接收电平,第二参数用于确定第一小区对不支持SUL传输的终端设备要求的最小接收电平。
结合第一方面,在第一方面的某些实现方式中,第一参数用于指示第一小区对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者,第一参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值与第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者,第一参数用于指示第一小区对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值与第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值。
根据本申请实施例的通信的方法,通过第一参数或第二参数确定不同能力的终端设备在第一小区进行上行传输时,第一小区要求的最小接收电平,可以使得不同能力的终端设备在进行小区选择或小区重选时,判断的方法或标准不同,从而,能够兼顾不同能力的终端设备,避免终端设备过早或过晚的小区选择或者小区重选,提高系统性能。
结合第一方面,在第一方面的某些实现方式中,当终端设备支持SUL传输时,终端设备基于第一参数进行小区选择或小区重选,包括:终端设备根据第一参数计算第一小区的小区选择接收电平值,终端设备基于该电平值进行小区选择或小区重选;当终端设备不支持SUL传输时,终端设备基于第二参数进行小区选择或小区重选,包括:终端设备根据第二参数计算第一小区的小区选择接收电平值,终端设备基于该电平值进行小区选择或小区重选。
根据本申请实施例的通信的方法,不同能力的终端设备在进行小区选择或小区重选时,根据不同的电平值,进行小区选择或小区重选,从而,能够兼顾不同能力的终端设备,避免终端设备过早或过晚的小区选择或者小区重选,提高系统性能。
结合第一方面,在第一方面的某些实现方式中,第一小区是终端设备的服务小区或邻小区。
结合第一方面,在第一方面的某些实现方式中,第一参数的值小于第二参数的值。
结合第一方面,在第一方面的某些实现方式中,终端设备在确定广播信息包括针对第一小区的第一参数和第二参数后,确定第一小区使用的频段包括SUL频段。
根据本申请实施例的通信的方法,终端设备通过确定广播信息中包括第一参数和第二参数,就可以确定第一小区使用的频段包括SUL频段,而不需要专门的指示信息,可以节省信令开销。
结合第一方面,在第一方面的某些实现方式中,测量接收第一小区的信号强度值;当第一小区是终端设备的服务小区,且终端设备支持SUL传输时,包括:当接收信号强度值小于预设的门限时,终端设备在发起初始接入时通过第一小区的SUL频段发起随机接入过程;或者,当接收信号强度值不小于预设的门限时,终端设备在发起初始接入时通过 第一小区的主上行频段发起随机接入过程。
根据本申请实施例的通信的方法,终端设备通过判断接收第一小区的信号强度值和预设的门限的大小,从而确定通过哪个上行频段发起随机接入过程,可以提高终端设备发起随机接入过程的成功率。
结合第一方面,在第一方面的某些实现方式中,终端设备通过主上行频段发起随机接入过程,包括:终端设备通过主上行频段发起随机接入过程失败的次数大于预设的第一阈值时,终端设备通过SUL频段发起随机接入过程。
根据本申请实施例的通信的方法,终端设备通过判断终端设备通过主上行频段发起随机接入过程失败的次数是否超过预设的第一阈值,也可以提高终端设备发起随机接入过程的成功率。
第二方面,提供了一种通信的方法,该方法包括:网络设备发送广播信息,该广播信息包括针对第一小区的第一参数和第二参数,其中,第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选。
根据本申请实施例的通信的方法,通过广播信息包括针对第一小区的第一参数和第二参数,其中,第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选,从而,能够兼顾支持SUL传输的终端设备和不支持SUL传输的终端设备,避免终端设备过早或过晚的小区选择或者小区重选,提高系统性能。
结合第二方面,在第二方面的某些实现方式中,第一参数用于确定第一小区对支持SUL传输的终端设备要求的最小接收电平,第二参数用于确定不支持SUL传输的终端设备在第一小区上进行上行传输时,第一小区要求的电平。
结合第二方面,在第二方面的某些实现方式中,第一参数用于指示第一小区对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者,第一参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值与第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者,第一参数用于指示第一小区对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值与所述第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值。
根据本申请实施例的通信的方法,通过第一参数或第二参数确定第一小区对不同能力的终端设备要求的最小接收电平,可以使得不同能力的终端设备在进行小区选择或小区重选时,判断的方法或标准不同,从而,能够兼顾不同能力的终端设备,避免终端设备过早或过晚的小区选择或者小区重选,提高系统性能。
结合第二方面,在第二方面的某些实现方式中,第一小区是终端设备的服务小区或邻小区。
结合第二方面,在第二方面的某些实现方式中,第一参数的值小于第二参数的值。
结合第二方面,在第二方面的某些实现方式中,确定网络设备发送的广播信息包括针 对第一小区的第一参数和第二参数后,确定第一小区使用的频段包括SUL频段。
根据本申请实施例的通信的方法,通过确定广播信息中包括第一参数和第二参数,就可以确定第一小区使用的频段包括SUL频段,而不需要专门的指示信息,可以节省信令开销。
第三方面,提供了一种终端设备。本申请提供的终端设备具有实现上述方法方面中终端设备行为的功能,其包括用于执行上述方法方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现,或硬件实现,或者通过硬件和软件结合来实现。
在一种可能的设计中,上述装置包括一个或多个处理器和通信单元。所述一个或多个处理器被配置为支持所述装置执行上述方法中相应的功能。例如,根据参数进行小区选择或小区重选。所述通信单元用于支持所述装置与其他设备通信,实现接收和/或发送功能。例如,接收广播信息。
可选的,所述装置还可以包括一个或多个存储器,所述存储器用于与处理器耦合,其保存装置必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起,也可以与处理器分离设置。本申请并不限定。
所述装置可以为智能终端或者可穿戴设备等,所述通信单元可以是收发器,或收发电路。可选的,所述收发器也可以为输入/输出电路或者接口。
所述装置还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。
另一个可能的设计中,上述终端设备,包括收发器、处理器和存储器。该处理器用于控制收发器收发信号,该存储器用于存储计算机程序,该处理器用于从存储器中调用并运行该计算机程序,使得该终端设备执行第一方面或第一方面中任一种可能实现方式中终端设备完成的方法。
第四方面,提供了一种网络设备。本申请提供的网络设备具有实现上述方法方面中网络设备行为的功能,其包括用于执行上述方法方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现,或硬件实现,或者通过硬件和软件结合来实现。
在一种可能的设计中,上述网络设备包括一个或多个处理器和通信单元。所述一个或多个处理器被配置为支持所述网络设备执行上述方法中相应的功能。例如,确定广播信息包括第一参数和第二参数。所述通信单元用于支持所述网络设备与其他设备通信,实现接收和/或发送功能。例如,发送广播信息。
可选的,所述网络设备还可以包括一个或多个存储器,所述存储器用于与处理器耦合,其保存网络设备必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起,也可以与处理器分离设置。本申请并不限定。
所述网络设备可以为基站,gNB或TRP等,所述通信单元可以是收发器,或收发电路。可选的,所述收发器也可以为输入/输出电路或者接口。
所述网络设备还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。
另一个可能的设计中,上述网络设备,包括收发器、处理器和存储器。该处理器用于 控制收发器收发信号,该存储器用于存储计算机程序,该处理器用于从存储器中调用并运行该计算机程序,使得该网络设备执行第二方面或第二方面中任一种可能实现方式中网络设备完成的方法。
第五方面,提供了一种系统,该系统包括上述终端设备和网络设备。
第六方面,提供了一种计算机可读存储介质,用于存储计算机程序,该计算机程序包括用于执行第一方面或第一方面中任一种可能实现方式中的方法的指令。
第七方面,提供了一种计算机可读存储介质,用于存储计算机程序,该计算机程序包括用于执行第二方面或第二方面中任一种可能实现方式中的方法的指令。
第八方面,提供了一种计算机程序产品,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码在计算机上运行时,使得计算机执行上述第一方面或第一方面中任一种可能实现方式中的方法。
第九方面,提供了一种计算机程序产品,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码在计算机上运行时,使得计算机执行上述第二方面及第二方面中任一种可能实现方式中的方法。
附图说明
图1是适用于本申请实施例的SUL小区的示意图;
图2是本申请一实施例提供的通信的方法的示意性框图;
图3是本申请一实施例提供的通信的方法的另一示意性交互图;
图4是本申请实施例提供的通信的方法的再一示意性交互图;
图5是本申请实施例提供的通信的方法的又一示意性框图;
图6是本申请又一实施例提供的通信的方法的示意性交互图;
图7是本申请实施例提供的终端设备的示意图;
图8是本申请实施例提供的网络设备的结构示意图;
图9是本申请实施例提供的通信装置的结构示意图。
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:全球移动通讯(Global System of Mobile communication,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、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,未来5G网络中的终端设备或者未来演进的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讯(Global System of Mobile communication,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(Evolutional 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。
本申请实施例提供了一种通信的方法,该方法可以应用于小区选择或者小区重选。
目前,当终端设备开机或发生无线链路失败等情况时,终端设备将执行小区搜索过程,并尽快选择合适的小区驻留,这个过程称为“小区选择”。终端设备在小区搜索过程中会读取该小区的系统信息,获取到Qrxlevmeas、Qrxlevmin和Qrxlevminoffset等参数,终端设备根据S准则评估该小区是否是合适的小区,一旦找到合适的小区,即,满足S准则的小区,则小区选择过程就完成了。如果该小区不是合适的小区,则终端设备继续进行搜索,直到找到合适的小区并驻留。
S准则公式:Srxlev>0,即小区的S值如果大于0,则说明该小区是合适的小区,即,适合驻留的小区,Srxlev的计算公式是:
Srxlev=Qrxlevmeas-(Qrxlevmin-Qrxlevminoffset)-Pcompensation
其中:
Srxlev:计算得到的小区选择接收电平值;
Qrxlevmeas:终端设备测量得到的接收信号强度值,该值为测量到的参考信号接收功率(Reference Signal Receiving Power,RSRP);
Qrxlevmin:该小区要求的最小接收信号强度值;
Pcompensation:(PEMAX–PUMAX)或0中的较大值,其中PEMAX为终端设备在接入该小区时,系统设定的最大允许发送功率;PUMAX是指根据终端设备等级规定的最大输出功率。
QrxlevminOffset:该参数只有在终端设备正常驻留在一个虚拟专用移动网(Virtual Private Mobile Network,VPMN),周期性搜索一个高优先级的公共陆地移动网络(Public Land Mobile Network,PLMN)进行小区选择评估时才有效,该参数对Qrxlevmin进行一定的偏置。
需要说明的是,由于通信协议版本的演进,S准则公式和Srxlev的计算公式可能会由于某些原因发生改变,这里给出的公式只是例子,并不对公式本身做任何限定。
当终端设备驻留在一个小区后,随着终端设备的移动,终端设备可能需要更换到另一个更高优先级或更好信号的小区驻留,这就是小区重选过程。小区选择是尽快找到一个合 适小区的过程,小区重选是选择更适合小区的过程。为了终端设备的省电,协议规定了测量准则:
对于优先级高于本驻留小区的频率层或系统,终端设备始终对其进行测量;
如果驻留小区的Srxlev<=Sintrasearch,终端设备启动对同频小区的测量,其中,Sintrasearch是同频测量门限值;
如果驻留小区的Srxlev<=Snonintrasearch或Snonintrasearch未配置,终端设备启动对同优先级频率或低优先级频率及系统的测量;
在测量后,终端设备会判断是否执行小区重选到新的小区,重选标准如下:
高优先级频率或系统的重选标准:目标频率小区的Srxlev>Threshx-high,且持续一定的时间,其中,Threshx-high是指从当前服务载频重选到优先级高的频率时的门限值;
低优先级频率或系统的重选标准:驻留小区的Srxlev<Threshserving-low,且持续一定的时间,其中,Threshx-low是指从当前服务载频重选到优先级低的频率时的门限值;
同优先级频率或系统的重选标准:小区重选到同优先级频率中小区基于同频小区重选的级别(Ranking)标准。同频小区重选Ranking标准定义如下,R s为当前驻留小区的ranking值,R n为邻小区的ranking值:
R s=Qmeas_s+Qhyst s,R n=Qmeas_s–Qoffset
其中:
Qhyst:迟滞值,用于防止乒乓重选;
Qmeas_s:终端设备测量得到的驻留小区的接收信号强度值;
Qoffset:对于同频,取值为Qoffsets_n,Qoffsets_n是两个小区接收信号质量要求的差值;对于异频,取值为Qoffsets_n+Qoffsetfrequency,Qoffsetfrequency是两个频点间的频率偏移值。
终端设备会对所有满足小区选择S准则的小区进行ranking值的排序,重选到排序最好的小区。
在当前驻留的小区的系统消息中会广播当前驻留小区和邻区的上面需要的配置参数,从而终端设备能计算得出R s和R n等参数。
需要说明的是,由于通信协议版本的演进,Rs和Rn的计算公式可能会由于某些原因发生改变,这里给出的公式只是例子,并不对公式本身做任何限定。
但是,在当前的标准讨论中,出现了一个新的技术是,小区除了原有的一个上行外,还可以有一个额外的更低频率的上行频段,即增补上行载波(Supplemental Uplink,SUL),终端设备可以通过这个额外的上行频段来发送上行,从而提高上行覆盖,使得上下行覆盖达到一致。
在本申请实施例中,为简洁描述,如果小区使用的频段包括SUL频段,则将该小区称为SUL小区,其他小区称为普通小区。在SUL小区中包括SUL频段和主上行(Uplink,UL)频段,UL频段是普通上行频段,SUL频段和UL频段相异。图1示出了SUL小区的示意图。
从图1中可以看出,SUL小区中的上行覆盖范围包括UL频段和SUL频段,UL上行频段只能覆盖到区域1,SUL频段还可以覆盖到区域2。可以看出,在SUL小区中,由于SUL频段的引入,从而使得小区的下行(Downlink,DL)覆盖范围和上行的覆盖范围几 乎一致。
由于终端设备能力不同,有些终端设备支持SUL传输,有些终端设备不支持SUL传输。在SUL小区中,对于支持SUL传输的终端设备,当位于区域2时,终端设备只能通过SUL频段发起随机接入过程;对于不支持SUL传输的终端设备只能通过UL频段进行上行传输。
需要说明的是,本说明书中的“不支持SUL传输的终端设备”包括终端设备不支持SUL特性,或支持SUL特性但不支持该SUL小区的SUL频段。
在当前标准中没有考虑SUL频段对于小区选择或重选机制的影响,如果继续沿用当前的小区选择或重选机制,无法兼顾支持SUL传输的终端设备和不支持SUL传输的终端设备,会造成终端设备过早重选或过晚重选,从而降低系统性能。比如,不支持SUL传输的终端设备通过前述的方式进行小区重选时,可能会重选到SUL小区,当不支持SUL传输的终端设备在SUL小区的区域2时,是无法成功发起初始接入的,这就是终端设备过早重选造成的后果,会降低系统性能。
本申请实施例提出了一种通信的方法,该方法可以应用于小区选择或小区重选,避免或降低终端设备过早或过晚重选。
图2是本申请一实施例的通信的方法的示意图。
S201,终端设备接收广播信息,该广播信息包括针对第一小区的第一参数和第二参数,其中,第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,所述第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选。
通过本申请实施例,能支持SUL传输的终端设备和不能支持SUL传输的终端设备基于不同的参数进行小区选择或小区重选,能够避免终端设备过早选择或重选,或者过晚选择或重选。
终端设备在进行小区选择或小区重选的过程中,会接收广播信息,该广播信息包括针对第一小区的第一参数和第二参数,用于判断是否选择在第一小区驻留,在第一小区或是否重选在到第一小区,或是否从第一小区重选到其他小区,其中,第一小区可以是终端设备的服务小区,也可以是终端设备的邻小区。
终端设备接收一次广播信息后,该广播信息可以被多次使用,比如,广播信息包括的针对第一小区的第一参数和第二参数,那么在该终端设备的小区选择或者小区重选的整个过程中,或者多次小区重选判断的过程中,都可以多次使用该第一参数和第二参数。
可选地,第一参数用于确定第一小区对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于确定第一小区对不支持SUL传输的终端设备要求的最小接收电平值。
可选地,第一参数用于指示第一小区对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值与所述第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值。此时,可选地,第一小区对不支持SUL传输的终端设备要求的最小接收电平值等于第一参数和第二参数的和。
可选地,第一参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值与第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值,第二参数用于指示第一小区对不支持SUL传输的终端设备要求的最小接收电平值。此时,第 一小区对支持SUL传输的终端设备要求的最小接收电平值等于第二参数与第一参数的差值。
S202,当终端设备支持SUL传输时,终端设备基于第一参数进行小区选择或小区重选,或,当终端设备不支持SUL传输时,终端设备基于第二参数进行小区选择或小区重选。
可选地,当终端设备支持SUL传输时,终端设备根据第一参数计算第一小区的小区选择接收电平值,终端设备基于该电平值进行小区选择或小区重选。
可选地,当终端设备不支持SUL传输时,终端设备根据第二参数计算第一小区的小区选择接收电平值,终端设备基于该电平值进行小区选择或小区重选。
可选地,第一参数的值小于第二参数的值。
接下来,基于以下三种场景,进行详细说明。
场景1
在场景1下:终端设备当前要进行小区选择,可能选择SUL小区,可能选择普通小区。在本申请实施例中,以终端设备根据前述的S准则进行小区选择作为示例性说明。
广播信息中还包括Qrxlevmeas和Qrxlevminoffset等参数用于小区选择,其中Qrxlevmeas和Qrxlevminoffset的含义同前述一样,此处不再赘述。
如图3所示,包括以下三个步骤:
S301,针对小区#A的广播信息,即,终端设备接收网络设备发送的针对小区#A的广播信息,广播信息中包括第一参数和第二参数;
其中,该广播信息是终端设备接收的小区#A的系统信息里的广播信息。
S302,当终端设备支持SUL传输时,通过第一参数计算小区#A的S值;当终端设备不支持SUL传输时,通过第二参数计算小区#A的S值;
S303,基于计算出的小区#A的S值进行小区选择判断。
本申请实施例考虑的是SUL小区对终端设备小区选择或小区重选的影响,虽然终端设备小区选择时小区可能是SUL小区,可能是普通小区,但此处,只考虑SUL小区的情况,即,小区#A是SUL小区。
可选地,第一参数用于确定小区#A对支持SUL传输的终端设备要求的最小接收电平,第二参数用于确定小区#A对不支持SUL传输的终端设备要求的最小接收电平。
作为示例而非限定,第一参数是小区#A对支持SUL传输的终端设备要求的最小接收电平,第二参数是小区#A对不支持SUL传输的终端设备要求的最小接收电平。
作为示例而非限定,第一参数用于指示小区#A对不支持SUL传输的终端设备要求的最小接收电平值与小区#A对支持SUL传输的终端设备要求的最小接收电平值之间的差值,第二参数用于指示小区#A对不支持SUL传输的终端设备要求的最小接收电平值。
作为示例而非限定,第一参数用于指示小区#A对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于指示小区#A对不支持SUL传输的终端设备要求的最小接收电平值与小区#A对支持SUL传输的终端设备要求的最小接收电平值之间的差值。
支持SUL传输的终端设备根据第一参数计算小区#A的小区选择接收电平值Srxlev,即小区#A的S值,然后,该终端设备基于该电平值进行小区选择;不支持终端设备SUL传输的终端设备根据第二参数计算小区#A的小区选择接收电平值Srxlev,即小区#A的S 值,然后,该终端设备基于该电平值进行小区选择。
此外,还可以通过修改S准则公式或选择标准,避免不同类型的终端设备小区选择过早或过晚,或避免选择不到合适的小区,具体地,至少包括以下几种方式。
方式1
支持SUL传输的终端设备可以基于以下修改后的S准则公式计算S值,修改后的S准则公式是:
Srxlev_1=Qrxlevmeas-(Qrxlevmin-Qrxlevminoffset–Offset_1)-Pcompensation
其中,Offset_1是偏差量,其中,偏差量可以是网络设备根据终端设备的能力或者网络设备的配置进行设置,并在系统信息中发送给终端设备,本申请对此不作限定;其他各个参数的含义同前述一样。
对于不支持SUL传输的终端设备,可以使用和现有技术中的S值的计算公式一样,或者,也可以使用修改后的S准则公式计算S值,但是Offset_1是0。
方式2
不支持SUL传输的终端设备可以基于以下修改后的S准则公式计算S值,修改后的S准则公式是:
Srxlev_2=Qrxlevmeas-(Qrxlevmin-Qrxlevminoffset+Offset_2)-Pcompensation
其中,Offset_2是偏差量,其中,偏差量可以是网络设备根据终端设备的能力或者网络设备的配置进行设置,并在系统信息中发送给终端设备,本申请对此不作限定;其他各个参数的含义同前述一样。
对于支持SUL传输的终端设备,可以使用和现有技术中的S值的计算公式一样,或者,也可以使用修改后的S准则公式计算S值,但是Offset_2是0。
方式3
不支持SUL传输的终端设备可以基于以下修改后的S准则公式计算S值,修改后的S准则公式是:
Srxlev_3-Offset_3=Qrxlevmeas-(Qrxlevmin-Qrxlevminoffset)-Pcompensation
其中,Offset_3是偏差量,其中,偏差量可以是网络设备根据终端设备的能力或者网络设备的配置进行设置,并在系统信息中发送给终端设备,本申请对此不作限定;其他各个参数的含义同前述一样。
对于支持SUL传输的终端设备,可以使用和现有技术中的S值的计算公式一样,或者,也可以使用修改后的S准则公式计算S值,但是Offset_3是0。
方式4
对于不支持SUL传输的终端设备,可以修改选择标准:
(Srxlev_4-Offset_4)>0
其中,Offset_4是偏差量,该偏差量可以是网络设备根据终端设备的能力或者网络设备的配置进行设置,并在系统信息中发送给终端设备,本申请对此不作限定。
对于支持SUL传输的终端设备,可以使用和现有技术中小区选择的标准一样,或者,也可以使用上述修改后的小区选择标准,但是Offset_4是0。
以上方式1至方式4只是示例性说明,本申请并未限定与此,其他能够考虑终端设备类型,进行小区选择的方法和过程均落入本申请的保护范围内。
在场景1中,通过在SUL小区中,针对不同类型的终端设备计算S值,可以有效地避免在SUL小区中无法兼顾支持SUL传输的终端设备和不支持SUL传输的终端设备,从而避免过早选择或过晚选择,或避免选择到不合适的小区,从而提升系统性能。
接下来考虑场景2和场景3的情况。
场景2
在场景2下,终端设备当前驻留在SUL小区,可能需要重选到其他SUL小区或其他普通小区。
如果终端设备能支持SUL传输:在区域1和区域2都可以继续驻留到本小区;
如果终端设备不能支持SUL传输:在区域1可以不重选,在区域2需要重选到其他小区,因为在区域2上,终端设备只能通过SUL传输。
场景3
在场景3下,终端设备当前驻留在普通小区,可能需要重选到SUL小区,包括:
对于SUL邻区,即终端设备当前的服务小区的邻区是SUL小区,需要考虑SUL频段对终端设备进行小区重选的影响。
场景2和场景3都是针对小区重选时的情况,可以一块说明。
需要说明的是,以场景2为例,终端设备驻留在SUL小区,根据通过场景1中的方式计算出在服务小区的S值,启动测量准则,具体的测量准则在下面描述。其中,终端设备在驻留小区的S值的计算方式同场景1中类似,比如,根据上述场景1中的方式1至方式4计算终端设备在服务小区的S值,为简洁描述,此处不再赘述。
需要说明的是,终端设备在小区重选时,计算服务小区的S值的方法同场景1中类似,此处不再赘述。
在本申请实施例中,以终端设备根据前述中目前小区重选的方式作为示例性说明。
终端设备当前驻留在一个小区,记为小区#B,且要进行小区重选。终端设备接收小区#B发送的系统信息里包含的广播信息,其中包括针对小区#B的广播信息和针对邻区的广播信息,在小区选择时,接收过针对小区#B的广播信息,在终端设备进行小区重选时,可以再次根据先前接收的针对小区#B的广播信息计算Rs值,其中,Rs为当前服务小区小区#B的ranking值。终端设备还会接收邻区的广播信息。本申请实施例考虑的是SUL小区对小区选择或重选的影响,故在此,对于邻区,只考虑邻区是SUL小区的情况。
终端设备确定服务小区或邻区是SUL小区的方式有很多,可选地,终端设备在确定广播信息包括针对第一小区的第一参数和第二参数后,确定第一小区使用的频段包括SUL频段,即该第一小区该邻区是SUL小区,这样的好处是不需要专门的指示信息,节省了信令开销;或者,终端设备接收到针对邻区第一小区的广播信息,广播信息包括指示该邻区是SUL的指示信息。
如前面所述,小区#B是终端设备的服务小区,终端设备会接收服务小区的广播信息,该广播信息中包括针对第一小区的第一参数和第二参数,此处,第一小区是邻区的情况。结合图4进行说明。
S401,接收小区#B的广播信息,即,终端设备接收服务小区的广播信息。
可选地,广播信息包括针对与小区#B频率相同的邻区的第一参数#1(即,第一参数的一例)和第二参数#1(即,第二参数的一例),或者,广播信息包括针对与小区#B频 率相异的邻区的第一参数#2(即,第一参数的一例)和第二参数#2(即,第二参数的一例),其中,第一参数#1用于确定频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#1用于确定频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值,第一参数#2用于确定频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#2用于确定频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值。
可选地,广播信息中包括针对与小区#B频率相同的邻区的第一参数#1(即,第一参数的一例)和第二参数#1(即,第二参数的一例),还包括针对与小区#B频率相异的邻区的第一参数#2(即,第一参数的一例)和第二参数#2(即,第二参数的一例),其中,第一参数#1用于确定频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#1用于确定频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值,第一参数#2用于确定频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#2用于确定频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值。
作为示例而非限定,第一参数#1是频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#1是频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值。第一参数#2用于确定频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#2用于确定频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值。
作为示例而非限定,第一参数#1是频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#1是频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值与频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值之间的差,第一参数#2是频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#2是频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值与频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值之间的差。
作为示例而非限定,第一参数#1是频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值与频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值的差值,第二参数#1是频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值,第一参数#2是频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值与频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值的差值,第二参数#2是频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值。
可选地,某个频率下的邻区并不是都是SUL小区,也不是都是普通小区,即部分是SUL小区,部分是普通小区,广播信息中还可以包括每个频率下的SUL小区列表的信息,或普通小区列表的信息,或小区列表下的小区是否是SUL小区的指示信息,从而支持SUL传输的终端设备能据此选择第一参数#1或第一参数#2来使用。
可选地,对于同一个频率下的多个不同的SUL小区,考虑到其覆盖范围的需求不同,则基站的下行发射功率可能不同。此时,可以不同的小区设置不同的第一参数和/或第二参数,即第一参数和/或第二参数是小区级的。即每个频率下一个小区列表,小区列表里的每个小区对应第一参数和/或第二参数。其中,第一参数用于支持SUL传输的终端设备 所进行的小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区重选。第一参数#1和第二参数#1同场景1中的第一参数和第二参数相似,此处不再赘述。
可选地,为了获取邻区的信息,基站之间交互第一参数和/或第二参数配置,比如在建立基站之间接口时。
S402,当终端设备支持SUL传输时,使用对应邻区频率的第一参数#1或第一参数#2计算邻区的S值;当终端设备不支持SUL传输时,使用对应邻区频率的第二参数#1或第二参数#2计算邻区的S值。
对应邻区频率,即,如果邻区是与小区#B的频率相同,则使用第一参数#1或第二参数#1,如果邻区是与小区#B的频率相异,则使用第一参数#2或第二参数#2。
具体地,第一参数#2和第一参数#1的功能相似,即第一参数#1或第一参数#2用于支持SUL传输的终端设备所进行的小区选择或小区重选;第二参数#2或第二参数#1的功能相似,即第二参数#1或第二参数#2用于不支持SUL传输的终端设备所进行的小区选择或小区重选。第一参数#1和第二参数#1是针对与小区#B频率相同的小区,第一参数#2和第二参数#2是针对与小区#B频率相异的小区。关于S值的计算,同场景1相似,此处不再赘述。
S403,基于计算出的邻区的S值进行小区重选判断。
可选地,场景1的S值的计算方式也适合场景2和场景3。
可选地,终端设备是不支持SUL传输的终端设备,如果小区#B是SUL小区,小区重选的测量准则是:
如果服务小区的Srxlev<=Sintrasearch+Offset,终端设备启动对同频小区的测量;
如果服务小区的Srxlev<=Snonintrasearch+Offset或Snonintrasearch未配置,终端设备启动对同优先级频率或低优先级频率及系统的测量;
其中,Offset是预设的偏差量,该预设的偏差量可以是网络设备根据终端设备的能力或者网络设备的配置进行设置,本申请对此不作限定;其他参数的含义同前述一样,此处不再赘述。
小区重选时,对于SUL邻区,重选标准如下:
高优先级频率或系统的重选标准:目标频率小区的Srxlev>Threshx-high+Offset,且在小区重选时间内持续;
低优先级频率或系统的重选标准(以服务小区也是SUL小区为例):服务小区的Srxlev<Threshserving-low+Offset-s,且目标频率小区的Srxlev>Threshx-low+Offset-n,且在小区重选时间内持续。
其中,Offset、Offset-s、Offset-n都是偏差量,Offset-s、Offset-n分别是服务小区和目标频率小区的偏差量。偏差量可以是网络设备根据终端设备的能力或者网络设备的配置进行设置,本申请对此不作限定;其他参数的含义同前述一样,此处不再赘述。
支持SUL传输的终端设备可以基于现有的方式进行小区重选,或者上述的偏差量设置为0。
通过上述方式,小区重选的测量准则和重选标准都考虑了不同类型的终端设备,可以避免终端设备过早或过晚的重选,从而提高系统性能。
可选地,关于同优先级的重选标准,如前述,对于Ranking排序,需要考虑SUL频 段的影响。因为,对于不支持SUL传输的终端设备,尽管测量的SUL服务小区或SUL邻区的下行信号很好,但由于上行的原因,可能仍在需要重选的边缘,因此对于SUL小区计算的Ranking值需要进行一些校正,然后再与其他小区一起进行排序,从而使得其排序向后调整。
可选地,R s=Qmeas_s-Offset_sul+Qhyst s,R n=Qmeas_s-Offset_sul–Qoffset
其中,Offset_sul可以使用与S准则值一样的Offset,也可以是第二参数和第一参数的差值,也可以是网络配置的专用的偏差量。
对于支持SUL传输的终端设备,可以认为SUL小区的上下行覆盖是一致的,直接使用原有的公式即可,或者也使用上面的公式,但是Offset_sul取值为0。
可选地,关于同优先级的重选标准,对于SUL小区计算的Ranking值进行校正,还有另外一种方式,即对于支持SUL传输的终端设备,对于SUL小区计算的Ranking值需要进行一些校正,然后再与其他小区一起进行排序,从而使得其排序向前调整。可选地,Rs=Qmeas_s+Offset_sul+Qhysts,Rn=Qmeas_s+Offset_sul–Qoffset
其中,Offset_sul可以使用与S准则值一样的Offset,也可以是第二参数和第一参数的差值,也可以是网络配置的专用的偏差量。
对于不支持SUL传输的终端设备,直接使用原有的公式即可,或者也使用上面的公式,但是Offset_sul取值为0。
可选地,Ranking排序分为两个组,分别用于SUL小区的排序和普通小区的排序,优先选择SUL小区,或优先选择普通小区,或者网络配置优先选择哪个组下的小区;在同一个组内如果有多个小区,则选择排序最高的小区。
针对场景2,当终端设备驻留在SUL小区,并进行小区选择时,关于终端设备在驻留小区中S值的计算同场景1中相似,此处不再赘述。
需要说明的是,在本申请实施例中,“不支持SUL传输的终端设备”包括终端设备不支持SUL特性,或支持SUL特性但不支持该SUL小区的SUL频段。
根据本申请实施例的通信的方法,通过终端设备接收的广播信息中包括第一参数和第二参数,第一参数用于支持SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选,从而,能够兼顾两种类型的终端设备,避免终端设备过早选择或重选,或者过晚选择或重选,进而,能够提高系统性能。
以上结合图2至图4详细说明了本申请实施例的小区选择或小区重选方法。以下结合图5详细说明在SUL小区中,终端设备选择哪个上行频段发起随机接入。
S501,测量接收第一小区的信号强度值;
S502,判断通过哪个上行频段发起随机接入。
当第一小区是终端设备的服务小区,且是SUL小区,且终端设备支持SUL传输时,包括:当接收信号强度值小于预设的门限时,终端设备在发起初始接入时通过第一小区的SUL频段发起随机接入过程;或者,当接收信号强度值不小于预设的门限时,终端设备在发起初始接入时通过第一小区的主上行频段发起随机接入过程。
可选地,预设的第一门限可以是第二参数,该第二参数同小区选择或小区重选时的第二参数一样。这样可以减少信令开销。
可选地,预设的门限还可以是与第一参数或第二参数无关,是个独立的门限,这样可以提高灵活性,具体取值可以基于网络设备自身的配置或终端设备的能力确定,本申请不作限定。
可选地,终端设备通过主上行频段发起随机接入过程失败的次数大于预设的第一阈值时,终端设备通过SUL频段发起随机接入过程。
由于门限的配置不合理、或者随机接入时冲突严重等,终端设备通过主上行频段发起随机接入,可能会多次失败,当超过预设的第一阈值时,终端设备通过SUL频段发起随机接入过程,这样可以提高随机接入的成功率。其中,预设的第一阈值可以是网络配置,也可以是根据经验配置,本申请对此不作限定。
此外,当终端设备发起随机接入失败的总次数达到预设的第二阈值时,可以被认为是发生了无线链路失败,其中,失败的总次数可以是终端设备通过SUL频段和主上行频段发起随机接入失败次数的总和。
在一种实施方式中,当第一小区是终端设备的服务小区,且是SUL小区,且终端设备不支持SUL传输时,包括:不支持SUL传输的终端设备在需要发起初始接入时,首先判断如果当前驻留的小区(第一小区)的信号强度小于一个门限,则终端设备不在第一小区发起随机接入,而是发起小区选择过程,并更换服务小区后,再发起初始接入。这种方式会避免终端设备多次尝试随机接入,多次失败。
可选地,不支持SUL传输的终端设备与支持SUL传输的终端设备使用一样的小区选择或小区重选参数/机制,但是,不支持SUL传输的终端设备在需要发起初始接入时,首先判断如果当前驻留的小区的信号强度小于一个门限(比如,RAN1工作组定义的门限,或一个新的门限),则终端设备发起小区重选过程,并更换服务小区后,再发起初始接入。这种方式会避免终端设备多次尝试随机接入,多次失败,且比较简单。
以上结合图2至图5从终端设备角度详细说明了本申请实施例的通信的方法。以下结合图6从网络设备角度详细说明本申请实施例的通信的方法。
图6是本申请另一实施例的通信的方法的示意图。
601,网络设备发送广播信息,该广播信息包括针对第一小区的第一参数和第二参数,其中,第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,所述第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选。
通过本申请实施例,网络设备发送包括针对第一小区的第一参数和第二参数的广播信息,可以使得支持SUL传输的终端设备和不能支持SUL传输的终端设备基于不同的参数进行小区选择或小区重选,能够避免终端设备过早选择或重选,或者过晚选择或重选。
终端设备在进行小区选择或小区重选的过程中,网络设备会发送广播信息,该广播信息包括针对第一小区的第一参数和第二参数,用于终端设备判断是否选择驻留在第一小区或是否重选在第一小区,其中,第一小区可以是终端设备的服务小区,也可以是终端设备的邻小区。
网络设备发送一次广播信息后,该广播信息可以被终端设备多次使用,比如,广播信息包括的针对第一小区的第一参数和第二参数,那么在该终端设备的小区选择或者小区重选的整个过程中,或者多次小区重选的过程中,都可以多次被终端设备使用该第一参数和第二参数。
可选地,第一参数用于确定第一小区对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于确定第一小区对不支持SUL传输的终端设备要求的最小接收电平值。
可选地,第一参数是第一小区对支持SUL传输的终端设备要求的最小接收电平,第二参数是第一小区对支持SUL传输的终端设备电平与第一小区对不支持SUL传输的终端设备要求的最小接收电平值之间的差。
可选地,第一参数是第一小区对不支持SUL传输的终端设备要求的最小接收电平与第一小区对支持SUL传输的终端设备要求的最小接收电平值的差值,第二参数是第一小区对不支持SUL传输的终端设备要求的最小接收电平。
可选地,第一参数的值小于第二参数的值。
接下来,基于以下三种场景,进行详细说明。
场景1
在场景1下:终端设备当前要进行小区选择,可能选择SUL小区,可能选择普通小区。在本申请实施例中,以终端设备根据前述的S准则进行小区选择作为示例性说明。
网络设备发送的广播信息还包括Qrxlevmeas、Qrxlevmin和Qrxlevminoffset等参数用于小区选择,其中Qrxlevmeas、Qrxlevmin和Qrxlevminoffset的含义同前述一样,此处不再赘述。
网络设备发送针对小区#A的广播信息,广播信息中包括第一参数和第二参数;
本申请实施例考虑的是SUL小区对终端设备小区选择或小区重选的影响,虽然终端设备小区选择时小区可能是SUL小区,可能是普通小区,但此处,只考虑SUL小区的情况,即,小区#A是SUL小区。
可选地,第一参数用于确定小区#A对支持SUL传输的终端设备要求的最小接收电平值,第二参数用于确定小区#A对不支持SUL传输的终端设备要求的最小接收电平值。
作为示例而非限定,第一参数是小区#A对支持SUL传输的终端设备要求的最小接收电平值,第二参数是小区#A对不支持SUL传输的终端设备要求的最小接收电平值。
作为示例而非限定,第一参数是小区#A对支持SUL传输的终端设备要求的最小接收电平值,第二参数是小区#A对支持SUL传输的终端设备要求的最小接收电平值与小区#A对不支持SUL传输的终端设备要求的最小接收电平值之间的差。
作为示例而非限定,第一参数是小区#A对不支持SUL传输的终端设备要求的最小接收电平值与小区#A对支持SUL传输的终端设备要求的最小接收电平值的差值,第二参数是小区#A对不支持SUL传输的终端设备要求的最小接收电平值。
在场景1中,通过在SUL小区中,网络设备发送的广播信息包括第一参数和第二参数,第一参数用于支持SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选,可以有效地避免在SUL小区中,无法兼顾支持SUL传输的终端设备和不支持SUL传输的终端设备,从而避免过早选择或过晚选择,从而提升系统性能。
接下来考虑场景2和场景3的情况。
场景2
在场景2下,终端设备当前驻留在SUL小区,可能需要重选到其他SUL小区或其他普通小区。
如果终端设备能支持SUL传输:在区域1和区域2都可以继续驻留到本小区;
如果终端设备不能支持SUL传输:在区域1可以不重选,在区域2需要重选到其他小区,因为在区域2上,终端设备只能通过SUL传输。
场景3
在场景3下,终端设备当前驻留在普通小区,可能需要重选到SUL小区,包括:
对于SUL邻区,即终端设备当前的服务小区的邻区是SUL小区,需要考虑SUL频段对终端设备进行小区重选的影响。
场景2和场景3都是针对小区重选时的情况,可以一块说明。
需要说明的是,以场景2中为例,终端设备驻留在SUL小区,终端设备在小区驻留后,根据计算出的S值,启动测量准则,具体的测量准则在下面描述。其中,终端设备在驻留小区和邻区的S值的计算方法同场景1中小区选择时计算S值的方法一样,包括S301到S303步骤以及方式1到方式4等,此处不再赘述。
在本申请实施例中,以终端设备根据前述中目前小区重选的方式作为示例性说明。
终端设备当前驻留在一个小区,记为小区#B,且要进行小区重选。网络设备在终端设备小区选择时,发送过针对小区#B的广播信息,故,该广播信息可以用于在终端设备进行小区重选时,再次计算Rs值,其中,Rs为当前服务小区小区#B的ranking值。网络设备发送的广播信息还包括邻区的广播信息。本申请实施例考虑的是SUL小区对小区选择或重选的影响,故在此,只考虑邻区是SUL小区的情况。
可选地,当确定网络设备发送的广播信息包括针对第一小区的第一参数和第二参数后,确定第一小区使用的频段包括SUL频段,即该邻区是SUL小区;或者,网络设备发送针对邻区的广播信息,广播信息包括指示该邻区是SUL的指示信息。
可选地,广播信息中包括针对与小区#B频率相同的邻区的第一参数#1和第二参数#1,还包括针对与小区#B频率相异的邻区的第一参数#2和第二参数#2,其中,第一参数#1用于确定频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#1用于确定频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值,第一参数#2用于确定频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#2用于确定频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值。
作为示例而非限定,第一参数#1是频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#1是频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值。第一参数#2用于确定频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#2用于确定频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值。
作为示例而非限定,第一参数#1是频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#1是频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值与频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值之间的差,第一参数#2是频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值,第二参数#2是频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值与频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值之间的差。
作为示例而非限定,第一参数#1是频率相同的邻区对不支持SUL传输的终端设备要 求的最小接收电平值与频率相同的邻区对支持SUL传输的终端设备要求的最小接收电平值的差值,第二参数#1是频率相同的邻区对不支持SUL传输的终端设备要求的最小接收电平值,第一参数#2是频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值与频率相异的邻区对支持SUL传输的终端设备要求的最小接收电平值的差值,第二参数#2是频率相异的邻区对不支持SUL传输的终端设备要求的最小接收电平值。
可选地,某个频率下的邻区并不是都是SUL小区,也不是都是普通小区,即部分是SUL小区,部分是普通小区,广播信息中还可以包括每个频率下的SUL小区列表的信息,或普通小区列表的信息,或小区列表下的小区是否是SUL小区的指示信息,从而支持SUL传输的终端设备能据此选择第一参数#1或第一参数#2来使用。
可选地,对于同一个频率下的多个不同的SUL小区,考虑到其覆盖范围的需求不同,则基站的下行发射功率可能不同。此时,可以不同的小区设置不同的第一参数和/或第二参数,即第一参数和/或第二参数是小区级的。即每个频率下一个小区列表,小区列表里的每个小区对应第一参数和/或第二参数。其中,第一参数用于支持SUL传输的终端设备所进行的小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区重选。第一参数#1和第二参数#1同场景1中的第一参数和第二参数相似,此处不再赘述。
可选地,为了获取邻区的信息,基站之间交互第一参数和/或第二参数配置,比如在建立基站之间接口时。
需要说明的是,第一参数#2和第一参数#1的功能相似,即第一参数#1或第一参数#2用于支持SUL传输的终端设备所进行的小区选择或小区重选;第二参数#2或第二参数#1的功能相似,即第二参数#1或第二参数#2用于不支持SUL传输的终端设备所进行的小区选择或小区重选。第一参数#1和第二参数是针对与小区#B频率相同的小区,第一参数#2和第二参数#2是针对与小区#B频率相异的小区。
根据本申请实施例的通信的方法,通过网络设备发送的广播信息中包括第一参数和第二参数,第一参数用于支持SUL传输的终端设备所进行的小区选择或小区重选,第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选,从而,能够兼顾两种类型的终端设备,避免终端设备过早选择或重选,或者过晚选择或重选,进而,能够提高系统性能。
以上结合图2至图6详细说明了本申请实施例的通信的方法。以下结合图7至图9详细说明本申请实施例的通信装置。
图7是本申请实施例提供的一种终端设备的结构示意图。该终端设备可适用于图1所示出的小区,执行上述方法实施例中终端设备的功能。为了便于说明,图7仅示出了终端设备的主要部件。如图7所示,终端设备70包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理,以及对整个终端设备进行控制,执行软件程序,处理软件程序的数据,例如用于支持终端设备执行上述方法实施例中所描述的动作,如,基于第一参数进行小区选择或小区重选等。存储器主要用于存储软件程序和数据,例如存储上述实施例中所描述指示信息与组合信息的对应关系等。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器,主要用于收发电磁波形式的射频信号。输入输出装置,例如触摸屏、显示屏,键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后,处理器可以读取存储单元中的软件程序,解释并执行软件程序的指令,处理软件程序的数据。当需要通过无线发送数据时,处理器对待发送的数据进行基带处理后,输出基带信号至射频电路,射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时,射频电路通过天线接收到射频信号,将射频信号转换为基带信号,并将基带信号输出至处理器,处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解,为了便于说明,图7仅示出了一个存储器和一个处理器。在实际的终端设备中,可以存在多个处理器和多个存储器。存储器也可以称为存储介质或者存储设备等,本申请实施例对此不做限定。
作为一种可选的实现方式,处理器可以包括基带处理器和中央处理器,基带处理器主要用于对通信协议以及通信数据进行处理,中央处理器主要用于对整个终端设备进行控制,执行软件程序,处理软件程序的数据。图7中的处理器可以集成基带处理器和中央处理器的功能,本领域技术人员可以理解,基带处理器和中央处理器也可以是各自独立的处理器,通过总线等技术互联。本领域技术人员可以理解,终端设备可以包括多个基带处理器以适应不同的网络制式,终端设备可以包括多个中央处理器以增强其处理能力,终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中,也可以以软件程序的形式存储在存储单元中,由处理器执行软件程序以实现基带处理功能。
在本申请实施例中,可以将具有收发功能的天线和控制电路视为终端设备70的收发单元701,例如,用于支持终端设备执行如图2部分所述的接收功能功能。将具有处理功能的处理器视为终端设备70的处理单元702。如图7所示,终端设备70包括收发单元701和处理单元702。收发单元也可以称为收发器、收发机、收发装置等。可选的,可以将收发单元701中用于实现接收功能的器件视为接收单元,将收发单元701中用于实现发送功能的器件视为发送单元,即收发单元701包括接收单元和发送单元,接收单元也可以称为接收机、输入口、接收电路等,发送单元可以称为发射机、发射器或者发射电路等。
处理器702可用于执行该存储器存储的指令,以控制收发单元701接收信号和/或发送信号,完成上述方法实施例中终端设备的功能。作为一种实现方式,收发单元701的功能可以考虑通过收发电路或者收发的专用芯片实现。
图8是本申请实施例提供的一种网络设备的结构示意图,如可以为基站的结构示意图。如图8所示,该基站可应用于如图1所示的系统中,执行上述方法实施例中网络设备的功能。基站80可包括一个或多个射频单元,如远端射频单元(remote radio unit,RRU)801和一个或多个基带单元(baseband unit,BBU)(也可称为数字单元,digital unit,DU)802。所述RRU 801可以称为收发单元、收发机、收发电路、或者收发器等等,其可以包括至少一个天线8011和射频单元8012。所述RRU 801部分主要用于射频信号的收发以及射频信号与基带信号的转换,例如用于向终端设备发送上述实施例中所述的信令消息。所述BBU 802部分主要用于进行基带处理,对基站进行控制等。所述RRU 801与BBU 802可以是物理上设置在一起,也可以物理上分离设置的,即分布式基站。
所述BBU 802为基站的控制中心,也可以称为处理单元,主要用于完成基带处理功 能,如信道编码,复用,调制,扩频等等。例如所述BBU(处理单元)802可以用于控制基站执行上述方法实施例中关于网络设备的操作流程。
在一个实例中,所述BBU 802可以由一个或多个单板构成,多个单板可以共同支持单一接入指示的无线接入网(如LTE网),也可以分别支持不同接入制式的无线接入网(如LTE网,5G网或其他网)。所述BBU 802还包括存储器8021和处理器8022,所述存储器8021用于存储必要的指令和数据。例如存储器8021存储上述实施例中的码本索引与预编码矩阵的对应关系。所述处理器8022用于控制基站进行必要的动作,例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器8021和处理器8022可以服务于一个或多个单板。也就是说,可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路
图9给出了一种通信装置900的结构示意图。装置900可用于实现上述方法实施例中描述的方法,可以参见上述方法实施例中的说明。所述通信装置900可以是芯片,网络设备(如基站),终端设备或者其他网络设备等。
所述通信装置900包括一个或多个处理器901。所述处理器901可以是通用处理器或者专用处理器等。例如可以是基带处理器、或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理,中央处理器可以用于对通信装置(如,基站、终端、或芯片等)进行控制,执行软件程序,处理软件程序的数据。所述通信装置可以包括收发单元,用以实现信号的输入(接收)和输出(发送)。例如,通信装置可以为芯片,所述收发单元可以是芯片的输入和/或输出电路,或者通信接口。所述芯片可以用于终端或基站或其他网络设备。又如,通信装置可以为终端或基站或其他网络设备,所述收发单元可以为收发器,射频芯片等。
所述通信装置900包括一个或多个所述处理器901,所述一个或多个处理器901可实现图2至图6所示各实施例中网络设备或者终端设备的方法。
在一种可能的设计中,所述通信装置900包括用于生成下行控制信息DCI的部件(means),以及用于发送DCI的部件(means)。可以通过一个或多个处理器来实现所述生成DCI的means以及发送DCI的means的功能。例如可以通过一个或多个处理器生成所述DCI,通过收发器、或输入/输出电路、或芯片的接口发送所述DCI。所述指示信息可以参见上述方法实施例中的相关描述
在一种可能的设计中,所述通信装置900包括用于生成指示信息和QCL信息的部件(means),以及用于发送所述指示信息和QCL信息的部件(means)。所述指示信息和QCL信息可以参见上述方法实施例中的相关描述。例如可以通过一个或多个处理器生成所述指示信息和QCL信息,通过收发器、或输入/输出电路、或芯片的接口发送所述指示信息和QCL信息。可参照上述方法实施例中的描述,可以通过DCI发送指示信息和QCL信息,也可以通过高层信令,如RRC信令发送QCL信息,而通过DCI发送指示信息。
在一种可能的设计中,所述通信装置900包括用于接收下行控制信息DCI的部件(means)以及用于确定DMRS天线端口的部件(means)。所述DCI以及如何确定DMRS天线端口可以参见上述方法实施例中的相关描述。例如可以通过收发器、或输入/输出电路、或芯片的接口接收所述DCI,通过一个或多个处理器基于所述DCI确定DMRS天线端口,进而解调接收信号。
在一种可能的设计中,所述通信装置900包括用于接收指示信息和QCL信息的部件(means),以及用于用于确定DMRS天线端口的部件(means)。所述指示信息和QCL信息,以及如何基于指示信息和QCL信息确定DMRS天线端口,可以参照上述方法实施例中的相关描述。例如可以通过收发器、或输入/输出电路、或芯片的接口接收所述指示信息和QCL信息,通过一个或多个处理器基于指示信息和QCL确定DMRS天线端口,进而解调接收信号。
可选的,处理器901除了实现图2至图6所示各实施例的方法,还可以实现其他功能。
可选的,一种设计中,处理器901也可以包括指令903,所述指令可以在所述处理器上被运行,使得所述通信装置900执行上述方法实施例中描述的方法。
在又一种可能的设计中,通信装置900也可以包括电路,所述电路可以实现前述方法实施例中的功能。
在又一种可能的设计中所述通信装置900中可以包括一个或多个存储器902,其上存有指令904,所述指令可在所述处理器上被运行,使得所述通信装置900执行上述方法实施例中描述的方法。可选的,所述存储器中还可以存储有数据。可选的处理器中也可以存储指令和/或数据。例如,所述一个或多个存储器902可以存储上述实施例中所描述的指示信息与组合信息的对应关系,或,所述组合信息相关的参数,或者上述实施例中所涉及的相关的参数或表格等。所述处理器和存储器可以单独设置,也可以集成在一起。
在又一种可能的设计中,所述通信装置900还可以包括收发单元905以及天线906。所述处理器901可以称为处理单元,对通信装置(终端或者基站)进行控制。所述收发单元905可以称为收发机、收发电路、或者收发器等,用于通过天线906实现通信装置的收发功能。
应理解,在本申请实施例中的处理器可以是中央处理单元(Central Processing Unit,CPU),该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的随机存取存储器(random access memory,RAM)可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM,DR RAM)。
上述实施例,可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时,上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质。半导体介质可以是固态硬盘。
应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定
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 (18)

  1. 一种通信的方法,其特征在于,所述方法包括:
    终端设备接收广播信息,所述广播信息包括针对第一小区的第一参数和第二参数,其中,所述第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,所述第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选;
    当所述终端设备支持SUL传输时,所述终端设备基于所述第一参数进行小区选择或小区重选,或
    当所述终端设备不支持SUL传输时,所述终端设备基于所述第二参数进行小区选择或小区重选。
  2. 根据权利要求1所述的方法,其特征在于,
    所述第一参数用于确定所述第一小区对支持SUL传输的终端设备要求的最小接收电平,
    所述第二参数用于确定所述第一小区对不支持SUL传输的终端设备要求的最小接收电平。
  3. 根据权利要求1或2所述的方法,其特征在于,
    所述第一参数用于指示所述第一小区对支持SUL传输的终端设备要求的最小接收电平值,所述第二参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者
    所述第一参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值与所述第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值,所述第二参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者
    所述第一参数用于指示所述第一小区对支持SUL传输的终端设备要求的最小接收电平值,所述第二参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值与所述第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值。
  4. 根据权利要求1至3中任一项所述的方法,其特征在于,所述当终端设备支持SUL传输时,所述终端设备基于所述第一参数进行小区选择或小区重选,包括:
    所述终端设备根据所述第一参数计算所述第一小区的小区选择接收电平值,所述终端设备基于所述电平值进行小区选择或小区重选;
    所述当终端设备不支持SUL传输时,所述终端设备基于所述第二参数进行小区选择或小区重选,包括:
    所述终端设备根据所述第二参数计算所述第一小区的小区选择接收电平值,所述终端设备基于所述电平值进行小区选择或小区重选。
  5. 根据权利要求1至4中任一项所述的方法,其特征在于,所述第一小区是所述终端设备的服务小区或邻小区。
  6. 根据权利要求1或2所述的方法,其特征在于,所述第一参数的值小于所述第二参数的值。
  7. 根据权利要求1至6中任一项所述的方法,其特征在于:
    所述终端设备在确定所述广播信息包括针对所述第一小区的第一参数和第二参数后,确定所述第一小区使用的频段包括SUL频段。
  8. 根据权利要求1至7中任一项所述的方法,其特征在于,所述方法还包括:
    测量所述第一小区的接收信号强度;
    当所述第一小区是所述终端设备的服务小区,且所述终端设备支持SUL传输时,包括:
    当所述接收信号强度小于预设的门限时,所述终端设备在发起初始接入时通过所述第一小区的SUL频段发起随机接入过程;或者
    当所述接收信号强度不小于预设的门限时,所述终端设备在发起初始接入时通过所述第一小区的主上行频段发起随机接入过程。
  9. 根据权利要求8所述的方法,其特征在于,所述终端设备通过主上行频段发起随机接入过程,包括:
    所述终端设备通过所述主上行频段发起随机接入过程失败的次数大于预设的第一阈值时,所述终端设备通过所述SUL频段发起随机接入过程。
  10. 一种通信的方法,其特征在于,所述方法包括:
    网络设备发送广播信息,所述广播信息包括针对第一小区的第一参数和第二参数,其中,所述第一参数用于支持增补上行载波SUL传输的终端设备所进行的小区选择或小区重选,所述第二参数用于不支持SUL传输的终端设备所进行的小区选择或小区重选。
  11. 根据权利要求10所述的方法,其特征在于,
    所述第一参数用于确定所述第一小区对支持SUL传输的终端设备要求的最小接收电平,
    所述第二参数用于确定所述第一小区对不支持SUL传输的终端设备要求的最小接收电平。
  12. 根据权利要求10或11所述的方法,其特征在于,
    所述第一参数用于指示所述第一小区对支持SUL传输的终端设备要求的最小接收电平值,所述第二参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者
    所述第一参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值与所述第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值,所述第二参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值;或者
    所述第一参数用于指示所述第一小区对支持SUL传输的终端设备要求的最小接收电平值,所述第二参数用于指示所述第一小区对不支持SUL传输的终端设备要求的最小接收电平值与所述第一小区对支持SUL传输的终端设备要求的最小接收电平值之间的差值。
  13. 根据权利要求10至12中任一项所述的方法,其特征在于,所述第一小区是所述终端设备的服务小区或邻小区。
  14. 根据权利要求10或11所述的方法,其特征在于,所述第一参数的值小于所述第二参数的值。
  15. 根据权利要求10至14中任一项所述的方法,其特征在于:
    确定所述网络设备发送的广播信息包括针对所述第一小区的第一参数和第二参数后,确定所述第一小区使用的频段包括SUL频段。
  16. 一种通信装置,其特征在于,用于执行如权利要求1至15中任一项所述的方法。
  17. 一种通信装置,其特征在于,包括:
    存储器,用于存储计算机程序;
    处理器,用于执行所述存储器中存储的计算机程序,以使得所述装置执行如权利要求1至15中任一项所述的方法。
  18. 一种可读存储介质,包括程序或指令,当所述程序或指令在计算机上运行时,如权利要求1至15中任意一项所述的方法被执行。
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