WO2019096073A1 - 一种随机接入方法及装置 - Google Patents

一种随机接入方法及装置 Download PDF

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Publication number
WO2019096073A1
WO2019096073A1 PCT/CN2018/114901 CN2018114901W WO2019096073A1 WO 2019096073 A1 WO2019096073 A1 WO 2019096073A1 CN 2018114901 W CN2018114901 W CN 2018114901W WO 2019096073 A1 WO2019096073 A1 WO 2019096073A1
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WIPO (PCT)
Prior art keywords
random access
uplink carrier
uplink
information
initiates
Prior art date
Application number
PCT/CN2018/114901
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English (en)
French (fr)
Inventor
王宇晨
于海凤
曹振臻
王学龙
Original Assignee
华为技术有限公司
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Publication of WO2019096073A1 publication Critical patent/WO2019096073A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a random access method and apparatus.
  • the 5 Generation Mobile Communication Technology (5G) system introduces a high frequency band greater than 6 gigahertz (GHz) for communication.
  • GHz gigahertz
  • the transmission power of the terminal device is low, so that when the terminal device is in the cell edge region and the high frequency uplink carrier is used to transmit signals to the base station, the transmission loss is high and the penetration capability is high in the transmission process. It is weak. Therefore, the base station may not be able to receive the signal sent by the terminal device, but the terminal device may receive the signal transmitted by the base station through the high-frequency downlink (DL). This has the problem of asymmetric coverage of the uplink and the downlink.
  • DL high-frequency downlink
  • the 5G system introduces at least one low frequency band, such as the Long Term Evolution (LTE) frequency band, for assisting the transmission of uplink data in the terminal device.
  • LTE Long Term Evolution
  • the original high frequency uplink carrier is referred to as a primary uplink (Primary Uplink PUL)
  • the newly introduced low frequency uplink carrier is referred to as a secondary uplink (SUL).
  • the terminal device is configured with one PUL and at least one SUL.
  • the terminal device can determine the reference signal received power of the downlink reference signal (Reference Signal Received). Power, RSRP) The size relationship between the preset RSRP threshold and the uplink carrier that initiates the random access determined in the PUL and the at least one SUL.
  • RSRP Reference Signal Received
  • the embodiment of the present application provides a random access method and device, which can enable a terminal device configured with one PUL and at least one SUL and in a connected state to determine an uplink carrier that initiates random access, to complete random access.
  • a random access method is provided, which is applied to a chip or a terminal device in a terminal device that is in a connected state and configured with at least two uplink carriers. Specifically, after the terminal device (or the chip in the terminal device) receives the first information that is sent by the access network device and is used to determine the at least one uplink carrier that has the random access resource in the at least two uplink carriers, The uplink carrier that initiates the random access is determined by the at least one uplink carrier having the random access resource, so that the terminal device (or the chip in the terminal device) can initiate random access on the uplink carrier that initiates the random access.
  • the first information in the embodiment of the present application is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers configured by the terminal device (or the chip in the terminal device), such that the terminal device (or the terminal device) And determining, according to the first information, at least one uplink carrier that has a random access resource, and determining, from the at least one uplink carrier that has the random access resource, an uplink carrier that can initiate random access, to implement The terminal device (or a chip in the terminal device) performs random access.
  • the method for determining an uplink carrier that initiates random access in at least one uplink carrier that has a random access resource is: receiving, sent by the access network device And second information indicating the uplink carrier that initiates the random access, and determining, according to the second information, the uplink carrier that initiates the random access.
  • the terminal device determines the uplink carrier that initiates the random access according to the indication of the access network device, effectively improves the success rate of the random access, and reduces the communication system. Unbalanced load.
  • the at least two uplink carriers include a first uplink carrier and N second uplink carriers, where N ⁇ 1.
  • the at least one uplink carrier with the random access resource includes the M second uplink carriers of the N second uplink carriers
  • the uplink carrier that initiates the random access is the M second uplink carriers.
  • the at least one uplink carrier with the random access resource includes the first uplink carrier
  • the uplink carrier that initiates the random access is the first uplink carrier; or, the foregoing random access is initiated.
  • the uplink carrier is an uplink carrier configured with the physical uplink control channel resource in the at least one uplink carrier with the random access resource; or the uplink carrier that initiates the random access is the at least one uplink carrier with the random access resource
  • the configured uplink resource is the shortest uplink carrier in the time domain, or the uplink carrier that initiates the random access is: when the scheduling request fails to trigger the random access process, the random access is performed.
  • the uplink carrier where the resource used for the scheduling request is transmitted is transmitted in at least one uplink carrier of the resource.
  • the terminal device (or the chip in the terminal device) in the embodiment of the present application can autonomously determine the uplink carrier that initiates the random access, and can meet the requirement for the terminal device (or the chip in the terminal device) to initiate random access.
  • the terminal device in the embodiment of the present application may determine an uplink carrier that initiates random access according to an indication of the access network device, or may determine an uplink carrier that initiates random access.
  • the at least two uplink carriers include a first uplink carrier and N second uplink carriers, where N ⁇ 1.
  • the terminal device (or the chip in the terminal device) in the embodiment of the present application also acquires the signal quality of the downlink reference signal transmitted by the access network device.
  • the at least one uplink carrier with the random access resource includes M second uplink carriers of the N second uplink carriers, and the uplink carrier that initiates the random access is One of the M second uplink carriers, N ⁇ M ⁇ 1, the signal quality threshold is received from the access network device.
  • the at least two uplink carriers include a first uplink carrier and N second uplink carriers, where N ⁇ 1.
  • the terminal device (or the chip in the terminal device) in the embodiment of the present application also acquires the signal quality of the downlink reference signal transmitted by the access network device.
  • the signal quality of the downlink reference signal is greater than or equal to the signal quality threshold, if the at least one uplink carrier with the random access resource includes the first uplink carrier, the uplink carrier that initiates the random access is the first uplink carrier.
  • the uplink carrier that initiates the random access is the uplink carrier configured with the physical uplink control channel resource in the at least one uplink carrier that has the random access resource; or the uplink carrier that initiates the random access is randomized as described above.
  • the uplink access resource configured in the at least one uplink carrier of the access resource is the shortest uplink carrier in the time domain; or the uplink carrier that initiates the random access is the random access procedure triggered by the scheduling request failure.
  • the uplink carrier where the resource used for the scheduling request is sent in at least one uplink carrier with the random access resource is used.
  • the terminal device in the embodiment of the present application can determine the uplink carrier that initiates the random access by determining the size relationship between the signal quality of the downlink reference signal and the signal quality threshold.
  • the terminal device determines that there are multiple methods for initiating the uplink carrier of the random access, which is not specifically limited in this embodiment of the present application.
  • the terminal device (or a chip in the terminal device) is determined before the uplink carrier that initiates the random access is determined in the at least one uplink carrier that has the random access resource. And receiving third information sent by the access network device to trigger a random access procedure.
  • the terminal device (or the chip in the terminal device) in the embodiment of the present application may initiate a random access according to the indication of the access network device, and may also initiate a random access according to the requirements of the application, which is not specifically limited in this embodiment.
  • the third information is a physical downlink control channel command
  • the physical downlink control channel command includes at least one of the fourth information and the fifth information
  • the fourth information includes
  • the access network device is search space location information configured by scheduling information of each uplink carrier in at least one uplink carrier having a random access resource
  • the fifth information includes the access network device being at least one uplink carrier having random access resources.
  • a Radio Network Temporary Identifier (RNTI) configured for each uplink carrier.
  • the terminal device (or the chip in the terminal device) is configured according to the fourth information and the fifth information. At least one of the plurality of uplink carriers capable of initiating random access in the at least one uplink carrier having the random access resource. In this way, the terminal device (or the chip in the terminal device) initiates random access on the uplink carrier that initiates random access determined by the terminal device (or the chip in the terminal device) according to the third information.
  • the access network device in the embodiment of the present application may be sent to the terminal device (or the chip in the terminal device) in different manners for determining.
  • Information about the uplink carrier that initiates random access may be sent to the terminal device (or the chip in the terminal device) in different manners for determining.
  • the terminal device after determining, by using the “uplink carrier that initiates random access in at least one uplink carrier with random access resources,” the terminal device (or the chip in the terminal device) And determining the currently activated sub-band in the uplink carrier that initiates the random access. If the currently activated sub-band is not the preset sub-band, the terminal device (or the chip in the terminal device) will be the currently activated sub-band. The band switches to the preset subband.
  • the method for initiating random access on the uplink carrier that initiates the random access is to initiate random access by using the random access resource in the preset sub-band on the uplink carrier that initiates the random access. .
  • subbands are also known as band with parts (BWP).
  • a subband in the embodiment of the present application refers to a series of consecutive physical resource blocks or resource blocks in a carrier.
  • the preset sub-band is an uplink carrier that has a random access resource in the communication system, and is configured with a sub-band of the random access resource in advance.
  • the existing standard protocol stipulates that the terminal device transmits data using resources in the currently activated subband in the carrier.
  • the subband currently activated in a certain carrier is not necessarily a preset subband.
  • the terminal device switches the currently activated subband in the uplink carrier that initiates the random access to the preamble. Set subbands to improve the success rate of random access.
  • the terminal device (or the chip in the terminal device) is further configured with a first counter, where the first counter is used to record the number of times the random access is re-initiated; or
  • the terminal device (or the chip in the terminal device) configures a second counter for each of the at least one uplink carrier with the random access resource, and the second counter is used to record the re-initiation of the random on the corresponding uplink carrier. The number of accesses.
  • the terminal device (or the chip in the terminal device) is further configured with a third counter and a first preset power ramp step, and the third counter is used to Recording the number of times the transmission power is changed when the random access is re-initiated, and the value of the transmission power is changed based on the first preset power ramp step; or the terminal device (or the chip in the terminal device) is the random access resource described above.
  • Each of the at least one uplink carrier is configured with a fourth counter and a second preset power ramp step, and the fourth counter is configured to record the number of changes of the transmit power when the random access is re-initiated on the corresponding uplink carrier. The value of the transmit power is changed based on the second preset power ramp step corresponding to the uplink carrier used to re-initiate the random access.
  • the terminal device (or the chip in the terminal device) in the embodiment of the present application initiates random access on the uplink carrier that initiates random access, there may be a case of failure.
  • the terminal device (or the chip in the terminal device) may re-initiate the random access on the uplink carrier that initiates the random access, or may use
  • the random access method provided by the embodiment of the present application reselects an uplink carrier that initiates random access, and initiates random access again on the reselected uplink carrier that initiates random access.
  • a random access device which is a chip or a terminal device applied to a terminal device in a connected state and configured with at least two uplink carriers.
  • the random access device includes a communication unit and a determining unit.
  • the foregoing communication unit is configured to receive first information sent by the access network device, where the first information is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers.
  • the determining unit is configured to determine, according to the first information received by the communications unit, at least one uplink carrier that has a random access resource, and determine, in the at least one uplink carrier that has the random access resource, that the random access is initiated.
  • Uplink carrier is further configured to initiate random access on an uplink carrier that initiates random access determined by the determining unit.
  • the foregoing communications unit is further configured to receive second information sent by the access network device, where the second information is used to indicate an uplink carrier that initiates random access.
  • the determining unit is specifically configured to determine, according to the second information received by the receiving unit, an uplink carrier that initiates random access.
  • the at least two uplink carriers include a first uplink carrier and N second uplink carriers, where N ⁇ 1.
  • the at least one uplink carrier with the random access resource includes M second uplink carriers of the N second uplink carriers, and the uplink carrier that initiates the random access is the M second uplink carriers.
  • at least one uplink carrier having a random access resource includes the first uplink carrier, and the uplink carrier that initiates the random access is the first uplink carrier; or the uplink that initiates the random access.
  • the carrier is an uplink carrier configured with the physical uplink control channel resource in the at least one uplink carrier with the random access resource; or the uplink carrier that initiates the random access is configured in the at least one uplink carrier with the random access resource
  • the random access resource in the time domain is the shortest uplink carrier from the current transmission time; or the uplink carrier that initiates the random access is in the case that the random access procedure is triggered when the scheduling request fails, the foregoing random access resources are at least An uplink carrier in which an resource used for scheduling request is transmitted in an uplink carrier.
  • the at least two uplink carriers include a first uplink carrier and N second uplink carriers, where N ⁇ 1.
  • the random access device provided by the embodiment of the present application further includes an acquiring unit, where the acquiring unit is configured to acquire a signal quality of a downlink reference signal sent by the access network device. If the signal quality of the downlink reference signal is smaller than the signal quality threshold, the at least one uplink carrier with the random access resource includes M second uplink carriers of the N second uplink carriers, and the uplink carrier that initiates the random access is M One of the second uplink carriers, N ⁇ M ⁇ 1, and the signal quality threshold is received from the access network device.
  • the at least two uplink carriers include a first uplink carrier and N second uplink carriers, where N ⁇ 1.
  • the random access device provided by the embodiment of the present application further includes an acquiring unit, where the acquiring unit is configured to acquire a signal quality of a downlink reference signal sent by the access network device.
  • the at least one uplink carrier with the random access resource includes the first uplink carrier, and the uplink carrier that initiates the random access is the first uplink carrier; or
  • the uplink carrier that initiates the random access is an uplink carrier configured with the physical uplink control channel resource in the at least one uplink carrier with the random access resource; or the uplink carrier that initiates the random access is the foregoing random access resource
  • the uplink access resource configured in the at least one uplink carrier is the shortest uplink carrier in the time domain; or the uplink carrier that initiates the random access is in the case that the random access procedure is triggered by the failure of the scheduling request,
  • the uplink carrier where the resource used for the scheduling request is sent in at least one uplink carrier having a random access resource.
  • the foregoing communications unit is further configured to: before determining, by the determining unit, the uplink carrier that initiates the random access, in the at least one uplink carrier that has the random access resource, Receiving third information sent by the access network device, where the third information is used to trigger a random access procedure.
  • the third information is a physical downlink control channel command
  • the physical downlink control channel command includes at least one of a fourth information and a fifth information
  • the fourth information is And including, by the access network device, search space location information configured by scheduling information of each uplink carrier of the at least one uplink carrier having the random access resource
  • the fifth information includes at least one of the access network device having the random access resource
  • the RNTI configured for each uplink carrier in the uplink carrier.
  • the determining unit is further configured to: after determining an uplink carrier that initiates random access in at least one uplink carrier that has a random access resource, determine to initiate a random connection.
  • the random access device provided by the embodiment of the present application further includes a switching unit, configured to: if the currently activated subband determined by the determining unit is not a preset subband, the currently activated sub The band switches to the preset subband.
  • the foregoing communication unit is specifically configured to initiate random access on the uplink carrier that initiates the random access by using the random access resource in the preset sub-band switched by the switching unit.
  • the random access device provided by the embodiment of the present application further includes a first configuration unit, where the first configuration unit is configured to configure a first counter, the first counter The second counter is configured to record the number of times of re-initiating the random access, or is configured to be configured for each of the at least one uplink carrier having the random access resource, where the second counter is used to record on the corresponding uplink carrier. The number of times to re-initiate random access.
  • the random access device provided by the embodiment of the present application further includes a second configuration unit, where the second configuration unit is configured to configure the third counter and the first preset The power ramp step, the third counter is used to record the number of changes of the transmit power when the random access is re-initiated, and the value of the transmit power is changed based on the first preset power ramp step, or is used to have random
  • Each of the at least one uplink carrier of the access resource is configured with a fourth counter and a second preset power ramp step, where the fourth counter is configured to record the transmit power when the random access is re-initiated on the corresponding uplink carrier. The number of changes, the value of the transmission power is changed based on the second preset power ramp step corresponding to the uplink carrier used to re-initiate the random access.
  • a terminal device comprising: one or more processors, a memory, and a communication interface.
  • the memory the communication interface is coupled to the one or more processors; the terminal device communicates with the access network device via the communication interface, the memory is for storing computer program code, the computer program code comprising instructions, when the one or more processors execute the instructions.
  • a fourth aspect there is provided a computer readable storage medium having stored therein instructions; when executed on a terminal device, causing the terminal device to perform the first aspect as described above and its various possible implementations The random access method described in the manner.
  • a computer program product comprising instructions which, when run on a terminal device, cause the terminal device to perform the random access method as described in the first aspect above and its various possible implementations.
  • the name of the above terminal device is not limited to the device or the function module itself. In actual implementation, these devices or function modules may appear under other names. As long as the functions of the respective devices or functional modules are similar to the present application, they are within the scope of the claims and their equivalents.
  • a random access method is provided, and the random access method is applied to an access network device or a chip in the access network device.
  • the access network device (or the chip in the access network device) sends, to the terminal device, first information for determining at least one uplink carrier that has a random access resource among the at least two uplink carriers, where the terminal device is located a connection state, and configured with the at least two uplink carriers; the access network device (or a chip in the access network device) receives the initiated random access of the terminal device in the at least one uplink carrier with the random access resource A random access request sent on the uplink carrier.
  • the first information in the embodiment of the present application is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers configured by the terminal device, and the access network device (or a chip in the access network device) passes the The terminal device sends the first information, so that the terminal device can determine at least one uplink carrier with the random access resource according to the first information, and further determine that the random connection can be initiated from the at least one uplink carrier that has the random access resource.
  • the incoming uplink carrier is used to implement the random access of the terminal device.
  • the access network device (or the chip in the access network device) further sends, to the foregoing terminal device, a first carrier that is used to indicate the uplink carrier that initiates the random access. Two information.
  • the access network device (or the chip in the access network device) further sends third information for triggering the random access procedure to the terminal device.
  • the third information is a physical downlink control channel command, where the physical downlink control channel command includes at least one of a fourth information and a fifth information, where the fourth The information includes the search space location information configured by the access network device for the scheduling information of each of the uplink carriers of the at least one uplink carrier having the random access resource, where the fifth information includes that the access network device is randomly connected to the foregoing The RNTI configured for each uplink carrier in at least one uplink carrier of the resource.
  • a random access device is provided, where the random access device is an access network device or a chip in the access network device.
  • the random access device includes a processing unit, a sending unit, and a receiving unit.
  • the processing unit is configured to determine first information, where the first information is used to indicate that the terminal device determines at least one uplink carrier that has a random access resource among the at least two uplink carriers, where the terminal device is in a connected state and configured At least two uplink carriers.
  • the sending unit is configured to send the first information that is determined by the processing unit to the terminal device, where the terminal device is in a connected state, and is configured with at least two uplink carriers, where the first information is used to determine at least two uplink carriers. At least one uplink carrier with random access resources.
  • the receiving unit is configured to receive a random access request sent by the terminal device on the uplink carrier that initiates random access in the at least one uplink carrier that has the random access resource.
  • the sending unit is further configured to send, to the terminal device, second information, where the second information is used to indicate an uplink carrier that initiates random access.
  • the sending unit is further configured to send, to the terminal device, third information, where the third information is used to trigger a random access procedure.
  • the third information is a physical downlink control channel command, where the physical downlink control channel command includes at least one of a fourth information and a fifth information, where the fourth The information includes the search space location information configured by the access network device as the scheduling information of each uplink carrier in the at least one uplink carrier having the random access resource, where the fifth information includes the at least the access network device having the random access resource
  • the RNTI configured for each uplink carrier in an uplink carrier.
  • an access network device comprising: one or more processors, a memory, and a communication interface.
  • the memory and communication interface are coupled to one or more processors; the access network device communicates with the terminal device through a communication interface, the memory is used to store computer program code, and the computer program code includes instructions when one or more processors execute the instructions.
  • the access network device performs the random access method as described in the sixth aspect above and its various possible implementations.
  • a ninth aspect further provides a computer readable storage medium having stored therein instructions; when operating on an access network device, causing the access network device to perform the sixth aspect and each of the above A random access method as described in a possible implementation manner.
  • a tenth aspect further provides a computer program product comprising instructions, when operating on an access network device, causing the access network device to perform random access as described in the sixth aspect above and its various possible implementations Into the method.
  • the name of the above terminal device is not limited to the device or the function module itself. In actual implementation, these devices or function modules may appear under other names. As long as the functions of the respective devices or functional modules are similar to the present application, they are within the scope of the claims and their equivalents.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is another schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of hardware of a smart phone according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of hardware of a base station according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart 1 of a random access method according to an embodiment of the present disclosure.
  • FIG. 6 is a second schematic flowchart of a random access method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart 3 of a random access method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic flowchart 4 of a random access method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic flowchart 5 of a random access method according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram 1 of a random access device according to an embodiment of the present disclosure.
  • FIG. 11 is a second schematic structural diagram of a random access device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram 3 of a random access apparatus according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram 4 of a random access apparatus according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram 5 of a random access apparatus according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of an access network device according to an embodiment of the present disclosure.
  • the words “exemplary” or “such as” are used to mean an example, illustration, or illustration. Any embodiment or design described as “exemplary” or “for example” in the embodiments of the present application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the words “exemplary” or “such as” is intended to present the concepts in a particular manner.
  • first and second and the like in the specification and claims of the present application are used to distinguish different objects, and are not intended to describe a particular order of the objects.
  • first information and the second information and the like are used to distinguish different data blocks, rather than to describe a specific order of data blocks.
  • a plurality of communication states are defined for the terminal device. For example, if the terminal device establishes a communication connection with the base station, it is defined that the terminal device is in a Connected state (or Connected mode). If the terminal device is in the standby state, it is defined that the terminal device is in an idle state (or Idle mode).
  • the carrier used for transmitting data is a high-frequency carrier.
  • the transmission power of the terminal device is low.
  • the base station may not be able to receive the signal transmitted by the terminal device, but the terminal device may receive the signal transmitted by the base station through the high frequency downlink. This has the problem of asymmetric coverage of the uplink and the downlink.
  • the terminal equipment in the 5G system is configured with one PUL and at least one SUL in a certain cell, and the frequency band to which the SUL belongs is smaller than the frequency band to which the PUL belongs.
  • the SUL is used to assist the terminal device in transmitting uplink data.
  • the terminal device sends uplink data to the base station by using the same transmit power, the transmission distance when the uplink data is sent on the PUL is farther than the transmission distance when the uplink data is sent on the SUL.
  • the terminal device in the Idle state can determine the size relationship between the RSRP of the downlink reference signal and the preset RSRP threshold in the PUL and An uplink carrier that initiates random access determined in at least one SUL.
  • the communication system includes a base station, a terminal device 1 and a terminal device 2, and the base station provides services for both the terminal device 1 and the terminal device 2, and the terminal device 1 and the terminal device 2 are located at a corresponding one of the base stations.
  • Each cell is configured with one PUL and one SUL, and both are in the Idle state. If the terminal device 1 determines that the RSRP of the downlink reference signal is greater than or equal to the preset RSRP threshold, it indicates that the terminal device 1 is located in the central area of the cell, and the terminal device 1 may select the PUL to initiate random access. If the terminal device 2 determines that the RSRP of the downlink reference signal is smaller than the preset RSRP threshold, it indicates that the terminal device 2 is located in an edge region of the cell, and the terminal device 2 can select the SUL to initiate random access.
  • the terminal device is configured with one PUL and at least one SUL in a certain cell
  • the device completes the random access method.
  • the embodiment of the present application provides a random access method, where the random access method is applied to a chip or a terminal device in a terminal device that is in a connected state and configured with at least two uplink carriers.
  • the terminal device After receiving the first information sent by the access network device for determining the at least one uplink carrier of the at least two uplink carriers that has the random access resource, the terminal device (or the chip in the terminal device) is randomly connected to the foregoing
  • the uplink carrier that initiates the random access is determined in the at least one uplink carrier of the incoming resource, so that the terminal device (or the chip in the terminal device) can initiate random access on the uplink carrier that initiates the random access.
  • the random access method provided by the embodiment of the present application is applicable to a communication system.
  • the communication system may be a 5G system, or may be an LTE system, or may be another communication system configured with at least two uplink carriers for the terminal device, which is not specifically limited in this embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • the communication system includes a plurality of terminal devices and an access network device 21, and each terminal device and the access network device 21 can transmit data through radio waves, or can pass visible light, laser, infrared, or optical quantum. Power lines, optical fibers, coaxial cables, copper strands, etc. for data transmission.
  • Each terminal device is configured with at least two uplink carriers, for example, at least two uplink carriers include one PUL and at least one SUL.
  • FIG. 2 shows six terminal devices, which are terminal device 1, terminal device 2, terminal device 3, terminal device 4, terminal device 5, and terminal device 6, respectively.
  • the terminal device 4, the terminal device 5, and the terminal device 6 in FIG. 2 also constitute a device to device (D2D) communication system, and the terminal device 4 and the terminal device 6 communicate with the access network device 21 through the terminal device 5, respectively.
  • D2D device to device
  • the terminal device in the embodiment of the present application may be a wireless terminal device capable of receiving scheduling information and indication information sent by the access network device 21.
  • the wireless terminal device can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem.
  • the wireless terminal device is an MTU UE.
  • the wireless terminal device can communicate with one or more core networks via a wireless access network (eg, RAN, English: Radio Access Network).
  • the wireless terminal device may be a mobile terminal device such as a mobile phone (or "cellular" phone) and a computer having a mobile terminal device, or may be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device. Exchange language and/or data with a wireless access network, such as a cell phone, tablet, laptop, netbook, Personal Digital Assistant (PDA).
  • PDA Personal Digital Assistant
  • the wireless terminal device may also be referred to as a terminal device.
  • the terminal device shown in FIG. 2 may be a smart phone, and specific components of the smart phone are specifically described below with reference to FIG. 3 .
  • the smart phone includes a processor 31, a radio frequency (RF) circuit 32, a power source 33, a memory 34, an input unit 35, a display unit 36, an audio circuit 37, and the like.
  • RF radio frequency
  • FIG. 3 does not constitute a limitation on the smart phone, and may include more or less components such as those shown in FIG. 3, or may be combined as shown in FIG. 3. Some of the components shown may be different than the components shown in FIG.
  • the processor 31 is a control center for the smartphone that connects various portions of the entire smartphone using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 34, and recalling data stored in the memory 34.
  • processor 31 may include one or more processing units.
  • the processor 31 can integrate an application processor and a modem processor.
  • the application processor mainly processes an operating system, a user interface, an application, and the like; the modem processor mainly processes wireless communication.
  • the application processor and the modem processor may be set independently of each other or integrated in the same device.
  • the RF circuit 32 can be used for transmitting and receiving information or during a call, and receiving and transmitting the signal. Specifically, after receiving the downlink information of the base station, the processing is performed by the processor 31. In addition, the uplink data is sent to the base station.
  • RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
  • RF circuitry 32 can also communicate with the network and other devices via wireless communication.
  • Wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division Multiple) Access, CDMA), Wideband Code Division Multiple Access (WCDMA), LTE, E-mail, Short Messaging Service (SMS), etc.
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • Code Division Multiple Access Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • E-mail Short Messaging Service
  • SMS Short Messaging Service
  • the smart phone includes a power source 33 (such as a battery) that supplies power to various components.
  • a power source can be logically coupled to the processor 31 through a power management system to manage functions such as charging, discharging, and power management through the power management system.
  • the memory 34 can be used to store software programs and modules, and the processor 31 executes various functional applications and data processing of the smartphone by running software programs and modules stored in the memory 34.
  • the memory 34 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as initiating random access), and the like; and the storage data area may be stored according to the use of the smart phone.
  • the data created (such as audio data, phone book) and so on.
  • memory 34 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 35 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the smartphone.
  • the input unit 35 may include a touch screen 351 and other input devices 352.
  • the touch screen 351 can collect touch operations on or near the user (such as the operation of the user using a finger, a stylus, or the like on or near the touch screen 351), and The preset program drives the corresponding connection device.
  • the touch screen 351 may include two parts of a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 31 is provided and can receive commands from the processor 31 and execute them.
  • the touch screen 351 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the display unit 36 can be used to display information input by the user or information provided to the user as well as various menus of the smartphone.
  • the display unit 36 can include a display panel 361.
  • the display panel 361 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the touch screen 351 may cover the display panel 361, and when the touch screen 351 detects a touch operation on or near it, transmits to the processor 31 to determine the type of the touch event, and then the processor 3 displays the panel according to the type of the touch event. A corresponding visual output is provided on the 361.
  • the touch screen 351 and the display panel 361 are two separate components to implement the input and output functions of the smartphone, in some embodiments, the touch screen 351 can be integrated with the display panel 361 to implement the smart function. The input and output functions of the phone.
  • An audio circuit 37, a speaker 371 and a microphone 372 are provided for providing an audio interface between the user and the smartphone.
  • the audio circuit 37 can transmit the converted electrical data of the received audio data to the speaker 371 for conversion to the sound signal output by the speaker 371; on the other hand, the microphone 372 converts the collected sound signal into an electrical signal, by the audio circuit 37. After receiving, it is converted to audio data, and then the audio data is output to the RF circuit 32 for transmission to, for example, another smartphone, or the audio data is output to the memory 34 for further processing.
  • the smartphone may also include various sensors (such as a gyro sensor, a hygrometer sensor, an infrared sensor or a magnetometer sensor), a Wi-Fi module, a Bluetooth module, a housing, and the like. Not shown in Figure 3.
  • the access network device 21 in the embodiment of the present application communicates with each terminal device.
  • the access network device 21 is a device having a central control function, such as a base station, a pico, a transmission point (TP), a relay, an access point (AP), and the like.
  • the base station may be a base station (BS) or a base station controller for wireless communication.
  • the access network device 21 is a device deployed in the radio access network to provide a wireless communication function for the terminal device, and can be connected to the terminal device, and receive data sent by the terminal device and sent to the core network device.
  • the main functions of the access network device include one or more of the following functions: management of radio resources, compression of Internet Protocol (IP) headers, encryption of user data streams, and mobility management entity when the terminal device is attached (Mobility Management) Entity, MME) selection, routing of user plane data to Service Gateway (SGW), organization and transmission of paging messages, organization and transmission of broadcast messages, configuration of measurement and measurement reports for mobility or scheduling purposes and many more.
  • management of radio resources IP
  • IP Internet Protocol
  • MME Mobility Management Entity
  • MME Mobility Management Entity
  • SGW Service Gateway
  • the name of the access network device 21 may vary.
  • the name of the access network device 21 is an evolved base station (evolved NodeB, eNB or eNodeB);
  • the name of the access network device 21 is a base station (Node B);
  • the name of the access network device 21 is gNB;
  • the access point is an access point (Access Ponit).
  • This name may change as communication technologies evolve.
  • the access network device 21 may be other devices that provide wireless communication functionality for the terminal device.
  • a device that provides a wireless communication function for a terminal device is referred to as an access network device.
  • the access network device 21 shown in FIG. 2 may be a base station, and specific components of the base station are specifically described below with reference to FIG. 4 .
  • the base station includes: a baseband unit (BBU), a radio remote unit (RRU), and an antenna.
  • BBU baseband unit
  • RRU radio remote unit
  • the BBU and the RRU can be connected by using an optical fiber, and the RRU is further connected by a coaxial cable.
  • the power splitter (coupler) is connected to the antenna, generally one BBU can connect multiple RRUs.
  • the RRU can include four modules: a digital intermediate frequency module, a transceiver module, a power amplifier module, and a filtering module.
  • the digital intermediate frequency module is used for modulation and demodulation of optical transmission, digital up-conversion, digital-to-analog conversion, etc.; the transceiver module completes the conversion of the intermediate frequency signal to the radio frequency signal; and after the amplification of the power amplifier module and the filtering of the filtering module, the RF signal is transmitted through the antenna.
  • a digital intermediate frequency module is used for modulation and demodulation of optical transmission, digital up-conversion, digital-to-analog conversion, etc.
  • the transceiver module completes the conversion of the intermediate frequency signal to the radio frequency signal
  • the RF signal is transmitted through the antenna.
  • the BBU is used to complete the baseband processing functions (encoding, multiplexing, modulation, and spreading) of the Uu interface (ie, the interface between the terminal device and the base station), and between the Radio Network Controller (RNC) and the base station.
  • FIG. 5 is a schematic flowchart diagram of a random access method according to an embodiment of the present application.
  • the random access method may be applied to the communication system shown in FIG. 2.
  • S500 and S501 are performed by the access network device 21 shown in FIG. 2, and may be executed by a processor in the access network device 21.
  • S502 and S503 are executed by the terminal device shown in FIG. 2, and may be specifically executed by a processor in the terminal device.
  • the processor in the access network device and the processor in the terminal device may exist in the form of a chip.
  • the terminal device in this embodiment of the present application is configured with at least two uplink carriers in one cell.
  • the terminal devices involved in the subsequent content are each used to indicate a terminal device configured with at least two uplink carriers in one cell.
  • the random access method includes the following steps.
  • the access network device sends, to the terminal device, first information, where the first information is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers.
  • the access network device sends the first information by using a radio resource control (RRC) signaling, and the first information is sent by using other high-layer signaling, which is not specifically limited in this embodiment of the present application.
  • RRC radio resource control
  • the first information in the embodiment of the present application may include time domain information of the random access resource and frequency domain information of the random access resource.
  • the terminal device can determine that at least two uplink carriers are randomly selected according to the time domain information of the random access resource and the frequency domain information of the random access resource, based on the configured at least two uplink carriers.
  • the upstream carrier of the incoming resource can be determined that at least two uplink carriers are randomly selected according to the time domain information of the random access resource and the frequency domain information of the random access resource, based on the configured at least two uplink carriers.
  • the first information in the embodiment of the present application may include time domain information of the random access resource, frequency domain information of the random access resource, and identifiers of some uplink carriers of the at least two uplink carriers.
  • the terminal device may directly determine an uplink carrier with random access resources among the at least two uplink carriers according to the identifiers of some uplink carriers of the at least two uplink carriers included in the first information.
  • the first information in the embodiment of the present application may also be used to determine at least one uplink carrier that has a random access resource in the at least two uplink carriers, which is not specifically limited in this embodiment.
  • the access network device sends, to the terminal device, second information, where the second information is used to indicate an uplink carrier that initiates random access.
  • the access network device determines, according to the load of each uplink carrier in the at least one uplink carrier that has the random access resource, an uplink carrier that can be used to initiate random access, and sends the second information to the terminal device, where the The second information is used to indicate an uplink carrier that initiates random access.
  • the second information is a number of the at least two uplink carriers of the uplink carrier that initiates the random access, and may be another identifier that can be used to indicate the uplink carrier that initiates the random access. No specific limitation.
  • the access network device may send the second information to the terminal device by using the RRC configuration signaling, or may send the second information to the terminal device by using the RRC reconfiguration signaling, and may also send the second information to the terminal device by using other RRC signaling.
  • the second information is not specifically limited in this embodiment of the present application.
  • the terminal device determines, according to the second information, an uplink carrier that initiates random access.
  • the terminal device triggers the initiation of the random access procedure.
  • the terminal device in the embodiment of the present application may trigger the initiation of the random access process in other situations, which is not specifically limited in this embodiment of the present application.
  • the terminal device needs to determine an uplink carrier that initiates random access.
  • the second information is used to indicate the uplink carrier that initiates the random access. In this manner, after receiving the second information sent by the access network device, the terminal device can directly determine the uplink carrier that initiates the random access according to the second information.
  • the terminal device initiates random access on the determined uplink carrier that initiates random access.
  • the terminal device determines the uplink carrier that initiates the random access, so that the terminal device directly initiates random access on the determined uplink carrier that initiates the random access. Specifically, the terminal device sends a random access request including a preamble to the access network device on the determined uplink carrier that initiates the random access. Correspondingly, the access network device sends a corresponding random access response to the terminal device.
  • one carrier is configured with four sub-bands.
  • the sub-band is also called BWP (Bandwidth Part).
  • BWP Bandwidth Part
  • only one of the four subbands in a carrier will be activated.
  • a subband is composed of a series of consecutive Resource Blocks (RBs) or Physical Resource Blocks (PRBs).
  • RBs Resource Blocks
  • PRBs Physical Resource Blocks
  • the subband currently active in the carrier does not necessarily have resources.
  • the BWPs that are configured with resources in advance are collectively referred to as preset BWPs.
  • the preset BWP is an initial BWP (initial BWP), a default BWP (default BWP), or a cell defining BWP (cell defining BWP). In this way, the terminal device can complete the random access by using the random access resource in the preset BWP on the uplink carrier that initiates the random access.
  • the BWP is only a representation of the name of the subband. With the evolution of the communication technology, the name of the BWP may be changed, and the embodiment of the present application does not specifically limit this.
  • the terminal device determines the currently activated sub-band in the uplink carrier that initiates the random access; the terminal device determines that the uplink carrier that initiates the random access is currently activated. Whether the subband is the preset subband in the uplink carrier that initiates the random access; if the currently activated subband in the uplink carrier that initiates the random access is not the preset subcarrier in the uplink carrier that initiates the random access With the band, the terminal device switches the currently activated sub-band in the uplink carrier that initiates the random access to the preset sub-band in the uplink carrier that initiates the random access, and on the uplink carrier that initiates the random access.
  • the random access resource in the preset sub-band of the uplink carrier that initiates the random access initiates the random access; if the currently activated sub-band in the uplink carrier that initiates the random access is the uplink carrier that initiates the random access.
  • the preset subband in the terminal device the terminal device passes the random access resource in the currently activated subband in the uplink carrier that initiates the random access on the uplink carrier that initiates the random access. Since random access.
  • the terminal device in the embodiment determines the uplink carrier that initiates the random access according to the indication of the access network device, and initiates random access on the uplink carrier that initiates the random access, thereby implementing flexible scheduling of the random access resource. To avoid the imbalance of the communication system load.
  • the terminal device may determine the uplink carrier that initiates the random access according to the indication of the access network device, and may also determine the uplink carrier that initiates the random access according to the requirement.
  • the embodiment shown in FIG. 5 describes a process in which a terminal device determines an uplink carrier to initiate random access according to an indication of an access network device. Now, the terminal device autonomously determines the process of initiating the uplink carrier of the random access according to the demand.
  • the S600 is performed by the access network device 21 shown in FIG. 2, and may be specifically executed by a processor in the access network device 21.
  • S601, S602, and S603 are executed by the terminal device shown in FIG. 2, and may be specifically executed by a processor in the terminal device.
  • the random access method provided by the embodiment of the present application includes the following steps.
  • the access network device sends, to the terminal device, first information, where the first information is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers.
  • the terminal device determines, according to the first information, the at least one uplink carrier that has the random access resource.
  • the terminal device determines, in the foregoing at least one uplink carrier that has a random access resource, an uplink carrier that initiates random access.
  • the terminal device triggers the initiation of the random access procedure.
  • the terminal device in the embodiment of the present application may trigger the initiation of the random access process in other situations, which is not specifically limited in this embodiment of the present application.
  • the terminal device autonomously determines an uplink carrier that initiates random access in the at least one uplink carrier that has the random access resource.
  • At least two uplink carriers include a first uplink carrier and N second uplink carriers, where N ⁇ 1.
  • the first uplink carrier may be the above PUL
  • the second uplink carrier may be the foregoing SUL.
  • the method for determining, by the terminal device autonomously, the uplink carrier that initiates the random access in the at least one uplink carrier that has the random access resource may be any one of the following:
  • the terminal device selects one of the M second uplink carriers, and determines the selected second uplink carrier as the uplink carrier that initiates the random access.
  • the at least one uplink carrier with the random access resource includes M second uplink carriers of the N second uplink carriers.
  • the terminal device determines that the first uplink carrier is an uplink carrier that initiates random access.
  • the terminal device determines, as the uplink carrier that initiates random access, the uplink carrier configured with the physical uplink control channel resource in the at least one uplink carrier that has the random access resource.
  • the terminal device determines, as the uplink carrier that initiates random access, the uplink carrier that is configured in the at least one uplink carrier with the random access resource and has the shortest time in the time domain.
  • the terminal device in the embodiment of the present application may determine the time difference based on a Transmission Time Interval (TTI).
  • TTI Transmission Time Interval
  • the terminal device sends the uplink carrier where the resource used by the scheduling request is located in the at least one uplink carrier with the random access resource.
  • the uplink carrier determined to initiate random access.
  • the terminal device initiates random access on the determined uplink carrier that initiates random access.
  • S603 refers to the description of S503 above, and details are not described herein again.
  • the terminal device in this embodiment independently determines the uplink carrier that initiates the random access according to its own requirement, and initiates a random access request on the determined uplink carrier that initiates the random access request.
  • the access network device in the embodiment of the present application may further send a signal quality threshold to the terminal device, so that the terminal device can determine the signal quality and signal quality of the downlink reference signal.
  • the size relationship between the thresholds determines that the uplink carrier that initiates the random access is determined in the at least one uplink carrier with the random access resource.
  • S700, S701, and S702 are performed by the access network device 21 shown in FIG. 2, and may be executed by a processor in the access network device 21.
  • S703, S704, and S705 are executed by the terminal device shown in FIG. 2, and may be specifically executed by a processor in the terminal device.
  • the random access method provided by the embodiment of the present application includes the following steps.
  • the access network device sends a signal quality threshold to the terminal device.
  • the access network device configures a signal quality threshold, and sends its configured signal quality threshold to the terminal device through RRC configuration signaling or RRC reconfiguration signaling.
  • the access network device may send the signal quality threshold to the terminal device periodically or periodically, or may determine the signal quality threshold in real time according to the load of the at least two uplink carriers, and change to the terminal device when the signal quality threshold changes.
  • the signal quality threshold is not specifically limited in this embodiment of the present application.
  • the signal quality in the embodiment of the present application may be measured by the RSRP, and may be measured by the signal strength.
  • Other parameters that can indicate the signal strength are not specifically limited in this embodiment of the present application.
  • the access network device sends a downlink reference signal to the terminal device.
  • the access network device sends, to the terminal device, first information, where the first information is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers.
  • S702 can refer to the foregoing S500, and details are not described herein again.
  • the access network device may perform S700, S701, and S702 at the same time, or may perform S700 first, then execute S701, and finally execute S702, which is not specifically limited in this embodiment of the present application.
  • the terminal device acquires a signal quality of the downlink reference signal.
  • the terminal device After acquiring the downlink reference signal, the terminal device measures the signal quality of the downlink reference signal.
  • the terminal device may periodically measure the signal quality of the downlink reference signal, or periodically measure the signal quality of the downlink reference signal, and may also measure when there is a requirement for initiating random access.
  • the signal quality of the downlink reference signal is not specifically limited in this embodiment of the present application.
  • the terminal device determines whether a signal quality of the downlink reference signal is greater than or equal to a signal quality threshold.
  • the terminal device in this embodiment determines an uplink carrier that initiates random access from at least one uplink carrier having a random access resource according to a result of determining a signal quality of the downlink reference signal and a signal quality threshold. Specifically, if the signal quality of the downlink reference signal is less than the signal quality threshold, the terminal device performs S705; if the signal quality of the downlink reference signal is greater than or equal to the signal quality threshold, the terminal device performs S706a, or executes S706b, or executes S706c, or executes S706d. .
  • the terminal device selects one of the M second uplink carriers, and determines the selected second uplink carrier as the uplink carrier that initiates the random access.
  • At least one uplink carrier having a random access resource includes M second uplink carriers of the N second uplink carriers.
  • S705 is the same as the uplink carrier method A in which the terminal device determines to initiate random access.
  • the terminal device determines that the first uplink carrier is an uplink carrier that initiates random access.
  • S706a is the same as the uplink carrier method B in which the terminal device determines to initiate random access.
  • the terminal device determines, as the uplink carrier that initiates random access, the uplink carrier that is configured with the physical uplink control channel resource in the at least one uplink carrier that has the random access resource.
  • S706b is the same as the uplink carrier method C in which the terminal device determines to initiate random access.
  • the terminal device determines, as the uplink carrier that initiates random access, the uplink carrier that is configured in the at least one uplink carrier with the random access resource and has the shortest time in the time domain.
  • S706c is the same as the uplink carrier method D in which the terminal device determines to initiate random access.
  • the terminal device determines, as the uplink that initiates the random access, the uplink carrier where the resource used by the scheduling request is sent in the at least one uplink carrier that has the random access resource. Carrier.
  • S706d is the same as the uplink carrier method E in which the terminal device determines to initiate random access.
  • the terminal device initiates random access on the determined uplink carrier that initiates random access.
  • the terminal device in the embodiment of the present application can adopt different manners to flexibly select an uplink carrier that initiates random access, and is determined in the determined manner. Random access is initiated on the uplink carrier that initiates random access.
  • the embodiments shown in FIG. 5, FIG. 6, and FIG. 7 are all uplink devices that the terminal device determines to initiate random access after the terminal device has initiated the request for random access. That is to say, in the embodiments shown in FIG. 5, FIG. 6 and FIG. 7 above, the terminal device itself triggers a random access procedure.
  • the access network device may send related information to the terminal device, which is used to trigger the random access process.
  • S800 and S801 are performed by the access network device 21 shown in FIG. 2, and may be executed by a processor in the access network device 21.
  • S802 and S803 are executed by the terminal device shown in FIG. 2, and may be specifically executed by a processor in the terminal device.
  • the random access method provided by the embodiment of the present application includes the following steps.
  • the access network device sends, to the terminal device, first information, where the first information is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers.
  • the access network device sends third information to the terminal device, where the third information is used to trigger a random access procedure.
  • the third information may be RRC signaling, or may be a physical downlink control channel command (such as a PDCCH order), which is not specifically limited in this embodiment of the present application.
  • the physical downlink control channel command includes at least one of the fourth information and the fifth information.
  • the fourth information includes search space location information configured by the access network device for scheduling information of each uplink carrier of the at least one uplink carrier that has the random access resource, where the search space location information of the uplink carrier scheduling information is used. It may be the starting location information of the search space of the scheduling information of the uplink carrier.
  • the fifth information includes the RNTI configured by the access network device for each of the at least one uplink carrier having the random access resource.
  • the terminal device determines, in the foregoing at least one uplink carrier that has a random access resource, an uplink carrier that initiates random access.
  • the terminal device may determine, by using the method for determining the uplink carrier that initiates the random access in the embodiment shown in FIG. 6, to determine the uplink carrier that initiates the random access, that is, the description of the foregoing S602 is referred to herein. .
  • the terminal device acquires a certain random access resource corresponding to the start position of the search space indicated by the fourth information.
  • Downlink Control Information DCI
  • the terminal device can determine the uplink carrier corresponding to the location of the search space where the acquired DCI is located as the uplink carrier that initiates the random access.
  • the terminal device decodes the DCI in the random access resource according to the fifth information, so that the terminal device can obtain The DCI corresponding to an uplink carrier. After successfully decoding a DCI by using the RNTI corresponding to an uplink carrier, the terminal device may determine the uplink carrier corresponding to the RNTI used for decoding as the uplink carrier that initiates the random access.
  • the terminal device In response to the third information, the terminal device initiates random access on the determined uplink carrier that initiates random access.
  • the terminal device responds to the third information, and initiates random access on the determined uplink carrier that initiates the random access.
  • S803 can refer to the description of S503 above. The difference is that the foregoing S503 is a random access triggered by the terminal device itself, and S803 is a random access that the access network device indicates by the terminal device by signaling.
  • the access network device may further send, to the terminal device, second information, which is used to indicate the uplink carrier that initiates the random access.
  • the terminal device can directly determine the uplink carrier that initiates the random access according to the second information.
  • the random access method provided by the embodiment of the present application further includes the following steps before S802.
  • the access network device sends the second information to the terminal device, where the second information is used to indicate the uplink carrier that initiates the random access.
  • S804 can refer to the description of S501 above, and details are not described herein again.
  • the terminal device directly determines the uplink carrier that initiates the random access according to the second information, that is, the foregoing S502 is the same and will not be described in detail here.
  • the terminal device in the embodiment of the present application can trigger random access according to the indication of the access network device, and can also trigger random access according to its own needs.
  • the terminal device can determine the uplink carrier that initiates the random access according to the indication of the access network device, and can also determine the uplink carrier that initiates the random access, thereby effectively improving the success rate of the random access and saving the system overhead. , to achieve the balance of the load in the system.
  • Each of the above embodiments describes a process in which a terminal device initiates random access.
  • the terminal device after the terminal device initiates random access, there may be a possibility of random access failure.
  • the terminal device in the embodiment of the present application may re-initiate random access.
  • the terminal device in the embodiment of the present application may be configured with a first counter, where the first counter is used to record the number of times the terminal device re-initiates random access.
  • the terminal device after the terminal device fails the random access procedure initiated on the uplink carrier that initiates the random access, the terminal device re-initiates the random access, and the value of the first counter is incremented until the value of the first counter reaches the first The maximum threshold of a counter.
  • the uplink carrier used by the terminal device to initiate random access may be the same as the uplink carrier used for the last random access, or may be different.
  • the uplink carrier used by the terminal device to re-initiate the random access may be determined according to the method shown in any of the foregoing embodiments in FIG. 5 to FIG. 9 , which is not specifically limited in this embodiment.
  • each of the at least one uplink carrier that has the random access resource is configured with a second counter, where the second counter is used to record that the terminal device re-initiates on the corresponding uplink carrier. The number of random accesses.
  • the terminal device after the terminal device fails the random access procedure initiated on the uplink carrier that initiates the random access, the terminal device re-initiates the random access on the uplink carrier that initiates the random access.
  • the value of the second counter corresponding to the uplink carrier that initiates the random access is incremented by one until the value of the second counter corresponding to the uplink carrier that initiates the random access reaches the maximum threshold of the second counter.
  • the terminal device after the terminal device fails the random access procedure initiated on the uplink carrier that initiates the random access, the terminal The device re-initiates the random access on the uplink carrier that initiates the random access. At this time, the value of the second counter corresponding to the uplink carrier that initiates the random access is increased by one until the uplink carrier corresponding to the random access is initiated. The value of the second counter reaches the maximum threshold of the second counter.
  • the terminal device after the terminal device fails the random access procedure initiated on the uplink carrier that initiates the random access, the terminal device re-initiates the random access, and then re-initiates the random access with the terminal device.
  • the value of the second counter corresponding to the uplink carrier is incremented by one.
  • Each of the second counters is configured with a maximum threshold. When the value of the second counter of each of the at least one uplink carrier of the random access resource reaches the respective maximum threshold, the number of times the terminal device initiates the random access reaches Maximum value.
  • the maximum threshold of each second counter may be the same or different, which is not specifically limited in this embodiment of the present application.
  • the terminal device in the embodiment of the present application is configured with a first counter, and each of the at least one uplink carrier having the random access resource is configured with a second counter, where the first counter is used to record the terminal. The number of times the device re-initiates random access, and the second counter is used to record the number of times the terminal device re-initiates random access on the corresponding uplink carrier.
  • the terminal device after the terminal device fails the random access procedure initiated on the uplink carrier that initiates the random access, the terminal device re-initiates the random access on the uplink carrier that initiates the random access. At this time, the value of the first counter is incremented by one, and the value of the second counter corresponding to the uplink carrier that initiates the random access is incremented by one.
  • the first counter is set with a first maximum threshold
  • the second counter corresponding to the uplink carrier that initiates random access is set with a second maximum threshold, when the value of the first counter reaches a first maximum threshold and/or with the initiated random access
  • the value of the second counter corresponding to the uplink carrier reaches the second maximum threshold, the number of times the terminal device initiates random access reaches a maximum value.
  • the terminal device after the terminal device fails the random access procedure initiated on the uplink carrier that initiates the random access, the terminal The device re-initiates the random access on the uplink carrier that initiates the random access. At this time, the value of the first counter is incremented by one, and the value of the second counter corresponding to the uplink carrier that initiates the random access is incremented by one.
  • the first counter is set with a first maximum threshold
  • the second counter corresponding to the uplink carrier that initiates random access is set with a second maximum threshold, when the value of the first counter reaches a first maximum threshold and/or with the initiated random access
  • the value of the second counter corresponding to the uplink carrier reaches the second maximum threshold, the number of times the terminal device initiates random access reaches a maximum value.
  • the terminal device may further determine, according to other manners, whether the random access needs to be re-initiated.
  • the terminal device in the embodiment of the present application may change the transmission power of the terminal device.
  • the terminal device in the embodiment of the present application may be configured by a third counter and a first preset power ramp step, where the third counter is used to record the number of changes of the transmit power when the terminal device re-initiates random access.
  • the value of the transmission power of the terminal device changes based on the first preset power ramp step.
  • the value of the third counter is incremented by one, and the sending power of the terminal device changes according to the first preset power ramp step.
  • the third counter is set with a maximum threshold. When the value of the third counter reaches the maximum threshold, the transmission power of the terminal device does not change. Assuming that the value of the third counter is the maximum threshold, the transmission power of the terminal device is the first transmission power. After the value of the third counter reaches the maximum threshold, if the terminal device further re-initiates random access, the terminal device initiates random access according to the first sending power.
  • the value of the third counter is increased by one.
  • the transmit power of the terminal device changes according to the first preset power ramp step.
  • the third counter is set with a maximum threshold. When the value of the third counter reaches the maximum threshold, the transmission power of the terminal device does not change. Assuming that the value of the third counter is the maximum threshold, the transmission power of the terminal device is the first transmission power. After the value of the third counter reaches the maximum threshold, if the terminal device further re-initiates random access, the terminal device initiates random access according to the first sending power.
  • each of the at least one uplink carrier that has the random access resource in the foregoing embodiment is configured with a fourth counter and a second preset power ramp step, where the fourth counter is used. Recording the number of times the transmission power of the terminal device changes when the random access is re-initiated on the corresponding uplink carrier, and the value of the transmission power of the terminal device is based on the second preset power stepping step corresponding to the uplink carrier used for re-initiating the random access. Variety.
  • the second preset power ramping step configured for each of the at least one uplink carrier of the random access resource may be the same or different, which is not specifically limited in this embodiment of the present application.
  • the value of the fourth counter is increased by one, and the sending power of the terminal device is The step size changes according to the second preset power corresponding to the uplink carrier.
  • the fourth counter is set with a maximum threshold. When the value of the fourth counter reaches the maximum threshold, the transmission power of the terminal device does not change any more. Assuming that the value of the fourth counter is the maximum threshold, the transmission power of the terminal device is the second transmission power. After the value of the fourth counter reaches the maximum threshold, if the terminal device further initiates random access on the uplink carrier, the terminal device initiates random access according to the second sending power.
  • the terminal device after receiving the first information sent by the access network device for determining the at least one uplink carrier of the at least two uplink carriers that has the random access resource, the terminal device in the embodiment of the present application
  • the uplink carrier that initiates the random access is determined by the at least one uplink carrier having the random access resource, so that the terminal device can initiate random access on the uplink carrier that initiates the random access.
  • the embodiment of the present application provides a random access device 100, which may be a chip or a terminal device applied to a terminal device that is in a connected state and configured with at least two uplink carriers.
  • the random access device 100 is configured to perform the steps performed by the terminal device in the above random access method.
  • the random access device 100 provided by the embodiment of the present application may include a module corresponding to the corresponding step.
  • the embodiment of the present application may divide the function module into the random access device 100 according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and may be further divided in actual implementation.
  • FIG. 10 shows a possible structural diagram of the random access device 100 in the case where the respective functional modules are divided by corresponding functions.
  • the random access device 100 includes a communication unit 10 and a determination unit 11.
  • the communication unit 10 is configured to support the random access device 100 to perform S500, S501, and S503 in the embodiment shown in FIG. 5, S600 and S603 in the embodiment shown in FIG. 6, and S700 and S701 in the embodiment shown in FIG. S702, S702 and S707, S800, S801 and S803 in the embodiment shown in Fig. 8, S804 in the embodiment shown in Fig.
  • determining unit 71 for supporting the The random access device 100 performs S502 in the embodiment shown in FIG. 5, S601 and S602 in the embodiment shown in FIG. 6, S705, S706a, S706b, S706c, and S706d in the embodiment shown in FIG. 7, as shown in FIG. S802 in the embodiments, and/or other processes for the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the random access device 100 further includes an obtaining unit 12, a switching unit 13, a first configuration unit 14, and a second configuration unit 15.
  • the obtaining unit 12 is configured to support the random access device 100 to perform S703 in the embodiment shown in FIG.
  • the switching unit 13 is configured to support the random access device 100 from The currently activated sub-band is switched to a preset sub-band, and/or other processes for the techniques described herein;
  • the first configuration unit 14 is configured to support the random access device 100 to configure the first counter/second counter, and / or other processes for the techniques described herein;
  • the second configuration unit 15 is for supporting the random access device 100 to configure a third counter/fourth counter, and/or other processes for the techniques described herein.
  • the random access device 100 provided by the embodiment of the present application includes, but is not limited to, the foregoing module.
  • the random access device 100 may further include a storage unit.
  • the storage unit can be used to store the program code of the random access device 100.
  • FIG. 12 shows a possible structural diagram of the random access device 100 involved in the above embodiment.
  • the random access device 100 includes a processing module 1001 and a communication module 1002.
  • the processing module 1001 is configured to perform control and management on the operation of the random access device 100.
  • the processing module 1001 is configured to support the random access device 100 to execute S502, S601, S602, S705, S706a, and S706b in the foregoing method embodiments. , S706c, S706d, and S802.
  • the communication module 1002 is configured to support the random access device 100 to communicate with the access network device.
  • the communication module 1002 is configured to support the random access device 100 to perform S500, S501, S503, S600, and S603 in the foregoing method embodiment. S700, S701, S702, S707, S800, S801, S803, and S804.
  • the random access device 100 may further include a storage module 1003, which may be used to store program codes and data of the random access device 100.
  • the processing module 1001 may be the processor 31 in FIG. 3
  • the communication module 1002 may be the antenna in FIG. 3
  • the storage module 1003 may be Is the memory 34 in FIG.
  • the embodiment of the present application further provides a terminal device 110, where the terminal device 110 is in a connected state and configured with at least two uplink carriers.
  • the terminal device 110 includes the above random access device 100.
  • the terminal device 110 When the terminal device 110 is in operation, the terminal device 110 performs the random access method of the embodiment shown in any of the embodiments of FIG. 5 to FIG.
  • the random access method refer to the related description of any of the foregoing embodiments in FIG. 5 to FIG. 9 , and details are not described herein again.
  • Another embodiment of the present application further provides a computer readable storage medium having instructions stored therein.
  • the terminal device 110 When the instructions are run on the terminal device 110, the terminal device 110 performs any of FIGS. 5-9. The step of the terminal device in the random access method of the embodiment shown in the embodiment.
  • a computer program product comprising computer executed instructions stored in a computer readable storage medium; at least one processor of the terminal device 110 is The computer readable storage medium reads the computer execution instructions, and the at least one processor executes the computer to execute the instructions such that the terminal device 110 implements the steps of performing the terminal device in the random access method shown in any of the embodiments of FIG. 5 to FIG. .
  • the embodiment of the present application provides a random access device 200, which may be an access network device or a chip in the access network device.
  • the random access device 200 is configured to perform the steps performed by the access network device in the above random access method.
  • the random access device 200 provided by the embodiment of the present application may include a module corresponding to the corresponding step.
  • the embodiment of the present application may divide the function module into the random access device 200 according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and may be further divided in actual implementation.
  • FIG. 13 shows a possible structural diagram of the random access device 200 in this embodiment in the case where the respective functional modules are divided by corresponding functions.
  • the random access device 200 includes a processing unit 210, a transmitting unit 211, and a receiving unit 212.
  • the processing unit 210 is configured to support the random access device 200 to determine first information, and/or other processes for the techniques described herein;
  • the transmitting unit 211 is configured to support the random access device 200 to perform the embodiment shown in FIG. S500 and S501, S600 in the embodiment shown in FIG. 6, S700, S701 and S702 in the embodiment shown in FIG. 7, S800 and S801 in the embodiment shown in FIG. 8, in the embodiment shown in FIG.
  • the random access device 200 includes, but is not limited to, the foregoing module.
  • the random access device 200 may further include a storage unit 213.
  • the storage unit 213 can be used to store program codes and data of the random access device 200.
  • FIG. 14 shows a possible structural diagram of the random access device 200 involved in the above embodiment.
  • the random access device 200 includes a processing module 220 and a communication module 221.
  • the processing module 220 is configured to perform control management on the action of the random access device 200.
  • the processing module 220 is configured to support the random access device 200 to perform S103 in the foregoing method embodiment, and/or used in the method described herein.
  • Other processes of technology are configured to support the random access device 200 to communicate with the terminal device.
  • the communication module 221 is configured to support the random access device 200 to execute S100 and S102 in the foregoing method embodiments.
  • the random access device 200 can also include a storage module 222 that can be used to store program codes and data of the random access device 200.
  • the processing module 220 may be a processor or a controller, and may be, for example, a central processing unit (CPU) or a digital signal processor (DSP). It is possible to implement or carry out various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the invention.
  • the communication module 221 can be a communication interface, a transceiver circuit, a communication interface, or the like.
  • the storage module 222 can be a memory.
  • the embodiment of the present application further provides an access network device 300, where the access network device 300 includes the random access device 200.
  • the access network device 300 includes a communication interface 230, a processor 231, and a memory 232.
  • the communication interface 230, the processor 231 and the memory 232 are connected by a system bus 233, and communication with each other is completed.
  • the access network device 300 When the access network device 300 is operating, the access network device 300 performs the random access method of the embodiment shown in any of Figures 5-9.
  • the access network device 300 performs the random access method of the embodiment shown in any of Figures 5-9.
  • the access network device 300 performs the random access method of the embodiment shown in any of Figures 5-9.
  • the communication interface 230 is used to communicate with other devices or communication networks, such as Ethernet, WLAN, and the like.
  • the memory 232 is used to store software programs and application modules, and the processor 231 executes various functional applications and data processing of the access network device 300 by running software programs stored in the memory 232 and application modules.
  • the memory 232 can mainly include a stored program area 2320, wherein the stored program area 2320 can store an operating system, an application required for at least one function, such as sending indication information, and the like.
  • the memory 232 can be a read-only memory (ROM), or other types of static storage devices that can store static information and instructions, a random access memory (RAM), or can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • Other types of dynamic storage devices which may also be Electrically Erasable Programmable Read-Only Memory (EEPROM), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing instructions or
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing instructions or
  • the desired program code in the form of a data structure and any other medium that can be accessed by the terminal device, but is not limited thereto.
  • Memory 232 may be present independently and coupled to processor 231 via system bus 233. Memory 232 can also be integrated with processor 231.
  • the processor 231 is a control center of the access network device 300.
  • the processor 231 connects the various portions of the entire access network device 300 using various interfaces and lines, and executes or executes by executing or executing software programs and/or application modules stored in the memory 232, and recalling data stored in the memory 232.
  • the various functions and processing data of the network access device 300 enable overall monitoring of the access network device 300.
  • the processor 231 may include one or more CPUs, for example, the processor 231 in FIG. 15 includes a CPU 0 and a CPU 1.
  • the system bus 233 can be divided into an address bus, a data bus, a control bus, and the like. For the sake of clarity in the embodiments of the present invention, various buses are illustrated as system bus 233 in FIG.
  • Another embodiment of the present application also provides a computer readable storage medium including one or more program codes, the one or more programs including instructions when a processor in the access network device 300 is When the program code is executed, the access network device 300 performs the random access method as shown in any of Figures 5-9.
  • a computer program product comprising computer executed instructions stored in a computer readable storage medium; at least one processor of the access network device 300
  • the computer-executable instructions can be read from a computer readable storage medium, and the at least one processor executing the computer-executing instructions causes the access network device 300 to perform the access in the random access method illustrated in any of Figures 5-9 The steps of the network device.
  • the first information in the embodiment of the present application is used to determine at least one uplink carrier that has a random access resource among the at least two uplink carriers configured by the terminal device, so that the terminal device can determine that there is a random connection according to the first information.
  • the at least one uplink carrier of the resource is input, and the uplink carrier that can initiate the random access is determined from the at least one uplink carrier that has the random access resource, so that the terminal device completes the random access.
  • a computer program product includes one or more computer instructions.
  • 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, computer instructions can be wired from a website site, computer, server or data center (eg Coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.) is transmitted to another website site, computer, server, or data center.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data terminal device, such as a server, data center, or the like, including one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used.
  • the combination may be integrated into another device, or some features may be ignored or not performed.
  • 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 be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . 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 above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium.
  • the technical solution of the embodiments of the present application may be embodied in the form of a software product in the form of a software product in essence or in the form of a contribution to the prior art, and the software product is stored in a storage medium.
  • a number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor 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

本申请实施例公开一种随机接入方法及装置，涉及通信技术领域，使得被配置有一个PUL和至少一个SUL、且处于连接态的终端设备确定出发起随机接入的上行载波，以完成随机接入。该随机方法应用于处于连接态、且被配置有至少两个上行载波的终端设备中的芯片或者所述终端设备。所述方法包括：接收接入网设备发送的第一信息，第一信息用于确定至少两个上行载波中有随机接入资源的至少一个上行载波；在有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波；在发起随机接入的上行载波上发起随机接入。

Description

一种随机接入方法及装置
本申请要求于2017年11月17日提交中国专利局、申请号为2017111474109、发明名称为“一种随机接入方法及装置”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
本申请实施例涉及通信技术领域，尤其涉及一种随机接入方法及装置。
背景技术
为了满足移动通信系统的大容量及高速率的传输需求，第五代通信技术(the 5Generation Mobile Communication Technology，5G)系统引入大于6吉赫兹(GHz)的高频频段进行通信。一般的，终端设备的发送功率较低，这样，当终端设备处于小区边缘区域、且采用高频上行载波向基站发送信号时，由于高频信号在传输过程中传输损耗较大、且穿透能力较弱，因此，基站可能无法接收到该终端设备发送的信号，但是，该终端设备可以接收到基站通过高频下行链路(Downlink，DL)发送的信号。这样就出现了上下行覆盖不对称的问题。
为了解决上下行覆盖不对称的问题，5G系统中引入至少一段低频频段，例如长期演进(Long Term Evolution，LTE)的频段，用于辅助处于终端设备传输上行数据。这里，将原有的高频上行载波称为主要上行链路(Primary Uplink PUL)，将新引入的低频上行载波称为辅助上行链路(Supplementary Uplink，SUL)。这样，在一个小区中，终端设备被配置有一个PUL和至少一个SUL。
在终端设备在某一小区被配置有一个PUL和至少一个SUL的场景中，若该终端设备处于空闲(Idle)态，则该终端设备可以通过判断下行参考信号的参考信号接收功率(Reference Signal Received Power，RSRP)与预设的RSRP阈值之间的大小关系，在PUL和至少一个SUL中确定出的发起随机接入的上行载波。
但是，在终端设备在某一小区被配置有一个PUL和至少一个SUL的场景中，目前还不存在处于连接态(Connected)的终端设备如何确定发起随机接入的上行载波，以实现该终端设备完成随机接入的方法。
发明内容
本申请实施例提供一种随机接入方法及装置，能够使得被配置有一个PUL和至少一个SUL、且处于连接态的终端设备确定出发起随机接入的上行载波，以完成随机接入。
为达到上述目的，本申请实施例采用如下技术方案：
第一方面，提供一种随机接入方法，该随机接入方法应用于处于连接态、且被配置有至少两个上行载波的终端设备中的芯片或者所述终端设备。具体的，终端设备(或终端设备中的芯片)在接收到接入网设备发送的用于确定上述至少两个上行载波中有随机接入资源的至少一个上行载波的第一信息后，在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波，这样，该终端设备(或终端设备中的芯片) 即可在上述发起随机接入的上行载波上发起随机接入。
本申请实施例中的第一信息用于确定终端设备(或终端设备中的芯片)被配置的至少两个上行载波中有随机接入资源的至少一个上行载波，这样，终端设备(或终端设备中的芯片)根据该第一信息即可确定出有随机接入资源的至少一个上行载波，进而从有随机接入资源的至少一个上行载波中确定出可发起随机接入的上行载波，以实现该终端设备(或终端设备中的芯片)完成随机接入。
可选的，在本申请的一种可能的实现方式中，上述“在有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波”的方法为：接收接入网设备发送的用于指示上述发起随机接入的上行载波的第二信息，并根据该第二信息，确定上述发起随机接入的上行载波。
本申请实施例中的终端设备(或终端设备中的芯片)根据接入网设备的指示，确定发起随机接入的上行载波，有效的提高了随机接入的成功率，并降低了通信系统中负载的不均衡性。
可选的，在本申请的另一种可能的实现方式中，上述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1。在这种场景中，若上述有随机接入资源的至少一个上行载波包括N个第二上行载波中的M个第二上行载波，上述发起随机接入的上行载波为M个第二上行载波中的一个，N≥M≥1；或者，若上述有随机接入资源的至少一个上行载波包括第一上行载波，上述发起随机接入的上行载波为第一上行载波；或者，上述发起随机接入的上行载波为有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波；或者，上述发起随机接入的上行载波为上述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波；或者，上述发起随机接入的上行载波为：在调度请求失败触发随机接入过程的情况下，上述有随机接入资源的至少一个上行载波中发送调度请求使用的资源所在的上行载波。
本申请实施例中的终端设备(或终端设备中的芯片)可自主确定发起随机接入的上行载波，能够满足终端设备(或终端设备中的芯片)发起随机接入的需求。
结合上述描述可知，本申请实施例中的终端设备(或终端设备中的芯片)可以根据接入网设备的指示确定发起随机接入的上行载波，也可以自主确定发起随机接入的上行载波。
可选的，在本申请的另一种可能的实现方式中，上述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1。除了前面描述的步骤之外，本申请实施例中的终端设备(或终端设备中的芯片)还获取接入网设备发送的下行参考信号的信号质量。这样，若下行参考信号的信号质量小于信号质量阈值，上述有随机接入资源的至少一个上行载波包括N个第二上行载波中的M个第二上行载波，上述发起随机接入的上行载波为M个第二上行载波中的一个，N≥M≥1，该信号质量阈值为接收自接入网设备的。
可选的，在本申请的另一种可能的实现方式中，上述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1。除了前面描述的步骤之外，本申请实施例中的终端设备(或终端设备中的芯片)还获取接入网设备发送的下行参考信号的信号质量。 这样，在下行参考信号的信号质量大于或等于信号质量阈值的场景中：若上述有随机接入资源的至少一个上行载波包括第一上行载波，上述发起随机接入的上行载波为第一上行载波；或者，上述发起随机接入的上行载波为上述有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波；或者，上述发起随机接入的上行载波为上述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波；或者，上述发起随机接入的上行载波为在调度请求失败触发随机接入过程的情况下，上述有随机接入资源的至少一个上行载波中发送调度请求使用的资源所在的上行载波。
可以看出，本申请实施例中的终端设备(或终端设备中的芯片)还可以通过判断下行参考信号的信号质量与信号质量阈值之间的大小关系，确定发起随机接入的上行载波。
本申请实施例中终端设备(或终端设备中的芯片)确定发起随机接入的上行载波的方法有多种，本申请实施例对此不作具体限定。
可选的，在本申请的另一种可能的实现方式中，在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波之前，终端设备(或终端设备中的芯片)还接收接入网设备发送的用于触发随机接入过程的第三信息。
本申请实施例中的终端设备(或终端设备中的芯片)可以根据接入网设备的指示发起随机接入，也可以根据自身需求发起随机接入，本申请实施例对此不作具体限定。
可选的，在本申请的另一种可能的实现方式中，上述第三信息为物理下行控制信道命令，物理下行控制信道命令包括第四信息和第五信息中的至少一个，第四信息包括接入网设备为有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，第五信息包括接入网设备为有随机接入资源的至少一个上行载波中每个上行载波所配置的无线网络临时标识(Radio Network Temporary Identifier，RNTI)。
在第三信息为物理下行控制信道命令，物理下行控制信道命令包括第四信息和第五信息中的至少一个的场景中，终端设备(或终端设备中的芯片)根据第四信息和第五信息中的至少一个能够确定出在上述有随机接入资源的至少一个上行载波中发起随机接入的上行载波。这样，终端设备(或终端设备中的芯片)根据第三信息直接在该终端设备(或终端设备中的芯片)确定出的发起随机接入的上行载波上发起随机接入。
结合前述“根据第二信息，确定上述发起随机接入的上行载波”可知，本申请实施例中的接入网设备可采用不同的方式向终端设备(或终端设备中的芯片)发送用于确定发起随机接入的上行载波的信息。
可选的，在本申请的另一种可能的实现方式中，在“有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波”之后，终端设备(或终端设备中的芯片)还确定上述发起随机接入的上行载波中当前被激活的子带，若当前被激活的子带不是预设子带，则该终端设备(或终端设备中的芯片)将当前被激活的子带切换为预设子带。在这种场景中，上述“在发起随机接入的上行载波上发起随机接入”的方法为：在发起随机接入的上行载波上通过预设子带中的随机接入资源发起随机接入。在某些文献中，子带又称宽带部分(bandwith parts，BWP)。
本申请实施例中的子带是指载波中一系列连续的物理资源块或资源块。预设子带是通信系统中有随机接入资源的上行载波中，预先被配置有随机接入资源的子带。现有的标准协议规定：终端设备采用载波中当前被激活的子带中的资源传输数据。某一载波中当前被激活的子带不一定是预设子带。当发起随机接入的上行载波中当前被激活的子带不是预设子带时，终端设备(或终端设备中的芯片)将发起随机接入的上行载波中当前被激活的子带切换为预设子带，提高了随机接入的成功率。
可选的，在本申请的另一种可能的实现方式中，终端设备(或终端设备中的芯片)还配置有第一计数器，该第一计数器用于记录重新发起随机接入的次数；或者，终端设备(或终端设备中的芯片)为上述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第二计数器，该第二计数器用于记录在对应上行载波上重新发起随机接入的次数。
可选的，在本申请的另一种可能的实现方式中，终端设备(或终端设备中的芯片)还配置有第三计数器和第一预设功率爬坡步长，该第三计数器用于记录在重新发起随机接入时发送功率的变化次数，发送功率的数值基于第一预设功率爬坡步长发生变化；或者，终端设备(或终端设备中的芯片)为上述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第四计数器和第二预设功率爬坡步长，该第四计数器用于记录在对应上行载波上重新发起随机接入时发送功率的变化次数，发送功率的数值基于与重新发起随机接入采用的上行载波对应的第二预设功率爬坡步长发生变化。
本申请实施例中的终端设备(或终端设备中的芯片)在发起随机接入的上行载波上发起随机接入时，可能会存在失败的情况。当终端设备(或终端设备中的芯片)发起的随机接入失败时，该终端设备(或终端设备中的芯片)可在上述发起随机接入的上行载波上重新发起随机接入，也可以采用本申请实施例提供的随机接入方法重新选择一个发起随机接入的上行载波，并在重新选择的发起随机接入的上行载波上再次发起随机接入。
第二方面，提供一种随机接入装置，该随机接入装置为应用于处于连接态、且被配置有至少两个上行载波的终端设备中的芯片或者终端设备。具体的，该随机接入装置包括通信单元和确定单元。
本申请提供的各个单元模块所实现的功能具体如下：
上述通信单元，用于接收接入网设备发送的第一信息，第一信息用于确定至少两个上行载波中有随机接入资源的至少一个上行载波。上述确定单元，用于根据上述通信单元接收到的第一信息，确定有随机接入资源的至少一个上行载波，以及用于在有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波。上述通信单元，还用于在上述确定单元确定出的发起随机接入的上行载波上发起随机接入。
可选的，在本申请的一种可能的实现方式中，上述通信单元，还用于接收接入网设备发送的第二信息，第二信息用于指示发起随机接入的上行载波。上述确定单元，具体用于根据接收单元接收到的第二信息，确定发起随机接入的上行载波。
可选的，在本申请的另一种可能的实现方式中，上述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1。在这种场景中，上述有随机接入资源的至少一个上行载波包括N个第二上行载波中的M个第二上行载波，上述发起随机接入的上行 载波为M个第二上行载波中的一个，N≥M≥1；或者，上述有随机接入资源的至少一个上行载波包括第一上行载波，上述发起随机接入的上行载波为第一上行载波；或者，上述发起随机接入的上行载波为有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波；或者，上述发起随机接入的上行载波为上述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波；或者，上述发起随机接入的上行载波为在调度请求失败触发随机接入过程的情况下，上述有随机接入资源的至少一个上行载波中发送调度请求使用的资源所在的上行载波。
可选的，在本申请的另一种可能的实现方式中，上述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1。本申请实施例提供的随机接入装置还包括获取单元，该获取单元用于获取接入网设备发送的下行参考信号的信号质量。若下行参考信号的信号质量小于信号质量阈值，上述有随机接入资源的至少一个上行载波包括N个第二上行载波中的M个第二上行载波，上述发起随机接入的上行载波为M个第二上行载波中的一个，N≥M≥1，信号质量阈值为接收自接入网设备的。
可选的，在本申请的另一种可能的实现方式中，上述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1。本申请实施例提供的随机接入装置还包括获取单元，该获取单元用于获取接入网设备发送的下行参考信号的信号质量。在下行参考信号的信号质量大于或等于信号质量阈值的情况下，上述有随机接入资源的至少一个上行载波包括第一上行载波，上述发起随机接入的上行载波为第一上行载波；或者，上述发起随机接入的上行载波为有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波；或者，上述发起随机接入的上行载波为上述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波；或者，上述发起随机接入的上行载波为在调度请求失败触发随机接入过程的情况下，上述有随机接入资源的至少一个上行载波中发送调度请求使用的资源所在的上行载波。
可选的，在本申请的另一种可能的实现方式中，上述通信单元，还用于在上述确定单元在有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波之前，接收接入网设备发送的第三信息，第三信息用于触发随机接入过程。
可选的，在本申请的另一种可能的实现方式中，上述第三信息为物理下行控制信道命令，物理下行控制信道命令包括第四信息和第五信息中的至少一个，该第四信息包括接入网设备为有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，该第五信息包括接入网设备为有随机接入资源的至少一个上行载波中每个上行载波所配置的RNTI。
可选的，在本申请的另一种可能的实现方式中，上述确定单元，还用于在有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波之后，确定发起随机接入的上行载波中当前被激活的子带。相应的，本申请实施例提供的随机接入装置还包括切换单元，该切换单元，用于若上述确定单元确定出的当前被激活的子带不是预设子带，则将当前被激活的子带切换为预设子带。相应的，上述通信单元，具体用于在发起随机接入的上行载波上通过上述切换单元切换成的预设子带中的随机接入资源发 起随机接入。
可选的，在本申请的另一种可能的实现方式中，本申请实施例提供的随机接入装置还包括第一配置单元，该第一配置单元用于配置第一计数器，该第一计数器用于记录重新发起随机接入的次数，或者用于为上述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第二计数器，该第二计数器用于记录在对应上行载波上重新发起随机接入的次数。
可选的，在本申请的另一种可能的实现方式中，本申请实施例提供的随机接入装置还包括第二配置单元，该第二配置单元用于配置第三计数器和第一预设功率爬坡步长，该第三计数器用于记录在重新发起随机接入时发送功率的变化次数，发送功率的数值基于第一预设功率爬坡步长发生变化，或者用于为上述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第四计数器和第二预设功率爬坡步长，该第四计数器用于记录在对应上行载波上重新发起随机接入时发送功率的变化次数，发送功率的数值基于与重新发起随机接入采用的上行载波对应的第二预设功率爬坡步长发生变化。
第三方面，提供一种终端设备，该终端设备包括：一个或多个处理器、存储器、通信接口。其中，存储器、通信接口与一个或多个处理器耦合；终端设备通过通信接口与接入网设备通信，存储器用于存储计算机程序代码，计算机程序代码包括指令，当一个或多个处理器执行指令时，终端设备执行如上述第一方面及其各种可能的实现方式所述的随机接入方法。
第四方面，还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令；当其在终端设备上运行时，使得终端设备执行如上述第一方面及其各种可能的实现方式所述的随机接入方法。
第五方面，还提供一种包含指令的计算机程序产品，当其在终端设备上运行时，使得终端设备执行如上述第一方面及其各种可能的实现方式所述的随机接入方法。
在本申请中，上述终端设备的名字对设备或功能模块本身不构成限定，在实际实现中，这些设备或功能模块可以以其他名称出现。只要各个设备或功能模块的功能和本申请类似，属于本申请权利要求及其等同技术的范围之内。
本申请中第二方面、第三方面、第四方面、第五方面及其各种实现方式的具体描述，可以参考第一方面及其各种实现方式中的详细描述；并且，第二方面、第三方面、第四方面、第五方面及其各种实现方式的有益效果，可以参考第一方面及其各种实现方式中的有益效果分析，此处不再赘述。
第六方面，提供一种随机接入方法，该随机接入方法应用于接入网设备或所述接入网设备中的芯片。具体的，接入网设备(或接入网设备中的芯片)向终端设备发送用于确定至少两个上行载波中有随机接入资源的至少一个上行载波的第一信息，这里的终端设备处于连接态、且被配置有上述至少两个上行载波；接入网设备(或接入网设备中的芯片)接收上述终端设备在上述有随机接入资源的至少一个上行载波中的发起随机接入的上行载波上发送的随机接入请求。
本申请实施例中的第一信息用于确定终端设备被配置的至少两个上行载波中有随机接入资源的至少一个上行载波，接入网设备(或接入网设备中的芯片)通过向终端 设备发送该第一信息，使得该终端设备根据第一信息即可确定出有随机接入资源的至少一个上行载波，进而从有随机接入资源的至少一个上行载波中确定出可发起随机接入的上行载波，以实现该终端设备完成随机接入。
可选的，在本申请的一种可能的实现方式中，接入网设备(或接入网设备中的芯片)还向上述终端设备发送用于指示所述发起随机接入的上行载波的第二信息。
可选的，在本申请的另一种可能的实现方式中，接入网设备(或接入网设备中的芯片)还向上述终端设备发送用于触发随机接入过程的第三信息。
可选的，在本申请的另一种可能的实现方式中，上述第三信息为物理下行控制信道命令，该物理下行控制信道命令包括第四信息和第五信息中的至少一个，该第四信息包括接入网设备为上述有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，该第五信息包括所述接入网设备为上述有随机接入资源的至少一个上行载波中每个上行载波所配置的RNTI。
第七方面，提供一种随机接入装置，该随机接入装置为接入网设备或所述接入网设备中的芯片。具体的，该随机接入装置包括处理单元、发送单元和接收单元。
本申请提供的各个单元模块所实现的功能具体如下：
上述处理单元，用于确定第一信息，该第一信息用于指示终端设备确定至少两个上行载波中有随机接入资源的至少一个上行载波，该终端设备处于连接态、且被配置有上述至少两个上行载波。上述发送单元，用于向终端设备发送上述处理单元确定出的第一信息，该终端设备处于连接态、且被配置有至少两个上行载波，该第一信息用于确定至少两个上行载波中有随机接入资源的至少一个上行载波。上述接收单元，用于接收终端设备在上述有随机接入资源的至少一个上行载波中的发起随机接入的上行载波上发送的随机接入请求。
可选的，在本申请的一种可能的实现方式中，上述发送单元，还用于向终端设备发送第二信息，该第二信息用于指示发起随机接入的上行载波。
可选的，在本申请的另一种可能的实现方式中，上述发送单元，还用于向终端设备发送第三信息，该第三信息用于触发随机接入过程。
可选的，在本申请的另一种可能的实现方式中，上述第三信息为物理下行控制信道命令，该物理下行控制信道命令包括第四信息和第五信息中的至少一个，该第四信息包括接入网设备为有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，该第五信息包括接入网设备为有随机接入资源的至少一个上行载波中每个上行载波所配置的RNTI。
第八方面，提供一种接入网设备，该接入网设备包括：一个或多个处理器、存储器、通信接口。其中，存储器、通信接口与一个或多个处理器耦合；接入网设备通过通信接口与终端设备通信，存储器用于存储计算机程序代码，计算机程序代码包括指令，当一个或多个处理器执行指令时，接入网设备执行如上述第六方面及其各种可能的实现方式所述的随机接入方法。
第九方面，还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令；当其在接入网设备上运行时，使得接入网设备执行如上述第六方面及其各种可能的实现方式所述的随机接入方法。
第十方面，还提供一种包含指令的计算机程序产品，当其在接入网设备上运行时，使得接入网设备执行如上述第六方面及其各种可能的实现方式所述的随机接入方法。
在本申请中，上述终端设备的名字对设备或功能模块本身不构成限定，在实际实现中，这些设备或功能模块可以以其他名称出现。只要各个设备或功能模块的功能和本申请类似，属于本申请权利要求及其等同技术的范围之内。
本申请中第七方面、第八方面、第九方面、第十方面及其各种实现方式的具体描述，可以参考第六方面及其各种实现方式中的详细描述；并且，第七方面、第八方面、第九方面、第十方面及其各种实现方式的有益效果，可以参考第六方面及其各种实现方式中的有益效果分析，此处不再赘述。
本申请的这些方面或其他方面在以下的描述中会更加简明易懂。
附图说明
图1为本申请实施例提供的通信系统的一种结构示意图；
图2为本申请实施例提供的通信系统的另一种结构示意图；
图3为本申请实施例提供的智能手机的硬件结构示意图；
图4为本申请实施例提供的基站的硬件结构示意图；
图5为本申请实施例提供的随机接入方法的流程示意图一；
图6为本申请实施例提供的随机接入方法的流程示意图二；
图7为本申请实施例提供的随机接入方法的流程示意图三；
图8为本申请实施例提供的随机接入方法的流程示意图四；
图9为本申请实施例提供的随机接入方法的流程示意图五；
图10为本申请实施例提供的随机接入装置的结构示意图一；
图11为本申请实施例提供的随机接入装置的结构示意图二；
图12为本申请实施例提供的随机接入装置的结构示意图三；
图13为本申请实施例提供的随机接入装置的结构示意图四；
图14为本申请实施例提供的随机接入装置的结构示意图五；
图15为本申请实施例提供的接入网设备的结构示意图。
具体实施方式
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请的说明书和权利要求书中的术语“第一”和“第二”等是用于区别不同的对象，而不是用于描述对象的特定顺序。例如，第一信息和第二信息等是用于区别不同的数据块，而不是用于描述数据块的特定顺序。
现有的通信系统中，为了能够尽可能的节省终端设备的功耗，为终端设备定义了多种通信状态。例如，如果终端设备与基站建立了通信连接，则定义终端设备处于连接(Connected)态(或Connected模式)。如果终端设备处于待机状态，则定义终端设备处于空闲(Idle)态(或者Idle模式)。
5G系统中，基站与终端设备之间采用高频资源完成业务通信，即二者发送数据 采用的载波为高频载波。一般的，终端设备的发送功率较低，这样，在5G系统中，当终端设备处于小区边缘区域、向基站发送信号时，由于高频信号在传输过程中传输损耗较大、且穿透能力较弱，因此，基站可能无法接收到该终端设备发送的信号，但是，该终端设备可以接收到基站通过高频下行链路发送的信号。这样就出现了上下行覆盖不对称的问题。
为了解决上下行覆盖不对称的问题，5G系统中的终端设备在某一小区中被配置有一个PUL和至少一个SUL，SUL归属的频段小于PUL归属的频段。SUL用于辅助终端设备传输上行数据。其中，终端设备在采用相同发射功率向基站发送上行数据时，在PUL上发送上行数据时的传输距离相较于在SUL上发送上行数据时的传输距离远。
需要说明的是，本申请中PUL和SUL这两个名称仅是用于区分原有的高频频段上行载波和引入的低频频段上行载波，随着通信技术的演进，PUL和SUL这一名称可能会变化，本申请实施例在此并未做具体的限制。
在终端设备在某一小区中被配置有一个PUL和至少一个SUL的场景中，处于Idle态的终端设备可以通过判断下行参考信号的RSRP与预设的RSRP阈值之间的大小关系，在PUL和至少一个SUL中确定出的发起随机接入的上行载波。
示例性的，如图1所示，通信系统包括基站、终端设备1以及终端设备2，基站为终端设备1和终端设备2均提供服务，终端设备1和终端设备2位于该基站对应的某一小区中、均被配置有一个PUL和一个SUL、且均处于Idle态。若终端设备1确定下行参考信号的RSRP大于或等于预设的RSRP阈值，则表明终端设备1位于该小区的中心区域，此时终端设备1可以选择PUL发起随机接入。若终端设备2确定下行参考信号的RSRP小于预设的RSRP阈值，则表明终端设备2位于该小区的边缘区域，终端设备2可选择SUL发起随机接入。
但是，在终端设备在某一小区中被配置有一个PUL和至少一个SUL的场景中，目前还不存在处于连接态(Connected)的终端设备如何确定发起随机接入的上行载波，以实现该终端设备完成随机接入的方法。
针对上述问题，本申请实施例提供一种随机接入方法，该随机接入方法应用于处于连接态、且被配置有至少两个上行载波的终端设备中的芯片或者所述终端设备。终端设备(或终端设备中的芯片)在接收到接入网设备发送的用于确定上述至少两个上行载波中有随机接入资源的至少一个上行载波的第一信息后，在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波，这样，该终端设备(或终端设备中的芯片)即可在上述发起随机接入的上行载波上发起随机接入。
本申请实施例提供的随机接入方法适用于通信系统。该通信系统可以是5G系统，也可以是LTE系统，还可以是其他为终端设备被配置有至少两个上行载波的通信系统，本申请实施例对此不作具体限定。
图2是本申请实施例提供的通信系统的结构示意图。参见图2，该通信系统包括多个终端设备和接入网设备21，每个终端设备与接入网设备21之间可以通过无线电波进行数据传输，也可以通过可见光、激光、红外、光量子、电力线、光纤、同轴电缆、铜绞线等进行数据传输。每个终端设备被配置有至少两个上行载波，例如，至少两个上行载波包括一个PUL和至少一个SUL。
图2示出了6个终端设备，这6个终端设备分别为终端设备1、终端设备2、终端设备3、终端设备4、终端设备5、终端设备6。图2中的终端设备4、终端设备5以及终端设备6还组成一个设备到设备(Device to Device，D2D)通信系统，终端设备4和终端设备6分别通过终端设备5与接入网设备21通信。
本申请实施例中的终端设备可以是指能够接收接入网设备21发送的调度信息和指示信息的无线终端设备。无线终端设备可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。例如，该无线终端设备为MTU UE。
无线终端设备可以经无线接入网(例如，RAN，英文：Radio Access Network)与一个或多个核心网进行通信。无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，也可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据，例如，手机、平板电脑、笔记本电脑、上网本、个人数字助理(Personal Digital Assistant，PDA)。该无线终端设备也可以称为终端设备。
示例性的，在本申请实施例中，图2所示的终端设备可以为智能手机，下面结合图3对智能手机的各个构成部件进行具体的介绍。
如图3所示，智能手机包括：处理器31，射频(Radio Frequency，RF)电路32、电源33、存储器34、输入单元35、显示单元36、音频电路37等部件。
本领域技术人员可以理解，图3中示出的智能手机的结构并不构成对智能手机的限定，其可以包括比如图3所示的部件更多或更少的部件，或者可以组合如图3所示的部件中的某些部件，或者可以与如图3所示的部件布置不同。
处理器31是智能手机的控制中心，利用各种接口和线路连接整个智能手机的各个部分，通过运行或执行存储在存储器34内的软件程序和/或模块，以及调用存储在存储器34内的数据，执行智能手机的各种功能和处理数据，从而对智能手机进行整体监控。可选的，处理器31可包括一个或多个处理单元。处理器31可集成应用处理器和调制解调处理器。其中，应用处理器主要处理操作系统、用户界面和应用程序等；调制解调处理器主要处理无线通信。可选的，应用处理器和调制解调处理器可以是相互独立设置的，也可以是集成在同一设备的。
RF电路32可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器31处理；另外，将上行的数据发送给基站。通常，RF电路包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，LNA)、双工器等。此外，RF电路32还可以通过无线通信与网络和其他设备通信。无线通信可以使用任一通信标准或协议，包括但不限于全球移动通讯系统(Global System of Mobile Communication，GSM)、通用分组无线服务(General Packet Radio Service，GPRS)、码分多址(Code Division Multiple Access，CDMA)、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)、LTE、电子邮件、短消息服务(Short Messaging Service，SMS)等。
智能手机包括给各个部件供电的电源33(比如电池)，可选的，电源可以通过电源管理系统与处理器31逻辑相连，从而通过电源管理系统实现管理充电、放电、以及 功耗管理等功能。
存储器34可用于存储软件程序以及模块，处理器31通过运行存储在存储器34的软件程序以及模块，从而执行智能手机的各种功能应用以及数据处理。
存储器34可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如发起随机接入)等；存储数据区可存储根据智能手机的使用所创建的数据(比如音频数据、电话本)等。此外，存储器34可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
输入单元35可用于接收输入的数字或字符信息，以及产生与智能手机的用户设置以及功能控制有关的键信号输入。具体地，输入单元35可包括触摸屏351和其他输入设备352。
触摸屏351，也称为触摸面板，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触摸屏351上或在触摸屏351附近的操作)，并根据预先设定的程式驱动相应的连接装置。可选的，触摸屏351可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器31，并能接收处理器31发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触摸屏351。
显示单元36可用于显示由用户输入的信息或提供给用户的信息以及智能手机的各种菜单。显示单元36可包括显示面板361，可选的，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-emitting Diode，OLED)等形式来配置显示面板361。
进一步的，触摸屏351可覆盖显示面板361，当触摸屏351检测到在其上或附近的触摸操作后，传送给处理器31以确定触摸事件的类型，随后处理器3根据触摸事件的类型在显示面板361上提供相应的视觉输出。虽然，在图3中，触摸屏351与显示面板361是作为两个独立的部件来实现智能手机的输入和输出功能，但是在某些实施例中，可以将触摸屏351与显示面板361集成而实现智能手机的输入和输出功能。
音频电路37、扬声器371和麦克风372，用于提供用户与智能手机之间的音频接口。音频电路37可将接收到的音频数据转换后的电信号，传输到扬声器371，由扬声器371转换为声音信号输出；另一方面，麦克风372将收集的声音信号转换为电信号，由音频电路37接收后转换为音频数据，再将音频数据输出至RF电路32以发送给比如另一智能手机，或者将音频数据输出至存储器34以便进一步处理。
可选的，智能手机还可以包括各种传感器(如陀螺仪传感器、湿度计传感器、红外线传感器或磁力计传感器)、Wi-Fi模块、蓝牙模块、外壳等。图3中并未示出。
本申请实施例中的接入网设备21与每个终端设备通信。该接入网设备21是具有中心控制功能的设备，如基站、热点(pico)、传输点(TP)、中继(Relay)、接入点(Access Point，AP)等。其中，基站可以是无线通信的基站(Base Station，BS)或基站控制器等。
具体的，接入网设备21是一种部署在无线接入网中用以为终端设备提供无线通信功能的装置，其可以与终端设备进行连接，接收终端设备发送的数据并发送给核心网设备。
接入网设备的主要功能包括如下一个或多个功能：进行无线资源的管理、互联网协议(Internet Protocol，IP)头的压缩及用户数据流的加密、终端设备附着时进行移动管理实体(Mobility Management Entity，MME)的选择、路由用户面数据至服务网关(Service Gateway，SGW)、寻呼消息的组织和发送、广播消息的组织和发送、以移动性或调度为目的的测量及测量报告的配置等等。
在采用不同的无线接入技术的系统中，接入网设备21的名称可能会有所不同。例如：在LTE网络(或称为第4代移动通信技术(the fourth Generation Telecommunication，4G)系统)中，接入网设备21的名称为演进的基站(evolved NodeB，eNB或eNodeB)；在第3代移动通信技术(the third Generation Telecommunication，3G)系统中，接入网设备21的名称为基站(Node B)；在下一代无线通信系统(如5G系统)中，接入网设备21的名称为gNB；在无线本地接入系统中，接入网设备21的名称为接入点(Access Ponit)。随着通信技术的演进，这一名称可能会变化。此外，在其它可能的情况下，接入网设备21可以是其它为终端设备提供无线通信功能的装置。为方便描述，本申请实施例中，为终端设备提供无线通信功能的装置称为接入网设备。
示例性的，在本申请实施例中，图2所示的接入网设备21可以为基站，下面结合图4对基站的各个构成部件进行具体的介绍。
如图4所示，基站包括：基带处理单元(Base Band Unit，BBU)、射频拉远单元(Radio Remote Unit，RRU)和天线，BBU和RRU之间可以用光纤连接，RRU再通过同轴电缆及功分器(耦合器)连接至天线，一般一个BBU可以连接多个RRU。
RRU可以包括4个模块：数字中频模块、收发信机模块、功放模块和滤波模块。数字中频模块用于光传输的调制解调、数字上下变频、数模转换等；收发信机模块完成中频信号到射频信号的变换；再经过功放模块放大以及滤波模块滤波后，将射频信号通过天线发射出去。
BBU用于完成Uu接口(即终端设备与基站之间的接口)的基带处理功能(编码、复用、调制和扩频等)、无线网络控制器(Radio Network Controller，RNC)和基站之间的逻辑接口的接口功能、信令处理、本地和远程操作维护功能，以及基站系统的工作状态监控和告警信息上报功能等。
下面将详细介绍本申请提供的随机接入方法。
图5为本申请实施例提供的一种随机接入方法的流程示意图，该随机接入方法可以应用在图2所示的通信系统中。如图5所示，本申请实施例提供的随机接入方法中，S500和S501由图2所示的接入网设备21执行，具体可由接入网设备21中的处理器执行。另外，S502和S503由图2所示的终端设备执行，具体可由终端设备中的处理器执行。实际应用中，接入网设备中的处理器和终端设备中的处理器均可以芯片的形式存在。本申请实施例中的终端设备在一个小区中被配置有至少两个上行载波。为了便于描述，后续内容所涉及到的终端设备均用于表示在一个小区中被配置有至少两个上行载波的终端设备。
为了便于描述，本申请实施例均以终端设备和接入网设备为例进行说明。
参见图5，该随机接入方法包括如下步骤。
S500、接入网设备向终端设备发送第一信息，该第一信息用于确定至少两个上行载波中有随机接入资源的至少一个上行载波。
可选的，接入网设备通过无线资源控制(Radio Resource Control，RRC)信令发送第一信息，还可以通过其他高层信令发送第一信息，本申请实施例对此不作具体限定。
在第一种实现方式中，本申请实施例中的第一信息可以包括随机接入资源的时域信息以及随机接入资源的频域信息。
在这种场景中，终端设备基于其被配置的至少两个上行载波，根据随机接入资源的时域信息和随机接入资源的频域信息即可确定出至少两个上行载波中有随机接入资源的上行载波。
在第二种实现方式中，本申请实施例中的第一信息可以包括随机接入资源的时域信息、随机接入资源的频域信息以及至少两个上行载波中某些上行载波的标识。
在这种场景中，终端设备根据第一信息包括的至少两个上行载波中某些上行载波的标识即可直接确定出至少两个上行载波中有随机接入资源的上行载波。
除了上述描述，本申请实施例中的第一信息还可以为其他能够用于确定至少两个上行载波中有随机接入资源的至少一个上行载波，本申请实施例对此不作具体限定。
S501、接入网设备向终端设备发送第二信息，该第二信息用于指示发起随机接入的上行载波。
具体的，接入网设备根据上述有随机接入资源的至少一个上行载波中每个上行载波的负载，确定能够用于发起随机接入的上行载波，并向终端设备发送第二信息，该第二信息用于指示发起随机接入的上行载波。
可选的，第二信息为发起随机接入的上行载波的在至少两个上行载波中的编号，也可以为其他能够用于表示发起随机接入的上行载波的标识，本申请实施例对此不作具体限定。
本实施例中，接入网设备可通过RRC配置信令向终端设备发送第二信息，也可以通过RRC重配置信令向终端设备发送第二信息，还可以通过其他RRC信令向终端设备发送第二信息，本申请实施例对此不作具体限定。
S502、终端设备根据第二信息，确定发起随机接入的上行载波。
可选的，在终端设备的调度请求失败的情况下，或者在终端设备没有可用的用于调度请求的资源的情况下，该终端设备触发发起随机接入过程。
需要说明的是，本申请实施例中的终端设备还可在其他情况下触发发起随机接入过程，本申请实施例对此不作具体限定。
在终端设备需要发起随机接入的场景中，该终端设备需确定出发起随机接入的上行载波。由于第二信息用于指示发起随机接入的上行载波，这样，终端设备在接收到接入网设备发送的第二信息后，根据第二信息即可直接确定出发起随机接入的上行载波。
S503、终端设备在确定出的发起随机接入的上行载波上发起随机接入。
在S502中，终端设备确定出了发起随机接入的上行载波，这样，该终端设备直接在确定出的发起随机接入的上行载波上发起随机接入。具体的，该终端设备在确定出的发起随机接入的上行载波上向接入网设备发送包括前导序列(preamble)的随机接入请求。相应的，接入网设备会向终端设备发送对应的随机接入响应。
目前，一个载波被配置有四个子带，在某些文献中子带又称为BWP(Bandwidth Part)。在同一时间，一个载波中的四个子带中只有一个子带会被激活。子带由一系列连续的资源块(Resource Block，RB)或者物理资源块(Physical Resource Block，PRB)构成。NR中规定：终端设备采用载波中当前被激活的子带中的资源传输数据。
但是，载波中当前被激活的子带不一定有资源。为了保证终端设备能够成功的完成随机接入，本申请实施例将通信系统中有随机接入资源的载波中，预先被配置有资源的BWP统称为预设BWP。例如：预设BWP为初始BWP(Initial BWP)、默认BWP(default BWP)或小区自定义BWP(cell defining BWP)。这样，终端设备在发起随机接入的上行载波上通过预设BWP中的随机接入资源即可完成随机接入。
需要说明的是，BWP仅为子带的名称的一种表现形式。随着通信技术的演进，BWP的这一名称可能会变化，本申请实施例对此不作具体限定。
具体的，终端设备在确定出发起随机接入的上行载波后，确定该发起随机接入的上行载波中当前被激活的子带；该终端设备判断该发起随机接入的上行载波中当前被激活的子带是否为该发起随机接入的上行载波中的预设子带；若该发起随机接入的上行载波中当前被激活的子带不是该发起随机接入的上行载波中的预设子带，则该终端设备将该发起随机接入的上行载波中当前被激活的子带切换为该发起随机接入的上行载波中的预设子带，并在该发起随机接入的上行载波上通过该发起随机接入的上行载波的预设子带中的随机接入资源发起随机接入；若该发起随机接入的上行载波中当前被激活的子带是该发起随机接入的上行载波中的预设子带，则该终端设备在该发起随机接入的上行载波上通过该发起随机接入的上行载波中当前被激活子带中的随机接入资源发起随机接入。
本实施例中的终端设备根据接入网设备的指示，确定发起随机接入的上行载波，并在该发起随机接入的上行载波上发起随机接入，实现了对随机接入资源的灵活调度，避免了通信系统负载不均衡的情况。
本申请提供的随机接入方法中，终端设备可以根据接入网设备的指示，确定发起随机接入的上行载波，也可以根据需求，自主确定发起随机接入的上行载波。图5所示的实施例描述了终端设备根据接入网设备的指示，确定发起随机接入的上行载波的过程。现对终端设备根据需求，自主确定发起随机接入的上行载波的过程。
如图6所示，本申请实施例提供的随机接入方法中，S600由图2所示的接入网设备21执行，具体可由接入网设备21中的处理器执行。另外，S601、S602和S603由图2所示的终端设备执行，具体可由终端设备中的处理器执行。
参见图6，本申请实施例提供的随机接入方法包括如下步骤。
S600、接入网设备向终端设备发送第一信息，该第一信息用于确定至少两个上行载波中有随机接入资源的至少一个上行载波。
S600可以参考上述S500，这里不再进行详细赘述。
S601、终端设备根据第一信息，确定上述有随机接入资源的至少一个上行载波。
S602、终端设备在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波。
可选的，在终端设备的调度请求失败的情况下，或者在终端设备没有可用的用于调度请求的资源的情况下，该终端设备触发发起随机接入过程。
需要说明的是，本申请实施例中的终端设备还可在其他情况下触发发起随机接入过程，本申请实施例对此不作具体限定。
在终端设备需要发起随机接入的场景中，该终端设备自主在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波。
本申请实施例中至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1。这里，第一上行载波可以为上述PUL，第二上行载波可以为上述SUL。在这种情况下，终端设备自主在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波的方法可以为下述任意一种：
A、终端设备选取M个第二上行载波中的一个，并将选取出的第二上行载波确定为发起随机接入的上行载波。
上述有随机接入资源的至少一个上行载波包括N个第二上行载波中的M个第二上行载波。
B、在上述有随机接入资源的至少一个上行载波包括第一上行载波的情况下，终端设备确定该第一上行载波为发起随机接入的上行载波。
C、终端设备将上述有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波确定为发起随机接入的上行载波。
D、终端设备将上述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波确定为发起随机接入的上行载波。
本申请实施例中的终端设备可以基于传输时间间隔(Transmission Time Interval，TTI)确定时间差。
E、在调度请求失败(Scheduling Request Failure，SR Failure)触发随机接入过程的情况下，终端设备将上述有随机接入资源的至少一个上行载波中发送所述调度请求使用的资源所在的上行载波确定为发起随机接入的上行载波。
S603、终端设备在确定出的发起随机接入的上行载波上发起随机接入。
S603参考上述S503的描述，这里不再对此进行详细赘述。
本实施例中的终端设备根据自身需求，自主确定发起随机接入的上行载波，并在确定出的发起随机接入请求的上行载波上发起随机接入请求。
除了上述图6所示的随机接入方法之外，本申请实施例中的接入网设备还可以向终端设备发送信号质量阈值，这样，终端设备可以通过判断下行参考信号的信号质量与信号质量阈值之间的大小关系，在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波。
如图7所示，本申请实施例提供的随机接入方法中，S700、S701和S702由图2所示的接入网设备21执行，具体可由接入网设备21中的处理器执行。另外，S703、S704和S705由图2所示的终端设备执行，具体可由终端设备中的处理器执行。
具体的，如图7所示，本申请实施例提供的随机接入方法包括如下步骤。
S700、接入网设备向终端设备发送信号质量阈值。
接入网设备配置信号质量阈值，并通过RRC配置信令或RRC重配置信令向终端设备发送其配置的信号质量阈值。
可选的，接入网设备可定时或周期性的向终端设备发送信号质量阈值，也可以根据至少两个上行载波的负载实时确定信号质量阈值，并在信号质量阈值发生变化时向终端设备变化后的信号质量阈值，本申请实施例对此不作具体限定。
本申请实施例中的信号质量可以用RSRP衡量，也可以用信号强度衡量，其他能够表示信号强度的参数衡量，本申请实施例对此不作具体限定。
S701、接入网设备向终端设备发送下行参考信号。
S702、接入网设备向终端设备发送第一信息，该第一信息用于确定至少两个上行载波中有随机接入资源的至少一个上行载波。
S702可以参考上述S500，这里不再进行详细赘述。
接入网设备可以同时执行S700、S701以及S702，也可以先执行S700，后执行S701，最后执行S702，本申请实施例对此不作具体限定。
S703、终端设备获取下行参考信号的信号质量。
具体的，终端设备在获取到下行参考信号之后，测量下行参考信号的信号质量。
可选的，终端设备在接收到下行参考信号后，可以周期性测量该下行参考信号的信号质量，也可以定时测量该下行参考信号的信号质量，还可以在有发起随机接入的需求时测量该下行参考信号的信号质量，本申请实施例对此不作具体限定。
S704、终端设备判断下行参考信号的信号质量是否大于或等于信号质量阈值。
本实施例中的终端设备根据对下行参考信号的信号质量与信号质量阈值的大小判断结果，从有随机接入资源的至少一个上行载波中确定出发起随机接入的上行载波。具体的，若下行参考信号的信号质量小于信号质量阈值，终端设备执行S705；若下行参考信号的信号质量大于或等于信号质量阈值，终端设备执行S706a，或执行S706b，或执行S706c，或执行S706d。
S705、终端设备选取M个第二上行载波中的一个，并将选取出的第二上行载波确定为发起随机接入的上行载波。
有随机接入资源的至少一个上行载波包括所述N个第二上行载波中的M个第二上行载波。
S705与上述终端设备确定发起随机接入的上行载波方法A相同。
S706a、在上述有随机接入资源的至少一个上行载波包括第一上行载波的情况下，终端设备确定该第一上行载波为发起随机接入的上行载波。
S706a与上述终端设备确定发起随机接入的上行载波方法B相同。
S706b、终端设备将上述有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波确定为发起随机接入的上行载波。
S706b与上述终端设备确定发起随机接入的上行载波方法C相同。
S706c、终端设备将上述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波确定为发起随机接入的上行载波。
S706c与上述终端设备确定发起随机接入的上行载波方法D相同。
S706d、在调度请求失败触发随机接入过程的情况下，终端设备将上述有随机接入资源的至少一个上行载波中发送所述调度请求使用的资源所在的上行载波确定为发起随机接入的上行载波。
S706d与上述终端设备确定发起随机接入的上行载波方法E相同。
S707、终端设备在确定出的发起随机接入的上行载波上发起随机接入。
S707参考上述S503，这里不再进行详细赘述。
从图6示出的实施例以及图7示出的实施例可以看出，本申请实施例中的终端设备可采用不同的方式，灵活的选择发起随机接入的上行载波，并在确定出的发起随机接入的上行载波上发起随机接入。
上述图5、图6以及图7所示的实施例，均为终端设备在有发起随机接入的需求后，该终端设备确定发起随机接入的上行载波。也就是说，上述图5、图6以及图7所示的实施例，均为终端设备自身触发随机接入过程。本申请实施例提供的随机接入方法，除了终端设备自身触发随机接入过程之外，还可以为接入网设备向终端设备发送相关信息，用于触发随机接入过程。
如图8所示，本申请实施例提供的随机接入方法中，S800和S801由图2所示的接入网设备21执行，具体可由接入网设备21中的处理器执行。另外，S802和S803由图2所示的终端设备执行，具体可由终端设备中的处理器执行。
具体的，如图8所示，本申请实施例提供的随机接入方法包括如下步骤。
S800、接入网设备向终端设备发送第一信息，该第一信息用于确定至少两个上行载波中有随机接入资源的至少一个上行载波。
S800可以参考上述S500，这里不再进行详细赘述。
S801、接入网设备向终端设备发送第三信息，该第三信息用于触发随机接入过程。
可选的，第三信息可以为RRC信令，也可以为物理下行控制信道命令(如PDCCH order)，本申请实施例对此不作具体限定。
在第三信息为物理下行控制信道命令的场景中，该物理下行控制信道命令包括第四信息和第五信息中的至少一个。其中，第四信息包括接入网设备为上述有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，这里，上行载波的调度信息的搜索空间位置信息可以为上行载波的调度信息的搜索空间的起始位置信息。第五信息包括接入网设备为上述有随机接入资源的至少一个上行载波中每个上行载波所配置的RNTI。
S802、终端设备在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波。
若S801中的第三信息为RRC信令，则终端设备可采用图6所示实施例中确定发起随机接入的上行载波的方法确定发起随机接入的上行载波，即这里参考上述S602的描述。
若S801中的第三信息为物理下行控制信道命令，当物理下行控制信道命令包括第四信息时，终端设备在第四信息指示的搜索空间起始位置所对应的随机接入资源中获取某一上行载波对应的下行控制信息(Downlink Control Information，DCI)。这样， 终端设备即可将与获取到的DCI所在的搜索空间位置对应的上行载波确定为发起随机接入的上行载波。
若S801中的第三信息为物理下行控制信道命令，当物理下行控制信道命令包括第五信息时，终端设备根据第五信息对随机接入资源中的DCI进行解码，这样，该终端设备能够获取某一上行载波对应的DCI。在使用与某一上行载波对应的RNTI成功解码出一个DCI后，终端设备即可将与解码使用的RNTI对应的上行载波确定为发起随机接入的上行载波。
S803、响应于第三信息，终端设备在确定出的发起随机接入的上行载波上发起随机接入。
由于第三信息为接入网设备触发发起随机接入，因此，在接收到第三信息后，终端设备响应该第三信息，在确定出的发起随机接入的上行载波上发起随机接入。
S803可以参考上述S503的描述。不同的是，上述S503为终端设备自身触发的随机接入，而S803为接入网设备通过信令指示终端设备触发的随机接入。
可选的，图8所示的实施例中，在终端设备确定发起随机接入的上行载波之前接入网设备还可以向终端设备发送用于指示发起随机接入的上行载波的第二信息，这样，终端设备根据第二信息即可直接确定出发起随机接入的上行载波。
结合图8，如图9所示，本申请实施例提供的随机接入方法在S802之前还包括如下步骤。
S804(可选的)、接入网设备向终端设备发送第二信息，该第二信息用于指示发起随机接入的上行载波。
S804可以参考上述S501的描述，这里不再进行详细赘述。
由于S804中第二信息用于指示发起随机接入的上行载波，因此，在图9所示的实施例的S802中，终端设备直接根据第二信息确定发起随机接入的上行载波，即与上述S502相同，这里不再进行详细赘述。
由于S804是可选的，因此图9中用虚线表示。
综上所述，本申请实施例中的终端设备既可根据接入网设备的指示触发随机接入，也可根据自身需求触发随机接入。同时，该终端设备既可根据接入网设备的指示确定发起随机接入的上行载波，也可自主确定发起随机接入的上行载波，有效的提高了随机接入的成功率，节约了系统开销，实现了系统中负载的均衡。
上述各实施例均描述了终端设备发起随机接入的过程。实际应用中，终端设备发起随机接入后，会存在随机接入失败的可能。在随机接入失败的场景中，本申请实施例中的终端设备可重新发起随机接入。
可选的，本申请实施例中的终端设备可以配置有第一计数器，该第一计数器用于记录终端设备重新发起随机接入的次数。
具体的，当终端设备在上述发起随机接入的上行载波上发起的随机接入过程失败后，终端设备重新发起随机接入，第一计数器的数值加一，直至第一计数器的数值达到该第一计数器的最大阈值。
需要说明的是，本申请中终端设备重新发起随机接入采用的上行载波与上一次发起随机接入采用的上行载波可以相同，也可以不同。终端设备重新发起随机接入采用 的上行载波可以根据上述图5～图9中任一实施例所示的方法确定，本申请实施例对此不作具体限定。
可选的，本申请实施例中上述有随机接入资源的至少一个上行载波中的每个上行载波分别配置有第二计数器，这里，第二计数器用于记录终端设备在对应上行载波上重新发起随机接入的次数。
具体的，在第一种实现方式中，当终端设备在上述发起随机接入的上行载波上发起的随机接入过程失败后，终端设备重新在该发起随机接入的上行载波上发起随机接入，与该发起随机接入的上行载波对应的第二计数器的数值加一，直至与该发起随机接入的上行载波对应的第二计数器的数值达到该第二计数器的最大阈值。
在第二种实现方式中，在上述发起随机接入的上行载波为接入网设备指定的场景中，当终端设备在上述发起随机接入的上行载波上发起的随机接入过程失败后，终端设备重新在该发起随机接入的上行载波上发起随机接入，此时，与该发起随机接入的上行载波对应的第二计数器的数值加一，直至与该发起随机接入的上行载波对应的第二计数器的数值达到该第二计数器的最大阈值。
在第三种实现方式中，当终端设备在上述发起随机接入的上行载波上发起的随机接入过程失败后，终端设备重新在发起随机接入，此时，与终端设备重新发起随机接入的上行载波对应的第二计数器的数值加一。每个第二计数器设置有一个最大阈值，当有随机接入资源的至少一个上行载波中的每个上行载波的第二计数器的数值均达到各自最大阈值时，终端设备发起随机接入的次数达到最大值。这里，每个第二计数器的最大阈值可以相同，也可以不同，本申请实施例对此不作具体限定。
可选的，本申请实施例中的终端设备配置有第一计数器，而且上述有随机接入资源的至少一个上行载波中的每个上行载波分别配置有第二计数器，第一计数器用于记录终端设备重新发起随机接入的次数，第二计数器用于记录终端设备在对应上行载波上重新发起随机接入的次数。
具体的，在第一种实现方式中，当终端设备在上述发起随机接入的上行载波上发起的随机接入过程失败后，终端设备重新在该发起随机接入的上行载波上发起随机接入，此时，第一计数器的数值加一，且与该发起随机接入的上行载波对应的第二计数器的数值加一。第一计数器设置有第一最大阈值，该发起随机接入的上行载波对应的第二计数器设置有第二最大阈值，当第一计数器的数值达到第一最大阈值和/或与该发起随机接入的上行载波对应的第二计数器的数值达到第二最大阈值时，终端设备发起随机接入的次数达到最大值。
在第二种实现方式中，在上述发起随机接入的上行载波为接入网设备指定的场景中，当终端设备在上述发起随机接入的上行载波上发起的随机接入过程失败后，终端设备重新在该发起随机接入的上行载波上发起随机接入，此时，第一计数器的数值加一，且与该发起随机接入的上行载波对应的第二计数器的数值加一。第一计数器设置有第一最大阈值，该发起随机接入的上行载波对应的第二计数器设置有第二最大阈值，当第一计数器的数值达到第一最大阈值和/或与该发起随机接入的上行载波对应的第二计数器的数值达到第二最大阈值时，终端设备发起随机接入的次数达到最大值。
需要说明的是，上述描述仅仅是对本申请实施例中终端设备重新发起随机接入的 举例说明，并不是对本申请实施例中终端设备重新发起随机接入的限定。当然，本申请实施例中终端设备重新发起随机接入的过程中，该终端设备还可以根据其他方式确定是否还需重新发起随机接入。
本申请实施例中的终端设备在重新发起随机接入的过程中，该终端设备的发送功率可以发生变化。
可选的，本申请实施例中的终端设备可以配置由第三计数器和第一预设功率爬坡步长，该第三计数器用于记录在终端设备重新发起随机接入时发送功率的变化次数，终端设备的发送功率的数值基于第一预设功率爬坡步长发生变化。
具体的，在第一种实现方式中，当终端设备重新发起随机接入时，第三计数器的数值加一，该终端设备的发送功率根据第一预设功率爬坡步长变化。第三计数器设置有最大阈值，当第三计数器的数值达到该最大阈值后，终端设备的发送功率不再发生变化。假设第三计数器的数值为最大阈值时，终端设备的发送功率为第一发送功率。在第三计数器的数值达到该最大阈值后，若终端设备还重新发起随机接入，则该终端设备按照第一发送功率发起随机接入。
在第二种实现方式中，当终端设备重新发起随机接入，且重新发起随机接入采用的上行载波与上一次发起随机接入采用的上行载波相同时，第三计数器的数值加一，该终端设备的发送功率根据第一预设功率爬坡步长变化。第三计数器设置有最大阈值，当第三计数器的数值达到该最大阈值后，终端设备的发送功率不再发生变化。假设第三计数器的数值为最大阈值时，终端设备的发送功率为第一发送功率。在第三计数器的数值达到该最大阈值后，若终端设备还重新发起随机接入，则该终端设备按照第一发送功率发起随机接入。
可选的，本申请实施例中上述有随机接入资源的至少一个上行载波中的每个上行载波分别被配置有第四计数器和第二预设功率爬坡步长，该第四计数器用于记录终端设备在对应上行载波上重新发起随机接入时发送功率的变化次数，终端设备的发送功率的数值基于与重新发起随机接入采用的上行载波对应的第二预设功率爬坡步长发生变化。
其中，上述有随机接入资源的至少一个上行载波中的每个上行载波被配置的第二预设功率爬坡步长可以相同，也可以不同，本申请实施例对此不作具体限定。
具体的，当终端设备重新发起随机接入，且重新发起随机接入采用的上行载波与上一次发起随机接入采用的上行载波相同时，第四计数器的数值加一，该终端设备的发送功率根据与该上行载波对应的第二预设功率爬坡步长变化。第四计数器设置有最大阈值，当第四计数器的数值达到该最大阈值后，终端设备的发送功率不再发生变化。假设第四计数器的数值为最大阈值时，终端设备的发送功率为第二发送功率。在第四计数器的数值达到该最大阈值后，若终端设备还重新在该上行载波上发起随机接入，则该终端设备按照第二发送功率发起随机接入。
综上所述，本申请实施例中的终端设备在接收到接入网设备发送的用于确定上述至少两个上行载波中有随机接入资源的至少一个上行载波的第一信息后，在上述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波，这样，该终端设备即可在上述发起随机接入的上行载波上发起随机接入。
本申请实施例提供一种随机接入装置100，该随机接入装置100可以为应用于处于连接态、且被配置有至少两个上行载波的终端设备中的芯片或者所述终端设备。该随机接入装置100用于执行以上随机接入方法中的终端设备所执行的步骤。本申请实施例提供的随机接入装置100可以包括相应步骤所对应的模块。
本申请实施例可以根据上述方法示例对随机接入装置100进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。本申请实施例中对模块的划分是示意性的，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。
在采用对应各个功能划分各个功能模块的情况下，图10示出随机接入装置100的一种可能的结构示意图。如图10所示，随机接入装置100包括通信单元10和确定单元11。通信单元10用于支持该随机接入装置100执行图5所示实施例中的S500、S501和S503，图6所示实施例中的S600和S603，图7所示实施例中的S700、S701、S702和S707，图8所示实施例中的S800、S801和S803，图9所示实施例中的S804，和/或用于本文所描述的技术的其它过程；确定单元71用于支持该随机接入装置100执行图5所示实施例中的S502，图6所示实施例中的S601和S602，图7所示实施例中的S705、S706a、S706b、S706c和S706d，图8所示实施例中的S802，和/或用于本文所描述的技术的其它过程。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
此外，结合图10，如图11所示，随机接入装置100还包括获取单元12、切换单元13、第一配置单元14和第二配置单元15。获取单元12用于支持该随机接入装置100执行图7所示实施例中的S703，和/或用于本文所描述的技术的其它过程；切换单元13用于支持该随机接入装置100从当前被激活子带切换为预设子带，和/或用于本文所描述的技术的其它过程；第一配置单元14用于支持该随机接入装置100配置第一计数器/第二计数器，和/或用于本文所描述的技术的其它过程；第二配置单元15用于支持该随机接入装置100配置第三计数器/第四计数器，和/或用于本文所描述的技术的其它过程。当然，本申请实施例提供的随机接入装置100包括但不限于上述模块，例如随机接入装置100还可以包括存储单元。存储单元可以用于存储该随机接入装置100的程序代码。
在采用集成的单元的情况下，图12示出了上述实施例中所涉及的随机接入装置100的一种可能的结构示意图。
如图12所示，该随机接入装置100包括：处理模块1001和通信模块1002。处理模块1001用于对该随机接入装置100的动作进行控制管理，例如，处理模块1001用于支持该随机接入装置100执行上述方法实施例中的S502、S601、S602、S705、S706a、S706b、S706c、S706d以及S802。通信模块1002用于支持该随机接入装置100与接入网设备通信，例如，通信模块1002用于支持该随机接入装置100执行上述方法实施例中的S500、S501、S503、S600、S603、S700、S701、S702、S707、S800、S801、S803以及S804。该随机接入装置100还可以包括存储模块1003，可以用于存储该随机接入装置100的程序代码和数据。
当随机接入网设备100为上述图2和图3示出的终端设备，则上述处理模块1001可以是图3中的处理器31，通信模块1002可以是图3中的天线，存储模块1003可以是图3中的存储器34。
本申请实施例还提供一种终端设备110，该终端设备110处于连接态、且被配置有至少两个上行载波。该终端设备110包括上述随机接入装置100。
当终端设备110运行时，该终端设备110执行如图5～图9中任一实施例所示的实施例的随机接入方法。随机接入方法可参见上述如图5～图9中任一实施例的相关描述，此处不再赘述。
本申请另一实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当指令在终端设备110上运行时，该终端设备110执行如图5～图9中任一实施例所示的实施例的随机接入方法中终端设备的步骤。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；终端设备110的至少一个处理器可以从计算机可读存储介质读取该计算机执行指令，至少一个处理器执行该计算机执行指令使得终端设备110实施执行图5～图9中任一实施例所示的随机接入方法中的终端设备的步骤。
本申请实施例提供一种随机接入装置200，该随机接入装置200可以为接入网设备或所述接入网设备中的芯片。该随机接入装置200用于执行以上随机接入方法中的接入网设备所执行的步骤。本申请实施例提供的随机接入装置200可以包括相应步骤所对应的模块。
本申请实施例可以根据上述方法示例对随机接入装置200进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。本申请实施例中对模块的划分是示意性的，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。
在采用对应各个功能划分各个功能模块的情况下，图13示出了本实施例中随机接入装置200的一种可能的结构示意图。如图13所示，随机接入装置200包括处理单元210、发送单元211以及接收单元212。处理单元210用于支持该随机接入装置200确定第一信息，和/或用于本文所描述的技术的其它过程；发送单元211用于支持该随机接入装置200执行图5所示实施例中的S500和S501，图6所示实施例中的S600，图7所示实施例中的S700、S701和S702，图8所示实施例中的S800和S801，图9所示实施例中的S804，和/或用于本文所描述的技术的其它过程；接收单元212用于支持随机接入装置200接收终端设备发送的随机接入请求，和/或用于本文所描述的技术的其它过程。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。当然，本申请实施例提供的随机接入装置200包括但不限于上述模块，例如随机接入装置200还可以包括存储单元213。存储单元213可以用于存储该随机接入装置200的程序代码和数据。
在采用集成的单元的情况下，图14示出了上述实施例中所涉及的随机接入装置200的一种可能的结构示意图。
如图14所示，该随机接入装置200包括：处理模块220和通信模块221。处理模块220用于对该随机接入装置200的动作进行控制管理，例如，处理模块220用于支持该随机接入装置200执行上述方法实施例中的S103，和/或用于本文所描述的技术的其它过程。通信模块221用于支持该随机接入装置200与终端设备通信，例如，通信模块221用于支持该随机接入装置200执行上述方法实施例中的S100和S102。该随机接入装置200还可以包括存储模块222，可以用于存储该随机接入装置200的程序代码和数据。
其中，处理模块220可以是处理器或控制器，例如可以是中央处理器(Central Processing Unit，CPU)，数字信号处理器(Digital Signal Processor，DSP)。其可以实现或执行结合本发明实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。通信模块221可以是通信接口、收发电路或通信接口等。存储模块222可以是存储器。
本申请实施例还提供一种接入网设备300，该接入网设备300包括上述随机接入装置200。如图15所示，该接入网设备300包括：通信接口230、处理器231和存储器232。其中，通信接口230、处理器231与存储器232之间通过系统总线233连接，并完成相互间通信。
当接入网设备300运行时，该接入网设备300执行如图5～9任一附图所示的实施例的随机接入方法。具体的随机接入方法可参见上述如图5～9任一附图所示的实施例中的相关描述，此处不再赘述。
其中，通信接口230用于与其他设备或通信网络通信，如以太网，WLAN等。
其中，存储器232用于存储软件程序以及应用模块，处理器231通过运行存储在存储器232的软件程序以及应用模块，从而执行接入网设备300的各种功能应用以及数据处理。
存储器232可主要包括存储程序区2320，其中，存储程序区2320可存储操作系统、至少一个功能所需的应用程序，比如发送指示信息等。
其中，存储器232可以是只读存储器(Read-only Memory，ROM)，或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(Random Access Memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由终端设备存取的任何其他介质，但不限于此。
存储器232可以是独立存在，通过系统总线233与处理器231相连接。存储器232也可以和处理器231集成在一起。
处理器231是接入网设备300的控制中心。处理器231利用各种接口和线路连接整个接入网设备300的各个部分，通过运行或执行存储在存储器232内的软件程序和/或应用模块，以及调用存储在存储器232内的数据，执行接入网设备300的各种功能和处理数据，从而对接入网设备300进行整体监控。
在具体实现中，作为一种实施例，处理器231可以包括一个或多个CPU，例如图15中的处理器231包括CPU 0和CPU 1。
系统总线233可以分为地址总线、数据总线、控制总线等。本发明实施例中为了 清楚说明，在图15中将各种总线都示意为系统总线233。
本申请另一实施例还提供一种计算机可读存储介质，该计算机可读存储介质包括一个或多个程序代码，该一个或多个程序包括指令，当接入网设备300中的处理器在执行该程序代码时，该接入网设备300执行如图5～9任一附图所示的随机接入方法。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；接入网设备300的至少一个处理器可以从计算机可读存储介质读取该计算机执行指令，至少一个处理器执行该计算机执行指令使得接入网设备300实施执行图5～9任一附图所示的随机接入方法中的接入网设备的步骤。
本申请实施例中的第一信息用于确定终端设备被配置的至少两个上行载波中有随机接入资源的至少一个上行载波，这样，终端设备根据该第一信息即可确定出有随机接入资源的至少一个上行载波，进而从有随机接入资源的至少一个上行载波中确定出可发起随机接入的上行载波，以实现该终端设备完成随机接入。
在上述实施例中，可以全部或部分的通过软件，硬件，固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式出现。计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。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，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(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心传输。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成的服务器、数据中心等数据终端设备。该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(例如固态硬盘Solid State Disk(SSD))等。
通过以上的实施方式的描述，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，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，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，所述模块或单元的划分，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装置，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一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。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。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该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个设备(可以是单片机，芯片等)或处理器(processor)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，任何在本申请揭露的技术范围内的变化或替换，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 (28)

  1. 一种随机接入方法，其特征在于，应用于处于连接态、且被配置有至少两个上行载波的终端设备中的芯片或者所述终端设备，所述随机接入方法包括：
    接收接入网设备发送的第一信息，所述第一信息用于确定所述至少两个上行载波中有随机接入资源的至少一个上行载波；
    在所述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波；
    在所述发起随机接入的上行载波上发起随机接入。
  2. 根据权利要求1所述的随机接入方法，其特征在于，所述在所述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波，具体包括：
    接收所述接入网设备发送的第二信息，所述第二信息用于指示所述发起随机接入的上行载波；
    根据所述第二信息，确定所述发起随机接入的上行载波。
  3. 根据权利要求1所述的随机接入方法，其特征在于，所述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1；
    所述有随机接入资源的至少一个上行载波包括所述N个第二上行载波中的M个第二上行载波，所述发起随机接入的上行载波为所述M个第二上行载波中的一个，N≥M≥1，
    或者，
    所述有随机接入资源的至少一个上行载波包括所述第一上行载波，所述发起随机接入的上行载波为所述第一上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波，
    或者，
    所述发起随机接入的上行载波为：在调度请求失败触发随机接入过程的情况下，所述有随机接入资源的至少一个上行载波中发送所述调度请求使用的资源所在的上行载波。
  4. 根据权利要求1所述的随机接入方法，其特征在于，所述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1，所述随机接入方法还包括：获取所述接入网设备发送的下行参考信号的信号质量；
    其中，若所述下行参考信号的信号质量小于信号质量阈值，所述有随机接入资源的至少一个上行载波包括所述N个第二上行载波中的M个第二上行载波，所述发起随机接入的上行载波为所述M个第二上行载波中的一个，N≥M≥1，所述信号质量阈值为接收自所述接入网设备的。
  5. 根据权利要求1所述的随机接入方法，其特征在于，所述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1，所述随机接入方法还包括：获取所述接 入网设备发送的下行参考信号的信号质量；
    其中，若所述下行参考信号的信号质量大于或等于所述信号质量阈值；
    所述有随机接入资源的至少一个上行载波包括所述第一上行载波，所述发起随机接入的上行载波为所述第一上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波，
    或者，
    所述发起随机接入的上行载波为：在调度请求失败触发随机接入过程的情况下，所述有随机接入资源的至少一个上行载波中发送所述调度请求使用的资源所在的上行载波。
  6. 根据权利要求1-5中任意一项所述的随机接入方法，其特征在于，所述在所述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波之前，所述随机接入方法还包括：
    接收所述接入网设备发送的第三信息，所述第三信息用于触发随机接入过程。
  7. 根据权利要求6所述的随机接入方法，其特征在于，所述第三信息为物理下行控制信道命令，所述物理下行控制信道命令包括第四信息和第五信息中的至少一个，所述第四信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，所述第五信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波所配置的无线网络临时标识RNTI。
  8. 根据权利要求1-7中任意一项所述的随机接入方法，其特征在于，所述在所述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波之后，所述随机接入方法还包括：
    确定所述发起随机接入的上行载波中当前被激活的子带；
    若所述当前被激活的子带不是预设子带，则将所述当前被激活的子带切换为所述预设子带；
    所述在所述发起随机接入的上行载波上发起随机接入，具体包括：
    在所述发起随机接入的上行载波上通过所述预设子带中的随机接入资源发起随机接入。
  9. 根据权利要求1-8中任意一项所述的随机接入方法，其特征在于，所述随机接入方法还包括：
    配置第一计数器，所述第一计数器用于记录重新发起随机接入的次数；
    或者，
    为所述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第二计数器，所述第二计数器用于记录在对应上行载波上重新发起随机接入的次数。
  10. 根据权利要求1-9中任意一项所述的随机接入方法，其特征在于，所述随机接入方法还包括：
    配置第三计数器和第一预设功率爬坡步长，所述第三计数器用于记录在重新发起随机接入时发送功率的变化次数，所述发送功率的数值基于所述第一预设功率爬坡步长发生变化；
    或者，
    为所述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第四计数器和第二预设功率爬坡步长，所述第四计数器用于记录在对应上行载波上重新发起随机接入时发送功率的变化次数，所述发送功率的数值基于与重新发起随机接入采用的上行载波对应的第二预设功率爬坡步长发生变化。
  11. 一种随机接入方法，其特征在于，应用于接入网设备或所述接入网设备中的芯片，包括：
    向终端设备发送第一信息，所述终端设备处于连接态、且被配置有至少两个上行载波，所述第一信息用于确定所述至少两个上行载波中有随机接入资源的至少一个上行载波；
    接收所述终端设备在所述有随机接入资源的至少一个上行载波中的发起随机接入的上行载波上发送的随机接入请求。
  12. 根据权利要求11所述的随机接入方法，其特征在于，所述随机接入方法还包括：
    向所述终端设备发送第二信息，所述第二信息用于指示所述发起随机接入的上行载波。
  13. 根据权利要求11或12所述的随机接入方法，其特征在于，所述随机接入方法还包括：
    向所述终端设备发送第三信息，所述第三信息用于触发随机接入过程。
  14. 根据权利要求13所述的随机接入方法，其特征在于，所述第三信息为物理下行控制信道命令，所述物理下行控制信道命令包括第四信息和第五信息中的至少一个，所述第四信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，所述第五信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波所配置的无线网络临时标识RNTI。
  15. 一种随机接入装置，其特征在于，所述随机接入装置为应用于处于连接态、且被配置有至少两个上行载波的终端设备中的芯片或者所述终端设备，所述随机接入装置包括：
    通信单元，用于接收接入网设备发送的第一信息，所述第一信息用于确定所述至少两个上行载波中有随机接入资源的至少一个上行载波；
    确定单元，用于根据所述通信单元接收到的所述第一信息，确定所述有随机接入资源的至少一个上行载波，以及用于在所述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波；
    所述通信单元，还用于在所述确定单元确定出的所述发起随机接入的上行载波上 发起随机接入。
  16. 根据权利要求15所述的随机接入装置，其特征在于，
    所述通信单元，还用于接收所述接入网设备发送的第二信息，所述第二信息用于指示所述发起随机接入的上行载波；
    所述确定单元，具体用于根据所述接收单元接收到的所述第二信息，确定所述发起随机接入的上行载波。
  17. 根据权利要求15所述的随机接入装置，其特征在于，所述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1；
    所述有随机接入资源的至少一个上行载波包括所述N个第二上行载波中的M个第二上行载波，所述发起随机接入的上行载波为所述M个第二上行载波中的一个，N≥M≥1，
    或者，
    所述有随机接入资源的至少一个上行载波包括所述第一上行载波，所述发起随机接入的上行载波为所述第一上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配置有物理上行控制信道资源的上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波，
    或者，
    所述发起随机接入的上行载波为：在调度请求失败触发随机接入过程的情况下，所述有随机接入资源的至少一个上行载波中发送所述调度请求使用的资源所在的上行载波。
  18. 根据权利要求15所述的随机接入装置，其特征在于，所述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1，所述随机接入装置还包括获取单元；
    所述获取单元，用于获取所述接入网设备发送的下行参考信号的信号质量；
    其中，若所述下行参考信号的信号质量小于信号质量阈值，所述有随机接入资源的至少一个上行载波包括所述N个第二上行载波中的M个第二上行载波，所述发起随机接入的上行载波为所述M个第二上行载波中的一个，N≥M≥1，所述信号质量阈值为接收自所述接入网设备的。
  19. 根据权利要求15所述的随机接入装置，其特征在于，所述至少两个上行载波包括第一上行载波和N个第二上行载波，N≥1，所述随机接入装置还包括获取单元；
    所述获取单元，用于获取所述接入网设备发送的下行参考信号的信号质量；
    若所述下行参考信号的信号质量大于或等于所述信号质量阈值；
    所述有随机接入资源的至少一个上行载波包括所述第一上行载波，所述发起随机接入的上行载波为所述第一上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配 置有物理上行控制信道资源的上行载波，
    或者，
    所述发起随机接入的上行载波为所述有随机接入资源的至少一个上行载波中被配置的随机接入资源在时域上距离当前传输时间最短的上行载波，
    或者，
    所述发起随机接入的上行载波为在调度请求失败触发随机接入过程的情况下，所述有随机接入资源的至少一个上行载波中发送所述调度请求使用的资源所在的上行载波。
  20. 根据权利要求15-19中任意一项所述的随机接入装置，其特征在于，
    所述通信单元，还用于在所述确定单元在所述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波之前，接收所述接入网设备发送的第三信息，所述第三信息用于触发随机接入过程。
  21. 根据权利要求15所述的随机接入装置，其特征在于，所述第三信息为物理下行控制信道命令，所述物理下行控制信道命令包括第四信息和第五信息中的至少一个，所述第四信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，所述第五信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波所配置的无线网络临时标识RNTI。
  22. 根据权利要求15-21中任意一项所述的随机接入装置，其特征在于，
    所述确定单元，还用于所述在所述有随机接入资源的至少一个上行载波中确定发起随机接入的上行载波之后，确定所述发起随机接入的上行载波中当前被激活的子带；
    所述随机接入装置还包括切换单元；
    所述切换单元，用于若所述确定单元确定出的所述当前被激活的子带不是预设子带，则将所述当前被激活的子带切换为所述预设子带；
    所述通信单元，具体用于在所述发起随机接入的上行载波上通过所述切换单元切换成的所述预设子带中的随机接入资源发起随机接入。
  23. 根据权利要求15-22中任意一项所述的随机接入装置，其特征在于，所述随机接入装置还包括第一配置单元，所述第一配置单元用于：
    配置第一计数器，所述第一计数器用于记录重新发起随机接入的次数；
    或者，
    为所述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第二计数器，所述第二计数器用于记录在对应上行载波上重新发起随机接入的次数。
  24. 根据权利要求15-23中任意一项所述的随机接入装置，其特征在于，所述随机接入装置还包括第二配置单元，所述第二配置单元用于：
    配置第三计数器和第一预设功率爬坡步长，所述第三计数器用于记录在重新发起随机接入时发送功率的变化次数，所述发送功率的数值基于所述第一预设功率爬坡步长发生变化；
    或者，
    为所述有随机接入资源的至少一个上行载波中的每个上行载波分别配置第四计数 器和第二预设功率爬坡步长，所述第四计数器用于记录在对应上行载波上重新发起随机接入时发送功率的变化次数，所述发送功率的数值基于与重新发起随机接入采用的上行载波对应的第二预设功率爬坡步长发生变化。
  25. 一种随机接入装置，其特征在于，所述随机接入装置为接入网设备或所述接入网设备中的芯片，所述随机接入装置包括：
    处理单元，用于确定第一信息，所述第一信息用于指示终端设备确定至少两个上行载波中有随机接入资源的至少一个上行载波，所述终端设备处于连接态、且被配置有所述至少两个上行载波；
    发送单元，用于向所述终端设备发送所述处理单元确定出的所述第一信息；
    接收单元，用于接收所述终端设备在所述有随机接入资源的至少一个上行载波中的发起随机接入的上行载波上发送的随机接入请求。
  26. 根据权利要求25所述的随机接入装置，其特征在于，
    所述发送单元，还用于向所述终端设备发送第二信息，所述第二信息用于指示所述发起随机接入的上行载波。
  27. 根据权利要求25或26所述的随机接入装置，其特征在于，
    所述发送单元，还用于向所述终端设备发送第三信息，所述第三信息用于触发随机接入过程。
  28. 根据权利要求27所述的随机接入装置，其特征在于，所述第三信息为物理下行控制信道命令，所述物理下行控制信道命令包括第四信息和第五信息中的至少一个，所述第四信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波的调度信息所配置的搜索空间位置信息，所述第五信息包括所述接入网设备为所述有随机接入资源的至少一个上行载波中每个上行载波所配置的无线网络临时标识RNTI。
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