WO2022027238A1 - 无线通信的方法、终端设备和网络设备 - Google Patents

无线通信的方法、终端设备和网络设备 Download PDF

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Publication number
WO2022027238A1
WO2022027238A1 PCT/CN2020/106842 CN2020106842W WO2022027238A1 WO 2022027238 A1 WO2022027238 A1 WO 2022027238A1 CN 2020106842 W CN2020106842 W CN 2020106842W WO 2022027238 A1 WO2022027238 A1 WO 2022027238A1
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Prior art keywords
random access
information
terminal device
resource
network device
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PCT/CN2020/106842
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English (en)
French (fr)
Inventor
尤心
卢前溪
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Oppo广东移动通信有限公司
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Priority to CN202080101321.4A priority Critical patent/CN115669104A/zh
Priority to PCT/CN2020/106842 priority patent/WO2022027238A1/zh
Publication of WO2022027238A1 publication Critical patent/WO2022027238A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communications, and more particularly, to a wireless communication method, terminal device, and network device.
  • a sounding reference signal Sounding Reference Signal
  • the terminal device needs to send the SRS in the idle state or the deactivated state. How to realize the SRS transmission in the idle state or the deactivated state is an urgent problem to be solved.
  • the embodiments of the present application provide a wireless communication method, terminal device, and network device.
  • a terminal device in an idle state or a deactivated state can acquire and/or update a TA during a random access process, so as to perform uplink synchronization based on the TA, In order to realize the transmission of SRS.
  • a method for wireless communication comprising:
  • the terminal device receives the timing advance (Timing Advance, TA) during the random access process;
  • the terminal device sends the SRS according to the TA;
  • the terminal device is in an idle state, or the terminal device is in a deactivated state.
  • a method for wireless communication comprising:
  • the network device sends a TA to the terminal device during the random access process, where the TA is used for the terminal device to send the SRS, and the terminal device is in an idle state, or the terminal device is in a deactivated state.
  • a terminal device for executing the method in the above-mentioned first aspect.
  • the terminal device includes functional modules for executing the method in the first aspect.
  • a network device for executing the method in the second aspect.
  • the network device includes functional modules for executing the method in the second aspect above.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect.
  • an apparatus for implementing the method in any one of the above-mentioned first to second aspects.
  • the apparatus includes: a processor for invoking and running a computer program from a memory, so that a device on which the apparatus is installed executes the method in any one of the first to second aspects above.
  • a computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method in any one of the first to second aspects above.
  • a computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method in any one of the first to second aspects above.
  • a computer program which, when run on a computer, causes the computer to perform the method of any one of the above-mentioned first to second aspects.
  • a terminal device in an idle state or a deactivated state can acquire and/or update the TA in the random access process, and send the SRS according to the TA. That is, the terminal device can realize uplink synchronization based on the TA in the idle state or the deactivated state, thereby ensuring that the terminal device can send the SRS in the idle state or the deactivated state.
  • FIG. 1 is a schematic diagram of a communication system architecture to which an embodiment of the present application is applied.
  • FIG. 2 is a schematic diagram comparing a 4-step random access and a 2-step random access according to the present application.
  • FIG. 3 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a network device provided according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Fig. 7 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • CDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • Wireless Fidelity Wireless Fidelity
  • WiFi fifth-generation communication
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA standalone
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device can be a station (STATION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • a mobile phone Mobile Phone
  • a tablet computer Pad
  • a computer with a wireless transceiver function a virtual reality (Virtual Reality, VR) terminal device
  • augmented reality (Augmented Reality, AR) terminal Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network device may be a satellite or a balloon station.
  • the satellites may be low earth orbit (LEO) satellites, medium earth orbit (MEO) satellites, geostationary earth orbit (GEO) satellites, High Elliptical Orbit (HEO) satellites ) satellite etc.
  • the network device may also be a base station set in a location such as land or water.
  • a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device (
  • the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • Pico cell Femto cell (Femto cell), etc.
  • These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal).
  • the network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • a device having a communication function in the network/system may be referred to as a communication device.
  • the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., which are not limited in this embodiment of the present application.
  • the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship.
  • a indicates B it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • corresponding may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.
  • RRC Radio Resource Control
  • the random access process is divided into two forms, namely contention-based random access and non-contention-based random access.
  • the contention-based 4-step random access procedure (4-step RACH) is implemented through the following four steps.
  • Step1 Random access resource selection and random access preamble (Preamble) transmission (the first message (message 1, Msg1)).
  • Random access resource selection The network device sends random access related parameters to the terminal through the broadcast system information block (System Information Block, SIB) 1, wherein the random access common configuration information elements (Random Access Channel Common Configuration Information elements, RACH-ConfigCommon
  • SIB System Information Block
  • the RSRP threshold rsrp-ThresholdSSB for SSB in IE
  • SSB synchronization Signal Block
  • RSRP Reference Signal Received Power
  • Each SSB corresponds to a set of Preamble resources and random access opportunity (Random Access Channel Occasion, RO) resources.
  • the terminal device randomly selects the content-based random access resources from the selected SSBs, and uses the random access preamble.
  • the code index (PREAMBLE_INDEX) is set to the selected random access preamble.
  • the network device can estimate the uplink time (Timing) and the size of the grant (grant) resource required by the terminal device to transmit the third message (message 3, Msg3).
  • the Preamble is divided into Preamble group A and Preamble group B. If there is Preamble group B in the random access resources, the terminal The device selects the Preamble group according to the size of Msg3 and pathloss.
  • Step2 The network device transmits a random access response (Random Access Response, RAR) to the terminal device (the second message (message 2, Msg2)).
  • RAR Random Access Response
  • the terminal device After the terminal device sends Msg1, it opens the random access response time window (ra-ResponseWindow), and receives the reply of the network device to Msg1 during the operation of the ra-ResponseWindow, that is, the RAR message (Msg2).
  • the RAR message passes through the random access wireless network temporary identifier.
  • the Physical Downlink Control Channel (PDCCH) scrambled by the Random Access Radio Network Temporary Identity (RA-RNTI) is received.
  • the RA-RNTI is calculated according to the time-frequency position of the Physical Random Access Channel (PRACH) that sends the Preamble. Therefore, if multiple terminal devices send the Preamble on the same RO, the corresponding RARs are multiplexed in the same RO.
  • PRACH Physical Random Access Channel
  • RAR media access control
  • PDU Protocol Data Unit
  • TAC Timing Advance Command
  • UL Grant uplink grant
  • TC-RNTI Temporary Cell Radio Network Temporary Identity
  • the terminal device needs to retransmit Msg1. The steps are as described in Step 1. When the number of transmissions exceeds the preambleTransMax configured by the network, the terminal device reports the random access problem to the upper layer.
  • Step3 The terminal device transmits an RRC message (the third message (message 3, Msg3)) to the network device by using the scheduling resource.
  • RRC message the third message (message 3, Msg3)
  • the message of Msg3 is mainly used to inform the network device what event triggers the RACH process. For example, if it is an initial access random process, the terminal equipment identification (UE ID) and establishment cause (establishment cause) will be carried in Msg3; if it is RRC reestablishment, the connected state UE ID and establishment cause will be carried.
  • UE ID terminal equipment identification
  • establishment cause acknowledgement cause
  • the unique identifier of the UE needs to be included in Msg3 for conflict resolution in Step 4.
  • C-RNTI Cell Radio Network Temporary Identity
  • S-TMSI Serving-Temporary Mobile Subscriber Identity
  • Step4 Competitive conflict resolution (the fourth message (message 4, Msg4)).
  • Msg4 has two functions, one is for contention conflict resolution; the second is to transmit RRC configuration message to terminal equipment.
  • the terminal device starts a random access contention resolution timer (ra-ContentionResolutionTimer) after sending Msg3, and during the running period of the ra-ContentionResolutionTimer, the terminal device monitors the PDCCH scrambled by C-RNTI or TC-RNTI.
  • ra-ContentionResolutionTimer random access contention resolution timer
  • receiving the PDCCH scrambled by C-RNTI means that the contention conflict is successfully resolved; for the terminal device in the non-RRC_CONNECTED state, receiving the PDCCH scrambled by TC-RNTI, when the successfully decoded Msg4 corresponds to the
  • the identification (ID) contained in the MAC PDU matches the common control channel (CCCH) service data unit (SDU) sent by Msg3, that is, the contention conflict is considered to be successfully resolved. Otherwise (Timer timeout or contention conflict resolution fails), if the number of Preamble transmissions does not exceed the maximum number of transmissions preambleTransMax configured by the network, the terminal needs to retransmit Msg1.
  • the steps are as described in Step 1. If the number of Preamble transmissions exceeds the network configured number of transmissions The maximum number of transmissions is preambleTransMax, and the terminal reports the random access problem to the upper layer.
  • FIG. 2 is a comparison diagram of 2-step RACH and 4-step RACH.
  • the first message (message A, MsgA) in the two-step random access includes the preamble transmitted on PRACH and the preamble transmitted on the Physical Uplink Shared Channel (PUSCH) Load information (Msg3), after MsgA is transmitted, the terminal device monitors the network side's response in the configured window, and if it receives an indication of successful contention resolution sent by the network device, the terminal device ends the random access process; If a fallback indication is received in the second message (message B, MsgB) in the step random access, the terminal device performs the transmission of Msg3 and monitors the contention resolution result; if the contention resolution fails after the transmission of Msg3, the terminal device continues to try MsgA transmission.
  • Msg3 Physical Uplink Shared Channel
  • the network device can configure the maximum number of 2-step RACH attempts 'N' for the terminal device.
  • the terminal device can switch to 4-step The RACH procedure continues with access attempts.
  • GNSS Global Navigation Satellite System
  • radio technologies such as LTE networks, which provide multiple options to locate users, wireless networks, ground beacon systems, etc.
  • IMUs Inertial Measurement Units
  • sensors e.g. tracking user location based on accelerometers, gyroscopes, magnetic force instrument or use the barometric pressure sensor for vertical positioning.
  • the 3rd Generation Partnership Project (3GPP) NR's enhanced positioning capabilities bring additional gains.
  • the operation of low and high frequency bands (i.e. FR1 and FR2) and the use of a large number of antenna arrays provide additional degrees of freedom, greatly improving positioning accuracy.
  • Positioning based on Time Difference of Arrival (Observed Time Difference of Arrival, OTDOA), Uplink Time Difference of Arrival (UTDOA), Cell-ID or Enhanced Cell-ID (E-Cell-ID) technology that utilizes a large bandwidth (low and high frequency bands) for time measurement brings better performance for user positioning.
  • massive antenna systems such as massive multiple-input multiple-output (massive MIMO) systems, more accurate user locations are achieved by combining temporal measurements with the spatial and angular domains of the propagation channel.
  • Sounding Reference Signal is one of the main reference signals used for positioning. Based on the SRS sent by the terminal device, the network device can measure the time of arrival, signal strength, and inclination of arrival to determine the location information of the terminal device. In addition, the Sounding Reference Signal (SRS) is also one of the main reference signals for uplink measurement, and the terminal device can perform uplink beam management based on the SRS signal, so as to determine the analog beam used for uplink transmission.
  • SRS Sounding Reference Signal
  • the activation and deactivation of the SRS can be realized based on the Media Access Control Control Element (MAC CE) signaling, which is used to activate/deactivate the SRS for positioning and its corresponding signaling. the spatial relationship.
  • MAC CE Media Access Control Control Element
  • the configuration and transmission of the SRS are performed by the terminal device in the connected state, because the terminal device is synchronized with the network side in the connected state. Then, when the terminal device enters an idle (IDLE) state or an inactive (inactive) state, because it is not synchronized with the network, it cannot receive the network side configuration and send the SRS. In addition, the terminal device can enter the connected state through random access to obtain the TA, but if the terminal device enters the connected state just to obtain the TA for sending the SRS, additional signaling overhead and additional power consumption will be caused.
  • a terminal device in an idle state or a deactivated state can acquire and/or update a TA in a random access process, and send an SRS according to the TA. That is, the terminal device can realize uplink synchronization based on the TA in the idle state or the deactivated state, thereby ensuring that the terminal device can send the SRS in the idle state or the deactivated state.
  • FIG. 3 is a schematic flowchart of a method 200 for wireless communication according to an embodiment of the present application. As shown in FIG. 3 , the method 200 may include at least part of the following contents:
  • the network device sends a TA to the terminal device during the random access process, where the terminal device is in an idle state, or the terminal device is in a deactivated state;
  • the terminal device receives the TA in the random access process
  • the terminal device sends the SRS according to the TA.
  • a terminal device in an idle state or a deactivated state can receive a TA in the random access process, and realize uplink synchronization based on the received TA, thereby ensuring that the terminal device can be in an idle state or a deactivated state when sending SRS.
  • a terminal device in an idle state or a deactivated state can update the TA through the random access procedure, thereby ensuring the accuracy of the TA. That is to say, before initiating the random access process, the terminal device has acquired a TA, assuming that the TA acquired before the random access process is TA0, in this case, TA0 has become invalid, that is, the terminal device cannot realize uplink synchronization based on TA0 .
  • the terminal device may also be in other states than the connected state, and is not limited to the idle state and the deactivated state.
  • the deactivated state may also be referred to as an inactive state, which is not limited in this application.
  • the terminal device may send the SRS in the idle state or the deactivated state, that is, the terminal device does not need to send the SRS after entering the connected state, thereby realizing energy saving of the terminal.
  • the SRS includes at least one of the following:
  • SRS for uplink measurement SRS for positioning.
  • the TA represents the timing advance between the terminal device and the network device.
  • the TA represents the timing advance between the reference point in the cell where the terminal equipment resides and the base station.
  • the TA represents the timing advance between the reference point in the cell where the terminal equipment resides and the network equipment.
  • the TA represents the timing advance between the reference point in the cell where the terminal equipment resides and the access network equipment.
  • the reference point is located at the edge of the camping cell, or the reference point is located at the center of the camping cell, or the reference point is the location of the terminal equipment in the camping cell, or the The reference point is a pre-configured or agreed upon location in the camping cell.
  • the camping cell can also be understood as the cell where the terminal device is currently located, or the camping cell can also be understood as the cell before the terminal device enters the idle state/inactive state service area.
  • the terminal device may specifically receive the TA in the random access process through the solutions of the following example 1 and example 2.
  • Example 1 the terminal device sends first random access information to the network device, where the first random access information includes request information, and the request information is used to request to update the TA, and/or, the request information is used to request back Idle state or deactivated state; the terminal device receives second random access information sent by the network device, where the second random access information includes the TA.
  • the terminal device may explicitly instruct the network device through the request information that the purpose of initiating random access is to acquire TA.
  • Example 1 when the terminal device in the idle state or the deactivated state needs to update the TA, or when the terminal device in the idle state or the deactivated state needs to obtain the TA, the terminal device sends a message to the network device. the first random access information.
  • Example 1 after the network device receives the request information included in the first random access information, it may be determined that the terminal device initiates the random access procedure for acquiring the TA. In this case, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device.
  • UL grant uplink grant
  • the second random access information does not include at least one of the following information:
  • Uplink resource authorization uplink resource configuration, downlink data, configuration information.
  • the second random access information may also include some other information, such as random access preamble, C-RNTI, TC-RNTI.
  • the second random access information includes indication information, where the indication information is used to instruct the terminal device to return to an idle state or a deactivated state.
  • Example 1 after receiving the second random access information, the terminal device ignores entering the connected state.
  • Example 1 the network device does not expect the terminal device to enter the connected state.
  • the first random access information is the first piece of information (Msg1) in the four-step random access
  • the second random access information is the second piece of information in the four-step random access ( Msg2). That is, when the terminal device in the idle or deactivated state needs to update the TA, or when the terminal device in the idle or deactivated state needs to obtain the TA, the terminal device sends Msg1 to the network device, the Msg1 includes request information, the The request information is used to request to update the TA, and/or, the request information is used to request to return to the idle state or the deactivated state.
  • the network device After the network device receives the Msg1, it can determine, according to the request information, that the terminal device initiates the random access procedure to obtain the TA, and sends the Msg2 to the terminal device. In this case, the Msg2 includes the TA. In the Msg2, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device. After receiving the Msg2, the terminal device may send an SRS based on the TA carried in the Msg2, and the terminal device ignores entering the connected state.
  • UL grant uplink grant
  • the first random access information is the first piece of information (Msg1) in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access (Msg4). That is, when the terminal device in the idle or deactivated state needs to update the TA, or when the terminal device in the idle or deactivated state needs to obtain the TA, the terminal device sends Msg1 to the network device, the Msg1 includes request information, the The request information is used to request to update the TA, and/or, the request information is used to request to return to the idle state or the deactivated state.
  • the network device After the network device receives the Msg1, it can determine, according to the request information, that the terminal device initiates the random access procedure to obtain the TA, and sends Msg4 to the terminal device. In this case, the Msg4 includes the TA. In the Msg4, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device. After the terminal device receives the Msg4, it can send the SRS based on the TA carried in the Msg4, and the terminal device ignores entering the connected state.
  • UL grant uplink grant
  • the first random access information is the third piece of information (Msg3) in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access (Msg4). That is, when the terminal device in the idle or deactivated state needs to update the TA, or when the terminal device in the idle or deactivated state needs to obtain the TA, the terminal device sends Msg3 to the network device, the Msg3 includes request information, the The request information is used to request to update the TA, and/or, the request information is used to request to return to the idle state or the deactivated state.
  • the network device After the network device receives the Msg3, it can determine, according to the request information, that the terminal device initiates the random access procedure to acquire the TA, and sends the Msg4 to the terminal device. In this case, the Msg4 includes the TA. In the Msg4, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device. After the terminal device receives the Msg4, it can send the SRS based on the TA carried in the Msg4, and the terminal device ignores entering the connected state.
  • UL grant uplink grant
  • the first random access information is the first piece of information (MsgA) in the two-step random access
  • the second random access information is the second piece of information in the two-step random access (MsgB). That is, when the terminal device in the idle state or the deactivated state needs to update the TA, or when the terminal device in the idle state or the deactivated state needs to obtain the TA, the terminal device sends the MsgA to the network device, and the MsgA includes the request information.
  • the request information is used to request to update the TA, and/or, the request information is used to request to return to the idle state or the deactivated state.
  • the network device After the network device receives the MsgA, it can determine, according to the request information, that the terminal device initiates the random access procedure to obtain the TA, and sends the MsgB to the terminal device. In this case, the MsgB includes the TA. In the MsgB, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device. After receiving the MsgB, the terminal device may send an SRS based on the TA carried in the MsgB, and the terminal device ignores entering the connected state.
  • UL grant uplink grant
  • the terminal device sends the first random access information according to the first random access resource, and the first random access resource is used for the terminal device to initiate a random access procedure for updating the TA in an idle state or a deactivated state ; the terminal device receives second random access information, where the second random access information includes the TA.
  • the terminal device may implicitly instruct the network device through the first random access resource, and the purpose of initiating random access is to acquire TA.
  • the first random access resource is a specific random access resource
  • the network device can determine The random access procedure initiated by the terminal device is to acquire the TA.
  • the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device.
  • UL grant uplink grant
  • the second random access information does not include at least one of the following information:
  • Uplink resource authorization uplink resource configuration, downlink data, configuration information.
  • the second random access information may also include some other information, such as random access preamble, C-RNTI, TC-RNTI.
  • the second random access information includes indication information, where the indication information is used to instruct the terminal device to return to an idle state or a deactivated state.
  • Example 2 after receiving the second random access information, the terminal device ignores entering the connected state.
  • Example 2 the network device does not expect the terminal device to enter the connected state.
  • the first random access resource is a contention free random access (Contention Free Random Access, CFRA) resource.
  • CFRA contention Free Random Access
  • the first random access resource is a CFRA resource
  • the first random access resource is valid during the running period of the first timer.
  • the first timer times out or stops, the first random access resource is invalid.
  • the terminal device cannot send the first random access information according to the first random access resource.
  • the first random access resource is a CFRA resource
  • the first random access resource is a specific time-sensitive resource
  • the network device can reconfigure the first random access resource.
  • the conditions for starting or restarting the first timer include at least one of the following:
  • the terminal device enters an idle state or a deactivated state
  • the terminal device receives configuration information for the first timer
  • the terminal device receives indication information for updating the configuration of the first timer.
  • the terminal device receives first configuration information sent by the network device, where the first configuration information is used to configure the first random access resource and/or the first timer.
  • the first configuration information may configure the start or restart condition of the first timer, the duration of the first timer, and the like.
  • the terminal device when the terminal device is in a connected state, the terminal device receives the first configuration information.
  • the network device when the terminal device is in a connected state, the network device sends the first configuration information to the terminal device.
  • the first configuration information is carried in RRC release information.
  • the terminal device enters an idle state or a deactivated state after receiving the RRC release information.
  • the first random access resource is a CFRA resource
  • the first random access resource is a resource dedicated to the terminal device.
  • the first random access resource when the first random access resource is a CFRA resource, the first random access resource includes at least one of the following:
  • Random access preamble time-frequency resources.
  • the time-frequency resources included in the first random access resource may specifically be the time-frequency resources for sending Msg1 or MsgA, and may specifically include PRACH resources or PUSCH resources.
  • the first random access resource is a contention based random access (Contention Based Random Access, CBRA) resource.
  • CBRA Contention Based Random Access
  • the first random access resource is a CBRA resource
  • the first random access resource is the target random access preamble, or the first random access resource is the target random access time-frequency resource.
  • the first random access resource is pre-configured or agreed in a protocol, or the first random access resource is configured by the network device.
  • the first random access information is the first piece of information (Msg1) in the four-step random access
  • the second random access information is the second piece of information (Msg1) in the four-step random access. Msg2). That is, when the terminal device in the idle state or the deactivated state needs to update the TA, or when the terminal device in the idle state or the deactivated state needs to obtain the TA, the terminal device sends the Msg1 to the network device according to the first random access resource. . After receiving the Msg1, the network device may determine, according to the first random access resource, that the terminal device initiates the random access procedure for acquiring the TA, and send Msg2 to the terminal device.
  • the Msg2 includes TA, in addition, in this Msg2, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device .
  • the terminal device may send an SRS based on the TA carried in the Msg2, and the terminal device ignores entering the connected state.
  • the first random access information is the first piece of information (Msg1) in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access (Msg4). That is, when the terminal device in the idle state or the deactivated state needs to update the TA, or when the terminal device in the idle state or the deactivated state needs to obtain the TA, the terminal device sends the Msg1 to the network device according to the first random access resource. . After the network device receives the Msg1, it can determine, according to the first random access resource, that the terminal device initiates the random access procedure for acquiring the TA, and sends Msg4 to the terminal device.
  • the Msg4 includes TA, in addition, in this Msg4, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device . After the terminal device receives the Msg4, it can send the SRS based on the TA carried in the Msg4, and the terminal device ignores entering the connected state.
  • uplink grant UL grant
  • the first random access information is the third piece of information (Msg3) in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access (Msg4). That is, when the terminal device in the idle state or the deactivated state needs to update the TA, or when the terminal device in the idle state or the deactivated state needs to obtain the TA, the terminal device sends the Msg3 to the network device according to the first random access resource. . After receiving the Msg3, the network device may determine, according to the first random access resource, that the terminal device initiates the random access procedure for acquiring the TA, and send Msg4 to the terminal device.
  • the Msg4 includes TA, in addition, in this Msg4, the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device . After the terminal device receives the Msg4, it can send the SRS based on the TA carried in the Msg4, and the terminal device ignores entering the connected state.
  • uplink grant UL grant
  • the first random access information is the first piece of information (MsgA) in the two-step random access
  • the second random access information is the second piece of information in the two-step random access (MsgB). That is, when the terminal device in the idle state or the deactivated state needs to update the TA, or when the terminal device in the idle state or the deactivated state needs to obtain the TA, the terminal device sends the MsgA to the network device according to the first random access resource. . After receiving the MsgA, the network device may determine, according to the first random access resource, that the terminal device initiates the random access procedure for acquiring the TA, and send the MsgB to the terminal device.
  • the MsgB includes TA
  • the network device will not allocate uplink grant (UL grant) resources to the terminal device, nor will it send configuration information to the terminal device, nor will it send downlink data and downlink resource configuration information to the terminal device .
  • the terminal device may send an SRS based on the TA carried in the MsgB, and the terminal device ignores entering the connected state.
  • the terminal device updates the TA in the random access process through the solution of the above example 1 or example 2.
  • the TA effective area includes at least one of the following:
  • a specific area among cell coverage, RAN coverage, Tracking Area, and SRS effective area is a specific area among cell coverage, RAN coverage, Tracking Area, and SRS effective area.
  • the terminal device determines whether to leave the coverage of the cell according to the physical cell identifier (Physical Cell Identifier, PCI) in the system message.
  • PCI Physical Cell Identifier
  • the terminal device may determine whether to leave the coverage of the cell according to whether the PCI in the system message changes.
  • the terminal device can acquire and/or update the TA in the idle state or the deactivated state, and send the SRS according to the TA. That is, the terminal device can realize uplink synchronization based on the TA in the idle state or the deactivated state, thereby ensuring that the terminal device can send the SRS in the idle state or the deactivated state.
  • FIG. 4 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 includes:
  • a communication unit 310 configured to receive a timing advance TA in a random access process
  • the communication unit 310 is further configured to send a sounding reference signal SRS according to the TA;
  • the terminal device is in an idle state, or the terminal device is in a deactivated state.
  • the communication unit 310 is specifically used for:
  • first random access information includes request information
  • request information is used to request to update the TA, and/or the request information is used to request to return to an idle state or a deactivated state
  • Second random access information is received, where the second random access information includes the TA.
  • the communication unit 310 is specifically used for:
  • the first random access resource is used for the terminal device to initiate a random access procedure for updating the TA in an idle state or a deactivated state;
  • Second random access information is received, where the second random access information includes the TA.
  • the first random access resource is valid during the running period of the first timer.
  • the conditions for starting or restarting the first timer include at least one of the following:
  • the terminal device enters an idle state or a deactivated state
  • the terminal device receives configuration information for the first timer
  • the terminal device receives indication information for updating the configuration of the first timer.
  • the communication unit 310 is further configured to receive first configuration information, where the first configuration information is used to configure the first random access resource and/or the first timer.
  • the communication unit 310 is specifically used for:
  • the terminal device When the terminal device is in a connected state, the first configuration information is received.
  • the first configuration information is carried in RRC release information.
  • the first random access resource is a resource dedicated to the terminal device.
  • the first random access resource includes at least one of the following:
  • Random access preamble time-frequency resources.
  • the first random access resource is a contention-free random access CFRA resource.
  • the first random access resource is a target random access preamble, or the first random access resource is a target random access time-frequency resource.
  • the first random access resource is pre-configured or agreed in a protocol, or the first random access resource is configured by a network device.
  • the first random access resource is a competing random access CBRA resource.
  • the second random access information includes indication information, where the indication information is used to instruct the terminal device to return to an idle state or a deactivated state.
  • the second random access information does not include at least one of the following information:
  • Uplink resource authorization uplink resource configuration, downlink data, configuration information.
  • the terminal device 300 further includes: a processing unit 320,
  • the processing unit 320 After receiving the second random access information, the processing unit 320 is configured to ignore entering the connected state.
  • the first random access information is the first piece of information in the four-step random access
  • the second random access information is the second piece of information in the four-step random access
  • the first random access information is the first piece of information in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access
  • the first random access information is the third piece of information in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access
  • the first random access information is the first piece of information in the two-step random access
  • the second random access information is the second piece of information in the two-step random access.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 300 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are respectively for realizing the method shown in FIG. 3 .
  • the corresponding process of the terminal device in 200 is not repeated here for brevity.
  • FIG. 5 shows a schematic block diagram of a network device 400 according to an embodiment of the present application.
  • the network device 400 includes:
  • the communication unit 410 is configured to send a timing advance TA to the terminal equipment during the random access process, where the TA is used for the terminal equipment to send the sounding reference signal SRS, the terminal equipment is in an idle state, or the terminal equipment is in an off state. active state.
  • the communication unit 410 is specifically used for:
  • the terminal device Receive the first random access information sent by the terminal device, where the first random access information includes request information, and the request information is used to request to update the TA, and/or the request information is used to request to return to the idle state or deactivate state;
  • the communication unit 410 is specifically used for:
  • the first random access resource is valid during the running period of the first timer.
  • the conditions for starting or restarting the first timer include at least one of the following:
  • the terminal device enters an idle state or a deactivated state
  • the terminal device receives configuration information for the first timer
  • the terminal device receives indication information for updating the configuration of the first timer.
  • the communication unit 410 is further configured to send first configuration information to the terminal device, where the first configuration information is used to configure the first random access resource and/or the first timer.
  • the communication unit 410 is specifically used for:
  • the terminal device When the terminal device is in a connected state, the first configuration information is sent to the terminal device.
  • the first configuration information is carried in RRC release information.
  • the first random access resource is a resource dedicated to the terminal device.
  • the first random access resource includes at least one of the following:
  • Random access preamble time-frequency resources.
  • the first random access resource is a contention-free random access CFRA resource.
  • the first random access resource is a target random access preamble, or the first random access resource is a target random access time-frequency resource.
  • the first random access resource is pre-configured or agreed in a protocol, or the first random access resource is configured by the network device.
  • the first random access resource is a competing random access CBRA resource.
  • the second random access information includes indication information, where the indication information is used to instruct the terminal device to return to an idle state or a deactivated state.
  • the second random access information does not include at least one of the following information:
  • Uplink resource authorization uplink resource configuration, downlink data, configuration information.
  • the network device 400 further includes: a processing unit 420,
  • the processing unit 420 is used for not expecting the terminal device to enter the connection state.
  • the first random access information is the first piece of information in the four-step random access
  • the second random access information is the second piece of information in the four-step random access
  • the first random access information is the first piece of information in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access
  • the first random access information is the third piece of information in the four-step random access
  • the second random access information is the fourth piece of information in the four-step random access
  • the first random access information is the first piece of information in the two-step random access
  • the second random access information is the second piece of information in the two-step random access.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • the network device 400 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 400 are respectively for realizing the method shown in FIG. 3 .
  • the corresponding process of the network device in 200 is not repeated here for brevity.
  • FIG. 6 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application.
  • the communication device 500 shown in FIG. 6 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 500 may further include a memory 520 .
  • the processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.
  • the memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .
  • the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by the device.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include antennas, and the number of the antennas may be one or more.
  • the communication device 500 may specifically be a network device in this embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For brevity, details are not repeated here. .
  • the communication device 500 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and will not be repeated here.
  • FIG. 7 is a schematic structural diagram of an apparatus according to an embodiment of the present application.
  • the apparatus 600 shown in FIG. 7 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the apparatus 600 may further include a memory 620 .
  • the processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .
  • the apparatus 600 may further include an input interface 630 .
  • the processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.
  • the apparatus 600 may further include an output interface 640 .
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the apparatus can be applied to the network equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application, which are not repeated here for brevity.
  • the apparatus can be applied to the mobile terminal/terminal equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the mobile terminal/terminal equipment in each method of the embodiments of the present application.
  • the apparatus can implement the corresponding processes implemented by the mobile terminal/terminal equipment in each method of the embodiments of the present application.
  • the apparatus can implement the corresponding processes implemented by the mobile terminal/terminal equipment in each method of the embodiments of the present application.
  • the device mentioned in the embodiment of the present application may also be a chip.
  • it can be a system-on-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.
  • FIG. 8 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 8 , the communication system 700 includes a terminal device 710 and a network device 720 .
  • the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be Random Access Memory (RAM), which acts as an external cache.
  • RAM Static RAM
  • DRAM Dynamic RAM
  • SDRAM Synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application.
  • the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and are not repeated here for brevity.
  • Embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.
  • the embodiments of the present application also provide a computer program.
  • the computer program can be applied to the network device in the embodiments of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.
  • the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application.
  • the corresponding process for the sake of brevity, will not be repeated here.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请实施例提供了一种无线通信的方法、终端设备和网络设备，处于空闲态或者去激活态的终端设备能够在随机接入过程中获取和/或更新TA，从而基于TA进行上行同步，以实现SRS的发送。该无线通信的方法包括：终端设备在随机接入过程中接收TA；该终端设备根据该TA发送SRS；其中，该终端设备处于空闲态，或者，该终端设备处于去激活态。

Description

无线通信的方法、终端设备和网络设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种无线通信的方法、终端设备和网络设备。
背景技术
在新空口(New Radio，NR)系统中，探测参考信号(Sounding Reference Signal，SRS)的配置以及发送都是终端设备在连接态时进行的。然而，在一些场景下，终端设备需要在空闲态或者去激活态发送SRS，如何实现空闲态或者去激活态时的SRS发送，是一个亟待解决的问题。
发明内容
本申请实施例提供了一种无线通信的方法、终端设备和网络设备，处于空闲态或者去激活态的终端设备能够在随机接入过程中获取和/或更新TA，从而基于TA进行上行同步，以实现SRS的发送。
第一方面，提供了一种无线通信的方法，该方法包括：
终端设备在随机接入过程中接收定时提前量(Timing Advance，TA)；
该终端设备根据该TA发送SRS；
其中，该终端设备处于空闲态，或者，该终端设备处于去激活态。
第二方面，提供了一种无线通信的方法，该方法包括：
网络设备在随机接入过程中向终端设备发送TA，其中，该TA用于该终端设备发送SRS，该终端设备处于空闲态，或者，该终端设备处于去激活态。
第三方面，提供了一种终端设备，用于执行上述第一方面中的方法。
具体地，该终端设备包括用于执行上述第一方面中的方法的功能模块。
第四方面，提供了一种网络设备，用于执行上述第二方面中的方法。
具体地，该网络设备包括用于执行上述第二方面中的方法的功能模块。
第五方面，提供了一种终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面中的方法。
第六方面，提供了一种网络设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第二方面中的方法。
第七方面，提供了一种装置，用于实现上述第一方面至第二方面中的任一方面中的方法。
具体地，该装置包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第一方面至第二方面中的任一方面中的方法。
第八方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面中的方法。
第九方面，提供了一种计算机程序产品，包括计算机程序指令，所述计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面中的方法。
第十方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面至第二方面中的任一方面中的方法。
通过上述技术方案，处于空闲态或者去激活态的终端设备能够在随机接入过程中获取和/或更新TA，以及根据TA发送SRS。也即，终端设备在空闲态或者去激活态下能够基于TA实现上行同步，从而，保障终端设备可以在空闲态或者去激活态时发送SRS。
附图说明
图1是本申请实施例应用的一种通信系统架构的示意性图。
图2是根据本申请提供的一种4步随机接入与2步随机接入的对比示意性图。
图3是根据本申请实施例提供的一种无线通信的方法的示意性流程图。
图4是根据本申请实施例提供的一种终端设备的示意性框图。
图5是根据本申请实施例提供的一种网络设备的示意性框图。
图6是根据本申请实施例提供的一种通信设备的示意性框图。
图7是根据本申请实施例提供的一种装置的示意性框图。
图8是根据本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实 施例是本申请一部分实施例，而不是全部的实施例。针对本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新空口(New Radio，NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、非地面通信网络(Non-Terrestrial Networks，NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、第五代通信(5th-Generation，5G)系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车辆间(Vehicle to Vehicle，V2V)通信，或车联网(Vehicle to everything，V2X)通信等，本申请实施例也可以应用于这些通信系统。
可选地，本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
可选地，本申请实施例中的通信系统可以应用于非授权频谱，其中，非授权频谱也可以认为是共享频谱；或者，本申请实施例中的通信系统也可以应用于授权频谱，其中，授权频谱也可以认为是非共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例，其中，终端设备也可以称为用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是WLAN中的站点(STATION，ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、下一代通信系统例如NR网络中的终端设备，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
在本申请实施例中，终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中，终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中，网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及NR网络中的网络设备或者基站(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定，在本申请实施例中，网络设备可以具有移动特性，例如网络设备可以为移动的设备。可选地，网络设备可以为卫星、气球站。例如，卫星可以为低地球轨道(low earth orbit，LEO) 卫星、中地球轨道(medium earth orbit，MEO)卫星、地球同步轨道(geostationary earth orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等。可选地，网络设备还可以为设置在陆地、水域等位置的基站。
在本申请实施例中，网络设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110，网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。
图1示例性地示出了一个网络设备和两个终端设备，可选地，该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
可选地，该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作限定。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例，通信设备可包括具有通信功能的网络设备110和终端设备120，网络设备110和终端设备120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统100中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
在NR版本(Release)15中，随机接入过程由如下几种事件触发：
-无线资源控制(Radio Resource Control，RRC)连接重建过程；
-RRC空闲(RRC_IDLE)态发起的初始接入；
-RRC连接(RRC_CONNECTED)态下，当下行或上行数据到达时上行处于“不同步”状态；
-RRC_CONNECTED态下，当上行数据到达时，没有可用的物理上行控制信道(Physical Uplink Control Channel，PUCCH)资源用于调度请求(Scheduling Request，SR)传输；
-SR失败；
-由RRC发起的同步重配置请求(例如，切换)；
-由RRC去激活(RRC_INACTIVE)态转移到RRC_CONNECTED态；
-建立辅小区(Secondary Cell，SCell)上的时间对齐；
-请求其他系统信息；
-波束故障恢复。
在NR中，随机接入过程分为两种形式，分别为基于竞争的随机接入和基于非竞争的随机接入。
基于竞争的4步随机接入过程(4-step RACH)通过如下四个步骤(step)实现。
Step1：随机接入资源选择及随机接入前导码(Preamble)传输(第一条信息(message 1，Msg1))。
随机接入资源选择：网络设备通过广播系统信息块(System Information Block，SIB)1向终端发送随机接入相关参数，其中随机接入公共配置信息元素(Random Access Channel Common Configuration Information elements，RACH-ConfigCommon IE)中的针对SSB的RSRP阈值(rsrp-ThresholdSSB)用于终端设备的同步信号块(Synchronization Signal Block，SSB)选择，终端将每个SSB下的参考信号接收功率(Reference Signal Received Power，RSRP)测量结果与 rsrp-ThresholdSSB进行对比，选择测量值高于所配置阈值的SSB进行接入，若没有满足配置阈值的SSB，则从全部SSB中随机选择一个进行接入。每个SSB对应一组Preamble资源和随机接入时机(Random Access Channel Occasion，RO)资源，终端设备从选定的SSB中用于基于竞争的随机接入资源中进行随机选择，将随机接入前导码索引(PREAMBLE_INDEX)设置为选定的随机接入Preamble。网络设备基于接收到的Preamble可以估计上行时间(Timing)以及终端设备传输第三条信息(message 3，Msg3)需要的授权(grant)资源大小。为了让网络设备可以更准确的了解到待传输的Msg3的大小以分配合适的上行资源，将Preamble分为Preamble组(group)A和Preamble group B，若随机接入资源中存在Preamble group B，终端设备根据Msg3的大小以及路损(pathloss)对Preamble group进行选择。
Step2：网络设备向终端设备传输随机接入响应(Random Access Response，RAR)(第二条信息(message 2，Msg2))。
终端设备发送Msg1后，开启随机接入响应时间窗(ra-ResponseWindow)，在ra-ResponseWindow运行期间接收网络设备对Msg1的回复，即RAR消息(Msg2)，RAR消息通过随机接入无线网络临时标识符(Random Access Radio Network Temporary Identity，RA-RNTI)加扰的物理下行控制信道(Physical Downlink Control Channel，PDCCH)接收。RA-RNTI根据发送Preamble的物理随机接入信道(Physical Random Access Channel，PRACH)的时频位置计算得到，因此如果多个终端设备在同一个RO上发送Preamble，则对应的RAR复用在同一个RAR媒体接入控制(Media Access Control，MAC)协议数据单元(Protocol Data Unit，PDU)中。若终端设备成功接收到与发送Preamble的RO资源对应的RA-RNTI加扰的PDCCH，并且RAR中包含一个MAC子(sub)PDU所携带的随机接入前导序列标识(Random Access Preamble ID，RAPID)与Step1中选择的PREAMBLE_INDEX相对应，则RAR接收成功，终端设备可解码得到定时提前命令(Timing Advance Command，TAC)，上行授权(UL Grant)和临时小区无线网络临时标识符(Temporary Cell Radio Network Temporary Identity，TC-RNTI)，进行Step3。
若在ra-ResponseWindow运行期间没有接收到与发送Preamble的RO资源对应的RA-RNTI加扰的PDCCH，或接收到了RA-RNTI加扰的PDCCH，但RAR中不包含与PREAMBLE_INDEX对应的MAC subPDU，上述两种情况出现时则认为RAR接收失败，此时，若Preamble的传输次数没有超过网络配置的最大Preamble传输次数(preambleTransMax)，终端设备需要对Msg1进行重传，步骤如Step1所述，若Preamble的传输次数超过了网络配置的preambleTransMax，终端设备向上层上报随机接入问题。
Step3：终端设备利用调度资源向网络设备传输RRC消息(第三条信息(message 3，Msg3))。
Msg3的消息主要用于通知网络设备该RACH过程是由什么事件触发。比如，如果是初始接入随机过程，则在Msg3中会携带终端设备标识(UE ID)和建立原因(establishment cause)；如果是RRC重建，则会携带连接态UE ID和establishment cause。Msg3中需要包含UE的唯一标识，用于Step4中的冲突解决，对于处于RRC_CONNECTED状态的终端设备来说，其唯一标识时为小区无线网络临时标识符(Cell Radio Network Temporary Identity，C-RNTI),对于非RRC_CONNECTED状态的终端设备来说，将使用一个来自核心网的唯一终端标志(服务临时移动用户标识(Serving-Temporary Mobile Subscriber Identity，S-TMSI)或一个随机数)。
Step4：竞争冲突解决(第四条信息(message 4，Msg4))。
Msg4有两个作用，一个是用于竞争冲突解决；第二是向终端设备传输RRC配置消息。终端设备在发送Msg3后开启随机接入竞争解决定时器(ra-ContentionResolutionTimer)，在ra-ContentionResolutionTimer运行期间，终端设备监听C-RNTI或TC-RNTI加扰的PDCCH。对于处于RRC_CONNECTED态的终端设备，接收到C-RNTI加扰的PDCCH即认为竞争冲突解决成功；对于处于非RRC_CONNECTED态的终端设备，接收到TC-RNTI加扰的PDCCH，当成功解码的Msg4对应的MAC PDU中包含的标识(ID)与Msg3发送的公共控制信道(common control channel，CCCH)服务数据单元(service data unit，SDU)匹配，即认为竞争冲突解决成功。否则(Timer超时或竞冲突解决失败)，若Preamble的传输次数没有超过网络配置的最大传输次数preambleTransMax，终端需要对Msg1进行重传，步骤如Step1所述，若Preamble的传输次数超过了网络配置的最大传输次数preambleTransMax，终端向上层上报随机接入问题。
需要说明的是，两步随机接入(2-step RACH)过程是NR Release 16引入的，旨在降低四步随机接入(4-step RACH)过程中的时延和信令开销。如图2为2-step RACH与4-step RACH对比图。在2-step RACH过程中，两步随机接入中的第一条信息(message A，MsgA)包含有在PRACH上传输的preamble和在物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上传输的负载信息 (Msg3)，在MsgA传输后，终端设备在配置的窗口内监听网络侧的响应，如果收到网络设备下发的竞争解决成功的指示，则终端设备结束随机接入过程；如果在两步随机接入中的第二条信息(message B，MsgB)中收到回退指示，则终端设备执行Msg3的传输并监听竞争解决结果；若Msg3传输后竞争解决失败，则终端设备继续尝试MsgA的传输。此外，网络设备可以为终端设备配置2-step RACH的最大尝试次数‘N’，当终端设备尝试了‘N’次2-step RACH后仍未接入成功，则终端设备可以切换到4-step RACH过程继续进行接入尝试。
应理解，位置是目前生活中不可或缺的应用之一，同时对定位的延迟和准确性要求也越来越严格。在许多定位应用中，精确定位通常是通过多种技术的组合来实现的，比如1)基于全球导航卫星系统(Global Navigation Satellite System，GNSS)提供户外场景中的位置信息；2)无线电技术(例如LTE网络，提供多种选项来定位用户，无线网络，地面信标系统，等等)；3)惯性测量单元(Inertial Measurement Units，IMU)或传感器(例如基于加速计追踪用户位置、陀螺仪、磁力仪或利用大气压力传感器进行垂直定位)。这些技术都有望在未来实现准确的用户定位方面发挥重要作用。
第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)NR的增强定位能力带来额外的增益。低频段和高频段(即FR1和FR2)的操作和大量天线阵列的使用提供了额外的自由度，大大提高了定位精度。基于到达时间差定位法(Observed Time Difference of Arrival，OTDOA)和上行到到时间差(Uplink Time Difference of Arrival，UTDOA)、小区标识(Cell-ID)或增强的小区标识(E-Cell-ID)等定位技术，利用大带宽(低频段以及高频段)进行时间测量为用户定位带来了更好的性能。利用大规模天线系统，如大规模(massive)多输入多输出(Multiple-Input Multiple-Output，massive MIMO)系统，通过结合时间测量以及传播信道的空间和角度域来实现更准确的用户位置。
探测参考信号(SRS)是定位使用的主要参考信号之一，基于终端设备发送的SRS，网络设备可以测量到达时间、信号强度、到达倾角等，从而确定终端设备的位置信息。此外，探测参考信号(SRS)也是上行测量的主要参考信号之一，终端设备可以基于SRS信号进行上行波束管理，从而确定上行传输所用的模拟波束。
SRS的激活与去激活可以基于媒体接入控制控制元素(Media Access Control Control Element，MAC CE)信令实现，该MAC CE信令用于激活/去激活用于定位(positioning)的SRS以及其对应的空间关系(spatial relation)。
需要说明的是，现阶段SRS的配置及发送都是终端设备在连接态时进行的，因为终端设备在连接态的时候与网络侧是同步的。那么当终端设备进入空闲(IDLE)态或者去激活(inactive)态的时候，由于未与网络同步，无法接收网络侧配置并发送SRS。此外，终端设备可以通过随机接入的方式进入连接态获得TA，但是如果终端设备只是为了获得用于发送SRS的TA而进入连接态，就会造成额外的信令开销以及额外功耗。
基于上述问题，本申请提出了一种发送SRS的方案，处于空闲态或者去激活态的终端设备能够在随机接入过程中获取和/或更新TA，以及根据TA发送SRS。也即，终端设备在空闲态或者去激活态下能够基于TA实现上行同步，从而，保障终端设备可以在空闲态或者去激活态时发送SRS。
以下通过具体实施例详述本申请的技术方案。
图3是根据本申请实施例的无线通信的方法200的示意性流程图，如图3所示，该方法200可以包括如下内容中的至少部分内容：
S210，网络设备在随机接入过程中向终端设备发送TA，其中该终端设备处于空闲态，或者，该终端设备处于去激活态；
S220，该终端设备在随机接入过程中接收该TA；
S230，该终端设备根据该TA发送SRS。
在本申请实施例中，处于空闲态或者去激活态的终端设备能够在随机接入过程中接收TA，以及基于接收到的TA实现上行同步，从而，保障终端设备可以在空闲态或者去激活态时发送SRS。
此外，处于空闲态或者去激活态的终端设备能够通过随机接入过程更新TA，从而确保TA的准确性。也就是说，在发起随机接入过程之前，终端设备已经获取了一个TA，假设随机接入过程之前获取的TA为TA0，此种情况下，TA0已经失效，即终端设备无法基于TA0实现上行同步。
需要说明的是，在本申请实施例中，终端设备还可以处于除连接态之外的其他状态，并不限定于空闲态和去激活态。此外，在申请实施例中，去激活态还可以称之为非激活态，本申请对此并不限定。
需要说明的是，在本申请实施例中，终端设备可以在空闲态或者去激活态时发送SRS，即终端设备无需进入连接态之后发送SRS，从而实现终端节能。
可选地，在本申请实施例中，该SRS包括以下中的至少一种：
用于上行测量的SRS，用于定位的SRS。
可选地，在本申请实施例中，该TA表示终端设备与网络设备之间的定时提前量。或者，该TA表示终端设备驻留小区中的参考点与基站之间的定时提前量。或者，该TA表示终端设备驻留小区中的参考点与网络设备之间的定时提前量。又或者，该TA表示终端设备驻留小区中的参考点与接入网设备之间的定时提前量。
可选地，该参考点位于该驻留小区的边缘，或者，该参考点位于该驻留小区的中心，或者，该参考点为该驻留小区中该终端设备所处的位置，或者，该参考点为该驻留小区中预配置或者协议约定的一个位置。
需要说明的是，在一些情况下，该驻留小区也可以理解为是该终端设备当前所处的小区，或者，该驻留小区也可以理解为是该终端设备进入空闲态/非激活态之前的服务小区。
可选地，在本申请实施例中，该终端设备具体可以通过如下示例1和示例2的方案在随机接入过程中接收该TA。
示例1，该终端设备向该网络设备发送第一随机接入信息，该第一随机接入信息包括请求信息，该请求信息用于请求更新TA，和/或，该请求信息用于请求回到空闲态或者去激活态；该终端设备接收该网络设备发送的第二随机接入信息，该第二随机接入信息包括该TA。
也就是说，在示例1中，该终端设备可以通过该请求信息显式指示网络设备，发起随机接入的目的是为了获取TA。
需要说明的是，在示例1中，当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备向该网络设备发送该第一随机接入信息。
在示例1中，当该网络设备接收到该第一随机接入信息中包括的该请求信息之后，可以确定终端设备是为了获取TA才发起的随机接入流程。此种情况下，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。
也即，在示例1中，该第二随机接入信息不包括以下信息中的至少一种：
上行资源授权，上行资源配置，下行数据，配置信息。
此外，该第二随机接入信息还可以包括一些其他的信息，如随机接入前导码、C-RNTI、TC-RNTI。
可选地，在示例1中，该第二随机接入信息包括指示信息，该指示信息用于指示该终端设备回到空闲态或者去激活态。
可选地，在示例1中，在接收到该第二随机接入信息之后，该终端设备忽略进入连接态。
可选地，在示例1中，该网络设备不期待该终端设备进入连接态。
在示例1中，例如，该第一随机接入信息为四步随机接入中的第一条信息(Msg1)，该第二随机接入信息为四步随机接入中的第二条信息(Msg2)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备向该网络设备发送Msg1，该Msg1包括请求信息，该请求信息用于请求更新TA，和/或，该请求信息用于请求回到空闲态或者去激活态。该网络设备接收到该Msg1之后，可以根据该请求信息确定终端设备是为了获取TA才发起的随机接入流程，并向该终端设备发送Msg2，此种情况下，该Msg2包括TA，此外，在该Msg2中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该Msg2之后，可以基于该Msg2中携带的TA发送SRS，且该终端设备忽略进入连接态。
在示例1中，又例如，该第一随机接入信息为四步随机接入中的第一条信息(Msg1)，该第二随机接入信息为四步随机接入中的第四条信息(Msg4)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备向该网络设备发送Msg1，该Msg1包括请求信息，该请求信息用于请求更新TA，和/或，该请求信息用于请求回到空闲态或者去激活态。该网络设备接收到该Msg1之后，可以根据该请求信息确定终端设备是为了获取TA才发起的随机接入流程，并向该终端设备发送Msg4，此种情况下，该Msg4包括TA，此外，在该Msg4中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该Msg4之后，可以基于该Msg4中携带的TA发送SRS，且该终端设备忽略进入连接态。
在示例1中，又例如，该第一随机接入信息为四步随机接入中的第三条信息(Msg3)，该第二随机接入信息为四步随机接入中的第四条信息(Msg4)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备向该网络设备发送Msg3，该Msg3包括请求信息，该请求信息用于请求更新TA，和/或，该请求信息用于请求回到空闲态或者去激活态。该网络设备接收到该Msg3之后，可以根据该请求信息确定终端设备是为了获 取TA才发起的随机接入流程，并向该终端设备发送Msg4，此种情况下，该Msg4包括TA，此外，在该Msg4中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该Msg4之后，可以基于该Msg4中携带的TA发送SRS，且该终端设备忽略进入连接态。
在示例1中，再例如，该第一随机接入信息为两步随机接入中的第一条信息(MsgA)，该第二随机接入信息为两步随机接入中的第二条信息(MsgB)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备向该网络设备发送MsgA，该MsgA包括请求信息，该请求信息用于请求更新TA，和/或，该请求信息用于请求回到空闲态或者去激活态。该网络设备接收到该MsgA之后，可以根据该请求信息确定终端设备是为了获取TA才发起的随机接入流程，并向该终端设备发送MsgB，此种情况下，该MsgB包括TA，此外，在该MsgB中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该MsgB之后，可以基于该MsgB中携带的TA发送SRS，且该终端设备忽略进入连接态。
示例2，该终端设备根据第一随机接入资源发送第一随机接入信息，该第一随机接入资源用于该终端设备在空闲态或者去激活态发起用于更新TA的随机接入过程；该终端设备接收第二随机接入信息，该第二随机接入信息包括该TA。
也就是说，在示例2中，该终端设备可以通过该第一随机接入资源隐式指示网络设备，发起随机接入的目的是为了获取TA。
需要说明的是，在示例2中，该第一随机接入资源为特定的随机接入资源，当该网络设备确定该终端设备根据该第一随机接入资源发起随机接入流程之后，可以确定该终端设备是为了获取TA才发起的随机接入流程。此种情况下，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。
也即，在示例2中，该第二随机接入信息不包括以下信息中的至少一种：
上行资源授权，上行资源配置，下行数据，配置信息。
此外，该第二随机接入信息还可以包括一些其他的信息，如随机接入前导码、C-RNTI、TC-RNTI。
可选地，在示例2中，该第二随机接入信息包括指示信息，该指示信息用于指示该终端设备回到空闲态或者去激活态。
可选地，在示例2中，在接收到该第二随机接入信息之后，该终端设备忽略进入连接态。
可选地，在示例2中，该网络设备不期待该终端设备进入连接态。
可选地，在示例2的一种实现方式中，该第一随机接入资源为免竞争的随机接入(Contention Free Random Access，CFRA)资源。
可选地，在该第一随机接入资源为CFRA资源的情况下，该第一随机接入资源在第一定时器运行期间有效。而在该第一定时器超时或者停止的情况下，该第一随机接入资源失效。在该第一随机接入资源失效的情况下，终端设备无法根据该第一随机接入资源发送该第一随机接入信息。
也就是说，在该第一随机接入资源为CFRA资源的情况下，该第一随机接入资源为具体一定时效性的资源，失效之后，网络设备可以重新配置该第一随机接入资源。
可选地，该第一定时器的启动或者重启条件包括以下中的至少一种：
该终端设备进入空闲态或者去激活态；
该终端设备接收到针对该第一定时器的配置信息；
该终端设备接收到针对该第一随机接入资源的配置信息；
该终端设备接收到用于更新该第一定时器的配置的指示信息。
可选地，在示例2中，该终端设备接收该网络设备发送的第一配置信息，该第一配置信息用于配置该第一随机接入资源和/或该第一定时器。
例如，该第一配置信息可以配置该第一定时器的启动或者重启条件，该第一定时器的时长等。
例如，在该终端设备处于连接态的情况下，该终端设备接收该第一配置信息。相应的，在该终端设备处于连接态的情况下，该网络设备向该终端设备发送该第一配置信息。
可选地，该第一配置信息承载在RRC释放信息中。该终端设备接收到该RRC释放信息之后进入空闲态或者去激活态。
可选地，在该第一随机接入资源为CFRA资源的情况下，该第一随机接入资源为该终端设备专属的资源。
可选地，在该第一随机接入资源为CFRA资源的情况下，该第一随机接入资源包括以下中的至少一种：
随机接入前导码，时频资源。
例如，该第一随机接入资源所包括的时频资源具体可以是发送Msg1或者MsgA的时频资源，具体可以包括PRACH资源，或，PUSCH资源。
可选地，在示例2的另一种实现方式中，该第一随机接入资源为竞争的随机接入过程(Contention Based Random Access，CBRA)资源。
可选地，在该第一随机接入资源为CBRA资源的情况下，该第一随机接入资源为目标随机接入前导码，或者，该第一随机接入资源为目标随机接入时频资源。该第一随机接入资源为预配置或者协议约定的，或者，该第一随机接入资源为该网络设备配置的。
在示例2中，例如，该第一随机接入信息为四步随机接入中的第一条信息(Msg1)，该第二随机接入信息为四步随机接入中的第二条信息(Msg2)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备根据该第一随机接入资源向该网络设备发送Msg1。该网络设备接收到该Msg1之后，可以根据该第一随机接入资源确定该终端设备是为了获取TA才发起的随机接入流程，并向该终端设备发送Msg2，此种情况下，该Msg2包括TA，此外，在该Msg2中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该Msg2之后，可以基于该Msg2中携带的TA发送SRS，且该终端设备忽略进入连接态。
在示例2中，又例如，该第一随机接入信息为四步随机接入中的第一条信息(Msg1)，该第二随机接入信息为四步随机接入中的第四条信息(Msg4)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备根据该第一随机接入资源向该网络设备发送Msg1。该网络设备接收到该Msg1之后，可以根据该第一随机接入资源确定该终端设备是为了获取TA才发起的随机接入流程，并向该终端设备发送Msg4，此种情况下，该Msg4包括TA，此外，在该Msg4中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该Msg4之后，可以基于该Msg4中携带的TA发送SRS，且该终端设备忽略进入连接态。
在示例2中，又例如，该第一随机接入信息为四步随机接入中的第三条信息(Msg3)，该第二随机接入信息为四步随机接入中的第四条信息(Msg4)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备根据该第一随机接入资源向该网络设备发送Msg3。该网络设备接收到该Msg3之后，可以根据该第一随机接入资源确定该终端设备是为了获取TA才发起的随机接入流程，并向该终端设备发送Msg4，此种情况下，该Msg4包括TA，此外，在该Msg4中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该Msg4之后，可以基于该Msg4中携带的TA发送SRS，且该终端设备忽略进入连接态。
在示例2中，再例如，该第一随机接入信息为两步随机接入中的第一条信息(MsgA)，该第二随机接入信息为两步随机接入中的第二条信息(MsgB)。即当处于空闲态或者去激活态的终端设备需要更新TA，或者，当处于空闲态或者去激活态的终端设备需要获取TA，该终端设备根据该第一随机接入资源向该网络设备发送MsgA。该网络设备接收到该MsgA之后，可以根据该第一随机接入资源确定该终端设备是为了获取TA才发起的随机接入流程，并向该终端设备发送MsgB，此种情况下，该MsgB包括TA，此外，在该MsgB中，该网络设备不会为终端设备分配上行授权(UL grant)资源，也不会向终端设备发送配置信息，也不会向终端设备发送下行数据和下行资源配置信息。该终端设备接收到该MsgB之后，可以基于该MsgB中携带的TA发送SRS，且该终端设备忽略进入连接态。
可选地，在一些实施例中，在该终端设备离开TA有效区域之后，该终端设备通过上述示例1或者示例2的方案，在随机接入过程中更新该TA。
可选地，该TA有效区域包括以下中的至少一种：
小区覆盖范围、RAN覆盖范围、跟踪区(Tracking Area)、SRS有效区域中的一个特定区域。
可选地，在该TA有效区域为小区覆盖范围的情况下，该终端设备根据系统消息中的物理小区标识(Physical Cell Identifier，PCI)确定是否离开该小区的覆盖范围。
例如，在该TA有效区域为小区覆盖范围的情况下，该终端设备可以根据系统消息中的PCI是否改变，确定是否离开该小区的覆盖范围。
因此，在本申请实施例中，终端设备能够在空闲态或者去激活态下获取和/或更新TA，以及根据TA发送SRS。也即，终端设备在空闲态或者去激活态下能够基于TA实现上行同步，从而，保障终端设备可以在空闲态或者去激活态时发送SRS。
上文结合图3，详细描述了本申请的方法实施例，下文结合图4至图8，详细描述本申请的装置 实施例，应理解，装置实施例与方法实施例相互对应，类似的描述可以参照方法实施例。
图4示出了根据本申请实施例的终端设备300的示意性框图。如图4所示，该终端设备300包括：
通信单元310，用于在随机接入过程中接收定时提前量TA；
该通信单元310还用于根据该TA发送探测参考信号SRS；
其中，该终端设备处于空闲态，或者，该终端设备处于去激活态。
可选地，该通信单元310具体用于：
发送第一随机接入信息，该第一随机接入信息包括请求信息，该请求信息用于请求更新TA，和/或，该请求信息用于请求回到空闲态或者去激活态；
接收第二随机接入信息，该第二随机接入信息包括该TA。
可选地，该通信单元310具体用于：
根据第一随机接入资源发送第一随机接入信息，该第一随机接入资源用于该终端设备在空闲态或者去激活态发起用于更新TA的随机接入过程；
接收第二随机接入信息，该第二随机接入信息包括该TA。
可选地，该第一随机接入资源在第一定时器运行期间有效。
可选地，该第一定时器的启动或者重启条件包括以下中的至少一种：
该终端设备进入空闲态或者去激活态；
该终端设备接收到针对该第一定时器的配置信息；
该终端设备接收到针对该第一随机接入资源的配置信息；
该终端设备接收到用于更新该第一定时器的配置的指示信息。
可选地，该通信单元310还用于接收第一配置信息，该第一配置信息用于配置该第一随机接入资源和/或该第一定时器。
可选地，该通信单元310具体用于：
在该终端设备处于连接态的情况下，接收该第一配置信息。
可选地，该第一配置信息承载在RRC释放信息中。
可选地，该第一随机接入资源为该终端设备专属的资源。
可选地，该第一随机接入资源包括以下中的至少一种：
随机接入前导码，时频资源。
可选地，该第一随机接入资源为免竞争的随机接入CFRA资源。
可选地，该第一随机接入资源为目标随机接入前导码，或者，该第一随机接入资源为目标随机接入时频资源。
可选地，该第一随机接入资源为预配置或者协议约定的，或者，该第一随机接入资源为网络设备配置的。
可选地，该第一随机接入资源为竞争的随机接入CBRA资源。
可选地，该第二随机接入信息包括指示信息，该指示信息用于指示该终端设备回到空闲态或者去激活态。
可选地，该第二随机接入信息不包括以下信息中的至少一种：
上行资源授权，上行资源配置，下行数据，配置信息。
可选地，该终端设备300还包括：处理单元320，
在接收到该第二随机接入信息之后，该处理单元320用于忽略进入连接态。
可选地，该第一随机接入信息为四步随机接入中的第一条信息，该第二随机接入信息为四步随机接入中的第二条信息；或者，
该第一随机接入信息为四步随机接入中的第一条信息，该第二随机接入信息为四步随机接入中的第四条信息；或者，
该第一随机接入信息为四步随机接入中的第三条信息，该第二随机接入信息为四步随机接入中的第四条信息；或者，
该第一随机接入信息为两步随机接入中的第一条信息，该第二随机接入信息为两步随机接入中的第二条信息。
可选地，在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解，根据本申请实施例的终端设备300可对应于本申请方法实施例中的终端设备，并且终端设备300中的各个单元的上述和其它操作和/或功能分别为了实现图3所示方法200中终端设备的相应流程，为了简洁，在此不再赘述。
图5示出了根据本申请实施例的网络设备400的示意性框图。如图5所示，该网络设备400包括：
通信单元410，用于在随机接入过程中向终端设备发送定时提前量TA，其中，该TA用于该终端设备发送探测参考信号SRS，该终端设备处于空闲态，或者，该终端设备处于去激活态。
可选地，该通信单元410具体用于：
接收该终端设备发送的第一随机接入信息，该第一随机接入信息包括请求信息，该请求信息用于请求更新TA，和/或，该请求信息用于请求回到空闲态或者去激活态；
向该终端设备发送第二随机接入信息，该第二随机接入信息包括该TA。
可选地，该通信单元410具体用于：
接收该终端设备根据第一随机接入资源发送的第一随机接入信息，该第一随机接入资源用于该终端设备在空闲态或者去激活态发起用于更新TA的随机接入过程；
向该终端设备发送第二随机接入信息，该第二随机接入信息包括该TA。
可选地，该第一随机接入资源在第一定时器运行期间有效。
可选地，该第一定时器的启动或者重启条件包括以下中的至少一种：
该终端设备进入空闲态或者去激活态；
该终端设备接收到针对该第一定时器的配置信息；
该终端设备接收到针对该第一随机接入资源的配置信息；
该终端设备接收到用于更新该第一定时器的配置的指示信息。
可选地，该通信单元410还用于向该终端设备发送第一配置信息，该第一配置信息用于配置该第一随机接入资源和/或该第一定时器。
可选地，该通信单元410具体用于：
在该终端设备处于连接态的情况下，向该终端设备发送该第一配置信息。
可选地，该第一配置信息承载在RRC释放信息中。
可选地，该第一随机接入资源为该终端设备专属的资源。
可选地，该第一随机接入资源包括以下中的至少一种：
随机接入前导码，时频资源。
可选地，该第一随机接入资源为免竞争的随机接入CFRA资源。
可选地，该第一随机接入资源为目标随机接入前导码，或者，该第一随机接入资源为目标随机接入时频资源。
可选地，该第一随机接入资源为预配置或者协议约定的，或者，该第一随机接入资源为该网络设备配置的。
可选地，该第一随机接入资源为竞争的随机接入CBRA资源。
可选地，该第二随机接入信息包括指示信息，该指示信息用于指示该终端设备回到空闲态或者去激活态。
可选地，该第二随机接入信息不包括以下信息中的至少一种：
上行资源授权，上行资源配置，下行数据，配置信息。
可选地，该网络设备400还包括：处理单元420，
该处理单元420用于不期待该终端设备进入连接态。
可选地，该第一随机接入信息为四步随机接入中的第一条信息，该第二随机接入信息为四步随机接入中的第二条信息；或者，
该第一随机接入信息为四步随机接入中的第一条信息，该第二随机接入信息为四步随机接入中的第四条信息；或者，
该第一随机接入信息为四步随机接入中的第三条信息，该第二随机接入信息为四步随机接入中的第四条信息；或者，
该第一随机接入信息为两步随机接入中的第一条信息，该第二随机接入信息为两步随机接入中的第二条信息。
可选地，在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解，根据本申请实施例的网络设备400可对应于本申请方法实施例中的网络设备，并且网络设备400中的各个单元的上述和其它操作和/或功能分别为了实现图3所示方法200中网络设备的相应流程，为了简洁，在此不再赘述。
图6是本申请实施例提供的一种通信设备500示意性结构图。图6所示的通信设备500包括处理器510，处理器510可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图6所示，通信设备500还可以包括存储器520。其中，处理器510可以从存储器520中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器520可以是独立于处理器510的一个单独的器件，也可以集成在处理器510中。
可选地，如图6所示，通信设备500还可以包括收发器530，处理器510可以控制该收发器530与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器530可以包括发射机和接收机。收发器530还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备500具体可为本申请实施例的网络设备，并且该通信设备500可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备500具体可为本申请实施例的移动终端/终端设备，并且该通信设备500可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
图7是本申请实施例的装置的示意性结构图。图7所示的装置600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，装置600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，该装置600还可以包括输入接口630。其中，处理器610可以控制该输入接口630与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该装置600还可以包括输出接口640。其中，处理器610可以控制该输出接口640与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该装置可应用于本申请实施例中的网络设备，并且该装置可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该装置可应用于本申请实施例中的移动终端/终端设备，并且该装置可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
可选地，本申请实施例提到的装置也可以是芯片。例如可以是系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图8是本申请实施例提供的一种通信系统700的示意性框图。如图8所示，该通信系统700包括终端设备710和网络设备720。
其中，该终端设备710可以用于实现上述方法中由终端设备实现的相应的功能，以及该网络设备720可以用于实现上述方法中由网络设备实现的相应的功能为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态 随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的移动终端/终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。针对这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (82)

  1. 一种无线通信的方法，其特征在于，包括：
    终端设备在随机接入过程中接收定时提前量TA；
    所述终端设备根据所述TA发送探测参考信号SRS；
    其中，所述终端设备处于空闲态，或者，所述终端设备处于去激活态。
  2. 如权利要求1所述的方法，其特征在于，所述终端设备在随机接入过程中接收TA，包括：
    所述终端设备发送第一随机接入信息，所述第一随机接入信息包括请求信息，所述请求信息用于请求更新TA，和/或，所述请求信息用于请求回到空闲态或者去激活态；
    所述终端设备接收第二随机接入信息，所述第二随机接入信息包括所述TA。
  3. 如权利要求1所述的方法，其特征在于，所述终端设备在随机接入过程中TA，包括：
    所述终端设备根据第一随机接入资源发送第一随机接入信息，所述第一随机接入资源用于所述终端设备在空闲态或者去激活态发起用于更新TA的随机接入过程；
    所述终端设备接收第二随机接入信息，所述第二随机接入信息包括所述TA。
  4. 如权利要求3所述的方法，其特征在于，所述第一随机接入资源在第一定时器运行期间有效。
  5. 如权利要求4所述的方法，其特征在于，所述第一定时器的启动或者重启条件包括以下中的至少一种：
    所述终端设备进入空闲态或者去激活态；
    所述终端设备接收到针对所述第一定时器的配置信息；
    所述终端设备接收到针对所述第一随机接入资源的配置信息；
    所述终端设备接收到用于更新所述第一定时器的配置的指示信息。
  6. 如权利要求4或5所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第一配置信息，所述第一配置信息用于配置所述第一随机接入资源和/或所述第一定时器。
  7. 如权利要求6所述的方法，其特征在于，所述终端设备接收第一配置信息，包括：
    在所述终端设备处于连接态的情况下，所述终端设备接收所述第一配置信息。
  8. 如权利要求6所述的方法，其特征在于，所述第一配置信息承载在无线资源控制RRC释放信息中。
  9. 如权利要求4至8中任一项所述的方法，其特征在于，所述第一随机接入资源为所述终端设备专属的资源。
  10. 如权利要求4至9中任一项所述的方法，其特征在于，所述第一随机接入资源包括以下中的至少一种：
    随机接入前导码，时频资源。
  11. 如权利要求4至10中任一项所述的方法，其特征在于，所述第一随机接入资源为免竞争的随机接入CFRA资源。
  12. 如权利要求3所述的方法，其特征在于，所述第一随机接入资源为目标随机接入前导码，或者，所述第一随机接入资源为目标随机接入时频资源。
  13. 如权利要求12所述的方法，其特征在于，所述第一随机接入资源为预配置或者协议约定的，或者，所述第一随机接入资源为网络设备配置的。
  14. 如权利要求12或13所述的方法，其特征在于，所述第一随机接入资源为竞争的随机接入CBRA资源。
  15. 如权利要求2至14中任一项所述的方法，其特征在于，所述第二随机接入信息包括指示信息，所述指示信息用于指示所述终端设备回到空闲态或者去激活态。
  16. 如权利要求2至15中任一项所述的方法，其特征在于，所述第二随机接入信息不包括以下信息中的至少一种：
    上行资源授权，上行资源配置，下行数据，配置信息。
  17. 如权利要求2至16中任一项所述的方法，其特征在于，所述方法还包括：
    在接收到所述第二随机接入信息之后，所述终端设备忽略进入连接态。
  18. 如权利要求2至17中任一项所述的方法，其特征在于，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第二条信息；或者，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为四步随机接入中的第三条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为两步随机接入中的第一条信息，所述第二随机接入信息为两步随机接入中的第二条信息。
  19. 一种无线通信的方法，其特征在于，包括：
    网络设备在随机接入过程中向终端设备发送定时提前量TA，其中，所述TA用于所述终端设备发送探测参考信号SRS，所述终端设备处于空闲态，或者，所述终端设备处于去激活态。
  20. 如权利要求19所述的方法，其特征在于，所述网络设备在随机接入过程中向终端设备发送TA，包括：
    所述网络设备接收所述终端设备发送的第一随机接入信息，所述第一随机接入信息包括请求信息，所述请求信息用于请求更新TA，和/或，所述请求信息用于请求回到空闲态或者去激活态；
    所述网络设备向所述终端设备发送第二随机接入信息，所述第二随机接入信息包括所述TA。
  21. 如权利要求19所述的方法，其特征在于，所述网络设备在随机接入过程中向终端设备发送TA，包括：
    所述网络设备接收所述终端设备根据第一随机接入资源发送的第一随机接入信息，所述第一随机接入资源用于所述终端设备在空闲态或者去激活态发起用于更新TA的随机接入过程；
    所述网络设备向所述终端设备发送第二随机接入信息，所述第二随机接入信息包括所述TA。
  22. 如权利要求21所述的方法，其特征在于，所述第一随机接入资源在第一定时器运行期间有效。
  23. 如权利要求22所述的方法，其特征在于，所述第一定时器的启动或者重启条件包括以下中的至少一种：
    所述终端设备进入空闲态或者去激活态；
    所述终端设备接收到针对所述第一定时器的配置信息；
    所述终端设备接收到针对所述第一随机接入资源的配置信息；
    所述终端设备接收到用于更新所述第一定时器的配置的指示信息。
  24. 如权利要求22或23所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送第一配置信息，所述第一配置信息用于配置所述第一随机接入资源和/或所述第一定时器。
  25. 如权利要求24所述的方法，其特征在于，所述网络设备向所述终端设备发送第一配置信息，包括：
    在所述终端设备处于连接态的情况下，所述网络设备向所述终端设备发送所述第一配置信息。
  26. 如权利要求24所述的方法，其特征在于，所述第一配置信息承载在无线资源控制RRC释放信息中。
  27. 如权利要求22至26中任一项所述的方法，其特征在于，所述第一随机接入资源为所述终端设备专属的资源。
  28. 如权利要求22至27中任一项所述的方法，其特征在于，所述第一随机接入资源包括以下中的至少一种：
    随机接入前导码，时频资源。
  29. 如权利要求22至28中任一项所述的方法，其特征在于，所述第一随机接入资源为免竞争的随机接入CFRA资源。
  30. 如权利要求21所述的方法，其特征在于，所述第一随机接入资源为目标随机接入前导码，或者，所述第一随机接入资源为目标随机接入时频资源。
  31. 如权利要求30所述的方法，其特征在于，所述第一随机接入资源为预配置或者协议约定的，或者，所述第一随机接入资源为所述网络设备配置的。
  32. 如权利要求30或31所述的方法，其特征在于，所述第一随机接入资源为竞争的随机接入CBRA资源。
  33. 如权利要求20至32中任一项所述的方法，其特征在于，所述第二随机接入信息包括指示信息，所述指示信息用于指示所述终端设备回到空闲态或者去激活态。
  34. 如权利要求20至33中任一项所述的方法，其特征在于，所述第二随机接入信息不包括以下信息中的至少一种：
    上行资源授权，上行资源配置，下行数据，配置信息。
  35. 如权利要求20至34中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备不期待所述终端设备进入连接态。
  36. 如权利要求20至35中任一项所述的方法，其特征在于，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第二条信息；或者，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为四步随机接入中的第三条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为两步随机接入中的第一条信息，所述第二随机接入信息为两步随机接入中的第二条信息。
  37. 一种终端设备，其特征在于，包括：
    通信单元，用于在随机接入过程中接收定时提前量TA；
    所述通信单元还用于根据所述TA发送探测参考信号SRS；
    其中，所述终端设备处于空闲态，或者，所述终端设备处于去激活态。
  38. 如权利要求37所述的终端设备，其特征在于，所述通信单元具体用于：
    发送第一随机接入信息，所述第一随机接入信息包括请求信息，所述请求信息用于请求更新TA，和/或，所述请求信息用于请求回到空闲态或者去激活态；
    接收第二随机接入信息，所述第二随机接入信息包括所述TA。
  39. 如权利要求37所述的终端设备，其特征在于，所述通信单元具体用于：
    根据第一随机接入资源发送第一随机接入信息，所述第一随机接入资源用于所述终端设备在空闲态或者去激活态发起用于更新TA的随机接入过程；
    接收第二随机接入信息，所述第二随机接入信息包括所述TA。
  40. 如权利要求39所述的终端设备，其特征在于，所述第一随机接入资源在第一定时器运行期间有效。
  41. 如权利要求40所述的终端设备，其特征在于，所述第一定时器的启动或者重启条件包括以下中的至少一种：
    所述终端设备进入空闲态或者去激活态；
    所述终端设备接收到针对所述第一定时器的配置信息；
    所述终端设备接收到针对所述第一随机接入资源的配置信息；
    所述终端设备接收到用于更新所述第一定时器的配置的指示信息。
  42. 如权利要求40或41所述的终端设备，其特征在于，所述通信单元还用于接收第一配置信息，所述第一配置信息用于配置所述第一随机接入资源和/或所述第一定时器。
  43. 如权利要求42所述的终端设备，其特征在于，所述通信单元具体用于：
    在所述终端设备处于连接态的情况下，接收所述第一配置信息。
  44. 如权利要求42所述的终端设备，其特征在于，所述第一配置信息承载在无线资源控制RRC释放信息中。
  45. 如权利要求40至44中任一项所述的终端设备，其特征在于，所述第一随机接入资源为所述终端设备专属的资源。
  46. 如权利要求40至45中任一项所述的终端设备，其特征在于，所述第一随机接入资源包括以下中的至少一种：
    随机接入前导码，时频资源。
  47. 如权利要求40至46中任一项所述的终端设备，其特征在于，所述第一随机接入资源为免竞争的随机接入CFRA资源。
  48. 如权利要求39所述的终端设备，其特征在于，所述第一随机接入资源为目标随机接入前导码，或者，所述第一随机接入资源为目标随机接入时频资源。
  49. 如权利要求48所述的终端设备，其特征在于，所述第一随机接入资源为预配置或者协议约定的，或者，所述第一随机接入资源为网络设备配置的。
  50. 如权利要求48或49所述的终端设备，其特征在于，所述第一随机接入资源为竞争的随机接入CBRA资源。
  51. 如权利要求38至50中任一项所述的终端设备，其特征在于，所述第二随机接入信息包括指示信息，所述指示信息用于指示所述终端设备回到空闲态或者去激活态。
  52. 如权利要求38至51中任一项所述的终端设备，其特征在于，所述第二随机接入信息不包括 以下信息中的至少一种：
    上行资源授权，上行资源配置，下行数据，配置信息。
  53. 如权利要求38至52中任一项所述的终端设备，其特征在于，所述终端设备还包括：处理单元，
    在接收到所述第二随机接入信息之后，所述处理单元用于忽略进入连接态。
  54. 如权利要求38至53中任一项所述的终端设备，其特征在于，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第二条信息；或者，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为四步随机接入中的第三条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为两步随机接入中的第一条信息，所述第二随机接入信息为两步随机接入中的第二条信息。
  55. 一种网络设备，其特征在于，包括：
    通信单元，用于在随机接入过程中向终端设备发送定时提前量TA，其中，所述TA用于所述终端设备发送探测参考信号SRS，所述终端设备处于空闲态，或者，所述终端设备处于去激活态。
  56. 如权利要求55所述的网络设备，其特征在于，所述通信单元具体用于：
    接收所述终端设备发送的第一随机接入信息，所述第一随机接入信息包括请求信息，所述请求信息用于请求更新TA，和/或，所述请求信息用于请求回到空闲态或者去激活态；
    向所述终端设备发送第二随机接入信息，所述第二随机接入信息包括所述TA。
  57. 如权利要求55所述的网络设备，其特征在于，所述通信单元具体用于：
    接收所述终端设备根据第一随机接入资源发送的第一随机接入信息，所述第一随机接入资源用于所述终端设备在空闲态或者去激活态发起用于更新TA的随机接入过程；
    向所述终端设备发送第二随机接入信息，所述第二随机接入信息包括所述TA。
  58. 如权利要求57所述的网络设备，其特征在于，所述第一随机接入资源在第一定时器运行期间有效。
  59. 如权利要求58所述的网络设备，其特征在于，所述第一定时器的启动或者重启条件包括以下中的至少一种：
    所述终端设备进入空闲态或者去激活态；
    所述终端设备接收到针对所述第一定时器的配置信息；
    所述终端设备接收到针对所述第一随机接入资源的配置信息；
    所述终端设备接收到用于更新所述第一定时器的配置的指示信息。
  60. 如权利要求58或59所述的网络设备，其特征在于，所述通信单元还用于向所述终端设备发送第一配置信息，所述第一配置信息用于配置所述第一随机接入资源和/或所述第一定时器。
  61. 如权利要求60所述的网络设备，其特征在于，所述通信单元具体用于：
    在所述终端设备处于连接态的情况下，向所述终端设备发送所述第一配置信息。
  62. 如权利要求60所述的网络设备，其特征在于，所述第一配置信息承载在无线资源控制RRC释放信息中。
  63. 如权利要求58至62中任一项所述的网络设备，其特征在于，所述第一随机接入资源为所述终端设备专属的资源。
  64. 如权利要求58至63中任一项所述的网络设备，其特征在于，所述第一随机接入资源包括以下中的至少一种：
    随机接入前导码，时频资源。
  65. 如权利要求58至64中任一项所述的网络设备，其特征在于，所述第一随机接入资源为免竞争的随机接入CFRA资源。
  66. 如权利要求57所述的网络设备，其特征在于，所述第一随机接入资源为目标随机接入前导码，或者，所述第一随机接入资源为目标随机接入时频资源。
  67. 如权利要求66所述的网络设备，其特征在于，所述第一随机接入资源为预配置或者协议约定的，或者，所述第一随机接入资源为所述网络设备配置的。
  68. 如权利要求66或67所述的网络设备，其特征在于，所述第一随机接入资源为竞争的随机接入CBRA资源。
  69. 如权利要求56至68中任一项所述的网络设备，其特征在于，所述第二随机接入信息包括指示信息，所述指示信息用于指示所述终端设备回到空闲态或者去激活态。
  70. 如权利要求56至69中任一项所述的网络设备，其特征在于，所述第二随机接入信息不包括以下信息中的至少一种：
    上行资源授权，上行资源配置，下行数据，配置信息。
  71. 如权利要求56至70中任一项所述的网络设备，其特征在于，所述网络设备还包括：处理单元，
    所述处理单元用于不期待所述终端设备进入连接态。
  72. 如权利要求56至71中任一项所述的网络设备，其特征在于，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第二条信息；或者，
    所述第一随机接入信息为四步随机接入中的第一条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为四步随机接入中的第三条信息，所述第二随机接入信息为四步随机接入中的第四条信息；或者，
    所述第一随机接入信息为两步随机接入中的第一条信息，所述第二随机接入信息为两步随机接入中的第二条信息。
  73. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至18中任一项所述的方法。
  74. 一种网络设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求19至36中任一项所述的方法。
  75. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至18中任一项所述的方法。
  76. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求19至36中任一项所述的方法。
  77. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法。
  78. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求19至36中任一项所述的方法。
  79. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至18中任一项所述的方法。
  80. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求19至36中任一项所述的方法。
  81. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法。
  82. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求19至36中任一项所述的方法。
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