WO2021003618A1 - 一种时间提前的获取方法、网络设备、终端设备 - Google Patents

一种时间提前的获取方法、网络设备、终端设备 Download PDF

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Publication number
WO2021003618A1
WO2021003618A1 PCT/CN2019/094937 CN2019094937W WO2021003618A1 WO 2021003618 A1 WO2021003618 A1 WO 2021003618A1 CN 2019094937 W CN2019094937 W CN 2019094937W WO 2021003618 A1 WO2021003618 A1 WO 2021003618A1
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Prior art keywords
srs
network device
configuration information
terminal device
srs configuration
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PCT/CN2019/094937
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English (en)
French (fr)
Inventor
尤心
徐婧
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201980092836.XA priority Critical patent/CN113475116B/zh
Priority to PCT/CN2019/094937 priority patent/WO2021003618A1/zh
Publication of WO2021003618A1 publication Critical patent/WO2021003618A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point

Definitions

  • the present invention relates to the field of information processing technology, and in particular to a Timing Advance (TA, Timing Advance) acquisition method, network equipment, terminal equipment, chips, computer readable storage media, computer program products, and computer programs.
  • TA Timing Advance
  • the TA between the terminal device and the target cell is determined through a random access process between the terminal device and the target base station, and is obtained by the terminal device after receiving the handover command.
  • the TA can be obtained by the target cell based on the channel sounding reference signal (SRS, Sounding Reference Signal).
  • SRS channel sounding reference signal
  • embodiments of the present invention provide a TA obtaining method, terminal equipment, network equipment, chip, computer readable storage medium, computer program product, and computer program.
  • a method for obtaining a time-advance TA is provided, which is applied to a terminal device and includes:
  • the SRS configuration information includes at least one of the following: the time-frequency resource location of the SRS , SRS resource type, time reference for sending SRS;
  • a method for acquiring TA is applied to a first network device, and the method includes:
  • the SRS configuration information is used to enable the second network device to obtain the target TA;
  • the SRS configuration information includes at least one of the following: time-frequency resource location of SRS, SRS resource type, SRS Time reference sent;
  • a time advance acquisition method is applied to a second network device, and the method includes:
  • the SRS is detected based on the channel sounding reference signal SRS configuration information; wherein, the SRS configuration information is used to enable the second network device to acquire the target time by TA; including at least one of the following: the time-frequency resource location of the SRS, the SRS resource Type, time reference of SRS transmission;
  • a terminal device includes:
  • the first communication unit receives the SRS configuration information sent by the first network device; wherein the SRS configuration information is used to enable the second network device to acquire the target time by TA; the SRS configuration information includes at least one of the following: SRS The time-frequency resource location, the SRS resource type, and the time reference for sending the SRS; send the SRS based on the SRS configuration information; receive the target TA sent by the first network device or the second network device.
  • a first network device includes:
  • the second communication unit indicates the channel sounding reference signal SRS configuration information to the terminal device; wherein the SRS configuration information is used to enable the second network device to obtain the target TA; the SRS configuration information includes at least one of the following: the time-frequency resource location of the SRS, SRS resource type and time reference for SRS transmission; receiving the target TA sent by the second network device; sending the target TA to the terminal device.
  • a second network device includes:
  • the third processing unit detects the SRS based on the channel sounding reference signal SRS configuration information; wherein the SRS configuration information is used to enable the second network device to acquire the target time by TA; including at least one of the following: time frequency of the SRS Resource location, SRS resource type, time reference for SRS transmission; Obtain the target TA based on the detected SRS;
  • the third communication unit sends the target TA to the first network device or terminal device.
  • 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, and execute the methods in the first aspect to the second aspect or each implementation manner thereof.
  • a chip is provided for implementing the methods in the foregoing implementation manners.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first aspect to the second aspect or any of the implementations thereof method.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program product including computer program instructions that cause a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program which, when run on a computer, causes the computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • the SRS configuration information can be sent to the terminal device, and the terminal device can send the SRS according to the configuration, and finally obtain the target TA determined by the second network device.
  • the handover process can be further improved, the processing of determining the target TA based on the SRS is added, the time for determining the target TA in the system is reduced, and the processing efficiency of the system is improved.
  • FIG. 1 is a schematic diagram 1 of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a first schematic flowchart of a method for acquiring TA according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of the second flow of a method for acquiring TA according to an embodiment of the present invention.
  • FIG. 4 is a third schematic flowchart of a method for acquiring TA according to an embodiment of the present invention.
  • FIGS. 5 and 6 are schematic diagrams of the handover processing flow
  • FIGS 7-9 are flowcharts of exemplary procedures for several TA acquisition methods provided by embodiments of the present invention.
  • FIG. 10 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the composition structure of a first network device according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of the composition structure of a second network device according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a structure of a communication device provided by an embodiment of the present invention.
  • FIG. 14 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 15 is a schematic diagram 2 of a communication system architecture provided by an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 applied in the embodiment of the present application may be as shown in FIG. 1-1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a UE 120 (or called a communication terminal or a terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with UEs located in the coverage area.
  • the network equipment 110 may be a network equipment (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a network equipment (NodeB, NB) in a WCDMA system, or an evolution in an LTE system Type network equipment (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment may be a mobile switching center, a relay station, an access point, In-vehicle devices, wearable devices, hubs, switches, bridges, routers, network side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB network equipment
  • LTE system Type network equipment Evolutional Node B, eNB or eNodeB
  • CRAN Cloud Radio Access Network
  • the network equipment may be a mobile switching center, a relay station, an access point, In-vehicle devices, wearable
  • the communication system 100 also includes at least one UE 120 located within the coverage area of the network device 110.
  • UE includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another UE's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • a UE set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a "mobile terminal”.
  • direct terminal connection (Device to Device, D2D) communication may be performed between UEs 120.
  • the embodiment of the present invention provides a method for obtaining a TA, which is applied to a terminal device, as shown in FIG. 2, includes:
  • Step 21 Receive SRS configuration information sent by the first network device; wherein the SRS configuration information is used to enable the second network device to acquire the target time by TA; the SRS configuration information includes at least one of the following: SRS time Frequency resource location, SRS resource type, time reference for SRS transmission;
  • Step 22 Send the SRS based on the SRS configuration information
  • Step 23 Receive the target TA sent by the first network device or the second network device.
  • the embodiment of the present invention also provides a method for acquiring TA, which is applied to the first network device, as shown in FIG. 3, including:
  • Step 31 Indicate the channel sounding reference signal SRS configuration information to the terminal device; where the SRS configuration information is used to enable the second network device to obtain the target TA; the SRS configuration information includes at least one of the following: time-frequency resource location of the SRS, SRS resource Type, time reference of SRS transmission;
  • Step 32 Receive the target TA sent by the second network device
  • Step 33 Send the target TA to the terminal device.
  • the embodiment of the present invention also provides a method for acquiring TA, which is applied to a second network device, as shown in FIG. 4, including:
  • Step 41 Detect the SRS based on the channel sounding reference signal SRS configuration information; where the SRS configuration information is used to enable the second network device to acquire the target time by TA; including at least one of the following: the time-frequency resource location of the SRS , SRS resource type, time reference for sending SRS;
  • Step 42 Obtain the target TA based on the detected SRS
  • Step 43 Send the target TA to the first network device or terminal device.
  • the first network device may be the source base station of the terminal device
  • the second network device may be the target base station of the terminal device
  • the SRS resource type includes one of the following:
  • Aperiodic type semi-persistent type, periodic type.
  • the time reference for sending the SRS is at least one of the following:
  • the handover preparation stage includes steps 1-6 in the figure: the first network device sends measurement control to the terminal device; the terminal device sends a measurement report to the first network device after measuring multiple network devices or cells; the first network device The handover decision is made according to the measurement report (or combined with RRM information); the first network device sends a handover request to the second network device so that the second network device is ready to switch; the second network device performs handover permission control according to the handover request; the second network When the device determines to switch, it sends a switch request confirmation to the first network device.
  • the second network device generates a handover request confirmation, and sends the handover request confirmation message to the first network device, which is sent by the first network device through the RRC connection reconfiguration message To the terminal device; after the terminal device receives the RRC connection reconfiguration information, it performs handover processing according to the connection reconfiguration information; then the first network device transmits the SN status to the second network device; the terminal device synchronizes with the second network device, and then Receive the UL resource allocated by the second network device, and send the RRC connection reconfiguration complete message to the second network device.
  • the second network device sends a path switch request to the MME to notify the MME terminal device to change the cell; the MME sends a bearer adjustment request to the serving gateway, and the MME switches the downlink path Processing; After the serving gateway completes the processing, it sends the bearer adjustment completion processing to the MME, and the MME sends a path switch request confirmation message to the second network device; the second network device notifies the first network device that the terminal device context is released by the first network The device releases resources.
  • the terminal device needs to switch frequently under high-speed movement or high-frequency conditions.
  • Conditional handover avoids the problem that the handover preparation time is too long, which causes the terminal device to switch too late, and the terminal device is configured with the handover command (switch command) in advance.
  • the running track of the terminal device is specific, so the first network device can allocate the second network device to the terminal device in advance, and the switching command includes the conditions for triggering the terminal device to switch. When the configured conditions are met, the terminal device initiates an access request to the second network device.
  • the terminal device can support the configuration of multiple target cells, that is, it can support the configuration of multiple second network devices.
  • the terminal device makes a judgment based on the configured condition, it can determine which second network device to synchronize with, that is, the target cell, and access the cell according to the conditions it meets.
  • Another handover scenario corresponding to this embodiment may also include the following two architectures:
  • Another architecture is based on eMBB handover. This handover is based on the handover process in Figure 5. The difference is that when the terminal device receives a handover command (switch command), it continues to maintain the connection with the first network device and initiates to the second network device. In random access, the connection of the first network device is released only after the terminal device and the second network device are connected.
  • switch command a handover command
  • the SRS configuration information is issued in the handover command, and the SRS configuration information comes from the first network device; the terminal device considers that the SRS configuration is activated when receiving the handover command, or determines to send the SRS at the resource corresponding to the SRS configuration information.
  • the terminal device interacts with the network for user data, and the first network device and the second network device (that is, the source base station and the target base station of the terminal device) obtain mobile control information provided by the core network (AMF).
  • the first network device and the second network device that is, the source base station and the target base station of the terminal device
  • AMF core network
  • the terminal device receives the measurement control information sent by the first network device, performs measurement based on the measurement control information, and sends a measurement report to the first network device;
  • the first network device makes the handover decision.
  • the target base station can be determined based on the measurement report, that is, the second network device; it needs to be pointed out here that there may be multiple target base stations, that is, the measurement report may be
  • the terminal device selects multiple second network devices.
  • the second network device in this embodiment can be understood as one of the multiple second network devices. Of course, it is also possible to select only one target base station, that is, one second network device, and which processing method is used in actual processing is not limited in this embodiment.
  • the first network device indicates the SRS configuration information to the second network device.
  • This step may also include: the first network device instructs the second network device to monitor the SRS based on the SRS configuration information.
  • the first network device may send instruction information to the second network device, and the instruction information may be used to instruct the second network device to monitor the SRS based on the SRS configuration information.
  • the first network device may indicate the SRS configuration information and/or SRS monitoring trigger information to the second network device through a handover request message or first signaling.
  • the first signaling can be understood as a new signaling.
  • the SRS monitoring trigger information may be used to indicate the moment when the second network device starts to detect the SRS; or, it may be triggered based on the moment when the SRS monitoring trigger information is received to trigger the second network device to start detecting the SRS.
  • the SRS monitoring trigger information may further include:
  • the SRS monitoring trigger information may further include: the time when the SRS configuration becomes invalid.
  • SRS monitoring can be determined for a period of time; this period of time can be determined by the duration of SRS detection. In this case, it can be combined with the time when the SRS monitoring trigger information is received and the duration Determine the start and end time of the monitoring together. Or, when the SRS monitoring trigger information includes the detection deadline time, the time when the SRS monitoring trigger information is received and the detection deadline time can be combined to determine the time period for monitoring the SRS; or, in the SRS monitoring trigger information In the case where the indicated time to start detection is included, the time period for monitoring the SRS can be determined in conjunction with the SRS detection cut-off time.
  • the SRS monitoring trigger information contains the time when the SRS configuration fails
  • the time when the SRS configuration information is received and the time when the SRS configuration fails can be combined, and the second network device (and/or terminal device) determines that it retains itself Duration of SRS configuration information.
  • the second network device (and/or terminal device) may delete the SRS configuration information when the time period for retaining the SRS configuration information is reached, and wait for the next SRS configuration information.
  • SRS monitoring and/or SRS transmission can be performed at least part of the time during the valid period of the SRS configuration information. Wherein, at least part of the time may be determined by the second network device and/or terminal device according to actual conditions, or determined in combination with other information.
  • the SRS detection duration can be used as part of the time to perform SRS monitoring; in addition, the terminal device can perform SRS transmission at least part of the time within the validity period of the SRS configuration information, and the terminal device is in the SRS During the valid period of the configuration information, the duration of SRS transmission can be set according to the actual situation, and the duration can be shorter than the valid duration of the SRS configuration information; for example, after the terminal device receives the SRS configuration information for a period of time, the SRS transmission is performed.
  • a period of time can be greater than or equal to 0.
  • the second network device may perform management control based on the received handover request and SRS configuration information. At this point, it needs to be pointed out that the second network device is triggered to start detecting SRS based on the moment when the SRS monitoring trigger information is received, which can be understood as: when the second network device receives the SRS monitoring trigger information, it determines the trigger to start detecting SRS;
  • the second network device determines the trigger to start detecting SRS after a period of time after receiving the SRS monitoring trigger information; for example, it can be 0.1 seconds, etc., which can be predefined, the network device determines by itself, and interactive instructions, No exhaustion here.
  • the second network device also feeds back a handover request confirmation message to the first network device.
  • the second network device may also instruct the first network device to start SRS monitoring, that is, when the second network device starts to perform SRS monitoring, the instruction may be generated, and then the first network device may be notified to the first network in the handover request confirmation message.
  • the device sends the instruction, or may also send the instruction in other dedicated information.
  • the first network device sends a handover command to the terminal device.
  • the SRS configuration information is carried by the handover command; that is, the first network device generates the SRS configuration information, and then the first network device sends the SRS to the terminal device through the handover command Configuration information.
  • the time reference for sending the SRS can be predefined or notified in the SRS configuration information.
  • the pre-definition can be understood as pre-defined in the terminal device, the second network device, and the first network device.
  • the terminal device receives the handover command, and sends the SRS based on the SRS configuration information carried in the handover command.
  • the terminal device receives the handover command message from the first network device, and uses the SRS configuration information carried therein to send an SRS at the corresponding resource location, and the SRS is used by the second network device to obtain the target TA.
  • the specific sending of SRS based on the SRS configuration information carried in the handover command may include one of the following:
  • the terminal device determines the SRS corresponding to the SRS configuration information The resource is activated, and the SRS is sent based on the SRS configuration information. That is, if in the SRS configuration information, the configured SRS resource type is aperiodic or semi-persistent, the terminal device confirms the corresponding switch based on the received handover command carrying the SRS configuration information The SRS resource is activated, and the terminal device uses the corresponding resource to send the SRS.
  • the activated SRS configuration or trigger sent through one of dedicated RRC, MAC CE, and DCI is received, and the SRS is sent at the SRS resource location corresponding to the SRS configuration information.
  • the terminal device determines that the SRS resource corresponding to the SRS configuration information is activated, and sends the SRS based on the SRS configuration information. It can be further understood that the terminal device is receiving At the moment when the handover command carrying the SRS configuration information is activated, the resource corresponding to the SRS configuration information is determined to be activated, and the SRS is sent according to the SRS configuration information; or, it can also be understood as a segment after receiving the handover command carrying the SRS configuration information After time, it is determined that the resource corresponding to the SRS configuration information is activated, and the SRS is sent according to the SRS configuration information.
  • the second case can be understood as that, no matter what the type of SRS resource indicated in the SRS configuration information, the terminal device will not determine that the SRS configuration is activated according to the handover command sent from the SRS configuration information, or determine to transmit on the corresponding resource; Instead, it determines that the network side activates the SRS configuration through other signaling after the handover command, or the network side instructs the terminal device to send the SRS based on the SRS configuration information, or the terminal device determines that the network side monitors at the corresponding resource. That is, after the handover command, the network side (which may be the first network device) informs the terminal device to activate the SRS configuration or trigger the sending of the SRS at the configured SRS resource location through one of dedicated RRC, MAC CE, and DCI.
  • the terminal device may be through one of dedicated RRC, MAC CE, or DCI to send information to activate the SRS configuration to the terminal device, and based on this information, the terminal device determines to send the SRS at the SRS resource location corresponding to the SRS configuration information; or It is to send trigger information to the terminal device through one of dedicated RRC, MAC CE, or DCI, so that the terminal device determines to send the SRS at the SRS resource location based on the SRS configuration information.
  • the terminal device sends the SRS based on the SRS configuration information.
  • the terminal device may transmit the SRS based on the determined SRS transmission resource, the timing reference point for SRS transmission and/or the TA used for SRS transmission.
  • the terminal device can send the SRS based on one of the TA being 0, the TA of the first network device, and the specific TA.
  • the specific TA may be a predefined TA or a pre-configured TA.
  • the second network device detects the SRS based on the SRS configuration information; determines the target TA based on the detected SRS.
  • the second network device determines the target TA according to the difference between the received SRS time point and the downlink slot/subframe boundary of the second network device.
  • the terminal device uses the downlink slot/frame boundary of the target cell as the timing reference point, SRS is sent based on the uplink TA of the terminal device and the source cell.
  • the time point of the SRS received by the second network device is the time adjusted based on the original TA.
  • the second network device determines the relative difference between the target TA and the source TA or the target TA according to the difference between the time point of receiving the SRS and the downlink slot/subframe boundary of the second network device (that is, the source TA must be further calculated to calculate the final The absolute value of TA, the value does not include the influence of the source TA).
  • the second network device obtains the source TA through the first network device.
  • the target TA is: the absolute value of the TA of the terminal device and the second network device, or the TA difference.
  • the TA difference is: the difference between the absolute value of the TA of the terminal device and the second network device and the absolute value of the TA of the terminal device and the first network device.
  • the terminal device receives the target TA sent by the first network device or the second network device.
  • the network side notifies the terminal device of the final TA or TA difference.
  • whether the target TA sent by the first network device or the second network device to the terminal device is the absolute value of the TA or the difference of the TA can be notified to the terminal device in advance through instruction information; or, the terminal device can also be determined according to a predefined rule Whether the received target TA is represented by TA absolute value or TA difference value.
  • the predefined rule may be that the same rule setting is performed in advance on the first network device, the second network device, and the terminal device.
  • the first network device or the second network device can notify the terminal device of the target TA through dedicated information
  • the dedicated information may be, for example, an RRC message or MAC CE or DCI.
  • the dedicated information carrying the target TA is the information sent after the handover command.
  • the second network device may directly send the target TA to the terminal device through dedicated information;
  • the second network device may also send the target TA to the first network device, and the first network device sends the target TA to the terminal device through dedicated information.
  • the terminal device and the second network device perform data transmission, release the connection of the first network device, and complete the handover.
  • the solution provided by the above example improves the handover process, provides a method for obtaining the target TA by using the SRS, and reduces the time delay for obtaining the target TA.
  • Example two the difference from example one is that in this example, the second network device generates SRS configuration information, and then the second network device sends the SRS configuration information to the first network device, and the first network device switches the SRS configuration information The command is sent to the middle device.
  • the terminal device interacts with the network for user data, and the first network device and the second network device (that is, the source base station and the target base station of the terminal device) obtain mobile control information provided by the core network (AMF).
  • the first network device and the second network device that is, the source base station and the target base station of the terminal device
  • AMF core network
  • the terminal device receives the measurement control information sent by the first network device, performs measurement based on the measurement control information, and sends a measurement report to the first network device;
  • the first network device makes the handover decision.
  • the target base station can be determined based on the measurement report, that is, the second network device; it needs to be pointed out here that there may be multiple target base stations, that is, the measurement report may be
  • the terminal device selects multiple second network devices.
  • the second network device in this embodiment can be understood as one of the multiple second network devices. Of course, it is also possible to select only one target base station, that is, one second network device, and which processing method is used in actual processing is not limited in this embodiment.
  • the first network device sends a handover request to the second network device, and the second network device performs management control; this step is different from example one in that the handover request does not carry SRS configuration information in this step.
  • the second network device may generate SRS configuration information.
  • the second network device indicates the SRS configuration information to the first network device.
  • the SRS configuration information is indicated to the first network device through a dedicated message.
  • the second network device may also execute:
  • SRS detection is performed based on the SRS configuration information.
  • the first network device sends a handover command to the terminal device, and the SRS configuration information is carried by the handover command.
  • Example 3 This example is different from Examples 1 and 2 in that the timing of sending the SRS configuration information is different, and the way the terminal device determines to send the SRS is also different, and the way to send the target TA is also different. Specifically, we will compare this with Figure 9 Example to illustrate:
  • the terminal device interacts with the network for user data, and the first network device and the second network device (that is, the source base station and the target base station of the terminal device) obtain mobile control information provided by the core network (AMF).
  • the first network device and the second network device that is, the source base station and the target base station of the terminal device
  • AMF core network
  • the first network device sends SRS configuration information to the terminal device through a dedicated RRC message.
  • the dedicated RRC message may be: a dedicated RRC message earlier than the handover command sending time, and/or, measurement configuration information.
  • the dedicated RRC message may be measurement configuration information and an RRC message, and its sending time is earlier than the handover command at this time; or it can be understood that the dedicated RRC message is any kind of message earlier than the handover command.
  • the SRS configuration information can be carried in the measurement configuration information; then, the terminal device can perform measurement according to the measurement configuration information and report the measurement.
  • the terminal device After the terminal device performs measurement report, it can send SRS.
  • the first network device may make a handover decision based on the measurement report of the terminal device. The processing of the handover decision is the same as the foregoing, and will not be repeated.
  • the first network device indicates SRS configuration information and/or SRS monitoring trigger information to the second network device.
  • the SRS configuration information is used for the second network device to obtain the target TA;
  • the SRS monitoring trigger information is used to indicate the moment when the second network device starts to detect the SRS resource, or may be used to instruct the second network device to start monitoring.
  • indicating that the second network device can monitor can be understood as that when the first network device sends SRS monitoring trigger information to the second network device, the second network device starts SRS monitoring; of course, the second network device can also be After receiving the SRS monitoring trigger information for a period of time, the SRS monitoring starts again.
  • the first network device instructs the second network device of the SRS configuration information, and/or the time during which the SRS monitors the trigger information may be the same or different, and the signaling used may be the same or different.
  • the first network device indicates the SRS configuration information to the second network device, which may be carried by the handover request.
  • the SRS monitoring trigger information can also be carried by the handover request, and of course can also be carried by other dedicated information, which is not limited here.
  • the indication of SRS configuration information and/or SRS monitoring trigger information by the first network device to the second network device includes:
  • the first network device After the first network device receives the measurement report of the terminal device or the second time period after the information is sent through the dedicated RRC, the first network device indicates the SRS configuration information and/or the SRS monitoring trigger information to the second network device.
  • the first network device after the first network device sends information through the dedicated RRC (for example, after sending the measurement configuration), or the first network device receives the measurement report (MR) of the terminal device, or the first network device receives the terminal device After a period of time (for example, the second duration may be greater than or equal to 0) after the dedicated indication information sent by the SRS, the SRS configuration information and/or SRS monitoring trigger information are indicated to the second network device.
  • the first network device may think that the terminal device can send SRS after receiving certain information, or it may be considered that the terminal device has received the SRS configuration information, and may indicate the SRS configuration information and/or to the second network device. Or SRS monitors trigger information. Alternatively, the first network device may send SRS configuration information and/or SRS monitoring trigger information to the second network device when it is determined that the terminal device has started to send SRS.
  • the second network device starts to monitor the SRS after receiving the SRS configuration information sent by the first network device and/or the SRS monitoring trigger information.
  • the terminal device may determine that the SRS configuration is activated when the first condition is satisfied, or determine that the SRS is sent on the resource corresponding to the SRS configuration information.
  • the first condition may be at least one of the following:
  • the first duration after receiving the dedicated RRC message is the first duration after receiving the dedicated RRC message
  • the first time period after receiving the measurement configuration message is the first time period after receiving the measurement configuration message
  • the first time period after sending the measurement report information is the first time period after sending the measurement report information
  • the first duration can be set according to actual conditions, for example, it can be 0.08 seconds, etc., which is not limited here.
  • the first duration can be indicated, pre-configured, or self-selected.
  • the indication information indicating that the network SRS starts to be sent, or the indication information indicating the activation of the SRS configuration may be sent through one of RRC signaling, MAC CE, and DCI.
  • the indication information instructing the network to start sending SRS may be: sending indication information to start sending SRS to the first network device, and/or sending indication information to start sending SRS to the second network device.
  • the terminal device sends the SRS at the SRS resource location.
  • the terminal device may include at least one of the following:
  • the second network device determines the target TA according to the difference between the received SRS time point and the downlink slot/subframe boundary of the second network device.
  • the UE uses the downlink slot/frame boundary of the target cell as the reference point, based on the UE and The uplink timing advance of the source cell sends the SRS.
  • the time point of the SRS received by the second network device is the time adjusted based on the original TA.
  • the second network device determines the relative difference between the target TA and the source TA or the target TA according to the difference between the time point of receiving the SRS and the downlink slot/subframe boundary of the second network device (that is, the second network device needs to further calculate according to the original TA, Calculate the final absolute value of the target TA, which does not include the influence of the source TA).
  • the source TA can also be sent to the second network device through the first network device.
  • the second network device receives and detects the SRS at the configured resource location, and obtains the target TA based on the SRS.
  • the target TA is the same as the previous example, and will not be repeated here.
  • the network side notifies the UE of the final target TA (absolute value) or the TA difference value, which may be instructed by the base station to the UE, or may be predefined. It is the same as examples one and two, and will not be repeated.
  • the second network device notifies the first network device of the target TA in the handover request confirmation message
  • the first network device carries the target TA in the handover command, and the terminal device receives the target TA carried by the first network device in the handover command.
  • the second network device may also send the target TA to the terminal device through other dedicated RRC messages other than the handover command.
  • the terminal device performs subsequent transmission based on the target TA.
  • the SRS configuration information can be generated by the first network device and sent to the second network device as described in step 1 of this example. It can also be that the second network device generates and then sends the SRS configuration information from the second network device to the first network device; in this case, the corresponding scenario is that the terminal device can have multiple target base stations, that is, there can be more Two possible second network devices, these second network devices may be network devices in adjacent cells of the first network device.
  • the first network device first estimates a target TA; the first network device sends the estimated target TA to the terminal device;
  • the sending target TA can be sent by dedicated signaling or carried in a handover command; for example, in examples one and two, it can be sent together with SRS configuration information, that is, the handover command carries SRS configuration information
  • the estimated target TA in example three, it can also be sent with the SRS configuration information, that is, the dedicated information carries the SRS configuration information and the estimated target TA.
  • the terminal device sends the SRS based on the SRS configuration information and the estimated target TA;
  • the second network device determines the updated target TA according to the SRS, and sends the updated target TA to the terminal device; here, the second network device may directly send the updated target TA to the terminal device; or the second network device
  • the updated target TA is sent to the first network device, and the updated target TA is transparently transmitted to the terminal device by the first network device; for example, based on examples one and two, a dedicated message (such as RRC, MAC One of CE and DCI) sends the target TA to the terminal device; based on Example 3, the updated target TA can be sent to the middle device in a handover command or other RRC dedicated messages.
  • a dedicated message such as RRC, MAC One of CE and DCI
  • the SRS solution in this embodiment can be For other reference signals or channels, for example, there may be DMRS, new RS (for example, reference signals that can be used to obtain TA), etc.
  • SRS configuration information can be understood as configuration information of other reference signals or channel configuration The information, for example, may be DMRS configuration information or new RS configuration information.
  • the SRS configuration information can be sent to the terminal device, and the terminal device will send the SRS according to the configuration, and finally obtain the target TA determined by the second network device.
  • the handover process can be further improved, the processing of determining the target TA based on the SRS is added, the time for determining the target TA in the system is reduced, and the processing efficiency of the system is improved.
  • the embodiment of the present invention provides a terminal device, as shown in FIG. 10, including:
  • the first communication unit 51 receives SRS configuration information sent by the first network device; wherein the SRS configuration information is used to enable the second network device to acquire the target time by TA; the SRS configuration information includes at least one of the following: The time-frequency resource location of the SRS, the SRS resource type, and the time reference for sending the SRS; the SRS is sent based on the SRS configuration information; and the target TA sent by the first network device or the second network device is received.
  • the embodiment of the present invention also provides a first network device, as shown in FIG. 11, including:
  • the second communication unit 61 indicates the channel sounding reference signal SRS configuration information to the terminal device; wherein the SRS configuration information is used to enable the second network device to obtain the target TA; the SRS configuration information includes at least one of the following: the time-frequency resource location of the SRS , SRS resource type, and time reference for SRS transmission; receiving the target TA sent by the second network device; sending the target TA to the terminal device.
  • the embodiment of the present invention also provides a second network device, as shown in FIG. 12, including:
  • the third processing unit 71 detects the SRS based on the channel sounding reference signal SRS configuration information; wherein the SRS configuration information is used to enable the second network device to acquire the target time by TA; including at least one of the following: SRS time Frequency resource location, SRS resource type, time reference for SRS transmission; Obtain the target TA based on the detected SRS;
  • the third communication unit 72 sends the target TA to the first network device or the terminal device.
  • the first network device may be the source base station of the terminal device
  • the second network device may be the target base station of the terminal device
  • the SRS resource type includes one of the following:
  • Aperiodic type semi-persistent type, periodic type.
  • the time reference for sending the SRS is at least one of the following:
  • the SRS configuration information is issued in the handover command, and the SRS configuration information comes from the first network device; the terminal device considers that the SRS configuration is activated when receiving the handover command, or determines to send the SRS at the resource corresponding to the SRS configuration information.
  • the first communication unit 51 of the terminal device interacts with the network for user data, and the first network device and the second network device (that is, the source base station and the target base station of the terminal device) obtain mobile control information provided by the core network (AMF).
  • the first network device and the second network device that is, the source base station and the target base station of the terminal device
  • AMF core network
  • the first communication unit 51 of the terminal device receives the measurement control information sent by the second communication unit 61 of the first network device and performs measurement based on the measurement control information, so as to send a measurement report to the first network device through the first communication unit 51 of the terminal device ;
  • the first network device also includes: a second processing unit 62 to make a handover decision.
  • the target base station can be determined based on the measurement report, that is, the second network device; it should be pointed out here that there may be multiple target base stations, and That is, based on the measurement report, multiple second network devices may be selected for the terminal device.
  • the second network device in this embodiment can be understood as one of the multiple second network devices. Of course, it is also possible to select only one target base station, that is, one second network device, and which processing method is used in actual processing is not limited in this embodiment.
  • the second communication unit 61 of the first network device indicates the SRS configuration information to the second network device.
  • the second communication unit 61 of the first network device may indicate the SRS configuration information and/or SRS monitoring trigger information to the second network device through a handover request message or the first signaling.
  • the first signaling can be understood as a new signaling.
  • the SRS monitoring trigger information may be used to indicate the moment when the second network device starts to detect the SRS; or, it may be triggered based on the moment when the SRS monitoring trigger information is received to trigger the second network device to start detecting the SRS.
  • the SRS monitoring trigger information may further include:
  • the SRS monitoring trigger information may further include: the time when the SRS configuration becomes invalid.
  • the third processing unit 71 of the second network device may perform management control based on the received handover request and SRS configuration information.
  • the third processing unit 71 of the second network device determines that the trigger starts to detect the SRS after a period of time after receiving the SRS monitoring trigger information; for example, it can be 0.1 seconds, etc., which can be predefined. Determine by yourself, interactive instructions, not exhaustive here.
  • the second communication unit 61 of the first network device sends a switching command to the terminal device.
  • the SRS configuration information is carried by the switching command; that is, the SRS configuration information is generated by the first network device, and then the first network device sends the switching command to the terminal device.
  • the terminal device sends SRS configuration information.
  • the first communication unit 51 of the terminal device receives the handover command, and sends the SRS based on the SRS configuration information carried in the handover command.
  • the first communication unit 51 of the terminal device receives the handover command message from the first network device, and uses the SRS configuration information carried therein to send the SRS at the corresponding resource location, and the SRS is used for the second network device. Get the target TA.
  • the specific sending of SRS based on the SRS configuration information carried in the handover command may include one of the following:
  • the terminal device determines the SRS The SRS resource corresponding to the configuration information is activated, and the SRS is sent based on the SRS configuration information. That is, if in the SRS configuration information, the configured SRS resource type is aperiodic or semi-persistent, the terminal device confirms the corresponding switch based on the received handover command carrying the SRS configuration information The SRS resource is activated, and the terminal device uses the corresponding resource to send the SRS.
  • the first communication unit 51 receives the activated SRS configuration or trigger sent by one of dedicated RRC, MAC CE, and DCI, and sends the SRS at the SRS resource location corresponding to the SRS configuration information.
  • the terminal device may be through one of dedicated RRC, MAC CE, or DCI to send information to activate the SRS configuration to the terminal device, and based on this information, the terminal device determines to send the SRS at the SRS resource location corresponding to the SRS configuration information; or It is to send trigger information to the terminal device through one of dedicated RRC, MAC CE, or DCI, so that the terminal device determines to send the SRS at the SRS resource location based on the SRS configuration information.
  • the terminal device may further include: a first processing unit 52, which performs at least one of the following:
  • the first communication unit 51 of the terminal device may send the SRS based on one of TA being 0, the TA of the first network device, and a specific TA.
  • the specific TA may be a predefined TA or a pre-configured TA.
  • the third processing unit 71 of the second network device detects the SRS based on the SRS configuration information; and determines the target TA based on the detected SRS.
  • the target TA is: the absolute value of the TA of the terminal device and the second network device, or the TA difference.
  • the TA difference is: the difference between the absolute value of the TA of the terminal device and the second network device and the absolute value of the TA of the terminal device and the first network device.
  • the first communication unit 51 of the terminal device receives the target TA sent by the first network device or the second network device.
  • the network side notifies the terminal device of the final TA or TA difference.
  • whether the target TA sent by the first network device or the second network device to the terminal device is the absolute value of the TA or the difference of the TA can be notified to the terminal device in advance through instruction information; or, the terminal device can also be determined according to a predefined rule Whether the received target TA is represented by TA absolute value or TA difference value.
  • the predefined rule may be that the same rule setting is performed in advance on the first network device, the second network device, and the terminal device.
  • the second communication unit 61 of the first network device or the third communication unit 72 of the second network device may notify the terminal device of the target TA through dedicated information;
  • the dedicated information may be, for example, an RRC message or MAC CE or DCI.
  • the dedicated information carrying the target TA is the information sent after the handover command.
  • the terminal device and the second network device perform data transmission, release the connection of the first network device, and complete the handover.
  • the third communication unit 72 of the second network device can also instruct the first network device to start SRS monitoring, that is, when the second network device starts to perform SRS monitoring, the instruction can be generated, and the handover request can be confirmed.
  • the instruction is sent to the first network device in the message, or the instruction can also be sent in other dedicated information.
  • the solution provided by the above example improves the handover process, provides a method for obtaining the target TA by using the SRS, and reduces the time delay for obtaining the target TA.
  • Example two the difference from example one is that in this example, the second network device generates SRS configuration information, and then the second network device sends the SRS configuration information to the first network device, and the first network device switches the SRS configuration information The command is sent to the middle device.
  • the second network device indicates the SRS configuration information to the first network device through the third communication unit 72.
  • the SRS configuration information is indicated to the first network device through a dedicated message.
  • the third processing unit 71 of the second network device may also execute:
  • SRS detection is performed based on the SRS configuration information.
  • the second communication unit 61 of the first network device sends a switching command to the terminal device, and the SRS configuration information is carried by the switching command.
  • Example 3 This example is different from Examples 1 and 2 in that the timing of sending the SRS configuration information is different, and the way in which the terminal device determines to send the SRS is also different, and the way in which the target TA is sent is also different.
  • the second communication unit 61 of the first network device sends the SRS configuration information to the terminal device through a dedicated RRC message.
  • the dedicated RRC message may be: a dedicated RRC message earlier than the handover command sending time, and/or, measurement configuration information.
  • the dedicated RRC message may be measurement configuration information and an RRC message, and its sending time is earlier than the handover command at this time; or it can be understood that the dedicated RRC message is any kind of message earlier than the handover command.
  • the SRS configuration information can be carried in the measurement configuration information; then, the terminal device can perform measurement according to the measurement configuration information and report the measurement.
  • the first communication unit 51 of the terminal device After the first communication unit 51 of the terminal device performs the measurement report, it can perform SRS transmission.
  • the second communication unit 61 of the first network device indicates the SRS configuration information and/or the SRS monitoring trigger information to the second network device.
  • the SRS configuration information is used for the second network device to obtain the target TA;
  • the SRS monitoring trigger information is used to indicate the moment when the second network device starts to detect the SRS resource, or may be used to instruct the second network device to start monitoring.
  • the second communication unit 61 of the first network device indicates the SRS configuration information and/or SRS to the second network device after receiving the measurement report of the terminal device or sending the information through a dedicated RRC for the second time period Monitor trigger information.
  • the third processing unit 71 of the second network device starts to monitor the SRS after receiving the SRS configuration information and/or SRS monitoring trigger information sent by the first network device.
  • the first processing unit 52 of the terminal device when the first condition is met, determines that the SRS configuration is activated, or determines that the SRS is sent on the resource corresponding to the SRS configuration information.
  • the first condition may be at least one of the following:
  • the first duration after receiving the dedicated RRC message is the first duration after receiving the dedicated RRC message
  • the first time period after receiving the measurement configuration message is the first time period after receiving the measurement configuration message
  • the first time period after sending the measurement report information is the first time period after sending the measurement report information
  • the first duration can be set according to actual conditions, for example, it can be 0.08 seconds, etc., which is not limited here.
  • the first duration can be indicated, pre-configured, or self-selected.
  • the indication information indicating that the network SRS starts to be sent, or the indication information indicating the activation of the SRS configuration may be sent through one of RRC signaling, MAC CE, and DCI.
  • the indication information instructing the network to start sending SRS may be: sending indication information to start sending SRS to the first network device, and/or sending indication information to start sending SRS to the second network device.
  • the specific first processing unit 52 may execute at least one of the following:
  • the third processing unit 71 of the second network device receives and detects the SRS at the configured resource location, and obtains the target TA based on the SRS.
  • the target TA is the same as the previous example, and will not be repeated here.
  • the third communication unit 72 of the second network device sends the target TA to the terminal device.
  • the third communication unit 72 of the second network device notifies the first network device of the target TA in the handover request confirmation message
  • the second communication unit 71 of the first network device carries the target TA in the handover command, and the terminal device receives the target TA carried by the first network device in the handover command.
  • the third communication unit 72 of the second network device may also send the target TA to the terminal device through other dedicated RRC messages other than the handover command.
  • the terminal device performs subsequent transmission based on the target TA.
  • the second processing unit of the first network device first estimates a target TA; the second communication unit of the first network device will The estimated target TA is sent to the terminal equipment; the target TA can be sent by dedicated signaling or carried in a handover command; for example, in examples one and two, it can be sent together with the SRS configuration information, or That is, the handover command carries the SRS configuration information and the estimated target TA; in example three, it can also be sent together with the SRS configuration information, that is, the dedicated information carries the SRS configuration information and the estimated target TA.
  • the first communication unit of the terminal device sends the SRS based on the SRS configuration information and the estimated target TA;
  • the third communication unit of the second network device determines the updated target TA according to the SRS, and sends the updated target TA to the terminal device.
  • the SRS solution in this embodiment can be For other reference signals or channels, for example, there may be DMRS, new RS (for example, reference signals that can be used to obtain TA), etc.
  • SRS configuration information can be understood as configuration information of other reference signals or channel configuration The information, for example, may be DMRS configuration information or new RS configuration information.
  • terminal device the first network device, and the second network device in this embodiment are the same as the processing described in detail in the foregoing method flow, and will not be repeated here.
  • the SRS configuration information can be sent to the terminal device, and the terminal device will send the SRS according to the configuration, and finally obtain the target TA determined by the second network device.
  • the handover process can be further improved, the processing of determining the target TA based on the SRS is added, the time for determining the target TA in the system is reduced, and the processing efficiency of the system is improved.
  • FIG. 13 is a schematic structural diagram of a communication device 1900 according to an embodiment of the present invention.
  • the communication device in this embodiment may be specifically the network device in the foregoing embodiment.
  • the communication device 1900 shown in FIG. 13 includes a processor 1910, and the processor 1910 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.
  • the communication device 1900 may further include a memory 1920.
  • the processor 1910 may call and run a computer program from the memory 1920 to implement the method in the embodiment of the present invention.
  • the memory 1920 may be a separate device independent of the processor 1910, or may be integrated in the processor 1910.
  • the communication device 1900 may further include a transceiver 1930, and the processor 1910 may control the transceiver 1930 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 1930 may include a transmitter and a receiver.
  • the transceiver 1930 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1900 may specifically be a network device according to an embodiment of the present invention, and the communication device 1900 may implement the corresponding process implemented by the network device in each method of the embodiment of the present invention. For brevity, details are not repeated here. .
  • the communication device 1900 may specifically be a terminal device or a network device according to an embodiment of the present invention, and the communication device 1900 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention. It's concise, so I won't repeat it here.
  • Fig. 14 is a schematic structural diagram of a chip according to an embodiment of the present invention.
  • the chip 2000 shown in FIG. 14 includes a processor 2010, and the processor 2010 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.
  • the chip 2000 may further include a memory 2020.
  • the processor 2010 can call and run a computer program from the memory 2020 to implement the method in the embodiment of the present invention.
  • the memory 2020 may be a separate device independent of the processor 2010, or may be integrated in the processor 2010.
  • the chip 2000 may further include an input interface 2030.
  • the processor 2010 can control the input interface 2030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 2000 may further include an output interface 2040.
  • the processor 2010 can control the output interface 2040 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present invention, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present invention.
  • the chip can be applied to the network device in the embodiment of the present invention, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present invention.
  • the chip mentioned in the embodiment of the present invention may also be called a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • the processor in the embodiment of the present invention may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers.
  • 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 the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present invention may also be static random access memory (static RAM, SRAM), 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), etc.
  • static random access memory static random access memory
  • SRAM static random access memory
  • dynamic RAM dynamic random access memory
  • Synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate SDRAM double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • synchronous connection Dynamic random access memory strip link DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • FIG. 15 is a schematic block diagram of a communication system 2100 according to an embodiment of the present application. As shown in FIG. 15, the communication system 2100 includes a UE 2110 and a network device 2120.
  • the UE 2110 may be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 2120 may be used to implement the corresponding function implemented by the network device in the above method.
  • the embodiment of the present invention also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present invention, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the embodiment of the present invention also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present invention, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the computer program product can be applied to the network device in the embodiment of the present invention, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the embodiment of the present invention also provides a computer program.
  • the computer program may be applied to the network device in the embodiment of the present invention.
  • the computer program When the computer program is run on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention. For the sake of brevity , I won’t repeat it here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention.
  • the aforementioned storage media include: 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 code .

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  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种时间提前(TA)的获取方法、终端设备、网络设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序,所述方法包括:接收第一网络设备发送的SRS配置信息;其中,所述SRS配置信息,用于使得第二网络设备获取目标时间提前TA;所述SRS配置信息中包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;基于SRS配置信息发送SRS;接收第一网络设备或第二网络设备发送的目标TA。

Description

一种时间提前的获取方法、网络设备、终端设备 技术领域
本发明涉及信息处理技术领域,尤其涉及一种时间提前(TA,Timing Advance)的获取方法、网络设备、终端设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序。
背景技术
在切换过程中,终端设备和目标小区之间的TA,是通过终端设备和目标基站之间的随机接入过程确定的,并且是终端设备在收到切换命令后获取的。然而在R16的随机接入减少切换的议题中,提出TA可以由目标小区基于信道探测参考信号(SRS,Sounding Reference Signal)获取。但是,关于如何基于SRS获取UE和目标基站之间的TA尚未确定。
发明内容
为解决上述技术问题,本发明实施例提供了一种TA的获取方法、终端设备、网络设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序。
第一方面,提供了一种时间提前TA的获取方法,应用于终端设备,包括:
接收第一网络设备发送的SRS配置信息;其中,所述SRS配置信息,用于使得第二网络设备获取目标时间提前TA;所述SRS配置信息中包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
基于SRS配置信息发送SRS;
接收第一网络设备或第二网络设备发送的目标TA。
第二方面,一种TA的获取方法,应用于第一网络设备,所述方法包括:
向终端设备指示信道探测参考信号SRS配置信息;其中,SRS配置信息,用于使得第二网络设备获取目标TA;SRS配置信息包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
接收第二网络设备发来的目标TA;
向终端设备发送所述目标TA。
第三方面,一种时间提前获取方法,应用于第二网络设备,所述方法包括:
基于信道探测参考信号SRS配置信息,对SRS进行检测;其中,SRS配置信息,用于使得所述第二网络设备获取目标时间提前TA;包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
基于检测到的SRS获取目标TA;
向第一网络设备或终端设备发送所述目标TA。
第四方面,一种终端设备,包括:
第一通信单元,接收第一网络设备发送的SRS配置信息;其中,所述SRS配置信息,用于使得第二网络设备获取目标时间提前TA;所述SRS配置信息中包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;基于SRS配置信息发送SRS;接收第一网络设备或第二网络设备发送的目标TA。
第五方面,一种第一网络设备,包括:
第二通信单元,向终端设备指示信道探测参考信号SRS配置信息;其中,SRS配置信息,用于使得第二网络设备获取目标TA;SRS配置信息包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;接收第二网络设备发来的目标TA;向终端设备发送所述目标TA。
第六方面,一种第二网络设备,包括:
第三处理单元,基于信道探测参考信号SRS配置信息,对SRS进行检测;其中,SRS配置信息,用于使得所述第二网络设备获取目标时间提前TA;包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;基于检测到的SRS获取目标TA;
第三通信单元,向第一网络设备或终端设备发送所述目标TA。
第七方面,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,执行上述第一方面至第二方面或其各实现方式中的方法。
第八方面,提供了一种芯片,用于实现上述各实现方式中的方法。
具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该芯片的设备执行如上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第九方面,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或其各实现方式中的方法。
第十方面,提供了一种计算机程序产品,包括计算机程序指令,该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或其各实现方式中的方法。
第十一方面,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或其各实现方式中的方法。
通过采用上述方案,能够将SRS配置信息发送至终端设备,由终端设备根据配置进行SRS发送,最终得到第二网络设备确定的目标TA。如此,就能够对切换流程进一步完善,增加了基于SRS确定目标TA的处理,减少了系统中确定目标TA的时间,从而提升了系统的处理效率。
附图说明
图1是本申请实施例提供的一种通信系统架构的示意性图一;
图2为本发明实施例提供的一种TA的获取方法流程示意图一;
图3为本发明实施例提供的一种TA的获取方法流程示意图二;
图4为本发明实施例提供的一种TA的获取方法流程示意图三;
图5、6为切换的处理流程示意图;
图7-9为本发明实施例提供的几种TA的获取方法流程示例流程图;
图10为本发明实施例提供的终端设备组成结构示意图;
图11为本发明实施例提供的一种第一网络设备组成结构示意图;
图12为本发明实施例提供的一种第二网络设备组成结构示意图;
图13为本发明实施例提供的一种通信设备组成结构示意图;
图14是本申请实施例提供的一种芯片的示意性框图;
图15是本申请实施例提供的一种通信系统架构的示意性图二。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
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。基于本申请中的实施例,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、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统或5G系统等。
示例性的,本申请实施例应用的通信系统100可以如图1-1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UE120(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UE进行通信。可选地,该网络设备110可以是GSM系统或CDMA系统中的网络设备(Base Transceiver Station,BTS),也可以是WCDMA系统中的网络设备(NodeB,NB),还可以是LTE系统中的演进型网络设备(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个UE120。作为在此使用的“UE”包括但不限于经由有线线路连接,如经由公共交换电话网络(Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一UE的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的UE可以被称为“无线通信终端”、“无线终端”或“移动终端”。
可选地,UE120之间可以进行终端直连(Device to Device,D2D)通信。
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。
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
本发明实施例提供了一种TA的获取方法,应用于终端设备,如图2所示,包括:
步骤21:接收第一网络设备发送的SRS配置信息;其中,所述SRS配置信息,用于使得第二网络设备获取目标时间提前TA;所述SRS配置信息中包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
步骤22:基于SRS配置信息发送SRS;
步骤23:接收第一网络设备或第二网络设备发送的目标TA。
本发明实施例还提供了一种TA的获取方法,应用于第一网络设备,如图3所示,包括:
步骤31:向终端设备指示信道探测参考信号SRS配置信息;其中,SRS配置信息,用于使得第二网络设备获取目标TA;SRS配置信息包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
步骤32:接收第二网络设备发来的目标TA;
步骤33:向终端设备发送所述目标TA。
本发明实施例还提供了一种TA的获取方法,应用于第二网络设备,如图4所示,包括:
步骤41:基于信道探测参考信号SRS配置信息,对SRS进行检测;其中,SRS配置信息,用于使得所述第二网络设备获取目标时间提前TA;包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
步骤42:基于检测到的SRS获取目标TA;
步骤43:向第一网络设备或终端设备发送所述目标TA。
本发明实施例中第一网络设备可以为终端设备的源基站,第二网络设备可以为终端设备的目标基站。
本实施例中,所述SRS资源类型包括以下之一:
非周期类型、半持续类型、周期类型。
所述SRS发送的时间参考为以下至少之一:
基于第一网络设备的上行TA;
基于上行TA为0;
基于特定TA;
基于第一网络设备的下行同步;
基于第二网络设备的下行同步。
首先针对本实施例的场景进行说明,所对应的一种切换处理,可以参见图5所示,包括:
切换准备阶段,包含图中步骤1-6:第一网络设备向终端设备发送测量控制;终端设备进行针对多个网络设备或小区的测量之后,向第一网络设备发送测量报告;第一网络设备根据测量报告(或者结合RRM信息)进行切换决策;第一网络设备向第二网络设备发送切换请求以使得第二网络设备准备进行切换;第二网络设备根据切换请求进行切换许可控制;第二网络设备确定进行切换时,向第一网络设备发送切换请求确认。
然后进行执行切换阶段,包含图中步骤7-11,具体的:第二网络设备生成切换请求确认,将切换请求确认信息发送至第一网络设备,由第一网络设备通过RRC连接重配置信息发送至终端设备;终端设备接收到RRC连接重配置信息后,根据连接重配置信息执行切换处理;然后第一网络设备发送SN状态传输至第二网络设备;终端设备与第二网络设备进行同步,然后接收第二网络设备分配的UL资源,向第二网络设备发送RRC连接重配置完成信息。
最后进入切换完成阶段,包含图中12-18,具体的:第二网络设备向MME发送路径切换请求,以通知MME终端设备改变小区;MME向服务网关发送调整承载请求,由MME进行切换下行路径处理;服务网关完成处理后,向MME发送承载调整完成处理,并由MME向第二网络设备发送路径切换请求的确认消息;第二网络设备向第一网络设备通知终端设备上下文释放由第一网络设备释放资源。
再一种切换场景,比如对于某些特殊场景,如图6所示,比如终端设备高速移动或者高频条件下,需要频繁的进行切换。有条件的切换(Conditional handover)避免了切换准备时间过长,导致终端设备要切换的时候已经过晚的问题,为终端设备提前配置切换指令(切换命令)。另一方面,对于高铁场景,终端设备的运行轨迹是特定的,所以第一网络设备可以提前把第二网络设备配给终端设备,并且在切换命令中包含用于触发终端设备进行切换的条件,当满足所配条件时,终端设备向第二网络设备发起接入请求。
关于这种切换场景,能够支持在配置多个目标小区,也就是能够支持配置有多个第二网络设备。终端设备在基于配置的条件进行判断的时候,可以根据其满足的条件确定与哪个第二网络设备即目标小区进行同步,接入该小区。
另外,本实施例对应的又一种切换场景还可以为包括以下两种架构:
基于双连接的切换,这种情况下,在切换时,先把第二网络设备添加为辅助接点(SN),然后通过角色转换信令来把SN变为主节点(MN),最后再把第一网络设备释放掉,从而达到切换时候中断时间减小的效果。
另一架构为基于eMBB的切换,这种切换基于图5的切换流程,不同在于终端设备在收到切换指令(切换命令)时,继续保持和第一网络设备的连接同时向第二网络设备发起随机接入,知道终端设备与第二网络设备接入完成才释放第一网络设备的连接。
基于前述对切换的描述,结合以下多个示例对本实施例提供的方案进行详细说明:
示例一、
SRS配置信息在切换命令中下发,且SRS配置信息来自于第一网络设备;终端设备在收到切换命令时认为SRS配置激活、或确定在SRS配置信息所对应资源处发送SRS。
参见图7所示,本示例详细说明如下:
首先终端设备与网络交互用户数据,第一网络设备以及第二网络设备(也就是终端设备的源基站以及目标基站)获取核心网(AMF)提供的移动控制信息。
1、终端设备接收第一网络设备发送的测量控制信息以及基于测量控制信息进行测量,向第一网络设备发送测量上报;
2、由第一网络设备进行切换决策,此时可以基于测量上报确定目标基站,也就是确定第二网络设备;这里需要指出的是,可能会存在多个目标基站,也就是基于测量上报可能为终端设备选取出来多个第二网络设备,本实施例中的第二网络设备可以理解为多个第二网络设备中的一个。当然,也可能仅选取出来一个目标基站,即一个第二网络设备,实际处理中采用哪种处理方式,本实施例不做限定。
3-5、第一网络设备向第二网络设备指示SRS配置信息。
本步骤中还可以包括有:第一网络设备指示第二网络设备基于SRS配置信息对SRS进行监听。具体来说,可以为第一网络设备向第二网络设备发送指示信息,通过该指示信息指示第二网络设备基于SRS配置信息对SRS进行监听。
具体的,第一网络设备可以通过切换请求消息或者第一信令,向第二网络设备指示所述SRS配置信息和/或SRS监听触发信息。其中,第一信令可以理解为一种新的信令。
其中,所述SRS监听触发信息可以用于指示第二网络设备开始检测SRS的时刻;或者,可以为基于接收到SRS监听触发信息的时刻触发第二网络设备开始检测SRS。
进一步的,所述SRS监听触发信息还可以包括:
SRS检测的持续时长duration和/或检测截止的时间;
或者,所述SRS监听触发信息还可以包括:SRS配置失效的时间。
比如,基于SRS监听触发信息,可以确定在一段时间内进行SRS监听;该一段时间,可以由SRS检测的持续时长来确定,此时,可以结合接收到SRS监听触发信息的时刻以及所述持续时长共同确定监听的起始以及结束时间点。又或者,当SRS监听触发 信息中包含有检测截止的时间的时候,可以结合接收到SRS监听触发信息的时刻,以及所述检测截止的时间确定监听SRS的时间段;或者,SRS监听触发信息中包含有指示的开始检测的时刻的情况下,可以结合SRS检测截止时间确定监听SRS的时间段。
进一步地,当SRS监听触发信息中包含有SRS配置失效的时间的时候,可以结合接收到SRS配置信息的时刻,以及SRS配置失效的时间,第二网络设备(和/或终端设备)确定自身保留SRS配置信息的时长。此时,第二网络设备(和/或终端设备)可以在达到保留SRS配置信息的时长的时候,将SRS配置信息删除,等待下一个SRS配置信息。相应的,可以在SRS配置信息的有效期间的至少部分时间进行SRS监听和/或SRS发送。其中,至少部分时间可以由第二网络设备和/或终端设备根据实际情况进行确定,或者结合其他信息来确定。比如,在SRS配置信息的有效期间内,可以根据SRS检测的持续时长作为部分时间进行SRS监听;另外,终端设备可以在SRS配置信息的有效时长内的至少部分时间进行SRS发送,终端设备在SRS配置信息的有效期间内,可以根据实际情况设置进行SRS发送的时长,该时长可以比SRS配置信息的有效时长短;比如,终端设备接收到SRS配置信息之后的一段时长之后再进行SRS发送,该一段时长可以大于等于0。
第二网络设备可以基于接收到的切换请求以及SRS配置信息进行管理控制。此时,需要指出的是,基于接收到SRS监听触发信息的时刻触发第二网络设备开始检测SRS,可以理解为:第二网络设备在接收到SRS监听触发信息的同时,确定触发开始检测SRS;
或者,还可以为:第二网络设备在接收到SRS监听触发信息之后的一段时长之后,确定触发开始检测SRS;比如,可以为0.1秒等等,可以预定义,网络设备自行确定,交互指示,这里不做穷举。
第二网络设备还会向第一网络设备反馈切换请求确认消息。
可选的,第二网络设备还可以指示第一网络设备SRS监听开始,也就是当第二网络设备开始进行SRS监听的时候,可以生成该指示,进而可以在切换请求确认消息中向第一网络设备发送该指示,或者也可以在其他专用信息中发送该指示。
6、第一网络设备向终端设备发送切换命令,所述SRS配置信息,由切换命令携带;也就是,由第一网络设备生成SRS配置信息,然后第一网络设备通过切换命令向终端设备发送SRS配置信息。
需要指出的是,SRS发送的时间参考可以为预定义的,也可以为在SRS配置信息中进行通知。其中,预定义可以理解为在终端设备、第二网络设备、第一网络设备中均存进行预定义。
7、终端设备接收切换命令,基于所述切换命令中携带的SRS配置信息发送SRS。
具体可以为:终端设备接收来自第一网络设备的切换命令消息,利用其中携带的所述SRS配置信息,在对应的资源位置上发送SRS,该SRS用于第二网络设备获取目标TA。
具体的基于所述切换命令中携带的SRS配置信息发送SRS,可以包括以下之一:
第一种情况、若所述SRS配置信息中包含的SRS资源类型为非周期或半持续类型,在接收到携带有SRS配置信息的切换命令时,终端设备确定所述SRS配置信息所对应的SRS资源激活,基于所述SRS配置信息发送SRS。即若在所述SRS配置信息中,配置的SRS资源类型为非周期(aperiodic)或半持续(semi-persistent)类型,则终端设备基于接收到的携带有SRS配置信息的切换命令,确认对应的SRS资源激活,终端设备使用对应的资源发送SRS。
第二种情况、接收通过专用RRC、MAC CE、DCI中之一发送的激活SRS配置或触发,在SRS配置信息所对应的SRS资源位置处发送SRS。
第一种情况在接收到携带有SRS配置信息的切换命令时,终端设备确定所述SRS配置信息所对应的SRS资源激活,基于所述SRS配置信息发送SRS,进一步可以理解为,终端设备在接收到携带有SRS配置信息的切换命令的时刻,确定SRS配置信息所对应的资源激活,并根据SRS配置信息发送SRS;或者,还可以理解为,在接收到携带有SRS配置信息的切换命令的一段时间之后,确定SRS配置信息所对应的资源激活,并且根据SRS配置信息发送SRS。
第二种情况可以理解为,无论SRS配置信息中指示的SRS资源类型为哪种,终端设备不会根据发来SRS配置信息的切换命令来确定SRS配置激活、或者确定在对应的资源进行传输;而是通过在切换命令之后的其他信令来确定网络侧激活SRS配置、或者网络侧指示终端设备基于SRS配置信息发送SRS、或者终端设备确定网络侧在对应的资源处进行监听。即在切换命令之后,网络侧(可以为第一网络设备)通过专用RRC、MAC CE、DCI中之一通知终端设备激活SRS配置或者触发在配置的SRS资源位置发送SRS。
具体来说,可以是通过专用RRC、MAC CE或DCI中之一,向终端设备发送激活SRS配置的信息,基于该信息终端设备确定在SRS配置信息所对应的SRS资源位置处发送SRS;还可以是通过专用RRC、MAC CE或DCI中之一,向终端设备发送触发信息,以使得终端设备基于SRS配置信息确定在SRS资源位置处发送SRS。
本步骤中,终端设备基于SRS配置信息发送SRS。
具体可以为以下至少之一:
基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
即终端设备可以基于确定的SRS发送资源、以及SRS发送的定时参考点和/或SRS发送使用的TA,来发送SRS。
也就是终端设备可以基于TA为0、第一网络设备的TA、特定的TA中之一发送SRS。
其中,特定的TA可以为预定义的TA、也可以为预先配置的TA。
8、第二网络设备基于SRS配置信息,对SRS进行检测;基于检测到的SRS确定目标TA。
举例来说,例如,若终端设备根据SRS配置信息确定SRS发送的时间参考为:基于第二网络设备的下行定时同步和UL TA=0,则终端设备以第二网络设备的下行定时同步(下行slot/帧边界)为定时参考点,基于TA=0发送SRS。相应的,第二网络设备收到SRS后,根据收到的SRS时间点和第二网络设备下行slot/sub frame边界的差,确定目标TA。
又例如,若确定SRS发送的时间参考为:第二网络设备的下行定时同步和UL TA=终端设备与源小区的UL TA,则终端设备以目标小区的下行slot/帧边界为定时参考点,基于终端设备与源小区的上行TA发送SRS。相应的,第二网络设备收到的SRS时间点为基于原TA调整过的时间。则第二网络设备根据接收SRS的时间点和第二网络设备下行slot/sub frame边界的差,确定目标TA与源TA的相对差或目标TA(即还要根据源TA进一步计算,算出最终的TA绝对值,该值中不包括源TA的影响)。可选的,第二网络设备通过第一网络设备获取源TA。
其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
9、终端设备接收第一网络设备或第二网络设备发送的目标TA。
也就是说,网络侧将最终的TA或TA差值通知给终端设备。
其中,关于第一网络设备或第二网络设备向终端设备发送的目标TA为TA绝对值、还是TA差值可以预先通过指示信息通知给终端设备;或者,也可以为终端设备根据预定义规则确定接收到的目标TA用TA绝对值表示还是用TA差值表示。该预定义规则可以为在第一网络设备、第二网络设备以及终端设备均预先进行相同的规则设置。
第一网络设备或第二网络设备可以通过专用信息将目标TA通知给终端设备;
其中,所述专用信息可以为如RRC消息或MAC CE或者DCI。
还需要指出的是,携带目标TA的专用信息为发送时间晚于切换命令的信息。
举例来说,第二网络设备可以在确定目标TA之后,通过专用信息直接将目标TA发送给终端设备;
或者,还可以为第二网络设备将目标TA发送给第一网络设备,由第一网络设备通过专用信息将目标TA发送给终端设备。
然后终端设备与第二网络设备进行数据传输,释放第一网络设备的连接,完成切换。
通过上述示例提供的方案,完善了切换流程,给出了一种利用SRS获取目标TA的方法,减少了目标TA获取的时延。
示例二、与示例一不同之处在于,本示例由第二网络设备生成SRS配置信息,进而由第二网络设备将SRS配置信息发送至第一网络设备,第一网络设备将SRS配置信息通过切换命令发送至中设备。
结合图8对本示例进行说明:
首先终端设备与网络交互用户数据,第一网络设备以及第二网络设备(也就是终端设备的源基站以及目标基站)获取核心网(AMF)提供的移动控制信息。
1、终端设备接收第一网络设备发送的测量控制信息以及基于测量控制信息进行测量,向第一网络设备发送测量上报;
2、由第一网络设备进行切换决策,此时可以基于测量上报确定目标基站,也就是确定第二网络设备;这里需要指出的是,可能会存在多个目标基站,也就是基于测量上报可能为终端设备选取出来多个第二网络设备,本实施例中的第二网络设备可以理解为多个第二网络设备中的一个。当然,也可能仅选取出来一个目标基站,即一个第二网络设备,实际处理中采用哪种处理方式,本实施例不做限定。
3-4、第一网络设备向第二网络设备发送切换请求,第二网络设备进行管理控制;这个步骤与示例一不同在于,本步骤中不在切换请求中携带SRS配置信息。另外,第二网络设备进行管理控制的过程中,或者完成后,第二网络设备可以生成SRS配置信息。
5、第二网络设备向第一网络设备指示SRS配置信息。
可选的,通过切换请求确认消息向第一网络设备指示SRS配置信息;
或者,通过专用消息向第一网络设备指示SRS配置信息。
进一步地,第二网络设备还可以执行:
向第一网络设备指示SRS配置信息之后的第三时长后,基于所述SRS配置信息进行SRS检测;
或者,收到第一网络设备发送的激活指示后的第三时长后,基于所述SRS配置信息进行SRS检测。
也就是说,所述第二网络设备,在向第一网络设备发送所述SRS配置信息的第三时长后或者收到来自第一网络设备的激活指示的第三时长后(第三时长>=0),对相关的资源位置进行SRS检测。
6、第一网络设备向终端设备发送切换命令,所述SRS配置信息,由切换命令携带。
本示例中的剩余步骤与示例一的步骤7-9相同,这里不再赘述。
示例三、本示例与示例一、二不同在于,发送SRS配置信息的时机不同,并且终端设备确定发送SRS的方式也有所不同,进行目标TA发送的方式也存在不同,具体的,结合图9对本示例进行说明:
首先终端设备与网络交互用户数据,第一网络设备以及第二网络设备(也就是终端设备的源基站以及目标基站)获取核心网(AMF)提供的移动控制信息。
1、第一网络设备通过专用RRC消息向终端设备发送SRS配置信息。
其中,所述专用RRC消息可以为:早于切换命令发送时间的专用RRC消息、和/或、为测量配置信息。
也就是说,专用RRC消息可以为测量配置信息、并且为RRC消息,此时其发送时间早于切换命令;或者可以理解为,专用RRC消息为早于切换命令的任意一种消息。
本步骤中,可以通过测量配置信息中携带SRS配置信息;然后终端设备可以根据测量配置信息进行测量,并进行测量上报。
2-3、终端设备进行测量上报之后,可以进行SRS发送。第一网络设备可以根据终端设备的测量上报进行切换决策,关于切换决策的处理与前述相同,不再进行赘述。
4、第一网络设备向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。
其中,所述SRS配置信息,用于第二网络设备获取目标TA;
所述SRS监听触发信息用于指示第二网络设备开始检测所述SRS资源的时刻、或者,用于可以用于指示第二网络设备开始监听。
其中,指示第二网络设备可以监听可以理解为,第一网络设备向第二网络设备发送SRS监听触发信息的时候,第二网络设备就开始进行SRS监听;当然,还可以为第二网络设备在接收到SRS监听触发信息之后的一段时长再开始进行SRS监听。
相应的,第二网络设备当仅接收到第一网络设备发来的SRS配置信息、未接收到SRS监听触发信息时,在接收到SRS配置信息的第四时长之后,检测SRS、或者确定SRS激活。也就是说,若仅指示SRS配置信息,未指示SRS监听触发信息,第二网络设备认为收到SRS配置的一段时长(也就是第四时长>=0)后,开始检测SRS或认为SRS激活。
可选的,第一网络设备指示第二网络设备所述SRS配置信息,和/或,SRS监听触发信息的时间可以相同或不同,使用的信令可以相同或不同。其中,第一网络设备向第二网络设备指示SRS配置信息,可以由切换请求携带。另外,SRS监听触发信息也可以由切换请求携带,当然还可以为其他专用信息携带,这里不再限定。
可选的,所述第一网络设备向第二网络设备指示SRS配置信息,和/或SRS监听触发信息,包括:
第一网络设备接收到终端设备测量上报、或通过专用RRC发送信息之后的第二时长后,向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。
也就是说,第一网络设备在通过专用RRC发送信息之后(比如发送测量配置之后)、或者在第一网络设备收到终端设备的测量上报(MR)、或者在第一网络设备收到终端设备的SRS开始发送的专用指示信息之后之一的一段时间(比如第二时长可以为大于等于0的时长)后,向第二网络设备指示所述SRS配置信息,和/或,SRS监听触发信息。
可以理解为,第一网络设备可以在接收到一定的信息之后认为终端设备可以发送SRS或者,可以认为终端设备已经接收到SRS配置信息的情况下,可以向第二网络设备指示SRS配置信息和/或SRS监听触发信息。又或者,第一网络设备可以在确定终端设备已经开始发送SRS的时候,向第二网络设备发送SRS配置信息和/或SRS监听触发信息。
相应的,第二网络设备在收到第一网络设备发送的SRS配置信息,和/或SRS监听 触发信息后,开始监听SRS。
进一步地,还需要说明的是,前述步骤2中可以为终端设备在满足第一条件时,确定SRS配置激活、或者确定在所述SRS配置信息所对应的资源上发送SRS。
其中,所述第一条件可以为以下至少之一:
接收到专用RRC消息之后的第一时长;
接收到测量配置消息之后的第一时长;
满足测量上报条件之后的第一时长;
发送测量上报信息之后的第一时长;
接收到第一网络设备发送的指示激活所述SRS配置之后的第一时长;
指示网络SRS开始发送的第一时长。
其中,第一时长可以根据实际情况进行设置,比如可以为0.08秒等等,这里不做限定。第一时长可以是指示的,预配置的,自行选择的。
其中,指示网络SRS开始发送的指示信息,或者,指示激活所述SRS配置的指示信息可以通过RRC信令、MAC CE、DCI中之一发送。
还需要指出的是,指示网络SRS开始发送的指示信息,可以为:向第一网络设备发送SRS开始发送的指示信息,和/或,向第二网络设备发送SRS开始发送的指示信息。
当满足第一条件后,终端设备在所述SRS资源位置上发送SRS。具体的可以包括以下至少之一:
基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
例如,若确定SRS发送的时间参考为:基于第二网络设备的下行定时同步和UL TA=0,则UE以第二网络设备的下行定时同步(下行slot/帧边界)为参考点,基于TA=0发送SRS。第二网络设备收到SRS后,根据收到的SRS时间点和第二网络设备下行slot/sub frame边界的差,确定目标TA。
又例如,若确定SRS发送的时间参考为:第二网络设备的下行定时同步和UL TA=UE与源小区的UL TA,则UE以目标小区的下行slot/帧边界为参考点,基于UE与源小区的上行定时提前量发送SRS。相应的,第二网络设备收到的SRS时间点为基于原TA调整过的时间。第二网络设备根据接收SRS的时间点和第二网络设备下行slot/sub frame边界的差,确定目标TA与源TA的相对差或目标TA(即第二网络设备还要根据原TA进一步计算,算出最终的目标TA绝对值,该值中不包括源TA的影响)。源TA也可通过第一网络设备发给第二网络设备。
5、第二网络设备在配置的资源位置,接收并检测SRS,基于SRS获取目标TA。所述目标TA与前述示例相同,这里不再赘述。
6-7、将目标TA发送至终端设备。
同样的,网络侧将最终的目标TA(绝对值)还是TA差值通知给UE,可以是基站指示给UE的,也可是预定义的。与示例一、二相同,不再赘述。
与示例一、二不同之处在于,本示例中,
第二网络设备在切换请求确认消息中,将目标TA通知给第一网络设备;
然后第一网络设备在切换命令携带目标TA,终端设备接收第一网络设备在切换命令中携带的目标TA。
或者,第二网络设备也可以通过非切换命令的其他专用RRC消息将目标TA发给终端设备。
终端设备基于目标TA,进行后续传输。
本示例中,还需要指出的是,SRS配置信息可以如本示例步骤1中描述的由第一网络设备生成并发送给第二网络设备。还可以为,第二网络设备生成,然后将SRS配置信息由第二网络设备发送给第一网络设备;此时,可以对应的场景为,终端设备可以具备多个目标基站,也就是可以有多个可能的第二网络设备,这些第二网络设备可以为第一网络设备相邻小区的网络设备。
基于前述多个示例,再提供另外一种确定目标TA的处理方式,这种方式中,由第一网络设备先预估一个目标TA;第一网络设备将预估的目标TA发送给终端设备;其中,发送目标TA可以由专用信令发送也可以携带在切换命令中发送;举例来说,在示例一、二中,可以跟SRS配置信息一起发送,也就是在切换命令中携带有SRS配置信息以及预估的目标TA;在示例三中,也可以跟SRS配置信息一起发送,即由专用信息携带SRS配置信息以及预估的目标TA。
终端设备基于SRS配置信息以及预估的目标TA发送SRS;
第二网络设备根据SRS确定更新后的目标TA,将更新后的目标TA发送给终端设备;这里,可以由第二网络设备直接将更新的目标TA发送给终端设备;也可以由第二网络设备将更新的目标TA发送给第一网络设备,由第一网络设备将更新的目标TA透传给终端设备;比如,基于示例一、二,可以在切换命令之后的一个专用消息(比如RRC、MAC CE、DCI中之一)中将目标TA发送给终端设备;基于示例三,则可以在切换命令或其他RRC专用消息中将更新的目标TA发送给中设备。
最后需要指出的是,本实施例中多个示例提出了如何基于SRS来确定终端设备以及第二网络设备(也就是目标基站)之间的TA的方案;实际上,本实施例的方案SRS可以为其他参考信号或者信道,比如,可以有DMRS、新的RS(比如,可用于获取TA的参考信号)等等,相应的,SRS配置信息可以理解为其他参考信号的配置信息、或者信道的配置信息,比如可以为DMRS的配置信息、或者新的RS的配置信息。
可见,通过采用上述方案,就能够将SRS配置信息发送至终端设备,由终端设备根据配置进行SRS发送,最终得到第二网络设备确定的目标TA。如此,就能够对切换流程进一步完善,增加了基于SRS确定目标TA的处理,减少了系统中确定目标TA的时间,从而提升了系统的处理效率。
本发明实施例提供了一种终端设备,如图10所示,包括:
第一通信单元51,接收第一网络设备发送的SRS配置信息;其中,所述SRS配置信息,用于使得第二网络设备获取目标时间提前TA;所述SRS配置信息中包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;基于SRS配置信息发送SRS;接收第一网络设备或第二网络设备发送的目标TA。
本发明实施例还提供了一种第一网络设备,如图11所示,包括:
第二通信单元61,向终端设备指示信道探测参考信号SRS配置信息;其中,SRS配置信息,用于使得第二网络设备获取目标TA;SRS配置信息包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;接收第二网络设备发来的目标TA;向终端设备发送所述目标TA。
本发明实施例还提供了一种第二网络设备,如图12所示,包括:
第三处理单元71,基于信道探测参考信号SRS配置信息,对SRS进行检测;其中,SRS配置信息,用于使得所述第二网络设备获取目标时间提前TA;包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;基于检测到的SRS获取目标TA;
第三通信单元72,向第一网络设备或终端设备发送所述目标TA。
本发明实施例中第一网络设备可以为终端设备的源基站,第二网络设备可以为终端 设备的目标基站。
本实施例中,所述SRS资源类型包括以下之一:
非周期类型、半持续类型、周期类型。
所述SRS发送的时间参考为以下至少之一:
基于第一网络设备的上行TA;
基于上行TA为0;
基于特定TA;
基于第一网络设备的下行同步;
基于第二网络设备的下行同步。
基于前述对切换的描述,结合以下多个示例对本实施例提供的方案进行详细说明:
示例一、
SRS配置信息在切换命令中下发,且SRS配置信息来自于第一网络设备;终端设备在收到切换命令时认为SRS配置激活、或确定在SRS配置信息所对应资源处发送SRS。
本示例详细说明如下:
首先终端设备的第一通信单元51与网络交互用户数据,第一网络设备以及第二网络设备(也就是终端设备的源基站以及目标基站)获取核心网(AMF)提供的移动控制信息。
终端设备的第一通信单元51接收第一网络设备的第二通信单元61发送的测量控制信息以及基于测量控制信息进行测量,以通过终端设备的第一通信单元51向第一网络设备发送测量上报;
第一网络设备还包括:第二处理单元62,进行切换决策,此时可以基于测量上报确定目标基站,也就是确定第二网络设备;这里需要指出的是,可能会存在多个目标基站,也就是基于测量上报可能为终端设备选取出来多个第二网络设备,本实施例中的第二网络设备可以理解为多个第二网络设备中的一个。当然,也可能仅选取出来一个目标基站,即一个第二网络设备,实际处理中采用哪种处理方式,本实施例不做限定。
第一网络设备的第二通信单元61向第二网络设备指示SRS配置信息。
第一网络设备的第二通信单元61可以通过切换请求消息或者第一信令,向第二网络设备指示所述SRS配置信息和/或SRS监听触发信息。其中,第一信令可以理解为一种新的信令。
其中,所述SRS监听触发信息可以用于指示第二网络设备开始检测SRS的时刻;或者,可以为基于接收到SRS监听触发信息的时刻触发第二网络设备开始检测SRS。
进一步的,所述SRS监听触发信息还可以包括:
SRS检测的持续时长duration和/或检测截止的时间;
或者,所述SRS监听触发信息还可以包括:SRS配置失效的时间。
第二网络设备的第三处理单元71可以基于接收到的切换请求以及SRS配置信息进行管理控制。
或者,还可以为:第二网络设备的第三处理单元71在接收到SRS监听触发信息之后的一段时长之后,确定触发开始检测SRS;比如,可以为0.1秒等等,可以预定义,网络设备自行确定,交互指示,这里不做穷举。
第一网络设备的第二通信单元61向终端设备发送切换命令,所述SRS配置信息,由切换命令携带;也就是,由第一网络设备生成SRS配置信息,然后第一网络设备通过切换命令向终端设备发送SRS配置信息。
终端设备的第一通信单元51接收切换命令,基于所述切换命令中携带的SRS配置信息发送SRS。
具体可以为:终端设备的第一通信单元51接收来自第一网络设备的切换命令消息,利用其中携带的所述SRS配置信息,在对应的资源位置上发送SRS,该SRS用于第二网络设备获取目标TA。
具体的基于所述切换命令中携带的SRS配置信息发送SRS,可以包括以下之一:
第一种情况、的第一通信单元51若所述SRS配置信息中包含的SRS资源类型为非周期或半持续类型,在接收到携带有SRS配置信息的切换命令时,终端设备确定所述SRS配置信息所对应的SRS资源激活,基于所述SRS配置信息发送SRS。即若在所述SRS配置信息中,配置的SRS资源类型为非周期(aperiodic)或半持续(semi-persistent)类型,则终端设备基于接收到的携带有SRS配置信息的切换命令,确认对应的SRS资源激活,终端设备使用对应的资源发送SRS。
第二种情况、的第一通信单元51接收通过专用RRC、MAC CE、DCI中之一发送的激活SRS配置或触发,在SRS配置信息所对应的SRS资源位置处发送SRS。
具体来说,可以是通过专用RRC、MAC CE或DCI中之一,向终端设备发送激活SRS配置的信息,基于该信息终端设备确定在SRS配置信息所对应的SRS资源位置处发送SRS;还可以是通过专用RRC、MAC CE或DCI中之一,向终端设备发送触发信息,以使得终端设备基于SRS配置信息确定在SRS资源位置处发送SRS。
终端设备还可以包括:第一处理单元52,执行以下至少之一:
基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
也就是终端设备的第一通信单元51,可以基于TA为0、第一网络设备的TA、特定的TA中之一发送SRS。
其中,特定的TA可以为预定义的TA、也可以为预先配置的TA。
第二网络设备的第三处理单元71,基于SRS配置信息,对SRS进行检测;基于检测到的SRS确定目标TA。
其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
终端设备的第一通信单元51,接收第一网络设备或第二网络设备发送的目标TA。
也就是说,网络侧将最终的TA或TA差值通知给终端设备。
其中,关于第一网络设备或第二网络设备向终端设备发送的目标TA为TA绝对值、还是TA差值可以预先通过指示信息通知给终端设备;或者,也可以为终端设备根据预定义规则确定接收到的目标TA用TA绝对值表示还是用TA差值表示。该预定义规则可以为在第一网络设备、第二网络设备以及终端设备均预先进行相同的规则设置。
第一网络设备的第二通信单元61或第二网络设备的第三通信单元72可以通过专用信息将目标TA通知给终端设备;
其中,所述专用信息可以为如RRC消息或MAC CE或者DCI。
还需要指出的是,携带目标TA的专用信息为发送时间晚于切换命令的信息。
然后终端设备与第二网络设备进行数据传输,释放第一网络设备的连接,完成切换。
可选的,第二网络设备的第三通信单元72还可以指示第一网络设备SRS监听开始,也就是当第二网络设备开始进行SRS监听的时候,可以生成该指示,进而可以在切换请求确认消息中向第一网络设备发送该指示,或者也可以在其他专用信息中发送该指示。
通过上述示例提供的方案,完善了切换流程,给出了一种利用SRS获取目标TA的方法,减少了目标TA获取的时延。
示例二、与示例一不同之处在于,本示例由第二网络设备生成SRS配置信息,进而由第二网络设备将SRS配置信息发送至第一网络设备,第一网络设备将SRS配置信息通过切换命令发送至中设备。
第二网络设备通过第三通信单元72向第一网络设备指示SRS配置信息。
可选的,通过切换请求确认消息向第一网络设备指示SRS配置信息;
或者,通过专用消息向第一网络设备指示SRS配置信息。
进一步地,第二网络设备的第三处理单元71还可以执行:
向第一网络设备指示SRS配置信息之后的第三时长后,基于所述SRS配置信息进行SRS检测;
或者,收到第一网络设备发送的激活指示后的第三时长后,基于所述SRS配置信息进行SRS检测。
第一网络设备的第二通信单元61向终端设备发送切换命令,所述SRS配置信息,由切换命令携带。
本示例中的剩余处于与示例一相同,这里不再赘述。
示例三、本示例与示例一、二不同在于,发送SRS配置信息的时机不同,并且终端设备确定发送SRS的方式也有所不同,进行目标TA发送的方式也存在不同。
第一网络设备的第二通信单元61通过专用RRC消息向终端设备发送SRS配置信息。
其中,所述专用RRC消息可以为:早于切换命令发送时间的专用RRC消息、和/或、为测量配置信息。
也就是说,专用RRC消息可以为测量配置信息、并且为RRC消息,此时其发送时间早于切换命令;或者可以理解为,专用RRC消息为早于切换命令的任意一种消息。
本步骤中,可以通过测量配置信息中携带SRS配置信息;然后终端设备可以根据测量配置信息进行测量,并进行测量上报。
终端设备的第一通信单元51进行测量上报之后,可以进行SRS发送。
第一网络设备的第二通信单元61向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。
其中,所述SRS配置信息,用于第二网络设备获取目标TA;
所述SRS监听触发信息用于指示第二网络设备开始检测所述SRS资源的时刻、或者,用于可以用于指示第二网络设备开始监听。
可选的,所述第一网络设备的第二通信单元61接收到终端设备测量上报、或通过专用RRC发送信息之后的第二时长后,向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。相应的,第二网络设备的第三处理单元71在收到第一网络设备发送的SRS配置信息,和/或SRS监听触发信息后,开始监听SRS。
终端设备的第一处理单元52,在满足第一条件时,确定SRS配置激活、或者确定在所述SRS配置信息所对应的资源上发送SRS。
其中,所述第一条件可以为以下至少之一:
接收到专用RRC消息之后的第一时长;
接收到测量配置消息之后的第一时长;
满足测量上报条件之后的第一时长;
发送测量上报信息之后的第一时长;
接收到第一网络设备发送的指示激活所述SRS配置之后的第一时长;
指示网络SRS开始发送的第一时长。
其中,第一时长可以根据实际情况进行设置,比如可以为0.08秒等等,这里不做限定。第一时长可以是指示的,预配置的,自行选择的。
其中,指示网络SRS开始发送的指示信息,或者,指示激活所述SRS配置的指示信息可以通过RRC信令、MAC CE、DCI中之一发送。
还需要指出的是,指示网络SRS开始发送的指示信息,可以为:向第一网络设备发送SRS开始发送的指示信息,和/或,向第二网络设备发送SRS开始发送的指示信息。
当满足第一条件后,终端设备在所述SRS资源位置上发送SRS。具体的第一处理单元52可以执行以下至少之一:
基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
第二网络设备的第三处理单元71在配置的资源位置,接收并检测SRS,基于SRS获取目标TA。所述目标TA与前述示例相同,这里不再赘述。
第二网络设备的第三通信单元72将目标TA发送至终端设备。
本示例中,
第二网络设备的第三通信单元72在切换请求确认消息中,将目标TA通知给第一网络设备;
然后第一网络设备的第二通信单元71在切换命令携带目标TA,终端设备接收第一网络设备在切换命令中携带的目标TA。
或者,第二网络设备的第三通信单元72也可以通过非切换命令的其他专用RRC消息将目标TA发给终端设备。
终端设备基于目标TA,进行后续传输。
基于前述多个示例,再提供另外一种确定目标TA的处理方式,这种方式中,由第一网络设备的第二处理单元先预估一个目标TA;第一网络设备的第二通信单元将预估的目标TA发送给终端设备;其中,发送目标TA可以由专用信令发送也可以携带在切换命令中发送;举例来说,在示例一、二中,可以跟SRS配置信息一起发送,也就是在切换命令中携带有SRS配置信息以及预估的目标TA;在示例三中,也可以跟SRS配置信息一起发送,即由专用信息携带SRS配置信息以及预估的目标TA。
终端设备的第一通信单元基于SRS配置信息以及预估的目标TA发送SRS;
第二网络设备的第三通信单元根据SRS确定更新后的目标TA,将更新后的目标TA发送给终端设备。
最后需要指出的是,本实施例中多个示例提出了如何基于SRS来确定终端设备以及第二网络设备(也就是目标基站)之间的TA的方案;实际上,本实施例的方案SRS可以为其他参考信号或者信道,比如,可以有DMRS、新的RS(比如,可用于获取TA的参考信号)等等,相应的,SRS配置信息可以理解为其他参考信号的配置信息、或者信道的配置信息,比如可以为DMRS的配置信息、或者新的RS的配置信息。
本实施例中终端设备以及第一网络设备、第二网络设备的其他功能与前述方法流程中详细描述的处理相同,这里不再赘述。
可见,通过采用上述方案,就能够将SRS配置信息发送至终端设备,由终端设备根据配置进行SRS发送,最终得到第二网络设备确定的目标TA。如此,就能够对切换流程进一步完善,增加了基于SRS确定目标TA的处理,减少了系统中确定目标TA的时间,从而提升了系统的处理效率。
图13是本发明实施例提供的一种通信设备1900示意性结构图,本实施例中的通信设备可以具体为前述实施例中的网络设备。图13所示的通信设备1900包括处理器1910,处理器1910可以从存储器中调用并运行计算机程序,以实现本发明实施例中的方法。
可选地,如图13所示,通信设备1900还可以包括存储器1920。其中,处理器1910 可以从存储器1920中调用并运行计算机程序,以实现本发明实施例中的方法。
其中,存储器1920可以是独立于处理器1910的一个单独的器件,也可以集成在处理器1910中。
可选地,如图13所示,通信设备1900还可以包括收发器1930,处理器1910可以控制该收发器1930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1930可以包括发射机和接收机。收发器1930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1900具体可为本发明实施例的网络设备,并且该通信设备1900可以实现本发明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1900具体可为本发明实施例的终端设备、或者网络设备,并且该通信设备1900可以实现本发明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14是本发明实施例的芯片的示意性结构图。图14所示的芯片2000包括处理器2010,处理器2010可以从存储器中调用并运行计算机程序,以实现本发明实施例中的方法。
可选地,如图14所示,芯片2000还可以包括存储器2020。其中,处理器2010可以从存储器2020中调用并运行计算机程序,以实现本发明实施例中的方法。
其中,存储器2020可以是独立于处理器2010的一个单独的器件,也可以集成在处理器2010中。
可选地,该芯片2000还可以包括输入接口2030。其中,处理器2010可以控制该输入接口2030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,该芯片2000还可以包括输出接口2040。其中,处理器2010可以控制该输出接口2040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,该芯片可应用于本发明实施例中的网络设备,并且该芯片可以实现本发明实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
应理解,本发明实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
应理解,本发明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发明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。结合本发明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,本发明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,本发明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,本发明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。
图15是本申请实施例提供的一种通信系统2100的示意性框图。如图15所示,该通信系统2100包括UE2110和网络设备2120。
其中,该UE2110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2120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。
本发明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发明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发明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。
本发明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发明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发明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。
本发明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发明实施例中的网络设备,当该计算机程序在计算机上运行时,使得计算机执行本发明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。
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发明的范围。
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。
在本发明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,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明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)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,)ROM、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明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发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应所述以权利要求的保护范围为准。

Claims (105)

  1. 一种时间提前TA的获取方法,应用于终端设备,包括:
    接收第一网络设备发送的SRS配置信息;其中,所述SRS配置信息,用于使得第二网络设备获取目标时间提前TA;所述SRS配置信息中包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
    基于SRS配置信息发送SRS;
    接收第一网络设备或第二网络设备发送的目标TA。
  2. 根据权利要求1所述的方法,其中,所述SRS资源类型包括以下之一:
    非周期类型、半持续类型、周期类型。
  3. 根据权利要求1所述的方法,其中,所述SRS发送的时间参考为以下至少之一:
    基于第一网络设备的上行TA;
    基于上行TA为0;
    基于特定TA;
    基于第一网络设备的下行同步;
    基于第二网络设备的下行同步。
  4. 根据权利要求1-3任一项所述的方法,其中,所述SRS配置信息,由切换命令携带。
  5. 根据权利要求4所述的方法,其中,所述方法还包括以下之一:
    若所述SRS配置信息中包含的SRS资源类型为非周期或半持续类型,在接收到携带有SRS配置信息的切换命令时,确定所述SRS配置信息所对应的SRS资源激活,基于所述SRS配置信息发送SRS;
    接收通过专用RRC、MAC CE、DCI中之一发送的激活SRS配置或触发在SRS配置信息所对应的SRS资源位置处发送SRS。
  6. 根据权利要求5所述的方法,其中,所述方法还包括以下至少之一:
    基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
    基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
  7. 根据权利要求6所述的方法,其中,所述方法还包括:
    基于TA为0、第一网络设备的TA、特定的TA中之一发送SRS。
  8. 根据权利要求1-3任一项所述的方法,其中,所述SRS配置信息,由专用RRC消息携带。
  9. 根据权利要求8所述的方法,其中,所述专用RRC消息为:早于切换命令的发送时间的专用RRC消息、和/或、为测量配置信息。
  10. 根据权利要求9所述的方法,其中,所述方法还包括:
    在满足第一条件时,确定SRS配置激活、或者确定在所述SRS配置信息所对应的资源上发送SRS;
    其中,所述第一条件包括以下至少之一:
    接收到专用RRC消息之后的第一时长;
    接收到测量配置消息之后的第一时长;
    满足测量上报条件之后的第一时长;
    发送测量上报信息之后的第一时长;
    接收到第一网络设备发送的指示激活所述SRS配置之后的第一时长;
    指示网络SRS开始发送的第一时长。
  11. 根据权利要求10所述的方法,其中,所述方法还包括以下至少之一:
    基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
    基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
  12. 根据权利要求10所述的方法,其中,所述方法还包括:
    基于TA为0、第一网络设备的TA、特定的TA中之一发送SRS。
  13. 根据权利要求10所述的方法,其中,所述方法还包括:
    接收第一网络设备在切换命令中携带的目标TA。
  14. 根据权利要求1-13任一项所述的方法,其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
  15. 根据权利要求14所述的方法,其中,所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
  16. 根据权利要求14所述的方法,其中,所述方法还包括:
    基于指示信息、或者基于预定义规则,确定所述目标TA为TA绝对值或TA差值。
  17. 一种TA的获取方法,应用于第一网络设备,所述方法包括:
    向终端设备指示信道探测参考信号SRS配置信息;其中,SRS配置信息,用于使得第二网络设备获取目标TA;SRS配置信息包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
    接收第二网络设备发来的目标TA;
    向终端设备发送所述目标TA。
  18. 根据权利要求17所述的方法,其中,所述SRS资源类型包括以下之一:
    非周期类型、半持续类型、周期类型。
  19. 根据权利要求17所述的方法,其中,所述SRS发送的时间参考为以下至少之一:
    基于第一网络设备的上行TA;
    基于上行TA为0;
    基于特定TA;
    基于第一网络设备的下行同步;
    基于第二网络设备的下行同步。
  20. 根据权利要求17-19任一项所述的方法,其中,所述SRS配置信息,由切换命令携带。
  21. 根据权利要求20所述的方法,其中,所述方法还包括:
    向第二网络设备指示所述SRS配置信息。
  22. 根据权利要求21所述的方法,其中,所述向第二网络设备指示所述SRS配置信息时,所述方法还包括:
    通过切换请求消息或者第一信令,向第二网络设备指示所述SRS配置信息和/或SRS监听触发信息。
  23. 根据权利要求17-19任一项所述的方法,其中,所述方法还包括:
    接收第二网络设备指示的SRS配置信息。
  24. 根据权利要求23所述的方法,其中,所述接收第二网络设备指示的SRS配置信息,包括:
    接收第二网络设备通过切换请求确认消息指示的SRS配置信息;
    或者,接收第二网络设备通过专用消息指示的SRS配置信息。
  25. 根据权利要求24所述的方法,其中,所述向终端设备指示SRS配置信息,包括:
    通过向终端设备发送的切换命令指示SRS配置信息。
  26. 根据权利要求20-25任一项所述的方法,其中,所述方法还包括:
    通过专用信息,将所述目标TA通知给终端设备。
  27. 根据权利要求26所述的方法,其中,所述专用信息为:RRC消息或MAC CE或DCI。
  28. 根据权利要求17-19任一项所述的方法,其中,所述方法还包括:
    通过专用RRC消息向终端设备发送SRS配置信息。
  29. 根据权利要求28所述的方法,其中,所述专用RRC消息为:早于切换命令的发送时间的专用RRC消息、和/或、为测量配置信息。
  30. 根据权利要求28所述的方法,其中,所述方法还包括:
    向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。
  31. 根据权利要求30所述的方法,其中,所述向第二网络设备指示SRS配置信息,和/或SRS监听触发信息,包括:
    接收到终端设备测量上报、或通过专用RRC发送信息之后的第二时长后,向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。
  32. 根据权利要求28所述的方法,其中,所述向终端设备发送所述目标TA包括:
    在切换命令中携带目标TA发送至终端设备。
  33. 根据权利要求17-32任一项所述的方法,其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
  34. 根据权利要求33所述的方法,其中,所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
  35. 根据权利要求33所述的方法,其中,所述方法还包括:
    基于指示信息、或者基于预定义规则,确定将目标TA绝对值或TA差值发送至终端设备。
  36. 一种时间提前获取方法,应用于第二网络设备,所述方法包括:
    基于信道探测参考信号SRS配置信息,对SRS进行检测;其中,SRS配置信息,用于使得所述第二网络设备获取目标时间提前TA;包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;
    基于检测到的SRS获取目标TA;
    向第一网络设备或终端设备发送所述目标TA。
  37. 根据权利要求36所述的方法,其中,所述SRS资源类型包括以下之一:
    非周期类型、半持续类型、周期类型。
  38. 根据权利要求36所述的方法,其中,所述SRS发送的时间参考为以下至少之一:
    基于第一网络设备的上行TA;
    基于上行TA为0;
    基于特定TA;
    基于第一网络设备的下行同步;
    基于第二网络设备的下行同步。
  39. 根据权利要求36-38任一项所述的方法,其中,所述方法还包括:
    接收第一网络设备发来的SRS配置信息。
  40. 根据权利要求39所述的方法,其中,所述接收第一网络设备发来的SRS配置 信息时,所述方法还包括:
    接收第一网络设备通过切换请求消息或第一信令,发来的SRS配置信息和/或SRS监听触发信息。
  41. 根据权利要求36-38任一项所述的方法,其中,所述方法还包括:
    向第一网络设备指示SRS配置信息。
  42. 根据权利要求41所述的方法,其中,所述向第一网络设备指示SRS配置信息,包括:
    通过切换请求确认消息向第一网络设备指示SRS配置信息;
    或者,通过专用消息向第一网络设备指示SRS配置信息。
  43. 根据权利要求41所述的方法,其中,所述方法还包括:
    向第一网络设备指示SRS配置信息之后的第三时长后,基于所述SRS配置信息进行SRS检测;
    或者,收到第一网络设备发送的激活指示后的第三时长后,基于所述SRS配置信息进行SRS检测。
  44. 根据权利要求36-38任一项所述的方法,其中,所述方法还包括:
    接收第一网络设备发来的SRS配置信息和/或SRS监听触发信息;其中,所述SRS监听触发信息用于指示第二网络设备开始检测SRS的时刻。
  45. 根据权利要求44所述的方法,其中,所述方法还包括:
    当仅接收到第一网络设备发来的SRS配置信息、未接收到SRS监听触发信息时,在接收到SRS配置信息的第四时长之后,检测SRS、或者确定SRS激活。
  46. 根据权利要求44所述的方法,其中,所述SRS配置信息与SRS监听触发信息中所指示的时刻相同或不同;
    承载所述SRS配置信息与承载SRS监听触发信息的信令相同或不同。
  47. 根据权利要求36-46任一项所述的方法,其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
  48. 根据权利要求47所述的方法,其中,所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
  49. 根据权利要求47所述的方法,其中,所述方法还包括:
    基于指示信息、或者基于预定义规则,确定将目标TA绝对值或TA差值发送至终端设备。
  50. 一种终端设备,包括:
    第一通信单元,接收第一网络设备发送的SRS配置信息;其中,所述SRS配置信息,用于使得第二网络设备获取目标时间提前TA;所述SRS配置信息中包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;基于SRS配置信息发送SRS;接收第一网络设备或第二网络设备发送的目标TA。
  51. 根据权利要求50所述的终端设备,其中,所述SRS资源类型包括以下之一:
    非周期类型、半持续类型、周期类型。
  52. 根据权利要求50所述的终端设备,其中,所述SRS发送的时间参考为以下至少之一:
    基于第一网络设备的上行TA;
    基于上行TA为0;
    基于特定TA;
    基于第一网络设备的下行同步;
    基于第二网络设备的下行同步。
  53. 根据权利要求50-52任一项所述的终端设备,其中,所述SRS配置信息,由切换命令携带。
  54. 根据权利要求53所述的终端设备,其中,所述第一通信单元,执行以下之一:
    若所述SRS配置信息中包含的SRS资源类型为非周期或半持续类型,在接收到携带有SRS配置信息的切换命令时,确定所述SRS配置信息所对应的SRS资源激活,基于所述SRS配置信息发送SRS;
    基于专用RRC、MAC CE、DCI中之一发送的激活SRS配置或触发,确定在SRS配置信息所对应的SRS资源位置处发送SRS。
  55. 根据权利要求54所述的终端设备,其中,所述终端设备还包括:
    第一处理单元,执行以下至少之一:
    基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
    基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
  56. 根据权利要求55所述的终端设备,其中,所述第一处理单元,基于TA为0、第一网络设备的TA、特定的TA中之一确定通过第一通信单元发送SRS。
  57. 根据权利要求50-52任一项所述的终端设备,其中,所述SRS配置信息,由专用RRC消息携带。
  58. 根据权利要求57所述的终端设备,其中,所述专用RRC消息为:早于切换命令的发送时间的专用RRC消息、和/或、为测量配置信息。
  59. 根据权利要求58所述的终端设备,其中,所述终端设备还包括:
    第一处理单元,在满足第一条件时,确定SRS配置激活、或者确定在所述SRS配置信息所对应的资源上发送SRS;
    其中,所述第一条件包括以下至少之一:
    接收到专用RRC消息之后的第一时长;
    接收到测量配置消息之后的第一时长;
    满足测量上报条件之后的第一时长;
    发送测量上报信息之后的第一时长;
    接收到第一网络设备发送的指示激活所述SRS配置之后的第一时长;
    指示网络SRS开始发送的第一时长。
  60. 根据权利要求59所述的终端设备,其中,所述第一处理单元执行以下至少之一:
    基于所述SRS配置信息中指示的SRS时频资源位置,确定SRS的发送资源;
    基于预定义的SRS发送的时间参考信息、或者基于所述SRS配置信息中指示的SRS发送的时间参考信息,确定SRS发送的定时参考点和/或SRS发送所使用的定时提前量。
  61. 根据权利要求59所述的终端设备,其中,所述第一处理单元,基于TA为0、第一网络设备的TA、特定的TA中之一确定通过第一通信单元发送SRS。
  62. 根据权利要求59所述的终端设备,其中,所述第一通信单元,接收第一网络设备在切换命令中携带的目标TA。
  63. 根据权利要求50-62任一项所述的终端设备,其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
  64. 根据权利要求63所述的终端设备,其中,所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
  65. 根据权利要求63所述的终端设备,其中,所述终端设备还包括:
    第一处理单元,基于指示信息、或者基于预定义规则,确定所述目标TA为TA绝 对值或TA差值。
  66. 一种第一网络设备,包括:
    第二通信单元,向终端设备指示信道探测参考信号SRS配置信息;其中,SRS配置信息,用于使得第二网络设备获取目标TA;SRS配置信息包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;接收第二网络设备发来的目标TA;向终端设备发送所述目标TA。
  67. 根据权利要求66所述的第一网络设备,其中,所述SRS资源类型包括以下之一:
    非周期类型、半持续类型、周期类型。
  68. 根据权利要求66所述的第一网络设备,其中,所述SRS发送的时间参考为以下至少之一:
    基于第一网络设备的上行TA;
    基于上行TA为0;
    基于特定TA;
    基于第一网络设备的下行同步;
    基于第二网络设备的下行同步。
  69. 根据权利要求66-68任一项所述的第一网络设备,其中,所述SRS配置信息,由切换命令携带。
  70. 根据权利要求69所述的第一网络设备,其中,所述第二通信单元,向第二网络设备指示所述SRS配置信息。
  71. 根据权利要求70所述的第一网络设备,其中,所述第二通信单元,
    通过切换请求消息或者第一信令,向第二网络设备指示所述SRS配置信息和/或SRS监听触发信息。
  72. 根据权利要求66-68任一项所述的第一网络设备,其中,所述第二通信单元,
    接收第二网络设备指示的SRS配置信息。
  73. 根据权利要求72所述的第一网络设备,其中,所述第二通信单元,
    接收第二网络设备通过切换请求确认消息指示的SRS配置信息;
    或者,接收第二网络设备通过专用消息指示的SRS配置信息。
  74. 根据权利要求73所述的第一网络设备,其中,所述第二通信单元,
    通过向终端设备发送的切换命令指示SRS配置信息。
  75. 根据权利要求69-74任一项所述的第一网络设备,其中,所述第二通信单元,
    通过专用信息,将所述目标TA通知给终端设备。
  76. 根据权利要求75所述的第一网络设备,其中,所述专用信息为:RRC消息或MAC CE或DCI。
  77. 根据权利要求66-68任一项所述的第一网络设备,其中,所述第二通信单元,通过专用RRC消息向终端设备发送SRS配置信息。
  78. 根据权利要求77所述的第一网络设备,其中,所述专用RRC消息为:早于切换命令的发送时间的专用RRC消息、和/或、为测量配置信息。
  79. 根据权利要求77所述的第一网络设备,其中,所述第二通信单元,向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。
  80. 根据权利要求79所述的第一网络设备,其中,所述第二通信单元,接收到终端设备测量上报、或通过专用RRC发送信息之后的第二时长后,向第二网络设备指示SRS配置信息,和/或SRS监听触发信息。
  81. 根据权利要求77所述的第一网络设备,其中,所述第二通信单元,在切换命 令中携带目标TA发送至终端设备。
  82. 根据权利要求66-81任一项所述的第一网络设备,其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
  83. 根据权利要求82所述的第一网络设备,其中,所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
  84. 根据权利要求82所述的第一网络设备,其中,所述第二通信单元,基于指示信息、或者基于预定义规则,确定将目标TA绝对值或TA差值发送至终端设备。
  85. 一种第二网络设备,包括:
    第三处理单元,基于信道探测参考信号SRS配置信息,对SRS进行检测;其中,SRS配置信息,用于使得所述第二网络设备获取目标时间提前TA;包括以下至少之一:SRS的时频资源位置、SRS资源类型、SRS发送的时间参考;基于检测到的SRS获取目标TA;
    第三通信单元,向第一网络设备或终端设备发送所述目标TA。
  86. 根据权利要求85所述的第二网络设备,其中,所述SRS资源类型包括以下之一:
    非周期类型、半持续类型、周期类型。
  87. 根据权利要求85所述的第二网络设备,其中,所述SRS发送的时间参考为以下至少之一:
    基于第一网络设备的上行TA;
    基于上行TA为0;
    基于特定TA;
    基于第一网络设备的下行同步;
    基于第二网络设备的下行同步。
  88. 根据权利要求85-87任一项所述的第二网络设备,其中,所述第三通信单元,接收第一网络设备发来的SRS配置信息。
  89. 根据权利要求88所述的第二网络设备,其中,所述第三通信单元,接收第一网络设备通过切换请求消息或第一信令,发来的SRS配置信息和/或SRS监听触发信息。
  90. 根据权利要求85-87任一项所述的第二网络设备,其中,所述第三通信单元,向第一网络设备指示SRS配置信息。
  91. 根据权利要求90所述的第二网络设备,其中,所述第三通信单元,通过切换请求确认消息向第一网络设备指示SRS配置信息;
    或者,通过专用消息向第一网络设备指示SRS配置信息。
  92. 根据权利要求90所述的第二网络设备,其中,所述第三处理单元,
    向第一网络设备指示SRS配置信息之后的第三时长后,基于所述SRS配置信息进行SRS检测;
    或者,收到第一网络设备发送的激活指示后的第三时长后,基于所述SRS配置信息进行SRS检测。
  93. 根据权利要求85-87任一项所述的第二网络设备,其中,所述第三通信单元,接收第一网络设备发来的SRS配置信息和/或SRS监听触发信息。
  94. 根据权利要求93所述的第二网络设备,其中,所述第三处理单元,当仅接收到第一网络设备发来的SRS配置信息、未接收到SRS监听触发信息时,在接收到SRS配置信息的第四时长之后,检测SRS、或者确定SRS激活。
  95. 根据权利要求93所述的第二网络设备,其中,所述SRS配置信息与SRS监听触发信息中所指示的时刻相同或不同;
    承载所述SRS配置信息与承载SRS监听触发信息的信令相同或不同。
  96. 根据权利要求85-95任一项所述的第二网络设备,其中,所述目标TA为:终端设备与第二网络设备的TA绝对值、或者为TA差值。
  97. 根据权利要求96所述的第二网络设备,其中,所述TA差值为:终端设备与第二网络设备的TA绝对值、与终端设备与第一网络设备的TA绝对值之间的差值。
  98. 根据权利要求96所述的第二网络设备,其中,所述第三通信单元,基于指示信息、或者基于预定义规则,确定将目标TA绝对值或TA差值发送至终端设备。
  99. 一种终端设备,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
    其中,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1-16任一项所述方法的步骤。
  100. 一种终端设备,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
    其中,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17-49任一项所述方法的步骤。
  101. 一种芯片,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1-16中任一项所述的方法。
  102. 一种芯片,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17-49中任一项所述的方法。
  103. 一种计算机可读存储介质,所述计算机可读存储介质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1-49任一项所述方法的步骤。
  104. 一种计算机程序产品,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1-49中任一项所述的方法。
  105. 一种计算机程序,所述计算机程序使得计算机执行如权利要求1-49中任一项所述的方法。
PCT/CN2019/094937 2019-07-05 2019-07-05 一种时间提前的获取方法、网络设备、终端设备 WO2021003618A1 (zh)

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