WO2019242417A1 - 一种请求系统消息的方法、装置、存储介质及终端 - Google Patents

一种请求系统消息的方法、装置、存储介质及终端 Download PDF

Info

Publication number
WO2019242417A1
WO2019242417A1 PCT/CN2019/085730 CN2019085730W WO2019242417A1 WO 2019242417 A1 WO2019242417 A1 WO 2019242417A1 CN 2019085730 W CN2019085730 W CN 2019085730W WO 2019242417 A1 WO2019242417 A1 WO 2019242417A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
cell
system message
preamble sequence
rrc configuration
Prior art date
Application number
PCT/CN2019/085730
Other languages
English (en)
French (fr)
Inventor
董霏
艾斯瓦尔·卡利安·瓦图库里
黄河
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US17/254,190 priority Critical patent/US11825365B2/en
Priority to EP19821740.8A priority patent/EP3813434A4/en
Publication of WO2019242417A1 publication Critical patent/WO2019242417A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of mobile communications, and in particular, to a method, device, storage medium, and terminal for requesting system messages.
  • SIs System Information or System Information
  • RB Resource Block
  • the system messages will greatly increase compared to the LTE system. If the broadcast mode of the LTE system is still followed, the public broadcast channel resource overhead and base station power consumption will inevitably be increased. However, some of these system messages are in small demand, so according to such characteristics, the existing NR system introduces SI request procedure (system message request process), and some less commonly used system messages are no longer broadcast periodically, and These system messages are actively requested by the terminal, and when the base station (gNB) receives the request, it issues the requested SI.
  • SI request procedure system message request process
  • SI procedure can be divided into Msg.1 based system message request process (Msg.1 based SI request) and Msg.3 based system message request process (Msg.3 based based SI request), as shown in Figure 1 and Figure 2. Show.
  • the network side maps the preamble (preamble sequence code, that is, Msg.1) and one or more system information through RRC (Radio Resource Control, wireless resource).
  • RRC Radio Resource Control, wireless resource
  • (Control) signaling informs the terminal side.
  • the terminal side requires one or more SIs, it directly sends the corresponding preamble (Msg.1) to notify the base station.
  • the base station After receiving the base station, the base station carries the corresponding RAPID through RAR as the ACK for receiving the preamble.
  • the terminal After receiving the RAR and decoding it correctly to obtain the RAPID conforming to the sent preamble ID, the terminal considers the SI request procedure successful, and then receives the requested SI (s) on the corresponding SI windows and RBs. For the system message request process based on Msg.3, the network side does not correspond to the preamble and SI.
  • the terminal If the terminal requires such SI, the terminal first selects a preamble from the preamble set used for CBRA to initiate RACH (Random Access Channel, random Access channel) process, carrying the required SI information on Msg.3, the base station receives Msg.3, and the MAC (Media Access Control) (PDU) PDU (Protocol Data Unit) As an ACK (response) to notify the terminal, the terminal receives the contention-resolved MAC PDU and correctly decodes to confirm that the contention is successful, then receives the corresponding SI (s) at the corresponding position.
  • RACH Random Access Channel, random Access channel
  • the terminal after joining the SI request procedure, when the terminal is in the RRC_IDLE or RRC_Inactive state, the terminal will perform the SI request procedure at the same time as the measurement behavior. When it is found that the measured results meet the cell reselection, the terminal will execute The cell is switched to the target cell. However, at this time, the terminal is still performing SI request processing to the original cell, which wastes the energy cost of the original cell base station.
  • the present disclosure provides a method, a device, a storage medium, and a terminal for requesting system messages, which are used to solve the following problems of the related technology: the terminal will perform cell reselection in the process of SI request, and the terminal is still reporting to the original cell at this time. Executing the SI procedure, wastes the energy cost of the original cell base station.
  • the present disclosure provides a method for requesting a system message, which includes: when the terminal initiates a system message request process but has not successfully completed the system message request process, the terminal performs cell reselection; and the terminal resets Media access control (MAC) layer or reset related parameters of the RACH process; the terminal obtains the required SI according to the radio resource control RRC configuration of the reselected cell.
  • MAC Media access control
  • the present disclosure also provides a device for requesting a system message, including: a reselection module configured to perform cell reselection of a terminal when the terminal initiates a system message request process but has not successfully completed the system message request process; reset The module is configured to reset the media access control MAC layer or related parameters of the RACH process; the processing module is configured to obtain the required SI according to the radio resource control RRC configuration of the reselected cell.
  • the present disclosure also provides a storage medium storing a computer program, and the computer program is executed by a processor to implement the steps of the method for requesting a system message described above.
  • the present disclosure also provides a terminal including at least a memory and a processor.
  • the memory stores a computer program
  • the processor implements the steps of the method for requesting a system message when the processor executes the computer program on the memory.
  • the terminal of the present disclosure initiates a system message request process
  • the terminal can immediately reset the MAC layer or reset related parameters of the RACH process to terminate the current system message request process, and the cell after the reselection To obtain the required SI again in order to avoid interference to the existing cell and save the energy cost of the base station of the original cell.
  • FIG. 1 is a schematic diagram of the Msg.1 based request process of the related art
  • FIG. 2 is a schematic diagram of the Msg.3 based request process of the related technology
  • FIG. 3 is a flowchart of a method for requesting a system message in the first embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of an apparatus for requesting a system message in a second embodiment of the present disclosure
  • Example 5 is a schematic diagram of a Msg.1 based request process in Example 1 of a fourth embodiment of the present disclosure
  • Example 6 is a schematic diagram of a Msg.1 based SI request process in Example 2 of the fourth embodiment of the present disclosure
  • Example 7 is a schematic diagram of a Msg.3 based SISI request process in Example 1 of the fifth embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of the Msg.3 based SISI request process in Example 2 of the fifth embodiment of the present disclosure.
  • the terminal will perform cell reselection during the process of SI request, and at this time, the terminal is still performing SI request to the original cell, which wastes the energy cost of the original cell base station;
  • this disclosure provides a A method, a device, a storage medium, and a terminal for requesting a system message.
  • the first embodiment of the present disclosure provides a method for requesting a system message.
  • the process of the method is shown in FIG. 3 and includes steps S302 to S306:
  • the terminal resets the MAC layer or resets related parameters of the RACH process.
  • the terminal acquires the required SI according to the radio resource control RRC configuration of the reselected cell.
  • the terminal when a terminal initiates a system message request process, when a cell reselection is triggered, the terminal can immediately reset the MAC layer or reset related parameters of the RACH process to terminate the current system message request process, and after the reselection, To obtain the required SI again in the cell, thereby avoiding interference to the existing cell and saving the energy cost of the base station of the original cell.
  • the terminal When implemented, the terminal performs cell reselection as follows: detecting whether the terminal performs the measurement process; in the case of performing the measurement process, determining whether there are neighboring cells that meet the terminal's cell reselection requirements based on the measurement report; where there are neighboring cells that meet the terminal's cell When reselection is required, the terminal switches to a cell that meets the cell reselection requirements of the terminal.
  • the process may specifically include the following steps:
  • the terminal determines the reselected by the RRC configuration in the main system message block MIB and the system message block SIB1 of the reselected cell.
  • the way of obtaining the SI of the cell; the required SI is obtained according to the way of obtaining the SI.
  • the SI acquisition method includes at least one of the following:
  • the terminal obtains the corresponding SI by monitoring the SI window on the periodic downlink shared channel DL-SCH according to the RRC configuration; (2) The terminal obtains the corresponding SI by triggering the system message request process again according to the RRC configuration.
  • the terminal When the terminal re-triggers the system message request process according to the RRC configuration to obtain the corresponding SI, it can be further subdivided, that is, the terminal sends a pre-configured preamble sequence code that has a mapping relationship with the SI type to request the corresponding preamble sequence code. Or, the random access process is initiated through the preamble sequence code sent by the terminal, and the required SI type information is carried on Msg.3 to obtain the SI corresponding to the SI type.
  • the SI acquisition methods are different, when acquiring the required SI according to the SI acquisition method, different operations in the following three cases are also performed: (1) The SI is to be acquired at the terminal and the SI has been pre-configured. In the case of the leading sequence code ID of the mapping relationship, the MAC layer of the terminal selects the leading sequence code corresponding to the leading sequence code ID of the SI indicated in the RRC configuration, and initiates a system message request process to obtain the SI. (2) In the case that the terminal wants to obtain the SI but the SI is not pre-configured with the preamble sequence ID, the MAC layer of the terminal selects a preamble sequence from the preamble sequence set of the contention-based contention access CBRA, and initiates a system message request. The procedure is to obtain the SI corresponding to the preamble sequence code. (3) When the terminal wants to obtain SI, the terminal monitors the SI window and frequency domain position configured by RRC to obtain SI.
  • the second embodiment of the present disclosure provides a device for requesting a system message.
  • the structure of the device is shown in FIG. 4 and includes:
  • a reselection module 10 is configured to perform cell reselection of the terminal when the terminal initiates a system message request process but has not successfully completed the system message request process;
  • a reset module 20 is coupled to the reselection module 10 and is used to reset media access Relevant parameters for controlling the MAC layer or resetting the RACH process;
  • the processing module 30 is coupled to the resetting module 20 and is configured to obtain the required SI according to the radio resource control RRC configuration of the reselected cell.
  • the above reselection module is specifically used to detect whether the terminal performs the measurement process; in the case of performing the measurement process, according to the measurement report, it is determined whether there are neighboring cells that meet the cell reselection requirements of the terminal; where there are neighboring cells that meet the cell reselection requirements of the terminal At this time, the terminal is switched to a cell that meets the cell reselection requirements of the terminal.
  • the processing module may include: a determining unit, configured to determine an acquisition manner of the SI of the reselected cell through the RRC configuration in the main system message block MIB and the system message block SIB1 of the reselected cell; the acquiring unit, It is coupled with the determining unit, and is configured to obtain a required SI according to an SI acquisition mode.
  • the method for obtaining the SI determined by the determining unit includes at least one of the following: (1) The terminal obtains the corresponding SI by monitoring the SI window on the periodic downlink shared channel DL-SCH according to the RRC configuration; (2) The RRC configuration re-triggers the system message request process to obtain the corresponding SI.
  • the determination unit can re-trigger the system message request process to obtain the corresponding SI through the terminal according to the RRC configuration.
  • the method can be used in any of the following two ways: A. The terminal sends a pre-configured preamble sequence code that has a mapping relationship with the SI type. To request the SI corresponding to the preamble sequence code; B, initiate the random access process through the preamble sequence code sent by the terminal, and carry the required SI type information on Msg.3 to obtain the SI corresponding to the SI type.
  • the acquisition unit is specifically used to perform the following three cases:
  • the MAC layer of the terminal is caused to select a preamble sequence corresponding to the preamble sequence ID of the SI indicated in the RRC configuration. Code to initiate the system message request process to obtain SI.
  • the MAC layer of the terminal is caused to select a preamble sequence code from the preamble sequence set of the contention-based contention access CBRA to initiate the system
  • the message request process is to obtain the SI corresponding to the preamble sequence code.
  • the terminal When the terminal wants to obtain SI, it monitors the SI window and frequency domain position configured by RRC to obtain SI.
  • the terminal when a terminal initiates a system message request process, when a cell reselection is triggered, the terminal can immediately reset the MAC layer or reset related parameters of the RACH process to terminate the current system message request process, and after the reselection, To obtain the required SI again in the cell, thereby avoiding interference to the existing cell and saving the energy cost of the base station of the original cell.
  • the third embodiment of the present disclosure also provides a storage medium storing a computer program.
  • the computer program is executed by a processor, the following steps S1-S3 are implemented:
  • the terminal when a terminal initiates a system message request process, when a cell reselection is triggered, the terminal can immediately reset the MAC layer or reset related parameters of the RACH process to terminate the current system message request process, and after the reselection, To obtain the required SI again in the cell, thereby avoiding interference to the existing cell and saving the energy cost of the base station of the original cell.
  • the processor Before the above computer program is executed by the processor to complete the cell reselection steps in the SI procedure, the processor also executes the following steps: detecting whether the terminal performs the measurement process; in the case of performing the measurement process, determining whether to perform the measurement according to the measurement report If there are neighboring cells that meet the cell reselection requirements of the terminal, when there are neighboring cells that meet the cell reselection requirements of the terminal, the terminal switches to the neighboring cells.
  • the following process is specifically performed: detecting whether the terminal performs a measurement process; and in the case of performing the measurement process, determining whether there is an adjacent cell that meets the terminal according to the measurement report.
  • Cell reselection requirements when there is an adjacent cell that meets the cell reselection requirements of the terminal, the terminal switches to a cell that meets the cell reselection requirements of the terminal.
  • the RRC configuration in FIG. Determines the SI acquisition method of the reselected cell; and acquires the required SI according to the SI acquisition method.
  • the SI acquisition method includes at least: obtaining the corresponding SI through the terminal listening to the SI window on the periodic downlink shared channel DL-SCH according to the RRC configuration; or obtaining the corresponding SI through the terminal re-triggering the system message request process according to the RRC configuration.
  • the corresponding SI is obtained by the terminal re-triggering the system message request process according to the RRC configuration, including one of the following: the terminal sends a pre-configured preamble sequence code that has a mapping relationship with the SI type to request the SI corresponding to the preamble sequence code ; Initiate the random access process through the preamble sequence code sent by the terminal, and carry the required SI type information on Msg.3 to obtain the SI corresponding to the SI type.
  • the processor executes the steps of acquiring the required SI according to the SI acquisition method, it can also be executed in any of the following situations:
  • the MAC layer of the terminal selects a preamble sequence corresponding to the preamble sequence ID of the SI indicated in the RRC configuration. Code to initiate the system message request process to obtain SI.
  • the MAC layer of the terminal selects a preamble sequence from the preamble sequence set of the contention-based contention access CBRA, and initiates a system message request.
  • the procedure is to obtain the SI corresponding to the preamble sequence code.
  • the terminal monitors the SI window and frequency domain position configured by RRC to obtain SI.
  • the foregoing storage medium may include, but is not limited to, a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, and a magnetic disk.
  • Various media such as discs or optical discs that can store program codes.
  • the processor executes the method steps described in the foregoing embodiment according to the program code stored in the storage medium.
  • modules or steps of the present disclosure may be implemented by a general-purpose computing device, and they may be centralized on a single computing device or distributed on a network composed of multiple computing devices. Above, optionally, they may be implemented with program code executable by a computing device, so that they may be stored in a storage device and executed by the computing device, and in some cases, may be in a different order than here
  • the steps shown or described are performed, or they are separately made into individual integrated circuit modules, or multiple modules or steps in them are made into a single integrated circuit module for implementation. As such, the present disclosure is not limited to any particular combination of hardware and software.
  • 3GPP has decided to introduce a completely new process for requesting system messages. In this way, the resource overhead of system messages and the energy consumption overhead of base stations are saved.
  • the terminal can initiate SI procedures in idle and inactive states, the terminal may still perform cell reselection when initiating this process.
  • This disclosure proposes a corresponding solution for such scenarios to determine that the cell reselection is causing the The terminal behavior of the SIprocedure procedure prevents the terminal from interfering with the target cell and saves the energy cost of the original cell base station.
  • the embodiment of the present disclosure mainly describes a method for resetting a MAC so that if a terminal triggers cell reselection at the same time in a SI procedure, after the cell reproduction ends, the terminal resets the MAC layer to terminate the ongoing process. SI request procedured. This prevents the terminal from interfering with the target cell and saves energy costs of the original cell base station.
  • the terminal initiates a new SI request procedure according to the MIB of the current cell and the RRC signaling configured by SIB1.
  • Step 1 When the terminal resides in a cell and is currently in the RRC_Inactive or RRC_Idle state, learn the method of obtaining the other SI through the RRC configuration in the system message MIB and SIB1 of the current cell; (eg.1: by monitoring the periodic SI window on DL-SCH to obtain the corresponding system information; 2: Request the corresponding SI (s) (Msg.1 based SI request) by actively sending a pre-configured preamble; 3: Send the preamble actively, And carry the required SI (s) information (Msg.3 based on SIrequest) on Msg.3.
  • the terminal needs to obtain Other SI (s), and this SI (s) has been configured with the corresponding preamble index.
  • the RRC requests the MAC layer to initiate Msg.1 based on the current procedure in the resident cell, and the MAC chooses to send a preamble corresponding to the requested system information to the gNB according to the RRC configuration.
  • Step 2 After the terminal sends a preamble request system message, when the RAR sent by the base station (gNB) has not been received, or when the RAR is received but the RAPID carried by the RAR does not meet the preamble ID selected by the MAC. At this time, if the terminal executes the measurement process and finds that the same-frequency or inter-frequency neighboring cells meet the current cell reselection requirements, the terminal will immediately perform cell reselection from the original cell to the target cell.
  • the base station gNB
  • Step 3 When the terminal completes the cell reselection and camps on the new cell, the terminal no longer listens to the original cell CORESET at this time, the original requested SI request is no longer needed by the terminal, and the terminal resets the MAC layer (MAC reset) to Terminate the ongoing Msg1 based SI request process. Then, according to the system message MIB of the new cell and the RRC configuration carried in SIB1, the request mode of other SI is obtained.
  • MAC reset MAC layer
  • Step 4 Assuming that the required SI acquisition method is obtained through the SI request process, the UE re-initiates a new SI request process on the newly camped cell until the required correct system information is obtained in the new cell.
  • Step 1 When the terminal resides in a cell and is currently in the RRC_Inactive or RRC_Idle state, learn the acquisition method of the other SI through the RRC configuration in the system message MIB and SIB1 of the current cell (eg1: by monitoring the periodic DL-SCH To obtain the corresponding system information through SI window.
  • 2 By actively sending a pre-configured preamble to request the corresponding SI (s) (Msg.1 based on SI request).
  • 3 By actively sending the preamble, and in Msg .3 carries the required SI (s) information (Msg. 3 based on SI request).
  • the terminal needs to obtain Other SI (s), and this SI (s) has been configured with the corresponding preamble index.
  • the RRC requests the MAC layer to initiate Msg.1 based on the current procedure in the resident cell, and the MAC chooses to send a preamble corresponding to the requested system information to the gNB according to the RRC configuration.
  • Step 2 After the terminal sends a preamble request system message, when the RAR sent by the base station (gNB) has not been received, or when the RAR is received but the RAPID carried by the RAR does not meet the preamble ID selected by the MAC. At this time, if the terminal executes the measurement process and finds that the same-frequency or inter-frequency neighboring cells meet the current cell reselection requirements, the terminal will immediately perform cell reselection from the original cell to the target cell.
  • the base station gNB
  • Step 3 When the terminal completes the cell reselection and camps on the new cell, the terminal no longer listens to the original cell CORESET at this time, the original requested SI request is no longer needed by the terminal, and the terminal resets the MAC layer (MAC reset) to Terminate the ongoing Msg1 based SI request process. Then, according to the system message MIB of the new cell and the RRC configuration carried in SIB1, the other SI acquisition method is obtained,
  • Step 4 Assuming that the required SI type can be obtained through system message broadcast, the UE receives the required SI type according to the SI window configured by the RRC and the corresponding frequency domain position.
  • the cell reselection is triggered. After the cell reselection, the UE needs to terminate the current SI procedure request by the MAC Reset step, thereby avoiding the The impact of the original community and the current community.
  • 3GPP has decided to introduce a completely new process for requesting system messages. In this way, the resource overhead of system messages and the energy consumption overhead of base stations are saved. However, since the terminal can initiate SI procedure and idle procedure in idle and inactive states, the terminal may still continue to perform cell reselection when initiating this process. This disclosure proposes a corresponding solution for such scenarios to determine that the The terminal behavior of the SIprocedure procedure prevents the terminal from interfering with the target cell and saves the energy cost of the original cell base station.
  • the embodiment of the present disclosure mainly describes a method for resetting a MAC so that if a terminal triggers cell reselection at the same time in a SI procedure, after the cell reproduction ends, the terminal resets the MAC layer to terminate the ongoing process. SI request procedured. This prevents the terminal from interfering with the target cell and saves energy costs of the original cell base station.
  • the terminal initiates a new SI request procedure according to the MIB of the current cell and the RRC signaling configured by SIB1.
  • Step 1 When the terminal resides in a cell and is currently in the RRC_Inactive or RRC_Idle state, learn the acquisition method of the other SI through the RRC configuration in the system message MIB of the current cell and SIB1 (eg1: by monitoring the periodic DL- SI on the SCH to obtain the corresponding system information.
  • 2 Request the corresponding SI (s) (Msg.1 based on SI request) by actively sending a pre-configured preamble.
  • 3 Send the preamble actively, and Msg.3 carries the required SI (s) information (Msg.3 based SI request).
  • Msg.3 carries the required SI (s) information (Msg.3 based SI request).
  • the RRC requests the MAC layer to initiate a Msg.3 based SI request procedure at the current resident cell, and the MAC selects a preamble to send from the preamble set used for CBRA, and starts the Msg.3 based SI request.
  • Step 2 After the terminal sends the preamble, when the contention resolution MAC PDU sent by the base station (gNB) has not been received, or when the contention resolution MAC PDU is received, but the MAC PDU cannot be decoded correctly. At this time, if the terminal finds that the same frequency or inter-frequency neighboring cell meets the requirements of the current cell reselection during the measurement process, the terminal will immediately perform the cell reselection from the current cell to the target cell.
  • the base station gNB
  • Step 3 When the terminal completes the cell reselection and camps on the new cell, the terminal no longer listens to the original cell CORESET at this time, the original requested SI request is no longer needed by the terminal, and the terminal resets the MAC layer (MAC reset) to Terminate the ongoing Msg3 based SI request process. Then, according to the system message MIB of the new cell and the RRC configuration carried in SIB1, the request mode of other SI is obtained.
  • MAC reset MAC layer
  • Step 4 Assuming that the required SI acquisition method is obtained through the SI request process, the UE re-initiates a new SI request procedure on the newly camped cell until the required correct system information is obtained in the new cell.
  • Step 1 When the terminal resides in a cell and is currently in the RRC_Inactive or RRC_Idle state, learn the acquisition method of the other SI through the RRC configuration in the system message MIB and SIB1 of the current cell (eg1: by monitoring the periodic DL- SI on the SCH to obtain the corresponding system information.
  • 2 Request the corresponding SI (s) (Msg.1 based on SI request) by actively sending a pre-configured preamble.
  • 3 Send the preamble actively, and Msg.3 carries the required SI (s) information (Msg.3 based SI request).
  • Msg.3 carries the required SI (s) information (Msg.3 based SI request).
  • the RRC requests the MAC layer to initiate a Msg.3 based SI request procedure at the current resident cell, and the MAC selects a preamble to send from the preamble set used for CBRA, and starts the Msg.3 based SI request.
  • Step 2 After the terminal sends the preamble, when the contention resolution MAC PDU sent by the base station (gNB) has not been received, or when the contention resolution MAC PDU is received, but the MAC PDU cannot be decoded correctly. At this time, if the terminal finds that the same frequency or inter-frequency neighboring cell meets the requirements of the current cell reselection during the measurement process, the terminal will immediately perform the cell reselection from the current cell to the target cell.
  • the base station gNB
  • Step 3 When the terminal completes the cell reselection and camps on the new cell, the terminal no longer listens to the original cell CORESET at this time, the original requested SI request is no longer needed by the terminal, and the terminal resets the MAC layer (MAC reset) to Terminate the ongoing Msg3 based SI request process. Then, according to the system message MIB of the new cell and the RRC configuration carried in SIB1, the request mode of other SI is obtained.
  • MAC reset MAC layer
  • Step 4 Assuming that the required SI type can be obtained through periodic broadcast of the system, the UE receives the required SI type according to the SI window configured by the RRC and the corresponding frequency domain position.
  • the terminal when the terminal is performing a SI request, when the cell reselection is triggered, the terminal can immediately terminate the current SI request procedure, and then use the RRC configuration configured by the MIB and SIB1 of the current cell to avoid The existing cell generates interference and saves power consumption of the base station of the original cell. And because the current UE is in the IDLE and INACTIVE states, resetting the MAC will not have any impact on the UE.
  • the present disclosure is applicable to the field of mobile communication.
  • a terminal initiates a system message request process
  • the terminal can immediately reset the MAC layer or reset related parameters of the RACH process to terminate the current system message request process, and Obtain the required SI again in the reselected cell, thereby avoiding interference to the existing cell and saving the energy cost of the base station of the original cell.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

一种请求系统消息的方法、装置、存储介质及终端，方法包括：在终端发起系统消息请求过程但尚未成功完成系统消息请求过程时，终端进行小区重选；终端重置媒体接入控制MAC层或重置RACH过程的相关参数；终端根据重选后的小区的无线资源控制RRC配置获取所需要的SI。终端在发起系统消息请求过程时，当触发小区重选后，终端可以立即重置MAC层或重置RACH过程的相关参数，来终止当前的系统消息请求过程，并在重选后的小区中再次获取所需要的SI，从而避免对当前小区产生干扰，并节约原小区的基站的能源开销。

Description

一种请求系统消息的方法、装置、存储介质及终端 技术领域
本公开涉及移动通讯领域，特别是涉及一种请求系统消息的方法、装置、存储介质及终端。
背景技术
LTE(Long Term Evolution，长期演进)系统中，所有的SI(System Information,系统信息或系统消息)都是以周期性的方式通过广播的方式通知驻留在小区的所有的终端。其中不同的系统信息可能会以不同的周期进行广播，终端只需要在配置的好的相应的SI windows(窗口)和RB(Resource Block,资源块)内等待接收所需的SI。
对于NR系统(5G网络对应的系统)，系统消息相比LTE系统将大大增加。若是依然按照LTE系统的广播方式，必然会增加公共广播信道资源开销和基站功耗。然而其中某些系统消息被需求量很少，所以根据此类特征，现有的NR系统引入SI request procedure(系统消息请求过程)，将一些不常用的系统消息不再做周期性的广播，而是通过终端主动去请求这些系统消息，当基站侧(gNB)收到请求时，再进行下发所请求的SI。其中SI request procedure可分为基于Msg.1的系统消息请求过程(Msg.1 based SI request)和基于Msg.3的系统消息请求过程(Msg.3 based SI request)，如图1和图2所示。
其中两者的区别在于，对于基于Msg.1的系统消息请求过程，网络侧将preamble(前导序列码，即Msg.1)和一个或多个系统信息对应起来通过RRC(Radio Resource Control，无线资源控制)信令告知终端侧，当终端侧需求一个或多个SI时，直接发送相对应的preamble(Msg.1)告知基站，基站收到后通过RAR携带对应RAPID作为接收preamble的ACK，当终端接收到RAR并正确解码获得RAPID符合所发送的preamble ID，则终端认为SI request procedure成功，然后在相应的SI window和RB上接收所请求的SI(s)。对于基于Msg.3的系统消息请求过程，网络侧并没有将preamble和SI对应起来，终端若需求此类SI，终端首先从用于CBRA的preamble集合中选择一个preamble发起RACH(Random Access Channel，随机接入信道)过程，在Msg.3上携带所需SI的信息，基站收到Msg.3，通过竞争解决的MAC(Media Access Control，介质访问控制层)PDU(Protocol Data Unit，协议数据单元)作为ACK(响应)来通知终端，终端收到竞争解决的MAC PDU并正确解码确认竞争成功，那么在对应的位置上接收相应的SI(s).
从以上分析可见，当加入SI request procedure后，终端在RRC_IDLE或者RRC_Inactive态时，终端会在进行SI request procedure同时也会进行测量行为，当发现所测量的结果符合小区重选时，终端则会执行小区切换，切换至目标小区，然而，此时的终端还在向原小区执行SI request procedure，浪费原有小区基站的能源开销。
发明内容
本公开提供一种请求系统消息的方法、装置、存储介质及终端，用以解决相关技术的如下问题：终端会在进行SI request procedure的过程中发生小区重选，此时的终端还在向原小区执行SI request procedure，浪费原有小区基站的能源开销。
为解决上述技术问题，一方面，本公开提供一种一种请求系统消息的方法，包括：在终端发起系统消息请求过程但尚未成功完成系统消息请求过程时，终端进行小区重选；终端重置媒体接入控制MAC(Media Access Control，媒体介入控制)层或重置RACH过程的相关参数；终端根据重选后的小区的无线资源控制RRC配置获取所需要的SI。
另一方面，本公开还提供一种请求系统消息的装置，包括：重选模块，设置为在终端发起系统消息请求过程但尚未成功完成系统消息请求过程时，进行终端的小区重选；重置模块，设置为重置媒体接入控制MAC层或重置RACH过程的相关参数；处理模块，设置为根据重选后的小区的无线资源控制RRC配置获取所需要的SI。
另一方面，本公开还提供一种存储介质，存储有计算机程序，计算机程序被处理器执行时实现上述的请求系统消息的方法的步骤。
另一方面，本公开还提供一种终端，至少包括存储器、处理器，存储器上存储有计算机程序，处理器在执行存储器上的计算机程序时实现上述的请求系统消息的方法的步骤。
本公开终端在发起系统消息请求过程时，当触发小区重选后，终端可以立即重置MAC层或重置RACH过程的相关参数，来终止当前的系统消息请求过程，并在重选后的小区中再次获取所需要的SI，从而避免对现小区产生干扰和节约原小区的基站的能源开销。
附图说明
图1是相关技术的Msg.1 based SI request过程示意图；
图2是相关技术的Msg.3 based SI request过程示意图；
图3是本公开第一实施例中请求系统消息的方法的流程图；
图4是本公开第二实施例中请求系统消息的装置的结构示意图；
图5是本公开第四实施例实例一中Msg.1 based SI request过程示意图；
图6是本公开第四实施例实例二中Msg.1 based SI request过程示意图；
图7是本公开第五实施例实例一中Msg.3 based SI request过程示意图；
图8是本公开第五实施例实例二中Msg.3 based SI request过程示意图。
具体实施方式
为了解决相关技术的如下问题：终端会在进行SI request procedure的过程中发生小区重选，此时的终端还在向原小区执行SI request procedure，浪费原有小区基站的能源开销；本公开提供了一种请求系统消息的方法、装置、存储介质及终端，以下结合附图以及实施例，对本公开进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本公开，并不限定本公开。
第一实施例
本公开第一实施例提供了一种请求系统消息的方法，该方法的流程如图3所示，包括步骤S302至S306：
S302，在终端发起系统消息请求过程但尚未成功完成系统消息请求过程时，终端进行小区重选；
S304，终端重置MAC层或重置RACH过程的相关参数；
S306，终端根据重选后的小区的无线资源控制RRC配置获取所需要的SI。
本公开实施例终端在发起系统消息请求过程时，当触发小区重选后，终端可以立即重置MAC层或重置RACH过程的相关参数，来终止当前的系统消息请求过程，并在重选后的小区中再次获取所需要的SI，从而避免对现小区产生干扰和节约原小区的基站的能源开销。
实现时，终端进行小区重选过程如下：检测终端是否执行测量过程；在执行测量过程的情况下，根据测量报告确定是否存在邻小区符合终端的小区重选要求；在存在邻小区符合终端的小区重选要求时，终端切换至符合终端的小区重选要求的小区。
在根据重选后的小区的RRC配置获取所需要的SI时，具体可以包括如下过程：终端通过重选后的小区的主系统消息块MIB和系统消息块SIB1中的RRC配置确定重选后的小区的SI的获取方式；根据SI的获取方式获取所需要的SI。其中，SI的获取方式至少包括以下之一：
(1)通过终端根据RRC配置监听周期性的下行共享信道DL-SCH上的SI窗口来获取相应的SI；(2)通过终端根据RRC配置重新触发系统消息请求过程来获取相应的SI。
在通过终端根据RRC配置重新触发系统消息请求过程来获取相应的SI时，还可以进一步细分，即通过终端发送预先配置与SI类型有着映射关系的前导序列码，来请求与前导序列码相对应的SI；或者，通过终端发送的前导序列码发起随机接入过程，且在Msg.3上携带所需求的SI类型的信息，以获取SI类型对应的SI。
由于SI的获取方式不同，因此，在根据SI的获取方式获取所需要的SI时，也会执行如下三种情况的不同操作：(1)在终端要获取SI且该SI已经预先配置了了有映射关系的前导序列码ID的情况下，终端的MAC层选择RRC配置中指示的与SI的前导序列码ID相对应的前导序列码，发起系统消息请求过程以获取SI。(2)在终端要获取SI但SI未被预先配置前导序列码ID的情况下，终端的MAC层从基于冲突的竞争接入CBRA的前导序列码集合中选择一个前导序列码，发起系统消息请求过程以获取前导序列码对应的SI。(3)在终端要获取SI时，终端监听RRC配置的SI窗口和频域位置来获取SI。
第二实施例
本公开第二实施例提供了一种请求系统消息的装置，该装置的结构示意如图4所示，包括：
重选模块10，用于在终端发起系统消息请求过程但尚未成功完成系统消息请求过程时，进行终端的小区重选；重置模块20，与重选模块10耦合，用于重置媒体接入控制MAC层或重置RACH过程的相关参数；处理模块30，与重置模块20耦合，用于根据重选后的小区 的无线资源控制RRC配置获取所需要的SI。
上述重选模块，具体用于检测终端是否执行测量过程；在执行测量过程的情况下，根据测量报告确定是否存在邻小区符合终端的小区重选要求；在存在邻小区符合终端的小区重选要求时，将终端切换至符合终端的小区重选要求的小区。
实现时，上述处理模块可以包括：确定单元，用于通过重选后的小区的主系统消息块MIB和系统消息块SIB1中的RRC配置确定重选后的小区的SI的获取方式；获取单元，与确定单元耦合，用于根据SI的获取方式获取所需要的SI。其中，确定单元确定的SI的获取方式至少包括以下之一：(1)通过终端根据RRC配置监听周期性的下行共享信道DL-SCH上的SI窗口来获取相应的SI；(2)通过终端根据RRC配置重新触发系统消息请求过程来获取相应的SI。
具体实现过程中，确定单元通过终端根据RRC配置重新触发系统消息请求过程来获取相应的SI可以以下两种方式任意之一：A，通过终端发送预先配置与SI类型有着映射关系的前导序列码，来请求与前导序列码相对应的SI；B，通过终端发送的前导序列码发起随机接入过程，且在Msg.3上携带所需求的SI类型的信息，以获取SI类型对应的SI。
由于确定单元确定的SI的获取方式不同，因此，在根据SI的获取方式获取所需要的SI时，获取单元具体用于执行如下三种情况：
(1)在终端要获取SI且该SI已经预先配置了有映射关系的前导序列码ID的情况下，使终端的MAC层选择RRC配置中指示的与SI的前导序列码ID相对应的前导序列码，发起系统消息请求过程以获取SI。
(2)在终端要获取SI但SI未被预先配置前导序列码ID的情况下，使终端的MAC层从基于冲突的竞争接入CBRA的前导序列码集合中选择的一个前导序列码，发起系统消息请求过程以获取前导序列码对应的SI。
(3)在终端要获取SI时，监听RRC配置的SI窗口和频域位置来获取SI。
本公开实施例终端在发起系统消息请求过程时，当触发小区重选后，终端可以立即重置MAC层或重置RACH过程的相关参数，来终止当前的系统消息请求过程，并在重选后的小区中再次获取所需要的SI，从而避免对现小区产生干扰和节约原小区的基站的能源开销。
第三实施例
本公开第三实施例还提供了一种存储介质，存储有计算机程序，上述计算机程序被处理器执行时实现如下步骤S1-S3：
S1，在终端发起系统消息请求过程但尚未成功完成系统消息请求过程时，进行终端的小区重选；
S2，重置媒体接入控制MAC层或重置RACH过程的相关参数；
S3，根据重选后的小区的无线资源控制RRC配置获取所需要的SI。
本公开实施例终端在发起系统消息请求过程时，当触发小区重选后，终端可以立即重置MAC层或重置RACH过程的相关参数，来终止当前的系统消息请求过程，并在重选后的小区中再次获取所需要的SI，从而避免对现小区产生干扰和节约原小区的基站的能源开销。
在上述计算机程序被处理器执行在SI request procedure中已完成小区重选的步骤之前，还被处理器执行如下步骤：检测终端是否执行测量过程；在执行测量过程的情况下，根据测量报告确定是否存在邻小区符合终端的小区重选要求；在存在符合终端的小区重选要求的邻小区时，终端切换至邻小区。
在上述计算机程序被处理器执行进行终端的小区重选的步骤时，具体被执行如下过程：检测终端是否执行测量过程；在执行测量过程的情况下，根据测量报告确定是否存在邻小区符合终端的小区重选要求；在存在邻小区符合终端的小区重选要求时，终端切换至符合终端的小区重选要求的小区。
在上述计算机程序被处理器执行根据重选后的小区的无线资源控制RRC配置获取所需要的SI的步骤时，具体被执行：通过重选后的小区的主系统消息块MIB和系统消息块SIB1中的RRC配置确定重选后的小区的SI的获取方式；根据SI的获取方式获取所需要的SI。其中，SI的获取方式至少包括：通过终端根据RRC配置监听周期性的下行共享信道DL-SCH上的SI窗口来获取相应的SI；或者，通过终端根据RRC配置重新触发系统消息请求过程来获取相应的SI。其中，通过终端根据RRC配置重新触发系统消息请求过程来获取相应的SI，包括以下之一：通过终端发送预先配置与SI类型有着映射关系的前导序列码，来请求与前导序列码相对应的SI；通过终端发送的前导序列码发起随机接入过程，且在Msg.3上携带所需求的SI类型的信息，以获取SI类型对应的SI。
由于SI的获取方式不同，因此，在被处理器执行根据SI的获取方式获取所需要的SI的步骤时，具体还可以被执行如下任意一种情况：
(1)在终端要获取SI且该SI已经预先配置了了有映射关系的前导序列码ID的情况下，终端的MAC层选择RRC配置中指示的与SI的前导序列码ID相对应的前导序列码，发起系统消息请求过程以获取SI。
(2)在终端要获取SI但SI未被预先配置前导序列码ID的情况下，终端的MAC层从基于冲突的竞争接入CBRA的前导序列码集合中选择一个前导序列码，发起系统消息请求过程以获取前导序列码对应的SI。
(3)在终端要获取SI时，终端监听RRC配置的SI窗口和频域位置来获取SI。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行上述实施例记载的方法步骤。可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样，本公开不限制于任何特定的硬件和软件结合。
第四实施例
现有NR中，3GPP确定引入一个全新的过程用于系统消息的请求，通过此类方式来节约系统消息的资源开销和基站的能耗开销。但是由于终端可以在idle和Inactive态发起SI request procedure，在发起此过程时，终端仍有可能继续执行小区重选，本公开就是针对此类场景提出相应的方案来确定因为小区重选导致正在处于SI request procedure的终端行为，避免终端对目标小区产生干扰和节约原有小区基站的能源开销。
具体的，本公开实施例主要描述了一种利用重置MAC的方法使得终端在SI request procedure中若同时触发小区重选时，在小区重现结束后，终端重置MAC层来终止当前正在进行的SI request procedure。从而避免终端对目标小区产生干扰和节约原有小区基站的能源开销。重置MAC层后，终端根据现小区的MIB和SIB1配置的RRC信令来发起新的SI request procedure。
下面结合附图和两个实例进行说明。
实例1
(本实例详细流程图可以参考图5，该图为Msg.1 based SI request)
步骤1，当终端驻留在一个小区，并且当前处于RRC_Inactive或者RRC_Idle态时，通过当前小区的系统消息MIB和SIB1中的RRC configuration获知other SI的获取方式；(eg.1：通过监听周期性的DL-SCH上的SI window来获取相应的系统信息；2：通过主动发送预配置的preamble来请求与之相对应的SI(s)(Msg.1 based SI request)；3:通过主动发送preamble，且在Msg.3上携带所需求的SI(s)信息(Msg.3 based SI request))。当终端有获取Other SI(s)需求时，并且此SI(s)已经配置了相对应的preamble index。则RRC请求MAC层在当前驻留cell发起Msg.1 based SI request procedure，MAC根据RRC配置选择发送与所请求的系统信息所对应的preamble给gNB。
步骤2，在终端发送preamble请求系统消息后，在还未接收到基站(gNB)发送的RAR时，或者接收到RAR但是RAR携带的RAPID不符合MAC选择的preamble ID时。此时若终端执行测量过程时(measurement)发现有同频或者异频邻小区符合当前小区重选的要求时，终端将会立即执行小区重选，从原小区重选至目标小区。
步骤3，当终端完成小区重选，驻留到新小区，终端此时不再监听原小区CORESET，原请求的SI request不再被终端所需要，终端则通过重置MAC层(MAC reset)来终止当前正在进行的的Msg1 based SI request过程。然后根据新小区的系统消息MIB和SIB1中携带的RRC configuration中获得other SI的请求方式。
步骤4，假设所需SI获取方式是通过SI request过程获得，则UE重新在新驻留小区上重新发起新的SI request过程，直到在新小区里获得所需的正确的系统信息。
实例2
(本实例详细流程图可以参考图6，该图为Msg.1 based SI request)
步骤1，终端驻留在一个小区，并且当前处于RRC_Inactive或者RRC_Idle态时，通过 当前小区的系统消息MIB和SIB1中的RRC configuration获知other SI的获取方式(e.g.1：通过监听周期性的DL-SCH上的SI window来获取相应的系统信息。2：通过主动发送预配置的preamble来请求与之相对应的SI(s)(Msg.1 based SI request).3:通过主动发送preamble，且在Msg.3上携带所需求的SI(s)信息(Msg.3 based SI request))。当终端有获取Other SI(s)需求时，并且此SI(s)已经配置了相对应的preamble index。则RRC请求MAC层在当前驻留cell发起Msg.1 based SI request procedure，MAC根据RRC配置选择发送与所请求的系统信息所对应的preamble给gNB。
步骤2，在终端发送preamble请求系统消息后，在还未接收到基站(gNB)发送的RAR时，或者接收到RAR但是RAR携带的RAPID不符合MAC选择的preamble ID时。此时若终端执行测量过程时(measurement)发现有同频或者异频邻小区符合当前小区重选的要求时，终端将会立即执行小区重选，从原小区重选至目标小区。
步骤3，当终端完成小区重选，驻留到新小区，终端此时不再监听原小区CORESET，原请求的SI request不再被终端所需要，终端则通过重置MAC层(MAC reset)来终止当前正在进行的的Msg1 based SI request过程。然后根据新小区的系统消息MIB和SIB1中携带的RRC configuration中获得other SI的获取方式，
步骤4，设所需SI类型是可以通过系统消息广播来获得，则UE根据RRC配置的SI window和相应的频域位置接收所需的SI类型。
本公开上述实例，当终端执行SI request procedure时，在未完成SI request procedure时，触发小区重选，在小区重选后，UE需要通过MAC Reset步骤来终止当前进行的SI request procedure，从而避免对原小区和现小区产生的影响。
第五实施例
现有NR中，3GPP确定引入一个全新的过程用于系统消息的请求，通过此类方式来节约系统消息的资源开销和基站的能耗开销。但是由于终端可以再idle和Inactive态发起SI request procedure，在发起此过程时，终端仍有可能继续执行小区重选，本公开就是针对此类场景提出相应的方案来确定因为小区重选导致正在处于SI request procedure的终端行为，避免终端对目标小区产生干扰和节约原有小区基站的能源开销。
具体的，本公开实施例主要描述了一种利用重置MAC的方法使得终端在SI request procedure中若同时触发小区重选时，在小区重现结束后，终端重置MAC层来终止当前正在进行的SI request procedure。从而避免终端对目标小区产生干扰和节约原有小区基站的能源开销。重置MAC层后，终端根据现小区的MIB和SIB1配置的RRC信令来发起新的SI request procedure。
下面结合附图和两个实例进行说明。
实例1
(本实例详细流程图可以参考图7，该图为Msg.3 based SI request)
步骤1，当终端驻留在一个小区，并且当前处于RRC_Inactive或者RRC_Idle态时，通过当前小区的系统消息MIB和SIB1中的RRC configuration获知other SI的获取方式(e.g.1： 通过监听周期性的DL-SCH上的SI window来获取相应的系统信息。2：通过主动发送预配置的preamble来请求与之相对应的SI(s)(Msg.1 based SI request).3:通过主动发送preamble，且在Msg.3上携带所需求的SI(s)信息(Msg.3 based SI request))。当终端有获取Other SI(s)需求时，并且此SI(s)没有配置相对应的preamble index。则RRC请求MAC层在当前驻留cell发起Msg.3 based SI request procedure，MAC从用于CBRA的preamble集合中选择一个preamble发送，启动Msg.3 based SI request.
步骤2，在终端发送preamble后，在还未接收到基站(gNB)发送的contention resolution的MAC PDU时，或者接收到contention resolution的MAC PDU时但是MAC PDU无法被正确解码时。此时若终端执行测量过程时(measurement)发现有同频或者异频邻小区符合当前小区重选的要求时，终端将会立即执行小区重选，从当前小区重选至目标小区。
步骤3，当终端完成小区重选，驻留到新小区，终端此时不再监听原小区CORESET，原请求的SI request不再被终端所需要，终端则通过重置MAC层(MAC reset)来终止当前正在进行的的Msg3 based SI request过程。然后根据新小区的系统消息MIB和SIB1中携带的RRC configuration中获得other SI的请求方式。
步骤4，假设所需SI获取方式是通过SI request过程获得，则UE重新在新驻留小区上重新发起新的SI request procedure，直到在新小区里获得所需的正确的系统信息。
实例2
(本实例详细流程图可以参考图8，该图为Msg.3 based SI request)
步骤1，当终端驻留在一个小区，并且当前处于RRC_Inactive或者RRC_Idle态时，通过当前小区的系统消息MIB和SIB1中的RRC configuration获知other SI的获取方式(e.g.1：通过监听周期性的DL-SCH上的SI window来获取相应的系统信息。2：通过主动发送预配置的preamble来请求与之相对应的SI(s)(Msg.1 based SI request).3:通过主动发送preamble，且在Msg.3上携带所需求的SI(s)信息(Msg.3 based SI request))。当终端有获取Other SI(s)需求时，并且此SI(s)没有配置了相对应的preamble index。则RRC请求MAC层在当前驻留cell发起Msg.3 based SI request procedure，MAC从用于CBRA的preamble集合中选择一个preamble发送，启动Msg.3 based SI request.
步骤2，在终端发送preamble后，在还未接收到基站(gNB)发送的contention resolution的MAC PDU时，或者接收到contention resolution的MAC PDU时但是MAC PDU无法被正确解码时。此时若终端执行测量过程时(measurement)发现有同频或者异频邻小区符合当前小区重选的要求时，终端将会立即执行小区重选，从当前小区重选至目标小区。
步骤3，当终端完成小区重选，驻留到新小区，终端此时不再监听原小区CORESET，原请求的SI request不再被终端所需要，终端则通过重置MAC层(MAC reset)来终止当前正在进行的的Msg3 based SI request过程。然后根据新小区的系统消息MIB和SIB1中携带的RRC configuration中获得other SI的请求方式。
步骤4，假设所需SI类型是可以通过系统周期性广播来获得，则UE根据RRC配置的SI window和相应的频域位置接收所需的SI类型。
采用本公开上述实例提出的方法，使得终端在进行SI request时，当触发小区重选后，终端可以立即终止当前的SI request procedure，然后通过现小区的MIB和SIB1所配置的RRC configuration从而避免对现小区产生干扰和节约原小区的基站的功耗。并且因为当前UE处在IDLE和INACTIVE态，重置MAC并不会对UE产生任何影响。
尽管为示例目的，已经公开了本公开的优选实施例，本领域的技术人员将意识到各种改进、增加和取代也是可能的，因此，本公开的范围应当不限于上述实施例。
工业实用性
本公开适用于移动通讯领域，终端在发起系统消息请求过程时，当触发小区重选后，终端可以立即重置MAC层或重置RACH过程的相关参数，来终止当前的系统消息请求过程，并在重选后的小区中再次获取所需要的SI，从而避免对现小区产生干扰和节约原小区的基站的能源开销。

Claims (18)

  1. 一种请求系统消息的方法，包括：
    在终端发起系统消息请求过程但尚未成功完成所述系统消息请求过程时，所述终端进行小区重选；
    所述终端重置媒体接入控制MAC层或重置RACH过程的相关参数；
    所述终端根据重选后的小区的无线资源控制RRC配置获取所需要的SI。
  2. 如权利要求1所述的方法，其中，根据重选后的小区的RRC配置获取所需要的SI，包括：
    所述终端通过所述重选后的小区的主系统消息块MIB和系统消息块SIB1中的RRC配置确定所述重选后的小区的SI的获取方式；
    根据所述SI的获取方式获取所述所需要的SI。
  3. 如权利要求2所述的方法，其中，所述SI的获取方式至少包括以下之一：
    通过所述终端根据RRC配置监听周期性的下行共享信道DL-SCH上的SI窗口来获取相应的SI；
    通过所述终端根据RRC配置重新触发系统消息请求过程来获取相应的SI。
  4. 如权利要求3所述的方法，其中，通过所述终端根据RRC配置重新触发系统消息请求过程来获取相应的SI，包括以下之一：
    通过所述终端发送预先配置与SI类型有着映射关系的前导序列码，来请求与所述前导序列码相对应的SI；
    通过所述终端发送的前导序列码发起随机接入过程，且在Msg.3上携带所需求的SI类型的信息，以获取所述SI类型对应的SI。
  5. 如权利要求1至4中任一项所述的方法，其中，根据所述SI的获取方式获取所需要的SI，包括：
    在所述终端要获取SI且该SI已经预先配置了了有映射关系的前导序列码ID的情况下，所述终端的MAC层选择所述RRC配置中指示的与所述SI的前导序列码ID相对应的前导序列码，发起系统消息请求过程以获取所述SI。
  6. 如权利要求1至4中任一项所述的方法，其中，根据所述SI的获取方式获取所需要的SI，包括：
    在所述终端要获取SI但所述SI未被预先配置前导序列码ID的情况下，所述终端的MAC层从基于冲突的竞争接入CBRA的前导序列码集合中选择一个前导序列码，发起系统消息请求过程以获取所述前导序列码对应的SI。
  7. 如权利要求1至4中任一项所述的方法，其中，根据所述SI的获取方式获取所需要的SI，包括：
    在所述终端要获取SI时，所述终端监听RRC配置的SI窗口和频域位置来获取所述SI。
  8. 如权利要求1至4中任一项所述的方法，其中，终端进行小区重选，包括：
    检测所述终端是否执行测量过程；
    在执行所述测量过程的情况下，根据测量报告确定是否存在邻小区符合所述终端的小区重选要求；
    在存在邻小区符合所述终端的小区重选要求时，所述终端切换至符合所述终端的小区重选要求的小区。
  9. 一种请求系统消息的装置，包括：
    重选模块，设置为在终端发起系统消息请求过程但尚未成功完成所述系统消息请求过程时，进行所述终端的小区重选；
    重置模块，设置为重置媒体接入控制MAC层或重置RACH过程的相关参数；
    处理模块，设置为根据重选后的小区的无线资源控制RRC配置获取所需要的SI。
  10. 如权利要求9所述的装置，其中，所述处理模块包括：
    确定单元，设置为通过所述重选后的小区的主系统消息块MIB和系统消息块SIB1中的RRC配置确定所述重选后的小区的SI的获取方式；
    获取单元，设置为根据所述SI的获取方式获取所述所需要的SI。
  11. 如权利要求10所述的装置，其中，所述确定单元确定的所述SI的获取方式至少包括以下之一：
    通过所述终端根据RRC配置监听周期性的下行共享信道DL-SCH上的SI窗口来获取相应的SI；
    通过所述终端根据RRC配置重新触发系统消息请求过程来获取相应的SI。
  12. 如权利要求11所述的装置，其中，所述确定单元通过所述终端根据RRC配置重新触发系统消息请求过程来获取相应的SI，包括以下之一：
    通过所述终端发送预先配置与SI类型有着映射关系的前导序列码，来请求与所述前导序列码相对应的SI；
    通过所述终端发送的前导序列码发起随机接入过程，且在Msg.3上携带所需求的SI类型的信息，以获取所述SI类型对应的SI。
  13. 如权利要求9至12中任一项所述的装置，其中，所述获取单元设置为：
    在所述终端要获取SI且该SI已经预先配置了有映射关系的前导序列码ID的情况下，使所述终端的MAC层选择所述RRC配置中指示的与所述SI的前导序列码ID相对应的前导序列码，发起系统消息请求过程以获取所述SI。
  14. 如权利要求9至12中任一项所述的装置，其中，所述获取单元设置为：
    在所述终端要获取SI但所述SI未被预先配置前导序列码ID的情况下，使所述终端的MAC层从基于冲突的竞争接入CBRA的前导序列码集合中选择的一个前导序列码，发起系统消息请求过程以获取所述前导序列码对应的SI。
  15. 如权利要求9至12中任一项所述的装置，其中，所述获取单元设置为：
    在所述终端要获取SI时，监听RRC配置的SI窗口和频域位置来获取所述SI。
  16. 如权利要求9至12中任一项所述的装置，其中，所述重选模块，设置为：
    检测所述终端是否执行测量过程；在执行所述测量过程的情况下，根据测量报告确定是否存在邻小区符合所述终端的小区重选要求；在存在邻小区符合所述终端的小区重选要求时，将所述终端切换至符合所述终端的小区重选要求的小区。
  17. 一种存储介质，存储有计算机程序，其中，所述计算机程序被处理器执行时实现如权利要求1至8中任一项所述的请求系统消息的方法的步骤。
  18. 一种终端，至少包括存储器、处理器，所述存储器上存储有计算机程序，其中，所述处理器在执行所述存储器上的计算机程序时实现权利要求1至8中任一项所述的请求系统消息的方法的步骤。
PCT/CN2019/085730 2018-06-21 2019-05-06 一种请求系统消息的方法、装置、存储介质及终端 WO2019242417A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/254,190 US11825365B2 (en) 2018-06-21 2019-05-06 Method and device for requesting system information, storage medium, and terminal
EP19821740.8A EP3813434A4 (en) 2018-06-21 2019-05-06 METHOD AND DEVICE FOR REQUESTING SYSTEM INFORMATION, STORAGE MEDIUM AND TERMINAL

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810645375.1 2018-06-21
CN201810645375.1A CN110636578B (zh) 2018-06-21 2018-06-21 一种请求系统消息的方法、装置、存储介质及终端

Publications (1)

Publication Number Publication Date
WO2019242417A1 true WO2019242417A1 (zh) 2019-12-26

Family

ID=68967780

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/085730 WO2019242417A1 (zh) 2018-06-21 2019-05-06 一种请求系统消息的方法、装置、存储介质及终端

Country Status (4)

Country Link
US (1) US11825365B2 (zh)
EP (1) EP3813434A4 (zh)
CN (1) CN110636578B (zh)
WO (1) WO2019242417A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021134699A1 (zh) * 2019-12-31 2021-07-08 华为技术有限公司 一种系统信息的传递方法和装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114158062B (zh) * 2020-09-07 2024-04-09 华硕电脑股份有限公司 用于mac重置相关移动性程序的方法和设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102119501A (zh) * 2008-08-08 2011-07-06 交互数字专利控股公司 Mac重置和重新配置
CN108023711A (zh) * 2016-11-04 2018-05-11 夏普株式会社 基站、用户设备和相关方法
CN109392049A (zh) * 2017-08-02 2019-02-26 夏普株式会社 媒体接入控制层的重置方法和装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003246156A1 (en) * 2003-05-30 2005-01-21 Lg Electronics, Inc. Home network system
WO2008097489A2 (en) * 2007-02-02 2008-08-14 Interdigital Technology Corporation Cell reselection/ update while in an enhanced cell fach state
KR101050258B1 (ko) * 2008-03-20 2011-07-19 이노베이티브 소닉 리미티드 Ｒｒｃ 연결 프로시저를 향상시키기 위한 방법 및 장치
CN101873620B (zh) * 2009-04-22 2015-01-28 中兴通讯股份有限公司 小区间的重选参数和切换参数匹配的判断方法及装置
CN102892173B (zh) * 2011-07-22 2018-01-05 中兴通讯股份有限公司 一种业务被禁止发起或被释放后的处理方法及用户终端
US10708853B2 (en) * 2015-06-11 2020-07-07 Apple Inc. Low overhead system information acquisition for wireless communication
CN111083714A (zh) * 2015-10-29 2020-04-28 华为技术有限公司 传输系统信息的方法及基站、终端和系统
WO2018016895A1 (ko) * 2016-07-21 2018-01-25 주식회사 케이티 Nb-iot 단말의 이동성 처리 수행 방법 및 그 장치
CN107889190B (zh) * 2016-09-30 2023-02-03 华为技术有限公司 一种系统消息的获取、发送方法及相关装置
CN108023712B (zh) * 2016-11-04 2022-08-12 夏普株式会社 基站、用户设备和相关方法
KR102478742B1 (ko) * 2016-11-04 2022-12-19 삼성전자 주식회사 무선 통신 시스템에서 최소 시스템 정보를 제공하는 방법 및 사용자 장치
EP3603207A4 (en) * 2017-03-24 2020-07-15 Mediatek Inc. APPARATUSES AND METHODS FOR A REQUEST FOR ON-DEMAND SYSTEM INFORMATION (SI) THROUGH A RANDOM ACCESS PROCEDURE
EP3603306A4 (en) * 2017-04-26 2020-03-25 Samsung Electronics Co., Ltd. METHOD AND DEVICE FOR IMPLEMENTING A DIRECT ACCESS PROCEDURE
WO2018230989A1 (en) * 2017-06-15 2018-12-20 Lg Electronics Inc. Method and apparatus for handling failure of system information request
CN110636457B (zh) * 2017-06-16 2021-01-29 华为技术有限公司 一种通信方法及装置
CN110582089B (zh) * 2018-06-07 2023-06-23 夏普株式会社 系统信息发送的方法以及用户设备

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102119501A (zh) * 2008-08-08 2011-07-06 交互数字专利控股公司 Mac重置和重新配置
CN108023711A (zh) * 2016-11-04 2018-05-11 夏普株式会社 基站、用户设备和相关方法
CN109392049A (zh) * 2017-08-02 2019-02-26 夏普株式会社 媒体接入控制层的重置方法和装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ITRI: "Including Cell Reselection Information in the Minimum SI", 3GPP TSG-RAN WG2 MEETING #95BIS, R2-166484, 30 September 2016 (2016-09-30), XP051161724 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021134699A1 (zh) * 2019-12-31 2021-07-08 华为技术有限公司 一种系统信息的传递方法和装置
EP4068861A4 (en) * 2019-12-31 2022-12-14 Huawei Technologies Co., Ltd. METHOD AND APPARATUS FOR TRANSMITTING SYSTEM INFORMATION

Also Published As

Publication number Publication date
CN110636578B (zh) 2023-10-31
CN110636578A (zh) 2019-12-31
EP3813434A1 (en) 2021-04-28
US11825365B2 (en) 2023-11-21
EP3813434A4 (en) 2022-03-30
US20210136643A1 (en) 2021-05-06

Similar Documents

Publication Publication Date Title
KR102600808B1 (ko) 랜덤 액세스 절차를 수행하는 방법 및 장치
JP7170730B2 (ja) ビーム失敗回復方法、装置およびデバイス
EP2740295B1 (en) Method, apparatus, system and computer program for enabling mobility of a mobile device while in an semi-idle state
KR101264499B1 (ko) Ｅ－ｕｔｒａｎ에서 핸드오버를 수행하기 위한 방법 및 장치
JP2016146669A (ja) 限定加入者グループに対してインバウンドモビリティを提供するためのｐｃｉの混乱を解決する方法および装置
US20220174752A1 (en) Random access method, terminal device, and network device
WO2018202112A1 (zh) 获取系统信息的方法和装置
US20220400520A1 (en) Data transmission method and apparatus, and computer-readable storage medium
WO2018045865A1 (zh) 一种基站切换方法及装置
WO2018171626A1 (zh) 随机接入响应的方法和设备以及随机接入的方法和设备
KR20230128135A (ko) 네트워크 유지 관리를 위한 측정 보고 방법 및 시스템
WO2019242417A1 (zh) 一种请求系统消息的方法、装置、存储介质及终端
JP2019525668A (ja) ＮＢ−ＩｏＴをサポートするランダムアクセス手順
US20230217512A1 (en) Connection establishment method, apparatus, device, and storage medium
CN109474941B (zh) 配置及获取中断时延的方法、基站、用户设备及可读介质
CN110049577B (zh) 一种无线资源控制rrc重建立的方法及装置
JP7464760B2 (ja) ランダムアクセス方法、装置及びネットワーク側機器
JP2020522176A (ja) カバーレベルの決定方法、基地局および端末
CN111132354B (zh) Tci的自动修改方法及装置、存储介质、终端
WO2021174388A1 (en) Method, device and computer storage medium of communication
JP7060611B2 (ja) ランダムアクセス方法および装置、デバイス、ならびに記憶媒体
US20230363011A1 (en) Random access method, terminal device, and non-transitory computer-readable storage medium
CN117616852A (zh) 用于增强上行链路覆盖的方法、设备和系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19821740

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2019821740

Country of ref document: EP

Effective date: 20210121