WO2014032502A1 - 终端接入方法、系统和终端 - Google Patents

终端接入方法、系统和终端 Download PDF

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Publication number
WO2014032502A1
WO2014032502A1 PCT/CN2013/080912 CN2013080912W WO2014032502A1 WO 2014032502 A1 WO2014032502 A1 WO 2014032502A1 CN 2013080912 W CN2013080912 W CN 2013080912W WO 2014032502 A1 WO2014032502 A1 WO 2014032502A1
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WIPO (PCT)
Prior art keywords
terminal
cell
information
network
related information
Prior art date
Application number
PCT/CN2013/080912
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English (en)
French (fr)
Inventor
刘学斌
董晖
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 US14/418,193 priority Critical patent/US9456396B2/en
Priority to JP2015527769A priority patent/JP6019233B2/ja
Priority to KR1020157003804A priority patent/KR101690629B1/ko
Priority to EP13833894.2A priority patent/EP2869631B1/en
Publication of WO2014032502A1 publication Critical patent/WO2014032502A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • 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
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • 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
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure
    • 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
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data

Definitions

  • Terminal access method system and terminal
  • the present invention relates to a mobile communication system, and in particular, to a terminal access method, system, and terminal. Background technique
  • the mobile communication system uses a cellular network cell system. Based on the frequency-multiplexed cellular network cell system, the system capacity is greatly improved, and the generalized network coverage is realized in a true sense.
  • the terminal establishes a connection with the network cell through the access procedure, and obtains a communication service. When the terminal moves and crosses the cell, the handover service is required to switch the communication service with the original cell to the new cell to ensure communication is not performed. Intermittent.
  • Fig. 1 and Fig. 2 it is a schematic diagram of a conventional wireless air interface access process and a wireless air interface switching process that are still in use in the third generation mobile communication system 3G and the fourth generation mobile communication system 4G.
  • the third step to the fifth step in Fig. 2 are all random access.
  • random access has the following five scenarios (A, B, C, D, E), which also represent the reasons for five accesses:
  • RRC_CONNECTED radio resource control - connected state
  • mobile communication systems tend to use the same-cell cellular co-frequency networking, and all cells use the same spectrum resources, but this also causes co-channel interference between adjacent cells.
  • the same-frequency interference is the most serious.
  • the original cell edge may be a signal weak field with a large path loss, and the adjacent channel co-channel interference, the wireless channel condition is worsened, and the SINR (Signal Interference-Noise-Ratio) is lower.
  • SINR Signal Interference-Noise-Ratio
  • steps 1 and 2 are actually the time when the co-channel interference is the most serious and the communication channel quality is the worst.
  • 3G has been greatly simplified. 4G only has a PS (Packet Service), so 4G wireless air interface signaling is much more simplified than 3G.
  • PS Packet Service
  • Both the access process and the handover process can be classified as "RRC Connection” configuration, including “RRC Connection”. "The establishment, reconstruction and reconfiguration.”
  • RRC Connection The establishment, reconstruction and reconfiguration.
  • the random accesses of the three scenarios A, D, and E correspond to the "RRC Connection Setup Request”
  • the random access of the B scenario corresponds to the "RRC Connection Reestablishment Request”
  • the random access of the C scenario corresponds.
  • RRC connection reconfiguration is completed.
  • the 4G terminal can detect the neighboring area by itself, the 4G cell does not need to send the neighboring area information to the terminal like the 3G.
  • the embodiments of the present invention provide a terminal access method, system, and terminal, to solve the problem of large signaling overhead.
  • the terminal downloads and stores a network cloud map including cell related information, where the cell related information includes a terminal public air interface configuration parameter of the cell, where the terminal public air interface configuration parameter and/or the cell broadcast message of the network cloud map is included for the smart
  • the first uplink pilot that is accessed; Performing a random access procedure, where if the network cloud map stored by the terminal includes cell related information to be accessed by the cell, and the related information of the cell is valid, the first uplink pilot is sent, if the network cloud image stored by the terminal does not include Transmitting the cell-related information of the cell, or invalidating the related information of the cell, sending a second uplink pilot for non-intelligent access;
  • An Internet server configured to: store a network cloud map including cell related information, where the cell related information includes a terminal public air interface configuration parameter of the cell, where the terminal public air interface configuration parameter and/or the cell broadcast message of the network cloud image is included
  • the first uplink pilot of intelligent access
  • a network cloud image downloading module of the terminal configured to: download and store a network cloud map including cell related information from an Internet server;
  • a random access module of the terminal configured to: perform a random access process with the cell, where, if the network cloud image stored by the network cloud image download module includes cell related information to be accessed by the cell, and the related information of the cell is valid, Sending a first uplink pilot, if the network cloud image stored by the network cloud image download module does not include cell related information to be accessed by the cell, or the cell related information is invalid, sending a second uplink pilot for non-intelligent access ;
  • the parameter configuration module of the terminal, the cell, and the core network is configured to: perform a wireless air interface parameter configuration process, where, if the terminal sends the first uplink pilot, the terminal corresponding to the terminal common air interface configuration parameter in the network cloud image is not executed. In the public air interface configuration, if the terminal sends the second uplink pilot, the terminal public air interface configuration corresponding to the terminal public air interface configuration parameter in the network cloud image is executed.
  • An embodiment of the present invention further provides another terminal access method, where the method includes:
  • the core network stores a terminal information sharing cloud map, where the terminal information sharing cloud map includes information of a terminal attached or previously attached to the network;
  • the cell After receiving the access request sent by the terminal, the cell searches whether the core network terminal information sharing cloud image has related information of the terminal; The parameter configuration process is performed. If the terminal information sharing cloud map has the terminal, the security parameter configuration is not performed, and if the terminal information sharing cloud map does not have the terminal, the security parameter configuration is performed.
  • the cell updates the terminal information sharing cloud map stored in the core network.
  • the present invention also provides another terminal access system, the system comprising:
  • a shared cloud image storage module of the core network configured to: store a terminal information sharing cloud map, including related information of a terminal attached or previously attached to the network; and updating the terminal information sharing cloud map according to the terminal information update message;
  • a terminal identification module of the cell configured to: after receiving the access request sent by the terminal, searching whether the core network terminal information sharing cloud image has related information of the terminal;
  • the parameter configuration module of the core network, the cell, and the terminal is configured to: perform parameter configuration, wherein if the terminal information sharing cloud map has the terminal, the security parameter configuration is not performed, and if the terminal information sharing cloud map does not have the terminal, the security parameter configuration is performed;
  • a shared cloud map update module of the cell is configured to: send a terminal information update message to the core network when the terminal information changes.
  • the embodiment of the present invention further provides an optimal terminal access method, where the terminal downloads a network cloud map including cell related information from the Internet server, where the cell related information includes a terminal common air interface configuration parameter of the cell, and the core network storage terminal information sharing A cloud map, which includes related information of a terminal attached or previously attached to a network, the method comprising:
  • the terminal selects a cell to be accessed according to the measurement result
  • the random access procedure is performed to perform a random access procedure. If the network cloud image downloaded by the terminal complies with the intelligent access condition, the terminal identification step is performed after the random access procedure, and if the downloaded network cloud image of the terminal does not meet the intelligent access condition, the random access procedure is performed. After the access process, the terminal identification step or the parameter configuration step is performed; the terminal identifying step, the cell searching whether the core network terminal information sharing cloud image has related information of the terminal, and the terminal information sharing cloud image includes a terminal attached or previously attached to the network.
  • the parameter configuration step, the parameter configuration process is performed, wherein if the terminal is in the shared cloud image, the security parameter configuration process is not performed, and if the smart access condition is met, the terminal public air interface in the network cloud image is not executed. Configuration parameter corresponding wireless air interface common parameter configuration; In the cloud image update step, when the information changes, the terminal updates the network cloud map stored by itself, and the 'J, the area updates the terminal information shared cloud map stored in the core network.
  • An embodiment of the present invention provides a terminal, where the terminal includes:
  • a network cloud image downloading module configured to: download and store a network cloud map including a cell related information, where the cell related information includes a terminal public air interface configuration parameter of the cell, and a terminal common air interface configuration parameter and/or a cell of the network cloud image
  • the first uplink pilot for intelligent access is included in the broadcast message;
  • a random access module configured to: perform a random access procedure with the cell, where, if the network cloud image stored by the network cloud image downloading module includes cell related information to be accessed by the cell, and the related information of the cell is valid, a first uplink pilot, if the network cloud image stored by the network cloud image download module does not include cell related information to be accessed by the cell, or the cell related information is invalid, sending a second uplink pilot for non-intelligent access;
  • a parameter configuration module configured to: perform a wireless air interface parameter configuration process, where, if the first uplink pilot is sent, the terminal public air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud image is not executed, and if the second uplink is configured, The uplink pilot performs a terminal common air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud diagram.
  • the embodiment of the invention further provides a terminal access method and a terminal, so as to solve the problem that the same frequency interference is serious during the handover process.
  • the terminal determines, according to the measurement result, that a new cell needs to be switched, and then selects a new cell to be accessed;
  • the terminal sends an uplink pilot
  • the access request sending step after receiving the uplink pilot response sent by the network side, the terminal sends an access request, where the reason for the initiated access is that the initial access is initiated after the radio link fails.
  • the embodiment of the invention further provides a terminal, where the terminal includes:
  • a cell selection module configured to: when the measurement result needs to be switched to a new cell, select a new cell to be accessed;
  • An uplink pilot transmitting module configured to: send an uplink pilot;
  • the access request sending module is configured to: after receiving the uplink pilot response sent by the network side, send an access request, where the reason for the initiated access is that the initial access is initiated after the radio link fails.
  • the terminal access method uses the Internet server or the core network to pre-store the configuration parameters that need to be implemented by the signaling interaction in the access process, which can effectively prevent the terminal from performing excessive signaling interaction and reduce signaling overhead.
  • the embodiment of the present invention directly selects the cell to be handed over and directly initiates an access process to the target cell, thereby avoiding a stage where the interference is serious when interacting with the original cell.
  • FIGS. 1 and 2 are schematic diagrams of a wireless air interface access flow and a wireless air interface switching process of a third generation mobile communication system 3G and a fourth generation mobile communication system 4G, respectively;
  • Embodiment 1 of a terminal access method according to the present invention is a schematic diagram of Embodiment 1 of a terminal access method according to the present invention.
  • Embodiment 2 of a terminal access method according to the present invention
  • FIG. 5 is a schematic diagram of Embodiment 3 of a terminal access method according to the present invention.
  • FIG. 6 is a schematic diagram of Embodiment 4 of a terminal access method according to the present invention.
  • Embodiment 7 is a schematic diagram of Embodiment 5 of a terminal access method according to the present invention.
  • FIG. 8 is a schematic flowchart of a cell selection step in FIG. 7;
  • FIG. 9 is a schematic flow chart of the random access step in FIG. 7;
  • FIG. 10 is a schematic flowchart of judging intelligent access conditions
  • FIG. 11 and FIG. 12 are flowcharts showing the most simplified random access in an access scenario and a handover scenario of a terminal supporting intelligent access according to an embodiment of the present invention
  • Figure 13 is a schematic diagram of the terminal identification step of Figure 7;
  • Figure 14 is a schematic diagram of the parameter configuration steps of Figure 7;
  • Figure 15 is a schematic diagram of the cloud image updating step of Figure 7;
  • 16 is a schematic diagram of four network elements involved in the method according to an embodiment of the present invention.
  • FIG. 17-20 and FIG. 22 are schematic structural diagrams of modules of a terminal access system according to an embodiment of the present invention.
  • FIG. 21 is a schematic structural diagram of a module of a terminal according to the present invention.
  • the Internet server stores a network cloud map including cell related information, where the cell related information includes a terminal common air interface configuration parameter of the cell, and the terminal needs to access a certain cell according to the stored network cloud image and has stored the valid cell.
  • the common parameter configuration process in the access process can be omitted to simplify the access process.
  • the terminal downloads the network cloud image from the Internet server.
  • the terminal only downloads the network cloud image from the Internet server according to a predetermined policy, such as a period or an event, and the terminal can be located according to the location.
  • the method embodiment 1 includes:
  • Step 301 The terminal downloads and stores a network cloud map including cell related information, where the cell related information includes a terminal common air interface configuration parameter of the cell, where the terminal public air interface configuration parameter and/or the cell broadcast message of the network cloud image are included. a first uplink pilot for intelligent access;
  • Step 302 Perform a random access procedure, where if the network cloud image stored by the terminal includes cell related information to be accessed by the cell, and the related information of the cell is valid, the first uplink pilot is sent, if the terminal stores The network cloud diagram does not include cell related information to be accessed by the cell, or the related information of the cell is invalid, and sends a second uplink pilot for non-intelligent access;
  • the cell to be accessed by the terminal is selected by the terminal according to the measurement result.
  • the following method may be used to determine the validity of the cell-related information stored by the terminal: the network cloud map further includes an information update time corresponding to the cell-related information, where the cell-related information further includes cell identifier information used to identify the cell,
  • the cell broadcast message carries the information update time of the cell-related information in the network cloud image.
  • the method further includes: Receiving, by the terminal, a cell broadcast message, and determining, according to the cell identity information, whether the cell-related information of the cell to be accessed is stored; if it is stored, determining the information update time in the cell broadcast message and the cell-related information stored by the terminal Whether the information update time is consistent, if they are consistent, the judgment is valid. If they are inconsistent, the judgment is invalid.
  • Step 303 Perform a parameter configuration process, where, if the terminal sends the first uplink pilot, the terminal public air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud image is not executed, and if the terminal sends the second uplink The pilot performs a terminal common air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud diagram.
  • the parameter configuration process includes terminal-specific parameter configuration, security parameter configuration between the core network and the terminal (including but not limited to authentication, security mode, integrity protection, encryption and decryption algorithms), and a cell.
  • Parameter configuration between the core network and the core network including but not limited to: the access cell obtains and inherits the original bearer configuration of the terminal through the core network; if the access cell and the terminal are different in the current cell on the terminal information sharing cloud map, If the inbound cell is a new cell, the access cell needs to transfer the data transmission relationship of the terminal from the original cell through the core network.
  • the terminal public air interface configuration parameter of the cell in the network cloud diagram can prevent the delay caused by executing the corresponding public air interface configuration parameter of the terminal after the terminal accesses, and optimally, all the terminals in the network cloud map are saved.
  • the air interface configuration parameter that is, the public air interface configuration parameter of the bearer in the existing cell broadcast message (also referred to as the first air interface configuration parameter in the present invention) and other terminal public air ports obtained after the terminal interacts with the cell in the existing process.
  • the configuration parameter (in order to distinguish the part, the parameter is referred to as the second air interface configuration parameter in the present invention); determining that the network cloud image stored by the terminal includes cell related information to be accessed by the cell, and the related information of the cell is valid ( After the situation is also referred to as the smart access condition, the terminal may no longer read the second air interface configuration parameter in the cell broadcast message to minimize the delay; preferably, only the second is saved in the network cloud image.
  • the air interface configuration parameter, the existing cell broadcast message still carries the first air interface configuration parameter
  • the network cloud image stored by the terminal includes cell-related information to be accessed by the cell, and after the cell-related information is valid, the terminal reads the first air interface configuration parameter in the cell broadcast message to complete the corresponding parameter configuration, but does not need to be executed.
  • the corresponding parameter configuration process corresponding to the second air interface configuration parameter It can be understood that all the terminal common configuration parameters of the cell can be divided between the cell broadcast message and the network cloud image in other manners, and the network cloud map stored in the terminal is determined to be related to the cell to be accessed by the cell. After the information about the cell is valid, the terminal no longer needs to perform a parameter configuration process corresponding to the terminal common air interface configuration parameter stored in the network cloud image.
  • the terminal downloads the network cloud image from the Internet server according to the predetermined policy, and simultaneously updates the network cloud image with the public air interface configuration and the cell broadcast message, as shown in FIG. 4, the method embodiment 2 Includes:
  • Step 401 The terminal downloads and stores a network cloud map including cell related information according to a predetermined policy, where the cell related information includes a terminal public air interface configuration parameter of the cell, a terminal public air interface configuration parameter of the network cloud image, and/or a cell broadcast.
  • the message includes a first uplink pilot for intelligent access;
  • Step 402 Perform a random access procedure, where if the network cloud image stored by the terminal includes cell related information to be accessed by the cell, and the related information of the cell is valid, the first uplink pilot is sent, otherwise, the non-intelligent is sent. The second uplink pilot that is accessed;
  • the network cloud map further includes an information update time corresponding to the cell-related information, where the cell-related information further includes cell identifier information used to identify the cell,
  • the cell broadcast message carries the information update time of the cell-related information in the network cloud image.
  • the method further includes:
  • Step 403 Perform a parameter configuration process, where, if the terminal sends the first uplink pilot, the terminal public air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud image is not performed, and if the terminal sends the second uplink pilot, Performing a terminal public air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud diagram.
  • Step 404 The terminal updates the cell related information of the cell in the network cloud image stored in the terminal according to the public air interface configuration result of the terminal, and updates the stored information update time according to the information update time in the received cell broadcast message.
  • the terminal after performing the public air interface configuration, the terminal timely updates the stored network cloud image, interrupts communication between the terminal and the cell, and fails to connect to the Internet server to update the network cloud map according to a predetermined policy. In this case, the process of configuring the public air interface still needs to be performed when re-accessing.
  • the embodiment of the present invention further provides another idea, that is, a core network storage terminal information sharing cloud map, which includes related information of a terminal attached or previously attached to the network, and the cell shares information according to the terminal network storage.
  • the cloud image determines whether the accessed terminal meets the exemption condition. If the security configuration process is not performed and the access process is shortened, the following describes the third embodiment as an example.
  • the core network stores a terminal information sharing cloud map, which includes related information of a terminal attached or previously attached to the network.
  • the security parameter configuration process if the cell determines that the terminal information sharing cloud map is If the related information of the terminal is not used, the security parameter configuration process is not performed. If the cell determines that the terminal information sharing cloud map does not have the related information of the terminal, the security parameter configuration process is performed. Specifically, as shown in FIG. 5, the method is implemented.
  • Example 3 includes:
  • Step 501 The core network stores a terminal information sharing cloud map, where the terminal information sharing cloud map includes information of a terminal attached or previously attached to the network;
  • Step 502 After receiving the access request sent by the terminal, the cell searches whether the core network terminal information sharing cloud image has related information of the terminal.
  • the cell searches for the terminal network identifier matching the MSG3 sent by the access terminal through the terminal information sharing cloud map of the core network. If the search is found before the search timer expires, then the terminal can be initially determined to be the network. A legitimate user should be accepted. Then, based on the principle of geographical proximity, the current cell of the terminal, that is, the original cell, is found in the terminal information sharing cloud map. If the original cell is found to be consistent with the new cell, it indicates that the terminal does not change the cell, and still accesses the original cell.
  • the new cell needs to negotiate with the original cell through the core network, inherit the bearer configuration information of the terminal in the original cell, and complete the transfer of the terminal data transmission relationship.
  • Step 503 Perform a parameter configuration process, where the terminal information sharing cloud map has the terminal, and the security parameter configuration is not performed. If the terminal information sharing cloud map does not have the terminal, the security parameter configuration is performed; if some special configurations related to the terminal individual cannot pass
  • the previous configuration may not be obtained by default rules, such as 4G PUCCH (Physical Uplink Control Channel) and corresponding CQI/PMI/RI/ACK/NACK configuration, SRS (Sounding Reference Signal)
  • the configuration of the signal requires the cell to perform another signaling configuration for the access terminal after the MSG3, but the signaling overhead is much smaller than that of the conventionally configured signaling.
  • Add, modify, release, and PDSCH Physical Downlink Shared Channel, Physical
  • SPS Semi-Packet Service
  • QOS Quality of Service
  • TM Transfer Mode handover of the downlink shared channel also requires the cell to which the terminal belongs to send signaling for configuration.
  • Step 504 When the information changes, the cell updates the terminal information sharing cloud map stored in the core network.
  • the cell sends a terminal information update message to the core network; and the core network updates the terminal information sharing cloud map according to the terminal information update message.
  • Updating the terminal information sharing cloud map includes creating and modifying terminal related information. Specifically, after the terminal successfully accesses the cell, the cell needs to go to the terminal information sharing cloud map of the core network to find the terminal, and if found, update the related information, and if not found, create the terminal and related information.
  • the change of the terminal information includes the following situations:
  • the terminal information sharing cloud map starts a timer, and if the timer expires and the terminal information is not received, The new message, the terminal information sharing cloud image deletes related information of the deactivated terminal.
  • the embodiment of the present invention further provides a terminal access method, which focuses on improving the existing cell switching process. As shown in FIG. 6, the method includes:
  • Step 601 The cell selection step, the terminal determines, according to the measurement result, that the handover needs to be performed to a new cell, and then selects a new cell to be accessed;
  • Step 602 The uplink pilot transmission step, where the terminal sends an uplink pilot.
  • Step 603 The access request sending step, after receiving the uplink pilot response sent by the network side, the terminal sends an access request, where the reason for the initiated access is that the initial access is initiated after the radio link fails.
  • the existing handover technology is that the terminal has moved to the coverage of the new cell, that is, the coverage signal strength of the new cell is better than the coverage signal strength of the original cell, and the measurement report is sent to the original cell, and then the original cell sends a handover command to the original cell.
  • the terminal in this process, the terminal always communicates with the weaker original cell, so that it is always interfered by the stronger new cell signal.
  • the terminal directly according to the measurement result in the handover scenario.
  • the cell Interacting with the new cell to be accessed, avoiding the worst channel conditions in the traditional handover process, reducing the risk of communication interruption caused by handover failure, and initial access initiated after the radio link fails in the access request After the access request is received by the cell, the cell can smoothly connect with the existing access process.
  • the method in the embodiment of the present invention is compatible with intra-cell access and inter-cell handover, and combines two intra-cell access and inter-cell handover signaling processes to simplify signaling.
  • the access reason carried in the access request is initial access (corresponding to the A scenario in the background art), and the initial access initiated after the radio link fails (corresponding to B scene in the background art), random access during handover (corresponding to the C scenario in the background art), downlink data arrival in the connected state (corresponding to the D scenario in the background art), or uplink data in the connected state Arrival (corresponding to the E scenario in the background art),
  • the specific message of the access request is the same as the prior art, that is, in the eight, D, and E scenarios, the access request is an "RRC Connection Establishment Request", in the B scenario,
  • the access request is an "RRC Connection Reestablishment Request", in the C scenario, the access request "RRC Connection Reconfiguration Complete”; if the terminal sends the second uplink pilot, the access original carried in the access request Because A, B, D, and E, it should be noted that when the terminal switches to the new cell, the reason for the access is changed to the initial access initiated after the radio link fails
  • the cell broadcast message further carries the cell running status information. If the cell running status information indicates that the current cell is in a congested state, the terminal reselects the cell to be accessed to perform a random access procedure.
  • the terminal access method simultaneously uses the network cloud image and the terminal information sharing cloud map to simplify the parameter configuration process.
  • the Internet server stores a network cloud map including cell related information, where the cell related information includes terminal public air interface configuration parameters of the cell, and the terminal downloads a network cloud map including cell related information from the Internet server according to a predetermined policy, and the core network stores A terminal information sharing cloud map, which includes related information of a terminal attached or previously attached to the network.
  • the method includes: Step 701: A cell selection step, the terminal selects a cell to be accessed according to the measurement result; As shown, the cell selection step includes:
  • Step 7011 The terminal selects a cell based on the measurement.
  • Step 7012 Receive the cell broadcast message, and read the cell status information therein.
  • Step 7013 Determine whether the cell is congested. If the cell is congested, go to step 7011. If it is not congested, go to step 702, that is, the random access step.
  • Step 702 Perform a random access procedure in the random access procedure. If the downloaded network cloud image of the terminal meets the intelligent access condition, the terminal identification step is performed after the random access procedure, if the downloaded network cloud image of the terminal does not comply with the intelligent access Condition, the terminal identification step or parameter configuration step is performed after the random access process;
  • the random access steps include:
  • Step 7021 Send an uplink pilot MSG1 to the terminal.
  • the smart access uplink pilot also referred to as the first uplink pilot
  • the non-intelligent access is sent.
  • Uplink pilot also known as second uplink pilot.
  • the judging process conforming to the intelligent access condition includes:
  • Step 1001 Determine whether a network cloud image is stored, and if yes, perform step 1002. If not, determine that the smart access condition is not met;
  • the terminal can match the cell information on the network cloud map based on the measurement of the serving cell and the neighboring cell, and combine the historical information before the terminal to comprehensively determine the relationship between the current network and the network cloud image. If it is impossible to judge, it is determined that the stored network cloud image temporarily fails and cannot meet the conditions of intelligent access.
  • Step 1002 Determine whether the network cloud image includes the current area, and if yes, perform step 1003. If not, determine that the smart access condition is not met;
  • Step 1003 Determine whether the current area has the cell information, and if yes, perform step 1004, if no, determine that the smart access condition is not met;
  • Step 1004 Read an information update time of the cell.
  • Step 1005 Determine whether the stored information update time of the cell is consistent with the information update time of the cell on the cell broadcast message, and if yes, determine that the smart access condition is met, and if not, determine that the smart access condition is not met. .
  • Step 7022 The cell sends an uplink pilot response MSG2 after receiving the MSG1.
  • Step 7023 The terminal sends an access request MSG3, which is equivalent to the "RRC Connection Request” or the “RRC Connection Reestablishment Request” of the traditional access procedure in 4G, or the "RRC Connection Reconfiguration Complete” of the traditional handover procedure, which carries The reason (one of A/B/C/D/E) and the valid network ID assigned when the terminal was attached to the network. If the terminal is not attached to the network before (for example, just turned on), and there is no network identifier, the MSG3 sent by the terminal carries the temporary network identifier allocated by the cell to the terminal through the MSG2, for example, C-RNTI (Cell-Radio Network Temporary Indicator, cell- Wireless network temporary identification).
  • C-RNTI Cell-Radio Network Temporary Indicator, cell- Wireless network temporary identification
  • FIG. 11 and FIG. 12 are diagrams showing an access scenario and a handover of a terminal supporting intelligent access according to an embodiment of the present invention; The most simplified random access flowchart in the scenario. Compared with the traditional access flowchart of FIG. 1 and the traditional handover flowchart of FIG. 2, it can be seen that the new procedure effectively simplifies the wireless air interface signaling and reduces the signaling overhead.
  • Step 703 The terminal identifying step, the cell searching whether the core network terminal information sharing cloud image has related information of the terminal, where the terminal information sharing cloud image includes information of a terminal attached or previously attached to the network;
  • the cell For a terminal that accesses the uplink pilot by intelligent access, the cell must go to the terminal information sharing cloud map of the core network to search for the terminal, and if it is found before the preset lookup timer expires, The terminal determines that the smart terminal is exempt from detecting, and if it is not found before the preset search timer expires, it is determined to be the smart terminal to be inspected.
  • the cell can go to the terminal information sharing cloud map of the core network to search for the terminal. If the preset search timer expires before the timeout is found, the terminal is determined to be unchecked. The terminal determines that the normal terminal is to be checked if it is not found before the preset lookup timer expires.
  • the cell and the core network may also process the terminal accessed by the non-smart access uplink pilot according to the existing mechanism, that is, the traditional access and handover are handled in a conventional manner.
  • Step 704 Parameter configuration step, performing parameter configuration process.
  • the parameter configuration is described below by taking the configuration parameters of all terminal common air interfaces in the network cloud diagram as an example.
  • the parameter configuration includes the following aspects:
  • the first parameter ( SS1_1 ) configuration wireless air interface common parameter configuration
  • the second parameter ( SS1_2 ) configuration wireless air interface dedicated parameter configuration
  • the second parameter (SS1— 2) is a dedicated parameter, which represents the personalized configuration of the terminal in the cell, and the dedicated parameters of different terminals, some of which can be configured to be the same, and some of which must be different, in the development trend of resource sharing of mobile communication technologies.
  • This kind of personalized configuration is getting less and less, that is, the proportion of SS1-2 in SS1 is getting smaller and smaller;
  • the third parameter (SS2) configuration security parameter configuration between the core network and the terminal; including but not limited to authentication, security mode, integrity protection, encryption and decryption algorithms, etc.;
  • Fourth parameter (SS4) configuration parameter configuration between the cell and the core network: including but not limited to, the access cell obtains and inherits the original bearer configuration of the terminal through the core network; if the access cell and the terminal share the cloud information in the terminal information The current cell is different, that is, the access cell is a new cell, and the access is small. The area also needs to transfer the data transmission relationship of the terminal from the original cell through the core network;
  • the terminal is a terminal, the terminal is a non-inspection terminal, and the security parameter configuration process is not performed. If the terminal does not have the terminal, the terminal is a terminal to be inspected, and the security parameter configuration process needs to be performed. If the smart access condition is met, the public air interface common parameter configuration corresponding to the terminal public air interface configuration parameter in the network cloud image is not executed. If the terminal does not meet the smart access condition, the terminal public air interface in the network cloud image needs to be executed. Configure the parameters of the corresponding wireless air interface common parameters. As shown in Figure 14, the following four scenarios can be combined:
  • the intelligent terminal is exempt from inspection, which is the exemption terminal and meets the intelligent access conditions.
  • the parameter configuration only includes SS1-2 and SS3;
  • the intelligent terminal to be inspected is the terminal to be inspected but meets the intelligent access conditions, and the parameter configuration includes
  • the parameter configuration only includes SS1 and SS3;
  • the normal terminal to be inspected is the terminal to be inspected but does not meet the intelligent access conditions.
  • the parameter configuration includes SS1, SS2 and SS3.
  • Step 705 The cloud image update step, when the information changes, the terminal updates the network cloud map stored by itself, and the cell updates the terminal information shared cloud map stored in the core network.
  • the cloud image update includes two parts: the terminal updates the network cloud map on its own memory and the terminal information sharing cloud map on the cell update core network.
  • the terminal updates the information about the access cell on the storage network cloud map in the following two ways:
  • Manner 1 If the terminal further configures the public parameter SS1-1 in the parameter configuration phase of the access, the terminal needs to update the common parameter SS1-1 obtained in the parameter configuration phase together with the public parameter SS0 obtained by reading the cell broadcast message.
  • the information update time of the cell is modified to the information update time in the cell broadcast;
  • mode 2 the terminal accesses the Internet, downloads and updates the access on the network cloud image Information about the community.
  • the information about the terminal in the cell update core network information sharing cloud map includes two operations of modification or new construction. If the cell finds the access terminal in the terminal information sharing cloud map, the update is a modification operation, and if it is not found, it is updated to a new operation. And terminal information sharing cloud map terminal letter The deletion operation of the information is initiated after the terminal lifetime timer starts and times out.
  • the network cloud diagram according to the embodiment of the present invention is an electronic map containing information about the update information of each cell in the mobile communication network and the related information of the corresponding cell.
  • the time granularity of the information update time can be days, hours, or even minutes. If the information in the network cloud map is updated on a daily basis, for example, 0 points per day, the information update time granularity is days. If the update is triggered by an event, for example, the information of a certain cell changes, and the Internet server that synchronizes the storage network cloud map is notified, the information update time granularity may be minutes; if the cell does not support intelligent access, the information update time is The default value, such as 0;
  • Cell identification information used to identify a cell.
  • the meaning of the cell identity information is to distinguish different cells, and the specific ones may be: a scrambling code used to distinguish cells in 3G, and a PCI used to distinguish cells in 4G.
  • the cell identity information may also include geographic location information, where the specific geographic location information may be the latitude and longitude of the cell, and may be added to the altitude as needed, from the planar map to Three-dimensional map
  • Wireless air interface configuration parameters Various common parameters configured by the cell to the terminal, including broadcast messages, access procedures, and various common parameters configured by the cell to the terminal during the handover process.
  • the neighboring area information in the public parameters may only be included in the individual. The neighbor is not offset by zero.
  • the wireless air interface configuration parameters include: SI (system message), SecurityConfig (security configuration), UE TimersAndConstants (UE timer and counter), RadioResourceConfigCommon (radio resource common configuration), RadioResourceConfigDedicated (radio resource dedicated configuration) and terminal Individual independent configuration, MeasConfig (measurement configuration);
  • Extended fields Used for enriching and expanding network cloud image information, for example, increasing the coverage direction of a cell
  • the network cloud map is a database of mobile communication cellular network cell information, which is stored on a server of the Internet (public external network) for free download, storage and use by the terminal.
  • the terminal is not limited to being connected to the server through the mobile communication network according to the present invention to download the network cloud image, but may be wired, Connect to the server to download the network cloud map in any network mode such as wireless.
  • each cell in the cellular network updates the latest information to the network cloud map on the Internet through the core network according to an agreed mechanism, such as a periodic triggered update or an event triggered update.
  • the terminal may acquire and update the cell related information from the network cloud image on the Internet, or may obtain the latest information of the cell by reading the broadcast message of the access cell and the wireless air interface parameter configured by the cell in the access process to the terminal, and update the terminal.
  • Information about the cell (such as wireless air interface configuration parameters) and information update time on the stored network cloud map.
  • the wireless air interface configuration parameters of each cell of the network cloud map are common to all terminals accessing the cell, that is, independent of the terminal individuals, so the present invention is more suitable for the next generation mobile communication system and the partially modified 4G network and 3G HSPA+ network. in. Because in these networks, the channel resources in the cell are basically shared scheduling, there is basically no difference in the wireless air interface configuration parameters between the terminals.
  • the control of the network cloud map on the Internet is the operator of the relevant network, and others have no right to create, delete and modify.
  • the network cloud diagram on the terminal cannot be modified arbitrarily, but must be updated in the manner described in the present invention to avoid inaccurate information and inability to communicate.
  • the network In the initial stage of mobile communication network construction, the network is still in the stage of adjustment and optimization, and the network cloud map update will be more frequent. After the network matures, the network cloud map will also stabilize.
  • the terminal information sharing cloud image in the embodiment of the present invention is an electronic map including information related to each terminal in the mobile communication network attached to the network. It is an information database stored on the core network (private intranet) to which the mobile communication network of the present invention belongs, and related information includes:
  • the network identifier assigned by the terminal to the network that is, UE-Context (terminal context information), such as GUTI (Globally Unique Temporary Identifier);
  • the network identifier of the cell to which the terminal currently belongs For example, 4 y code of 3G cell, 4G cell PCI;
  • the survival timer setting can be comprehensively considered according to the communication service characteristics, security considerations, and tracking area update of the terminal. For example, it can be set to 1 hour or 1 day.
  • Extension field It is used for the enrichment and expansion of terminal information sharing cloud map information.
  • the terminal is capable of adding information such as IMEI (International Mobile Equipment Identity), IMSI (International Mobile Subscriber Identification Number), and the like;
  • the network may assign duplicate terminal network identifiers to different terminals in different cells. Therefore, adding cell information in the terminal information sharing cloud map can be used to distinguish these terminals.
  • the new cell needs to go to the terminal information sharing cloud map of the core network to find the terminal, and if found, and determine that it is the same terminal (the geographic information of the new cell and the original cell can be used for judging), Update the relevant information, if not found, create a new information about this terminal.
  • the control of the terminal information sharing cloud map is also the network operator, and others have no right to create, delete, and tamper with.
  • the terminal can access the Internet server that places the network cloud map in an unlimited time, unlimited location, unlimited network, and unlimited manner, and download a certain size network cloud map according to the storage capacity and geographic activity range of the terminal. For example download current A network cloud map of a location where the location is located, a network cloud map of the frequently active area, a network cloud map of the current high-speed rail network, and the like.
  • the download information is in units of cells.
  • the cell information is updated, if the terminal finds that the information update time of the cell on the storage network cloud map is not earlier than the information update time of the corresponding cell in the network cloud image on the Internet server, the cell information remains unchanged, that is, no update is performed.
  • the terminal decides the update time autonomously. For example, the network cloud map can be updated periodically, and the mobile situation and the service cell situation can be combined to determine whether to update.
  • the terminal can autonomously delete the network cloud map that is not used for a long time.
  • Intelligent access means that when the terminal determines that there is valid information of the access cell in the storage network cloud map, the terminal initiates the access initiated by a part of the uplink pilot (defined herein as the intelligent access uplink pilot) specially allocated from the access cell.
  • the traditional access and handover is when the terminal determines that there is no valid information of the access cell in the storage network cloud map, and uses other uplink pilots except the smart access uplink pilot (here defined as non-intelligent access uplink pilot). Initiated access.
  • the terminal needs to update the cell related information and the information update time of the access cell on the storage network cloud map by combining the cell broadcast message and the wireless air interface parameter configured by the cell in the access process to the terminal, where the information is updated.
  • the update time is updated to the information update time in the cell broadcast message.
  • a terminal that supports intelligent access does not send a measurement report to the original cell and receives a handover command from the original cell, but initiates an access reason directly in the new cell as B.
  • the traditional access initiated after the initial access (note that it is not random access when C" is switched, that is, the RRC connection reestablishment request, thus avoiding the two shown in steps 1 and 2 of Figure 2. The worst stage of channel conditions.
  • the terminal can match the cell information on the network cloud map based on the measurement of the serving cell and the neighboring cell, and combine the historical information before the terminal to comprehensively determine the relationship between the current network and the network cloud map. If it is impossible to judge, it is determined that the stored network cloud map is temporarily suspended. The time expires and the conditions for intelligent access cannot be met.
  • the information amount of one cell does not exceed lOKBits, and the total amount of information of 3000 cells (1000 sectors per base station) of 1000 base stations is only 30 MBits. Since the wireless air interface configuration parameters of most cells are the same, several sets of typical configuration templates can be standardized and indexed for each cell, so the actual total amount of information is much less. Storing this information is completely okay for the terminal relative to the storage capabilities of the current and future terminals.
  • One of the processing requirements of the terminal's processing capability is to be able to support peak traffic data transmission. However, in practical applications, this happens in a small amount of time. This is not the case during the access process. The terminal has sufficient processing. Capability redundancy to complete intelligent access related processing.
  • the cell needs to classify the uplink pilot resources that are randomly accessed according to certain rules, and some of them are used for intelligent access, which is defined as intelligent access uplink pilot. Others can be further distinguished for traditional access and handover, which are collectively referred to herein as non-intelligent access uplink pilots.
  • an "intelligent access uplink pilot" is added to the extended or reserved field of the broadcast message, and the uplink pilot field for the conventional access and handover in the broadcast message continues to be reserved, but the pilot resources are relatively reduced. It is.
  • the cell updates the network cloud image on the Internet server according to the agreed mechanism, for example, a period trigger update or an event trigger update;
  • the complete terminal access process is as follows:
  • Step 1201 The terminal supporting intelligent access detects and selects an optimal cell by using signal measurement
  • Step 1202 Read a broadcast message of the cell.
  • Step 1203 The terminal confirms whether the cell is congested by using a cell broadcast message. If it is congested, go back to step 1 and reselect a new cell. If it is not congested, go to the next step.
  • Step 1204 The terminal searches for its own memory, and confirms in turn: whether a valid network cloud is stored. Whether the network cloud map includes the current area, whether the current area has the cell information, and whether the information update time in the cell information is consistent with the cell broadcast message. If all the foregoing determinations are yes, determining that the terminal satisfies the condition for intelligently accessing the cell, and if all the foregoing determinations are negative, determining that the terminal does not satisfy the condition for intelligently accessing the cell, proceeds to the next step;
  • Step 1205 The terminal sends the MSG1 to the cell. If the smart access condition is met, the MSG1 is the smart access uplink pilot. If the smart access condition is not met, the MSG1 is the non-intelligent access uplink pilot. Step 1206: The cell to the terminal Send MSG2;
  • Step 1207 The terminal sends the MSG3 to the cell, and the reason for the access is determined according to the actual situation.
  • the access reason includes A/B/C/D/E, and when the smart access condition is not met, the access is performed.
  • Reasons cover A/B/D/E;
  • Step 1208 The cell searches for the terminal in the terminal information sharing cloud map of the core network. If the preset search timer is found before the timeout expires, and the smart access condition is met, the terminal is determined to be a smart terminal without inspection, and the smart connection is not satisfied. When the condition is entered, the terminal is determined to be exempt from the normal terminal. If the preset search timer is not found before the timeout expires, and the intelligent access condition is met, the terminal is determined to be the intelligent terminal to be inspected, and the intelligent access condition is not satisfied. When the terminal determines the ordinary terminal to be inspected, proceeds to the next step;
  • Step 1209 Parameter configuration, wherein, if the intelligent terminal is exempted, the dedicated parameter configuration of the SS1-2 is completed between the cell and the terminal, and the parameter configuration of the SS3 is completed between the cell and the core network; if the intelligent terminal is to be inspected, the cell The SS1-2 parameter configuration is completed between the terminal and the terminal, and the SS2 parameter configuration is completed between the core network and the terminal, and the SS3 parameter configuration is completed between the cell and the core network; if the normal terminal is exempted, the cell and the terminal are completed.
  • SS1 including common parameter SS1-2 and dedicated parameter SS1-2
  • SS3 parameter configuration is completed between the cell and the core network; if it is an ordinary terminal to be inspected, SS1 is completed between the cell and the terminal (including common parameters) Parameter configuration of SS1—2 and dedicated parameter SS1—2), SS2 parameter configuration is completed between the core network and the terminal, and SS3 parameter configuration is completed between the cell and the core network;
  • Step 1210 If the related information changes, the terminal needs to update related information of the cell on the network cloud map stored by itself, and the cell needs to update related information of the terminal on the terminal information sharing cloud map.
  • 16 is a schematic diagram of four network elements involved in a method according to an embodiment of the present invention, including "a cell supporting a mobile communication cellular network with intelligent access”, a “terminal supporting intelligent access”, and “a cloud image of a terminal information sharing”
  • the core network "," the Internet with the network cloud map” four major network elements.
  • an embodiment of the present invention provides a terminal access system, as shown in FIG. 17, the system includes:
  • the Internet server is configured to: store a network cloud map including cell related information, where the cell related information includes a terminal public air interface configuration parameter of the cell, where the terminal public air interface configuration parameter and/or the cell broadcast message of the network cloud image is included for intelligence The first uplink pilot that is accessed;
  • the network cloud image downloading module of the terminal is configured to: download and store a network cloud map including cell related information from an Internet server according to a predetermined policy,
  • the random access module of the terminal is configured to: perform a random access process with the cell, where, if the network cloud image stored by the network cloud image downloading module includes cell related information to be accessed by the cell, and the related information of the cell is valid, Sending a first uplink pilot, if the network cloud image stored by the network cloud image download module does not include cell related information to be accessed by the cell, or the related information of the cell is invalid, sending a second uplink pilot for non-intelligent access ;
  • the parameter configuration module of the terminal, the cell, and the core network is configured to: perform a wireless air interface parameter configuration process, where, if the terminal sends the first uplink pilot, the terminal corresponding to the terminal common air interface configuration parameter in the network cloud image is not executed. In the air interface configuration, if the terminal sends the second uplink pilot, the terminal public air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud image is executed.
  • the network cloud map further includes information update time corresponding to the cell related information, where the cell related information further includes cell identifier information for identifying the cell, and the cell broadcast message carries the information update time of the cell related information in the network cloud map.
  • the system further includes:
  • the validity determining module of the terminal is configured to receive a cell broadcast message and determine whether the cell related information of the cell to be accessed is stored according to the cell identity information before performing the random access; and when determining that the cell broadcast message is stored, Whether the information update time in the cell broadcast message is consistent with the information update time in which the cell related information has been stored, and if they match, the judgment is valid, and if not, the judgment is not Effective.
  • the to-be-accessed cell is selected by the terminal according to the measurement result.
  • the system further includes:
  • the network cloud image update module of the terminal is configured to: after performing the public air interface configuration of the terminal, update the cell related information of the cell in the network cloud image stored by the terminal according to the public air interface configuration result of the terminal, and according to the information in the received cell broadcast message
  • the update time updates the time it takes to store the information.
  • the system further includes:
  • the shared cloud image storage module of the core network is configured as: a storage terminal information sharing cloud map, which includes related information of a terminal attached or previously attached to the network;
  • the terminal information judging module of the cell is configured to: determine whether there is related information of the terminal in the terminal information sharing cloud map stored in the core network;
  • the parameter configuration module of the terminal, the cell, and the core network does not perform the security parameter configuration process
  • the terminal information sharing cloud image does not have the related information of the terminal
  • the parameter configuration performed by the parameter configuration module of the cell and the core network further includes a transfer data transmission relationship when inheriting the existing bearer configuration and the cell handover.
  • the system further includes a shared cloud image update module of the cell, configured to: send a terminal information update message to the core network when the terminal information changes;
  • the shared cloud image storage module of the core network is further configured to: update the terminal information sharing cloud map according to the terminal information update message.
  • the shared cloud map update module of the cell is further configured to: when the cell disconnects from the terminal, send a deactivation message to the shared cloud map storage module of the core network;
  • the shared cloud image storage module of the core network is further configured to: start a timer according to the deactivation message, and if the timer expires and the terminal information update message is not received, delete related information of the deactivated terminal.
  • the random access module of the terminal interacts with the cell, including: sending an uplink pilot to the cell to be accessed, and transmitting an access request after receiving the uplink pilot response, where the terminal determines that the device needs to be switched according to the measurement result.
  • the second uplink pilot is sent to the new cell, and the access reason carried in the access request is the initial access initiated after the radio link fails.
  • the cell broadcast message further carries cell operating state information. If the cell operating state information indicates that the current cell is in a congested state, the random access module of the terminal reselects the cell to be accessed to perform random access. process.
  • the embodiment of the present invention further provides a terminal.
  • the terminal includes:
  • the cell selection module is configured to: when the measurement result needs to be switched to a new cell, select a new cell to be accessed;
  • the uplink pilot transmitting module is configured to: send an uplink pilot
  • the access request sending module is configured to: after receiving the uplink pilot response sent by the network side, send an access request, where the reason for the initiated access is that the initial access is initiated after the radio link fails.
  • the embodiment of the present invention further provides another terminal access system.
  • the system includes:
  • a shared cloud map storage module of the core network configured to: store a terminal information sharing cloud map, including related information of a terminal attached or previously attached to the network; and update the terminal information sharing cloud map according to the terminal information update message;
  • the terminal identification module of the cell is configured to: after receiving the access request sent by the terminal, searching whether the core network terminal information sharing cloud image has relevant information of the terminal;
  • the parameter configuration module of the core network, the cell, and the terminal is configured to: perform parameter configuration, wherein if the terminal information sharing cloud map has the terminal, the security parameter configuration is not performed, and when the terminal information sharing cloud diagram does not have the terminal, the security parameter is executed.
  • the shared cloud map update module of the cell is configured to: send a terminal information update message to the core network when the terminal information changes.
  • the shared cloud image updating module of the cell is further configured to: when the cell is out of communication with the terminal, send a deactivation message to the shared cloud image storage module of the core network;
  • the shared cloud image storage module of the core network is further configured to: start a timer according to the deactivation message, and if the timer expires and the terminal information update message is not received, delete the related information of the deactivated terminal. .
  • the embodiment of the present invention further provides a terminal for implementing Embodiment 1, 2 or 5, the terminal includes:
  • the network cloud image downloading module is configured to: download and store, according to a predetermined policy, a network cloud map including a cell related information, where the cell related information includes a terminal public air interface configuration parameter of the cell, and the terminal public air interface configuration parameter of the network cloud image and/or Or the cell broadcast message includes a first uplink pilot for intelligent access;
  • a random access module configured to: perform a random access procedure with the cell, where, if the network cloud image stored by the network cloud image downloading module includes cell related information to be accessed by the cell, and the related information of the cell is valid, An uplink pilot, if the network cloud image stored by the network cloud image download module does not include cell related information to be accessed by the cell, or the cell related information is invalid, sending a second uplink pilot for non-intelligent access;
  • the parameter configuration module is configured to: perform a wireless air interface parameter configuration process, where, if the first uplink pilot is sent, the terminal public air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud image is not executed, and if the second uplink is sent, The pilot performs a terminal common air interface configuration corresponding to the terminal common air interface configuration parameter in the network cloud diagram.
  • the network cloud map further includes an information update time corresponding to the cell related information
  • the cell related information further includes cell identifier information used to identify the cell
  • the cell broadcast message carries information update time of the cell related information in the network cloud map
  • the validity determining module is configured to: before performing the random access, receive the cell broadcast message, and determine, according to the cell identity information, whether the cell related information of the cell to be accessed is stored; and when determining that the cell is stored, the method further determines the cell broadcast message. Whether the information update time in the information update time is the same as the information update time in which the d-area-related information has been stored, if it is consistent, the judgment is valid, and if it is inconsistent, the judgment is invalid.
  • the to-be-accessed cell is selected by the terminal according to the measurement result.
  • the terminal further includes:
  • the network cloud image update module is configured to: after performing the public air interface configuration of the terminal, update the cell related information of the cell in the network cloud image stored by the terminal according to the public air interface configuration result of the terminal, and according to The information update time in the received cell broadcast message updates its stored information update time.
  • the embodiments of the present invention are applicable to a mobile communication system based on channel resource sharing scheduling, and a mechanism based on channel resource sharing scheduling is also a trend of development of a mobile communication system.
  • HSPA+ and 4G in the late 3G have basically established this mechanism, and the next generation mobile communication system will use this mechanism more thoroughly, so the present invention is more suitable for the next generation mobile communication system.
  • the invention can be applied after the 3G HSPA+ and 4G are properly upgraded and upgraded.
  • the terminal access method in the embodiment of the present invention has obvious simplification in signaling, and avoids the signaling phase in which the wireless channel condition is the worst in the traditional handover process (Fig. 2).
  • the air interface delay of access and handover can be effectively reduced, and the success rate of access and handover is improved, and the signaling overhead is greatly reduced and the signaling overhead is reduced.
  • Co-channel interference enables the network to use more resources and energy for transmitting truly valid data and improve resource utilization. This is beneficial for improving the service performance of the cell edge switching area under the same frequency network. of.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any particular combination of hardware and software.
  • the embodiment of the present invention uses the Internet server or the core network to pre-store the configuration parameters that need to be implemented by the signaling interaction in the access process, which can effectively prevent the terminal from performing excessive signaling interaction and reduce signaling. Overhead.
  • the embodiment of the present invention directly selects a cell to be handed over and directly initiates an access process to the target cell, thereby avoiding a stage in which interference is serious when interacting with the original cell.

Abstract

一种终端接入方法、系统和终端，该方法包括：终端从因特网服务器下载并存储包括小区相关信息的网络云图，小区相关信息包括小区的终端公用空口配置参数，网络云图的终端公用空口配置参数和/或小区广播消息中包括用于智能接入的第一上行导频，执行随机接入过程，其中，若终端存储的网络云图包括要接入小区的小区相关信息，且该小区相关信息有效，则发送第一上行导频，若终端存储的网络云图不包括要接入小区的小区相关信息，或该小区相关信息无效，则发送第二上行导频；执行参数配置过程，其中，若终端发送第一上行导频，则不执行与所述网络云图中终端公用空口配置参数相应的终端公用空口配置。

Description

终端接入方法、 系统和终端
技术领域
本发明涉及移动通信系统， 尤其涉及一种终端接入方法、 系统和终端。 背景技术
移动通信系统釆用蜂窝组网小区制。 基于频率复用的蜂窝组网小区制， 大大提高了系统容量， 真正意义上实现了广义的网络覆盖。 终端通过接入流 程建立起与网络小区之间的联系， 并获得通信服务， 当终端移动并跨越小区 时， 需要通过切换流程， 把与原小区之间的通信业务切换到新小区， 保证通 信不间断。 如图 1和图 2, 是目前第三代移动通信系统 3G和第四代移动通信 系统 4G都仍在使用的传统的无线空口接入流程和无线空口切换流程的示意 图。 其中图 1中的第 1步到第 3步， 图 2中的第 3步到第 5步， 都是一种随 机接入。 在 4G里， 随机接入有如下五种场景 （A、 B、 C、 D、 E ) , 也代表 五种接入的原因：
A、 从 RRC— IDLE ( Radio Resource Control _ IDLE, 无线资源控制-空闲 态）发起的初始接入；
B、 无线链路失败后发起的初始接入；
C、 切换时进行随机接入；
D、 RRC— CONNECTED (无线资源控制-连接态） 下的下行数据到达；
E、 RRC— CONNECTED 下的上行数据到达；
上述五种场景可以通过图 1第 3步或图 2第 5步的信令内容区别开来。 为了进一步提高频谱利用率， 从 3G开始， 移动通信系统就倾向于釆用 全网蜂窝小区同频组网， 所有小区都使用相同的频谱资源， 但这样， 也使得 相邻小区间产生同频干扰， 在相邻小区交界的边缘区域， 即切换区域， 同频 干扰最为严重。 本来小区边缘就可能是路损大的信号弱场， 再加上邻区同频 干扰， 无线信道条件更加恶化， SINR ( Signal-Interference-Noise-Ratio, 信干 噪比） 更低。 根据切换的基本原理和流程， 通常是终端已经到了新小区的覆 盖范围、新小区信号已经强过原小区的时候， 终端才上报测量报告给原小区， 然后终端再从原小区等待切换命令， 接收到切换命令后， 再向新小区进行切 换， 参见图 2。 在这个切换过程中， 第 1步和第 2步实际上是同频干扰最为 严重、 通信信道质量最为恶劣的时候。
由于原则上所有的信道资源都是基于共享调度的， 4G 的业务类型相比
3G有了很大简化。 4G只有 PS ( Packet Service, 数据业务）一种， 所以 4G 的无线空口信令也比 3G 简化很多， 无论是接入流程还是切换流程， 都可归 为 "RRC Connection" 的配置， 包括 "RRC Connection" 的建立、 重建和重配 置。 对于上述五种随机接入， A、 D、 E三种场景的随机接入对应 "RRC连接 建立请求" ， B场景的随机接入对应 "RRC连接重建请求" ， C场景的随机 接入对应 "RRC连接重配置完成" 。 另外， 由于 4G终端可自行检测邻区， 4G小区可不必象 3G那样下发邻区信息给终端。
虽然 4G信令相比 3G简化了很多， 但对于密集城区的蜂窝小区网络， 信 号混杂导致终端与小区间的频繁信令交互， 还是会给 4G 网络带来不少的信 令开销和同频干扰。 而且， 4G数据业务 "永远在线" 和 "突发性" 的特点也 容易增加终端和小区之间的信令交互， 出现业界俗称的 "信令风暴" 。
目前， 同频组网下蜂窝小区边缘切换区域的同频干扰、 信令开销、 资源 能源损耗、 业务性能（如上行吞吐量和下行吞吐量） ， 已经成为 3G、 4G同 频组网中公认的短板， 是这几年技术研究、 标准演进以及业界开发共同关注 的重点。 发明内容
本发明实施例提供一种终端接入方法、 系统和终端， 以解决信令开销大 的问题。
本发明实施例提供的一种终端接入方法， 包括：
终端从因特网服务器下载并存储包括小区相关信息的网络云图， 所述小 区相关信息包括小区的终端公用空口配置参数， 所述网络云图的终端公用空 口配置参数和 /或小区广播消息中包括用于智能接入的第一上行导频； 执行随机接入过程， 其中， 若所述终端存储的网络云图包括要接入小区 的小区相关信息， 且该小区相关信息有效， 则发送第一上行导频， 若终端存 储的网络云图不包括要接入小区的小区相关信息，或者该小区相关信息无效， 则发送用于非智能接入的第二上行导频；
执行参数配置过程， 其中， 若所述终端发送第一上行导频， 则不执行与 所述网络云图中终端公用空口配置参数相应的终端公用空口配置， 若所述终 端发送第二上行导频， 则执行与所述网络云图中终端公用空口配置参数相应 的终端公用空口配置。
本发明实施例提供的一种终端接入系统， 包括：
因特网服务器， 其设置为： 存储包括小区相关信息的网络云图， 所述小 区相关信息包括小区的终端公用空口配置参数， 所述网络云图的终端公用空 口配置参数和 /或小区广播消息中包括用于智能接入的第一上行导频，
终端的网络云图下载模块， 其设置为： 从因特网服务器下载并存储包括 小区相关信息网络云图；
终端的随机接入模块， 其设置为： 与小区交互执行随机接入过程， 其中， 若所述网络云图下载模块存储的网络云图包括要接入小区的小区相关信息， 且该小区相关信息有效， 则发送第一上行导频， 若所述网络云图下载模块存 储的网络云图不包括要接入小区的小区相关信息，或者该小区相关信息无效， 发送用于非智能接入的第二上行导频；
终端、 小区及核心网的参数配置模块， 其设置为： 执行无线空口参数配 置过程， 其中， 若终端发送第一上行导频， 则不执行与所述网络云图中终端 公用空口配置参数相应的终端公用空口配置， 若终端发送第二上行导频， 则 执行与所述网络云图中终端公用空口配置参数相应的终端公用空口配置。
本发明实施例还提供了另一种终端接入方法， 该方法包括：
核心网存储终端信息共享云图， 所述终端信息共享云图包括附着或曾附 着于网络的终端的信息；
所述小区接收终端发送的接入请求后， 查找核心网终端信息共享云图是 否有该终端的相关信息； 执行参数配置过程， 其中终端信息共享云图有该终端， 则不执行安全参 数配置， 终端信息共享云图没有该终端， 则执行安全参数配置；
信息变化时， 所述小区更新核心网存储的终端信息共享云图。
为解决上述技术问题， 本发明还提供了另一种终端接入系统， 该系统包 括：
核心网的共享云图存储模块， 其设置为： 存储终端信息共享云图， 其包 括附着或曾附着于网络的终端的相关信息； 根据所述终端信息更新消息更新 所述终端信息共享云图；
小区的终端识别模块， 其设置为： 在接收终端发送的接入请求后， 查找 核心网终端信息共享云图是否有该终端的相关信息；
核心网、 小区和终端的参数配置模块， 其设置为： 执行参数配置， 其中 若终端信息共享云图有该终端， 则不执行安全参数配置， 终端信息共享云图 没有该终端， 则执行安全参数配置；
小区的共享云图更新模块， 其设置为： 在所述终端信息有变化时向核心 网发送终端信息更新消息。
本发明实施例还提供了一种最优的终端接入方法， 终端从因特网服务器 下载包括小区相关信息的网络云图， 所述小区相关信息包括小区的终端公用 空口配置参数， 核心网存储终端信息共享云图， 其包括附着或曾附着于网络 的终端的相关信息， 该方法包括：
小区选取步骤， 终端根据测量结果选取要接入的小区；
随机接入步骤， 执行随机接入过程， 若终端已下载的网络云图符合智能 接入条件， 则随机接入过程后执行终端识别步骤， 若终端已下载的网络云图 不符合智能接入条件则随机接入过程后执行终端识别步骤或参数配置步骤； 终端识别步骤， 所述小区查找核心网终端信息共享云图是否有该终端的 相关信息， 所述终端信息共享云图包括附着或曾附着于网络的终端的信息； 参数配置步骤， 执行参数配置过程， 其中， 若共享云图中有该终端， 则 不执行安全参数配置过程， 若为符合智能接入条件， 则不执行与所述网络云 图中终端公用空口配置参数相应的无线空口公用参数配置； 云图更新步骤， 信息变化时， 所述终端更新自身存储的网络云图， 所述 'J、区更新核心网存储的终端信息共享云图。
本发明实施例提供了一种终端， 该终端包括：
网络云图下载模块， 其设置为： 从因特网服务器下载并存储包括小区相 关信息网络云图， 所述小区相关信息包括小区的终端公用空口配置参数， 所 述网络云图的终端公用空口配置参数和 /或小区广播消息中包括用于智能接 入的第一上行导频；
随机接入模块， 其设置为： 与小区交互执行随机接入过程， 其中， 若所 述网络云图下载模块存储的网络云图包括要接入小区的小区相关信息， 且该 小区相关信息有效， 则发送第一上行导频， 若所述网络云图下载模块存储的 网络云图不包括要接入小区的小区相关信息， 或者该小区相关信息无效， 则 发送用于非智能接入的第二上行导频；
参数配置模块， 其设置为： 执行无线空口参数配置过程， 其中， 若发送 第一上行导频， 则不执行与所述网络云图中终端公用空口配置参数相应的终 端公用空口配置， 若发送第二上行导频， 则执行与所述网络云图中终端公用 空口配置参数相应的终端公用空口配置。 本发明实施例还提供一种终端接入方法和终端， 以解决切换过程中同频 干扰严重的问题。
本发明实施例提供的一种终端接入方法， 包括：
小区选取步骤， 终端根据测量结果判断需要切换到新的小区， 则选取要 接入的新小区；
上行导频发送步骤， 所述终端发送上行导频；
接入请求发送步骤， 所述终端接收到网络侧发送的上行导频响应后， 发 送接入请求， 其中携带的发起接入原因为无线链路失败后发起初始接入。
本发明实施例还提供了一种终端， 所述终端包括：
小区选取模块， 其设置为： 根据测量结果需要切换到新的小区时， 选取 要接入的新小区；
上行导频发送模块， 其设置为： 发送上行导频； 接入请求发送模块， 其设置为： 在接收到网络侧发送的上行导频响应后， 发送接入请求， 其中携带的发起接入原因为无线链路失败后发起初始接入。
本发明实施例终端接入方法利用因特网服务器或核心网预先存储需要在 接入过程中需要信令交互实现的配置参数， 可以有效避免终端进行过多的信 令交互， 减少信令开销。 针对切换场景， 本发明实施例通过直接选取要切换 的小区， 并直接向目标小区发起接入过程， 避免了与原小区交互时干扰严重 的阶段。
附图概述
图 1和图 2分别是第三代移动通信系统 3G和第四代移动通信系统 4G的 无线空口接入流程和无线空口切换流程的示意图；
图 3是本发明终端接入方法实施例 1的示意图；
图 4是本发明终端接入方法实施例 2的示意图；
图 5是本发明终端接入方法实施例 3的示意图；
图 6是本发明终端接入方法实施例 4的示意图；
图 7是本发明终端接入方法实施例 5的示意图；
图 8是图 7中小区选取步骤的流程示意图；
图 9是图 7中随机接入步骤的流程示意图；
图 10是智能接入条件判断的流程示意图；
图 11、 12是本发明实施例中支持智能接入的终端在接入场景和切换场景 下最简化的随机接入流程图；
图 13是图 7中终端识别步骤的示意图；
图 14是图 7中参数配置步骤的示意图；
图 15是图 7中云图更新步骤的示意图；
图 16是本发明实施例方法所涉及的四大网元的示意图；
图 17-20、 图 22为本发明终端接入系统各实施例的模块结构示意图； 图 21为本发明终端的模块结构示意图。
本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。
本发明实施例中因特网服务器存储包括小区相关信息的网络云图， 所述 小区相关信息包括小区的终端公用空口配置参数， 当终端根据其存储的网络 云图要接入某小区且已存储有效的该小区相关信息时， 可省略接入过程中的 公用参数配置过程， 简化接入流程。 实施例 1 本发明终端接入方法实施例 1 中， 终端从因特网服务器下载网络云图， 较佳地， 终端仅根据预定策略比如周期或事件触发从因特网服务器下载网络 云图， 终端可根据其所处位置下载某个或某几个小区的相关信息以更新其自 身的网络云图， 或因特网服务器中的网络云图划分为若干个对应不同区域的 子网络云图， 终端可根据其所处位置下载相应的子网络云图以更新其自身的 网络云图， 如图 3所示， 该方法实施例 1包括：
步骤 301 : 终端从因特网服务器下载并存储包括小区相关信息的网络云 图， 所述小区相关信息包括小区的终端公用空口配置参数， 所述网络云图的 终端公用空口配置参数和 /或小区广播消息中包括用于智能接入的第一上行 导频；
步骤 302: 执行随机接入过程， 其中， 若所述终端存储的网络云图包括 要接入小区的小区相关信息， 且该小区相关信息有效， 则发送第一上行导频， 若所述终端存储的网络云图不包括要接入小区的小区相关信息， 或者该小区 相关信息无效， 发送用于非智能接入的第二上行导频；
本发明实施例中， 终端要接入的小区是所述终端根据测量结果选取的。 优选地， 可以釆用以下方法确定终端存储的小区相关信息的有效性： 所述网络云图还包括小区相关信息对应的信息更新时间， 所述小区相关 信息还包括用于标识小区的小区标识信息， 小区广播消息中携带网络云图中 小区相关信息的信息更新时间， 执行随机接入过程前， 该方法还包括： 所述终端接收小区广播消息并根据小区标识信息判断是否已存储要接入 小区的小区相关信息； 若已存储， 则判断小区广播消息中的信息更新时间与 所述终端存储的所述小区相关信息的信息更新时间是否一致， 若一致， 则判 断有效， 若不一致， 则判断无效。
步骤 303 : 执行参数配置过程， 其中， 若所述终端发送第一上行导频， 则不执行与所述网络云图中终端公用空口配置参数相应的终端公用空口配 置， 若所述终端发送第二上行导频， 则执行与所述网络云图中终端公用空口 配置参数相应的终端公用空口配置。
所述参数配置过程除终端公用空口配置外， 还包括终端专用参数配置、 核心网和终端之间的安全参数配置 （包括但不限于鉴权、 安全模式、 完整性 保护、 加解密算法） 以及小区和核心网之间的参数配置 （包括但不限于： 接 入小区通过核心网获得并继承终端原有的承载配置； 若接入小区与终端在终 端信息共享云图上的当前所属小区不同， 即接入小区为新小区， 则接入小区 还需通过核心网从原小区转移终端的数据传输关系） 。
上述实施例 1 中， 网络云图中保存小区的终端公用空口配置参数可避免 终端接入后， 因执行相应的终端公用空口配置参数而造成的时延， 最优的， 网络云图中保存所有终端公用空口配置参数， 即现有小区广播消息中的携带 终端公用空口配置参数（本发明中也称该部分参数为第一空口配置参数） 以 及现有流程中终端与小区交互后获取的其他终端公用空口配置参数（为了以 示区别， 本发明中将该部分参数称为第二空口配置参数） ； 在判断所述终端 存储的网络云图包括要接入小区的小区相关信息，且该小区相关信息有效（下 文也称这种情形为符合智能接入条件）后， 终端可不再读取小区广播消息中 的第二空口配置参数， 以最大可能地减少时延； 较佳的， 网络云图中仅保存第二空口配置参数， 现有小区广播消息中仍 携带第一空口配置参数， 在判断所述终端存储的网络云图包括要接入小区的 小区相关信息， 且该小区相关信息有效后， 终端读取小区广播消息中的第一 空口配置参数完成相应的参数配置， 但不需要在执行与第二空口配置参数相 应的相应参数配置过程。 可理解地， 小区的所有终端公用配置参数也可釆用其他方式在小区广播 消息和网络云图之间进行划分， 无论如何划分， 在判断所述终端存储的网络 云图包括要接入小区的小区相关信息， 且该小区相关信息有效后， 终端都不 再需要执行与网络云图中存储的终端公用空口配置参数相应的参数配置过 程。
实施例 2
本发明终端接入方法实施例 2中， 终端根据预定策略从因特网服务器下 载网络云图， 同时结合公用空口配置和小区广播消息对其网络云图进行及时 更新， 如图 4所示， 该方法实施例 2包括：
步骤 401 : 终端根据预定策略从因特网服务器下载并存储包括小区相关 信息的网络云图， 所述小区相关信息包括小区的终端公用空口配置参数， 所 述网络云图的终端公用空口配置参数和 /或小区广播消息中包括用于智能接 入的第一上行导频；
步骤 402: 执行随机接入过程， 其中， 若所述终端存储的网络云图包括 要接入小区的小区相关信息， 且该小区相关信息有效， 则发送第一上行导频， 否则发送用于非智能接入的第二上行导频；
优选地， 可以釆用以下方法确定终端存储的小区相关信息的有效性： 所述网络云图还包括小区相关信息对应的信息更新时间， 所述小区相关 信息还包括用于标识小区的小区标识信息， 小区广播消息中携带网络云图中 小区相关信息的信息更新时间， 执行随机接入过程前， 该方法还包括：
所述终端接收小区广播消息并根据小区标识信息判断是否已存储要接入 小区的小区相关信息； 若已存储， 则判断小区广播消息中的信息更新时间与 所述终端存储的所述小区相关信息的信息更新时间是否一致， 若一致， 则判 断有效， 若不一致， 则判断无效。
步骤 403 : 执行参数配置过程， 其中， 若终端发送第一上行导频， 则不 执行与所述网络云图中终端公用空口配置参数相应的终端公用空口配置， 若 终端发送第二上行导频， 则执行与所述网络云图中终端公用空口配置参数相 应的终端公用空口配置。 步骤 404: 所述终端根据终端公用空口配置结果更新自身存储的网络云 图中该小区的小区相关信息， 并根据接收的小区广播消息中的信息更新时间 更新其存储的信息更新时间。
与实施例 1相比， 该实施例 2中， 在执行公用空口配置后， 终端及时更 新其存储的网络云图， 在终端与小区中断通信， 且根据预定策略未能及时连 接因特网服务器更新网络云图的情况下， 可有效避免再次接入时仍需要执行 公用空口配置的过程。
为了缩短信令配置过程， 本发明实施例还提供了另一思路， 即核心网存 储终端信息共享云图， 其包括附着或曾附着于网络的终端的相关信息， 小区 根据核心网存储的终端信息共享云图判断接入的终端是否符合免检条件， 若 符合可不执行安全配置过程， 缩短接入过程， 以下以实施例 3为例进行说明。
实施例 3
本发明终端接入方法实施例 3中， 核心网存储终端信息共享云图， 其包 括附着或曾附着于网络的终端的相关信息， 参数配置过程中， 若小区判断所 述终端信息共享云图中有所述终端的相关信息，则不执行安全参数配置过程， 若小区判断所述终端信息共享云图中没有所述终端的相关信息， 则执行安全 参数配置过程， 具体地如图 5所示， 该方法实施例 3包括：
步骤 501 : 核心网存储终端信息共享云图， 所述终端信息共享云图包括 附着或曾附着于网络的终端的信息；
步骤 502: 所述小区接收终端发送的接入请求后， 查找核心网终端信息 共享云图是否有该终端的相关信息；
对于接入的终端， 小区通过核心网的终端信息共享云图查找与接入终端 发的 MSG3里相匹配的终端网络标识， 如果在查找定时器超时前查找到， 那 么就可以初步判定此终端是网络合法用户， 应予以接纳， 然后， 再基于地理 位置就近原则， 在终端信息共享云图里找到此终端当前所属小区， 即原小区。 如果发现原小区与新小区一致， 表明此终端没有变更小区， 仍然在原小区作 接入。 如果发现原小区与新小区不一致， 表明此终端变更了小区， 或从原小 区往新小区作切换、或在原小区无线链路失败后往新小区发 RRC连接重建请 求、 或在原小区去附着后往新小区发 RRC连接建立请求。 对此， 需要新小区 通过核心网和原小区进行协商， 继承终端在原小区的承载配置信息， 以及完 成终端数据传输关系的转移。
步骤 503 : 执行参数配置过程， 其中终端信息共享云图有该终端， 则不 执行安全参数配置， 终端信息共享云图没有该终端， 则执行安全参数配置； 如果存在与终端个体相关的一些专用配置不能通过继承之前的配置或不 能通过默认规则来获得， 如 4G的 PUCCH ( Physical Uplink Control Channel, 物理上行控制信道）及相应的 CQI/PMI/RI/ACK/NACK的配置、 SRS( Sounding Reference Signal, 探测参考信号） 的配置， 则需要小区在 MSG3后对接入终 端再进行一次信令配置， 但这个信令开销相对传统的全部都进行配置的信令 要小的多。对于 SPS ( Semi-Packet Service,半静态数据业务 )、具有特定 QOS ( Quality of Service, 业务质量）要求的业务的专用承载的新增、修改、 释放， 以及终端的 PDSCH ( Physical Downlink Shared Channel , 物理下行共享信道） 的 TM ( Transfer Mode, 传输模式）切换， 也需要终端所属的小区发送信令 进行配置。
步骤 504: 信息变化时， 所述小区更新核心网存储的终端信息共享云图。 较佳地， 参数配置过程后， 若所述终端信息有变化， 小区发送终端信息 更新消息给核心网； 核心网才艮据该终端信息更新消息更新所述终端信息共享 云图。
更新终端信息共享云图包括新建、 修改终端相关信息。 具体地， 在终端 成功接入到小区后， 小区需去核心网的终端信息共享云图里查找此终端， 如 果找到则更新相关信息， 如果未找到， 则新建此终端及相关信息。
所述终端信息有变化包括以下情形：
所述小区判断与所述终端脱离通信时， 发送去激活消息给所述核心网的 终端信息共享云图；
所述终端信息共享云图启动定时器， 若定时器超时且未收到终端信息更 新消息， 则所述终端信息共享云图删除该去激活的终端的相关信息。
实施例 4
本发明实施例还提供了一种终端接入方法， 该方法着重针对现有小区切 换流程进行改进， 如 6图所示， 该方法包括：
步骤 601 : 小区选取步骤， 终端根据测量结果判断需要切换到新的小区， 则选取要接入的新小区；
步骤 602: 上行导频发送步骤， 所述终端发送上行导频；
步骤 603: 接入请求发送步骤， 所述终端接收到网络侧发送的上行导频 响应后， 发送接入请求， 其中携带的发起接入原因为无线链路失败后发起初 始接入。
现有的切换技术是终端已经移动到新小区的覆盖范围， 即新小区的覆盖 信号强度要好于原小区的覆盖信号强度， 才开始上发测量报告给原小区， 然 后原小区下发切换命令给终端， 在这个过程中， 终端一直是与更弱的原小区 进行通信， 这样就一直会受更强的新小区信号的干扰， 相较于现有技术， 终 端在切换场景下， 直接根据测量结果与要接入的新小区交互， 避开了传统切 换流程中信道条件最恶劣的阶段， 降低了切换失败导致通信中断的风险， 且 在接入请求中携带无线链路失败后发起的初始接入的接入原因， 小区接收到 该接入请求后， 实现与现有接入流程的顺利衔接。
另， 本发明实施例方法兼容了小区内接入和小区间切换， 将小区内接入 和小区间切换两种信令流程融合， 简化了信令。
较佳地， 若终端发送第一上行导频， 则接入请求中携带的接入原因为初 始接入（对应于背景技术中的 A场景）、无线链路失败后发起的初始接入（对 应于背景技术中的 B场景） 、 切换时进行随机接入（对应于背景技术中的 C 场景） 、 连接态下的下行数据到达（对应于背景技术中的 D场景）或连接态 下的上行数据到达（对应于背景技术中的 E场景） ， 接入请求的具体消息与 现有技术相同， 即八、 D、 E场景下， 所述接入请求为 "RRC连接建立请求" ， B场景下， 接入请求为 "RRC连接重建请求" ， C场景下， 接入请求 "RRC 连接重配置完成" ； 若终端发送第二上行导频， 则接入请求中携带的接入原 因为 A、 B、 D、 E, 需要说明的是， 终端切换到新小区时， 携带的接入原因 修改为无线链路失败后发起的初始接入， 即接入原因为： 即 A、 D、 E场景下， 所述接入请求为 "RRC连接建立请求" ， B、 C场景下， 接入请求 "为 RRC 连接重建请求" 。
可选地， 所述小区广播消息还携带小区运行状态信息， 若所述小区运行 状态信息表明当前小区为拥塞状态， 则所述终端重新选择要接入的小区以执 行随机接入过程。
实施例 5
较佳地， 该终端接入方法中同时釆用网络云图和终端信息共享云图简化 参数配置过程。
该实施例 5中， 因特网服务器存储包括小区相关信息的网络云图， 所述 小区相关信息包括小区的终端公用空口配置参数， 终端根据预定策略从因特 网服务器下载包括小区相关信息的网络云图，核心网存储终端信息共享云图， 其包括附着或曾附着于网络的终端的相关信息， 如图 7所示， 该方法包括： 步骤 701 : 小区选取步骤， 终端根据测量结果选取要接入的小区； 如图 8所示， 该小区选取步骤包括：
步骤 7011 : 终端基于测量选取一个小区；
步骤 7012: 接收该小区广播消息， 读取其中的小区状态信息；
步骤 7013: 判断小区是否拥塞，若拥塞， 则转执行步骤 7011 , 若不拥塞， 则执行步骤 702, 即随机接入步骤。
步骤 702: 随机接入步骤， 执行随机接入过程， 若终端已下载的网络云 图符合智能接入条件， 则随机接入过程后执行终端识别步骤， 若终端已下载 的网络云图不符合智能接入条件， 则随机接入过程后执行终端识别步骤或参 数配置步骤；
如图 9所示， 随机接入步骤包括：
步骤 7021： 为终端发送上行导频 MSG1； 该步骤中， 若符合智能接入条件， 则随机接入过程中发送智能接入上行 导频 （也称为第一上行导频） , 若不符合只能接入条件， 则发送非智能接入 上行导频（也称为第二上行导频） 。
更具体地， 如图 10所示， 符合智能接入条件的判断过程包括：
步骤 1001 : 判断是否存储有网络云图， 若是， 则执行步骤 1002, 若否， 则判断为不符合智能接入条件；
如果 GPS失效， 终端可基于对服务小区和邻小区的测量， 与网络云图上 的小区信息进行匹配， 并结合终端之前的历史信息， 综合判断当前所处网络 与网络云图的关联关系。 如果无法判断， 则认定所存储的网络云图暂时失效， 不能满足智能接入的条件。
步骤 1002: 判断网络云图是否包含当前区域， 若是， 则执行步骤 1003 , 若否， 则判断为不符合智能接入条件；
步骤 1003: 判断当前区域是否有该小区信息， 若是， 则执行步骤 1004, 若否， 则判断为不符合智能接入条件；
步骤 1004: 读取该该小区的信息更新时间；
步骤 1005: 判断存储的该小区的信息更新时间是否与小区广播消息上该 小区的信息更新时间的一致， 若是， 则判断为符合智能接入条件， 若否， 则 判断为不符合智能接入条件。
步骤 7022: 小区接收 MSG1后发送上行导频响应 MSG2;
步骤 7023：终端发送接入请求 MSG3，相当于 4G里传统接入流程的 "RRC 连接请求" 、 或 "RRC连接重建请求" 、 或传统切换流程的 "RRC连接重配 完成" ， 里面携带了接入原因 （A/B/C/D/E 中的一种）和终端之前附着网络 时分配的有效网络标识。 如果终端之前没有附着到网络上（例如刚开机） ， 没有网络标识， 则终端发的 MSG3里携带小区通过 MSG2给终端分配的临时 网络标识， 例如 C-RNTI ( Cell-Radio Network Temporary Indicator , 小区 -无线 网络临时标识） 。
图 11和图 12是本发明实施例中支持智能接入的终端在接入场景和切换 场景下最简化的随机接入流程图。 相比图 1的传统接入流程图和图 2的传统 切换流程图， 可以看出新流程有效简化了无线空口信令， 减少了信令开销。
步骤 703 : 终端识别步骤， 所述小区查找核心网终端信息共享云图是否 有该终端的相关信息， 所述终端信息共享云图包括附着或曾附着于网络的终 端的信息；
如图 13所示， 对以智能接入上行导频接入的终端， 小区必须去核心网的 终端信息共享云图里查找该终端，如果在预设的查找定时器超时之前找到了， 则将此终端判定为免检智能终端， 如果在预设的查找定时器超时之前没有找 到， 则判定为待检智能终端。
对以非智能接入上行导频接入的终端， 小区可以去核心网的终端信息共 享云图里查找该终端， 如果在预设的查找定时器超时之前找到了， 则将此终 端判定为免检普通终端， 如果在预设的查找定时器超时之前没有找到， 则判 定为待检普通终端。 或者， 小区和核心网也可以根据现有的机制来处理以非 智能接入上行导频接入的终端， 即以传统方式处理传统的接入和切换。
步骤 704: 参数配置步骤， 执行参数配置过程。
以下以网络云图中包括所有终端公用空口配置参数为例， 对参数配置进 行说明， 一般来说， 参数配置包括以下几个方面：
第一参数 ( SS1_1 ) 配置： 无线空口公用参数配置；
第二参数 ( SS1_2 ) 配置： 无线空口专用参数配置；
第二参数（SS1— 2 )即专用参数， 代表小区里终端的个性化配置， 不同终 端的专用参数， 有些可配置为一样， 有些则必须不一样， 在移动通信技术的 资源共享的发展趋势下， 这种个性化配置越来越少， 即 SS1— 2在 SS1中所占 的比例也越来越小；
第三参数（SS2 )配置： 核心网和终端之间的安全参数配置； 包括但不限 于鉴权、 安全模式、 完整性保护、 加解密算法等；
第四参数（SS4 ) 配置， 小区和核心网之间的参数配置： 包括但不限于， 接入小区通过核心网获得并继承终端原有的承载配置； 若接入小区与终端在 终端信息共享云图上的当前所属小区不同， 即接入小区为新小区， 则接入小 区还需通过核心网从原小区转移终端的数据传输关系；
其中， 若共享云图中有该终端， 则表明该终端为免检终端， 不执行安全 参数配置过程， 若共享云图中没有该终端， 则表明该终端为待检终端， 需要 执行安全参数配置过程， 若符合智能接入条件， 则不执行与所述网络云图中 终端公用空口配置参数相应的无线空口公用参数配置， 若所述终端不符合智 能接入条件， 需要执行与所述网络云图中终端公用空口配置参数相应的无线 空口公用参数配置。 如图 14所示， 可组合为以下四种情形：
( 1 )免检智能终端， 即为免检终端且符合智能接入条件， 参数配置只包 括 SS1— 2和 SS3 ;
( 2 )待检智能终端， 即为待检终端但符合智能接入条件， 参数配置包括
SS1— 2、 SS2和 SS3 ;
( 3 )免检普通终端， 即为免检终端但不符合智能接入条件， 参数配置只 包括 SS1和 SS3 ;
( 4 )待检普通终端， 即为待检终端但不符合智能接入条件， 参数配置包 括 SS1、 SS2和 SS3。
步骤 705 : 云图更新步骤， 信息变化时， 所述终端更新自身存储的网络 云图， 所述小区更新核心网存储的终端信息共享云图。
如图 15所示，云图更新包括终端更新自身存储器上的网络云图和小区更 新核心网上的终端信息共享云图两部分。 其中终端更新自身存储网络云图上 接入小区的相关信息有以下两种方式：
方式一： 如果终端在接入的参数配置阶段还配置了公用参数 SS1— 1 , 则 此终端需将参数配置阶段获取的公用参数 SS1— 1和读取小区广播消息获取的 公用参数 SS0一起， 更新至终端存储网络云图里该小区的无线空口配置参数 上， 相应的， 该小区的信息更新时间修改为小区广播里的信息更新时间； 方式二： 终端接入因特网， 下载并更新网络云图上接入小区的相关信息。 小区更新核心网上终端信息共享云图里终端的相关信息包括了修改或新 建两种操作。 如果小区在终端信息共享云图里找到该接入终端， 则更新为修 改操作， 如果没有找到， 则更新为新建操作。 而终端信息共享云图里终端信 息的删除操作， 是在终端存活期定时器启动并超时后主动发起。
以下对本发明实施例中的网络云图的最佳方式进行详细说明：
本发明实施例所述的网络云图是一张包含移动通信网络中各小区相关信 息和相应小区相关信息的信息更新时间的电子地图。
信息更新时间的时间粒度可以是天、 小时、 甚至是分钟。 如果网络云图 中的信息是按天周期更新， 例如每天 0点更新， 则信息更新时间粒度为天。 如果是按照事件触发更新， 例如某个小区的信息发生了变化， 并通知同步到 存储网络云图的因特网服务器， 则信息更新时间粒度可以为分钟； 如果小区 不支持智能接入， 则信息更新时间为默认的值， 例如 0;
小区相关信息包括：
1、用于标识小区的小区标识信息。 该小区标识信息的意义在于区分不同 的小区， 具体的可为： 3G中用于区分小区的扰码， 4G中用于区分小区的 PCI
( Physical Cell Identifier, 物理小区标识） ， 可选地， 该小区标识信息也可包 括地理位置信息， 具体的地理位置信息可为小区的经纬度， 根据需要， 可以 加上海拔高度， 从平面地图扩展至立体地图；
2、无线空口配置参数： 小区配置给终端的各类公用参数， 包括广播消息、 接入过程和切换过程中小区配置给终端的各类公用参数一一公用参数中邻区 信息可以只收录个体偏移不为 0的邻区。 对于 4G, 无线空口配置参数包括： SI (系统消息） 、 SecurityConfig (安全配置） 、 UE TimersAndConstants ( UE 的定时器和计数器） 、 RadioResourceConfigCommon (无线资源公共配置） 、 RadioResourceConfigDedicated (无线资源专用配置 )中与终端个体无关配置、 MeasConfig (测量配置） ；
3、 扩展字段。 用于网络云图信息的丰富和扩展， 例如增加小区的覆盖方 向；
网络云图是一个移动通信蜂窝网络小区信息的数据库，存储在因特网（公 用外网） 的服务器上， 供终端自由下载、 存储和使用。 终端不限于通过本发 明所述的移动通信网络连接到服务器去下载网络云图， 而是可以通过有线、 无线等任意网络方式连接到服务器去下载网络云图。
蜂窝网络里的各小区， 当相关信息发生变化后， 按照约定的机制， 例如 周期触发更新或事件触发更新， 通过核心网， 将最新信息更新至因特网上的 网络云图。
终端可以从因特网上的网络云图获取并更新小区相关信息， 也可以通过 读取接入小区的广播消息以及接入过程中小区配置给终端的无线空口参数来 获取该小区的最新信息， 并更新终端存储的网络云图上该小区相关信息 （如 无线空口配置参数）和信息更新时间。
网络云图各小区的无线空口配置参数是供接入此小区的所有终端公用 的， 即与终端个体无关， 因此本发明更适用于下一代移动通信系统和需经部 分改造的 4G网络和 3G HSPA+网络里。 因为在这些网络里， 小区里的信道资 源基本都是共享调度的， 终端之间的无线空口配置参数基本无差异。
由于不同小区的无线空口配置参数也大同小异， 可以标准化形成几套典 型的配置模板并供各小区索引。 这样可以大大精简存储的信息量， 方便存储 网络云图的因特网服务器和终端对网络云图的存储、 传输和处理。
因特网上的网络云图的控制权为相关网络的运营商， 其他人无权进行新 建、 删除和修改。 终端上的网络云图也不能人为随意修改， 而须按照本发明 所述方式进行更新， 以免出现信息不准确， 导致通信无法进行的情况。
在移动通信网络建设初期， 网络还处于调整优化阶段， 网络云图更新会 比较频繁些， 在网络逐步成熟后， 网络云图也会随之稳定下来。
以下对本发明实施例中的终端信息共享云图的最佳方式进行详细说明： 本发明实施例所述的终端信息共享云图是一张包含移动通信网络中附着 到网络里各终端相关信息的电子地图， 它是存储于本发明所述移动通信网络 所归属的核心网 （专用内网）上的一个信息数据库， 相关信息包括：
( 1 )终端附着到网络里所分配的网络标识， 即 UE-Context (终端上下文 信息） ， 例如 GUTI ( Globally Unique Temporary Identifier, 全球唯一临时标 示） ；
( 2 )终端当前所属小区的网络标识。 例如 3G小区的 4尤码， 4G小区的 PCI;
( 3 )终端当前所属小区的地理位置。它与网络云图中小区地理信息一致；
( 4 )存活期定时器。 如果当前小区发现此终端因为 "发起去附着" 或者 因为 "无线链路失败" 或者因为 "切换" 而脱离与当前小区的通信时， 当前 小区将发送 "去激活" 的消息给终端信息共享云图。 当终端信息共享云图接 收到当前小区发的 "去激活" 消息时， 就启动此终端的存活期定时器， 在定 时器超时前， 如果收到新小区 （包括当前小区）发来的此终端信息更新， 则 更新此终端相关信息， 此定时器也停止计时并归零， 在定时器超时， 没有收 到新小区发来的此终端信息更新， 终端共享云图删除此终端及其相关信息。 存活期定时器设置可以根据终端的通信业务特点、 安全性考虑以及跟踪区更 新等因素综合考虑， 例如可以设置为 1小时或者 1天。
( 5 )扩展字段。 用于终端信息共享云图信息的丰富和扩展。 例如增加终 端的能力， 终端 IMEI ( International Mobile Equipment Identity, 是国际移动设 备身份码 ) 、 IMSI ( International Mobile Subscriber Identification Number, 国 际移动用户识别码）等信息；
为了支持大容量用户， 网络可能会分配重复的终端网络标识给不同小区 里的不同终端， 所以， 在终端信息共享云图里添加小区信息可以用于区分这 些终端。
当终端的接入小区发生变更时， 新小区须到核心网的终端信息共享云图 查找此终端， 如果找到， 并判定为同一个终端 （可利用新小区和原小区的地 理信息来进行判断） ， 就更新相关信息， 如果没有找到， 就新建此终端的相 关信息。
终端信息共享云图的控制权也为网络运营商， 其他人无权进行新建、 删 除和爹改。
本发明实施例所述的终端， 需要满足和支持如下功能：
( 1 ) 自主下载、 存储、 更新、 管理和应用网络云图。 终端可不限时间、 不限地点、 不限网络、 不限方式地接入放置网络云图的因特网服务器， 根据 终端的存储能力、 地理活动范围来下载一定大小的网络云图。 例如下载当前 位置所在一片区域的网络云图， 下载经常活动区域的网络云图， 下载当前所 乘坐高铁专网的网络云图， 等等。 下载信息以小区为单位。 当更新小区信息 时， 如果终端发现自身存储网络云图上小区的信息更新时间并不比因特网服 务器上网络云图中相应小区的信息更新时间早， 则此小区信息保持不变， 即 不作更新。 终端自主决定更新时间， 例如可以周期更新网络云图， 也可结合 移动情况、 服务小区情况等， 自行决定是否更新。 终端可以自主删除长期不 用的网络云图。
( 2 )兼容支持智能接入和传统的接入与切换。 智能接入就是当终端判定 自身存储网络云图中有接入小区的有效信息时使用从接入小区里专门划分出 的一部分上行导频 （这里定义为智能接入上行导频）发起的接入， 而传统的 接入和切换就是当终端判定自身存储网络云图中没有接入小区的有效信息时 使用除智能接入上行导频外的其他上行导频（这里定义为非智能接入上行导 频）发起的接入。 对于后者， 终端在接入小区后， 需要结合小区广播消息和 接入过程中小区配置给终端的无线空口参数， 更新自身存储网络云图上接入 小区的小区相关信息和信息更新时间， 其中信息更新时间就更新为小区广播 消息里的信息更新时间。
( 3 )在智能接入的切换场景下， 即终端在持续测量中发现满足小区切换 条件后， 终端无需向原小区发送测量报告和从原小区接收切换命令， 而是直 接在新小区发起接入原因为 C "切换时进行随机接入" 的智能接入。 这样就 避开了传统切换流程中信道条件最恶劣的阶段， 即图 2的第 1步和第 2步， 降低了切换失败导致通信中断的风险。
( 4 )在传统的切换场景下， 支持智能接入的终端， 也不再向原小区发送 测量报告和从原小区接收切换命令，而是直接在新小区发起接入原因为 B "无 线链路失败后发起的初始接入" （注意不是 C "切换时进行随机接入" ) 的 传统接入， 即 RRC连接重建请求， 这样也避开了图 2第 1步和第 2步所示的 两个信道条件最恶劣的阶段。
( 5 )如果 GPS失效， 终端可基于对服务小区和邻小区的测量， 与网络 云图上的小区信息进行匹配， 并结合终端之前的历史信息， 综合判断当前所 处网络与网络云图的关联关系。 如果无法判断， 则认定所存储的网络云图暂 时失效， 不能满足智能接入的条件。
按照本发明实施例中网络云图的设计， 一个小区的信息量不超过 lOKBits, 1000个基站下 3000个小区 （每个基站有 3个扇区） 的信息总量也 不过 30MBits。 由于大部分小区的无线空口配置参数都一致， 可以标准化形 成几套典型的配置模板并供各小区索引， 所以实际的信息总量要少的多。 相 对目前及以后终端的存储能力而言， 存储这些信息对终端完全没有问题。
终端的处理能力设计要求之一就是能够支持峰值流量的数据传输 , 但是 实际应用中， 很少时间会出现这种情况， 在接入过程中更是不会出现这种情 况， 终端有足够的处理能力冗余来完成智能接入相关的处理。
本发明实施例所述的小区， 较佳地满足和支持如下功能：
( 1 )在广播消息的扩展或保留字段里增加一个 "信息更新时间" ， 与网 络云图上小区信息中的 "信息更新时间" 格式一致。 如果无此字段或者字段 取值为默认的 0 , 则表明此小区不支持智能接入；
( 2 )为兼容智能接入和传统的接入与切换， 小区需要将随机接入的上行 导频资源按一定规则进行分类， 一部分用于智能接入， 这里定义为智能接入 上行导频， 另外的则可以再区分用于传统的接入和切换， 这里统称为非智能 接入上行导频。 为此， 在广播消息的扩展或保留字段里增加一个 "智能接入 上行导频" ， 而广播消息中用于传统的接入和切换的上行导频字段则继续保 留， 只是导频资源相对减少了。
( 3 )当小区的相关信息发生变化时， 小区按照约定的机制对因特网服务 器上的网络云图进行更新， 例如周期触发更新或事件触发更新；
完整的终端接入流程如下：
步骤 1201 : 支持智能接入的终端， 通过信号测量， 发现并选取一个最佳 小区；
步骤 1202: 读取此小区的广播消息；
步骤 1203 : 终端通过小区广播消息确认该小区是否拥塞， 如果拥塞， 回 到第 1步， 重新选取一个新小区， 如果不拥塞， 进入下一步；
步骤 1204: 终端搜索自身存储器， 依次确认： 是否存储有有效的网络云 图、 网络云图是否包含当前区域、 当前区域是否有该小区信息、 小区信息中 的信息更新时间是否与小区广播消息上的一致。 如果上述所有判断都为是， 则判定终端满足智能接入此小区的条件，如果上述所有判断只要有一项为否， 则判定终端不满足智能接入此小区的条件， 进入下一步；
步骤 1205: 终端向小区发送 MSG1 , 若满足智能接入条件， 则 MSG1为 智能接入上行导频， 若不满足智能接入条件， MSG1为非智能接入上行导频； 步骤 1206: 小区向终端发 MSG2;
步骤 1207: 终端向小区发 MSG3 , 接入原因根据实际真实情况而定， 满 足智能接入条件时， 接入原因涵盖 A/B/C/D/E, 不满足智能接入条件时， 接 入原因涵盖 A/B/D/E;
步骤 1208: 小区去核心网的终端信息共享云图里查找该终端， 如果在预 设的查找定时器超时之前找到， 满足智能接入条件时， 则将此终端判定为免 检智能终端， 不满足智能接入条件时， 则将此终端判定免检普通终端， 如果 在预设的查找定时器超时之前未找到， 满足智能接入条件时， 则将此终端判 定为待检智能终端， 不满足智能接入条件时， 则将此终端判定待检普通终端， 进入下一步；
步骤 1209: 参数配置， 其中， 若为免检智能终端， 则小区和终端之间完 成 SS1— 2的专用参数配置， 小区和核心网之间完成 SS3的参数配置； 若为待 检智能终端， 则小区和终端之间完成 SS1— 2的专用参数配置， 核心网和终端 之间完成 SS2的参数配置， 小区和核心网之间完成 SS3的参数配置； 若为免 检普通终端， 则小区和终端之间完成 SS1 (包括公用参数 SS1— 2和专用参数 SS1— 2 )的参数配置， 小区和核心网之间完成 SS3的参数配置； 若为待检普通 终端， 则小区和终端之间完成 SS1 (包括公用参数 SS1— 2和专用参数 SS1— 2 ) 的参数配置， 核心网和终端之间完成 SS2的参数配置， 小区和核心网之间完 成 SS3的参数配置；
步骤 1210: 如果相关信息有变化， 终端需要去更新自身存储的网络云图 上此小区的相关信息， 小区需要去更新终端信息共享云图上此终端的相关信 息； 图 16为本发明实施例方法所涉及的四大网元的示意图， 包括 "支持智能 接入的移动通信蜂窝网络的小区" 、 "支持智能接入的终端" 、 "内含终端 信息共享云图的核心网" 、 "内含网络云图的因特网" 四大网元。
对应于前述方法实施例 1、 2, 本发明实施例提供一种终端接入系统， 如 图 17所示， 该系统包括：
因特网服务器， 设置为： 存储包括小区相关信息的网络云图， 所述小区 相关信息包括小区的终端公用空口配置参数， 所述网络云图的终端公用空口 配置参数和 /或小区广播消息中包括用于智能接入的第一上行导频；
终端的网络云图下载模块， 设置为： 根据预定策略从因特网服务器下载 并存储包括小区相关信息网络云图，
终端的随机接入模块， 设置为： 与小区交互执行随机接入过程， 其中， 若所述网络云图下载模块存储的网络云图包括要接入小区的小区相关信息， 且该小区相关信息有效， 则发送第一上行导频， 若所述网络云图下载模块存 储的网络云图不包括要接入小区的小区相关信息， 或该小区相关信息无效， 则发送用于非智能接入的第二上行导频；
终端、 小区及核心网的参数配置模块， 设置为： 执行无线空口参数配置 过程， 其中， 若终端发送第一上行导频， 则不执行与所述网络云图中终端公 用空口配置参数相应的终端公用空口配置， 若终端发送第二上行导频， 则执 行与所述网络云图中终端公用空口配置参数相应的终端公用空口配置。
较佳地， 所述网络云图还包括小区相关信息对应的信息更新时间， 所述 小区相关信息还包括用于标识小区的小区标识信息， 小区广播消息中携带网 络云图中小区相关信息的信息更新时间， 如图 18所示， 在本发明终端接入系 统的另一实施例中， 相对于图 17所示的系统， 该系统还包括：
所述终端的有效性判断模块， 执行随机接入前， 用于接收小区广播消息 并根据所述小区标识信息判断是否已存储要接入小区的小区相关信息； 判断 已存储时， 还用于判断小区广播消息中的信息更新时间与已存储所述小区相 关信息的信息更新时间是否一致， 若一致， 则判断有效， 若不一致， 判断无 效。
较佳地， 所述要接入小区是所述终端根据测量结果选取的。
如图 19所示， 在本发明终端接入系统的第三实施例中， 相对于图 17所 示的系统， 该系统还包括：
所述终端的网络云图更新模块， 设置为： 在执行终端公用空口配置后， 根据终端公用空口配置结果更新自身存储的网络云图中该小区的小区相关信 息， 并根据接收的小区广播消息中的信息更新时间更新其存储的信息更新时 间。
在本发明终端接入系统的第四实施例中， 相对于图 17所示的系统， 如图 20所示， 该系统还包括：
核心网的共享云图存储模块， 设置为： 存储终端信息共享云图， 其包括 附着或曾附着于网络的终端的相关信息；
小区的终端信息判断模块， 设置为： 判断核心网存储的终端信息共享云 图中是否有所述终端的相关信息；
所述终端信息共享云图中有所述终端的相关信息时， 所述终端、 小区、 核心网的参数配置模块不执行安全参数配置过程， 所述终端信息共享云图中 没有所述终端的相关信息时， 执行安全参数配置过程。
较佳地， 所述小区和核心网的参数配置模块执行的参数配置还包括继承 已有承载配置及小区切换时转移数据传输关系。
如图 20所示， 所述系统还包括小区的共享云图更新模块， 设置为： 在所 述终端信息有变化时向核心网发送终端信息更新消息；
所述核心网的共享云图存储模块， 还设置为： 根据所述终端信息更新消 息更新所述终端信息共享云图。
所述小区的共享云图更新模块还设置为： 在所述小区与所述终端脱离通 信时， 发送去激活消息给所述核心网的共享云图存储模块；
所述核心网的共享云图存储模块， 还设置为： 根据所述去激活消息启动 定时器， 若定时器超时且未收到终端信息更新消息， 则删除该去激活的终端 的相关信息。 优选地， 所述终端的随机接入模块与小区交互包括： 向要接入小区发送 上行导频以及接收所述上行导频响应后发送接入请求， 其中若所述终端根据 测量结果判断需切换到新小区， 且发送第二上行导频， 所述接入请求中携带 的接入原因为无线链路失败后发起的初始接入。
优选地， 所述小区广播消息还携带小区运行状态信息， 若所述小区运行 状态信息表明当前小区为拥塞状态， 则所述终端的随机接入模块重新选择要 接入的小区以执行随机接入过程。
对应于方法实施例 3 , 本发明实施例还提供了一种终端， 如图 21所示， 所述终端包括：
小区选取模块， 设置为： 根据测量结果需要切换到新的小区时， 选取要 接入的新小区；
上行导频发送模块， 设置为： 发送上行导频；
接入请求发送模块， 设置为： 在接收到网络侧发送的上行导频响应后， 发送接入请求， 其中携带的发起接入原因为无线链路失败后发起初始接入。
对应于方法实施例 4 , 本发明实施例还提供了另一种终端接入系统， 如 图 22所示， 该系统包括：
核心网的共享云图存储模块， 设置为： 存储终端信息共享云图， 其包括 附着或曾附着于网络的终端的相关信息； 根据所述终端信息更新消息更新所 述终端信息共享云图；
小区的终端识别模块， 设置为： 在接收终端发送的接入请求后， 查找核 心网终端信息共享云图是否有该终端的相关信息；
核心网、 小区和终端的参数配置模块， 设置为： 执行参数配置， 其中若 终端信息共享云图有该终端， 则不执行安全参数配置， 所述终端信息共享云 图中没有该终端时， 执行安全参数配置；
小区的共享云图更新模块， 设置为： 在所述终端信息有变化时向核心网 发送终端信息更新消息。
所述小区的共享云图更新模块还设置为： 在所述小区与所述终端脱离通 信时， 发送去激活消息给所述核心网的共享云图存储模块； 优选地， 所述核心网的共享云图存储模块， 还设置为： 根据所述去激活 消息启动定时器， 若定时器超时且未收到终端信息更新消息， 则删除该去激 活的终端的相关信息。
另外， 本发明实施例还提供了一种用于实现实施例 1、 2或 5的终端， 该 终端包括：
网络云图下载模块， 设置为： 根据预定策略从因特网服务器下载并存储 包括小区相关信息网络云图， 所述小区相关信息包括小区的终端公用空口配 置参数， 所述网络云图的终端公用空口配置参数和 /或小区广播消息中包括用 于智能接入的第一上行导频；
随机接入模块， 设置为： 与小区交互执行随机接入过程， 其中， 若所述 网络云图下载模块存储的网络云图包括要接入小区的小区相关信息， 且该小 区相关信息有效， 则发送第一上行导频， 若所述网络云图下载模块存储的网 络云图不包括要接入小区的小区相关信息， 或者该小区相关信息无效， 发送 用于非智能接入的第二上行导频；
参数配置模块， 设置为： 执行无线空口参数配置过程， 其中， 若发送第 一上行导频， 则不执行与所述网络云图中终端公用空口配置参数相应的终端 公用空口配置， 若发送第二上行导频， 则执行与所述网络云图中终端公用空 口配置参数相应的终端公用空口配置。
优选地， 所述网络云图还包括小区相关信息对应的信息更新时间， 所述 小区相关信息还包括用于标识小区的小区标识信息， 小区广播消息中携带网 络云图中小区相关信息的信息更新时间， 该终端还包括：
有效性判断模块， 设置为： 执行随机接入前， 接收小区广播消息并根据 所述小区标识信息判断是否已存储要接入小区的小区相关信息； 判断已存储 时， 还用于判断小区广播消息中的信息更新时间与已存储所述 d、区相关信息 的信息更新时间是否一致， 若一致， 则判断有效， 若不一致， 则判断无效。
较佳地， 所述要接入小区是所述终端根据测量结果选取的。
优选地， 该终端还包括：
网络云图更新模块， 设置为： 在执行终端公用空口配置后， 根据终端公 用空口配置结果更新自身存储的网络云图中该小区的小区相关信息， 并根据 接收的小区广播消息中的信息更新时间更新其存储的信息更新时间。
本发明实施例适用于基于信道资源共享调度的移动通信系统， 而基于信 道资源共享调度的机制也是移动通信系统发展的趋势。 在移动通信系统的标 准演进过程中， 3G后期的 HSPA+和 4G, 都基本上建立了这个机制， 而下一 代移动通信系统会把此机制运用的更彻底， 所以本发明更适合下一代移动通 信系统， 而 3G的 HSPA+和 4G进行适当的改造升级后可以釆用本发明。
本发明实施例终端接入方法相比传统的接入和切换， 智能接入在信令上 有了明显的简化， 而且避开了传统切换过程中无线信道条件最为恶劣的信令 阶段（图 2中的第 1步和第 2步） ， 所以， 通过本发明实施例可以有效减少 接入和切换的空口时延， 提高接入和切换的成功率， 同时， 大大减少了信令 开销， 降低了同频干扰， 使得网络能够把资源和能源更多的用于传输真正有 效的数据上去， 提高资源的利用率， 这对于提升同频组网下蜂窝小区边缘切 换区域的业务性能， 是很有好处的。
显然， 本领域的技术人员应该明白， 上述的本发明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， 本发明不限制于任何特定的硬件和软件 结合。
工业实用性
本发明实施例本发明实施例终端接入方法利用因特网服务器或核心网预 先存储需要在接入过程中需要信令交互实现的配置参数， 可以有效避免终端 进行过多的信令交互， 减少信令开销。 针对切换场景， 本发明实施例通过直 接选取要切换的小区， 并直接向目标小区发起接入过程， 避免了与原小区交 互时干扰严重的阶段。

Claims

权 利 要 求 书
1、 一种终端接入方法， 该方法包括：
终端从因特网服务器下载并存储包括小区相关信息的网络云图， 所述小 区相关信息包括小区的终端公用空口配置参数， 所述网络云图的终端公用空 口配置参数和 /或小区广播消息中包括用于智能接入的第一上行导频；
执行随机接入过程， 其中， 若所述终端存储的网络云图包括要接入小区 的小区相关信息， 且该小区相关信息有效， 则发送第一上行导频， 若所述终 端存储的网络云图不包括要接入小区的小区相关信息， 或者该小区相关信息 无效， 则发送用于非智能接入的第二上行导频；
执行参数配置过程， 其中， 若所述终端发送第一上行导频， 则不执行与 所述网络云图中终端公用空口配置参数相应的终端公用空口配置， 若所述终 端发送第二上行导频， 则执行与所述网络云图中终端公用空口配置参数相应 的终端公用空口配置。
2、 如权利要求 1所述的方法，其中， 所述网络云图还包括小区相关信 息对应的信息更新时间， 所述小区相关信息还包括用于标识小区的小区标识 信息， 小区广播消息中携带网络云图中小区相关信息的信息更新时间， 执行 随机接入过程前， 该方法还包括：
所述终端接收小区广播消息并根据小区标识信息判断是否已存储要接入 小区的小区相关信息； 若已存储， 则判断小区广播消息中的信息更新时间与 所述终端存储的所述小区相关信息的信息更新时间是否一致， 若一致， 则判 断有效， 若不一致， 则判断无效。
3、 如权利要求 1所述的方法，其中： 所述要接入小区是所述终端根据 测量结果选取的。
4、 如权利要求 1所述的方法， 其中： 执行终端公用空口配置后， 该方 法还包括：
所述终端根据终端公用空口配置结果更新自身存储的网络云图中该小区 的小区相关信息， 并根据接收的小区广播消息中的信息更新时间更新其存储 的信息更新时间。
5、 如权利要求 1所述的方法， 其中： 核心网存储终端信息共享云图， 其包括附着或曾附着于网络的终端的相关信息， 所述参数配置过程中， 若小 区判断所述终端信息共享云图中有所述终端的相关信息， 则不执行安全参数 配置过程， 若小区判断所述终端信息共享云图中没有所述终端的相关信息， 则执行安全参数配置过程。
6、 如权利要求 1所述的方法，其中： 所述参数配置过程还包括终端专 用参数配置以及小区和核心网之间的参数配置。
7、 如权利要求 5所述的方法， 其中： 参数配置过程后， 若所述终端信 息有变化， 该方法还包括： 所述小区发送终端信息更新消息给所述核心网； 所述核心网才艮据该终端信息更新消息更新所述终端信息共享云图。
8、 如权利要求 7所述的方法，其中： 所述终端信息有变化包括以下情 形：
所述小区判断与所述终端脱离通信时， 发送去激活消息给所述核心网的 终端信息共享云图；
所述终端信息共享云图启动定时器， 若定时器超时且未收到终端信息更 新消息， 则所述终端信息共享云图删除该去激活的终端的相关信息。
9、 如权利要求 1所述的方法， 中， 所述随机接入过程包括： 所述终端向要接入小区发送上行导频；
所述终端接收所述上行导频响应后发送接入请求， 其中若所述终端根据 测量结果判断需切换到新小区， 且发送第二上行导频， 所述接入请求中携带 的接入原因为无线链路失败后发起的初始接入。
10、 如权利要求 1所述的方法，其中： 所述小区广播消息还携带小区运 行状态信息， 若所述小区运行状态信息表明当前小区为拥塞状态， 则所述终 端重新选择要接入的小区以执行随机接入过程。
11、 一种终端， 该终端包括：
网络云图下载模块， 其设置为： 从因特网服务器下载并存储包括小区相 关信息网络云图， 所述小区相关信息包括小区的终端公用空口配置参数， 所 述网络云图的终端公用空口配置参数和 /或小区广播消息中包括用于智能接 入的第一上行导频；
随机接入模块， 其设置为： 与小区交互执行随机接入过程， 其中， 若所 述网络云图下载模块存储的网络云图包括要接入小区的小区相关信息， 且该 小区相关信息有效， 则发送第一上行导频， 若所述网络云图下载模块存储的 网络云图不包括要接入小区的小区相关信息， 或者该小区相关信息无效， 发 送用于非智能接入的第二上行导频；
参数配置模块， 其设置为： 执行无线空口参数配置过程， 其中， 若发送 第一上行导频， 则不执行与所述网络云图中终端公用空口配置参数相应的终 端公用空口配置， 若发送第二上行导频， 则执行与所述网络云图中终端公用 空口配置参数相应的终端公用空口配置。
12、 如权利要求 11所述的终端， 其中， 所述网络云图还包括小区相关 信息对应的信息更新时间， 所述小区相关信息还包括用于标识小区的小区标 识信息， 小区广播消息中携带网络云图中小区相关信息的信息更新时间， 该 终端还包括：
有效性判断模块， 其设置为： 执行随机接入前， 接收小区广播消息并根 据所述小区标识信息判断是否已存储要接入小区的小区相关信息； 判断已存 储时， 判断小区广播消息中的信息更新时间与已存储所述小区相关信息的信 息更新时间是否一致， 若一致， 则判断有效， 若不一致， 则判断无效。
13、 如权利要求 11所述的终端， 其中： 所述要接入小区是所述终端根 据测量结果选取的。
14、 如权利要求 11所述的终端， 该终端还包括：
网络云图更新模块， 其设置为： 在执行终端公用空口配置后， 根据终端 公用空口配置结果更新自身存储的网络云图中该小区的小区相关信息， 并根 据接收的小区广播消息中的信息更新时间更新其存储的信息更新时间。
15、 一种终端接入系统， 该系统包括如权利要求 11至 14所述的终端， 还包括：
因特网服务器， 其设置为： 存储包括小区相关信息的网络云图， 所述小 区相关信息包括小区的终端公用空口配置参数， 所述网络云图的终端公用空 口配置参数和 /或小区广播消息中包括用于智能接入的第一上行导频；
小区及核心网的参数配置模块， 其设置为： 执行无线空口参数配置过程， 其中， 若终端发送第一上行导频， 则不执行与所述网络云图中终端公用空口 配置参数相应的终端公用空口配置， 若终端发送第二上行导频， 则执行与所 述网络云图中终端公用空口配置参数相应的终端公用空口配置；
核心网的共享云图存储模块， 其设置为： 存储终端信息共享云图， 其包 括附着或曾附着于网络的终端的相关信息；
小区的终端信息判断模块， 其设置为： 判断核心网存储的终端信息共享 云图中是否有所述终端的相关信息；
所述终端信息共享云图中有所述终端的相关信息时， 所述终端、 小区、 核心网的参数配置模块不执行安全参数配置过程， 所述终端信息共享云图中 有所述终端的相关信息时， 则执行安全参数配置过程。
16、 如权利要求 15所述的系统， 其中： 所述小区和核心网的参数配置 模块执行的参数配置还包括继承已有承载配置及小区切换时转移数据传输关 系。
17、 如权利要求 15所述的系统， 所述系统还包括小区的共享云图更新 模块， 其设置为： 在所述终端信息有变化时向核心网发送终端信息更新消息； 所述核心网的共享云图存储模块， 还设置为： 根据所述终端信息更新消 息更新所述终端信息共享云图。
18、 如权利要求 17所述的系统， 其中： 所述小区的共享云图更新模块 还设置为： 在所述小区与所述终端脱离通信时， 发送去激活消息给所述核心 网的共享云图存储模块； 所述核心网的共享云图存储模块， 还设置为： 根据所述去激活消息启动 定时器， 若定时器超时且未收到终端信息更新消息， 则删除该去激活的终端 的相关信息。
19、 如权利要求 15所述的系统， 其中， 所述终端的随机接入模块是设 置为以如下方式与小区交互： 向要接入小区发送上行导频以及接收所述上行 导频响应后发送接入请求， 其中若所述终端根据测量结果判断需切换到新小 区， 且发送第二上行导频， 所述接入请求中携带的接入原因为无线链路失败 后发起的初始接入。
20、 如权利要求 15所述的系统， 其中： 所述小区广播消息还携带小区 运行状态信息， 若所述小区运行状态信息表明当前小区为拥塞状态， 则所述 终端的随机接入模块重新选择要接入的小区以执行随机接入过程。
21、 一种终端接入方法， 该方法包括：
小区选取步骤， 终端根据测量结果判断需要切换到新的小区， 则选取要 接入的新小区；
上行导频发送步骤， 所述终端发送上行导频； 以及
接入请求发送步骤， 所述终端接收到网络侧发送的上行导频响应后， 发 送接入请求， 其中携带的发起接入原因为无线链路失败后发起初始接入。
22、 一种终端， 所述终端包括：
小区选取模块， 其设置为： 根据测量结果需要切换到新的小区时， 选取 要接入的新小区；
上行导频发送模块， 其设置为： 发送上行导频； 以及
接入请求发送模块， 其设置为： 在接收到网络侧发送的上行导频响应后， 发送接入请求， 所述接入请求中携带的发起接入原因为无线链路失败后发起 初始接入。
23、 一种终端接入方法， 该方法包括：
核心网存储终端信息共享云图， 所述终端信息共享云图包括附着或曾附 着于网络的终端的信息；
所述小区接收终端发送的接入请求后， 查找核心网终端信息共享云图是 否有该终端的相关信息；
执行参数配置过程， 其中终端信息共享云图有该终端， 则不执行安全参 数配置， 终端信息共享云图没有该终端， 则执行安全参数配置；
信息变化时， 所述小区更新核心网存储的终端信息共享云图。
24、 如权利要求 23所述的方法， 其中： 所述终端信息有变化包括以下 情形：
所述小区判断与所述终端脱离通信时， 发送去激活消息给所述核心网的 终端信息共享云图；
所述终端信息共享云图启动定时器， 若定时器超时且未收到终端信息更 新消息， 则所述终端信息共享云图删除该去激活的终端的相关信息。
25、 一种终端接入系统， 该系统包括：
核心网的共享云图存储模块， 其设置为： 存储终端信息共享云图， 其包 括附着或曾附着于网络的终端的相关信息； 以及根据所述终端信息更新消息 更新所述终端信息共享云图；
小区的终端识别模块， 其设置为： 在接收终端发送的接入请求后， 查找 核心网终端信息共享云图是否有该终端的相关信息；
核心网、 小区和终端的参数配置模块， 其设置为： 执行参数配置， 其中 若终端信息共享云图有该终端， 则不执行安全参数配置， 若终端信息共享云 图没有该终端， 则执行安全参数配置；
小区的共享云图更新模块， 其设置为： 在所述终端信息有变化时向核心 网发送终端信息更新消息。
26、 如权利要求 25所述的系统， 其中： 所述小区的共享云图更新模块 还设置为： 在所述小区与所述终端脱离通信时， 发送去激活消息给所述核心 网的共享云图存储模块； 所述核心网的共享云图存储模块， 还设置为： 根据所述去激活消息启动 定时器， 若定时器超时且未收到终端信息更新消息， 则删除该去激活的终端 的相关信息。
27、 一种终端接入方法， 包括：
终端从因特网服务器下载包括小区相关信息的网络云图， 所述小区相关 信息包括小区的终端公用空口配置参数， 核心网存储终端信息共享云图， 其 包括附着或曾附着于网络的终端的相关信息， 该方法包括：
小区选取步骤， 终端根据测量结果选取要接入的小区；
随机接入步骤， 执行随机接入过程， 若终端已下载的网络云图符合智能 接入条件， 则随机接入过程后执行终端识别步骤， 若终端已下载的网络云图 不符合智能接入条件，则随机接入过程后执行终端识别步骤或参数配置步骤； 终端识别步骤， 所述小区查找核心网终端信息共享云图是否有该终端的 相关信息， 所述终端信息共享云图包括附着或曾附着于网络的终端的信息； 参数配置步骤， 执行参数配置过程， 其中， 若共享云图中有该终端， 则 不执行安全参数配置过程， 若为符合智能接入条件， 则不执行与所述网络云 图中终端公用空口配置参数相应的无线空口公用参数配置；
云图更新步骤， 信息变化时， 所述终端更新自身存储的网络云图， 所述 'J、区更新核心网存储的终端信息共享云图。
28、 如权利要求 27所述的方法， 其中： 所述网络云图还包括小区相关 信息对应的信息更新时间， 所述小区相关信息还包括用于标识小区的小区标 识信息， 小区广播消息中携带网络云图中小区相关信息的信息更新时间， 所 述终端判断符合智能接入条件包括：
所述终端接收小区广播消息并根据小区标识信息判断是否已存储要接入 小区的小区相关信息； 若已存储， 则判断小区广播消息中的信息更新时间与 所述终端存储的所述小区相关信息的信息更新时间是否一致， 若一致， 则判 断符合智能接入条件， 若不一致， 则判断不符合智能接入条件。 如权利要求 27所述的方法， 其中， 所述随机接入过程包括: 所述终端向要接入小区发送上行导频；
所述终端接收所述上行导频响应后发送接入请求， 其中若所述终端根据 测量结果判断需切换到新小区， 且发送第二上行导频， 所述接入请求中携带 的接入原因为无线链路失败后发起的初始接入。
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KR101690629B1 (ko) 2016-12-28
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JP2015526051A (ja) 2015-09-07
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