WO2012041204A2 - Procédé de régulation de charge et dispositif associé - Google Patents

Procédé de régulation de charge et dispositif associé Download PDF

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Publication number
WO2012041204A2
WO2012041204A2 PCT/CN2011/080175 CN2011080175W WO2012041204A2 WO 2012041204 A2 WO2012041204 A2 WO 2012041204A2 CN 2011080175 W CN2011080175 W CN 2011080175W WO 2012041204 A2 WO2012041204 A2 WO 2012041204A2
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WIPO (PCT)
Prior art keywords
user equipment
access
network device
message
mtc device
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PCT/CN2011/080175
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English (en)
Chinese (zh)
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WO2012041204A3 (fr
Inventor
冯媛
全海洋
赵毅
张英
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电信科学技术研究院
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Publication of WO2012041204A2 publication Critical patent/WO2012041204A2/fr
Publication of WO2012041204A3 publication Critical patent/WO2012041204A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for load control. Background technique
  • M2M (Machine-to-machine) communication is a new communication concept, which aims to combine many different types of communication technologies (such as machine-to-machine communication, machine control communication, human-computer interaction communication, Mobile internet communication, etc., to promote the development of social production and lifestyle.
  • the current mobile communication network is designed for communication between people (such as: determination of network capacity, etc.), if you want to use the current mobile communication network to support M2M communication, you need to move to the current according to the characteristics of M2M communication.
  • the mechanisms of the communication system are optimized to better achieve M2M communication in situations where traditional human-to-human communication is not affected or less affected.
  • MTC Machine Type Communication
  • the MTC terminal has low mobility.
  • the time for data transmission between the MTC terminal and the network side is controllable; that is, the MTC terminal can only access during the specified time period of the network.
  • the data transmission performed by the MTC terminal and the network side does not require real-time performance, that is, it has time tolerance.
  • MTC terminals are energy limited and require very low power consumption.
  • MTC terminals can be managed in groups. In practical applications, an MTC terminal may have one or more of the above characteristics. Currently, it is not supported in 3G (3rd-generation, 3rd generation mobile communication technology) and LTE (Long Term Evolution) systems. A function specifically designed for MTC terminal communication designed for the above characteristics. For an MTC terminal, it can only be treated as an ordinary terminal, and cannot be separated from the user, that is, it cannot be called simple inter-machine communication or machine type communication.
  • the current LTE system and the division of UE (User Equipment) capabilities are designed for H2H (Human to Human) communication requirements, and the MTC service features and service characteristics in traditional H2H communication are large. Differences, for example: In many MTC communication scenarios, MTC has the characteristics of delay insensitivity and low data transmission priority.
  • the MTC communication load can be controlled according to the network load condition, and the prior art does not propose according to the network load. The way the status controls the MTC communication load. Summary of the invention
  • the embodiments of the present invention provide a method and a device for controlling load to control the access of an MTC device to the network, thereby saving signaling overhead.
  • an embodiment of the present invention provides a method for load control, including:
  • the access network device obtains type information of the user equipment
  • the access network device controls the user equipment to access the network according to the admission control mode.
  • An embodiment of the present invention provides a method for load control, including: determining, by a user equipment, type information of the user;
  • the user equipment sends the type information to the access network device, so that the access network device determines the admission control mode of the user equipment according to the type information and the load status.
  • An embodiment of the present invention provides a method for load control, including:
  • the core network device acquires indication information corresponding to the user equipment
  • the core network device sends the indication information to the access network device, so that the access network device determines the admission control mode of the user equipment according to the indication message.
  • An embodiment of the present invention provides an access network device, including:
  • An obtaining module configured to acquire type information of the user equipment
  • a determining module configured to determine, according to the type information and a load condition, an admission control manner of the user equipment
  • control module configured to control the user equipment to access the network according to the admission control manner.
  • An embodiment of the present invention provides a user equipment, including:
  • a determining module for determining type information of itself
  • a sending module configured to send the type information to the access network device, where the access network device determines an admission control mode of the user equipment according to the type information and a load condition.
  • the embodiment of the invention provides a core network device, including:
  • An obtaining module configured to obtain indication information corresponding to the user equipment
  • a sending module configured to send the indication information to the access network device, where the access network device determines, according to the indication message, an admission control manner of the user equipment.
  • the present invention has at least the following advantages:
  • the access network device can adopt different processing modes for different types of terminals according to the load status of the network side, so that the MTC terminal can be controlled to access existing without any significant signaling overhead.
  • FIG. 1 is a schematic flowchart of a method for load control according to a first embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for load control according to a second embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a user equipment according to Embodiment 8 of the present invention
  • FIG. 5 is a schematic structural diagram of a core network device according to Embodiment 9 of the present invention.
  • (idle) state The random access procedure in the initial access scenario, including:
  • the eNB After receiving the preamble (Msgl) sent by the UE, the eNB sends a random access response (Msg2) to the UE in the random access response window.
  • Msg2 can respond to a random access request (preamble) of multiple UEs.
  • the Msg2 is scheduled by the PDCCH (Physical Downlink Control Channel) scrambled by the RA-RNTI (Random Access Radio Network Temporary Identity), and the RA-RNTI is transmitted by the time-frequency resource of the Msgl. Location is determined.
  • PDCCH Physical Downlink Control Channel
  • RA-RNTI Random Access Radio Network Temporary Identity
  • the content in the Msg2 includes: a backoff parameter, a preamble identifier corresponding to the Msgl, an uplink transmission timing advance (TA), an uplink resource allocated by the Msg3 (Msg3 scheduling information), and a temporary C-RNTK Cell Radio Network. Temporary Identity, cell wireless network temporary identification), etc.
  • TA uplink transmission timing advance
  • Msg3 scheduling information an uplink resource allocated by the Msg3
  • C-RNTK Cell Radio Network Temporary Identity, cell wireless network temporary identification
  • the UE may determine the random access response sent to itself by using the preamble identifier in the RA-RNTI and the Msg2. If the preamble corresponding to the preamble identifier in the Msg2 includes the preamble when the random access is initiated by itself, the UE considers that it is successful. After receiving the random access response message, Msg3 will be sent to the network side. If the UE does not correctly receive the Msg2, the delay of the next random access is determined according to the delay limit of the backoff parameter, and the random access resource is additionally selected to initiate the next random access. After the maximum number of random accesses is reached, the UE (Media Access Control) layer reports a random access problem to the RRC (Radio Resource Control) layer to trigger a radio link failure.
  • RRC Radio Resource Control
  • Msg3 contains different content for different scenarios. For example, in the initial access, the RRC connection re-establishment request message generated by the RRC layer is carried in the Msg3.
  • the UE In the RRC connection reestablishment request message, the UE notifies the eNB of the establishment cause by using an EstablishmentCause, where the current establishment cause includes: an emergency call initiated by the UE, a UE called access (mt-Access), High priority access (high priority access), UE-initiated signaling (mo-Signalling), data transmission (mo-Data), and three reserved cause values are reserved.
  • the RRC connection setup request message is transparently transmitted (TM) through the RLC (Radio Link Control) layer, the necessary MAC header, MAC CE (Control Element), and padding are added to the MAC layer. Bits, assembled into a MAC PDU (Protocol Data Unit), ie Msg 3.
  • TM Radio Link Control
  • the length of the MAC header is variable.
  • One MAC header includes one or more MAC subheaders, and each MAC subheader corresponds to one MAC SDU (Service Data Unit) or MAC CE or padding.
  • the MAC sub-header contains an LCID field (Logical Channel ID), which is used to identify the logical channel number, MAC CE type, padding, and so on.
  • the LCID settings of the current UL-SCH are shown in Table 1:
  • 00001-yyyyyy Identity of the logical channeK also collects the channel logo
  • the eNB and the UE complete the final contention resolution through Msg4.
  • the content of Msg4 corresponds to the content of Msg3.
  • the Msg4 carries the UE to resolve the identification of the MAC layer control unit (Contention Resolution Identity MAC CE), and the MAC CE includes the CCCH (Common Control Channel) SDU transmitted by the UE in the Msg3; After receiving the MAC CE, the UE compares with its own RRC layer information to complete the contention resolution.
  • the MAC layer control unit Contention Resolution Identity MAC CE
  • the MAC CE includes the CCCH (Common Control Channel) SDU transmitted by the UE in the Msg3
  • the UE compares with its own RRC layer information to complete the contention resolution.
  • the Msg4 may further include an RRC connection setup message, which is used to establish a signaling radio bearer 1 (SRB1) of the UE.
  • SRB1 signaling radio bearer 1
  • the Msg4 includes an RRC connection setup message, which is used to establish a signaling radio bearer 1 (SRB1) of the UE.
  • SRB1 signaling radio bearer 1
  • the eNB does not allow the UE to access (for example, because the network does not support some type of RRC connection establishment, or the MME (Mobility Management Entity) has been overloaded, or the base station is overloaded, etc.) And the eNB sends an RRC connection reject message to the UE, where the RRC connection reject message includes a wait time (Wait time), for current LTE, the wait time field is characterized by 4 bits, representing a latency of 1 to 16 seconds.
  • the wait time for current LTE
  • the wait time field is characterized by 4 bits, representing a latency of 1 to 16 seconds.
  • the UE After the UE completes the contention resolution, that is, the UE receives the RRC connection setup message, the UE establishes a signaling radio bearer 1 (SRB1) according to the information in the RRC connection setup message, and sends an RRC connection setup complete message to the network.
  • SRB1 signaling radio bearer 1
  • the NAS (Non-Access Stratum) service request message may be sent to the network side when the RRC connection setup complete message is sent. If the UE receives the RRC Connection Reject message, the timer T302 needs to be started according to the wait time, and the RRCConnectionRequest message cannot be sent again before the timeout.
  • the eNB when the network desires to release the RRC connection with the UE according to the current load and other considerations, the eNB sends an RRC connection release message to the UE to release the current RRC connection, and at the same time, the UE can be redirected. Go to the specified frequency/system.
  • the eNB may perform overload protection on the current network according to an RRM (Radio Resource Management) algorithm such as its own network load and admission algorithm.
  • the MME may determine whether to enter an overload state according to its own load and capacity status, and send an overload start message to all or a part of the eNBs with which the S1 is connected after the overload, and notify the eNB to perform overload control.
  • the eNB may be designated to perform the following operations. Three operations: All non-emergency calls are rejected, all caller data services are rejected; for non-emergency calls, all caller signaling services are rejected; only emergency services and called calls are allowed.
  • the eNB after receiving the overload control message of the MME, the eNB performs overload protection according to the control policy indicated in the message.
  • the specific overload protection includes: The eNB may reject the RRC connection establishment procedure by using an RRC Connection Reject message, and release the RRC connection or the like by using an RRC connection release message.
  • MTC has the characteristics of delay insensitivity and low priority of data transmission.
  • the network is under signal congestion or overload, in order to avoid H2H communication.
  • the impact guarantees the communication quality, and can control the MTC communication load according to the network load condition.
  • the access network device can adopt different processing modes for different types of user equipment according to the load status of the network side, thereby Under the premise of no obvious signaling overhead, the impact on the network when the MTC terminal accesses the existing network can be controlled.
  • the method in the embodiment of the present invention is applicable not only to the LTE and LTE-A systems but also to the UMTS (Universal Mobile Telecommunications System) system.
  • the access network device is a radio network controller VS ⁇ station RNC (Radio Network Controller) ⁇ NB (NodeB, base station) and other access network devices that appear later, such as: relay device Relay, etc.
  • the core network equipment is SGSN (Serving GPRS Support Node).
  • the connection establishment and signaling functions between the terminal and the access network device and the access network device and the core network device are basically similar, except that the message name or the specific implementation manner is different.
  • the LTE system is mainly described as an example.
  • the implementation process in the UMTS system can be implemented in a similar manner, and thus the description is not repeated.
  • Embodiment 1 of the present invention provides a method for load control. As shown in FIG. 1, the method includes the following steps:
  • Step 101 The user equipment determines its own type information. Among them, for each user equipment, it can know its own type information.
  • the type information includes but is not limited to: the user equipment is an MTC device (MTC terminal) or an H2H device (H2H terminal).
  • Step 102 The user equipment sends its own type information to the access network device.
  • the access network device includes, but is not limited to, an eNB device, a base station device, an RNC device, and the like.
  • the user equipment may send the type information of the user equipment to the access network device by using the type indication information, where the type indication information indicates the type information of the user equipment, for example, the type indication.
  • the information indicates that the user equipment is an MTC terminal.
  • the user equipment may send a MAC CE indication to the access network device that carries the type indication information of the user equipment, and the MAC CE instructs to notify the access network device of the type of the user equipment.
  • the user equipment may also send a CCCH channel identifier indication carrying the type indication information of the user equipment to the access network device, and the CCCH logical channel identifier indicates that the type of the user equipment is notified to the access network device.
  • the user equipment may also send an RRC connection setup request message carrying the type indication information of the user equipment to the access network device, and the RRC connection setup request message notifies the access network device of the type of the user equipment.
  • the user equipment may also send an RRC connection setup complete message carrying the type indication information of the user equipment to the access network device, and the RRC connection setup complete message notifies the access network device of the type of the user equipment.
  • the type indication information is used to indicate whether the user equipment is an MTC device, and/or the PLMN (Public Land Mobile-Communication Network) and the currently selected PLMN are indicated. relationship.
  • PLMN Public Land Mobile-Communication Network
  • the type indication information indicates whether the user equipment is an MTC device, further indicating whether the user equipment is a low priority MTC device, whether it is from another
  • the PLMN roams the MTC device, whether it is a time-tolerant MTC device, and/or, whether it is a small amount of data MTC device.
  • the type indication information indicates the relationship between the PLMN to which the user equipment belongs and the currently selected PLMN, further indicating that the PLMN currently selected by the user equipment is the equivalent PLMN of the PLMN to which the user equipment belongs, and the currently selected PLMN is the VPLMN of the PLMN to which the PLMN belongs (Visited PLMN) , access PLMN), the currently selected PLMN is the preferred choice for the user equipment
  • the PLMN and MTC devices in the PLMN list are not preferred on the HPLMN or SIM card.
  • the PLMN, MTC device in the PLMN list is not in the HPLMN or equivalent HPLMN, and / or the MTC device is not in the HPLMN.
  • Step 103 The access network device acquires type information of the user equipment.
  • the access network device may directly determine the type information of the user equipment according to the type indication information, because the type information of the user equipment is indicated in the type indication information.
  • the access network device may know that the user equipment is an MTC device; when the type indication information indicates that the user equipment is a low priority MTC device, the access network device may know the user. Device is low priority
  • the access network device may obtain the type information of the user equipment from the MAC CE indication.
  • the access network device may obtain the type information of the user equipment from the CCCH logical channel identifier indication.
  • the access network device may obtain the type information of the user equipment from the RRC connection setup request message.
  • the access network device may obtain the type information of the user equipment from the RRC connection setup complete message.
  • Step 104 The access network device determines, according to the type information and the load status, the admission control mode of the user equipment.
  • the admission control mode includes allowing the MTC device to access the network or not allowing the MTC device to access the network.
  • the access network device may further determine an admission control mode of the MTC device according to the current network load condition, to allow the MTC device to access the network or not allow the MTC device. Access to the network, so that different types of user equipment are treated differently, and then the impact of the MTC device on the network when accessing the existing network can be controlled. For example, when the access network device is based on its own network load status and admission algorithm, etc.
  • the access network device may not allow the MTC device to access the network, thereby saving network load; when it is determined according to its own network load condition, the current network is not required to be determined. In the case of overload protection, for the MTC device, the access network device may allow the MTC device to access the network.
  • the core network device (such as the MME) can also determine whether to enter the overload state according to its own load status and capacity status, and send an overload start to all or part of the eNBs with which the S1 connection is connected after the overload.
  • the message informs the eNB to perform overload control. Therefore, the access network device may further determine the admission control mode of the user equipment according to the indication information of the core network device. For example, when the core network device indicates that the overload control is required, the access network device may not allow the MTC device for the MTC device. Access to the network to save network load.
  • the access network device can determine the admission control mode of the user equipment according to the type information of the user equipment, the load status, and the indication information of the core network device.
  • the access network device needs to obtain the indication information from the core network device before determining the admission control mode of the user equipment.
  • the access network device receives the indication information from the core network device through the S1 interface message.
  • the access network device receives the indication information from the core network device through the Iu interface message.
  • the S1 interface message includes an overload start message or an overload end message from a core network device, and an overload action message in the overload start message or an IE (Information Element) carries an indication message;
  • the M2M dedicated overload control message of the core network device, the M2M dedicated overload control message carries the indication message;
  • the M2M dedicated overload start message or the M2M dedicated overload stop message from the core network device, and the dedicated overload start message or the M2M dedicated overload stop message carries the indication message.
  • the Iu interface message includes an overload message from the core network device, and the overload start message IE or the overload end IE carries an indication message; the M2M dedicated overload control message from the core network device is carried in the M2M dedicated overload control message.
  • the indication message is: an overload message from the core network device, and the M2M dedicated overload start IE or the M2M dedicated overload end IE of the overload message carries the indication message.
  • the user equipment when the user equipment is determined to be an MTC device according to the type information, the following situations may be included:
  • the access network device determines, according to the load condition, an admission control mode that allows the MTC device to access the network; or the admission control mode that does not allow the MTC device to access the network; or, the access network device determines, according to the indication information of the core network device, The admission control mode of the MTC device accessing the network; or the admission control mode of the MTC device not allowed to access the network; or the access network device determines that the MTC device is allowed to access the network according to the load status and the indication information of the core network device; or The MTC device is allowed to access the network; or the access network device determines that the MTC device is allowed to access the network according to the relationship between the PLMN to which the MTC device belongs and the currently selected PLMN, and the indication information of the core network device; or the MTC device is not allowed to access the network; Alternatively, the access network device determines that the MTC device is allowed to access the network according to the relationship between the PLMN to which the MTC device belongs and the currently selected PLMN, and the load
  • Step 105 The access network device controls the user equipment to access the network according to the admission control mode.
  • the access network device when the admission control mode is to allow the MTC device to access the network, in the case of the RRC connection setup request message, the access network device sends an RRC connection setup message (for establishing an RRC connection) to the MTC device, by the MTC device.
  • the RRC connection setup message access network; for the RRC connection setup complete message (ie, the current RRC connection of the MTC device has been established), the access network device allows the NAS service request of the MTC device.
  • the access network device sends the RRC to the MTC device.
  • a connection reject message for rejecting the RRC connection setup procedure
  • the MTC device that the MTC device is not allowed to access the network
  • the RRC connection setup complete message ie, the current RRC connection of the MTC device has been established
  • access The network device sends an RRC connection release message (for releasing the RRC connection) to the MTC device, and notifies the MTC device to release the current RRC connection.
  • the waiting time information needs to be carried.
  • waiting time information needs to be carried.
  • the waiting time information can be selected according to actual needs.
  • each integer value in the latency information may represent a set value with the integer value being an exponential power; or each integer value represents a set length of time.
  • each integer value in the waiting time information can represent a set value with the integer value as an exponential power, and the integer value of the waiting time information is 5, it can represent 2 5 , wherein the set value is 2;
  • Each integer value in the time information represents a set length of time.
  • the length of the time indicated by the value can be defined as 1 hour.
  • Step 106 The user equipment accesses the network or does not access the network according to the admission control mode of the access network device.
  • the user equipment when the user equipment is an MTC device, and the admission control mode is to allow the MTC device to access the network, the user equipment receives the RRC connection setup message from the access network device, and the user equipment may be configured according to the RRC.
  • the user equipment When the user equipment is an MTC device, and the admission control mode is that the MTC device is not allowed to access the network, the user equipment receives the RRC connection reject message from the access network device, and the user equipment cannot access the network. Or, when the user equipment is an MTC device, and the admission control mode is that the MTC device is not allowed to access the network, and the current RRC connection of the user equipment is established, the user equipment receives the RRC connection release message from the access network device. At this time, the user equipment needs to release the current RRC connection according to the RRC connection release message.
  • the access network device can adopt different processing modes for different types of user equipment according to the load status of the network side, so that no significant signaling overhead is increased. Under the premise, it can control the impact on the network when the MTC terminal accesses the existing network.
  • the load control is performed by using the CCCH logical channel identifier indication (CCCH LCID) in the Msg3 (message 3) in the RA (random access) process based on the access network device (eNB).
  • the Msg3 message is sent by setting a dedicated CCCH logical channel for the M2M terminal (ie, the MTC device) of the low capability level.
  • the LCID used by the legacy terminal (H2H terminal) in the Msg3 is the UL CCCH.
  • LCID 00000
  • the MTC device can be configured to use a reserved LCID, such as 01100, which is called MTC-UL-CCCH LCID, that is, the eNB can read the UE by using the MTC-UL-CCCH LCID. Identify to obtain the identity information of the user device.
  • the eNB After the eNB acquires the identity of the user equipment, if the user equipment is an MTC device and the eNB does not allow the user equipment to access the network, the eNB needs to send an RRCConnectionReject message to the MTC device, at this time, the eNB and the MTC device pair RRCConnectionReject
  • the wait time wait time in the message is set and understood according to each integer value representing 2 with the integer value being an exponential power.
  • the method for load control provided by Embodiment 2 of the present invention includes the following steps:
  • Step 201 The access network device receives the Msg3 from the user equipment.
  • the processing of the Msgl and the Msg2 is required.
  • the process of transmitting the Msgl and the Msg2 is the same as that of the existing system, and details are not described herein.
  • Step 202 The access network device determines, according to Msg3, a user who is performing random access.
  • the type of device That is, it is determined whether the user equipment is an MTC device.
  • the LCID corresponding to the CCCH SDU (ie, the RRC connection setup request message) carried in the Msg3 of the MTC device with the low UE capability level is set to 010015; after receiving the Msg3, the access network device can pass the received CCCH.
  • the logical channel ID corresponding to the SDU determines whether the user equipment that is performing random access is an MTC device.
  • the access network device needs to obtain the RRC connection establishment reason of the user equipment by using the EstablishmentCause in the RRC connection setup message. For example, when the CCCH LCID is 010015, the current user equipment is an MTC device; when the EstablishmentCause is mo-Signalling The reason for the establishment of the RRC connection is that the UE initiates signaling.
  • Step 203 The access network device performs access control on the user equipment according to the current network load, the MME indication, and the information of the user equipment.
  • the access network device sends an RRC connection setup message to the MTC device.
  • the access network device When all the calling data services are rejected, if the RRC connection establishment reason is to initiate data for the MTC device, the access network device sends an RRC connection reject message to the MTC device; if the current network prohibits all MTC devices from accessing, the access network The device sends an RRC connection reject message to the MTC device.
  • the access network device determines that all MTC devices are not allowed to access according to the current access network load and the admission algorithm, the access network device sends an RRC Connection Reject message to the MTC device.
  • the access network device or the core network device also needs to set a corresponding waiting time according to the type of the user equipment. For example, for a normal H2H terminal, it is set according to the current protocol. If the user equipment needs to be backed off for 16 seconds, the wait time is set to 1111. For the MTC device, if the user equipment needs to be backed off for 16 seconds, the wait time is set to 4, that is, 0100.
  • Step 204 When the user equipment receives the RRCConnectionReject message, obtain the wait time by parsing the message, and start the corresponding timing according to the wait time. Cry.
  • the wait time is set to 0100
  • the user equipment starts the timer T302 according to the wait time, and cannot send the RRCConnectionRequest message again before the timeout.
  • each of the waiting times The integer value represents the set value with the integer value as the power of the exponent; or each integer value in the waiting time represents the set length of time, such as setting the integer 1 to represent the waiting time as 5 seconds, and the integer 2 representing the waiting time as 20 seconds.
  • each integer value in the waiting time represents the set length of time, such as setting the integer 1 to represent the waiting time as 5 seconds, and the integer 2 representing the waiting time as 20 seconds.
  • LCID can be extended to multiple to meet the needs of different levels of MTC equipment. For example, when it is only required to indicate whether the user equipment is an MTC device, a new LCID may be defined. When it is determined that the user equipment is an MTC device, and the priority of the MTC device needs to be indicated, the high priority MTC device is indicated. Or a low-priority MTC device, in which a plurality of LCIDs may be extended to indicate an access terminal type, such as: a new LCID 1 indicates an MTC device, and a new LCID 2 indicates a low-priority MTC device.
  • the load control is performed by using the information in the MAC CE in the Msg3 (message 3) in the RA process based on the access network device (eNB) as an example.
  • the eNB needs to obtain the type information of the user equipment and the RRC connection establishment cause before the load control.
  • the difference from the second embodiment is that the related information is carried in the Msg3 by using the newly added MAC CE and passing the MAC address.
  • the CE and the EstablishmentCause in the RRC Connection Setup message indicate the relevant information.
  • the Msg2 sent by the eNB in the RA process The resource allocated for Msg3, when the MAC layer performs multiplexing processing, and after transmitting the content (RRC connection establishment request) specified in the current Msg3, and having redundant resources, can carry the new MAC CE and The corresponding MAC subheader is used to characterize the identity of the MTC device. It should be noted that when the user equipment type information that needs to be indicated is relatively small, the corresponding MAC CE only includes the MAC sub-header part, and the MAC CE sub-header carries the user equipment type information, and there is no real MAC CE part. Based on the processing manner of the above embodiment of the present invention, the following further describes the fourth embodiment of the present invention. In the fourth embodiment of the present invention, load control is performed by using an RRC connection complete message sent by the access network device (eNB) through the UE as an example.
  • eNB access network device
  • the user equipment identity field is added in the RRC connection complete message, so that the eNB can determine whether the user equipment is an MTC device by reading the RRC connection complete message.
  • the eNB determines that the MTC device load of the access network needs to be controlled (may be determined based on the eNB's own judgment or according to the indication message sent by the core network device), and the eNB determines that the RRC is currently completed according to the RRC connection setup complete message.
  • the RRC connection release message is sent to the user equipment, and the RRC connection release message carries wait time information.
  • the method includes the following steps:
  • the eNB When the eNB receives the message sent by the user equipment, and determines that the current user equipment is an MTC device according to the indication carried in the RRCConnectionSetupComplete message, the eNB sends an RRC connection release message to the MTC device, and the RRC connection release message carries the wait time information.
  • the MTC device After receiving the RRC connection release message, the MTC device starts the corresponding timer according to the wait time information carried in the MTC device (you can reuse the existing timer or add a new timer) before the timer expires. Can't start again RRCConnectionRequest procedure.
  • the core network device sends the indication information to the access network device, and then the access network device performs load control according to the indication information as an example for description. For example, based on the indication information sent by the core network device, the access network device determines the load of the MTC device that needs to control the access network to be the currently selected PLMN for its equivalent PLMN.
  • the core network device sends the indication information to the access network device, the following manner may be adopted:
  • the indication information can be sent by using the S1 interface message:
  • the indication information is sent by using the existing overload start/stop procedure.
  • the overload start and stop information (or the activation or deactivation of a certain type of access rejection) is sent by the overload start message and the overload end message, respectively, in the embodiment of the present invention, the overload start message and
  • the overload action IE in the overload end message carries the indication information, where the indication information is specifically used to indicate the access type restricted by the access network device (for example, restricting the currently selected PLMN to access the network of the MTC device of the equivalent PLMN, and limiting The MTC device actively initiates access due to signaling, etc.).
  • the corresponding restricted content may be added in the overload action IE.
  • the manner of adding the restriction content includes but is not limited to: (a) for the overload start message and the overload stop message, the value of the overload action IE for indicating the overload restriction behavior of the MTC device may be added in an enumeration manner, such as setting a new one.
  • the enumerated value indicates a different scenario, where the scenario in which the added enumerated value can be represented includes, but is not limited to: MTC device access; low priority MTC device access; the currently selected PLMN is the equivalent Equivalent of the PLMN to which it belongs.
  • the MMN device access of the PLMN; the currently selected PLMN belongs to it The MLC device access of the PLMN's VPLMN; the currently selected PLMN is the MTC device access of the PLMN in the preferred PLMN list Prefer (preferred) list (the 'J table) of the device; the currently selected PLMN is the PLMN to which it belongs.
  • the low-priority MTC device of the PLMN is accessed. For other scenarios, details are not described in the embodiment of the present invention.
  • the scene represented by the enumeration value may be the same, that is, the overlay start message and the overload stop message may be used.
  • the scene represented by the above enumeration value is represented by an 8-bit bitmap.
  • the bitmap mode can carry overload control information (ie, indication information) of multiple scenes in one message at a time compared with the enumeration method.
  • the indication information is sent by defining a new M2M dedicated overload control message (a message).
  • the overload start and stop information can be completed by a message (M2M dedicated overload control message), and the M2M dedicated overload control message is used.
  • M2M dedicated overload control message Two IEs are defined to send overload start information and overload stop information respectively. These two IEs are of the choice type, that is, two IEs cannot appear at the same time.
  • the manner of sending the overload control information (ie, the indication information) in the two IEs may also use an enumeration or a bitmap manner to indicate different overload control scenarios, and the manner and manner of indicating different overload control scenarios (1)
  • the processing is the same, and will not be described here.
  • the indication information is sent by defining a new M2M dedicated overload start message and an M2M dedicated overload stop message.
  • the overload start message and the overload stop message are dedicated to the MTC device, so that the overload control message with the conventional H2H terminal (ie, the existing method described in the mode 1) can be avoided.
  • Overload start message and overload stop The news affects.
  • the manner in which the M2M dedicated overload start message and the M2M dedicated overload stop message indicate the MTC overload control information may be in an enumerated manner, a bitmap manner, or other manners to indicate multiple overload control scenarios, where different overload control scenarios are indicated.
  • the processing in the mode (1) is the same, and will not be described here.
  • Iu interface messages can be used to send indications:
  • the indication information is sent based on the existing overload procedure.
  • the current UMTS system sends overload start and stop information through the overload message, and the overload start and stop information are sent by the overload start IE and the overload end IE respectively.
  • the two IEs are of the choice type, that is, the two IEs cannot appear at the same time.
  • the overload start IE and the overload of the overload message may be performed in the current overload start IE and the overload end IE.
  • End IE adds the corresponding restricted content.
  • the restricted content for different MTC scenarios can be added in the existing overload start IE and overload end IE.
  • the new M2M dedicated overload start IE and the overload end IE may be added to the overload message, and the newly added IE may indicate multiple overload control scenarios by using enumeration mode, bitmap mode or other manners, and the indication is different.
  • the manner of the overload control scenario is similar to that of the LTE system, and will not be described here.
  • the mode (2) is similar to the mode (3) in the LTE system by using the new M2M-specific overload start message and the M2M-specific overload stop message, and is not described here.
  • the load control is performed based on the indication information sent by the access network device through the core network device.
  • the terminal by adding a terminal identity indication field in the RRC connection complete message, indicating that the MTC device is a low-priority MTC device, and adding a PLMN to which the MTC device belongs
  • the currently selected PLMN is an equivalent PLMN of the MTC device, so that the access network device can determine whether the terminal belongs to the MTC device and the MTC device by reading the RRC connection complete message.
  • the access network device determines the load of the low priority MTC device that needs to control the access network to be the currently selected PLMN as its equivalent PLMN.
  • the access network device determines, according to the RRC connection setup complete message, that the user equipment that is currently completing the RRC connection establishment is the low priority MTC device whose PLMN is the equivalent PLMN, sends an RRC connection release message to the user equipment, and the The RRC connection release message carries wait time information.
  • the method includes the following steps:
  • the access network device When the access network device receives the message sent by the user equipment, and according to the indication carried in the RRCConnectionSetupComplete message from the user equipment, it is determined that the user equipment that is currently completing the RRC connection establishment is the low priority MTC device whose selected PLMN is the equivalent PLMN. And determining, according to the indication sent by the core network device, that the access network device needs to send the RRC connection release to the MTC device when the load of the low priority MTC terminal of the currently selected PLMN is the equivalent PLMN.
  • the message, and the RRC connection release message carries the wait time information.
  • the PLMN (HPLMN) to which the MTC device belongs and the currently selected PLMN relationship type may include, but are not limited to: the currently selected PLMN of the MTC device is the equivalent Equivalent PLMN of the PLMN to which it belongs; the MTC device is currently selected.
  • the PLMN is the VPLMN of the PLMN to which it belongs; the PLMN currently selected by the MTC device is the PLMN in the preferred PLMN list Prefer list of the device; the MTC device is not in the preferred PLMN list on the HPLMN or SIM card (MTC Devices that are not on Their HPLMN or a PLMN in the (U)SIM's preferred PLMNs List ); MTC devices are not in HPLMN or equivalent HPLMN (MTC Devices that are not on their HPLMN or an Equivalent HPLMN); MTC devices are not in HPLMN (MTC Devices that are not on their HPLMN).
  • HPLMN the PLMN of the IMSI in the USIM card of the UE
  • EPLMNN is a list: optionally stored in the USIM card, and is considered equivalent to HPLMN when the PLMN is selected.
  • VPLMN When the EPLMN list does not exist, VPLMN refers to all PLMNs different from HPLMN; and when EPLMN list exists, VPLMN refers to all PLMNs different from EHPLMN;
  • USIM's perferred PLMN's list stored in The USIM consists of two parts: "User controlled PLMN selector with Access Technology" and "Operator controlled PLMN selector with Access Technology".
  • the format of the PLMN (HPLMN) to which the MTC device belongs and the currently selected PLMN relationship information in the RRCConnectionSetupComplete includes, but is not limited to, the following manners:
  • the mode (1) adopts the bit mapping bitmap method: that is, each bit in the bitmap represents a relationship. If the currently selected PLMN of the MTC device is equivalent to the PLMN to which it belongs, the Equivalent PLMN is represented by the first bit. When it is "1", it indicates that the currently selected PLMN of the MTC device is the equivalent Equivalent PLMN of the PLMN to which it belongs. "0" means that the PLMN currently selected by the MTC device is not the equivalent Equivalent PLMN of the PLMN to which it belongs, and the PLMN (HPLMN) to which the other MTC device belongs and the currently selected PLMN relationship can be indicated in a similar manner. This will not be repeated here.
  • Mode (2) adopts enumeration mode: If it is necessary to indicate the PLMN (HPLMN) to which the four MTC devices belong and the currently selected PLMN relationship, it can correspond to 4 code points (represented by two bits), and each code point represents a relationship.
  • the MTC terminal After receiving the RRC connection release message, the MTC terminal starts the corresponding timer according to the wait time information carried in it (you can reuse the existing timer, or add a new timer), before the timer expires.
  • the RRCConnectionRequest procedure cannot be initiated again.
  • the seventh embodiment of the present invention further provides an access network device, as shown in FIG. 3, including:
  • the obtaining module 11 is configured to obtain type information of the user equipment.
  • a determining module 12 configured to determine, according to the type information and a load condition, an admission control manner of the user equipment
  • the control module 13 is configured to control the user equipment to access the network according to the admission control manner.
  • the obtaining module 11 is configured to receive the type indication information from the user equipment, where the type indication information indicates the type information of the user equipment, and determine the type of the user equipment according to the type indication information. information.
  • the acquiring module 11 is configured to receive a MAC CE indication sent by the user equipment, where the MAC CE indication carries the type indication information of the user equipment, or receives the CCCH logical channel identifier sent by the user equipment. Instructing, the CCCH logical channel identifier indication carries the type indication information of the user equipment; or receiving an RRC connection setup request message sent by the user equipment, where the RRC connection setup request message carries the user equipment.
  • the RRC connection setup complete message is sent by the user equipment, and the RRC connection setup complete message carries the type indication information of the user equipment.
  • the type indication information is used to indicate whether the user equipment is an MTC device, and/or to indicate a relationship between the PLMN to which the user equipment belongs and the currently selected PLMN.
  • the determining module 12 is specifically configured to determine an admission control manner of the user equipment according to the type information, the load status, and indication information of a core network device.
  • the access network device further includes:
  • the receiving module 14 is configured to receive, by the S1 interface message, the indication information from the core network device in the LTE system; or, in the UMTS system, receive the indication information from the core network device by using the Iu interface message.
  • the admission control mode includes allowing the MTC device to access the network or not allowing the MTC device to access the network;
  • the determining module 12 is specifically configured to: when determining, according to the type information, that the user equipment is an MTC device,
  • the MTC device Determining that the MTC device is allowed to access the network according to the load condition; or not allowing the MTC device to access the network; or determining, according to the indication information of the core network device, that the MTC device is allowed to access the network; or not allowing The MTC device accesses the network; or, according to the load condition and the indication information of the core network device, determines that the MTC device is allowed to access the network; or the MTC device is not allowed to access the network; or, according to the MTC device
  • the relationship between the PLMN and the currently selected PLMN, and the indication information of the core network device determines that the MTC device is allowed to access the network; or the MTC device is not allowed to access the network; or, according to the PLMN to which the MTC device belongs and the current selection Determining the relationship of the PLMN and the load status determination to allow the MTC device to access the network; or disallowing the MTC device to access the network; or, according to the relationship between the PLMN to which the
  • the admission control mode includes allowing the MTC device to access the network or not allowing the MTC device to access the network;
  • the control module 13 is specifically configured to: when the MTC device is allowed to access the network, send an RRC connection setup message to the MTC device, where the MTC device accesses the network according to the RRC connection setup message; or, Allowing the MTC device to access the network and allowing the NAS service request of the MTC device when the current RRC connection of the MTC device is established; or sending the MTC device to the MTC device when the MTC device is not allowed to access the network RRC connection reject message, notifying the MTC device that the MTC device is not allowed to access the network; or, when the MTC device is not allowed to access the network and the current RRC connection of the MTC device is established, sending the MTC device to the MTC device The RRC connection release message notifies the MTC device to release the current RRC connection.
  • the modules of the device in the embodiment of the present invention may be integrated into one body or may be separately deployed.
  • the above modules can be combined into one module, or can be further split into multiple sub-modules.
  • a user equipment is also provided in Embodiment 8 of the present invention. As shown in FIG. 4, the method includes:
  • a determining module 21 configured to determine type information of itself
  • the sending module 22 is configured to send the type information to the access network device, where the access network device determines the admission control mode of the user equipment according to the type information and the load condition.
  • the sending module 22 is specifically configured to send, to the access network device, a MAC CE indication that carries the type indication information of the user equipment, or send the type indication information that carries the user equipment to the access network device.
  • the RRC connection establishment request message carrying the type indication information of the user equipment is sent to the access network device; or the type of the user equipment is sent to the access network device.
  • the type information indicating the type information of the user equipment is indicated in the type indication information.
  • the type indication information is used to indicate whether the user equipment is an MTC device, and/or to indicate a relationship between the PLMN to which the user equipment belongs and the currently selected PLMN.
  • the MTC device further includes: a processing module 23, configured to receive an RRC connection setup message from the access network device when the admission control mode is to allow the MTC device to access the network And establishing a message access network according to the RRC connection; or, when the admission control mode is to allow the MTC device to access the network and the current RRC connection of the MTC device is established, initiate a NAS service request; or, when admission control When the MTC device is not allowed to access the network, the RRC connection reject message is received from the access network device, and the network is not allowed to access the network; or the admission control mode is not allowed to be connected to the MTC device.
  • Upon entering the network and the current RRC connection of the MTC device is established receiving an RRC connection release message from the access network device, and releasing the current RRC connection according to the RRC connection release message.
  • the modules of the device in the embodiment of the present invention may be integrated into one body or may be separately deployed.
  • the above modules can be combined into one module, or can be further split into multiple sub-modules Module.
  • a core network device is also provided in the ninth embodiment of the present invention. As shown in FIG. 5, the method includes:
  • the obtaining module 31 is configured to obtain indication information corresponding to the user equipment.
  • the sending module 32 is configured to send the indication information to the access network device, where the access network device determines, according to the indication message, an admission control mode of the user equipment.
  • the sending module is specifically configured to: send, by using an S1 interface message, the indication information to the access network device in an LTE system; or, in a UMTS system, send the indication information to an office by using an Iu interface message.
  • the access network device is specifically configured to: send, by using an S1 interface message, the indication information to the access network device in an LTE system; or, in a UMTS system, send the indication information to an office by using an Iu interface message.
  • the modules of the device in the embodiment of the present invention may be integrated into one or may be separately deployed.
  • the above modules can be combined into one module, or they can be further split into multiple sub-modules.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

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Abstract

La présente invention concerne un procédé de régulation de charge et un dispositif associé. Selon ledit procédé : un dispositif de réseau d'accès obtient des informations sur le type d'un UE; le dispositif de réseau d'accès décide du mode de régulation des admissions destiné à l'UE en fonction des informations sur le type et de l'état de la charge; le dispositif de réseau d'accès régule l'accès de l'UE au réseau en fonction dudit mode de régulation des admissions. Dans les modes de réalisation de la présente invention, sur la base des informations sur le type d'un UE, un dispositif de réseau d'accès peut adopter différents modes de traitement destinés à différents types de terminaux en fonction de la charge du réseau, régulant ainsi l'impact sur le réseau sans qu'il soit nécessaire d'augmenter de façon significative le coût du signal lorsque des terminaux de MTC accèdent au réseau concerné.
PCT/CN2011/080175 2010-09-30 2011-09-26 Procédé de régulation de charge et dispositif associé WO2012041204A2 (fr)

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