WO2018133604A1 - Procédé de commande d'accès, élément de réseau, équipement utilisateur et support de stockage informatique - Google Patents

Procédé de commande d'accès, élément de réseau, équipement utilisateur et support de stockage informatique Download PDF

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Publication number
WO2018133604A1
WO2018133604A1 PCT/CN2017/116875 CN2017116875W WO2018133604A1 WO 2018133604 A1 WO2018133604 A1 WO 2018133604A1 CN 2017116875 W CN2017116875 W CN 2017116875W WO 2018133604 A1 WO2018133604 A1 WO 2018133604A1
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Prior art keywords
data
access
mode
threshold
signaling
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PCT/CN2017/116875
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English (en)
Chinese (zh)
Inventor
戴谦
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0247—Traffic management, e.g. flow control or congestion control based on conditions of the access network or the infrastructure network

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to an access control method, an access network element, a core network element, and a user equipment (User Equipment, UE) and a computer storage medium.
  • an access control method an access network element, a core network element, and a user equipment (User Equipment, UE) and a computer storage medium.
  • UE User Equipment
  • the IoT device has a short duration of access to the network, and the amount of data transmitted is small, but the amount of equipment is very large.
  • the control plane signaling overhead is greater than the user plane data amount, which leads to low system transmission efficiency and corresponding network element overload and congestion problems.
  • the embodiments of the present invention are directed to providing an access control method, an access network element, a core network element, a user equipment, and a computer storage medium, which partially solve the above problems.
  • a first aspect of the embodiments of the present invention provides an access control method, including:
  • the access network element When the network load of the core network or the access network meets the overload condition, or the congestion condition of the core network or the access network complies with the congestion condition, the access network element utilizes dedicated Radio Resource Control (RRC) signaling. An access restriction indication is sent to the UE.
  • RRC Radio Resource Control
  • a second aspect of the embodiments of the present invention provides an access control method, including:
  • the inbound network element is sent to the UE to limit access by the UE.
  • a third aspect of the embodiments of the present invention provides an access control method, including:
  • an access restriction indication sent by the access network network element by using the dedicated RRC signaling where the access restriction indication is the network element of the access network, and the network load of the core network or the access network meets an overload condition. Or when the congestion condition of the core network or the access network meets a congestion condition;
  • a fifth aspect of the embodiments of the present invention provides an access network element, including:
  • the first sending unit is configured to: when the network load of the core network or the access network meets an overload condition, or the congestion condition of the core network or the access network meets a congestion condition, the access network element uses dedicated RRC signaling to the user.
  • the device UE sends an access restriction indication.
  • a second sending unit configured to: when the network load of the core network meets an overload condition, or the congestion status of the core network meets the congestion condition, send an access restriction indication to the access network element; wherein the access The restriction indication is used by the access network element to send to the UE to limit access by the UE.
  • a sixth aspect of the embodiments of the present invention provides a user equipment UE, including:
  • the access control method, the access network element, the core network element, the user equipment, and the computer storage medium provided by the embodiments of the present invention may be through dedicated RRC signaling when the access network or the core network is overloaded or congested.
  • the UE sends an access restriction indication, indicating that the access restriction rule for prohibiting at least part of the UE access is valid, and the UE continues to initiate the access if the core network and/or the access network are overloaded or severe congestion occurs.
  • the resulting overload or congestion situation of the access network or the core network is further serious, thereby alleviating the overload or congestion of the current access network and/or the core network.
  • FIG. 2 is a schematic flowchart of a second access control method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a third access control method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • Step S110 When the network load of the core network or the access network meets the overload condition, or the congestion status of the core network or the access network complies with the congestion condition, the access network element sends the connection to the user equipment UE by using dedicated RRC signaling. Enter the limit indication.
  • the access control method provided in this embodiment is a method applied to a network side, for example, a method applied to a network element of an access network.
  • the access network element may include: various network elements located in the access network. For example, a method in an evolved Node B (eNB).
  • the access network element may be the eNB or next generation Node B (Gnb) or other wireless access node (Access Point, AP).
  • eNB evolved Node B
  • Gnb next generation Node B
  • AP wireless access node
  • the network element of the core network may be: various network elements located in the core network.
  • a typical core network element may include: a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • the step S110 in this embodiment may include:
  • Step S111 When the network load of the core network or the access network meets the overload condition, or the congestion condition of the core network or the access network meets the congestion condition, acquire an overload condition or a congestion status with the access network or the core network.
  • Adapted access restriction indication When the network load of the core network or the access network meets the overload condition, or the congestion condition of the core network or the access network meets the congestion condition, acquire an overload condition or a congestion status with the access network or the core network.
  • the access control method provided in this embodiment is mainly used by the network element of the access network to send the access restriction indication to a single UE in a unicast manner.
  • the access control method provided in this embodiment is mainly for the UE to establish the current connection with the access network element, and the access network element needs to release the connection and block the UE in order to alleviate the overload or congestion. Immediately after the connection is released, the application status of the next connection is initiated based on the access requirement. Therefore, in the embodiment, the access network element sends the access restriction indication to the UE through dedicated RRC signaling, or sends the UE with the current connection with the access network element by using dedicated RRC signaling.
  • the access restriction indication may be various UEs that have been connected to the access network element network element, for example, an Internet of Things UE.
  • the dedicated RRC signaling includes an RRC connection release signaling, and the RRC connection release signaling is used to trigger the UE to release the signaling of the current connection.
  • the access restriction indication is carried in the RRC.
  • the UE is released from the current connection, and the access restriction rule currently in effect is notified by the access restriction indication, and the UE initiates the next access based on the access requirement, according to the The current access restriction rule determines whether to initiate the access, so as to control the initiation of the next access of the UE, thereby delaying the next access of at least part of the UE or reducing the initiation of the access within the specified time within the current time.
  • the number of UEs thus alleviating overload and congestion.
  • the RRC connection reject signaling is used by the access network element to reject the UE that is currently requesting access.
  • the RRC connection reject signaling carries the access restriction indication, and may be rejected by the UE.
  • the access through the transmission of the access restriction indication, prompts the UE to know the current access restriction rule.
  • the effective access restriction rule is adopted. The query can know whether it is allowed to initiate access, thereby implementing control of the next access of the UE.
  • the RRC connection reestablishment reject signaling which is a rejection of the connection reestablishment request initiated by the access network element to the UE, may be used to reject the connection reestablishment of the current access.
  • the access network element carries the access restriction indication in the RRC connection re-establishment rejection signaling, and implements the rejection of the connection reconnection (corresponding to the current access), which can alleviate the overload or congestion phenomenon.
  • the other party can also control the next access of the UE.
  • the dedicated RRC signaling may be other types of RRC signaling, in addition to the foregoing RRC connection reject signaling, RRC connection release signaling, and RRC connection reestablishment rejection signaling.
  • the manner of obtaining the access restriction indication may be that the access network element itself generates the access restriction indication according to the load status or the congestion status of the access network or the core network, or may be the slave network.
  • the network element is received, for example, from a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • the network element forming the access restriction indication is preset with a correspondence between a load rate or a congestion status and a corresponding access restriction indication, and when an access restriction indication that needs to be sent to the UE is formed, the current The information about the load rate and the congestion status is used to query the corresponding relationship, and the access restriction indication that matches the load rate and the congestion status in the corresponding relationship is selected as the access restriction indication that needs to be sent to the UE.
  • the access restriction indication there are multiple ways to generate the access restriction indication, and are not limited to the above examples.
  • the core network or the access network may be considered when the load rate of the access network or the core network reaches the load rate threshold or the load exceeds the load threshold.
  • the network load meets the overload condition.
  • the determining the network load of the core network in the embodiment may include: determining whether the current load rate of the MME or the current load amount reaches a corresponding threshold.
  • the network load of the access network conforms to the overload condition may include: determining whether a current load rate or a load quantity of the base station reaches a corresponding threshold. For another example, it is determined whether the current load level of the access network or the core network is a predetermined load level, and if it is a predetermined load level, the preset overload condition may be considered to be met.
  • the congestion status of the core network or the access network may be represented by the load status of the current core network or the access network, or may be characterized according to parameters such as the available resource status of the current network or the number of requests to be responded.
  • the congestion condition satisfies certain conditions, the core network or the access network may be considered to be congested, and congestion needs to be alleviated. For example, if the number of requests to be responded in the current MME or eNB queue exceeds the threshold, or the usage rate of the processing resources of the current MME or eNB reaches the upper usage limit, etc., congestion may be considered to meet the congestion condition.
  • the access restriction indication is used to indicate an effective access restriction rule.
  • the access restriction rule may include at least one of the following:
  • Rule 1 Prohibit the use of user plane optimization data transmission (UP) mode or radio resource control connection establishment (legacy) mode to initiate the calling data service mo-data, the calling abnormal data mo-ExceptionData, the delay tolerant access service delayTolerantAccess Or the caller of the calling signaling service mo-signaling; the rule 1 may include at least one of the following: prohibiting the use of the UP mode to initiate the calling data service mo-data, the calling abnormal data mo-ExceptionData, delay tolerance Incoming service delayTolerantAccess, or caller signaling service mo-signaling call; prohibiting the use of legacy mode to initiate the caller data service mo-data, the caller's abnormal data mo-ExceptionData, the delay tolerant access service delayTolerantAccess, or the caller Signaling service mo-signaling call
  • Rule 2 prohibiting the use of the control plane to optimize the data transmission CP mode to initiate the call of the mo-ExceptionData, the delayTolerantAccess, or the mo-signaling;
  • Rule 3 prohibiting a predetermined proportion of UEs from using the CP mode to initiate the call of the mo-data
  • Rule 4 prohibiting a UE that supports only the CP mode from initiating the call of the mo-data, the mo-ExceptionData, the delayTolerantAccess, or the mo-signaling;
  • Rule 5 prohibiting a UE that supports both the CP mode and the UP mode from initiating the call of the mo-data, the mo-ExceptionData, the delayTolerantAccess, or the mo-signaling;
  • Rule 6 prohibiting a UE that supports both the CP mode and the UP mode from using the CP mode to initiate the call of the mo-data, the mo-ExceptionData, the delayTolerantAccess, or the mo-signaling;
  • Rule 7 The UE that supports both the CP mode and the UP mode is prohibited from initiating the call of the mo-data, or the mo-ExceptionData, the delayTolerantAccess, or the mo-signaling by using the UP mode or the legacy mode; At least one of the following is included: a UE that supports both the CP mode and the UP mode is prohibited, and the call is initiated by using the UP mode, or the call of the mo-ExceptionData, the delayTolerantAccess, or the mo-signaling; The UE in the mode and the UP mode initiates the call of the mo-data or the mo-ExceptionData, the delayTolerantAccess or the mo-signaling in a legacy manner;
  • Rule 9 prohibiting the sending of the non-IP-data service in which the single data packet exceeds the first preset data packet length threshold, and the non-IP-data service in which the accumulated connection transmission data amount is greater than the first accumulation threshold, and the traffic exceeds The non-IP-data service of the first preset traffic threshold or the non-IP-data service with consecutive data packets, wherein the non-IP-data service with consecutive data packets is: Transmitting the non-IP-data service of multiple data packets through one connection;
  • Rule 11 prohibiting the sending of the IP-data service whose single data packet exceeds the second preset data packet length threshold, the IP-data service whose primary connection accumulated data volume is greater than the second cumulative threshold, and the traffic exceeding the second preset traffic The IP-data service of the threshold;
  • Rule 12 It is forbidden to use the CP mode to initiate services that exceed the third preset packet length threshold, the services whose accumulated data exceeds the third cumulative threshold in one connection, the traffic whose traffic exceeds the third preset traffic threshold, or have continuous data packets. business;
  • Rule 13 It is forbidden to use the UP mode to initiate services that are lower than the fourth preset packet length threshold, the services whose accumulated data volume is lower than the fourth cumulative threshold, or the traffic whose traffic is lower than the fourth preset traffic threshold.
  • the foregoing multiple restricted access rules may be pre-stored in the UE and the access network element, or may be pre-negotiated by the UE and the access network element, or may be pre-defined by the communication protocol.
  • the access network element and the UE may have corresponding paths to obtain the access restriction rule, and obtain an access restriction indication and an access restriction rule.
  • the subsequent UE can perform or implement the access restriction rule according to the access restriction indication, thereby implementing access control and alleviating a large number of UE-initiated access, especially the IoT terminal accessing the network at the same time. The resulting overload or congestion.
  • the UE randomly generates a random number between 0 and 1 before initiating the access, and compares the random number with the predetermined ratio, if the random number If the ratio is greater than the predetermined ratio, the UE is allowed to initiate access, otherwise the UE is prohibited from initiating access.
  • the UE may be allowed to initiate access, otherwise the UE is prohibited from accessing.
  • the CP mode includes: the terminal directly transmits data to the MME through control plane signaling, for example, a non-access stratum (NAS) message, and the MME forwards the data to the external network instead of using the gateway.
  • the MME needs to participate in the transmission of data in the CP mode. If there are too many UEs in the CP mode, the MME may be overloaded or congested.
  • the UP mode is: before the connection between the UE and the network side is released, the network side saves the historical context of the UE, and uses the saved context to establish a connection access mode when the terminal initiates the connection with the network side next time.
  • the access mode requires a storage network element storage context such as a base station. If too many UEs are accessed or too many contexts are saved, the cache resources are reduced. In the next access, the previous save may be needed.
  • the context also requires a certain amount of processing resources.
  • the processing resources herein may include resources such as calculations, queries, and retrievals provided by the processor or processing circuitry.
  • the legacy mode is a manner of establishing a connection by using RRC signaling.
  • the non-network protocol (IP) data service may be simply referred to as a non-IP-data service; the network protocol IP data service may be referred to as an IP-data service.
  • IP network protocol
  • the data packet corresponding to the non-IP-data service does not carry the destination IP address, and is used for routing and forwarding based on other addresses than the destination IP address, for example, routing and forwarding based on the media access control (MAC) address.
  • MAC media access control
  • the data packet corresponding to the IP-data service carries an IP address, and uses an IP address-based route forwarding.
  • the congestion condition is loaded, especially when the current condition of the MME loads the overload condition or the congestion.
  • the indication information sent by the network element of the access network may be used to indicate that some or all of the terminals are prohibited from using the CP to initiate the access, or the access restriction rule for instructing all or part of the service to initiate the access by using the CP is effective. To alleviate the overload or congestion of the core network.
  • the indication information sent by the access network element is used to indicate that all or part of the terminals are allowed to access in the UP mode, or all or part of the services are accessed in the UP mode.
  • the restriction rule takes effect, thereby alleviating the overload or congestion of the access network.
  • the access restriction rule may be divided into two parts, the first part is the rule content, and the second part is the restriction parameter of the rule execution.
  • the limit parameter may include one or more of a time parameter, a proportional parameter, and a data model parameter.
  • the limit parameter may also include an exception parameter or the like.
  • the exception parameter here can be at least which special case corresponds to the case where the rule content does not take effect.
  • the access restriction rule further includes at least one of a time parameter, a proportional parameter, and a data model parameter;
  • the time parameter is used to specify an effective duration of the access restriction rule
  • the data model parameters include: a data model threshold;
  • the data model threshold includes at least one of the following;
  • the threshold of the number of data of consecutive data packets is the threshold of the number of data of consecutive data packets
  • the frequency or period threshold for the transmission of consecutive packets is the frequency or period threshold for the transmission of consecutive packets.
  • the restriction parameter may be separately written in each bar access restriction rule, and the one restriction parameter may also be shared by multiple restriction rules at the same time.
  • the time parameter may be a parameter shared by multiple access restriction rules.
  • the time parameter may be sent by the base station to the UE, or the base station may indicate to the UE.
  • the access network element determines the access restriction indication that needs to be sent to the UE, and at least two are provided below:
  • the access network element forms the access restriction indication by itself.
  • the access network element When the network load of the core network meets the overload condition, or the congestion status of the core network meets the congestion condition, the access network element receives the access restriction indication from a core network element.
  • the MME currently has an overload or congestion condition, and the MME forms the access restriction indication, and sends the formed access restriction indication to the access network element, so that the access network element can receive the Access restriction indication.
  • the access restriction indication element formed by the access restriction network element and the core network element may be used to indicate an access restriction rule that is currently in effect.
  • the access restriction rule herein can be referred to the corresponding part of the foregoing embodiment, and is not repeated here.
  • the access network if the network load of the access network meets the overload condition of the access network, or the congestion status of the access network complies with the congestion condition of the access network, the access network generates an access restriction indication by itself; At the same time, the network load of the core network loads the overload condition of the core network, or the congestion status of the core network conforms to the congestion condition of the core network, and the core network also generates an access restriction indication based on its own load or congestion condition, and the generated connection is generated. The incoming limit indication is sent to the access network. At this point, the access network may acquire two access restriction rules at the same time.
  • the access restriction indication restricts the UE access by the access restriction rule, there is no conflict, and the access network may separately limit the access generated by the generated network or the core network.
  • the indication is transmitted to the UE.
  • the access restriction indication generated by itself and the access restriction indication generated by the core network may be compared, and the same indication is repeatedly indicated in the two indications.
  • the indication information that the rule is valid is sent to the UE through dedicated RRC signaling.
  • an access restriction indication may be sent, so that the access of the UE may be reduced, so that only one access restriction indication may be sent, for example, random selection.
  • An access restriction indication is sent. For example, because the access network directly accesses the UE, the access restriction indication generated by the access network element may be preferentially delivered. Certainly, in some embodiments, an access restriction indication may be selected according to a pre-configured priority.
  • step S110 may include:
  • the access network element When the network load of the core network meets the overload condition, or the congestion condition of the core network meets the congestion condition, the access network element receives the access restriction indication from the S1 interface.
  • the access network element When the core network is overloaded or congested, the access network element receives the access restriction indication sent by the core network element, for example, receives the access restriction indication sent by the MME.
  • the access restriction indication sent by the core network element is sent through the S1 interface.
  • the MME sends an S1 message to the access network element through the S1 interface, where the S1 message carries the access restriction indication.
  • the S1 message includes, but is not limited to, an Over Load Start message.
  • the access network element When the access network element receives the access restriction indication, it is forwarded to the corresponding UE by using dedicated RRC signaling, thereby implementing access control to the UE, thereby controlling the number of UE accesses in a specific time, and the UE initiates The number of access requests, etc., thereby alleviating the frequent occurrence of congestion and overload phenomena.
  • this embodiment provides an access control method, including:
  • Step S210 When the network load of the core network meets an overload condition, or the congestion condition of the core network meets the congestion condition, sending an access restriction indication to the access network network element, where the access restriction indication is used for The access network element is sent to the UE to limit access by the UE.
  • the core network element sends an access restriction indication to the access network element when determining that the network load of the core network meets the overload condition or the congestion status of the core network meets the congestion condition.
  • the access restriction indication may be carried in various messages sent by the MME to the base station, for example, an S1 message that may be sent by the MME.
  • the S1 message here can be a message sent by the S1 interface.
  • the access restriction indication here may be a message indicating that the corresponding access restriction rule is valid.
  • the forbidden service type may be a service type that is forbidden to access.
  • the type of service here may be the aforementioned IP data service or non-IP data service.
  • the data packet corresponding to the IP data service carries the destination IP address, and is forwarded by the destination IP address.
  • the data packet corresponding to the non-IP data service does not carry the destination IP address, and is directly forwarded to the corresponding server or the server group according to the service type and other parameters, but the IP data service and the non-IP data service are The division is not limited to this.
  • the forbidden access mode may be an access mode in which the UE is prohibited from accessing the access mode.
  • the access mode may be the foregoing UP mode, CP mode, or legacy mode.
  • the access restriction indication is performed, and the current access restriction rule is indicated to the UE.
  • access restriction rules refer to the corresponding part above, which will not be repeated here.
  • the time parameter is used to specify an effective duration of the access restriction rule
  • the ratio parameter is used to indicate a proportion of user equipment that restricts access or an effective probability of the access restriction rule
  • the data model parameters include: a data model threshold;
  • the data model threshold includes at least one of the following;
  • the threshold of the number of data of consecutive data packets is the threshold of the number of data of consecutive data packets
  • the frequency or period threshold for the transmission of consecutive packets is the frequency or period threshold for the transmission of consecutive packets.
  • the restriction parameter is used together with the access restriction content in the access restriction rule to limit information such as the execution probability or the execution duration of the access restriction content when the access restriction rule takes effect.
  • the step S210 may include: when the network load of the core network meets the overload condition, or the congestion status of the core network meets the congestion condition, to the access network through the S1 interface.
  • the element sends the access restriction indication.
  • the access restriction indication is carried in an S1 message sent through the S1 interface.
  • the access network element receives the S1 message, for example, an overload message, the access restriction indication may be extracted therefrom.
  • this embodiment provides an access control method, including:
  • Step S310 The UE receives an access restriction indication that is sent by the access network element by using the dedicated RRC signaling, where the access restriction indication is the network element of the access network, and the network load of the core network or the access network is consistent.
  • the overload condition, or the congestion condition of the core network or the access network is sent when the congestion condition is met;
  • Step S320 Determine, according to the access restriction rule corresponding to the access restriction indication, whether to initiate the next access.
  • the UEs in this embodiment may be various types of UEs, for example, mobile phones, tablets, and the like, and may also be in-vehicle UEs.
  • the UEs may also be various IoT UEs.
  • the UE may receive the access restriction indication through dedicated RRC signaling.
  • the access restriction indication here may be formed by the access network element itself or may be received from the core network element.
  • the access restriction indication here is used to indicate an access restriction rule that is valid for a period of time after the current time or the current time.
  • the UE determines the effective access restriction according to the access restriction indication when there is an access requirement next time.
  • the rule determines whether it is allowed to initiate access, and initiates access if allowed. Otherwise, the access requirement is blocked and access is not performed to reduce the congestion or overload of the access network or the core network.
  • the dedicated RRC signaling may be RRC Connection Rejection Signaling, RRC Connection Release Signaling, and RRC Connection Reestablishment Rejection Signaling.
  • the RRC signaling itself has the function of releasing the current connection or rejecting the current connection, which is equivalent to releasing or denying the current access, and also carries the access restriction indication in the signaling, which can be used to control the UE.
  • the next access is initiated, so that one signaling has multiple functions, which reduces the number and number of signaling interactions between the access network element and the UE, and reduces signaling overhead.
  • the access restriction rule may be divided into an access restriction content and a restriction parameter, and the restriction parameter may include a time parameter, a proportional parameter, or an access model parameter.
  • the restriction parameter may include a time parameter, a proportional parameter, or an access model parameter.
  • This embodiment provides an access network element, including:
  • the first sending unit is configured to: when the network load of the core network or the access network meets an overload condition, or the congestion condition of the core network or the access network meets a congestion condition, the access network element uses dedicated RRC signaling to the user.
  • the device UE sends an access restriction indication.
  • the access network element may be various types of devices available for access by the UE, for example, an eNB or the like.
  • the first sending unit in this embodiment may be configured to send a dedicated RRC signaling to various types of UEs, and may be configured to send the access restriction indication to the UE.
  • the eNB also includes a processor and/or a storage medium, etc., the processor can be used to form the access restriction indication, and the storage medium can be used to store various information.
  • the processor is connectable to the transmitting antenna, and can control data transmission of the first sending unit.
  • the access network element in the embodiment may be one of the network elements that implement the access control method.
  • the access restriction indication in this embodiment is also an access restriction rule that is in effect.
  • the related content of the access restriction rule can be referred to in the foregoing embodiment, and is not repeated here.
  • the network element further includes:
  • Get the unit configured to indicate at least one of the following:
  • the access network element forms the access restriction indication by itself;
  • the access network element When the network load of the core network meets the overload condition, or the congestion status of the core network meets the congestion condition, the access network element receives the access restriction indication from a core network element.
  • the obtaining unit may be configured to receive an access restriction indication from the core network element, and may be configured to be connected to the first sending unit, and configured to receive the access restriction from the core network element. Indicate and send to the UE.
  • the obtaining unit may further correspond to a processor, and the processor may generate the access restriction indication by itself according to the currently detected load condition or congestion condition.
  • the acquiring unit is configured to: when the network load of the core network meets the overload condition, or the congestion status of the core network meets the congestion condition, the access network element from the S1 interface Receiving the access restriction indication.
  • the receiving interface may receive an S1 message from a network element such as an MME through an S1 interface, and then extract the access restriction indication from the S1 message.
  • the dedicated RRC signaling includes at least one of the following:
  • This embodiment provides a core network element, including:
  • a second sending unit configured to: when the network load of the core network meets an overload condition, or the congestion status of the core network meets the congestion condition, send an access restriction indication to the access network element; wherein the access The restriction indication is used by the access network element to send to the user equipment UE to limit access by the UE.
  • the network element of the core network in this embodiment may include any network element located in the core network, which may be an MME.
  • the access restriction indication includes at least one of the indication information of the forbidden service type, the indication information of the forbidden access mode, and the indication information of the forbidden access to the UE type.
  • the access restriction indication, the indicated access restriction rule can be referred to the foregoing part, and is not repeated here.
  • the second sending unit is specifically configured to: when the network load of the core network meets the overload condition, or the congestion status of the core network meets the congestion condition, The network access NE sends the access restriction indication.
  • the core network element may further include other structures, such as a processor or processing circuitry, coupled to the second transmitting unit for generating the access restriction indication.
  • the generation of the access restriction indication may also refer to the foregoing steps S111 and S112, and only the generating entity is a core network element, according to the load status and congestion status of the core network and the core network.
  • this embodiment provides a user equipment UE, including:
  • the access unit 320 is configured to determine whether to initiate the next access according to the access restriction rule corresponding to the access restriction indication.
  • the receiving unit 310 may correspond to a receiving antenna of the UE, and may be configured to receive the indication information.
  • the receiving unit 310 may receive a broadcast message, a multicast message, or a unicast message, and extract the indication information from a broadcast message or a multicast message or a unicast message.
  • the access unit 320 may correspond to a processor and a transmitting antenna connected to the processor, and may be configured to send an access request according to an access restriction rule or not to send an access request.
  • the processor determines that the current UE has an access requirement, it first queries the currently-used access restriction rule, and determines the matching of the currently accepted access restriction rule by determining the parameter acquisition. Initiating access, and initiating access when the matching is unsuccessful.
  • the judgment parameters herein may include information about the access capability of the UE, the service type of the access requirement, or the access mode used by the UE, and finally determine whether to initiate the access by matching with the currently-established access restriction rule.
  • the access restriction indication and the indicated access restriction rule in this embodiment can be referred to the foregoing embodiment, and are not repeated here.
  • the dedicated RRC signaling may be the foregoing RRC connection release signaling, RRC connection reject signaling, or RRC connection reestablishment reject signaling.
  • This example uses an LTE access network as an example, and its radio access network element is an eNB.
  • the access restriction method provided in this example includes:
  • Step 101 The eNB determines whether its own load level is high or overloaded. If yes, the eNB initiates access restriction on the UE.
  • Step 102 For a UE that newly initiates an access request or a connection reestablishment request, the eNB may restrict the access behavior of the UE by using an RRC connection reject procedure or an RRC reestablishment rejection procedure, and perform RRC connection reject signaling or RRC connection reestablishment reject signaling.
  • the eNB may release the RRC connection of the UE by using the RRC connection release signaling to reduce the load of the eNB, and in the RRC
  • the connection release signaling carries one or more of an access restriction rule and an access restriction parameter; or one of an access restriction rule and an access restriction parameter carried in the reject signaling or the connection release signaling Multiple, thereby limiting the subsequent access behavior of the rejected or released UE.
  • the step 102 includes:
  • the eNB may restrict the access behavior of the UE by using an RRC connection rejection procedure or an RRC reestablishment rejection procedure,
  • the RRC connection reject signaling or the RRC connection re-establishment rejection signaling carries the connection restriction rule and the access restriction indication of the restriction parameter.
  • Step 103 Before the UE (user equipment) is ready to initiate the next access, determine whether the access behavior can be initiated according to the received access restriction rule and/or the access restriction parameter.
  • This example is used to describe the access restriction procedure initiated by the radio access network according to the indication of the core network element
  • the radio access network element is an eNB, and its core network element is an MME (Mobility Management Entity).
  • MME Mobility Management Entity
  • the access restriction method provided in this example includes:
  • Step 201 The MME determines whether the load level of the MME is high or overloaded. If yes, the MME sends an overload control message to the eNB through an interface with the eNB.
  • the information may be sent through an Overload start message or may be sent through other S1 interface signaling.
  • the overload control information includes an access restriction rule and/or an access restriction parameter;
  • Step 202 The eNB performs access control on the UE in the cell according to the received overload control information sent by the MME. For the UE that newly initiates the access request or the connection reestablishment request, the eNB may perform an RRC connection rejection process or an RRC reestablishment.
  • This example is used to illustrate which access restriction methods and effects can be formed by a combination of different access restriction indications.
  • the access restriction rules and/or the access restriction parameters included in the RRC connection reject signaling or the RRC connection release signaling may include which manners, and what access control is provided. effect;
  • the access restriction rule and/or the access restriction parameter included in the RRC connection reject signaling, the RRC connection re-establishment rejection signaling, or the RRC connection release signaling of the eNB include the following categories:
  • the device is prohibited from initiating a call of mo-data, or mo-ExceptionData, or delayTolerantAccess, or mo-signaling, for the UE supporting only the CP mode;
  • the UE that prohibits the device capability to "support both the CP mode and the UP mode" uses the CP mode to initiate a call of mo-data, or mo-ExceptionData, or delayTolerantAccess, or mo-signaling;
  • the threshold may be Notifying the UE by the network side or pre-setting by both the transmitting and receiving parties;
  • Example 1 Selecting rule (1), and selecting the restricted service type as delayTolerantAccess, the eNB includes the following indications in the RRC connection reject signaling, the RRC connection reestablishment rejection signaling, or the RRC connection release signaling:
  • Example 2 The rule (1) is still selected, and the selected restricted service type is mo-data and delayTolerantAccess, and the eNB includes the following indications in the RRC connection reject signaling, the RRC connection re-establishment rejection signaling, or the RRC connection release signaling:
  • the UE that receives the above-mentioned indication, when it initiates the service of the delayTolerantAccess or the service of the mo-data, can initiate the access only by using methods other than the UP mode and the legacy mode according to the indicated access restriction rule;
  • Example 3 Rule (1) is still selected, the selected restricted service types are mo-ExceptionData and mo-signaling, and mo-data and delayTolerantAccess, then the eNB is in RRC Connection Rejection Signaling, RRC Connection Reestablishment Rejection Signaling, or RRC Connection.
  • the release signaling includes the following indications:
  • the UE that receives the above indication can initiate the access only by using methods other than the UP mode and the legacy mode when the four types of services that are restricted by the rule are initiated.
  • Example 4 For the usage of Rule 2, refer to Rule 1, see Example 1, 2, 3;
  • Example 5 Selecting rule (3), the selected restricted service type is mo-data, and the eNB includes the following indications in the RRC connection reject signaling, the RRC connection reestablishment reject signaling, or the RRC connection release signaling:
  • the UE (user equipment) of a certain proportion X is prohibited from initiating a call of the mo-data by using the CP mode;
  • the ratio X may be configured by the eNB, and the UE is notified by using a broadcast message or dedicated signaling, for example, when the load is heavy, the ratio may be X is set higher, for example 80%.
  • the UE receives the above-mentioned indication, when it initiates the mo-data service restricted by the rule, if the method other than the CP method is used, the access may be directly initiated. If the CP mode is adopted, the random number is uniformly calculated. The probability of initiating access, when the ratio X is 80%, only 20% of the probability can use the CP method to initiate access;
  • the device is prohibited from initiating a call of mo-data, or mo-ExceptionData, or delayTolerantAccess, or mo-signaling for a UE that supports only CP mode.
  • the rule limits the types of capabilities that the UE has and the type of services it initiates.
  • the service restrictions can be selected in a variety of free combinations, for example:
  • the device is prohibited from initiating a call for mo-data for the UE that supports only the CP mode.
  • the device is not allowed to initiate a call to the delayTolerantAccess for the UE that supports only the CP mode.
  • the device is prohibited from initiating a call of mo-ExceptionData or mo-signaling for a UE that supports only CP mode.
  • the device is prohibited from initiating a mo-signaling call for the UE that supports only the CP mode.
  • the device with the device capability of "supporting both the CP mode and the UP mode" is prohibited from initiating a call of mo-data, or mo-ExceptionData, or delayTolerantAccess, or mo-signaling.
  • the rule sets an access restriction for another UE capability; the usage can refer to Example 6;
  • a device with the device capability of "supporting both the CP mode and the UP mode" is prohibited from using the CP mode to initiate a call of mo-data, or mo-ExceptionData, or delayTolerantAccess, or mo-signaling.
  • the rule includes three restrictions on the UE capability, the access mode used, and the type of service initiated. For the usage, refer to the previous example.
  • the device with the device capability of "supporting both the CP mode and the UP mode” is used to initiate the call of mo-data, or mo-ExceptionData, or delayTolerantAccess, or mo-signaling using the UP mode or the legacy mode; the rule (7) is similar to the rule 6. Only the restrictions on the access method used are different.
  • a UE that receives the rule only needs to initiate a non-IP-data service, and no matter what its capabilities are, no matter what access mode it adopts, it cannot initiate access;
  • the access restriction condition of the rule for the non-IP-data service is more relaxed than the rule (8), and the access restriction is performed on a part of the non-IP-data service from the perspective of the service data feature.
  • the limitation angle of the service data feature includes one or more of the following combinations:
  • Example 12 Selection rule (10) or (11) can refer to rule (8) or (9);
  • the threshold can be notified by the network side.
  • the UE is preset by the transmitting and receiving parties;
  • the rule also combines the restriction conditions of the service data feature with the restriction conditions of the access mode, except that the restriction condition of the access mode is for the UP mode, and thus the constraint conditions and rules (13) of the corresponding service data feature are Differently, this example emphasizes that the UP mode cannot be used to transmit small data packets or low traffic services.
  • one of the rules may be selected, or multiple of them may be selected. When multiple rules are selected, it is ensured that there is no conflict between the rules and no duplicates.
  • the access restriction rule and/or the access restriction parameter included in the overload control information sent by the MME to the eNB may include which manners, and what kind of access control effect is provided;
  • the MME may send the overload control information to the eNB through the S1 interface message, and any message of the S1 interface may be used.
  • the typical overload message is an Overload start message.
  • the access restriction rule and/or the access restriction parameter included in the overload control information sent by the MME may refer to the 13 rules described in the example 3, and the usage method is the same as that of the example 3.
  • the eNB may decide whether to adjust the overload control information sent by the MME according to its own situation and then send the information to the UE.
  • This example is used to illustrate a more flexible access restriction method that can be formed by combining additional access restriction parameters.
  • the eNB or the MME may additionally send other access restriction parameters to cooperate with the access restriction rule to form a new and more flexible access restriction rule.
  • the additional access restriction parameters include:
  • the time parameter includes: a parameter of a wait timer to specify a duration for the access restriction rule to take effect;
  • the ratio parameter includes: a probability factor or a scale factor, to specify a probability that the access restriction rule is effective or a proportion of the UE;
  • the data model threshold includes: a packet size threshold, or a cumulative data volume threshold, or a traffic threshold, or a threshold number of consecutive data packets, or a frequency/cycle threshold of consecutive data packets to specify the access restriction rule
  • the included service is prohibited from exceeding the data model threshold or prohibited from being lower than the data model threshold;
  • the above three parameters may be selected by one parameter or a combination of multiple parameters, and combined with the aforementioned access restriction rule to form a new rule.
  • the specific values of the above three parameters may be configured by the eNB and notified to the UE by broadcast messages or dedicated signaling.
  • Example 1 Combining rule (2) "Prohibiting the use of CP mode to initiate mo-ExceptionData, or delayTolerantAccess, or mo-signaling call" with the time parameter, can form a new rule as follows:
  • the time range A may be configured by the eNB and notified to the UE by a broadcast message or dedicated signaling.
  • Example 2 Combining rule (2) "Prohibiting the use of CP mode to initiate mo-ExceptionData, or delayTolerantAccess, or mo-signaling call" with the proportional parameter, can form a new rule as follows:
  • the preset ratio B may be configured by the eNB and notified to the UE by using a broadcast message or dedicated signaling. In this way, the eNB can prohibit the number of users in the proportion B from using the CP mode to initiate a call of the restricted service type.
  • Example 3 Combining rule (2) "prohibiting the use of CP mode to initiate mo-ExceptionData, or delayTolerantAccess, or mo-signaling call" with the data model threshold, wherein the data model threshold in turn includes a packet size threshold, or accumulated data
  • the threshold, or the traffic threshold, or the threshold of the number of consecutive packets, or the frequency/period threshold of consecutive packets, may be selected one or more.
  • New rules can be formed as follows:
  • Example 4 The rule “prohibit sending non-IP-data services” is combined with time parameters, proportional parameters, and data model thresholds to form new rules as follows:
  • the number of users of the preset ratio B is prohibited from transmitting non-IP-data services exceeding the traffic threshold.
  • the core network element of the embodiment of the present invention also includes a Cellular internet of thing-Serving Gateway Node (C-SGN), and a Narrow Band Internet of Things (NB-based). IoT) MME and other core network elements supporting machine type communication and mobility management.
  • C-SGN Cellular internet of thing-Serving Gateway Node
  • NB-based Narrow Band Internet of Things
  • An embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, where the computer executable instructions are used to perform an access control method provided by one or more of the foregoing technical solutions, for example, The method shown in Fig. 1, Fig. 2, Fig. 3, Fig. 5 and Fig. 6.
  • the computer storage medium may include: a removable storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes; Optional for non-transitory storage media.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • the UE when the load status or the congestion status of the access network or the core network reflects that the network is busy, the UE is sent to the UE to prevent the UE from continuously initiating the access, causing the congestion to be further serious or the load rate to be further increased.
  • Dedicated RRC signaling with an access restriction indication thereby instructing the UE to validate the corresponding access indication rule according to the access restriction indication, thereby implementing a state from allowing all UEs to initiate an access handover to allowing only a part of UEs or partial UEs to initiate access.
  • the access of part of the UE or part of the service is restricted, thereby achieving the purpose of alleviating congestion or reducing the load rate, thereby ensuring that the currently urgently transmitted service or the emergency access UE can normally transmit data, and has a positive industrial effect, and At the same time, the transmission of the indication information and the operation of the UE according to the access restriction rule can be easily realized, and the achievability is strong.

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

Abstract

Selon certains modes de réalisation, l'invention concerne un procédé de commande d'accès, un élément de réseau de réseau d'accès, un élément de réseau de réseau central et un équipement utilisateur. Le procédé de commande d'accès comprend les étapes suivantes : lorsqu'une charge de réseau d'un réseau central ou d'un réseau d'accès satisfait un critère de surcharge, ou un état de congestion du réseau central ou du réseau d'accès satisfait un critère de congestion, un élément de réseau de réseau d'accès utilise une signalisation de commande de ressources radio (RRC) pour transmettre à un équipement utilisateur (UE) une indication de restriction d'accès. Les modes de réalisation de l'invention concernent également un support de stockage informatique.
PCT/CN2017/116875 2017-01-23 2017-12-18 Procédé de commande d'accès, élément de réseau, équipement utilisateur et support de stockage informatique WO2018133604A1 (fr)

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