WO2014059820A1 - Procédé et dispositif de contrôle d'accès pour terminal du type machine - Google Patents

Procédé et dispositif de contrôle d'accès pour terminal du type machine Download PDF

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Publication number
WO2014059820A1
WO2014059820A1 PCT/CN2013/081560 CN2013081560W WO2014059820A1 WO 2014059820 A1 WO2014059820 A1 WO 2014059820A1 CN 2013081560 W CN2013081560 W CN 2013081560W WO 2014059820 A1 WO2014059820 A1 WO 2014059820A1
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WIPO (PCT)
Prior art keywords
access
eab
asc
random access
terminal
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PCT/CN2013/081560
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English (en)
Chinese (zh)
Inventor
张家宝
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中兴通讯股份有限公司
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Publication of WO2014059820A1 publication Critical patent/WO2014059820A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to an access control method and related apparatus for a machine type terminal.
  • a user equipment UE
  • UE user equipment
  • the user equipment can be divided into 16 access classes (ACs), where AC 0 to 9 belong to the common level and are randomly assigned to the terminal; AC 10 indicates Emergency calls are not assigned to the terminal; AC 11 is used for network operations; AC 12 is for security services; AC 13 is for public service categories such as water and gas suppliers; AC 14 is for emergency services; AC 15 is for operator staff.
  • ACs access classes
  • AC 10 indicates Emergency calls are not assigned to the terminal
  • AC 11 is used for network operations
  • AC 12 is for security services
  • AC 13 is for public service categories such as water and gas suppliers
  • AC 14 is for emergency services
  • AC 15 is for operator staff.
  • a terminal can be configured as one of the AC 0-9s and one or more of the ACs 11-15.
  • the configuration information is stored in the Universal Subscriber Identity Module (USIM).
  • the network side in UMTS broadcasts system messages, including Access Class Barred (ACB) parameters. For different access levels, the network side broadcasts the corresponding ACB, and the ACB is configured as an enumerated type (barreck not barred if The user equipment needs to initiate a service request, and the user equipment first needs to check whether the ACB parameter broadcasted by the accessed cell barbars the access level to which the user belongs. If not, the user equipment cannot initiate a service request; if not, the user equipment can Initiating business requests.
  • ACB Access Class Barred
  • EAB Extended Access Barring
  • the system message broadcasts the enumerated cells (barred, not barred) to set the parameters of the EAB.
  • the 10-bit cell can be broadcasted separately for the UEs applicable to the EAB according to different access levels, and is applicable to
  • the UE of the EAB needs to determine whether it can access the network according to its own access level. If the UE determines that it can access the network according to the EAB parameter, The UE also needs to implement the decision of the access control according to the ACB parameters. If the UE determines to allow access to the network according to the ACB parameter, the UE will initiate random access. According to existing protocols, the UE will use shared random access resources with common machine type communication devices.
  • Figure 1 shows a schematic diagram of a random access procedure in an existing protocol.
  • the UE first determines whether the Preamble has reached the maximum number of transmissions. If not, the UE needs to generate a random number R between 0 and 1, and the R needs to have a persistent value (persistence). If the R is less than or equal to ⁇ , the UE can immediately trigger the physical layer to initiate random access (that is, send a Preamble); if R is greater than P, the UE needs to wait for a period of time to generate a random number R again, and determine whether it can be triggered again. The physical layer initiates random access.
  • An object of the present invention is to provide an access control method and apparatus for a machine type terminal, which can better solve the problem of low success rate of a random access network of an ordinary user.
  • an access control method for a machine type terminal including: an extended access control EAB terminal uses a random access resource mapping table to determine an access service corresponding to a public land mobile network PLMN to which an EAB terminal belongs Level ASC; generating an access random number, and comparing the access random number with an access duration value corresponding to the ASC; and, according to the comparison result, initiating a random access request to the network side, so that the network side uses the ASC Corresponding random access resources establish a radio access bearer.
  • the method further includes: the EAB terminal receiving the system message of the camping cell, and determining whether it can initiate the random access request according to the EAB parameter and the ACB parameter therein.
  • the access layer of the EAB terminal acquires the PLMN identity of the PLMN from its non-access stratum, and searches for the ASC corresponding to the PLMN in the random access resource mapping table according to the PLMN identity, and determines the ASC. Random access resources used.
  • the EAB terminal uses the continuation value determined by the continuation level and the continuous scale factor in the system message as the access continuation value corresponding to the ASC.
  • the EAB terminal calculates the ratio of the available access level AC to the total AC according to the EAB parameter in the system message, and multiplies the continuous value determined by the continuous level and the continuous scale factor in the system message by the ratio. Obtaining an access persistence value corresponding to the ASC.
  • the EAB terminal when the access random number is less than or equal to the access duration value, the EAB terminal sends a random access request including a random access signature to the network side, so as to establish an EAB terminal and a network side radio access bearer. .
  • the EAB terminal when the access random number is greater than the access duration value, the EAB terminal generates an access random number again after the predetermined waiting time, and associates the generated access random number with the ASC. The persistent values are compared, and according to the comparison result, the random access request including the random access signature is sent to the network side.
  • the method further includes: a random access determining module, configured to receive a system message broadcast by the resident cell, and determine, according to the EAB parameter and the ACB parameter therein, whether the random access network can be initiated.
  • the method further includes: an access duration value determining module, configured to use a duration value determined by the duration level and the continuous scale factor in the system message as an access duration value corresponding to the ASC, or according to an EAB in the system message The parameter calculates a ratio of the available access level AC to the total AC, and multiplies the continuous value determined by the continuous level and the continuous scale factor in the system message by the ratio to obtain an access duration value corresponding to the ASC. .
  • FIG. 1 is a schematic flowchart of a random access procedure in a prior art protocol provided by the prior art
  • FIG. 2 is a flowchart of an access control method of a machine type terminal according to an embodiment of the present invention
  • FIG. 4 is a random access resource mapping table according to an embodiment of the present invention
  • FIG. 5 is a block diagram of an access control device of a machine type terminal according to an embodiment of the present invention.
  • the EAB terminal (the UE applicable to the EAB) obtains the corresponding random access resource according to the mapping manner of the newly introduced random access resource, specifically, the access layer of the UE is from the non-access stratum thereof.
  • the non-access stratum of the UE learns a selected PLMN identity, and determines a random access resource corresponding to the ASC according to the PLMN identity.
  • the newly introduced random access resource mapping manner may map the UEs of the different PLMNs applicable to the EAB to different random access resources, and may also map the UEs of the different PLMNs applicable to the EAB to the same random access resources. Or the UE applicable to the EAB obtains the corresponding access duration value P according to the proportion of not Barred in the EAB parameter when initiating random access, and the new P is equal to the product of the ratio of not Barred and the original product.
  • FIG. 2 is a flowchart of a method for access control of a machine type terminal according to an embodiment of the present invention. As shown in FIG. 2, the method includes: Step 201: The extended access control EAB terminal uses a random access resource mapping table to determine a publicity of the EAB terminal.
  • the access service level ASC corresponding to the land mobile network PLMN.
  • the EAB terminal receives the system message of its camped cell, and determines whether it can initiate a random access request according to the EAB parameter and the ACB parameter therein.
  • the access layer of the EAB terminal acquires the PLMN identity of the PLMN from its non-access stratum, and searches for the ASN corresponding to the PLMN in the random access resource mapping table according to the PLMN identity. And determine the random access resources used by ASC.
  • Step 202 Generate an access random number, and compare the access random number with an access persistent value corresponding to the ASC.
  • step 202 the EAB terminal uses the continuation level determined by the continuation level and the continuous scale factor in the system message as the access continuation value corresponding to the ASC. Or, according to the EAB parameter in the system message, calculate the ratio of the available access level AC to the total AC, and multiply the continuous value determined by the continuous level and the continuous scale factor in the system message by the ratio, and obtain the access continuity corresponding to the ASC. value.
  • Step 203 Initiate a random access request to the network side according to the comparison result, so that the network side establishes a radio access bearer by using the random access resource corresponding to the ASC.
  • the EAB terminal when the access random number is less than or equal to the access duration value, the EAB terminal sends a random access request including a random access signature to the network side, so as to establish an EAB terminal and a radio access bearer on the network side.
  • the EAB terminal When the access random number is greater than the access duration value, the EAB terminal generates the access random number again after the predetermined waiting time, and compares the generated access random number with the access persistent value corresponding to the ASC, according to the comparison result. Send a random access request containing a random access signature to the network side.
  • Example 1
  • UE1 In UMTS, UE1 resides in cell 1 of the Radio Network Controller (RNC) and is in an idle state.
  • the cell 1 belongs to a cell of the shared network, and the system message includes identifiers of multiple networks, including PLMN1, PLMN2, and B PLMN3.
  • the network selected by UE1 is PLMN1.
  • a valid EAB is configured on the USIM card of UE1, and the EAB configuration is set to True.
  • the USIM card of UE1 indicates that the access level of the UE is 2, that is, the Access Class is 2.
  • UE1 When UE1 needs to initiate a service request, UE1 needs to determine whether it can access the originating service request according to the EAB parameter and the ACB parameter broadcasted by the cell 1. At this time, the EAB parameter broadcasted in the cell 1 is an enumerated type, and is set to not barred for AC 2, and the ACB parameter broadcasted in the cell 1 is also an enumerated type, and the bar setting for the AC 2 is also not barred. The UE1 checks the EAB parameter and the ACB. After the parameter, it is learned that the network can be accessed, and UE1 enters the process of initiating a random access.
  • the system message indicates that the mapping relationship between different ACs and ASCs can be as shown in FIG. 3. Among them, AC 0 ⁇ 9 are mapped to the same ASC, and AC10 ⁇ AC15 can be mapped to different ASCs. System message indicating a mapping relationship between the AC ASC referring to FIG. 3 ⁇ ⁇ IE value of the number, which ranges from 0 to 7 can be mapped to different AC ASC same, may be mapped to different ASC. Different ASCs correspond to different random access resources (also set in the system message).
  • ASC0 represents the highest priority, generally used for emergency services
  • ASC7 has the lowest priority.
  • EAB terminals usually belong to machine-type communication devices, such as smart meters, water meters, etc., and the services carried out do not require high real-time performance, the priority is not high, or the business priorities are high. If the traffic of the common user equipment is the same as that of the common user equipment, the random access conflict of the common user equipment is intensified and the service experience is degraded. EAB is therefore suitable for the UE, the introduction of special new ASC (8 th IE, 9 th IE, 10 th IE) corresponding thereto, as shown in FIG.
  • the EAB terminals (AC 0 to 9) belonging to PLMN1 can be mapped to new ASCs such as ASC 8, and can also be mapped to the same ASC as ordinary terminals, for example, system message settings 1 st IE and 8 th IE The same is 3 (the same ASC can be used when the load is light, to ensure the success rate of random access of ordinary users).
  • the system message configuration AC 10 15 of the cell 1 is mapped to the ASC 0, and the AC 0 -9 is mapped to the ASC 1, and the UE belonging to the PLMN 1 is mapped to the ASC 2, which is applicable to the EAB and belongs to the PLMN 2 .
  • UE1 generates an access random number R that is uniformly distributed between 0 and 1. If the access random number is less than or equal to P, the MAC layer of UE1 may send a random access signature, otherwise it needs to wait for a period of time (such as 10 milliseconds). ), and then generate a new access random number R that is uniformly distributed between 0 and 1, and again determine whether a random access signature can be sent. If the network side receives the random access signature sent by UE1, it will send a confirmation to it. Instructing, then UE1 will send an RRC connection request signaling to the RNC, and the RNC will establish an RRC connection for UE1, and then establish a radio access bearer for data transmission.
  • RRC connection request signaling to the RNC
  • RNC will establish an RRC connection for UE1, and then establish a radio access bearer for data transmission.
  • the network side can allocate different random access resources according to this, thereby ensuring common The UE random access success rate is not reduced due to the large number of UEs applicable to EAB, ensuring the access experience of ordinary users.
  • the EAB terminals that belong to different PLMNs are mapped to different ASCs, and the system messages can dynamically configure the user equipments to be mapped to the same ASC (such as ASC2). Accessing the resources enables the UEs that are applicable to the EAB to access the network using independent random access resources to avoid random access that affects ordinary users.
  • UE2 In UMTS, UE2 resides in the cell 2 under the RNC and is in an idle state. A valid EAB is configured in the USIM card of UE2. In addition, the USIM card of UE2 indicates that the access level of the UE is 3, that is, AC is 3.
  • the EAB parameter broadcasted in cell 2 is a 10-bit access control parameter, 1101110011 (1 indicates barred, 0 indicates not barred, and the first 1 is an extended access control parameter corresponding to AC 0).
  • UE2 finds that the extended access control parameter corresponding to AC 3 is 0, so UE2 passes.
  • the decision of the EAB parameter needs to implement the access decision according to the ACB parameter.
  • UE2 finds that the result of the decision according to the ACB parameter is also not barred, so UE2 can initiate random access.
  • the UEs that are applicable to the EAB have the same ASC mapping if their AC is between 0 and 9, and the UE is not applicable to the EAB and its AC is between 0 and 9.
  • UE2 is mapped to ASC 3, which is the same as the ASC mapped between UEs that are not applicable to EAB and whose AC is between 0 and 9.
  • the system access message of the cell 2 sets the random access resources corresponding to the ASC 3 including the available random access signature, the number of available subchannels, and the like.
  • EAB UE In order to avoid the application of EAB UE (UE2 as in this embodiment example) Effect common UE random access success rate, UE2 needs to generate a new suitable EAB new access of a UE determines whether the persistence value P 17 immediately initiates a random Access.
  • the new access persistence value needs to be determined according to the persistence level indicated in the system message (represented by N in the protocol) and the persistence scale factors (represented by the protocol), and the persistent value and the EAB parameter. product in a proportion not Barred ASC 3 corresponding to the access persistence value (persistence value) 0 That is, the new product is equal to the original corresponding to the three available AC proportion ASC.
  • the ratio of not barred in the EAB parameter is 30% (according to the EAB parameter 1101110011), and the new one is equal to the original corresponding to ASC 3! ⁇ with. . /.
  • UE2 needs to send a random access signature according to a new decision.
  • UE2 generates an access random number R that is uniformly distributed between 0 and 1. If R is less than or equal to the new P, the MAC layer of UE2 may send a random access signature ( Signature), otherwise it needs to wait for a period of time (such as 10 milliseconds or 20 milliseconds, the protocol can pre-agreed the value), and then generate a new access random number R that is uniformly distributed between 0 and 1 to determine whether it can be sent randomly. Access signature.
  • Signature random access signature
  • the network side receives the random access signature sent by the UE2, it will send an acknowledgment indication to it, and then the UE2 will send an RRC connection request signaling to the RNC, and the RNC will establish an RRC connection for the UE2, and then establish a wireless connection for data transmission.
  • the network side receives the random access signature sent by the UE2, it will send an acknowledgment indication to it, and then the UE2 will send an RRC connection request signaling to the RNC, and the RNC will establish an RRC connection for the UE2, and then establish a wireless connection for data transmission.
  • the bearer receives the random access signature sent by the UE2, it will send an acknowledgment indication to it, and then the UE2 will send an RRC connection request signaling to the RNC, and the RNC will establish an RRC connection for the UE2, and then establish a wireless connection for data transmission.
  • the probability of initiating a random access signature is lower than that of a normal UE to initiate a random access signature, and the load state of the network side is newly considered (the proportion of not barred in the EAB reflects the network from the side)
  • the load status if the network side is idle, the ratio of not barred approaches 100%. If the load on the network side is heavy, the ratio of not barred approaches 0%), so that even UEs suitable for EAB are mapped to the same UE as ordinary UEs.
  • ASC the probability of initiating a random access signature is different.
  • FIG. 5 is a block diagram of an access control apparatus for a machine type terminal according to an embodiment of the present invention. As shown in FIG.
  • the apparatus includes: An ASC determining module, configured to determine, by using a random access resource mapping table, an access service level ASC corresponding to a public land mobile network PLMN to which the extended access control EAB terminal belongs; an access control module configured to generate an access random number, and The access random number is compared with the persistent value corresponding to the ASC, and the random access request is initiated to the network side according to the comparison result, so that the network side establishes the radio access bearer by using the random access resource corresponding to the ASC; the random access determining module, setting Receiving a system message broadcasted by the camping cell, and determining whether it can initiate a random access network according to the EAB parameter and the ACB parameter therein; the access duration value determining module is set to set the persistence level and the continuous scale factor in the system message The determined persistent value is used as the access persistence value corresponding to the ASC, or according to the EAB parameter in the system message, the ratio of the available access level AC to the total AC is calculated, and the duration determined by the continuous level and the
  • the value is multiplied by the ratio to obtain the access persistence value corresponding to the ASC.
  • the working process of the device is as follows: After determining that the EAB terminal can initiate the random access network, the ASC determines that the module does not obtain the identifier of the PLMN selected by the EAB terminal, and uses the identifier to find the random access resource mapping.
  • the table obtains an access service level ASC corresponding to the PLMN to which the EAB terminal belongs, thereby determining a random access resource that can be used.
  • the access control module generates an access random number that is uniformly distributed between 0 and 1, and compares the access random number with the access persistent value calculated by the access persistent value determining module.
  • the access control module When the access random number is less than or equal to the access duration, the access control module sends a random access request including a random access signature to the network side to establish a radio access bearer for data transmission, otherwise, at a predetermined waiting time After that, the access control module generates an access random number again, and compares it with the access persistent value again, and randomly accesses the network according to the comparison result.
  • the access control method of the embodiment and the preferred embodiment of the present invention is applicable to an EAB terminal, and the EAB terminal initiates random access by using a random access resource corresponding to the ASC mapped by itself, or uses a new access duration value!

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

Abstract

L'invention porte sur un procédé et un dispositif de contrôle d'accès pour terminal du type machine, qui concerne le domaine des communications mobiles. Le procédé comprend les opérations suivantes : un terminal d'interdiction d'accès étendue (EAB) détermine une classe de service d'accès (ASC) correspondant à un réseau mobile terrestre public (PLMN) auquel le terminal EAB est subordonné à l'aide d'une table de mappage de ressource d'accès aléatoire ; génération d'un numéro d'accès aléatoire, et comparaison du numéro d'accès aléatoire à une valeur persistante correspondant à l'ASC ; et en fonction du résultat de comparaison, déclenchement d'une requête d'accès aléatoire à un côté réseau pour que le côté réseau établisse un support d'accès radio à l'aide d'une ressource d'accès aléatoire correspondant à l'ASC. Par limitation stricte d'un dispositif de communication du type machine à déclencher un accès aléatoire, la présente invention garantit qu'un utilisateur commun peut accéder sans discontinuité à un réseau.
PCT/CN2013/081560 2012-10-19 2013-08-15 Procédé et dispositif de contrôle d'accès pour terminal du type machine WO2014059820A1 (fr)

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CN108811038B (zh) * 2018-04-08 2021-01-22 北京邮电大学 一种大规模机器类型通信的非正交多址接入方法及设备
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