WO2012019524A1 - 一种网络连接方法和系统 - Google Patents

一种网络连接方法和系统 Download PDF

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Publication number
WO2012019524A1
WO2012019524A1 PCT/CN2011/078049 CN2011078049W WO2012019524A1 WO 2012019524 A1 WO2012019524 A1 WO 2012019524A1 CN 2011078049 W CN2011078049 W CN 2011078049W WO 2012019524 A1 WO2012019524 A1 WO 2012019524A1
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WIPO (PCT)
Prior art keywords
group
terminal
identifier
network
mapping relationship
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PCT/CN2011/078049
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English (en)
French (fr)
Inventor
于映辉
张淼
韩广林
李龠
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2012019524A1 publication Critical patent/WO2012019524A1/zh
Priority to IL224479A priority Critical patent/IL224479A/en
Priority to US13/762,691 priority patent/US9084263B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/186Processing of subscriber group data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/51Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/09Mapping addresses
    • H04L61/10Mapping addresses of different types
    • H04L61/103Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5069Address allocation for group communication, multicast communication or broadcast communication

Definitions

  • the present invention relates to the field of communications, and in particular, to a network connection method and system.
  • GSM Global System for Mobile Communications
  • a terminal when a terminal initiates an uplink service, a random access procedure is first performed. At this time, multiple terminals may simultaneously initiate random access. If the access and the access code are selected, the access collision is caused, and the access fails. The access failure causes the access delay to increase and the access success rate to decrease. In the current mobile communication system, the access resources with more configurations are generally used, so that the probability of collision is low, and the delay and success rate of the access are ensured.
  • M2M machine-to-machine
  • IOT Internet of Things
  • M2M/IOT has a wide range of applications, such as intelligent transportation, telemedicine, surveillance, smart grid, environmental detection, smart home and many other scenarios.
  • M2M and the Internet of Things have become the hotspots of operators, and various applications based on M2M and the Internet of Things have rapidly developed.
  • H2H human-to-human
  • Machine Type Communication refers to network communication (ie, M2M application) between one or more network elements without human intervention, such as traffic control and management. Factory monitoring, remote meter reading and other applications.
  • M2M application a plurality of M2MEs (Machine To Machine Equipments) having the same M2M application form a whole, referred to as a group.
  • the machine type communication device identification shall be able to uniquely identify an M2M terminal and may use the International Mobile Subscriber Identity (IMSI, International Mobile Subscriber Identity, Mobile Station International ISDN Number (MSISDN, Mobile Station International ISDN Number) (IP addr IP Multimedia Public Identity ( IMPU, IP Multimedia Public Identity), IP Multimedia Private Identity (IMI, IP Multimedia Private Identity), etc.
  • IMSI International Mobile Subscriber Identity
  • MSISDN Mobile Station International ISDN Number
  • IMPU IP Multimedia Public Identity
  • IMI IP Multimedia Private Identity
  • the corresponding time-frequency resources are allocated only when the user needs to communicate.
  • the first thing to do is the random access procedure, then further radio resource control (RC) connection establishment and data transmission, and finally release the occupied resources when the communication is completed.
  • RC radio resource control
  • the random access resource includes two parts, one is the time slot and frequency for initiating random access, and the other is the preamble sequence (P rea mble ) used.
  • P rea mble preamble sequence
  • the non-contention-based random access method means that the base station (eNB) notifies the user equipment (UE, User Equipment) to use its unique access resource, and the eNB needs to allocate access resources, so the system overhead is large. It is only used in scenarios where high latency is required, such as when switching and dropping calls.
  • eNB base station
  • UE User Equipment
  • the eNB Based on the contention-based random access method, the eNB indicates in the broadcast message the access resource information that the local cell is allowed to initiate random access, and then the UE randomly selects an allowed Preamble, and randomly selects the next random access time. The frequency resource is randomly accessed, and then random access is initiated at the selected random access time-frequency location. Since each UE randomly selects random access resources randomly, when multiple UEs select the same random access resource, a conflict occurs. According to the conflict resolution solution in the existing protocol, at most one of the multiple UEs that generate the conflict is only one. After successful access, other UEs need to retreat for a period of time to initiate an access attempt again, and then retreat when a collision occurs again, until the successful access or the maximum access attempt is reached. Conflicts can extend the terminal's access time and impose an additional burden on the network and the terminal.
  • M2M terminal also referred to as MTC terminal
  • MTC terminal the functions implemented by the M2M terminal
  • a typical intelligent transportation system includes GPS (Global Positioning System, Globe). Positioning System ) /GLONASS (National Navigation Satellite System) satellite positioning system, mobile vehicle terminal, wireless network and Intelligent Transportation Systems (ITS) control center.
  • GPS Global Positioning System, Globe
  • Positioning System /GLONASS (National Navigation Satellite System) satellite positioning system
  • mobile vehicle terminal wireless network
  • ITS Intelligent Transportation Systems
  • the GPS module receives the ranging information of the navigation satellite network, and transmits information such as the longitude, latitude, speed, and time of the vehicle to the microcontroller; collects vehicle state information through the video image device; and the microcontroller performs the GPRS module and the ITS control center. Two-way information interaction, complete vehicle monitoring and other functions.
  • a smart grid requires data reporting for all smart grid terminal cycles. For example, electronic meter reading services, all smart grid terminals upload data to a particular server at a specific time. For example, smart grids in many countries require a large number of MTC terminals to frequently send upstream meter reading data in a 5-minute cycle, and the data of meter reading data is relatively small.
  • the terminal needs to establish a dedicated signaling connection and a dedicated data bearer for transmitting the uplink data, and the network allocates a dedicated Cell Radio Network Temporary Identity (C-RNTI) to each terminal. After each uplink data transmission is completed, the UE releases the Radio Resource Control (R C) connection to enter the IDLE state.
  • C-RNTI Cell Radio Network Temporary Identity
  • a large number of MTC terminals need to periodically report data packets with small data volume.
  • a large number of MTC terminals establish signaling connections and data radio bearers are generated.
  • a large amount of signaling overhead consumes a lot of network resources.
  • the MTC terminal can always maintain the connection state in the prior art, but if the MTC terminal remains in the connected state, it will occupy a large amount of configuration resources of the network.
  • the MTC terminal can always maintain the connection state in the prior art, but if the MTC terminal remains in the connected state, it will occupy a large amount of configuration resources of the network.
  • Embodiments of the present invention provide a network connection method and system, which can reduce the signaling overhead of establishing a signaling connection and a data bearer.
  • An aspect of the present invention discloses a method for network connection, a network groups a plurality of terminals, allocates a group identifier, and establishes a mapping relationship between a group identifier and a terminal identifier; the network establishes a group-based signaling radio bearer for each group and is based on Group data radio bearer; when the terminal in each group accesses the network, the network according to the mapping relationship between the group identifier and the terminal identifier, The terminal is assigned a group-based signaling radio bearer and a group-based data radio bearer corresponding to the group to which the group belongs, so that the terminal initiates network access by using the group-based signaling radio bearer and the group-based data radio bearer.
  • Another aspect of the present invention discloses a method for network connection, where a terminal receives a group-based signaling radio bearer and a group-based data radio corresponding to a group to which the terminal belongs according to a mapping relationship between a group identifier and a terminal identifier. Carrying; the terminal initiates network access by using the group-based signaling radio bearer and the group-based data radio bearer.
  • a communication network element including: a grouping unit, configured to group a plurality of terminals, and assign a group identifier; a mapping establishing unit, configured to establish a mapping relationship between the group identifier and the terminal identifier; And configured to establish a group-based signaling radio bearer and a group-based data radio bearer for each group; and an allocation unit, configured to allocate a terminal to the terminal according to a mapping relationship between the group identifier and the terminal identifier when the terminal accesses the network in the group Group-based signaling radio bearers and group-based data radio bearers corresponding to the group.
  • a terminal including: a receiving unit, configured to receive, according to a mapping relationship between a group identifier and a terminal identifier, a group-based signaling radio bearer and a group based on a group to which the terminal belongs according to a mapping relationship between the group identifier and the terminal identifier.
  • Data radio bearer an access unit, configured to initiate network access by using the group-based signaling radio bearer and the group-based data radio bearer.
  • the signaling overhead of establishing the signaling connection and the data bearer can be reduced.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a UMTS system according to another embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a network structure of an evolved access network of an LTE network
  • FIG. 4 is a schematic flowchart diagram of a network connection method according to another embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of a network connection method according to another embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of a network connection method according to another embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a network architecture of an evolved system according to another embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a network connection method according to another embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of a method for network connection according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a communication network element 100 according to another embodiment of the present invention.
  • FIG. 11 is another schematic structural diagram of a communication network element 100 according to another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a terminal 120 according to another embodiment of the present invention.
  • FIG. 13 is another schematic structural diagram of a terminal 120 according to another embodiment of the present invention.
  • the technical solution of the present invention can be applied to various communication systems, such as: GSM, Code Division Multiple Access (CDMA), Code Division Multiple Access (CDMA), TD-SCDMA, CDMA2000, WIMAX, Wideband Code Division Multiple Access (WCDMA, Wideband Code) Division Multiple Access Wireless), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • TD-SCDMA Code Division Multiple Access 2000
  • WIMAX Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the terminal includes a mobile terminal (Mobile Terminal) or a fixed terminal or an MTC terminal.
  • the MTC terminal refers to a terminal that uses M2M communication, and can be used in various scenarios such as intelligent transportation, telemedicine, monitoring, smart grid, environment detection, and smart home.
  • FIG. 1 it is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the communication system mainly includes an access network 13 , a core network 15 , and a server 17 .
  • the access network 13 and the core network 15 are connected by wired or wireless communication, for example, by optical fiber.
  • the server 17 may be one or more, and the server 17 and the core network 15 are connected by wired or wireless communication, such as by fiber optic connections.
  • the access network 13 can connect one or more terminals 11 by wired or wireless communication.
  • the server 17 may be an MTC server (MTC Server) or other type of server.
  • the terminal 11 may be any terminal that can be used for communication, such as a mobile phone, a fixed telephone, a computer, an MTC terminal, etc., and the present invention is not limited thereto.
  • the access network 13, the core network 15, may be an access network and a core network of any standard communication network such as WCDMA, GSN, CDMA or LTE, and the present invention is not limited thereto.
  • the different types of communication systems refer to communication systems that use different access technologies.
  • the network structure can be as shown in FIG. 2 , which is a schematic structural diagram of a UMTS according to another embodiment of the present invention.
  • the Universal Mobile Telecommunication System (UMTS) is a third generation mobile communication system using WCDMA air interface technology.
  • the UMTS system is also referred to as a WCDMA communication system, using a structure similar to that of the second generation mobile communication system.
  • UMTS system includes Universal Terrestrial Radio Access Network (UTRAN, Universal Terrestrial Radio Access)
  • the UTRAN is a terrestrial radio access network, which includes one or several Radio Network Subsystems (RNS).
  • RNS Radio Network Subsystems
  • RNC Radio Network Controller
  • NodeB The base station
  • the interface between the RNC and the CN is the Iu interface, and the NodeB and the RNC are connected through the Iub interface.
  • the Radio Network Controllers (RNCs) are interconnected via Iur, and Iur can be connected via a direct physical connection between R Cs or through a transport network.
  • R C is used to allocate and control the radio resources of the NodeB connected or associated with it.
  • the NodeB completes the conversion of the data stream between the Iub interface and the Uu interface, and also participates in some radio resource management.
  • the NodeB is the base station of the WCDMA system (ie, the wireless transceiver;), and is interconnected with the R C through the Iub interface to complete the processing of the physical layer protocol of the Uu interface.
  • the RN C is a radio network controller for controlling the radio resources of the UT RAN, and mainly performs functions such as connection establishment and disconnection, handover, macro diversity, and radio resource management control.
  • the network structure thereof may be an evolved access network (E-UTRAN) of the LTE network, as shown in FIG. 3 .
  • E-UTRAN evolved access network
  • FIG. 3 A schematic diagram of a network structure of an Evolved-Universal Terrestrial Radio Access Network, including a Mobility Management Entity (MME)/Serving SAE Gateway (Serving SAE GW) and an eNB.
  • MME Mobility Management Entity
  • Server SAE GW Serving SAE Gateway
  • eNB evolved access network
  • the Mobility Management Entity is connected to the eNB through an S1-MME interface, and the Serving SAE GW is connected to the eNB through an S1-U interface, and between the two eNBs. Connected via the X2 interface.
  • the access network mainly includes an evolved eNodeB (eNB) and an MME/SAE GW.
  • the MME/SAE GW is a border node. If it is regarded as part of the core network, the access network is mainly composed of an eNB-layer.
  • the eNB not only has the functions of the original NodeB, but also completes most of the functions of the original R C, including the physical layer, the MAC layer, the R C, the scheduling, the access control, the bearer control, and the access mobility management.
  • the eNB and the eNB are interconnected by a mesh (Mesh) method.
  • the working process of the communication system can be as follows.
  • the network is configured to group multiple terminals, and establish a group-based signaling radio bearer and a group-based data radio bearer for each group, and when each terminal in the group accesses the network, according to the group identifier and the terminal identifier
  • the mapping relationship is to allocate the group-based signaling radio bearer and the group-based data radio bearer corresponding to the group to which the terminal belongs.
  • terminals within each group access the network in a time division manner.
  • the entity for which the group-based signaling radio bearer and the group-based data radio bearer are allocated is completed by one or more communication network elements, for example, may be the same communication network element, or may be different respectively.
  • the communication network element, or a part of the functions, is implemented by one communication network element, and the other part of the function is implemented by another communication network element, which is not limited by the present invention.
  • the communication network element may be a device in the access network, or a device in the core network, or one device may be separately set.
  • the communication network element may be a NodeB or a Radio Network Controller (RC) of the access network in the WCDMA network.
  • the communication network element may be an eNodeB or an MME or an access in the LTE system.
  • gateway another example, the communication network element may be a GSM or CDMA system, a base station (BTS, base Transceiver Station) or base station controller (BSC, base Station controller) 0
  • FIG. 4 is a schematic flowchart diagram of a network connection method according to another embodiment of the present invention.
  • Group multiple terminals assign a group identifier, and establish a mapping relationship between the group identifier (group ID) and the terminal identifier (terminal ID).
  • the communication network element may be a device in the access network. It can also be a device in the core network, or it can be set up separately.
  • the communication network element may be a NodeB or a Radio Network Controller (RNC) of an access network in a WCDMA network.
  • RNC Radio Network Controller
  • the communication network element may be an eNodeB or an MME or an access in an LTE system.
  • the communication network element may be a base station (BTS, Base Transceiver Station) or a base station controller (BSC) in a GSM or CDMA system.
  • BTS Base Transceiver Station
  • BSC base station controller
  • the group identifier may be a group-CR TI, a group ID number, or the like, or may be a custom identifier.
  • the terminal identifier (UE ID) may be any symbol uniquely used to identify the terminal, such as IMSI, MSISDN, IP addr, IMPU, IMPI, or a custom identifier.
  • IMSI International Mobile Subscriber Identity
  • MSISDN MSISDN
  • IP addr IP addr
  • IMPU IP addr
  • IMPI IMPI
  • the communication network element when the network element is initially configured, the communication network element is configured with at least one group identifier, and all the terminals in the same cell are assigned the same group identifier, and the mapping relationship between the group identifier and the terminal identifier is established, for example, the communication network element is small according to the group identifier.
  • the large order assigns the group identity and establishes the mapping relationship between the group identity and the terminal identity, and vice versa.
  • the terminals in the same cell may be divided into multiple groups, for example, divided into different groups according to different service types, and different groups are assigned different group identifiers, for example, meter reading in the smart grid.
  • the terminals of the service belong to the same group, and the terminals that perform the monitoring service in the traffic system belong to another group.
  • a cell may be assigned one or more group identifiers.
  • all the terminals of the cell may be assigned different group identifiers according to different types of services that the terminal needs to report, for example, the smart grid terminal in the cell corresponds to the first.
  • the group identifier, the traffic system terminal in the cell corresponds to the second group identifier, and the like.
  • the communication network element may further determine, according to the identifier of the terminal, whether the mapping relationship between the group identifier and the terminal identifier corresponding to the terminal identifier is saved, if the corresponding information is not saved. Mapping information of the group identifier and the terminal identifier, determining the group to which the terminal belongs, assigning a group identifier to the terminal, and establishing a mapping relationship between the group identifier and the terminal identifier, if the mapping relationship between the group identifier and the terminal identifier is saved The mapping between the group identifier and the terminal identifier is not required, and the group identifier can be directly used in the subsequent process.
  • the network when it is determined that the mapping relationship between the group identifier and the terminal identifier corresponding to the terminal identifier is not saved according to the terminal identifier, and at the same time, it is determined that there is no group identifier that can be allocated, the network is further You can add a group ID and establish a mapping relationship between the new group ID and the terminal ID.
  • the communication network element may also assign a sequence number to the terminal of the same group, and establish a mapping relationship between the sequence number and the terminal identifier, so that each terminal in the same group initiates network access by sequence number in a time division manner.
  • the group identifier corresponds to a plurality of sequence numbers, and all terminals in the same cell correspond to one group identifier or terminals in the same cell that report the same service type correspond to the same group identifier.
  • the group identifier is configured by a server, and the communication network element, for example, the access network, for example, an eNodeB or an MME or an access gateway of an access network, receives group information sent by a server (for example, an MTC server),
  • the group information includes a group identifier
  • the group identifier is an identifier of the terminal group.
  • the communication network element determines the group to which the terminal belongs, and then assigns the sequence number corresponding to the group identifier, for example, according to the sequence number from small to large, and vice versa, and then establishes a mapping relationship between the group identifier and the terminal identifier, and further establishes The mapping relationship between the serial number and the terminal identifier.
  • the communication network element receives the type of the service reported by the terminal, searches for the corresponding group identifier, and then allocates the
  • the group identifier is further assigned to the terminal, and the sequence number may be further allocated, for example, according to the sequence number from small to large, and vice versa, and then the mapping relationship between the group identifier and the terminal identifier is established, and the mapping relationship between the sequence number and the terminal identifier may be further established.
  • the group identifier is reported by the terminal, and after receiving the group identifier reported by the terminal, the communication network element establishes a mapping relationship between the group identifier and the terminal identifier, and may also assign a sequence number corresponding to the group identifier, for example, according to the serial number from small to Large regular assignments, and vice versa, then establish a mapping relationship between serial numbers and terminal identification.
  • the core network identifies the group in which the terminal is located. For example, according to the type of the service reported by the terminal or the group in which the access resource identifies the terminal, the access network is notified to allocate the group identifier to the terminal, and the group identifier and the terminal are established.
  • the mapping relationship of the identity is established.
  • the communication network element receives a group identifier sent by the terminal; and queries whether the group identifier is stored.
  • the mapping relationship between the group identifier and the terminal identifier if there is no mapping relationship between the group identifier and the terminal identifier, the mapping relationship between the group identifier and the terminal identifier is established; if there is a mapping between the group identifier and the terminal identifier corresponding to the group identifier
  • the group ID assignment is no longer performed, and the group ID is directly used in the subsequent process.
  • the communication network element for example, the eNodeB or the MME or the access gateway of the access network, sends the group identifier to the terminal, where sending the group identifier to the terminal is optional or not.
  • the communication network element such as an eNodeB or an MME or an access gateway of the access network, passes the group identity through a system message, a RRC CONNECTION SETUP message, a physical channel reconfiguration message (PHYSICAL CHANNEL RECONFIGURATION wireless)
  • the bearer reconfiguration message (RADIO BEARER RECONFIGURATION) or the MAC header is carried and sent to the terminal.
  • the communication network element such as an eNodeB or an MME or an access gateway of the access network, sends a data reporting period (T) to the terminal and a time period (i) for each reported data; Or, the data reporting period (T) is sent to the terminal and the maximum number of users (N) reported in the reporting period; or, the maximum number of users (N) reported in the reporting period and the time period during which the data is reported are sent to the terminal (i) ).
  • the communication network element such as an eNodeB or an MME or an access gateway of the access network, also performs sequence number allocation.
  • the communication network element receives the sequence number request information sent by the terminal; and according to the terminal identifier carried by the sequence number request information and the group identifier of the terminal, the information about the mapping relationship between the sequence number and the terminal identifier corresponding to the terminal identifier is saved; The information about the sequence number and the terminal identifier mapping relationship corresponding to the terminal identifier, and the sequence information included in the mapping relationship between the sequence number and the terminal identifier mapping information or the searched sequence number and terminal identifier mapping relationship information The number is sent to the terminal; if there is no mapping relationship between the sequence number and the terminal identifier corresponding to the terminal, the sequence number is assigned, and the mapping relationship between the sequence number and the terminal identifier is established.
  • sequence number is added and assigned to the terminal, and the mapping relationship between the sequence number of the newly added sequence number and the terminal identifier is established, and the relationship between the established sequence number and the terminal identifier mapping relationship or the newly added
  • the serial number is sent to the terminal.
  • the access network receives the sequence number request information sent by the terminal; determines the group identity of the terminal according to the service class information of the terminal carried by the sequence number request information; Whether the group identifier and the terminal identifier mapping relationship information corresponding to the group identifier are saved; if the group identifier and the terminal identifier mapping relationship information corresponding to the group identifier are saved, the relationship between the group identifier and the terminal identifier is determined.
  • the group identifier included in the information or the group identifier and the group identifier included in the terminal identifier mapping relationship information are sent to the terminal; if there is no group identifier and terminal identifier mapping relationship information corresponding to the group identifier, the group is created. And mapping the relationship between the group identifier and the terminal identifier, and sending the established group identifier and the terminal identifier mapping relationship information to the terminal.
  • the communication network element for example, the eNodeB or the MME or the access gateway of the access network, after receiving the sequence number request information sent by the terminal, performs the sequence number allocation, as described above, and details are not described herein again.
  • the access network such as a NodeB or RC of the access network, receives the sequence number request information sent by the terminal through a RRC CONNECTION REQUEST or a RRC CONNECTION SETUP COMPLETE. .
  • the communication network element establishes a group-based Signaling Radio Bearer (SRB) and a group-based Dedicated Radio Bearer (DRB) for each group. For example, the communication network element establishes a group-based RC for each group. Links and data hosting.
  • SRB Signaling Radio Bearer
  • DRB Dedicated Radio Bearer
  • RC Dedicated Radio Bearer
  • the communication network element such as an eNodeB or an MME or an access gateway of the access network, sends a paging message to all terminals corresponding to the group identifier, where the paging message includes the All members of the group access information, and the access information includes group-based signaling radio bearers and group-based data radio bearers of the group of members.
  • the terminal in each group accesses the network, according to the mapping relationship between the group identifier and the terminal identifier, the terminal allocates the group-based signaling radio bearer and the group-based data radio bearer corresponding to the group to which the group belongs.
  • the communication network element such as an eNodeB or an MME or an access gateway of the access network, allocates a group-based signaling radio bearer and a group-based dedicated data radio. Hosted.
  • the communication network element such as an eNodeB or MME or an access gateway of the access network, will allocate group-based SRBs and group-based DRBs. Give the other Instead of establishing a dedicated signaling connection and data bearer for the terminal.
  • the terminal calculates access information of the access network according to its terminal identifier and group parameters before accessing the network.
  • the group parameters include: a data transmission period T; a time period i for reporting data each time and a maximum number of users (N) that can be reported in the reporting period.
  • the calculation method of the access information may be as follows.
  • SFN system frame number
  • UE ID can be Any symbol uniquely used to identify the terminal, such as IMSI, MSISDN, IP addr, IMPU, IMPI, etc., may also be a custom identifier.
  • the network can assign UEs with the same p-value to different groups, and assign a group-based connection to each group.
  • step 404 may occur before step 403.
  • the signaling overhead of establishing a signaling connection and a data bearer can be reduced.
  • FIG. 5 it is a schematic flowchart of a network connection method according to another embodiment of the present invention, and the method for accessing the network may be as follows.
  • the terminal receiving network according to the mapping relationship between the group identifier and the terminal identifier, the group-based signaling radio bearer and the group-based data radio bearer corresponding to the group to which the terminal belongs.
  • the terminal initiates network access by using the group-based signaling radio bearer and the group-based data radio bearer.
  • the terminal may be a mobile terminal or a fixed terminal, for example, an MTC terminal, that is, a terminal in various scenarios such as intelligent transportation, telemedicine, monitoring, smart grid, environment detection, and smart home. All terminals in the same cell correspond to the same group identifier, or terminals in the same cell are divided into different groups according to different service types.
  • the terminals of the same group receive the sequence number assigned by the network, and each terminal in the group initiates network access by sequence number in a time division manner.
  • the terminal receives the group identity sent by the network.
  • the terminal further receives a data reporting period (T) sent by the network and a time period (i) for reporting the data each time; or, the terminal further receives the data reporting period (T) and the report sent by the network.
  • T data reporting period
  • i for reporting the data each time
  • the terminal further receives the data reporting period (T) and the report sent by the network.
  • the maximum number of users (N) reported in the period; or, the terminal also receives the maximum number of users (N) reported in the reporting period sent by the network and the time period (i) of each reported data.
  • the access information of the access network is calculated according to the terminal identifier and the group parameter, where the group parameter includes: a data sending period T; The time unit i or the maximum number of users N that can be reported during the reporting period.
  • the access information for calculating the access network is calculated by the following formula:
  • SFN system frame number at which the terminal accesses the network
  • i represents the time period during which data is reported
  • T represents the data transmission period
  • floor represents rounding down
  • mod represents modulo
  • k is an integer greater than or equal to zero.
  • the network can assign UEs with the same p-value to different groups, and assign a group-based connection to each group.
  • each terminal initiates network access by using the group-based signaling radio bearer and the group-based data radio bearer, which can reduce signaling overhead for establishing signaling connection and data bearer, and can improve the system. capacity.
  • FIG. 6 is a schematic flowchart diagram of a network connection method according to another embodiment of the present invention, as follows.
  • FIG. 7 it is a schematic diagram of a network architecture of an evolved system, where the evolved system includes a mobility management entity (Mobility Management Entity, MME service SAE gateway ( Serving SAE).
  • MME service SAE gateway Serving SAE
  • PDN Packet Data Network, Packet Data Network
  • the MME is responsible for mobility management of the control plane, including user context and mobility state management, assigning user temporary identity, etc., corresponding to the control plane portion of the current GPRS/UMTS system internal service GPRS support section SGSN.
  • the Serving SAE GW is responsible for initiating paging for downlink data in idle state, managing and storing IP bearer parameters and intra-network routing information, etc., corresponding to the current GPRS/UMTS system internal SGSN and Gateway GPRS Support Node Network (GGSN).
  • the PDN SAE GW acts as a user plane anchor between different access systems.
  • PCRF Policy and Charging Rule Function
  • the Home Subscriber Server (HSS) is used to store user subscription information.
  • the Mobility Management Entity is connected to the eNB through the Sl-MME interface, and the Serving SAE GW is connected to the eNB through the S1-U interface.
  • the two eNBs are connected through the X2 interface. .
  • the network connection process of the evolved system and the terminal can be mainly as follows.
  • the MTC UE1 sends a random access preamble to prepare to access the network. For example, suppose there are at least two terminals in a group, such as MTC UE1 and MTC UE2, where MTC
  • UE1 is the terminal in the group that originally applied for access to the network.
  • MTC UE1 sends a random access preamble to the eNodeB (Random access preamble ⁇ )
  • the eNodeB sends a random access response message to the MTC UE1.
  • the random access response message may include uplink grant (UL grant) information and uplink time alignment TA (time alignment) information.
  • the MTC UE 1 saves the TA information.
  • the MTC UE1 sends an R C connection establishment request message (RRC connection request) to the eNodeB.
  • RRC connection request R C connection establishment request message
  • the eNodeB returns an RRC connection setup message (RRC setup) to the MTC UE1.
  • RRC setup RRC connection setup
  • the eNodeB returns an RRC Connection Setup message to the MTC UE1, where the RRC Connection Setup message carries the assigned group identity, such as a group-based group C-R TL
  • the MTC UE1 sends an RRC connection complete message to the eNodeB.
  • the RRC connection complete message carries an initial registration request message.
  • the MTC UE1 may also separately send an initial registration request message to the eNodeB without completing the message carrying by the RRC connection.
  • the eNodeB forwards the initial registration request message to a core network.
  • the eNodeB sends the initial registration request message to the HSS.
  • the eNodeB requests the core network to group information with the MTC device, and the core network sends the group parameter to the eNodeB.
  • the eNodeB allocates a group identifier to the MTC UE1, and establishes a mapping relationship between the group identifier and the terminal identifier, and the group identifier assignment and the mapping relationship establishment process are specifically described above, and are not described herein again.
  • the PDN GW sends the group parameters to the eNodeB through the MME, and the group parameters include the group identifier.
  • the eNodeB may also send the mapping relationship between the group identifier and the terminal identifier to the MTC UE1.
  • the group parameter further includes: a data sending period T; a time unit i for sending data each time or a maximum number N of users that can be reported in the reporting period.
  • eNodeB and MTC UE1 start security mode control (SMC, Security Mode Control) » based on the group of parameters combined with the RAN side packet rule, in LTE, after the initial security mode process is initiated, both the eNodeB and the MTC UE1 start the security mode.
  • SMC Security Mode Control
  • the eNodeB initiates an initial security mode process and establishes a group-based RB establishment process.
  • the eNodeB and the MTC UE1 complete the group DRB establishment.
  • MTC UE1 sends uplink data (UL data) to the network.
  • UL data uplink data
  • the MTC UE1 sends the UL data to the eNodeB, MME, PDN GW and HSS.
  • the eNodeB and the MME complete the connection establishment.
  • the signaling overhead of establishing a signaling connection and a data bearer can be reduced.
  • FIG. 8 is a schematic flowchart of a network connection method according to another embodiment of the present invention.
  • the MTC UE2 sends a Random access preamble to the eNodeB to prepare to access the network.
  • the eNodeB sends a Random Access Response message to the MTC UE2, where the message includes a UL grant (uplink grant) and an uplink TA (time alignment information).
  • MTC UE2 saves the TA value
  • the MTC UE2 sends an R C connection establishment request message to the eNodeB.
  • the eNodeB notifies the group parameter of the MTC UE2 in the R C connection setup message, such as a group-based SRB and a group identifier, for example, a group-based group C-R TI.
  • the MTC UE2 attaches an initial registration request message to the RRC Connection Complete message, and the eNodeB forwards the initial registration request message to the core network.
  • the eNodeB determines that the MTC UE2 and the MTC UE1 belong to the same group according to the group parameter of the core network and the grouping rule of the RAN side, and performs SMC and notifies the group-based DRB information to the MTC UE2.
  • the MTC device can maintain the UL TA based on the timing of the DL, and the UE remains in the connected state.
  • the terminals in the group are time-divisionally used according to the order in the group. There are two ways to share a DRB:
  • SPS uplink semi-persistent scheduling
  • the MTC UE1 transmits the uplink data using the network-configured group-based DRB and the corresponding SPS configuration at a predetermined time (e.g., transmission period) of the application layer and/or the access side.
  • a predetermined time e.g., transmission period
  • the corresponding SPS configuration refers to resource blocks used by different users.
  • the eNodeB knows that the data of the MTC UE1 has been completed, and prepares for the transmission of the next MTC terminal; the data of each MTC terminal can be optimized by using one packet, thereby eliminating the sorting. step.
  • the eNodeB knows that the data of the MTC UE1 has ended. There are two methods as follows: 1) Based on the transmission period of the initial terminal of the group, for example, the transmission period of the MTC UE1, both the eNodeB and the MTC UE1 know what the transmission period is, when the period expires. At the time, the eNodeB knows that the MTC UE1 data has ended. In another mode, when the MTC UE1 ends the data transmission, it sends an empty BSR (buffer status report) to the eNodeB, and the eNodeB determines, based on the empty BSR, that the MTC UE1 has terminated the service transmission.
  • BSR buffer status report
  • the terminal in the group uses the shared DRB according to the order in the group.
  • the operation of the MTC UE2 is the same as that of the MTC UE1, and is not described here.
  • the MTC terminals in all groups use the group identifier, such as the group C-R TI, to perform dynamic scheduling of resources for SR requests according to certain packet and discrete rules at the time specified by the eNodeB.
  • group identifier such as the group C-R TI
  • the MTC UE1 performs uplink data transmission at a specified time on the application layer and/or the access side, which sends an SR request to the eNodeB.
  • the eNodeB knows the type of service of the MTC UE1, directly allocate the resources required by the service to the MTC.
  • the BSR request can be omitted.
  • the MTC UE1 If the eNodeB allocates a BSR resource to the MTC UE1, then the MTC UE1 sends a resource request through the BSR. After the MTC UE1 completes the data transmission, it sends an empty BSR to the eNodeB.
  • the eNB After the eNB knows that the data of the MTC UE1 has been completed, it prepares for the transmission of the next MTC terminal; the data of each MTC terminal can be optimized by using one packet by optimization, thereby eliminating the step of sorting.
  • the ROHC of the PDCP layer if set, uses a one-way ROHC, and in another embodiment of the invention, the ROHC of the PDCP may not be needed.
  • MTC UE2 The operation of MTC UE2 is the same as that of MTC UE1.
  • the signaling overhead of establishing a signaling connection and a data bearer can be reduced.
  • FIG. 9 is a schematic flowchart diagram of a method for network connection according to another embodiment of the present invention.
  • the first UE in each group initially accesses the network.
  • the network assigns a group-based SRB and a group-based DRB.
  • the UEs that are subsequently accessed in the group obtain the group-based SRB of the group, and can also obtain the group identifier, such as group-CR TI, the group-ID of the group in which the group is located, and the sequence number and transmission period in the group.
  • the network broadcasts the group DRB-based configuration information of the group, and is used by the MTC terminal in the group to send data uplink. Or network multicast group-based RBs are given to group users.
  • the terminal in the group sends uplink data based on the group-based DRB or the group-based RB connected to the network.
  • the UEs in the group for example, the MTC UE1 and the MTC UE2, use the shared DRB according to the order in the group, as described in the foregoing manner, B, and will not be described here.
  • the base station in the initial access, after the establishment of the group-based SRB and the DRB, after the UE accesses, the base station directly informs the UE of the DRB configuration based on the group, and does not need to go from the core network to the access network end. The establishment of a new bearer at the end.
  • the network configures the semi-static scheduling resources of the SPS according to the data transmission period and the transmission data size allocated to the UE.
  • the MTC terminals in all groups perform SR request with the group CR TI according to a certain packet and discrete rule at the time specified by the eNodeB, and if the eNodeB knows the service type of the MTC terminal, directly allocates the service.
  • the required resources are given to the MTC terminal; the BSR request can be omitted at this time.
  • the eNodeB allocates BSR resources to the MTC terminal, and then the MTC terminal sends a resource request through the BSR.
  • the eNodeB After knowing that the MTC data has been completed, the eNodeB prepares for the transmission of the next MTC terminal, and can optimize the data of each MTC terminal by using one packet, thereby eliminating the step of sorting.
  • the communication network element 100 may be a device in an access network or a device in a core network, and may also be a device in a core network. Set up a device separately.
  • the communication network element may be a NodeB or an RNC of an access network in a WCDMA network.
  • the communication network element may be an eNodeB or an MME or an access gateway in an LTE system.
  • the communication network element can It is a BTS or BSC in a GSM or CDMA system.
  • the communication network element 100 may include a grouping unit 1001, a mapping establishing unit 1003, a resource establishing unit 1005, and an allocating unit 1007.
  • the grouping unit 1001 is configured to group a plurality of terminals and allocate a group identifier.
  • the mapping establishing unit 1003 is configured to establish a mapping relationship between the group identifier and the terminal identifier.
  • the resource establishing unit 1005 is configured to establish a group-based group for each group.
  • Radio bearers and group-based data radio bearers are configured to group a plurality of terminals and allocate a group identifier.
  • the grouping unit 1001 is specifically configured to: allocate the same group identifier to all terminals in the same cell, and establish a mapping relationship between the group identifier and the terminal identifier; or
  • the service type is divided into different groups, different group identifiers are assigned to different groups, and the mapping relationship between the group identifier and the terminal identifier is established.
  • the grouping unit 1001 is further configured to assign a sequence number to the terminals of the same group, and establish a mapping relationship between the sequence number and the terminal identifier, so that each terminal in the same group is sequentially connected in a time division manner. Into the network.
  • FIG. 11 is a schematic diagram of another structure of a communication network element 100 according to another embodiment of the present invention.
  • the communication network element 100 further includes a determining unit 1002, configured to determine, according to the terminal identifier, whether the terminal identifier is used before The mapping relationship information of the group identifier and the terminal identifier corresponding to the terminal identifier is saved; if the mapping relationship information of the group identifier and the terminal identifier is not saved, the grouping unit 1001 is configured to determine the group to which the terminal belongs, The terminal assigns a group identifier and establishes a mapping relationship between the group identifier and the terminal identifier.
  • the determining unit 1002 is configured to: when determining, according to the terminal identifier, that the mapping relationship information of the group identifier and the terminal identifier corresponding to the terminal identifier is not saved, and determining that there is no assignable group at the same time
  • the grouping unit 1001 is configured to add a group identifier to the terminal, and establish a mapping relationship between the newly added group identifier and the terminal identifier.
  • the communication network element 100 further includes a receiving unit 1004 and a querying unit 1005, where the receiving unit 1004 is configured to receive a group identifier sent by the terminal, and the querying unit 1005 is configured to query Whether the mapping relationship between the group identifier and the terminal identifier corresponding to the group identifier is stored; if there is no mapping relationship between the group identifier and the terminal identifier, the grouping unit 1001 is configured to establish a mapping relationship between the group identifier and the terminal identifier.
  • the communication network element 100 further includes: a sending unit 1008, configured to send a data reporting period (T) to the terminal and a time period (i) for reporting the data each time; or, to the terminal Send data reporting period (T) and the maximum number of users reported in the reporting period (N); or, the terminal sends the maximum number of users (N) reported in the reporting period and the time period (i) in which the data is reported each time.
  • a sending unit 1008 configured to send a data reporting period (T) to the terminal and a time period (i) for reporting the data each time; or, to the terminal Send data reporting period (T) and the maximum number of users reported in the reporting period (N); or, the terminal sends the maximum number of users (N) reported in the reporting period and the time period (i) in which the data is reported each time.
  • the sending unit 1008 is further configured to: use the system identifier, the RRC CONNECTION SETUP message, and the physical channel reconfiguration message (PHYSICAL CHANNEL RECONFIGURATION radio bearer reconfiguration)
  • the message (RADIO BEARER RECONFIGURATION) or the MAC header is carried and sent to the terminal.
  • the group identifier is a group cell wireless network temporary identifier (C-R TI ).
  • the communication network element 100 further includes: a paging unit 1010, configured to send a paging message to all terminals corresponding to the group identifier, where the paging message includes all members of the group Access information, the access information includes a group-based signaling radio bearer and a group-based data radio bearer of the group of members.
  • a paging unit 1010 configured to send a paging message to all terminals corresponding to the group identifier, where the paging message includes all members of the group Access information, the access information includes a group-based signaling radio bearer and a group-based data radio bearer of the group of members.
  • FIG. 12 is a schematic structural diagram of a terminal 120 according to another embodiment of the present invention, where the terminal 120 includes a mobile terminal or a fixed terminal or an MTC terminal.
  • the MTC terminal refers to a terminal that uses M2M communication, and can be a terminal in various scenarios such as intelligent transportation, telemedicine, monitoring, smart grid, environment detection, and smart home.
  • the terminal 120 includes a receiving unit 1201 and an access unit 1203.
  • the receiving unit 1201 is configured to receive, according to a mapping relationship between the group identifier and the terminal identifier, a group-based signaling radio bearer and a group-based data radio bearer corresponding to the group to which the terminal belongs.
  • the access unit 1203 is configured to initiate network access by using the group-based signaling radio bearer and the group-based data radio bearer.
  • the receiving unit 1201 is further configured to: receive a data reporting period (T) sent by the network, and a time period (i) of each reported data; or receive a data reporting period (T) and a reporting period sent by the network.
  • T data reporting period
  • T time period
  • i time period
  • N maximum number of users
  • the receiving unit 1201 is configured to receive a sequence number allocated by the network to the terminal 120, and the access unit 1203 is configured to initiate network access by a sequence number in a time division manner.
  • the terminal 120 further includes: a calculating unit 1205, configured to Before the initiating unit initiates the network access, the access information of the access network is calculated according to the terminal identifier and the group parameter, where the group parameters include: a data sending period (T); a time period (i) and a reporting period of each reporting data The maximum number of users reported internally (N).
  • i represents the time period during which data is reported
  • T represents the data transmission period
  • floor represents rounding down
  • mod represents modulo
  • k is an integer greater than or equal to zero.
  • a communication system includes the communication network element 100 and the terminal 120, and the communication network element 100 is configured to group multiple terminals, assign a group identifier, and establish a group. a mapping relationship between the identifier and the terminal identifier; group-based signaling radio bearers and group-based data radio bearers are set for each group; when the terminals in each group access the network, according to the mapping relationship between the group identifier and the terminal identifier, the terminal is The group-based signaling radio bearers and group-based data radio bearers corresponding to the group to which they belong are assigned.
  • the terminal 120 is configured to receive, according to a mapping relationship between the group identifier and the terminal identifier, a group-based signaling radio bearer and a group-based data radio bearer corresponding to the group to which the terminal belongs, and use the group-based data radio bearer;
  • the signaling radio bearer and the group-based data radio bearer initiate network access.
  • the disclosed systems, apparatus, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over 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.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or may be Each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may also be stored in a computer readable storage medium.
  • 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 causing a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, 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.

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Description

一种网络连接方法和系统 本申请要求于 2010年 08月 12日提交中国专利局、 申请号为 201010251783.2、 发 明名称为 "一种网络连接方法和系统" 的中国专利申请的优先权, 其全部内容通过引用 结合在本申请中。
技术领域 本发明涉及通信领域, 尤其涉及一种网络连接方法和系统。
背景技术 现有的大部分移动通信系统中, 例如全球移动通讯系统 (GSM, Global System for
Mobile Communications ), 宽带码分多址 ( WCDMA , Wideband Code Division Multiple Access Wireles ), 码分多址( CDMA, Code Division Multiple Addressing ), 全球微波互 联接入 ( WiMA , Worldwide Interoperability for Microwave Access ), CDMA2000 , TD-SCDMA, 长期演进(LTE, Long Term Evolution )和 WLAN/WiFi各种无线通信系 统中, 终端发起上行业务时, 首先要进行随机接入过程, 此时由于可能存在多个终端同 时发起随机接入, 且选择了相同的接入机会及接入码, 导致产生接入碰撞, 使得此次接 入失败, 接入失败会导致接入延迟增大以及接入成功率降低。 当前移动通信系统中, 一 般釆用配置较多的接入资源, 使得发生碰撞的概率较低, 来保证接入的时延和成功率。
随着移动通信的发展, 出现了机器到机器(M2M, Machine to Machine )通信, 而 物联网 (IOT: Internet of Things )是指 M2M在广域网、 特别是移动运营商网络中的应 用, 即以移动网络运营商的无线网络为平台, 釆用多种传输方式 (例如 CDMA、 GSM 等), 通过特种行业终端, 服务于行机器到机器的无线数据传输业务。 M2M/IOT应用范 围广阔, 可应用于智能交通、 远程医疗、 监控、 智能电网、 环境检测、 智能家居等多种 场景。 目前, M2M和物联网成为运营商关注的热点, 基于 M2M和物联网的各种应用 迅速地发展。 与此前的人与人(H2H, human to human )通信不同, M2M通信的终端数 量会更大, 可以达到 H2H的 10倍, 甚至更多, 例如, 大概 500亿的量级。
机器类型通信 (MTC, Machine Type Communication )是指一个或者多个网元之间 在不需要人为参与的情况下进行的网络通讯(即, M2M应用), 如交通控制与管理、 工 厂监控、 远程抄表等应用。 M2M应用中, 多个具有相同 M2M应用的 M2ME ( Machine To Machine Equipment; 机器对机器设备)组成一个整体, 简称群(Group )。
机器类型通信设备标识应能唯一标识一个 M2M 终端, 可釆用国际移动用户标识 ( IMSI, International Mobile Subscriber Identity 移动台国际 ISDN号码 ( MSISDN, Mobile Station International ISDN Number IP地址( IP addr IP 多媒体公共标识( IMPU, IP Multimedia Public Identity ), IP 多媒体私有标识( IMPI, IP Multimedia Private Identity ) 等。
由于无线通信的资源有限性, 因此只有在用户需要进行通信时才分配相应的时频资 源。 用户需要发起通信时, 首先要进行的是随机接入过程, 然后进一步无线资源控制 (R C)连接建立和数据传输, 最后在通信完毕时释放占用资源。 以 LTE为例, 随机接入 资源包括两部分, 一是发起随机接入的时隙和频率, 二是使用的前导序列 (Preamble )。 现有蜂窝无线通信系统中, 随机接入主要分为基于竟争和基于非竟争的两种方式。
基于非竟争的随机接入方式是指基站(eNB )通知用户终端(UE, User Equipment ) 使用其独有的接入资源, 由于需要 eNB 来进行分配接入资源, 因此系统开销较大, 一 般只用在对时延要求高的场景, 如切换和掉话时。
基于竟争的随机接入方式, eNB会在广播消息中指出本小区允许发起随机接入的接 入资源信息, 然后 UE随机选取一个允许的 Preamble, 并在下一个允许随机接入的时刻 中随机选择随机接入频率资源, 然后在选择的随机接入时频位置发起随机接入。 由于各 个 UE是独立随机选择随机接入资源的, 当多个 UE选择同样的随机接入资源时, 则会 产生冲突, 根据现有协议中的冲突解决方案, 产生冲突的多个 UE至多只有一个能够成 功接入, 其他 UE均需要退避一段时间再次发起接入尝试, 当再发生冲突时再退避, 直 达成功接入或达到接入尝试最大值为止。 发生冲突会延长终端接入的时间, 并给网络和 终端带来额外的负担。
但参与 M2M通讯的终端数量非常庞大, 而每一个终端的交互流量可能非常小, 而 且交互可能是突发的; M2M终端(也可以称为 MTC终端)所实现的功能相对比较单一, 只需要完成特定的一些信息传输交互; 有些 M2M终端的位置可能是相对固定的, 或者 很少移动; 一个特定应用下的 M2M的终端行为是一致的。
M2M业务中, 由于 MTC终端的数量庞大, 大量 MTC终端如果接入网络, 竟争网 络资源, 给现有网络带来了新的负担, 特别是在一些应用场景中, 如智能抄表业务。
以智能交通为例, 一个典型的智能交通系统包括 GPS (全球定位系统, Globe Positioning System ) /GLONASS (俄全球导航卫星系统)卫星定位系统、 移动车载终端、 无线网络和智能交通系统( ITS , Intelligent Transport Systems )控制中心。 车载终端通过
GPS模块接收导航卫星网络的测距信息, 将车辆的经度、 纬度、 速度、 时间等信息传给 微控制器; 通过视频图像设备釆集车辆状态信息; 微控制器通过 GPRS模块与 ITS控制 中心进行双向的信息交互, 完成车辆监控等功能。
另一个例子, 以智能电网为例, 智能电网需要所有智能电网终端周期的进行数据上 报, 例如, 电子抄表业务, 所有的智能电网终端都是在某一特定时间向某一特定服务器 上传数据。 例如, 很多国家的智能电网要求大量的 MTC终端以 5分钟为周期频繁发送 上行的抄表数据, 且抄表数据的数据比较小。
现有网络中, 终端发送上行数据需要建立专用的信令连接及专用的数据承载, 网络 为每个终端分配专用的小区无线网络临时标识( C-RNTI, Cell Radio Network Temporary Identity )。每次上行数据发送完毕, UE释放无线资源控制( R C, Radio Resource Control ) 连接进入 IDLE状态。
例如, 在智能监控或测量的应用场景下, 大量的 MTC终端需要周期性的频繁的上 报数据量小的数据包, 每次发送数据时, 大量的 MTC终端建立信令连接和数据无线承 载会产生大量的信令开销, 大量消耗网络资源。
为了克服这种频繁的状态转换带来的大量的信令开销的问题, 现有技术中可以始终 保持 MTC终端在连接状态, 但是如果 MTC终端保持在连接状态, 就会占用网络大量 的配置资源, 比如 C-R TL
另外, 在现有技术中, 如果釆用 H2H通信, 一个小区需要支持 16K ( 14bits ) 的用 户, 如果 MTC终端被 31入则可能导致 C-RNTI的缺乏。
因此, M2M通信中, MTC终端频繁的周期性的发送数据时, 频繁建立信令连接及 数据承载会产生大量的信令开销, 还可能导致 C-R TI的缺乏。
发明内容
本发明的实施例提供一种网络连接方法和系统, 可以降低建立信令连接及数据承载 的信令开销。
本发明的一方面公开一种网络连接的方法,网络对多个终端进行分组,分配组标识, 并建立组标识和终端标识的映射关系; 网络为每组建立基于组的信令无线承载和基于组 的数据无线承载;每个组内的终端接入网络时,网络根据组标识和终端标识的映射关系, 为终端分配其所属组对应的基于组的信令无线承载和基于组的数据无线承载, 以便终端 利用所述基于组的信令无线承载和基于组的数据无线承载发起网络接入。
本发明的另一方面公开一种网络连接的方法, 终端接收网络根据组标识和终端标识 的映射关系为所述终端分配的其所属组对应的基于组的信令无线承载和基于组的数据 无线承载; 所述终端利用所述基于组的信令无线承载和基于组的数据无线承载发起网络 接入。
本发明的另一方面公开一种通信网元,包括: 分组单元,用于对多个终端进行分组, 分配组标识; 映射建立单元, 用于建立组标识和终端标识的映射关系; 资源建立单元, 用于为每组建立基于组的信令无线承载和基于组的数据无线承载; 分配单元, 用于组内 的终端接入网络时, 根据组标识和终端标识的映射关系, 为终端分配其所属组对应的基 于组的信令无线承载和基于组的数据无线承载。
本发明的另一方面公开一种终端, 包括: 接收单元, 用于接收网络根据组标识和终 端标识的映射关系为所述终端分配的其所属组对应的基于组的信令无线承载和基于组 的数据无线承载; 接入单元, 用于利用所述基于组的信令无线承载和基于组的数据无线 承载发起网络接入。
根据本发明实施例的技术方案, 终端与网络建立连接时, 可以降低建立信令连接及 数据承载的信令开销。
附图说明 为了更清楚地说明本发明实施例的技术方案, 下面将对实施例描述中所需要使用的 附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于 本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其 它的附图。
图 1为本发明一实施例的一种通信系统结构示意图;
图 2为本发明另一实施例的一种 UMTS系统的结构示意图;
图 3为 LTE网络的演进接入网络的网络结构示意图;
图 4为本发明另一实施例的一种网络连接方法的流程示意图;
图 5为本发明另一实施例的一种网络连接方法的流程示意图;
图 6为本发明另一实施例的一种网络连接方法的流程示意图;
图 7为本发明另一实施例的一种演进系统的网络架构示意图; 图 8为本发明另一实施例的一种网络连接方法流程示意图;
图 9为本发明的另一实施例的一种网络连接的方法流程示意图;
图 10为本发明另一实施例的一种通信网元 100的结构示意图;
图 11为本发明另一实施例所述通信网元 100的另一结构示意图;
图 12为本发明另一实施例的一种终端 120结构示意图;
图 13为本发明另一实施例所述终端 120的另一结构示意图。
具体实 式 以下描述中, 为了说明而不是为了限定, 提出了诸如特定系统结构、 接口、 技术之 类的具体细节, 以便透切理解本发明。 然而, 本领域的技术人员应当清楚, 在没有这些 具体细节的其它实施例中也可以实现本发明。 在其它情况中, 省略对众所周知的装置、 电路以及方法的详细说明, 以免不必要的细节妨碍本发明的描述。
本发明的技术方案, 可以应用于各种通信系统, 例如: GSM, 码分多址(CDMA, Code Division Multiple Access ) 系统, TD-SCDMA, CDMA2000, WIMAX, 宽带码分 多址( WCDMA , Wideband Code Division Multiple Access Wireless ), 通用分组无线业务 ( GPRS, General Packet Radio Service ), 长期演进(LTE, Long Term Evolution ) 等。
终端包括移动终端( Mobile Terminal )或固定终端或 MTC终端等。
MTC终端, 是指釆用 M2M通信的终端, 可以是用于智能交通、 远程医疗、 监控、 智能电网、 环境检测、 智能家居等多种场景下的终端。
如图 1所示, 为本发明一实施例的一种通信系统结构示意图, 该通信系统主要包括 接入网 13 , 核心网 15和服务器 17。
其中, 所述接入网 13和核心网 15通过有线或无线通信连接, 例如通过光纤连接。 所述服务器 17可以是一个或多个, 服务器 17和核心网 15通过有线或无线通信连接, 例如通过光纤连接。 所述接入网 13 , 可以通过有线或无线通信连接一个或多个终端 11。
其中, 所述服务器 17可以是 MTC服务器( MTC Server )或其他类型的服务器。 所 述终端 11可以是手机, 固定电话, 计算机, MTC终端等任意可用于通信的终端, 本发 明并不限定。 所述接入网 13, 核心网 15 , 可以分别是 WCDMA, GSN, CDMA或 LTE 等任意制式的通信网络的接入网和核心网, 本发明并不限定。
所述不同制式的通信系统, 是指釆用不同接入技术的通信系统。
例如, 当所述接入网 13, 核心网 15分别为 WCDMA系统的接入网和核心网时, 其 网络结构可以如图 2所示,为本发明另一实施例的一种 UMTS的结构示意图,通用移动 通信系统 (UMTS, Universal Mobile Telecommunication System )是釆用 WCDMA空中 接口技术的第三代移动通信系统, 釆用与第二代移动通信系统类似的结构, 通常也把 UMTS系统称为 WCDMA通信系统。
UMTS系统包括通用陆地无线接入网 ( UTRAN , Universal Terrestrial Radio Access
Network CN与用户设备( User Equipment, UE )„
如图 2所示, UTRAN即陆地无线接入网, 包含一个或几个无线网络子系统(RNS, Radio Network Subsystem )„ 一个 RNS包括一个无线网络控制器( RNC, Radio Network Controller )和一个或多个基站( NodeB )„ RNC与 CN之间的接口是 Iu接口, NodeB和 RNC通过 Iub接口连接。 在 UTRAN内部, 无线网络控制器( RNC )之间通过 Iur互联, Iur可以通过 R C之间的直接物理连接或通过传输网连接。 R C用来分配和控制与之相 连或相关的 NodeB的无线资源。 NodeB则完成 Iub接口和 Uu接口之间的数据流的转换, 同时也参与一部分无线资源管理。
NodeB是 WCDMA系统的基站 (即无线收发信机;), 通过 Iub接口和 R C互连, 主要完成 Uu接口物理层协议的处理。
RN C是无线网络控制器,用于控制 UT RAN的无线资源,主要完成连接建立和断开、 切换、 宏分集合并、 无线资源管理控制等功能。
又例如, 当所述接入网 13 , 核心网 15分别为 LTE系统的接入网和核心网时, 其网 络结构可以如图 3所示, 为 LTE 网络的演进接入网络(E-UTRAN, Evolved-Universal Terrestrial Radio Access Network ) 的网络结构示意图, 包括移动性管理实体 ( Mobility Management Entity, MME ) /服务 SAE网关 ( Serving SAE GW ) 与 eNB。
其中, 所述移动性管理实体 ( Mobility Management Entity, MME ) 与 eNB之间通 过 Sl-MME接口连接, 服务 SAE网关 ( Serving SAE GW ) 与 eNB之间通过 S1-U接口 连接, 两个 eNB之间通过 X2接口连接。
接入网主要包括演进型 eNodeB(eNB)和 MME/SAE GW两部分。 MME/SAE GW是 一个边界节点, 若将其视为核心网的一部分, 则接入网主要由 eNB—层构成。 eNB不 仅具有原来 NodeB的功能外, 还能完成原来 R C的大部分功能, 包括物理层、 MAC 层、 R C、 调度、 接入控制、 承载控制、 接入移动性管理等。 eNB和 eNB之间釆用网 格 (Mesh)方式互连。
上述仅仅举例 WCDMA, LTE通信系统进行示意性说明,在其他制式的通信网络中, 本发明同样也适用, 本发明并不限定。
结合图 1所示的通信系统结构图, 所述通信系统的工作过程可以如下所述。
所述网络, 用于对多个终端进行分组, 并为每组建立基于组的信令无线承载和基于 组的数据无线承载, 每个组内的终端接入网络时, 根据组标识和终端标识的映射关系, 为终端分配其所属组对应的基于组的信令无线承载和基于组的数据无线承载。
在本发明的另一实施例中, 每个组内的终端以时分方式按序接入网络。
例如, 在釆用不同接入技术的网络系统中, 用于对多个终端进行分组, 并为每组建 立基于组的信令无线承载和基于组的数据无线承载, 每个组内的终端接入网络时, 为其 分配所述基于组的信令无线承载和基于组的数据无线承载的实体由一个或多个通信网 元完成, 例如可以是同一个通信网元, 又可以分别是不同的通信网元, 或者一部分功能 由一个通信网元实现, 另一部分功能由另一个通信网元实现, 本发明并不限定。 例如, 所述通信网元可以是接入网中的设备, 又可以是核心网中的设备, 还可以单独设置一个 设备。 例如, 所述通信网元可以是 WCDMA网络中接入网的 NodeB或无线网络控制器 ( R C, Radio Network Controller )„再例如,所述通信网元可以是 LTE系统中的 eNodeB 或 MME或接入网关。再例如,所述通信网元可以是 GSM或 CDMA系统中的基站( BTS, Base Transceiver Station )或基站控制器 ( BSC, Base Station Controller )0
但为描述方便, 下述实施例以 LTE系统为例进行说明, 其他通信系统同样适用。 如图 4所示, 为本发明另一实施例的一种网络连接方法的流程示意图。
401 , 对多个终端进行分组, 分配组标识, 并建立组标识 (组 ID )和终端标识 (终 端 ID ) 的映射关系。
在釆用不同接入技术的网络系统中, 对多个终端进行分组, 并建立组标识和终端标 识的映射关系的通信网元不同, 即所述通信网元可以是接入网中的设备, 又可以是核心 网中的设备, 还可以单独设置一个设备。 例如, 所述通信网元可以是 WCDMA 网络中 接入网的 NodeB或无线网络控制器( RNC , Radio Network Controller )„ 再例如, 所述 通信网元可以是 LTE系统中的 eNodeB或 MME或接入网关。 再例如, 所述通信网元可 以是 GSM或 CDMA系统中的基站( BTS, Base Transceiver Station )或基站控制器( BSC, Base Station Controller )。
所述组标识可以是 group-CR TI, 组 ID号等, 也可以是自定义的标识符。 所述终 端标识(UE ID ), 可以是 IMSI、 MSISDN、 IP addr、 IMPU, IMPI等任意唯一用于标识 终端的符号, 也可以是自定义的标识符。 所述通信网元对多个终端进行分组并建立组标识和终端标识的映射关系的方式可 以有多种。
例如, 通信网元在网络初始配置时, 配置有至少一个组标识, 对同一小区的所有终 端, 分配相同组标识, 并建立组标识和终端标识的映射关系, 例如通信网元根据组标识 从小到大的顺序分配组标识并建立组标识和终端标识的映射关系, 反之亦然。
在本发明的另一实施例中, 还可以对同一小区的终端分成多组, 例如, 根据业务类 型的不同分成不同的组, 给不同的组分配不同的组标识, 例如智能电网中进行抄表业务 的终端属于同一组, 交通系统中进行监控业务的终端属于另一组。 例如, 一个小区可以 分配一个或多个组标识, 例如, 可以对该小区的所有终端, 根据终端需要上报业务的类 型不同, 分配不同的组标识, 例如, 该小区内的智能电网终端对应第一组标识, 该小区 内的交通系统终端对应第二组标识, 等等。
在本发明的另一实施例中, 通信网元在分配组标识之前, 还可以根据终端标识判断 是否保存有该终端标识对应的组标识和终端标识的映射关系信息, 如果没有保存所述对 应的组标识和终端标识的映射关系信息, 确定该终端所属的组, 为该终端分配组标识并 建立组标识和终端标识的映射关系, 如果保存有所述对应的组标识和终端标识的映射关 系信息, 就不需要建立组标识和终端标识的映射关系, 可以在后续过程中直接使用该组 标识。
在本发明的另一实施例中, 在根据终端标识判断没有保存所述终端标识对应的组标 识和终端标识的映射关系信息时, 且同时也判断没有可分配的组标识时, 所述网络还可 以增加组标识, 并建立该新增组标识和终端标识的映射关系。
在本发明的另一实施例中, 通信网元还可以给同一组的终端分配序号, 建立序号与 终端标识的映射关系, 以便同一组内的每个终端以时分的方式按序号发起网络接入。
在本发明的另一实施例中, 所述组标识对应多个序号, 且同一小区所有终端对应一 个组标识或同一小区内上报业务类型相同的终端对应同一个组标识。
例如, 所述组标识由服务器配置, 所述通信网元, 例如所述接入网, 例如接入网的 eNodeB或 MME或接入网关, 接收服务器(例如 MTC服务器)发送的组信息, 所述组 信息包括组标识, 所述组标识为终端群组的标识符。 所述通信网元判断终端所属的组, 然后分配该组标识所对应的序号, 例如根据序号从小到大的规律分配, 反之亦然, 然后 建立组标识与终端标识的映射关系, 进一步还可以建立序号与终端标识的映射关系。
再例如, 所述通信网元接收终端上报业务的类型, 查找对应的组标识, 然后分配该 组标识给该终端, 还可以进一步分配序号, 例如根据序号从小到大的规律分配, 反之亦 然, 然后建立组标识与终端标识的映射关系, 进一步还可以建立序号与终端标识的映射 关系。
再例如, 所述组标识由终端上报, 所述通信网元接收终端上报的组标识后, 建立组 标识与终端标识的映射关系, 还可以分配该组标识所对应的序号, 例如根据序号从小到 大的规律分配, 反之亦然, 然后建立序号与终端标识的映射关系。
例如, 在终端上电或注册过程中, 核心网识别终端所在组, 例如, 根据终端上报业 务类型或接入资源识别终端所在组, 通知接入网为终端分配组标识, 并建立组标识与终 端标识的映射关系。
在本发明的另一实施例中,所述通信网元,例如所述接入网,例如接入网的 eNodeB 或 MME或接入网关, 接收终端发送的组标识; 查询是否存储有该组标识对应的组标识 与终端标识的映射关系信息; 如果没有该组标识与终端标识的映射关系信息, 建立该组 标识与终端标识的映射关系; 如果有该组标识对应的组标识与终端标识的映射关系信 息, 就不再进行组标识分配, 后续过程中直接使用该组标识。
402, 将组标识发送给终端。
例如, 所述通信网元, 例如接入网的 eNodeB或 MME或接入网关, 将所述组标识 发送给终端, 其中, 将所述组标识发送给终端是可选的, 也可以不发送。
例如, 所述通信网元, 例如接入网的 eNodeB或 MME或接入网关, 将组标识通过 系统消息、 无线资源控制连接建立( RRC CONNECTION SETUP )消息、 物理信道重配 置消息( PHYSICAL CHANNEL RECONFIGURATION 无线承载重配置消息( RADIO BEARER RECONFIGURATION )或 MAC头等携带并发送给终端。
在本发明的另一实施例中, 所述通信网元, 例如接入网的 eNodeB或 MME或接入 网关, 向终端发送数据上报周期 (T )和每次上报数据的时间段 (i ); 或, 向终端发送 数据上报周期 (T )和上报周期内上报的最大用户数 (N ); 或, 向终端发送上报周期内 上报的最大用户数 (N )和每次上报数据的时间段(i )。
例如, 所述通信网元, 例如接入网的 eNodeB或 MME或接入网关, 还进行序号分 配。 例如, 通信网元接收终端发送的序号请求信息; 根据所述序号请求信息携带的终端 标识和终端所属组标识,查找是否保存有所述终端标识所对应的序号与终端标识映射关 系信息; 如果保存有该终端标识所对应的序号与终端标识映射关系信息, 将所述查到的 序号与终端标识映射关系信息或所述查到的序号与终端标识映射关系信息所包括的序 号发送给所述终端; 如果没有该终端对应的序号与终端标识映射关系信息, 分配序号, 并建立该分配的序号与终端标识映射关系信息。 如果进一步没有可分配的序号, 增加序 号并分配给所述终端, 并建立该新增序号的序号与终端标识映射关系信息, 将所述建立 的序号与终端标识映射关系信息或所述新增的序号发送给所述终端。
例如, 所述接入网, 例如接入网的 NodeB或 RNC, 接收终端发送的序号请求信息; 根据所述序号请求信息携带的终端的业务类别信息确定所述终端的组标识; 根据组标识 查找是否保存有所述组标识所对应的组标识与终端标识映射关系信息; 如果保存有该组 标识所对应的组标识与终端标识映射关系信息, 将所述查到的组标识与终端标识映射关 系信息所包括的组标识或所述查到的组标识与终端标识映射关系信息所包括的组标识 发送给所述终端; 如果没有该组标识所对应的组标识与终端标识映射关系信息, 建立组 标识与终端标识映射关系信息, 将所述建立的组标识与终端标识映射关系信息发送给所 述终端。
例如, 所述通信网元, 例如接入网的 eNodeB或 MME或接入网关, 接收终端发送 的序号请求信息后, 还进行序号分配, 具体如上所述, 在此不再赘述。
例如, 所述接入网, 例如接入网的 NodeB或 R C, 接收终端通过无线资源控制连 接请求 ( RRC CONNECTION REQUEST ) 或无线资源控制连接建立完成 ( RRC CONNECTION SETUP COMPLETE )发送的所述序号请求信息。
403、 为每组建立基于组的信令无线承载和基于组的专用数据无线承载。
通信网元为每组建立基于组的信令无线承载( SRB, Signaling Radio Bearer )和基于 组的专用数据无线承载(DRB, Dedicated Radio Bearer ), 例如, 通信网元为每组建立基 于组的 R C链接和数据承载。
在本发明的另一实施例中, 所述通信网元, 例如接入网的 eNodeB或 MME或接入 网关, 向该组标识所对应的所有终端发送寻呼消息, 所述寻呼消息包含该组所有成员接 入信息, 所述接入信息包括该组成员基于组的信令无线承载和基于组的数据无线承载。
404、 每个组内的终端接入网络时, 根据组标识和终端标识的映射关系, 为终端分 配其所属组对应的基于组的信令无线承载和基于组的数据无线承载。
每个组内第一个终端初始接入网络时, 所述通信网元, 例如接入网的 eNodeB 或 MME或接入网关, 为其分配基于组的信令无线承载和基于组的专用数据无线承载。
在该组内的其他终端(例如, 第二终端)初始接入网络时, 所述通信网元, 例如接 入网的 eNodeB或 MME或接入网关, 将基于组的 SRB和基于组的 DRB分配给该其他 终端而不是为其建立专用的信令连接和数据承载。
在本发明的另一实施例中, 终端在接入网络之前, 根据其终端标识与组参数计算接 入网络的接入信息。 所述组参数包括: 数据发送周期 T; 每次上报数据的时间段 i和上 报周期内能进行上报的最大用户数 (N )。 所述接入信息的计算方法可以如下所述。
上报周期内上报的最大用户数 N=T/i
终端在上报周期内所对应的序列号 p= k+UE ID mod N
终端接入网络的时刻所在的系统帧号 ( SFN , system frame number ) 为: SFN=floor(i*p/10)
终端接入网络的时刻所在的子帧号为 x: x= ( i*p) mod lO
i表示每次上报数据的时间段, T表示数据发送周期, floor表示向下取整, mod表 示取模, k为大于等于 0的整数, 例如 0, 1 , 2, 3等, UE ID可以是 IMSI、 MSISDN、 IP addr、 IMPU, IMPI等任意唯一用于标识终端的符号, 也可以是自定义的标识符。
p值相同的 UE在同一时间接入, 为了不发生碰撞, 网络可将 p值相同的 UE 分配 到不同的组, 并对每个组分配基于组的连接。
上述描述工作过程的步骤, 并没有限定先后顺序, 可以同时发生, 有些步骤也可以 前后替换, 例如步骤 404可以发生在步骤 403之前。
如上所述, 本发明的实施例中, 通过建立基于组的信令无线承载和基于组的专用数 据无线承载, 可以降低建立信令连接及数据承载的信令开销。
如图 5所示, 为本发明另一实施例的一种网络连接方法流程示意图, 该接入网络的 方法可以如下所述。
501 , 终端接收网络根据组标识和终端标识的映射关系为所述终端分配的其所属组 对应的基于组的信令无线承载和基于组的数据无线承载;
503 , 所述终端利用所述基于组的信令无线承载和基于组的数据无线承载发起网络 接入。
其中, 所述终端, 可以为移动终端或固定终端, 例如可以为 MTC终端, 即用于智 能交通、 远程医疗、 监控、 智能电网、 环境检测、 智能家居等多种场景下的终端。 同一 小区的所有终端对应相同的组标识, 或, 同一小区的终端根据业务类型的不同分成不同 的组。
在本发明的另一实施例中, 同一组的终端接收网络分配的序号, 该组内的每个终端 以时分的方式按序号发起网络接入。 在本发明的另一实施例中,终端接收网络发送的组标识。在本发明的另一实施例中, 终端还接收网络发送的数据上报周期 (T )和每次上报数据的时间段 (i ); 或, 终端还 接收网络发送的数据上报周期 (T )和上报周期内上报的最大用户数 (N ); 或, 终端还 接收网络发送的上报周期内上报的最大用户数 (N )和每次上报数据的时间段(i )。
在本发明的另一实施例中, 终端发起网络接入之前, 根据其终端标识与组参数计算 接入网络的接入信息, 所述组参数包括: 数据发送周期 T; 每次上发数据的时间单位 i 或者上报周期内能进行上报的最大用户数 N。
所述计算接入网络的接入信息通过如下公式计算:
上报周期内上报的最大用户数 N=T/i
终端在上报周期内所对应的序列号 p= k+UE ID mod N
终端接入网络的时刻所在的系统帧号 (SFN ) 为: SFN=floor(i*p/10)
终端接入网络的时刻所在的子帧号为 X: x= ( i*p) mod l0
i表示每次上报数据的时间段, T表示数据发送周期, floor表示向下取整, mod表 示取模, k为大于等于 0的整数。
p值相同的 UE在同一时间接入, 为了不发生碰撞, 网络可将 p值相同的 UE 分配 到不同的组, 并对每个组分配基于组的连接。
因此, 本发明的实施例中, 各个终端利用所述基于组的信令无线承载和基于组的数 据无线承载发起网络接入, 可以降低建立信令连接及数据承载的信令开销, 可以提高系 统容量。
如图 6所示, 为本发明另一实施例的一种网络连接方法的流程示意图, 如下所述。 如图 7所示, 为本发明另一实施例的一种演进系统的网络架构示意图, 该演进系统 包括移动性管理实体( Mobility Management Entity, MME 服务 SAE网关( Serving SAE
GW )以及分组数据网系统架构演进网关( PDN (分组数据网, Packet Data Network ) SAE
GW ) 三个逻辑功能实体。
其中, MME负责控制面的移动性管理, 包括用户上下文和移动状态管理, 分配用 户临时身份标识等,对应于当前 GPRS/UMTS系统内部服务 GPRS支持节 SGSN的控制 平面部分。
Serving SAE GW负责空闲状态下为下行数据发起寻呼, 管理保存 IP承载参数和网 络内路由信息等, 对应于当前 GPRS/UMTS系统内部 SGSN和网关 GPRS支持节点网 ( GGSN, Gateway GPRS Support Node ) 的数据平面部分。 PDN SAE GW则充当不同接入系统间的用户面锚点。
策略和计费规则功能实体( Policy and Charging Rule Function, PCRF )用于策略控 制决定和流计费控制功能。
归属网络服务器( Home Subscriber Server, HSS )用于存储用户签约信息。
移动性管理实体 ( Mobility Management Entity, MME ) 与 eNB之间通过 Sl-MME 接口连接, 服务 SAE网关 ( Serving SAE GW ) 与 eNB之间通过 S1-U接口连接, 两个 eNB之间通过 X2接口连接。
所述演进系统与终端的网络连接过程, 主要可以如下所述。
601 , MTC UE1发送随机接入前导 (Random access preamble ), 准备接入网络。 例如, 假设一个群组中有至少两个终端, 例如 MTC UE1和 MTC UE2, 其中, MTC
UE1为该组中最初申请接入网络的终端。
MTC UE1向 eNodeB发送随机接入前导 (Random access preamble λ
602, eNodeB向所述 MTC UE1发送随机接入响应消息 (Random access response)。 所述随机接入响应消息可以包括上行授权( UL grant )信息和上行时间对齐 TA( time alignment )信息。 MTC UE 1保存该 TA信息。
603 , MTC UE1向 eNodeB发送 R C连接建立请求消息( RRC connection request )»
604, eNodeB向 MTC UE1返回 RRC连接建立消息 ( RRC setup )»
eNodeB向 MTC UE1返回 RRC连接建立消息,其中,在该 RRC连接建立消息携带 分配的组标识, 例如基于组的 group C-R TL
605 , MTC UE1向 eNodeB发送 RRC连接完成消息。
其中, 所述 RRC连接完成消息携带初始注册请求消息。 当然, 所述 MTC UE1也可 以向 eNodeB单独发送初始注册请求消息, 而不通过 RRC连接完成消息携带。
606, eNodeB将所述初始注册请求消息转发到核心网。
例如, eNodeB将所述初始注册请求消息发送给 HSS。
607-608, eNodeB请求核心网对与 MTC设备的分组信息, 核心网将组参数发送给 eNodeB。
例如, eNodeB给 MTC UE1分配组标识, 并建立组标识与终端标识的映射关系, 组 标识的分配以及映射关系的建立过程, 具体如前所述, 在此不再赘述。 PDN GW将组参 数通过 MME 发送给 eNodeB, 所述组参数包括组标识。 在本发明的另一实施例中, eNodeB也可以将所述组标识与终端标识的映射关系发送给 MTC UE1。 在本发明的另一实施例中, 所述组参数还包括: 数据发送周期 T; 每次上发数据的 时间单位 i或者上报周期内能进行上报的最大用户数 N。
609, eNodeB和 MTC UEl启动安全模式控制 ( SMC , Security Mode Control )» 基于该组参数结合 RAN侧的分组规则, 在 LTE 中, 发起初始安全模式过程后, eNodeB和 MTC UE1都启动了安全模式后才能建立数据承载并进行数据传输。 eNodeB 发起初始安全模式过程并建立基于组的 RB的建立过程。
610, eNodeB和 MTC UE1完成组 DRB建立。
611-614, MTC UE1将上行数据 ( UL data )发送给网络。
例如, MTC UE1将所述 UL data发送给 eNodeB , MME , PDN GW和 HSS。
615 , eNodeB和 MME完成连接建立。
如上所述, 本发明的实施例中, 通过建立基于组的信令无线承载和基于组的专用数 据无线承载, 可以降低建立信令连接及数据承载的信令开销。
组内后续的每个 MTC UE进行初始注册时通知组 RB。组内的 MTC UE分时使用公 共 DRB, 其物理资源通过调度实现。 例如, 以 MTC UE2作为组内后续的终端为例进行 说明, 如图 8所示, 为本发明另一实施例的一种网络连接方法流程示意图。
801 , MTC UE2向 eNodeB发送 Random access preamble (随机接入前导;), 准备接 入网络。
802, eNodeB为 MTC UE2发送 Random access response (随机接入响应消息), 该 消息包括 UL grant (上行授权)和上行 TA ( time alignment, 时间对齐信息)。
MTC UE2保存该 TA值
803 , MTC UE2向 eNodeB发送 R C连接建立请求消息。
804, eNodeB在 R C连接建立消息里通知 MTC UE2的组参数,例如基于组的 SRB 和组标识, 例如基于组的 group C-R TI。
805-806, MTC UE2在 RRC连接完成消息内附带初始注册请求消息, eNodeB将初 始注册请求消息转发到核心网。
807-809, eNodeB根据核心网的组参数以及 RAN侧的分组规则, 确定 MTC UE2 与 MTC UE1属于同一组中, 并执行 SMC和通知基于组的 DRB信息给 MTC UE2。
810-813 , 由于低移动性, MTC设备可以基于 DL的定时来维护 UL TA, 并且 UE 一直保持在连接状态。
在本发明的另一实施例中, 初次接入网络后, 组内的终端按照组内的排序分时使用 共享 DRB, 使用的方式可以有如下两种:
方式 A
由于有些 MTC业务的数据量相对固定, 且釆用周期上发的方式, 如智能抄表等。 网络在配置基于组的 DRB时,可以配置上行半静态调度( SPS, semi-persistent scheduling ) 模式的传输。 组内的 MTC终端根据初始接入时确定的组内离散规则, 在其各种的发送 时段内使用 SPS资源, 如下描述。
MTC UEl在应用层和 /或接入侧的规定的时间 (例如传输周期)使用网络配置的基 于组的 DRB以及对应的 SPS配置, 发送上行数据。
其中, 对应的 SPS配置, 指不同用户使用的资源块。
在 MTC UEl的发送周期结束时, eNodeB知道 MTC UEl的数据已经结束, 为下一 个 MTC终端的传输做准备; 可以通过优化使得每个 MTC终端的数据使用一个包就发 完, 从而免去排序的步骤。
其中, eNodeB知道 MTC UEl的数据已经结束, 有如下两种方法: 1 )基于该组最 初的终端的发送周期, 例如 MTC UEl的发送周期, eNodeB和 MTC UEl都知道发送周 期是多少, 当周期过期时, eNodeB即知道 MTC UEl数据已经结束。 另外一个方式, 当 MTC UEl结束数据传输时, 发送一个空 BSR ( buffer status report )给 eNodeB, eNodeB 基于该空 BSR确定 MTC UEl 已经结束业务传输。
组内的终端按照组内的排序分时使用共享 DRB, MTC UE2的操作和 MTC UE1的 相同, 在此不再赘述。
方式 B
所有组内的 MTC终端根据某种分组和离散规则在 eNodeB规定的时刻用组标识, 例如组 C-R TI, 进行 SR请求动态的调度资源。
MTC UE1 在应用层和 /或接入侧的规定的时间上进行上行数据的传输, 其发送 SR 请求到 eNodeB。
如果 eNodeB知道 MTC UE1的业务种类, 则直接分配该业务需要的资源给该 MTC
UE1 ; 此时 BSR请求可以省略。
如果 eNodeB分配 BSR资源给 MTC UE1 ,然后 MTC UE1通过 BSR发送资源请求。 当 MTC UE1完成数据发送后, 发送空 BSR给 eNodeB。
eNB知道 MTC UE1的数据已经结束后, 为下一个 MTC终端的传输做准备; 可以 通过优化使得每个 MTC终端的数据用一个包就发完, 从而免去排序的步骤。 PDCP层的 ROHC , 如果设置的话, 则使用单向 ROHC , 在本发明的另一实施例中, PDCP的 ROHC可以不需要。
MTC UE2的操作和 MTC UE1的相同。
如上所述, 本发明的实施例中, 通过建立基于组的信令无线承载和基于组的专用数 据无线承载, 可以降低建立信令连接及数据承载的信令开销。
如图 9所示, 为本发明的另一实施例的一种网络连接的方法流程示意图。
901 , 每个组内的第一个 UE初始接入网络。
每个组内的第一个 UE初始接入网络时, 网络为其分配基于组的 SRB及基于组的 DRB。 组内后续接入的 UE 获得该组的基于组的 SRB , 还可以获得组标识, 例如 group-CR TI, 其所在组的 group-ID和在组内的序号及发送周期。
902, 网络广播该组的基于组 DRB的配置信息, 供组内的 MTC终端上行发送数据 用。 或者网络组播基于组的 RB给组用户。
903-904, 组内的终端基于组的 DRB或基于组的 RB与网络连接, 发送上行数据。 初次接入网络后, 组内的 UE , 例如, MTC UE1和 MTC UE2 , 按照组内的排序分 时使用共享 DRB , 具体如上述方式 、 B所述, 在在此不再赘述。
综上所述, 在初始接入时, 当基于组的 SRB和 DRB建立完成后, 当 UE接入后, 基站直接通知 UE基于组的 DRB配置, 不需要从核心网到接入网的端到端的新的承载 的建立。
在后续的数据发送过程中, 网络在配置 DRB时, 根据给 UE分配的数据传输周期 和传输数据大小, 配置了 SPS的半静态调度资源。 在本发明的另一实施例中, 所有组内 的 MTC终端根据某种分组和离散规则在 eNodeB规定的时刻用组 C-R TI进行 SR请求, 如果 eNodeB知道 MTC终端的业务种类, 则直接分配该业务需要的资源给 MTC终端; 此时 BSR请求可以省略。 eNodeB分配 BSR资源给 MTC终端,然后 MTC终端通过 BSR 发送资源请求。
eNodeB知道 MTC的数据已经结束后, 为下一个 MTC终端的传输做准备, 可以通 过优化使得每个 MTC终端的数据用一个包就发完, 从而免去排序的步骤。
如图 10所示, 为本发明另一实施例的一种通信网元 100的结构示意图, 所述通信 网元 100可以是接入网中的设备,又可以是核心网中的设备,还可以单独设置一个设备。 例如, 所述通信网元可以是 WCDMA网络中接入网的 NodeB或 RNC。 再例如, 所述通 信网元可以是 LTE系统中的 eNodeB或 MME或接入网关。 再例如, 所述通信网元可以 是 GSM或 CDMA系统中的 BTS或 BSC。所述通信网元 100可以包括:分组单元 1001 , 映射建立单元 1003 , 资源建立单元 1005和分配单元 1007。
所述分组单元 1001 , 用于对多个终端进行分组, 分配组标识; 映射建立单元 1003, 用于建立组标识和终端标识的映射关系; 资源建立单元 1005 ,用于为每组建立基于组的 信令无线承载和基于组的数据无线承载; 分配单元 1007, 用于组内的终端接入网络时, 根据组标识和终端标识的映射关系, 为终端分配其所属组对应的基于组的信令无线承载 和基于组的数据无线承载。
在本发明的另一实施例中, 所述分组单元 1001具体用于: 对同一小区的所有终端, 分配相同组标识, 并建立组标识和终端标识的映射关系; 或, 对同一小区的终端根据业 务类型的不同分成不同的组, 为不同的组分配不同的组标识, 并建立组标识和终端标识 的映射关系。
在本发明的另一实施例中, 所述分组单元 1001 还用于为同一组的终端分配序号, 建立序号与终端标识的映射关系, 以便同一组内的每个终端以时分的方式按序接入网 络。
如图 11所示, 为本发明另一实施例所述通信网元 100的另一结构示意图, 所述通 信网元 100还包括判断单元 1002,用于在分配组标识之前,根据终端标识判断是否保存 有该终端标识对应的组标识和终端标识的映射关系信息; 如果没有保存所述组标识和终 端标识的映射关系信息, 所述分组单元 1001 , 用于确定该终端所属的组, 为给该终端分 配组标识并建立组标识和终端标识的映射关系。
在本发明的另一实施例中, 所述判断单元 1002用于在根据终端标识判断没有保存 所述终端标识对应的组标识和终端标识的映射关系信息时, 且同时也判断没有可分配的 组标识时, 所述分组单元 1001用于为该终端新增组标识, 并建立该新增组标识和终端 标识的映射关系。
在本发明的另一实施例中, 所述通信网元 100 还包括接收单元 1004 和查询单元 1005 , 所述接收单元 1004, 用于接收终端发送的组标识; 所述查询单元 1005 , 用于查 询是否存储有该组标识对应的组标识与终端标识的映射关系信息; 如果没有该组标识与 终端标识的映射关系信息,所述分组单元 1001 ,用于建立该组标识与终端标识的映射关 系。
在本发明的另一实施例中, 所述通信网元 100还包括: 发送单元 1008, 用于向终端 发送数据上报周期 (T ) 和每次上报数据的时间段 (i ); 或, 向终端发送数据上报周期 ( T )和上报周期内上报的最大用户数(N ); 或, 向终端发送上报周期内上报的最大用 户数 (N )和每次上报数据的时间段(i )。
在本发明的另一实施例中, 所述发送单元 1008还用于将组标识通过系统消息、 无 线资源控制连接建立 (RRC CONNECTION SETUP ) 消息、 物理信道重配置消息 ( PHYSICAL CHANNEL RECONFIGURATION 无线承载重配置消息 ( RADIO BEARER RECONFIGURATION )或 MAC头携带并发送给终端。
所述组标识为组小区无线网络临时标识 ( C-R TI )。
在本发明的另一实施例中, 所述通信网元 100还包括: 寻呼单元 1010, 用于向该组 标识所对应的所有终端发送寻呼消息, 所述寻呼消息包含该组所有成员接入信息, 所述 接入信息包括该组成员基于组的信令无线承载和基于组的数据无线承载。
上述描述通信网元 100以及通信网元 100所包括单元的功能,仅仅示意性进行描述 概括,具体的功能以及工作过程, 可以参考前述方法实施例的具体描述,在此不再赘述。
如图 12所示, 为本发明另一实施例的一种终端 120结构示意图, 所述终端 120包 括移动终端或固定终端或 MTC终端等。 所述 MTC终端, 是指釆用 M2M通信的终端, 可以是用于智能交通、 远程医疗、 监控、 智能电网、 环境检测、 智能家居等多种场景下 的终端。
所述终端 120包括接收单元 1201和接入单元 1203。
所述接收单元 1201 ,用于接收网络根据组标识和终端标识的映射关系为所述终端分 配的其所属组对应的基于组的信令无线承载和基于组的数据无线承载。 所述接入单元 1203 , 用于利用所述基于组的信令无线承载和基于组的数据无线承载发起网络接入。
所述接收单元 1201还用于: 接收所述网络发送的数据上报周期(T )和每次上报数 据的时间段(i ); 或, 接收所述网络发送的数据上报周期 (T )和上报周期内上报的最 大用户数(N ); 或, 接收所述网络发送的上报周期内上报的最大用户数(N )和每次上 报数据的时间段(i )。
在本发明的另一实施例中, 所述接收单元 1201用于接收网络分配给终端 120的序 号, 所述接入单元 1203 , 用于以时分的方式按序号发起网络接入。
在本发明的另一实施例中, 如图 13所示, 为本发明另一实施例所述终端 120的另 一结构示意图, 所述终端 120还包括: 计算单元 1205 , 用于在所述接入单元发起网络接 入之前, 根据其终端标识与组参数计算接入网络的接入信息, 所述组参数包括: 数据发 送周期 (T ); 每次上报数据的时间段(i )和上报周期内上报的最大用户数(N )。 例如, 所述计算单元 1205通过如下公式计算接入网络的接入信息: 上报周期内上报的最大用户数 N=T/i
终端在上报周期内所对应的序列号 p= k+UE ID mod N
终端接入网络的时刻所在的 SFN为: SFN=floor(i*p/10)
终端接入网络的时刻所在的子帧号为 X: X= ( i*p) mod lO
i表示每次上报数据的时间段, T表示数据发送周期, floor表示向下取整, mod表 示取模, k为大于等于 0的整数。
上述描述终端 120以及终端 120所包括单元的功能, 仅仅示意性进行描述概括, 具 体的功能以及工作过程, 可以参考前述方法实施例的具体描述, 在此不再赘述。
在本发明的另一实施例中, 一种通信系统包括所述通信网元 100和所述终端 120, 所述通信网元 100, 用于对多个终端进行分组, 分配组标识, 并建立组标识和终端标识 的映射关系; 为每组建立基于组的信令无线承载和基于组的数据无线承载; 每个组内的 终端接入网络时, 根据组标识和终端标识的映射关系, 为终端分配其所属组对应的基于 组的信令无线承载和基于组的数据无线承载。 所述终端 120, 用于接收网络根据组标识 和终端标识的映射关系为所述终端分配的其所属组对应的基于组的信令无线承载和基 于组的数据无线承载; 利用所述基于组的信令无线承载和基于组的数据无线承载发起网 络接入。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述描述的系统, 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和方法, 可以 通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示意性的, 例如, 所述单 元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划分方式, 例如多个单 元或组件可以结合或者可以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一 点, 所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置 或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示 的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个 网络单元上。 可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的 目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是 各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单元中。 上述集成的单 元既可以釆用硬件的形式实现, 也可以釆用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时, 也可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质 上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产 品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前述 的存储介质包括: U盘、 移动硬盘、 只读存储器(ROM, Read-Only Memory ), 随机存 取存储器(RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的 介质。 以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限于此, 任何 熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到变化或替换, 都应 涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应所述以权利要求的保护范围 为准。

Claims

权利要求
1、 一种网络连接的方法, 其特征在于, 包括:
对多个终端进行分组, 分配组标识, 并建立组标识和终端标识的映射关系; 为每组建立基于组的信令无线承载和基于组的数据无线承载;
每个组内的终端接入网络时, 根据组标识和终端标识的映射关系, 为终端分配其所 属组对应的基于组的信令无线承载和基于组的数据无线承载, 以便终端利用所述基于组 的信令无线承载和基于组的数据无线承载发起网络接入。
2、 如权利要求 1所述的方法, 其特征在于, 所述对多个终端进行分组, 分配组标 识, 并建立组标识和终端标识的映射关系具体包括:
对同一小区的所有终端, 分配相同组标识, 并建立组标识和终端标识的映射关系; 或
对同一小区的终端根据业务类型的不同分成不同的组, 为不同的组分配不同的组标 识, 并建立组标识和终端标识的映射关系。
3、 如权利要求 1所述的方法, 其特征在于, 还包括:
在分配组标识之前,根据终端标识判断是否保存有该终端标识对应的组标识和终端 标识的映射关系信息, 如果没有保存所述组标识和终端标识的映射关系信息, 确定该终 端所属的组, 为给该终端分配组标识并建立组标识和终端标识的映射关系; 如果保存有 所述组标识和终端标识的映射关系信息, 在后续过程中直接使用该组标识。
4、 如权利要求 3所述的方法, 其特征在于, 还包括:
在根据终端标识判断没有保存所述终端标识对应的组标识和终端标识的映射关系 信息时, 且同时也判断没有可分配的组标识时, 为该终端新增组标识, 并建立该新增组 标识和终端标识的映射关系。
5、 如权利要求 1所述的方法, 其特征在于, 还包括:
接收终端发送的组标识;
查询是否存储有该组标识对应的组标识与终端标识的映射关系信息;
如果没有该组标识与终端标识的映射关系信息,建立该组标识与终端标识的映射关 系; 如果保存有所述组标识和终端标识的映射关系信息, 在后续过程中直接使用该组标 识。
6、 如权利要求 1-5任意一项所述的方法, 其特征在于, 还包括:
为同一组的终端分配序号, 建立序号与终端标识的映射关系, 以便同一组内的每个 终端以时分的方式按序接入网络。
7、 如权利要求 1-5任意一项所述的方法, 其特征在于, 还包括:
将组标识通过系统消息、 无线资源控制连接建立( R C CONNECTION SETUP )消 息、 物理信道重配置消息( PHYSICAL CHANNEL RECONFIGURATION 无线承载重 配置消息 ( RADIO BEARER RECONFIGURATION )或 MAC头携带并发送给终端。
8、 如权利要求 1所述的方法, 其特征在于, 还包括:
向终端发送数据上报周期 (T )和每次上报数据的时间段(i ); 或
向终端发送数据上报周期 (T )和上报周期内上报的最大用户数 (N ); 或 向终端发送上报周期内上报的最大用户数 (N )和每次上报数据的时间段(i )。
9、 如权利要求 1所述的方法, 其特征在于, 还包括:
向该组标识所对应的所有终端发送寻呼消息,所述寻呼消息包含该组所有成员接入 信息, 所述接入信息包括该组成员基于组的信令无线承载和基于组的数据无线承载。
10、 如权利要求 1所述的方法, 其特征在于, 所述组标识为组小区无线网络临时标 识 (C-R TI )。
11、 一种网络连接的方法, 其特征在于, 包括:
终端接收网络根据组标识和终端标识的映射关系为所述终端分配的其所属组对应 的基于组的信令无线承载和基于组的数据无线承载;
所述终端利用所述基于组的信令无线承载和基于组的数据无线承载发起网络接入。
12、 如权利要求 11 所述的方法, 其特征在于, 同一小区的所有终端对应相同的组 标识, 或, 同一小区的终端根据业务类型的不同分成不同的组。
13、 如权利要求 11所述的方法, 其特征在于, 还包括:
同一组的终端接收网络分配的序号,该组内的每个终端以时分的方式按序号发起网 络接入。
14、 如权利要求 11所述的方法, 其特征在于, 还包括:
所述终端接收所述网络发送的数据上报周期 (T )和每次上报数据的时间段(i ); 或
所述终端接收所述网络发送的数据上报周期 (T )和上报周期内上报的最大用户数 ( N ); 或
所述终端接收所述网络发送的上报周期内上报的最大用户数 (N )和每次上报数据 的时间段(i )。
15、 如权利要求 11所述的方法, 其特征在于, 还包括:
终端发起网络接入之前, 根据其终端标识与组参数计算接入网络的接入信息, 所述 组参数包括: 数据发送周期 (T ); 每次上报数据的时间段(i ) 和上报周期内上报的最 大用户数 (N )。
16、 如权利要求 15所述的方法, 其特征在于, 所述计算接入网络的接入信息通过 如下公式计算:
上报周期内上报的最大用户数 N=T/i;
终端在上报周期内所对应的序列号 p= k+UE ID mod N;
终端接入网络的时刻所在的系统帧号 (SFN ) 为: SFN=floor(i*p/10) ;
终端接入网络的时刻所在的子帧号为 X: x= ( i*p) mod lO;
i表示每次上报数据的时间段, T表示数据发送周期, UE ID为终端标识, floor表 示向下取整, mod表示取模, k为大于等于 0的整数。
17、 一种通信网元, 其特征在于, 包括:
分组单元, 用于对多个终端进行分组, 分配组标识;
映射建立单元, 用于建立组标识和终端标识的映射关系;
资源建立单元, 用于为每组建立基于组的信令无线承载和基于组的数据无线承载; 分配单元, 用于组内的终端接入网络时, 根据组标识和终端标识的映射关系, 为终 端分配其所属组对应的基于组的信令无线承载和基于组的数据无线承载。
18、 如权利要求 17所述的通信网元, 其特征在于, 所述分组单元具体用于: 对同一小区的所有终端, 分配相同组标识, 并建立组标识和终端标识的映射关系; 或
对同一小区的终端根据业务类型的不同分成不同的组, 为不同的组分配不同的组标 识, 并建立组标识和终端标识的映射关系。
19、 如权利要求 17所述的通信网元, 其特征在于, 还包括:
判断单元, 用于在分配组标识之前, 根据终端标识判断是否保存有该终端标识对应 的组标识和终端标识的映射关系信息;
如果没有保存所述组标识和终端标识的映射关系信息, 所述分组单元, 用于确定该 终端所属的组, 为给该终端分配组标识并建立组标识和终端标识的映射关系。
20、 如权利要求 17所述的通信网元, 其特征在于, 还包括:
接收单元, 用于接收终端发送的组标识; 查询单元, 用于查询是否存储有该组标识对应的组标识与终端标识的映射关系信 、
如果没有该组标识与终端标识的映射关系信息, 所述分组单元, 用于建立该组标识 与终端标识的映射关系。
21、 如权利要求 17所述的通信网元, 其特征在于, 还包括:
发送单元, 用于向终端发送数据上报周期 (T )和每次上报数据的时间段(i ); 或, 向终端发送数据上报周期 (T )和上报周期内上报的最大用户数 (N ); 或, 向终端发送 上报周期内上报的最大用户数 (N )和每次上报数据的时间段(i )。
22、 如权利要求 17所述的通信网元, 其特征在于, 还包括:
寻呼单元, 用于向该组标识所对应的所有终端发送寻呼消息, 所述寻呼消息包含该 组所有成员接入信息,所述接入信息包括该组成员基于组的信令无线承载和基于组的数 据无线承载。
23、 一种终端, 其特征在于, 包括:
接收单元,用于接收网络根据组标识和终端标识的映射关系为所述终端分配的其所 属组对应的基于组的信令无线承载和基于组的数据无线承载;
接入单元,用于利用所述基于组的信令无线承载和基于组的数据无线承载发起网络 接入。
24、 如权利要求 23所述的终端, 其特征在于, 所述接收单元还用于: 接收所述网 络发送的数据上报周期 (T )和每次上报数据的时间段(i ); 或, 接收所述网络发送的 数据上报周期 (T )和上报周期内上报的最大用户数 (N ); 或, 接收所述网络发送的上 报周期内上报的最大用户数(N )和每次上报数据的时间段(i )。
25、 如权利要求 23所述的终端, 其特征在于, 还包括:
计算单元, 用于在所述接入单元发起网络接入之前, 根据其终端标识与组参数计算 接入网络的接入信息,所述组参数包括: 数据发送周期(T ); 每次上报数据的时间段(i ) 和上报周期内上报的最大用户数 (N )。
26、 如权利要求 25所述的终端, 其特征在于, 所述计算单元通过如下公式计算接 入网络的接入信息:
上报周期内上报的最大用户数 N=T/i;
终端在上报周期内所对应的序列号 p= k+UE ID mod N;
终端接入网络的时刻所在的系统帧号 (SFN ) 为: SFN=floor(i*p/10) ; 终端接入网络的时刻所在的子帧号为 x: x= ( i*p) mod 10;
i表示每次上报数据的时间段, T表示数据发送周期, UE ID为终端标识, floor表示 向下取整, mod表示取模, k为大于等于 0的整数。
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