CN109923879A - Control the core net premature beats of plane evolved packet system - Google Patents

Abstract

Embodiment of the disclosure describes the method and apparatus for preventing the mechanism of the core network overload for control plane data transmission.

Description

Control the core net premature beats of plane evolved packet system

Related application

This application claims the priority for the U.S. Provisional Application No. 62/402,514 submitted for 30th in September in 2016, this faces When apply be hereby incorporated by entirely through reference.

Technical field

Embodiment of the disclosure relates in general to the field of network, and more particularly, to for controlling plane evolution point The devices, systems, and methods of the core net premature beats of group system.

Background technique

It is described in detail below to refer to attached drawing.Identical appended drawing reference can be used in different drawings come identify it is identical or Similar element.In the following description, following detailed description, elaborate such as specific structure, framework, interface, The detail of technology or the like in order to provide the various aspects to each embodiment thorough understanding.However, for benefiting from Those skilled in the art of the disclosure it is evident that each embodiment various aspects can be detached from these details its Implement in his example.In some cases, the description to well known equipment, circuit and method is omitted, in order to avoid unnecessary details The fuzzy description to each embodiment.

The Quick Extended for carrying out the network communication of cellular autofluorescence Internet of Things (" CIoT ") deployment may cause in evolved packet system A large amount of relatively small data transmission are carried out in the core net (" CN ") of (" EPS ").Two kinds of mechanism have been developed to improve this The efficiency communicated a bit.The first mechanism is referred to as user plane CIoT EPS optimization, and the user plane based on user data passes It is defeated.Second of mechanism, which is referred to as, controls plane CIoT EPS optimization, by the way that user data is encapsulated in Non-Access Stratum (" NAS ") Come to transmit user data via mobility management entity (" MME ") in message.

Detailed description of the invention

It will readily appreciate that embodiment by described in detail below in conjunction with attached drawing.In order to promote to describe, identical appended drawing reference Indicate identical structural detail.Embodiment is shown in the diagram of attached drawing by way of example, and not limitation.

Fig. 1 shows the framework of system in accordance with some embodiments.

Fig. 2 shows control plane protocol stacks in accordance with some embodiments.

Fig. 3 shows process in accordance with some embodiments.

Fig. 4 shows the process according to other embodiments.

Fig. 5 shows example operational flow/algorithm structure of user equipment in accordance with some embodiments.

Fig. 6 shows example operational flow/algorithm structure of access node in accordance with some embodiments.

Fig. 7 shows example operational flow/algorithm structure of mobility management entity in accordance with some embodiments.

Fig. 8 shows equipment in accordance with some embodiments.

Fig. 9 shows hardware resource in accordance with some embodiments.

Specific embodiment

In the following detailed description, with reference to forming part thereof of attached drawing, wherein identical appended drawing reference table always Show identical component, and wherein, the embodiment that can be implemented is shown by way of diagram.It should be understood that not departing from this In the case where scope of disclosure, it can use other embodiments, and structure or logical changes can be carried out.

Each operation can be successively described as in a manner of most helpful in theme claimed is understood multiple discrete Movement or operation.However, the sequence of description is not necessarily to be construed as implying that these operations are necessarily dependent upon sequence.Specifically, these Operation can not execute in the order presented.Described operation can be held with the sequence different from described embodiment Row.Various additional operations can be executed in a further embodiment or can be omitted described operation.

For the purpose of this disclosure, phrase " A or B ", " A and/or B " and " A/B " indicates (A), (B) or (A and B).

The phrase " in one embodiment " or " in embodiment " can be used in description, can each refer to for identical or not With one or more of embodiment.In addition, the terms "include", "comprise" used in embodiment of the disclosure, " tool " etc. be synonymous.

Fig. 1 shows the framework of the system 100 of network in accordance with some embodiments.System 100 is shown as including user Equipment (UE) 104.UE 104 can be smart phone (for example it may be connected to the hand-held touch of one or more cellular networks Shield mobile computing device), it is also possible to include any movement or stationary computing devices, for example, personal digital assistant (PDA), Pager, Internet of Things (" IoT ") equipment, intelligence sensor, laptop computer, desktop computer, radio hand-held equipment or packet Include any calculating equipment of wireless communication interface.

In the embodiment that wherein UE 104 includes IoT equipment, it can also include being designed to connect using short-term UE The network access layer of the low-power IoT application connect.IoT UE can be logical using such as machine to machine (" M2M ") or machine type The technology for believing (" MTC ") etc, is used for via public land mobile network (" PLMN "), based on neighbouring service The communication of (" ProSe ") or device-to-device (" D2D "), sensor network or IoT network and MTC server or devices exchange number According to.M2M or MTC data exchange can be the data exchange of machine initiation.IoT network describes interconnection IoT UE, can wrap Embedding assembly equipment can uniquely be identified with (in the Internet infrastructure) connected in short term by including.After IoT UE can be executed Platform promotes the connection of IoT network using (for example, keeping effective message, state update etc.).

UE 104, which can be configured as via Uu interface, connects (for example, being communicatively coupled) radio access network The access node 108 of (" RAN ") 110.RAN 110 can be such as evolved universal terrestrial radio access network (" E-UTRAN ") (in this case, access node 108 can be evolved node B (" eNB ")), next generation RAN (" NG RAN ") are (this In the case of, access node 108 can be next-generation node B (" gNB ")) or some other types RAN.UE 104 can benefit The communicative couplings on Uu interface are realized with air interface protocol.Air interface protocol can be consistent with cellular communication protocol, example Such as, global system for mobile communications (" GSM ") agreement, CDMA (" CDMA ") network protocol, push to speak (" PTT ") agreement, Honeycomb PTT (" POC ") agreement, Universal Mobile Telecommunications System (" UMTS ") agreement, 3GPP long term evolution (" LTE ") agreement, the 5th Generation (" 5G ") agreement, new radio (" NR ") agreement etc..

Access node 108 can terminate air interface protocol, and can be the first communication center of UE 104.In some realities It applies in example, the various logic function of RAN 110, including but not limited to radio network controller may be implemented in access node 108 (" RNC ") function, for example, radio bearer management, uplink and the management of downlink dynamic radio resources and data point Group scheduling and mobile management.

In order to establish the connection with access node 108, UE 104 can execute multiple operations.First operation may include example It is such as synchronized with frequency to identify the operator that UE 104 will be attached thereto.After synchronization, UE 104 can read and locate Block of information is managed, for example, Master Information Block (" MIB ") and system information block (" SIB "), to obtain for accessing by access node 108 The information of the cell of offer.Then, UE 104 can execute random access procedure to request access node 108 to provide to UE 104 Temporary resource for initial communication.After random access procedure, UE 104 can by send RRC connection request message come Radio resource control (" RRC ") connection is established, which can also be referred to as RRC information 3；RRC is received to connect Connect setting message；And send RRC connection and be provided with message, it is properly termed as RRC information 5.It is set up sending RRC connection After message, UE 104 may be at RRC- connection status.

In some embodiments, RRC connection request message may include that (it may include Temporary Mobile Subscriber mark to UE mark Know (" TMSI ") or random value) and connection establish reason.In some embodiments, RRC connection setting message may include using In the default configuration of the first signaling radio bearer (SRB1), and with such as physical uplink shared channel (" PUSCH "), Physical uplink control channel (" PUCCH "), physical down link sharing channel (" PDSCH "), channel quality indicator The relevant other configurations information such as (" CQI ") report, detection reference signal, antenna configuration, scheduling request.In some embodiments In, it may include the NAS layer information specified about the information and UE of selected PLMN that RRC connection, which is provided with message,.

According to some embodiments, UE 104, which can be configured as, to be made according to the various communication technologys by multicarrier communication channel It is communicated with orthogonal frequency division multiplexing (" OFDM ") signal of communication with other UE or access node 108, various communication technology examples Such as, but not limited to, orthogonal frequency division multiple access (" OFDMA ") communication technology (for example, being used for downlink communication) or single carrier frequency division are more Location (" SC-FDMA ") communication technology (for example, for uplink and ProSe or sidelinks communication), but the range of embodiment exists This respect is unrestricted.Ofdm signal may include multiple orthogonal sub-carriers.

In some embodiments, down-chain resource grid can be used for the downlink from access node 108 to UE104 Transmission, and similar technology can be used in uplink transmission.Grid can be T/F grid, referred to as resource grid or Time-frequency resource grid is the physical resource in the downlink in each time slot.This T/F plane indicates It is the usual way of ofdm system, this makes it be intuitive for radio resources allocation.Each column of resource grid and every A row corresponds respectively to an OFDM symbol and an OFDM subcarrier.The duration of resource grid in time domain corresponds to nothing A time slot in line electricity frame.Minimum time-frequency cells in resource grid are represented as resource element.Each resource grid Including multiple resource blocks, which depict the mappings of certain physical channels to resource element.Each resource block includes resource element Set；In a frequency domain, this can indicate the least resource amount that can currently distribute.If in the presence of what is transmitted using such resource block Do different physical down link channels.

User data and higher level signaling can be carried to UE 104 by PDSCH.In addition to other, physical down link control Channel (" PDCCH ") processed can also deliver the information and resource allocation related with PDSCH channel about transformat.It may be used also To notify transformat related with uplink shared channel, resource allocation and hybrid automatic repeat-request (" H- to UE 104 ARQ ") information.In general, downlink chain can be executed in access node 108 based on from the channel quality information that UE 104 is fed back Road scheduling (distribution of UE 104 control and shared channel resources block into cell).It can be used for (for example, distributing to) UE Downlink resource allocations information is sent on 104 PDCCH.

Control channel element (" CCE ") can be used to transmit control information in PDCCH.Be mapped to resource element it Before, PDCCH complex-valued symbol can be organized into four-tuple first, then can be used sub-block interleaver it is replaced with into Row rate-matched.One or more of these CCE can be used to send each PDCCH, wherein each CCE can be corresponded to In nine set for being respectively provided with four physical resource elements, referred to as resource element groups (" REG ").It can be by four orthorhombic phases It moves keying (" QPSK ") symbol and is mapped to each REG.One or more CCE can be used to send PDCCH, this depends on downlink The size and channel condition of link control message (" DCI ").Can be defined in LTE four of CCE with different number or More different PDCCH formats (for example, aggregation level, L=1,2,4 or 8).

The concept of the resource allocation for control channel information can be used in some embodiments, on which is State the extension of concept.For example, some embodiments can use enhanced physical downlink control channel (" EPDCCH "), make Control information transmission is carried out with PDSCH resource.One or more enhanced control channel elements (" ECCE ") can be used to come Send EPDCCH.Similar to above, each ECCE can correspond to nine set for being respectively provided with four physical resource elements, quilt Referred to as enhancement mode resource element group (" EREG ").In some cases, ECCE can have the EREG of other quantity.

RAN 110 can be coupled to core net (" CN ") 116 by S1 interface communication.In some embodiments, S1 connects Communication on mouth can be compatible with S1 Application Protocol (S1AP).In embodiment, CN 116 can be evolution block core The CN of (" EPC ") network, next-generation block core (" NPC ") network or some other types.In this embodiment, S1 interface can To be divided into two parts: S1-U interface, delivery access node 108 and gateway (" S-GW ")/packet gateway (" P- GW ") data on flows between 120；And S1- mobility management entity (" MME ") interface, it is access node 108 and MME Signaling interface between 124.Although being shown together in Fig. 1, S-GW and P-GW alternatively can be in different equipment, clothes It is realized in business device etc..

In this embodiment, CN 116 includes S-GW/P-GW 120, MME 124 and service ability exposure function ("SCEF")128.MME 124 can functionally be similar to traditional services General Packet Radio Service (" GPRS ") Zhi Chijie The control plane of point (" SGSN ").In terms of MME 124 can manage the mobility in access, such as gateway selection and tracing area List management.

The S-GW of S-GW/P-GW 120 can terminate the S1-U interface towards RAN 110, and can be in 110 He of RAN Data grouping is routed between CN 116.In addition, S-GW can be the local mobility anchor for the switching of RAN intermediate node, and It can be provided for ambulant anchor between 3GPP.Other responsibilities may include lawful intercept, charging and some strategy executions.

The P-GW of S-GW/P-GW 120 can terminate the SGi interface towards packet data network (" PDN ") 132.P-GW can To route data grouping between CN 116 and external network (for example, PDN 132).PDN 132 may include application server (" AS ") 136 (alternatively, referred to as application function (" AF ")), communicatedly via Internet protocol (" IP ") interface and CN 116 Coupling.In general, application server 136 can be to provide IP bearing resource and CN 116 (for example, UMTS packet service (PS) Domain, LTE PS data service etc.) element of application that is used together.Application server 136 can be additionally configured to support via CN 116 for UE 104 one or more communication services (for example, voice over internet protocol (VoIP) session, PTT session, Group communication sessions, social networking service etc.).

SCEF 128 can be the equipment for safety and ability that safely exposure is provided by 3GPP network interface. SCEF 128 can be performed various functions, these functions can provide discovery 3GPP network to the entity of such as 3GPP network-external The ability of the service ability of interior component.These functions may include such as certification and authorization, strategy implement, guarantee, charging, visit It asks, be abstracted.SCEF 128 can protect the entity of CN 116 from beyond in the grade of service with third party service provider The request of the license provided in agreement.

The component of system 100 can cooperate to provide one or more PDN connections that UE 104 is connected to PDN 132. PDN connection can use creation default EPS bearing to establish.Default EPS bearing can be related to default quality of service (" QoS ") Connection.If PDN connection will handle the service type for needing specific QoS to handle, for example, voice or video flowing, then can create quilt The additional EPS carrying of referred to as dedicated EPS carrying is simultaneously associated with specific QoS by it.

PDN connection can be the SCEF connection routed by SCEF 128 or be connected by the SGi that S-GW/P-GW 120 is routed It connects.Fig. 1 shows the different routed paths in various PDN connections, can be used for CIoT optimization.Path 1 may be used to Data routing is carried out in SCEF connection with control plane CIoT EPS optimization.This connection is fixed to (pinned to) always and controls Plane processed (in other words, it can not be switched to user plane).Path 2 is used for control plane CIoT EPS optimization and exists Data routing is carried out in SGi connection.The connection may or may not be fixed to control plane.Path 3 is used for user Plane EPS CIoT optimizes (or tradition S1-U) and carries out data routing in SGi connection.

In some cases, if CP has been used to be fixedly connected, user plane (" UP ") and control can be passed through simultaneously Plane (" CP ") sends data.For example, data can be via path 1 and 3, or via 1 He of path in same RRC connection 2 route.If UE 104 is in RRC- connection status, it can only make, and path 2 is connected or path 3 connects effectively, but Cannot make simultaneously two paths effectively (for identical or different PDN), and can only from path 2 be transformed into path 3 (but It is invalid in turn).

Fig. 2 shows control plane protocol stacks in accordance with some embodiments.In this embodiment, control plane 200 is shown Communication protocol stack between UE 104, AN 108 and MME 124 out.

Physics (" PHY ") layer 204 can be sent/be received by medium access control by one or more air interfaces The information that (" MAC ") layer 208 uses.PHY layer 204 can also be performed link from adaptation or adaptive modulation and coding (" AMC "), Power control, cell searching (for example, for initial synchronisation and switching purpose) and the higher by such as rrc layer 220 etc Other measurements used.PHY layer 204, which can also be executed further, entangles the error detection of transmission channel, the forward direction of transmission channel Wrong (" FEC ") coding/decoding, intertexture, rate-matched, is mapped to physical channel and how defeated at the modulating/demodulating of physical channel Enter multiple output (" MIMO ") antenna processings.

MAC layer 208 can between logical channels and transmission channel mapping, will be from one or more logic channels MAC Service Data Unit (" SDU ") be multiplexed on transmission block with via transport channel to PHY layer 204, by MAC SDU From being demultiplexed into one or more logic channels from the transmission block that PHY layer 204 transmits via transmission channel, be multiplexed MAC SDU On to transmission block, scheduling information report, pass through the error correction and bgical channel priority of hybrid automatic repeat-request (" H-ARQ ") Gradeization.

Radio link control (" RLC ") layer 212 can be operated with multiple modes of operation, comprising: transparent mode (" TM "), Unacknowledged mode (" UM ") and affirmation mode (" AM ").Rlc layer 212 can execute upper layer protocol Data Unit (" PDU ") The RLC SDU's that transmission, the error correction for the automatic repeat request (" ARQ ") transmitted by AM data and UM and AM data are transmitted Series connection, Segmentation and Reassembly.The segmentation again of the RLC data PDU of AM data transmission can also be performed, to UM and AM number in rlc layer 212 Repeated data, the discarding UM and AM data biography resequenced according to the RLC data PDU of transmission, detect the transmission of UM and AM data The protocol error and execution RLC of defeated RLC SDU, detection AM data transmission are rebuild.

Packet data convergence protocol (" PDCP ") layer 216 can execute the header suppression and decompression, maintenance of IP data PDCP sequence number (" SN "), the sequence that upper layer PDU is executed when rebuilding lower level transmit, in reconstructed mapped to RLC AM Repetition, encryption and the decryption control plane data of lower level SDU is eliminated when the lower level of radio bearer, executes control number of planes According to integrity protection and integrity verification, control based on timer data abandon and execute safety operation (for example, plus Close, decryption, integrity protection, integrity verification etc.).

The main services and function of rrc layer 220 may include (e.g., including in master relevant to Non-Access Stratum (" NAS ") Block of information (" MIB ") or system information block (" SIB ")) in) broadcast of system information, system information relevant to access layer Paging, foundation, maintenance and the release of RRC connection between broadcast, UE and E-UTRAN are (for example, RRC connects paging, RRC connection Establish, RRC connection modification and RRC Connection Release), point-to-point wireless electricity foundation, configuration, maintenance and the release including close that carry Mobility between the security function of key management, radio access technologies (" RAT ") and the measurement for UE measurement report are matched It sets.The MIB and SIB may include one or more information elements (" IE "), and each information element may include individual number According to field or data structure.

Rrc layer 220 and following layer may be collectively referred to as AS.UE 104 and AN 108 can use Uu interface (for example, LTE- Uu interface) come via including PHY layer 204, MAC layer 208, the protocol stack of rlc layer 212, PDCP layer 216 and rrc layer 220 exchanges Control plane data.

NAS layer 224 can form the top of the control plane between UE 104 and MME 124.NAS layer 224 can prop up The mobility and session management procedure of UE 104 is held, to establish and maintain the IP connection between UE 104 and P-GW.

S1 Application Protocol (" S1-AP ") layer 228 can support the function of S1 interface and including basic process (" EP ").EP It can be the unit of the interaction between AN 108 and CN 116.S1-AP layers of service may include two groups: UE association service and non- UE association service.These service execution functions, including but not limited to: E-UTRAN radio access bearer (" E-RAB ") management, The instruction of UE ability, mobility, NAS signaling transmission, RAN information management (" RIM ") and configuration transmission.

Flow Control Transmission Protocol (" SCTP ") layer (alternatively, referred to as SCTP/IP layers) 232 may insure based on IP layer 236 Between AN 108 and MME 124 signaling message is reliably transmitted in the IP agreement supported.L2 layer 240 and L1 layer 224 can be with Refer to the communication link (for example, wired or wireless) for being used to exchange information by AN 108 and MME 124.

AN 108 and MME 124, which can use S1-MME interface, to be come via including L1 layers XV11, L2 layers XV12, IP layers The protocol stack of XV13, SCTP layers of XV14 and S1-AP layers of XV15 exchanges control plane data.

In conventional systems, eNB can be notified the overload situations of CN by MME by S1-AP, and eNB can make Refuse the decision of the RRC connection request of any UE.However, eNB may still not know that RRC connection request is for via control Plane still sends data via user plane.Therefore, embodiment described herein provide such mode, wherein connects It is for user plane (for example, service request or expansion service request) or for controlling that ingress 108, which can distinguish RRC connection, Plane (for example, the request of control plane service) processed.

In some embodiments, UE 104 can only support control plane CIoT EPS optimization.In these embodiments, it deposits In four kinds of replacement mechanisms, can be provided by these four replacement mechanisms about RRC connection is for user plane or for controlling The information of plane processed.In alternative solution 1, access node 108 can parse in RRC information 5 received NAS message (without It is that NAS message is pellucidly relayed to MME 124) to determine whether it is control plane service request.In alternative solution 2, New CP data instruction can be defined in message 3 (for example, RRC connection request).By new information element or it can pass through New establishes reason to add the new CP data instruction.In alternative solution 3, can be used for RRC information 3 (for example, RRC connection request) new Logic Channel Identifier (" LCID ").It, can be in RRC information 5 (for example, RRC in alternative solution 4 Connection is provided with) the new CP data instruction IE of middle definition.

RRC connection request can be defined as follows, add new CP data instruction will pass through new information element.

RRC connection request

As described above, RRC connection request message be used to request to establish RRC connection.RRC connection request message can believed RAN 110 is sent to from UE 104 on number radio bearer 0 (" SRB0 ")；With transparent mode (" TM ") radio link control System-Service Access Point (" RLC-SAP ")；And it is sent out in the logic channel of such as common control channel (" CCCH ") etc It send.In some embodiments, RRC connection request message can have Abstract syntax notion one as follows (" ASN.l ") knot Structure.

RRC connection request message

As shown, RRC connection request message may include that CP data (CP-Data) field with only CP connects (CP- Only-Connection) field.These fields can be enumeration type field.True (true) value of CP data field can refer to Show and can establish RRC connection with the purpose for sending data via control plane CIoT EPS optimization.Only CP link field True value can indicate that RRC connection is fixed to control plane (for example, RRC connection is only used for sending via control plane optimizing Data and user plane cannot be switched to).

RRC connection can have both signaling radio bearer (SRB) and data radio bearer (DRB).When PDN connection When being referred to as fixed to control plane, as described herein, this can imply that is used only RRC/SRB on the radio interface, without Use RRC/DRB.

In some embodiments, message 3 can only have a spare bit, and therefore can be multiplexed two indicators. For example, only CP connection value can also indicate that CP data.Alternatively, message 3 can rely on bigger UL authorization.

In some embodiments, in alternative solution 2, RRC connection request message can be used for establishing reason via new To provide the instruction of CP data.Establish reason can provide the instruction for requiring connect to network why to UE 104.In some implementations In example, establish reason can be by determining for its NAS process for establishing RRC connection.

Similar to above-mentioned RRC connection request message, following message can be sent to RAN from UE 104 on SRB0 110；With TM RLC-SAP；And it is sent in the logic channel of such as CCCH etc.In some embodiments, RRC Connection request message can have ASN.1 structure as follows.

RRC connection request message

Therefore, CP data and only CP connection value as can be added establishing probable value used in reason.

In alternative solution 3, new LCID can be used for message 3.For downlink sharied signal channel (" DL-SCH "), The size of the MAC header of ink Shared Channel (" UL-SCH ") and Multicast Channel (" MCH ") is variable, and by following field groups At: LCID；L；F；F2 and E.

LCID field may include LCID value, the LCID value identify corresponding MAC SDU logic channel example or corresponding MAC Control element or the type of filling, as described in (following) Tables 1 and 2 is directed to DL-SCH and UL-SCH respectively.Unless otherwise indicated, Otherwise Tables 1 and 2 can be similar to the table 6.2.1-1 and table 6.2.1-2 of 3GPP TS 36.321v14.2.0 (2017-03).

For each MAC SDU, MAC control element or filling included in MAC PDU, may exist a LCID word Section.In addition to this, when need single byte or double byte fill but cannot filling at the end by MAC PDU to realize when, It may include one or two additional LCID field in MAC PDU.In some embodiments, if UE 104 is classification 0UE (example Such as, low cost/low-power UE), then LCID " 01011 " can be used to indicate CCCH in UE 104；If UE 104 is used CP EPS CIoT optimizes to send data, then LCID " 01100 " can be used to indicate CCCH in UE 104；And UE 104 can In addition LCID " 00000 " to be used to indicate CCCH.LCID field size can be 5 positions.

L field may include length value to indicate the length of corresponding MAC SDU or variable-size MAC control element, with word Section is unit.Other than the last one subheader portion and subheader corresponding with fixed size MAC control element portion, each MAC PDU subheader portion can have a L field.The size of L field can be indicated by F field and F2 field.

F field may include format value to indicate the size of L field.In addition to the last one subheader portion and and fixed size Except the corresponding subheader portion of MAC control element, and other than F2 is arranged to 1, each MAC PDU subheader portion can have One F field.The size of F field can be 1 position.If including F field, if MAC SDU or variable-size MAC control element Less than 128 bytes of size, then the value of F field can be set to 0；Otherwise it can be set to 1.

F2 field may include 2 value of format to indicate the size of L field.Each MAC PDU subheader portion can have a F2 Field.The size of F2 field can be 1 position.If the size of MAC SDU or variable-size MAC control element is greater than 32,767 A byte, and if corresponding subheader portion is not the last one subheader portion, the value of F2 field can be set to 1, otherwise It can be set to 0.

E field may include extension flag to indicate in MAC header with the presence or absence of more multi-field.E field can be set to " 1 " is to indicate another group of at least R/F2/E/LCID field.E field can be set to " 0 " to indicate that MAC SDU, MAC are controlled Element or be filled at next byte starts.

R field may include the reserved bit for being arranged to " 0 ".

MAC header and subheader portion can be eight bit byte alignment.

Value of the table 1- for the LCID of DL-SCH

For NB-IoT, the following LCID value for being only used for DL-SCH is applicable: CCCH, the mark of logic channel, UE contention Mark, timing advance command, discontinuous receive (" DRX ") is solved to order and fill.

Value of the table 2- for the LCID of UL-SCH

For NB-IoT, the following LCID value for being only used for UL-SCH is applicable: CCCH (LCID " 00000 "), logic channel Mark, Cell Radio Network Temporary Identity symbol (" C-RNTI "), short buffer state reports (" BSR ") and filling.

In alternative solution 4, the NAS layer 224 of UE 104 will be to the AS of UE 104 (for example, to RRC 220 of UE 104) The instruction of CP data is provided, instruction NAS message includes the data that will be sent via control plane CIoT EPS optimization.UE's 104 AS can establish RRC by message 5 including new CP data instruction IE and connect and send message 5 (for example, RRC connection It is provided with, can be used to confirm that being successfully established for RRC connection).If the S1-AP layer 228 of AN 108 is from MME 124 S1-AP layer 228 receive S1-AP overload initiation command, instruction is overloaded due to caused by control plane message, then AN 108, which can use reason-code-control plane data overload, carrys out refuse information 5, and keeps out of the way in RRC refuse information to UE offer (backoff) timer value.

In another alternative solution, above-mentioned CP data instruction has slightly different definition, and only refers to and will consolidate via CP Connect calmly (it is interpreted as SCEF PDN connection and is fixed to CP always, and SGi PDN connection may or may not be fixed) or on-fixed The data that CP in connection is sent.One possible advantage is that eNB can allow MME to determine that being switched to user puts down based on the instruction Face.

The example A SN.1 for defining the new instruction is shown below, and is set up with using RRC connection request to connect with RRC At as a reference to being referred to；However, as previously mentioned, similar field can also be determined in other message 3 or message 5 Justice.In addition, using LTE RRC information；However, it is possible to identical newer field be defined in equivalent N B-IoT message, for example, RRC Connection is provided with-NB.

RRC connection, which is provided with message, can be sent to RAN 110 from UE 104 on SRB1；With affirmation mode ("AM")RLC-SAP；And it is sent in the logic channel of such as dedicated control channel (" DCCH ") etc.In some realities It applies in example, RRC connection request message can have ASN.1 structure as follows.

RRC connection is provided with message

When UE 104 using control plane CIoT EPS optimization to send data when, may include CP data field (and It is set as "true").When UE 104 is optimized using control plane CIoT EPS optimization by being fixed to control plane CIoT EPS EPS carrying when sending data, may include only CP link field (and being set as "true").

It is noted that above-mentioned alternative solution does not have to be mutually exclusive each other.The various combinations of alternative solution can be used.Example Such as, alternative solution 3 may include LCID value, be used to indicate UE 104 whether using control plane CIoT EPS optimization pass through by EPS fixed to control plane CIoT EPS optimization carries to send data.In another example eNB can be in 3 message package of RRC information Directly refuse 3 message of RRC information when including only CP connection instruction (and overload MME).If RRC information 3 does not indicate any content, It then assume that it is not attached to CP.Then alternative solution 4 can be used, for example, RRC information 5 can indicate that it is CP data. Therefore, information is sent with two parts.

In some embodiments, UE 104 can support both control plane and user plane optimization.If UE 104 It holds EPS CIoT to optimize and there is the SGi PDN connection (for example, path 2 of Fig. 1) for being not attached to CP, then if due to control Panel data and cause congestion, then UE 104 can be switched to UP from CP.

As described in alternative solution 4, the NAS layer 224 of UE 104 can provide CP to the rrc layer 220 of UE 104 above Data instruction, to indicate that NAS message includes the data that will be sent via control plane CIoT EPS optimization.Then, UE 104 Rrc layer 220 can establish RRC connection, and can send the message 5 including CP data instruction IE (for example, RRC connection is arranged It completes).If AN 108 receives S1-AP overload initiation command from MME 124, AN 108 can use reason generation Code-control plane data is overloaded to refuse RRC information 5, and provides back off timer value to UE in RRC refuse information.Due to UE 104 also supports UP EPS CIoT to optimize (or tradition S1-U), therefore UE 104 can be by sending NAS clothes in message 5 Business requests to determine to establish the new RRC connection for being used for UP.

Alternatively, in order to save UE battery and reduce the load on AN 108 or MME 124, if SGi PDN connection is not Fixed to control plane, then some embodiments can make MME 124 handover the connection to user plane.In the message flow of Fig. 3 These embodiments are described in journey.

Fig. 3 is shown in accordance with some embodiments makes MME 124 from control due to the congestion from control plane data Plane processed is switched to the process 300 of user plane.

In order to establish RRC connection, at 304, UE 104 can send RRC information 5.RRC information 5 may include NAS control Plane service processed requests (" CPSR ") message.CPSR message can be the NAS message being integrity protected.CPSR message can wrap Include the uplink data of EPS carrying ID (" EBI ") and encryption.RRC information 5 can also include that CP data indicate, be existed with instruction User data transmission message is had sent in CPSR message.RRC information 5 can also include only CP connection, to indicate corresponding to EBI's Whether EPS carrying is fixed to control plane.

At 308, AN 108 can determine RRC information 5 whether include MME 124 control plane data, the control is flat Face data be congestion (as first before to indicated by AN 108).Then, AN 108 can determine that message 5 will be only arranged in CP connection For true or false (false).If only CP connection is arranged to very, instruction EBI is fixed only to control plane, and MME 124 have indicated that AN 108 will stop the load of CP data, then AN 108 can send RRC refuse information to UE 104, and Process can stop herein.

If only CP connection is arranged to false, as shown in Figure 3 it is assumed that if AN 108 can determine EBI not only by Fixed to control plane.Then, at 312, AN 108 can send S1-AP initial UE message to MME 124.At the beginning of S1-AP Beginning UE message may include carrying the CPSR message of EBI.

At 316, if MME 124 overload and based on make its limit the load from CP data carrier policy, Then MME 124 can check whether received EBI is fixed to control plane in S1-AP message.It is assumed that access node 108 will It may refuse only CP connection and be arranged to genuine RRC information 5, then MME 124, which is received, carries the EBI's for being fixed to control plane The chance of S1-AP initial UE message may be relatively small in overload MME.

If EBI is not attached to control plane (this is most probable situation), MME 124 can be based on carrier policy To determine to handover the connection to user plane.MME 124 can also determine to forward the data in CPSR message via S11-U.It replaces Dai Di, MME 124 can determine by respond in NAS/S1-AP message in include that new indicator notifies UE 104 to pass through user Plane retransmits data.

If not yet establishing S11-U interface between MME and S-GW/P-GW 120, and S11- is established in the decision of MME 124 U interface is with for forwarding data by control plane, then process 300 may include the message exchange at 320 and 324.Specifically, At 320, MME 124 can send modification carrying request to S-GW/P-GW 120 to modify existing carrying.Then, 324 Place, in response, S-GW/P-GW 120 can send MME 124 for modification carrying response.

In some embodiments, if the decision of MME 124 is established S1-U between UE 104 and S-GW/P-GW 120 and connect Mouthful, then the message exchange at 320 and 324 can also be used, retransmits data to connect for UE 104 by user plane.

If MME 124 determines to forward the data in CPSR by control plane via S11-U interface, at 328, MME 124 can send uplink data to S-GW/P-GW 120.

At 332, process 300 may include that the decision of MME 124 is switched to user plane.At 336, MME 124 can be with It initiates to establish DRB and S1-U interface by sending S1-AP initial context setting request (" ICSR ") message.S1-AP ICSR Message may include controlling plane back off timer (" BOT ") value and the instruction to data are retransmitted by user plane.CP BOT value can prevent UE 104 from sending other uplink data by control plane connection whithin a period of time.

Process 300 can also include, and at 340, AN 108 and UE 104 execute radio bearer establishment process to establish DRB。

At 344, AN 108 can send RRC downlink (" DL ") message.RRC downlinlc message may include control Plane back off timer processed and to retransmit data instruction.

When receiving retransmission instruction in RRC DL message, at 348, UE 104 can will be counted by user plane According to being sent to AN 108.At 352, AN 108 can also send S-GW/P-GW 120 for UL data by user plane.

Fig. 4 shows what the data in accordance with some embodiments for via the control plane being fixedly connected for CP were transmitted Overload starts the process 400 of message.

Process 400 may include determining the overload situations at MME 124 in 404, MME 124.When flat including such as control When the amount of the flow of face EPS optimization data reaches predetermined threshold, overload situations can be determined.When determining overload situations, MME 124 can initiate process to limit the data transmission via control plane CIoT EPS optimization.For limiting control plane data The standard (for example, predetermined threshold) of transmission and the process done so can strategy based on operator or configurations.

When determining overload situations, at 408, MME 124 can send S1-AP overload to AN 108 and start message.S1- It may include control plane CIoT data parameters that AP overload, which starts message, notify MME 124 to overload to AN 108.In some realities It applies in example, overload situations that are determining and signaling at 408 can indicate the close overload of MME 124 at 404, rather than Through overloading.

It can also include that only CP instruction was executed with indicating that AN 108 is fixedly connected only for CP that S1-AP overload, which starts message, Carry limitation.In the case where it does not include only CP instruction that S1-AP, which overloads in beginning message, AN 108 can be executed for all connections Overload limitation.Process 400 can also include, and at 412, RRC information 5 is sent AN 108 by UE 104.RRC information 5 can be with Including CP data indicator to indicate that RRC information 5 includes control plane data.RRC information 5 can also be indicated including only CP connection Symbol is to indicate that EPS carrying is fixed to control plane.

At 416, AN 108 may check to determine whether RRC information 5 is directed to congestion MME and whether it corresponds to It is fixedly connected in CP.Access node 108 may check to determine whether RRC information 5 includes MME mark, for example, registration MME parameter, mark are previously sent the MME that S1-AP overload starts message.For example, if RRC information 5 includes corresponding to MME 124 MME mark, then for the embodiment, access node 108 can determine that RRC information 5 is for congestion MME.

It if receiving RRC information 5 when MME 124 overloads, but does not include only CP concatenating indicator, then AN 108 can be with CP data-message is sent to MME 124.MME 124 can determine control plane being switched to user plane, such as above with reference to Fig. 3 It is shown.

At 416, if it is determined that receive RRC information 5 when MME 124 overloads and RRC information 5 includes only CP connection Indicator, then at 420, AN 108 can send RRC refuse information to UE 104.RRC refuse information may include keeping out of the way to determine When device value.UE 104 can use in RRC connection reject message received back off timer value to start back off timer.? When back off timer expires, UE 104 can send additional message to send data via control plane.

In some embodiments, access node 108 can be coupled with multiple MME.If access node 108 from first MME receives overload message, then it still is able to send CP data-message to the 2nd MME connected to it.

Fig. 5 shows example operational flow/algorithm structure of UE 104 in accordance with some embodiments.

At 504, process/structure 500 may include generating and sending CP data-message.In some embodiments, CP number It can be generated by the NAS layer 224 of UE 104 according to message, provide NAS message and the instruction of CP data to the AS of UE 104.CP data refer to Showing can indicate that NAS message includes the data that will be sent via control plane CIoT EPS optimization.Then, the AS of UE 104 can be with It generates and sends one or more RRC informations (for example, RRC information 3 or RRC information 5), carries CP number for example as described above It is indicated according to instruction or only CP connection.

At 508, process/structure 500 can also include receiving RRC information from AN 108.RRC information can be such as Fig. 3 The RRC DL message or RRC connection reject message as described in Figure 4.RRC information may include CP BOT value.In some realities It applies in example, RRC information may include retransmitting indicator, and instruction UE 104, which is retransmitted, previously to be sent out in CP data-message The data sent.

At 512, process/structure 500 can also keep out of the way including the use of CP BOT value received in RRC information to be arranged Timer.In some embodiments, it if back off timer is currently running when new CP BOT value is currently running, can incite somebody to action Back off timer resets to new CP-BOT value.It in other embodiments, can be by CP when receiving new CP BOT value BOT value is added to the remaining time on back off timer.

At 516, process/structure 500 can also include generating and sending another CP data-message.Can at 504 The CP data-message of generation analogously generates another CP data-message.It is another this can be sent after back off timer expires One CP data-message.

Fig. 6 shows example operational flow/algorithm structure 600 of AN 108 in accordance with some embodiments.

At 604, process/structure 600 may include processing CPSR message.CPSR message may include mark UE 104 The EBI of EPS carrying.In some embodiments, CPSR can be included in RRC information, for example, RRC information 3 or RRC information 5.In some embodiments, CPSR message or encapsulation RRC information can also include the MME mark corresponding to MME 124.

At 608, process/structure 600 can also include whether determining MME (for example, MME 124) indicated in CPSR Overload.AN 108 can based on previously since MME 124 receive S1-AP overload start message come determine MME 124 overload.

At 608, if it is determined that MME 124 does not overload, then at 612, process/structure 600 can also include by CPSR Message is forwarded to MME 124.In some embodiments, CPSR message can be forwarded to MME in S1-AP initial UE message 124。

At 608, if it is determined that MME 124 overloads, then at 616, process/structure 600 can also include determining data Whether will be sent by the carrying for being fixed to only CP connection.AN 108 can be by checking in the RRC information for sending CPSR message Only CP field determine whether data will be sent by the carrying for being fixed to only CP connection.

At 616, if it is determined that relevant bearer is not fixed to only CP connection, then at 612, process/structure 600 can be with Advance so that CPSR message is forwarded to MME 124.

At 616, if it is determined that relevant bearer is fixed to only CP connection, then at 620, process/structure 600 can be former Into to send RRC connection reject message.In some embodiments, RRC connection reject message may include that UE 104 can be used for Start the CP BOT value of CP back off timer.

Fig. 7 shows example operational flow/algorithm structure 700 of MME 124 in accordance with some embodiments.

At 704, process/structure 700 may include processing CPSR message.CPSR message may include mark UE 104 The EBI of EPS carrying.In some embodiments, CPSR can be included in S1-AP initial UE message.

At 708, process/structure 700 can also include the overload situations in detection network.In some embodiments, may be used By the way that the grade of certain types of flow and predetermined threshold are compared to detection overload situations.For example, in some implementations In example, the grade that CP CIoT EPS can be optimized flow by MME 124 is carried out with according to the predetermined threshold of carrier policy configuration Compare.If the flow detected is more than predetermined threshold, MME 124 can detecte overload situations.

At 708, if overload situations are not detected, at 712, process/structure 700 can advance to pass through control Plane sends data.

At 708, if detecting overload situations, at 716, process/structure 700 can advance to determine by EBI Whether the EPS carrying of mark is fixed to only CP connection.MME 124 can be by checking that the S1-AP for sending CPSR message is initial Only CP field in UE message determines whether data will be sent by being fixed to the carrying of only CP connection.

At 716, if it is determined that EPS carrying is fixed to only CP connection, then at 720, process/structure 700 can be former Into to refuse the message.It can refuse the message by sending refuse information to AN 108.As described above, such case may Infrequently occur, because if AN 108 is fixed to only CP connection and MME 124 overloads, then AN 108 may refuse RRC information.

At 716, if it is determined that EPS carrying is not fixed to only CP connection, then at 724, process/structure can advance To initiate the foundation of S1-U carrying.This may be that MME 124 determines the result that user plane is switched to from control plane.Some In embodiment, MME 124 can send S1-AP message to AN 108.S1-AP message can be the setting of S1-AP initial context Request message may include in some embodiments the CP BOT value of UE.

It is implemented in system embodiment described herein any appropriately configured hardware and/or software can be used. Fig. 8 shows the exemplary components of the electronic equipment 800 for one embodiment.In embodiment, electronic equipment 800 can be, It may be implemented, UE 104, AN 108, MME 124 or some other electronic equipments can be incorporated to, or be otherwise used as UE 104, a part of AN 108, MME 124 or some other electronic equipments.

In some embodiments, electronic equipment 800 may include the application circuit being at least coupled as shown in the figure 802, baseband circuit 804, radio frequency (" RF ") circuit 806, front-end module (" FEM ") circuit 808 and one or more antennas 810. The embodiment that electronic equipment 800 is realized in AN (for example, eNB) or MME or realized by AN (for example, eNB) or MME wherein In, electronic equipment 800 can also include the network for being communicated by wireline interface (for example, X2 interface, S1 interface etc.) Interface circuit (not shown).

As used herein, term " circuit " may refer to lower list, as a part of lower list or including under List: the specific integrated circuit (" ASIC "), electronic circuit, processor for executing one or more softwares or firmware program are (shared , it is dedicated or group) and/or memory (shared, dedicated or group), combinational logic circuit, and/or provide described in Other suitable hardware components of function.In some embodiments, circuit can be in one or more softwares or firmware module It realizes, or function associated with circuit can be realized by these softwares or firmware module.In some embodiments, circuit It may include the logic that can at least partly operate within hardware.

Application circuit 802 may include one or more application processor.For example, application circuit 802 may include circuit, Such as, but not limited to: one or more single or multiple core processor 802a.(one or more) processor 802a may include leading to With any combination of processor and application specific processor (for example, graphics processor, application processor etc.).Processor 802a can be with Computer-readable medium 802b (also known as " CRM 802b ", " memory 802b ", " storage device 802b " or " memory/deposit Storage device 802b ") it is coupled and/or may include computer-readable medium 802b, and can be configured as execution in CRM The instruction stored in 802b is so that various applications and/or operating system can be run in system.

Baseband circuit 804 may include circuit, such as, but not limited to: one or more single or multiple core processors.Base band Circuit 804 may include one or more baseband processor and/or control logic, to handle the reception signal from RF circuit 806 The received baseband signal in path, and generate the baseband signal of the transmission signal path for RF circuit 806.Baseband processing circuitry 804 can connect with 802 interfaces of application circuit, to generate and handle baseband signal and control the operation of RF circuit 806.Example Such as, in some embodiments, baseband circuit 804 may include the second generation (" 2G ") baseband processor 804a, the third generation (" 3G ") Baseband processor 804b, forth generation (" 4G ") baseband processor 804c, the 5th generation (" 5G ") baseband processor 804h, and/or use In other existing generations, in exploitation or (one or more) other Base-Band Processings in the following generation (for example, 6G etc.) that will be developed Device 804d.Baseband circuit 804 (for example, one or more of baseband processor 804a-d, h) can handle support via RF electricity The various radio control functions that road 806 is communicated with one or more radio nets.Radio control functions can wrap It includes but is not limited to: signal modulation/demodulation, coding/decoding, radio frequency displacement etc..In some embodiments, baseband circuit 804 Modulation/demodulation circuit may include Fast Fourier Transform (FFT), precoding or constellation mapping/demapping function.Some In embodiment, the coding/decoding circuit of baseband circuit 804 may include convolution, tail biting (tail-biting) convolution, turbo, Viterbi (Viterbi), and/or low-density checksum (LDPC) coder/decoder functionalities.Modulating/demodulating and encoder/ The embodiment of decoder function is not limited to these examples, and in other embodiments may include other functions appropriate.

In some embodiments, baseband circuit 804 may include the element of protocol stack, for example, E-UTRAN agreement is wanted Element, including such as PHY, MAC, RLC, PDCP and/or RRC element.Central processing unit (CPU) 804e of baseband circuit 804 can To be configured as element of the operation for the protocol stack of the signaling of PHY, MAC, RLC, PDCP and/or rrc layer.In some embodiments In, baseband circuit 804 may include one or more audio digital signal processors (DSP) 804f.(one or more) audio DSP 804f may include the element for compression/de-compression and echo cancellor, and in other embodiments may include it His processing element appropriate.Baseband circuit 804 can also include computer-readable medium 804g (also known as " CRM 804g ", " deposit Reservoir 804g ", " storage device 804g " or " storage/memory 804g ").CRM 804g can be used for loading and storing By the data and/or instruction of the operation that the processor of baseband circuit 804 executes.CRM 804g for one embodiment can wrap Include any combination of volatile memory appropriate and/or nonvolatile memory.CRM 804g may include various grades Any combination of storage/memory, the including but not limited to read-only storage with embedded software instruction (for example, firmware) Device (ROM), random access memory (for example, dynamic random access memory (DRAM)), caching, buffer etc..CRM 804g Par-ticular processor can be shared or is exclusively used between various processors.In some embodiments, the component of baseband circuit 804 can To be combined as suitable in one single chip or one single chip group, or it is arranged on same circuit board.In some embodiments, Some or all of baseband circuit 804 and application circuit 802 form component can be for example on system on chip (SOC) by real together It is existing.

In some embodiments, baseband circuit 804 can provide the communication compatible with one or more radio technologies.Example Such as, in some embodiments, baseband circuit 804 can be supported and E-UTRAN and/or other wireless MANs (" WMAN "), nothing The communication of line local area network (" WLAN "), wireless personal area network (" WPAN ").Wherein baseband circuit 804 is configured as supporting multiple wireless The embodiment of the radio communication of agreement can be referred to as multimode baseband circuit.

RF circuit 806 can be supported to be led to using modulated electromagnetic radiation with wireless network by non-solid medium Letter.In various embodiments, RF circuit 806 may include that switch, filter, amplifier etc. are logical with wireless network to assist Letter.RF circuit 806 may include receiving signal path, which may include receiving to from FEM circuit 808 RF signal carries out down coversion and baseband signal is supplied to the circuit of baseband circuit 804.RF circuit 806 can also include sending letter Number path, the transmission signal road may include carrying out up-conversion to baseband signal provided by baseband circuit 804, and RF is exported Signal is supplied to FEM circuit 808 with the circuit being used for transmission.

In some embodiments, RF circuit 806 may include receiving signal path and transmission signal path.RF circuit 806 Reception signal path may include mixer 806a, amplifier circuit 806b and filter circuit 806c.RF circuit 806 transmission signal path may include filter circuit 806c and mixer 806a.RF circuit 806 can also include closing Generator circuit 806d, the condensating synthesizering circuit are used to synthesize for receiving signal path and sending the mixer 806a of signal path The frequency used.In some embodiments, the mixer 806a for receiving signal path can be configured as based on by synthesizing Frequency synthesis provided by device circuit 806d is come to the RF signal progress down coversion received from FEM circuit 808.Amplifier circuit 806b can be configured as amplification downconverted signal and filter circuit 806c and can be configured as from downconverted Signal remove undesired signal with generate output baseband signal low-pass filter (LPF) or bandpass filter (BPF).It is defeated Baseband signal is provided to baseband circuit 804 for further processing out.In some embodiments, output baseband signal can be with It is zero frequency baseband signal, but this is not required.In some embodiments, the mixer 806a for receiving signal path can To include passive frequency mixer, but the range of embodiment is not limited in this respect.

In some embodiments, the mixer 806a for sending signal path can be configured as based on condensating synthesizering circuit Frequency synthesis provided by 806d carries out up-conversion to input baseband signal, to generate the RF output letter for FEM circuit 808 Number.Baseband signal can be provided by baseband circuit 804, and can be filtered by filter circuit 806c.Filter circuit 806c It may include low-pass filter (LPF), but the range of embodiment is not limited in this respect.

In some embodiments, it receives the mixer 806a of signal path and sends the mixer of signal path 806a may include two or more frequency mixers, and can be arranged to be respectively used to quadrature frequency conversion and/or up-conversion. In some embodiments, the mixer 806A for receiving signal path and the mixer 806A for sending signal path can be with Including two or more frequency mixers, and image can be arranged to and inhibit (for example, Hartley image inhibits).One In a little embodiments, the mixer 806a for receiving signal path and the mixer 806a for sending signal path can be by cloth It is set to and is respectively used to Direct-conversion and/or Direct conversion.In some embodiments, the mixer of signal path is received 806a and the mixer 806a for sending signal path can be configured for superheterodyne operation.

In some embodiments, output baseband signal and input baseband signal can be analog baseband signal, but embodiment Range be not limited in this respect.In some alternative embodiments, output baseband signal and input baseband signal can be number Word baseband signal.In these alternate embodiments, RF circuit 806 may include analog-digital converter (ADC) and digital analog converter (DAC) circuit, and baseband circuit 804 may include digital baseband interface to be communicated with RF circuit 806.

In some bimodulus embodiments, individual radio IC circuit can be provided to handle the signal of each frequency spectrum, but It is that the range of embodiment is not limited in this respect.

In some embodiments, condensating synthesizering circuit 806d can be fractional N synthesizer or score N/N+1 synthesizer, still The range of embodiment is not limited in this respect, because other kinds of frequency synthesizer may be suitable.For example, synthesizer Circuit 806d can be delta-sigma synthesizer, frequency multiplier or the synthesizer including having the phaselocked loop of frequency divider.Condensating synthesizering circuit 806d can be configured as based on frequency input and frequency divider control input and synthesize the mixer 806a for RF circuit 806 The output frequency used.In some embodiments, condensating synthesizering circuit 806d can be score N/N+1 synthesizer.

In some embodiments, frequency input can be provided by voltage controlled oscillator (VCO), but this is not required.It can be with Frequency divider control input is provided according to required output frequency by baseband circuit 804 or application circuit 802.In some embodiments In, frequency divider control input (for example, N) can be determined from look-up table based on channel indicated by application circuit 802.

The condensating synthesizering circuit 806d of RF circuit 806 may include frequency divider, delay lock loop (DLL), multiplexer, Yi Jixiang Bit accumulator.In some embodiments, frequency divider can be dual-mode frequency divider (DMD), and phase accumulator can be number Phase accumulator (DPA).In some embodiments, DMD can be configured to by input signal divided by N or N+1 (for example, based on into Position output) to provide score division ratio.In some example embodiments, DLL may include one group of cascade tunable delay Element, phase detectors, charge pump and D flip-flop.In these embodiments, delay element can be configured as VCO Period at most resolves into Nd equal phase groupings, wherein Nd is the number of the delay element in delay line.With this side Formula, it is a VCO period that DLL, which provides negative-feedback to assist in ensuring that the total delay by delay line,.

In some embodiments, condensating synthesizering circuit 806d can be configured as the carrier frequency generated as output frequency, And in other embodiments, output frequency can be the multiple of carrier frequency (for example, twice of carrier frequency, carrier frequency Four times) and be used together with orthogonal generator with divider circuit, there are multiple phases different from each other to generate in carrier frequency Multiple signals of position.In some embodiments, output frequency can be LO frequency (fLO).In some embodiments, RF circuit 806 may include IQ/ polarity switch.

FEM circuit 808 may include receiving signal path, which may include being configured as operation from one Signal that RF signal that a or mutiple antennas 810 receives, amplification receive simultaneously proposes the amplified version of received signal Supply the circuit of RF circuit 806 for further processing.FEM circuit 808 can also include sending signal path, the transmission signal Path may include being configured as amplifying the signal being used for transmission provided by RF circuit 806 by one or more antennas 810 In one or more antenna transmissions circuit.In some embodiments, FEM circuit 808 may include TX/RX switch, with Switch between sending mode and reception pattern operation.FEM circuit 808 may include receiving signal path and transmission signal path. The reception signal path of FEM circuit may include low-noise amplifier (LNA) to amplify the RF signal received, and provide warp The RF signal of amplification received is as (for example, to RF circuit 806) output.The transmission signal path of FEM circuit 808 can be with It is used for including the power amplifier (PA) for amplifying input rf signal (for example, being provided by RF circuit 806) and for generating One or more filters of the RF signal of subsequent transmission (for example, passing through one or more antennas in one or more antennas 810) Wave device.

In some embodiments, electronic equipment 800 may include add ons, for example, display, camera, one or more A sensor, and/or interface circuit (for example, input/output (I/O) interface or bus) (not shown).Electronic equipment wherein In the enb or in the embodiment by eNB realization, electronic equipment 800 may include network interface circuit.Network interface circuit can be with It is one or more computer hardware components, electronic equipment 800 is connected to one or more network elements via wired connection Part, for example, one or more servers in core network or one or more other eNB.For this purpose, network interface circuit can be with Including one or more application specific processors and/or field programmable gate array (FPGA) to use one or more network communications to assist View communicated, for example, X2 application protocol (AP), S1AP, Flow Control Transmission Protocol (SCTP), Ethernet, point-to-point (PPP), Fiber Distributed Data Interface (FDDI), and/or any other network communication protocol appropriate.

In some embodiments, electronic equipment 800 can be configured as execution as described herein one or more processes, Technology, and/or method, or part thereof.For example, electronic equipment 800 may be implemented above for stream shown or described by Fig. 3-7 Journey/structure.

Fig. 9 be show according to some example embodiments can from machine readable or computer-readable medium (for example, it is non-temporarily State machine readable storage medium) read the block diagram for instructing and executing the component for any one or more methods being discussed herein.Tool Body, Fig. 9 shows the graphical representation of hardware resource 900, including one or more processors (or processor core) 910, one Or multiple memory/storage facilities 920 and one or more communication resource 930, each single item in these can be via total Line 940 is communicatively coupled.For the embodiment using node virtual (for example, network function virtualization (" NFV ")), can hold Row management program 902 is to provide the performing environment for one or more network slice/sub- slices, to utilize hardware resource 900.

Processor 910 is (for example, CPU, reduced instruction set computing (" RISC ") processor, complex instruction set calculation (" CISC ") processor, graphics processing unit (" GPU "), digital signal processor (" DSP ") (such as baseband processor, dedicated collection At circuit (" ASIC "), RF IC (" RFIC "), another processor or its any combination appropriate)) it may include example Such as processor 912 and processor 914.

Memory/storage facilities 920 may include main memory, disk storage device or its any combination appropriate.It deposits Reservoir/storage facilities 920 can include but is not limited to any kind of volatibility or nonvolatile memory, for example, dynamic with Machine accesses memory (" DRAM "), static random access memory (" SRAM "), Erasable Programmable Read Only Memory EPROM (" EPROM "), electrically erasable programmable read-only memory (" EEPROM "), flash memory, solid-state storage device etc..

The communication resource 930 may include interconnection or network interface components or other equipment appropriate, with via network 908 with One or more peripheral equipments 904 or one or more databases 906 are communicated.For example, the communication resource 930 may include having Line communication component (for example, for being coupled via universal serial bus (" USB ")), cellular communication component, near-field communication (" NFC ") component,Component (for example,Low-power consumption),Component and other communication components.

Instruction 950 may include software, program, using, small application, app or other executable codes, be used for so that processing In device 910 at least any one execute any one or more of method discussed in this article.

It is integrated into the embodiment in UE 104 in wherein hardware resource 900, instruction 950 can make processor 910 Execute operating process/algorithm structure 500 or other operations of such as UE described in the process of Fig. 3-4.

It is integrated into the embodiment in AN 108 in wherein hardware resource 900, instruction 950 can make processor 910 Execute operating process/algorithm structure 600 or other operations of such as AN described in the process of Fig. 3-4.

It is integrated into the embodiment in MME 124 in wherein hardware resource 900, instruction 950 can make processor 910 Execute operating process/algorithm structure 700 or other operations of such as MME described in the process of Fig. 3-4.

Instruction 950 can completely or partially reside at least one of processor 910 (for example, processor is slow Deposit in memory), in memory/storage facilities 920 or its any combination appropriate.In addition, any part of instruction 950 can To be transmitted to hardware resource 900 from any combination of peripheral equipment 904 or database 906.Therefore, processor 910, memory/ The memory of storage facilities 920, peripheral equipment 904 and database 906 is computer-readable and machine readable media example.

Resource described in Fig. 9 is referred to as circuit.For example, the communication resource 930 is referred to as telecommunication circuit 930.

Some non-limiting examples presented below.

Example 1 includes one or more computer-readable mediums with instruction, and described instruction makes to move when executed Mobility management entity (" MME "): processing carries the control plane service request of evolution packet service load identification (" EBI ") (" CPSR ") message, evolution packet service (" EPS ") of the evolution packet service load identification for identity user equipment carry； Detect the overload situations in network；Determine that EPS carrying is not fixed to only control plane (CP) connection；And based on to overload feelings The detection of condition simultaneously determines that EPS carrying is not fixed to only CP connection, and the S1-U for initiating foundation for user equipment is carried.

Example 2 includes example 1 or some other exemplary one or more computer-readable mediums of this paper, wherein institute It states instruction and also makes MME when executed: being connect by the user plane with gateway come forwarding uplink data.

Example 3 includes example 1 or some other exemplary one or more computer-readable mediums of this paper, wherein institute It states instruction and also makes MME when executed: keeping out of the way timing to user equipment (" UE ") transmission in Non-Access Stratum (" NAS ") message Device value, to prevent UE from sending other uplink data by control plane connection.

Example 4 includes example 3 or some other exemplary one or more computer-readable mediums of this paper, wherein institute It states instruction and also makes MME when executed: sending to keep out of the way in S1- access point (" AP ") initial context setting request message and determine When device value.

Example 5 includes example 4 or some other exemplary one or more computer-readable mediums of this paper, wherein institute It states instruction and also makes MME when executed: sending instruction in S1-AP initial context setting request message, which is used for Indicate that UE connects the data for retransmitting CPSR message by user plane.

Example 6 includes some other exemplary one or more computers of any one of example 1-5 or this paper can It reads medium, wherein described instruction also makes MME when executed: modification carrying request is sent to service/packet gateway, with needle Existing carrying is modified the transmission from the uplink data of user equipment；And modification is received from service/packet gateway Carrying response.

Example 7 includes example 6 or some other exemplary one or more computer-readable mediums of this paper, wherein is repaired Change carrying request and existing carrying, and described instruction are modified by the uplink data transmission of S11-U interface for being directed to Also make MME being performed: uplink data is sent by S11-U interface.

Example 8 includes example 6 or some other exemplary one or more computer-readable mediums of this paper, wherein is repaired Change carrying request and existing carrying is modified by the uplink data transmission of S1-U interface for being directed to, and described instruction exists It is performed and also makes MME: sending message to indicate user equipment and uplink data is sent by S1-U interface.

Example 9 includes some other exemplary one or more computers of any one of example 1-8 or this paper can It reads medium, wherein described instruction also makes MME when executed: will include control plane evolved packet system (" EPS ") optimization The amount of the flow of data is compared with predetermined threshold；Detect overload situations；And based on the detection to overload situations to Access node sends S1-AP overload and starts message.

Example 10 includes one or more computer-readable mediums with instruction, and described instruction makes to drill when executed Into type node B (" eNB "): receiving first message from user equipment (" UE "), which includes will be via mobile management The data that entity (" MME ") is sent by control plane connection；Determine whether MME overloads；Based on first message, determine that data are It is no to be sent by the carrying for being fixed to only control plane connection；If it is determined that data will be by being fixed to holding for only control plane connection It carries and sends, then first message is forwarded to MME；And if it is determined that data will be by being not attached to the carrying that only control plane connects It sends, then sends radio resource control (" RRC ") connection refused message to UE.

Example 11 includes example 10 or some other exemplary one or more computer-readable mediums of this paper, wherein Described instruction also makes eNB when executed: determining that data will be sent by the carrying for being fixed to only control plane connection；And to UE sends the RRC connection reject message of carrying back off timer value, to prevent UE from sending in addition upper by control plane connection Uplink data.

Example 12 includes example 10 or some other exemplary one or more computer-readable mediums of this paper, wherein Described instruction also makes eNB when executed: determining that data will be sent by the carrying for being not fixed to only control plane connection；And And first message is forwarded in S1-AP initial UE message.

Example 13 includes example 12 or some other exemplary one or more computer-readable mediums of this paper, wherein Described instruction also makes eNB when executed: reception S1-AP initial context setting request (" ICSR ") message, at the beginning of the S1-AP Beginning context setting request message includes that the instruction for retransmitting data will be connected by user plane about UE；And it is sent out to UE Send the RRC download message with the instruction.

Example 14 includes example 13 or some other exemplary one or more computer-readable mediums of this paper, wherein S1-AP ICSR message and RRC download message further include back off timer value, to prevent UE from sending it by control plane connection His uplink data.

Some other exemplary one or more computer-readable mediums of the example 15 including example 13 or 14 or this paper, In, described instruction also makes eNB when executed: receiving second message from UE, which includes that will pass through user plane Connect the data sent.

Example 16 includes one or more computer-readable mediums with instruction, and described instruction makes to use when executed Family equipment (" UE "): the first control plane (" CP ") data-message is generated and sent to send data by control plane connection； Receive radio resource control (" the RRC ") message with back off timer value；It is fixed to be kept out of the way based on back off timer value setting CP When device；And the 2nd CP data-message is generated and sent when CP back off timer expires.

Example 17 includes example 16 or some other exemplary one or more computer-readable mediums of this paper, wherein First CP data-message includes RRC information.

Example 18 includes example 17 or some other exemplary one or more computer-readable mediums of this paper, wherein RRC information is that RRC connection request message or RRC connection are provided with message.

Example 19 includes example 16 or some other exemplary one or more computer-readable mediums of this paper, wherein First CP data-message includes control plane service request message.

Example 20 includes some other exemplary one or more computers of any one of example 16-18 or this paper Readable medium, wherein the first CP data-message include CP data indicator with indicate the first CP data-message for establish be used for Via the connection of control planar transmission data, or including only CP concatenating indicator to indicate for foundation to be used for via control plane The connection of transmission data is fixed to control plane.

Example 21 includes a kind of processing circuit that will be realized in mobility management entity (" MME "), the processing circuit quilt Be configured to obtain MME: the control plane service request (" CPSR ") that processing carries evolution packet service load identification (" EBI ") disappears Breath, evolution packet service (" EPS ") of the evolution packet service load identification for identity user equipment carry；It detects in network Overload situations；Determine that EPS carrying is not fixed to only control plane (CP) connection；And simultaneously based on the detection to overload situations It determines that EPS carrying is not fixed to only CP connection, initiates to establish the S1-U carrying for user equipment.

Example 22 includes example 21 or some other exemplary processing circuits of this paper, wherein described instruction is being performed When also make MME: connect by the user plane with gateway come forwarding uplink data.

Example 23 includes example 21 or some other exemplary processing circuits of this paper, wherein described instruction is being performed When also make MME: back off timer value is sent to user equipment (" UE ") in Non-Access Stratum (" NAS ") message, to prevent UE Other uplink data is sent by control plane connection.

Example 24 includes example 23 or some other exemplary processing circuits of this paper, wherein processing circuit is also configured To make MME: sending back off timer value in S1- access point (" AP ") initial context setting request message.

Example 25 includes example 24 or some other exemplary processing circuits of this paper, wherein processing circuit is also configured To make MME: sending instruction in S1-AP initial context setting request message, it is flat by user which is used to indicate UE Face connection retransmits the data of CPSR message.

Example 26 includes some other exemplary processing circuits of any one of example 21-25 or this paper, wherein place Reason circuit is further configured such that MME: modification carrying request is sent to service/packet gateway, for from user equipment The transmission of uplink data and modify existing carrying；And modification carrying response is received from service/packet gateway.

Example 27 includes example 26 or some other exemplary processing circuits of this paper, wherein modification carrying request is used for Existing carrying is modified for the uplink data transmission by S11-U interface, and processing circuit is further configured such that MME: uplink data is sent by S11-U interface.

Example 28 includes example 26 or 27 or some other exemplary processing circuits of this paper, wherein modification carrying request Existing carrying is modified by the uplink data transmission of S1-U interface for being directed to, and processing circuit is additionally configured to make It obtains MME: sending message to indicate user equipment and uplink data is sent by S1-U interface.

Example 29 includes some other exemplary processing circuits of any one of example 21-28 or this paper, wherein place It manages circuit to be additionally configured to make MME: by the amount including the flow of control plane evolved packet system (" EPS ") optimization data and in advance Determine threshold value to be compared；Detect overload situations；And S1-AP mistake is sent to access node based on the detection to overload situations It carries and starts message.

Example 30 includes a kind of processing circuit that will be realized in evolved node B (" eNB "), and processing circuit is configured as So that eNB: processing comes from the first message of user equipment (" UE "), which includes will be via mobility management entity The data that (" MME ") is sent by control plane connection；Determine whether MME overloads；Based on first message, determine that data whether will Carrying by being fixed to only control plane connection is sent；If it is determined that data will be sent out by the carrying for being fixed to only control plane connection It send, then first message is forwarded to MME；And if it is determined that data will be sent out by the carrying for being not attached to only control plane connection It send, then sends radio resource control (" RRC ") connection refused message to UE.

Example 31 includes example 30 or some other exemplary processing circuits of this paper, wherein processing circuit is also configured To make eNB: determining that data will be sent by the carrying for being fixed to only control plane connection；And it sends to carry to UE and keeps out of the way timing The RRC connection reject message of device value, to prevent UE from sending other uplink datas by control plane connection.

Example 32 includes example 30 or some other exemplary processing circuits of this paper, wherein processing circuit is also configured To make eNB: determining that data will be sent by the carrying for being not fixed to only control plane connection；And disappear in S1-AP initial UE First message is forwarded in breath.

Example 33 includes example 32 or some other exemplary processing circuits of this paper, wherein processing circuit is also configured To make eNB: receiving S1-AP initial context setting request (" ICSR ") message, S1-AP initial context setting request disappears Breath includes that the instruction for retransmitting data will be connected by user plane about UE；And the RRC for carrying the instruction is sent to UE Download message.

Example 34 includes some other exemplary processing circuits of example 33 or this paper, wherein S1-AP ICSR message and RRC download message further includes back off timer value, to prevent UE from sending other uplink datas by control plane connection.

Example 35 includes some other exemplary processing circuits of example 33 or 34 or this paper, wherein processing circuit also by It is configured so that eNB: receives second message from UE, which includes that will connect the data sent by user plane.

Example 36 includes the processing circuit that will be realized in user equipment (" UE "), which is configured such that UE: the first control plane (" CP ") data-message is generated and sent to send data by control plane connection；It receives to have and move back Keep away radio resource control (" RRC ") message of timer value；Based on back off timer value, CP back off timer is set；And CP back off timer generates and sends the 2nd CP data-message when expiring.

Example 37 includes example 36 or some other exemplary processing circuits of this paper, wherein the first CP data-message packet Include RRC information.

Example 38 includes example 37 or some other exemplary processing circuits of this paper, wherein RRC information is RRC connection Request message or RRC connection are provided with message.

Example 39 includes some other exemplary processing circuits of any one of example 36-38 or this paper, wherein the One CP data-message includes control plane service request message.

Example 40 includes some other exemplary processing circuits of any one of example 36-39 or this paper, wherein the One CP data-message include CP data indicator with indicate the first CP data-message for establish for via controlling planar transmission The connection of data, or including only CP concatenating indicator to indicate that the connection quilt being used for via control planar transmission data will be established Fixed to control plane.

Example 41 includes the operating method executed by mobility management entity (" MME "), is drilled this method comprises: processing carries Control plane service into packet service load identification (" EBI ") requests (" CPSR ") message, evolution packet service carrying mark Know and is carried for the evolution packet service (" EPS ") of identity user equipment；Detect the overload situations in network；Determine that EPS is carried Corresponding to being not configured to only control the PDN connection of plane (CP)；And based on the detection to overload situations and determine EPS carrying Corresponding to the PDN connection for being not configured to only CP, initiate to establish the S1-U carrying for user equipment.

Example 42 includes some other exemplary methods of example 41 or this paper, wherein this method further include: by with net The user plane connection of pass carrys out forwarding uplink data.

Example 43 includes example 41 or some other exemplary methods of this paper, wherein this method further include: non-access Back off timer value is sent to user equipment (" UE ") in layer (" NAS ") message, to prevent UE from sending by control plane connection Other uplink data.

Example 44 includes example 43 or some other exemplary methods of this paper, wherein this method further include: connect in S1- Access point (" AP ") initial context, which is arranged in request message, sends back off timer value.

Example 45 includes example 44 or some other exemplary methods of this paper, wherein this method further include: in S1-AP Initial context, which is arranged in request message, sends instruction, which is used to indicate UE and connects retransmission CPSR by user plane The data of message.

Example 46 includes some other exemplary methods of any example or this paper in example 41-45, wherein this method is also It include: to send modification carrying request to service/packet gateway, with the transmission for the uplink data from user equipment Modify existing carrying；And modification carrying response is received from service/packet gateway.

Example 47 includes example 46 or some other exemplary methods of this paper, wherein modification carrying request is for being directed to Existing carrying, and this method are modified by the uplink data transmission of S11-U interface further include: cross S11-U interface hair Serve uplink data.

Example 48 includes example 46 or some other exemplary methods of this paper, wherein modification carrying request is for being directed to Existing carrying, and this method are modified by the uplink data transmission of S1-U interface further include: send message to indicate User equipment by S1-U interface sends uplink data.

Example 49 includes some other exemplary methods of any example or this paper in example 41-48, wherein this method is also It include: to be compared the amount of the flow including control plane evolved packet system (" EPS ") optimization data with predetermined threshold；Inspection Survey overload situations；And S1-AP overload is sent to access node based on the detection to overload situations and starts message.

Example 50 includes the method executed by evolved node B (" eNB "), this method comprises: from user equipment (" UE ") First message is received, which includes that will send via mobility management entity (" MME ") by control plane connection Data；Determine whether MME overloads；Determine whether data will be sent out by the carrying for being fixed to only control plane connection based on first message It send；If it is determined that data will be sent by the carrying for being fixed to only control plane connection, then first message is forwarded to MME；And If it is determined that data will be sent by the carrying for being not attached to only control plane connection, then radio resource control is sent to UE (" RRC ") connection refused message.

Example 51 includes example 50 or some other exemplary methods of this paper, wherein this method further include: determine data It will be sent by the carrying for being fixed to only control plane connection；And the RRC connection refusal for carrying back off timer value is sent to UE Message, to prevent UE from sending other uplink datas by control plane connection.

Example 52 includes example 50 or some other exemplary methods of this paper, wherein this method further include: determine data It will be sent by the carrying for being not fixed to only control plane connection；And first message is forwarded in S1-AP initial UE message.

Example 53 includes example 52 or some other exemplary methods of this paper, wherein this method further include: receive S1- AP initial context setting request (" ICSR ") message, it includes that will lead to about UE which, which is arranged request message, Cross the instruction that user plane connection retransmits data；And the RRC download message with the instruction is sent to UE.

Example 54 includes example 53 or some other exemplary methods of this paper, wherein under S1-AP ICSR message and RRC Carrying message further includes back off timer value, to prevent UE from sending other uplink datas by control plane connection.

Example 55 includes example 53 or 54 or some other exemplary methods of this paper, wherein this method further include: from UE Second message is received, which includes that will connect the data sent by user plane.

Example 56 includes the method executed by user equipment (" UE "), this method comprises: it is flat to generate and send the first control Face (" CP ") data-message is to send data by control plane connection；Receive the radio resource control with back off timer value Make (" RRC ") message；Based on back off timer value, CP back off timer is set；And it is generated simultaneously when CP back off timer expires Send the 2nd CP data-message.

Example 57 includes example 56 or some other exemplary methods of this paper, wherein the first CP data-message includes RRC Message.

Example 58 includes example 57 or some other exemplary methods of this paper, wherein RRC information is RRC connection request Message or RRC connection are provided with message.

Example 59 includes example 56 or some other exemplary methods of this paper, wherein the first CP data-message includes control Plane service request message processed.

Example 60 includes some other exemplary methods of any one of example 56-58 or this paper, wherein the first CP Data-message include CP data indicator with indicate the first CP data-message for establish for via controlling planar transmission data Connection, or including only CP concatenating indicator with indicate by establish be used for via control planar transmission data connection be fixed To control plane.

Example 61 includes a kind of device, comprising: the dress of any one of method for executing example 41-60 method It sets.

Example 62 includes a kind of mobility management entity, comprising: any one of method for executing example 41-49 method Processing circuit；And the telecommunication circuit being coupled with processing circuit, it is used for user equipment (" UE ") or evolved node B (" eNB ") sends message or receives message from UE or eNB.

Example 63 includes a kind of evolved node B (eNB), comprising: any one of method for executing example 50-55 side The processing circuit of method；And the telecommunication circuit being coupled with processing circuit, it is used for mobility management entity (" MME ") or user Equipment (" UE ") sends message or receives message from eNB or UE.

Example 64 includes a kind of user equipment (" UE "), comprising: any one of method for executing example 56-60 method Processing circuit；And the telecommunication circuit being coupled with processing circuit, it is used for evolved node B (" eNB ") or mobility pipe Entity (" MME ") is managed to send message or receive message from eNB or MME.

Example 65 includes a kind of radio resource control (" RRC ") message, comprising: control plane (CP) data field, With the first indicator, it is used to indicate whether user equipment is used control planar honeycomb Internet of Things evolved packet system (CIoT EPS) optimization sends data；Or only CP link field, there is the second indicator, whether be used to indicate user equipment The evolved packet system carrying that control plane CIoT EPS optimization controls plane CIoT EPS optimization by being fixed to is used To send data.

Example 66 includes the RRC information of example 65, wherein RRC information is RRC connection request message or RRC connection setting Complete message.

The description of the shown implementation of this paper, including content described in abstract, it is not intended that be exhaustion or general The disclosure is limited to disclosed precise forms.Although specific implementation is described herein for illustrative purpose and shows Example, but as those skilled in the relevant art will be recognized, it without departing from the scope of the disclosure, can be more than It is described in detail to calculate various substitutions or equivalent embodiment or implementation to realize identical purpose.

Example 67 includes a kind of processing circuit that will be realized in mobility management entity (" MME "), the processing circuit quilt Be configured so that MME: the control plane service request (" CPSR ") that processing carries evolution packet service load identification (" EBI ") disappears Breath, evolution packet service (" EPS ") of the evolution packet service load identification for identity user equipment carry；It detects in network Overload situations；And back off timer value is sent to user equipment (" UE ") in Non-Access Stratum (" NAS ") message, to prevent UE sends other uplink data by control plane connection.

Example 68 may include example 67 or some other exemplary processing circuits, wherein described instruction is when executed Also make MME: being connect by the user plane with gateway come forwarding uplink data.

Example 69 may include example 67 or some other exemplary processing circuits, wherein described instruction is when executed Also make MME: determining that EPS carrying corresponds to the PDN connection for being not configured to only control plane (CP)；And based on to overload feelings The detection of condition simultaneously determines that EPS carrying corresponds to the PDN connection for being not configured to only CP, initiates to establish the S1-U for being used for user equipment Carrying.

Example 70 may include the processing circuit of example 67, wherein processing circuit is further configured such that MME: connect in S1- Access point (" AP ") initial context, which is arranged in request message, sends back off timer value.

Example 71 may include the processing circuit of example 70, wherein processing circuit is further configured such that MME: in S1-AP Initial context, which is arranged in request message, sends instruction, which is connected by user plane for UE and retransmit CPSR message Data.

Claims (25)

1. having one or more computer-readable mediums of instruction, described instruction makes mobility management entity when executed (" MME "):

The control plane service that processing carries evolution packet service load identification (" EBI ") requests (" CPSR ") message, described to drill Evolution packet service (" EPS ") into packet service load identification for identity user equipment carries；

Detect the overload situations in network；

Determine that the EPS carrying is not fixed to only control plane (CP) connection；And

It based on the detection to the overload situations and determines that the EPS carrying is not fixed to the only CP connection, initiates to establish S1-U for the user equipment is carried.

2. one or more computer-readable medium according to claim 1, wherein described instruction also makes when executed Obtain the MME:

It is connect by the user plane with gateway come forwarding uplink data.

3. one or more computer-readable medium according to claim 1, wherein described instruction also makes when executed Obtain the MME:

Back off timer value is sent to user equipment (" UE ") in Non-Access Stratum (" NAS ") message, to prevent the UE from passing through It controls plane connection and sends other uplink data.

4. one or more computer-readable medium according to claim 3, wherein described instruction also makes when executed Obtain the MME:

The back off timer value is sent in S1- access point (" AP ") initial context setting request message.

5. one or more computer-readable medium according to claim 4, wherein described instruction also makes when executed Obtain the MME:

Instruction is sent in S1-AP initial context setting request message, the instruction is used to indicate the UE and passes through use Plane connection in family retransmits the data of the CPSR message.

6. one or more computer-readable medium according to any one of claims 1-5, wherein described instruction is in quilt Also make the MME when execution:

Modification carrying request is sent to service/packet gateway, to be directed to the biography of the uplink data from the user equipment It is defeated and modify existing carrying；And

Modification carrying response is received from the service/packet gateway.

7. one or more computer-readable medium according to claim 6, wherein the modification carrying request is used for needle Existing carrying modified to the uplink data transmission by S11-U interface, and described instruction also makes institute being performed State MME:

The uplink data is sent by the S11-U interface.

8. one or more computer-readable medium according to claim 6, wherein the modification carrying request is used for needle Existing carrying modified to the uplink data transmission by S1-U interface, and described instruction be performed also make it is described MME:

Message is sent to indicate that the user equipment sends the uplink data by the S1-U interface.

9. one or more computer-readable medium according to any one of claims 1-5, wherein described instruction is in quilt Also make the MME when execution:

The amount of flow including control plane evolved packet system (" EPS ") optimization data is compared with predetermined threshold；

Detect the overload situations；And

S1-AP overload, which is sent, to access node based on the detection to the overload situations starts message.

10. a kind of processing circuit that will be realized in evolved node B (" eNB "), the processing circuit are configured such that institute State eNB:

Processing comes from the first message of user equipment (" UE "), and the first message includes will be via mobility management entity The data that (" MME ") is sent by control plane connection；

Determine whether the MME overloads；

Based on the first message, determine whether the data will be sent by the carrying for being fixed to only control plane connection；

If it is determined that the data will be sent by the carrying for being fixed to only control plane connection, then the first message is forwarded to The MME；And

If it is determined that the data will be sent by the carrying for being not attached to only control plane connection, then radio is sent to the UE Resources control (" RRC ") connection refused message.

11. processing circuit according to claim 10, wherein the processing circuit is further configured such that the eNB:

Determine that the data will be sent by the carrying for being fixed to the only control plane connection；And

The RRC connection reject message for carrying back off timer value is sent, to the UE to prevent the UE from passing through the control Plane connection processed sends other uplink data.

12. processing circuit according to claim 10, wherein the processing circuit is further configured such that the eNB:

Determine that the data will be sent by the carrying for being not fixed to the only control plane connection；And

The first message is forwarded in S1-AP initial UE message.

13. processing circuit according to claim 12, wherein the processing circuit is further configured such that the eNB:

S1-AP initial context setting request (" ICSR ") message is received, request message packet is arranged in the S1-AP initial context The instruction for retransmitting data will be connected about the UE by user plane by including；And

The RRC download message with the instruction is sent to the UE.

14. processing circuit according to claim 13, wherein the S1-AP ICSR message and the RRC download message It further include back off timer value, to prevent the UE from sending other uplink data by the control plane connection.

15. processing circuit described in 3 or 14 according to claim 1, wherein the processing circuit is further configured such that described ENB:

Second message is received from the UE, the second message includes that will connect the data sent by user plane.

16. having one or more computer-readable mediums of instruction, described instruction makes user equipment when executed (" UE "):

The first control plane (" CP ") data-message is generated and sent to send data by control plane connection；

Receive radio resource control (" the RRC ") message with back off timer value；

Based on the back off timer value, CP back off timer is set；And

The 2nd CP data-message is generated and sent when the CP back off timer expires.

17. one or more computer-readable medium according to claim 16, wherein the first CP data-message packet Include RRC information.

18. one or more computer-readable medium according to claim 17, wherein the RRC information is RRC connection Request message or RRC connection are provided with message.

19. one or more computer-readable medium according to claim 16, wherein the first CP data-message packet Include control plane service request message.

20. one or more computer-readable mediums described in any one of 6-18 according to claim 1, wherein described first CP data-message include CP data indicator with indicate the first CP data-message for establish for via control plane biography The connection of transmission of data, or be used for indicating to establish via the control planar transmission data including only CP concatenating indicator Connection is fixed to the control plane.

21. a kind of processing circuit that will be realized in mobility management entity (" MME "), the processing circuit are configured such that The MME:

The control plane service that processing carries evolution packet service load identification (" EBI ") requests (" CPSR ") message, described to drill Evolution packet service (" EPS ") into packet service load identification for identity user equipment carries；

Detect the overload situations in network；And

Back off timer value is sent to user equipment (" UE ") in Non-Access Stratum (" NAS ") message, to prevent the UE from passing through It controls plane connection and sends other uplink data.

22. processing circuit according to claim 21, wherein described instruction also makes the MME when executed:

It is connect by the user plane with gateway come forwarding uplink data.

23. processing circuit according to claim 21, wherein described instruction also makes the MME when executed:

Determine that the EPS carrying corresponds to the PDN connection for being not configured to only control plane (CP)；And

Based on the detection to the overload situations and determine that the EPS carrying connects corresponding to the PDN for being not configured to only CP It connects, initiates to establish the S1-U carrying for the user equipment.

24. processing circuit according to claim 21, wherein the processing circuit is further configured such that the MME:

The back off timer value is sent in S1- access point (" AP ") initial context setting request message.

25. processing circuit according to claim 24, wherein the processing circuit is further configured such that the MME:

Instruction is sent in S1-AP initial context setting request message, the instruction is used to indicate the UE and passes through use Plane connection in family retransmits the data of the CPSR message.