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CN100466517C - Conversion method of the long-evolving network and its user device states - Google Patents

Conversion method of the long-evolving network and its user device states Download PDF

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Publication number
CN100466517C
CN100466517C CNB2006100056233A CN200610005623A CN100466517C CN 100466517 C CN100466517 C CN 100466517C CN B2006100056233 A CNB2006100056233 A CN B2006100056233A CN 200610005623 A CN200610005623 A CN 200610005623A CN 100466517 C CN100466517 C CN 100466517C
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subscriber equipment
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state
radio resource
resource control
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CN1996845A (en
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胡灏
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Beijing Jingshi Intellectual Property Management Co ltd
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Huawei Technologies Co Ltd
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  • Mobile Radio Communication Systems (AREA)

Abstract

This invention relates to communication technique and discloses one long time progress network and its user device status conversion method, which comprises the following steps: in two layers of LTE network rack, encode manages the status UE of RRC for LTE-RRC-Active and sustains messages; UE transfers from LTE-Detached into LTE-Idle and establishing RRC connection with encode to fulfill the network register and then deleting the RRC connection.

Description

Long-term evolving network reaches the wherein conversion method of status of user equipment
Technical field
The present invention relates to the communication technology, particularly long-term evolving network.
Background technology
Mobile communication technology entered since the second generation mobile communication (The Second Generation is called for short " 2G ") from 20 end of the centurys, had obtained developing rapidly.But along with the increase of number of users, and to the improving constantly of requirements such as class of business and performance, 2G demonstrates the restriction at aspects such as data transmission capabilities gradually.Therefore, the 3G (Third Generation) Moblie that data transmission capabilities is stronger (The Third Generation, be called for short " 3G ") has entered the high speed development stage, and moving communicating field presents by 2G progressively to the situation of 3G transition.
When the 3G system progressively entered commercialization, industry had begun Research on New work.The company that has is called super 3G (Super3G) technology with these new technologies, also has company to be called the 3.9G technology.3.9G the data traffic transmission speed of technology will reach about 100Mbps, and introduce a large amount of advanced technologies, as OFDM (Orthogonal Frequency Division Multiplexing, be called for short " OFDM ") and multiple-input and multiple-output (Multiple Input Multiple Output, be called for short " MIMO ") etc., unification is called the evolved technology of 3G with these advanced technologies in China, also is the E3G technology.
In order to realize the standardization of E3G technology, since the end of the year in 2004, third generation partner program (3rd Generation Partnership Project is called for short " 3GPP ") and 3GPP2 successively began corresponding research work.
Along with high speed downlink packet inserts (High Speed Downlink Packet Access, be called for short " HSDPA "), the introducing of enhanced uplink enhancement techniques such as (Enhanced Uplink), the 3GPP wireless access technology has very high competitiveness in a few years from now on.Yet in order to guarantee the competitiveness of longer time (as 10 years or longer), 3GPP started Long Term Evolution (LongTerm Evolution is called for short " LTE ") project since the second half year in 2004.
In order to support the mixed networking of 2G in the evolution process of 3G, circuit commutative field at mobile communication system, 3G standard universal mobile telecommunications system (Universal Mobile TelecommunicationsSystem, be called for short " UMTS ") stipulated the basic configuration of the public land mobile net (Public Land Mobile Networks is called for short " PLMN ") of support circuit-switched territory and grouping commutative field service and interface.
Stack up is said, the UMTS system is by subscriber equipment (User Equipment, abbreviation " UE "), universal mobile telecommunications system grounding wireless access network (UMTS Terrestrial Radio Access Network, be called for short " UTRAN ") and core net (Core Network is called for short " CN ") composition.
The RNS (Radio NetworkSubsystem is called for short " RNS ") that comprises many CN of being connected among the UTRAN again.A RNS comprises a radio network controller (Radio NetworkController is called for short " RNC ") and one or more base station (NodeB), and each NodeB covers one or more sub-districts.
Radio channel resource between UTRAN and the UE is divided physical channel and transmission channel.Wherein, transmission channel is divided into two kinds according to data transmission manner and characteristics on wave point: dedicated transmission channel and Common transport channel.
Dedicated transmission channel has only a kind of, and promptly given transmission channel (Dedicated Transport Channels is called for short " DCH ") can be upstream or downstream, covers the part of a whole sub-district or an employing beam-shaped antenna coverage cell; Common transport channel has broadcast channel (Broadcast Channel, abbreviation " BCH "), forward access channel (Forward Access Channel, abbreviation " FACH "), paging channel (Paging Channel, abbreviation " PCH "), Random Access Channel (Random AccessChannel, abbreviation " RACH "), CPCH (Common Packet Channel, be called for short " CPCH ") and DSCH Downlink Shared Channel (Downlink Shared Channel is called for short " DSCH ").Wherein, RACH is a up channel, is used for transmitting the control information from UE, also can be used for transmitting a spot of grouped data, all must monitor RACH in whole sub-district.
Radio channel resource between UTRAN and the UE is by Radio Resource control (Radio ResourceControl, abbreviation " RRC ") agreement is distributed control, and for example handover management control, dynamic frequency are selected, activation and release, power saving and the power control etc. of UE.
A kind of prior art is present 3G network.In existing 3G network structure, three node layers are arranged, be respectively NodeB, RNC and MSC or service universal grouping wireless business supporting node (ServingGPRS Support Node is called for short " SGSN ").And the protocol status of RRC is divided into idle pulley (UE Idle Mode) and connection mode (UTRA RRC ConnectedMode) as shown in Figure 1 under this structure.
Specifically, under idle pulley, UE without any the RRC signal connect, except paging (Paging) with broadcast (Broadcast) employed data transmission channel, do not take the radio channel resource of system.
And under connection mode, set up the RRC signal to connect, can between UE and RNC, transmit RRC message, under this state, UE is with the radio channel resource of using system.Behaviour in service according to the radio channel resource, can be subdivided into UTRAN Acceditation Area paging channel (UTRAN RegistrationArea Paging Channel is called for short " URA_PCH "), cell paging channel (Cell_PCH), cell-specific transmission channel (Cell_DCH) and four kinds of states of cell forward access channel (Cell_FACH) again.
UE under the idle condition will connect by RRC and set up the process response; UE under URA_PCH and the Cell_PCH state will respond by cell updating course; UE under the Cell_DCH state will be by setting up bag mobile management (Packet Mobility Management is called for short " PMM ") connection procedure response; Under the Cell_FACH state, control information of transmitting to UE when the UE position is known by system or short UE packet.
The problem of this scheme is the complicated network structure, and the system interconnection cost is higher; RRC protocol status complexity, implication are unintelligible, equipment realizes that software complexity is higher; Be not suitable for the requirement of LTE network.Cause the reason of this problem to be:
Owing to adopt the network configuration of three node layers, its complex structure.
Because need direct physical interconnections between the NodeB, the system interconnection cost is higher.
Because as shown in Figure 1, the protocol status of RRC has two kinds, and wherein connection status is also divided four kinds, so apparent, that the protocol status complexity of RRC, implication are divided is unintelligible, equipment realizes that software complexity is higher, also therefore is not suitable for the requirement of LTE network.
Another kind of prior art is just in question LTE network.The UE state is reduced to three kinds of states in the evolution process of LTE, is respectively off-line (LTE-Detached), idle (LTE-Idle) and (LTE-RRC-Active) state of activation.Specifically, under the LTE-Detached state, network side does not receive any information of UE; Not having RRC during the LTE-Idle state connects; There is RRC to connect under the LTE-RRC-Active state.
Simultaneously, the network configuration of three node layers is simplified to the structure of two-layer node, as shown in Figure 2, the RNC function is split to NodeB, be called enode b (evolutional Node B, be called for short " eNodeB ") and such as in the gateway upper level node of (Gateway is called for short " GW "), this upper level node is also referred to as central node or Anchor.In the prior art, under the LTE-RRC-Active state, RRC context and UE context all are stored among the GW.
The subject matter of this scheme is: the GW maintenance is too big, and the flow process of Signalling exchange is more loaded down with trivial details.Its main cause is:
Because adopt the network configuration of two-layer node, the management of Radio Resource in GW, so that the maintenance of GW is too big.
Because no direct physical connects between each eNodeB,, also make RRC Signalling exchange between UE and the GW all need the transfer of eNodeB, so flow process is more loaded down with trivial details though reduced internodal interconnection cost.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of long-term evolving network to reach the wherein conversion method of status of user equipment, makes the RRC processing speed be improved, and internodal transport overhead reduces.
For achieving the above object, the invention provides a kind of long-term evolving network, comprise:
At least one enode b and at least one gateway node, each enode b is connected with a gateway node at least, and subscriber equipment inserts described network by air interface by enode b; The state of subscriber equipment comprises state of activation and idle condition at least, and described enode b also is used for the subscriber equipment that is in state of activation is carried out Radio Resource control, safeguards the described Radio Resource control context that is in the subscriber equipment of state of activation;
Described gateway node also is used for the subscriber equipment that is in idle condition is carried out mobile management, safeguards the described context that is in the subscriber equipment of idle condition.
In addition, the interactive information between the described enode b is by described gateway node transfer.
The present invention also provides the conversion method of status of user equipment in a kind of long-term evolving network, is applied to above-mentioned long-term evolving network, comprises following steps:
After being in the subscriber equipment start of off-line state, by with enode b set up the Radio Resource control connection alternately;
Described subscriber equipment uses described connection to network registry, and creates the context of this subscriber equipment at gateway node;
Radio Resource control connection after succeeding in registration between described enode b release and described subscriber equipment;
Described subscriber equipment enters idle condition, and described gateway node keeps the context of this subscriber equipment.
The present invention also provides the conversion method of status of user equipment in a kind of long-term evolving network, is applied to above-mentioned long-term evolving network, comprises following steps:
When being in the user equipment start service of off-line state, by with enode b set up the Radio Resource control connection alternately, this enode b is created the Radio Resource control context of this subscriber equipment and is carried out Radio Resource control, and this subscriber equipment enters state of activation;
The subscriber equipment that is in state of activation uses described connection to network registry;
After succeeding in registration, described subscriber equipment uses described connection to initiate service request to described gateway node.
The present invention also provides the conversion method of status of user equipment in a kind of long-term evolving network, is applied to above-mentioned long-term evolving network, comprises following steps:
The subscriber equipment that is in idle condition is when needs are initiated business, by with enode b set up the Radio Resource control connection alternately, this enode b is created the Radio Resource control context of this subscriber equipment and is carried out Radio Resource control, and this subscriber equipment enters state of activation;
The subscriber equipment that is in state of activation uses described connection to initiate service request to described gateway node.
The present invention also provides the conversion method of status of user equipment in a kind of long-term evolving network, is applied to above-mentioned long-term evolving network, comprises following steps:
Gateway node obtains to be in the paging domain at the subscriber equipment place of idle condition according to the customer equipment context that kept, and initiates paging to this zone;
The described paging of described user device responsive, by with enode b set up the Radio Resource control connection alternately, this enode b is created the Radio Resource control context of this subscriber equipment and is carried out Radio Resource control, this subscriber equipment enters state of activation;
The subscriber equipment that is in state of activation uses described connection to initiate service request to described gateway node.
The present invention also provides the conversion method of status of user equipment in a kind of long-term evolving network, is applied to above-mentioned long-term evolving network, comprises following steps:
Enode b sends the message that discharges the Radio Resource control connection to the subscriber equipment that is in state of activation;
The described message of described user device responsive discharges related resource, and enters idle condition;
After described enode b is received response, delete the Radio Resource control context of described subscriber equipment;
Gateway node carries out mobile management according to the customer equipment context that is kept to described subscriber equipment.
By finding that relatively the main distinction of technical scheme of the present invention and prior art is, in the LTE network architecture of two-layer node design, carries out the RRC management of LTE-RRC-Active state UE by eNodeB, safeguards the RRC context of these UE.Carry out the mobile management of LTE-Idle state UE by GW, safeguard the context of these UE.There is not direct-connected interface between each eNodeB.
UE wants to set up RRC with eNodeB earlier and is connected during from the LTE-Detached state transitions to the LTE-Idle state, finishes to delete RRC again connect behind network registry, and promptly the of short duration LTE-RRC-Active state of UE elder generation process enters the LTE-Idle state again.The UE of LTE-Detached state can directly enter the LTE-RRC-Active state, with directly initiate service request after eNodeB sets up RRC and is connected to GW.
Difference on this technical scheme has brought comparatively significantly beneficial effect, promptly because RRC manages in eNodeB, does not need to pass through other low layer function entities so RRC handles, and processing speed is high and do not have a transport overhead.
Because the LTE-Idle state mobile management of UE is realized by GW, each LTE-Idle state UE context concentrates on GW, so, reduced node flow when UE need not transmit the UE context between eNodeB when the scope from an eNodeB moves to the scope of another eNodeB.When LTE-Idle state UE was paged, GW did not need to search to lower level node the position of UE, can directly initiate paging to the paging zone at UE place, had improved paging efficiency.
Because there is not direct-connected interface between each eNodeB, can reduce the complexity of network greatly, reduce network construction cost.
Description of drawings
Fig. 1 is the RRC state exchange schematic diagram of 3G network in the prior art;
Fig. 2 is a LTE Network Layering structural representation in the prior art;
Fig. 3 is the RRC state exchange schematic diagram of LTE network of the present invention;
Fig. 4 is according to UE state transition method flow chart in the LTE network of second embodiment of the invention;
Fig. 5 is according to UE state transition method flow chart in the LTE network of third embodiment of the invention;
Fig. 6 is according to UE state transition method flow chart in the LTE network of four embodiment of the invention;
Fig. 7 is according to UE state transition method flow chart in the LTE network of fifth embodiment of the invention;
Fig. 8 is according to UE state transition method flow chart in the LTE network of sixth embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is according to the requirement of LTE two-layer node structure Design, as shown in Figure 2, the RRC method that provides a kind of LTE of meeting to require, as shown in Figure 3, simplify the complex state of the aerial RRC agreement of 3G of prior art, thereby and simplified the demand that the state transition process process satisfies LTE Network Long Term Evolution.
The LTE network configuration of first embodiment of the invention also is the branch two-layer node, with shown in Figure 2, comprises two eNodeB (at least one can be more) and (or a plurality of) GW node.
Wherein, each eNodeB is connected with (or a plurality of) GW, UE by air interface by the eNodeB access network.In addition, the state of UE comprises LTE-RRC-Active state, LTE-Idle state and LTE-Detached state as shown in Figure 3.
Specifically, comprise the RRC management entity among the eNodeB, be used for the UE that is in the LTE-RRC-Active state is carried out RRC control, and safeguard the RRC context of these UE.In other words, network side all places eNodeB to all management of RRC, and upper layer node (GW) no longer needs to be concerned about the relevant treatment of RRC.Because RRC manages in eNodeB, so handling, RRC do not need to pass through other low layer function entities, processing speed is high and do not have a transport overhead.
GW carries out mobile management to the UE that is in the LTE-Idle state, safeguards the context of these UE.Because each LTE-Idle state UE context concentrates on GW,, reduced node flow so when the scope from an eNodeB moves to the scope of another eNodeB, the UE context need do not transmitted between eNodeB as UE.When LTE-Idle state UE was paged, GW did not need to search to lower level node the position of UE, can directly initiate paging to the paging zone at UE place, had improved paging efficiency.
Interactive information between the eNodeB does not have direct-connected interface by the GW transfer between each eNodeB, can reduce the complexity of network so greatly, reduces network construction cost.
The UE state transition method as shown in Figure 4 in the LTE network of second embodiment of the invention.
In step 401, be in the UE start of LTE-Detached state, and send the RRC connection request to eNodeB.
In step 402, the RRC that eNodeB sets up UE connects, and notice UE connection is set up.
In step 403, UE returns the RRC connection establishment response, and UE changes of short duration LTE-RRC-Active state over to.
In step 404, the UE of LTE-RRC-Active state uses this connection to network registry, and creates and keep the context of this UE at GW.
In step 405, after succeeding in registration, eNodeB discharge with UE between RRC be connected.
In step 406, after release was finished, UE returned RRC and connects the message that release is finished, and UE enters the LTE-Idle state.
The UE state transition method as shown in Figure 5 in the LTE network of third embodiment of the invention.
In step 501, the UE that is in the LTE-Detached state initiates calling service, sends the RRC connection request to eNodeB simultaneously.
Step 502 is similar with step 402.
In step 503, UE return RRC connect to set up finish response after, eNodeB creates the RRC context of this UE, and carries out the RRC management in eNodeB, does not need to pass through other low layer function entities so RRC handles, processing speed is high and do not have a transport overhead.This UE enters the LTE-RRC-Active state.
Step 504 is also similar with step 404.
In step 505, after UE succeeds in registration, connect to GW initiation service request by this RRC.
The UE state transition method as shown in Figure 6 in the LTE network of four embodiment of the invention.
In step 601, the UE that is in the LTE-Idle state sends the RRC connection request to eNodeB when needs are initiated calling service.
Step 602, step 603 and step 604 are similar to step 502, step 503 and step 505 respectively, and UE changes the LTE-RRC-Active state over to and utilizes RRC to connect to GW initiation service request.
The UE state transition method as shown in Figure 7 in the LTE network of fifth embodiment of the invention.
In step 701, UE is in the LTE-Idle state, and GW obtains to be in the paging domain at the UE place of LTE-Idle state according to the UE context that kept, and initiates paging to this zone.
In step 702, paging is transmitted to this UE by the eNodeB of the paging domain at UE place.
In step 703, UE is to page response, and sets up RRC to the eNodeB request and connect.
Step 704 is similar to step 606 to step 706 and step 604, does not give unnecessary details at this.
The UE state transition method as shown in Figure 8 in the LTE network of sixth embodiment of the invention.
In step 801, eNodeB sends to the UE that is in the LTE-RRC-Active state, discharges the message that RRC connects.
In step 802, UE responds this message, discharges related resource, and enters the LTE-Idle state, receive response by eNodeB after, the RRC context of deletion UE, and GW carries out mobile management according to the UE context that is kept to the UE under the LTE-Idle state.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims (7)

1. long-term evolving network comprises:
At least one enode b and at least one gateway node, each enode b is connected with a gateway node at least, and subscriber equipment inserts described network by air interface by enode b; The state of subscriber equipment comprises state of activation and idle condition at least, it is characterized in that, described enode b also is used for the subscriber equipment that is in state of activation is carried out Radio Resource control, safeguards the described Radio Resource control context that is in the subscriber equipment of state of activation;
Described gateway node also is used for the subscriber equipment that is in idle condition is carried out mobile management, safeguards the described context that is in the subscriber equipment of idle condition.
2. long-term evolving network according to claim 1 is characterized in that, the interactive information between the described enode b is by described gateway node transfer.
3. the conversion method of status of user equipment in the long-term evolving network is characterized in that, is applied to the described long-term evolving network of claim 1, comprises following steps:
After being in the subscriber equipment start of off-line state, by with enode b set up the Radio Resource control connection alternately;
Described subscriber equipment uses described connection to network registry, and creates the context of this subscriber equipment at gateway node;
Radio Resource control connection after succeeding in registration between described enode b release and described subscriber equipment;
Described subscriber equipment enters idle condition, and described gateway node keeps the context of this subscriber equipment.
4. the conversion method of status of user equipment in the long-term evolving network is characterized in that, is applied to the described long-term evolving network of claim 1, comprises following steps:
When being in the user equipment start service of off-line state, by with enode b set up the Radio Resource control connection alternately, this enode b is created the Radio Resource control context of this subscriber equipment and is carried out Radio Resource control, and this subscriber equipment enters state of activation;
The subscriber equipment that is in state of activation uses described connection to network registry;
After succeeding in registration, described subscriber equipment uses described connection to initiate service request to described gateway node.
5. the conversion method of status of user equipment in the long-term evolving network is characterized in that, is applied to the described long-term evolving network of claim 1, comprises following steps:
The subscriber equipment that is in idle condition is when needs are initiated business, by with enode b set up the Radio Resource control connection alternately, this enode b is created the Radio Resource control context of this subscriber equipment and is carried out Radio Resource control, and this subscriber equipment enters state of activation;
The subscriber equipment that is in state of activation uses described connection to initiate service request to described gateway node.
6. the conversion method of status of user equipment in the long-term evolving network is characterized in that, is applied to the described long-term evolving network of claim 1, comprises following steps:
Gateway node obtains to be in the paging domain at the subscriber equipment place of idle condition according to the customer equipment context that kept, and initiates paging to this zone;
The described paging of described user device responsive, by with enode b set up the Radio Resource control connection alternately, this enode b is created the Radio Resource control context of this subscriber equipment and is carried out Radio Resource control, this subscriber equipment enters state of activation;
The subscriber equipment that is in state of activation uses described connection to initiate service request to described gateway node.
7. the conversion method of status of user equipment in the long-term evolving network is characterized in that, is applied to the described long-term evolving network of claim 1, comprises following steps:
Enode b sends the message that discharges the Radio Resource control connection to the subscriber equipment that is in state of activation;
The described message of described user device responsive discharges related resource, and enters idle condition;
After described enode b is received response, delete the Radio Resource control context of described subscriber equipment;
Gateway node carries out mobile management according to the customer equipment context that is kept to described subscriber equipment.
CNB2006100056233A 2006-01-03 2006-01-03 Conversion method of the long-evolving network and its user device states Active CN100466517C (en)

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