CN103582059A - Redirection method, redirection device, mobile terminal and base station - Google Patents
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Abstract
The invention discloses a redirection method. After a message which is sent by an LTE system base station and has a redirection command is received by a terminal, redirection access to an HRPD network is carried out; and before or after the message which is sent by the LTE system base station and has the redirection command is received, different system measurement is carried out by the terminal to acquire information about whether access to the HRPD network can be carried out, moreover, HRPD network auxiliary information which assists the terminal to fast access to the HRPD network is further sent by the LTE system base station to the terminal. The invention further discloses a redirection device, a mobile terminal and a base station. When redirection from the LTE system to the HRPD network is carried out, the terminal can fast access to the HRPD network according to the auxiliary information, and redirection time delay of a UE from the LTE system to the HRPD network is greatly reduced.
Description
Technical field
The present invention relates to redirecting technique, relate in particular to a kind of redirected method and device, mobile terminal, base station.
Background technology
The mobile broadband technology of develop rapidly has in recent years been enriched the data service type of mobile network carrying, has promoted the growth of mobile data services; The rapid growth of Mobile data, has proposed again new bandwidth requirement to mobile access, and the two influences each other, and mutually promotes again.Mobile network presents the situation that data service outburst, new technology standard layer go out.In order further to improve mobile network access rate, alleviate the situation of frequency spectrum resource anxiety simultaneously, third generation partner program (the 3GPP of International Standards Organization, The 3rd Generation Partnership Project) accelerated the formulation of Long Term Evolution (LTE, Long Term Evolution) technical standard., in order to ensure the service-aware that existing mobile subscriber is good, experience, LTE standard, in formulation process, has been carried out large quantity research to the interoperability characteristic between existing system, and has been made regulation meanwhile.
Particularly, code division multiple access (CDMA, Code Division Multiple Access) interoperability of the follow-up evolution CDMA HRPD (high rate packet data) of network (HRPD, High Rate Packet Data) system and LTE network is a trend of network Development.Commercial CDMA HRPD network evolves to LTE network, is not a simple alternative Process, but has a very long co-existence periods, and in this co-existence periods, interconnecting of two kinds of wireless networks is essential.In general, HRPD network is disposed as wide covering, Fig. 1 is the structural representation that LTE network and HRPD mixture of networks are disposed, as shown in Figure 1, LTE system can be used as cover to mend blind or hoist capacity and disposes, but HRPD network also can cover respectively different geographical position from LTE system.In order to support two kinds of interoperability between system, LTE has mainly defined community selection and gravity treatment, data exchange, voice switch and wireless connections such as are redirected at several aspects.
The redirection process of LTE protocol definition refers to that first terminal needs to disconnect the radio communication of sources traffic system, then under the idle condition of destinations traffic system, search and resident certain community to destinations traffic system, last Gai initiates wireless access and service request process in community again.For reduced break period, between sources traffic system and destinations traffic system, can set up transparent signaling passage, terminal is by setting up virtual wireless connections between this transparent signaling passage and the wireless control node of destinations traffic system.Particularly, terminal, before the wireless connections of disconnection and sources traffic system, first completes the registration process in destinations traffic system by this transparent signaling passage in advance.Described pre-registration process refers to that terminal fulfils HPRD registration process (UATI application, session configuring negotiation etc.) ahead of schedule in E-UTRAN region by the tunnel between LTE-HRPD.The pre-registration aloft main process in interface has: fast mobile terminal is during to the pre-registration region of LTE system, and OMP common parameter PreregistrationAllowed=1, initiates pre-registration process; Terminal is established to the tunnel of HRPD network, by signaling tunnel and HRPD network, carries out the distribution of UATI, and the configuring negotiation of protocol parameter, sets up session.Wherein, OMP is the broadcast message of HPRD, it is that terminal has been decided to do the pre-registration of HRPD network by LTE network that terminal will be gone the prerequisite of intercepting, terminal just can go to intercept OMP message like this, certainly OMP message is to be delivered to LTE network by S101 tunnel interface, and by the terminal of eating dishes without rice or wine to be handed down to of LTE system.In pre-registration process, the HRPD network parameter that terminal can obtain by LTE idle message mainly contains: HRPD network system time, search window, adjacent area frequency range, PN etc.
Wherein, LTE to HRPD wireless connections are redirected flow process and refer to that LTE network is under overload or other reasons, by LTE system base-station (eNB, enhanced Node Basestation) initiatively send RRC connection release message (RRCConnectionRelease Message) to user terminal (User Terminal), wherein specified the carrier frequency information that will redirect, comprise band information (bandclass) and absolute frequency point number (ARFCN, Absolute Radio Frequency Channel Number).This flow process has avoided terminal voluntarily accessible network to be carried out to blind Detecting, has therefore shortened the time delay of UE when transition between systems.But because the supplementary that LTE agreement supports eNB to carry is at present less, so LTE to HRPD redirection process is still very slow, has very large time delay in existing network.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of redirected method and device, mobile terminal, base station, can make the time delay of UE from LTE system to HRPD network redirection diminish.
For achieving the above object, technical scheme of the present invention is achieved in that
A redirected method, comprising:
Terminal receives the message that carries redirect command that LTE system base-station sends and assists described terminal to access fast after the supplementary of HRPD network of HRPD network, carries out the redirected access of described HRPD network.
Preferably, described method also comprises:
Before or after receiving the message that carries redirect command of described LTE system base-station transmission, described terminal is carried out isosystem measurement, obtains the information that can described HRPD network access.
Preferably, described in the supplementary of described HRPD network is carried on, carry in the message of redirect command and send to described terminal, or the supplementary of described HRPD network is carried on and in system message, is broadcast to described terminal.
Preferably, described method also comprises:
The supplementary of described HRPD network is pre-configured in LTE system;
Or, by the supplementary of described HRPD network, notify the system to LTE, the supplementary of HRPD network described in described LTE system storage.
Preferably, the described supplementary by described HRPD network is notified the system to LTE, comprising:
Described HRPD network is notified described LTE system by the supplementary of described HRPD network by the backhaul interface between described HRPD network and described LTE system.
Preferably, described backhaul interface be S101 tunnel or for new definition for interface mutual between described HRPD network and described LTE system.
Preferably, the supplementary of described HRPD network comprise following information one of at least:
The Physical Cell Identifier of Target cell, rapid configuration relevant parameter, sector relevant parameter, access relevant parameter.
Preferably, the message that carries redirect command described in comprises that Radio Resource control connection discharges RRCConnectionRelease message.
A redirected device, comprises receiving element and performance element, wherein:
Receiving element, for receiving the message that carries redirect command of LTE system base-station transmission and assisting described terminal to access fast the supplementary of the HRPD network of HRPD network;
Performance element, for carrying out the redirected access of described HRPD network.
Preferably, described device also comprises measuring unit and acquiring unit, wherein:
Measuring unit, for receive the message that carries redirect command of described LTE system base-station transmission at described receiving element before or after, carries out isosystem measurement;
Acquiring unit, the information that can access for obtaining described HRPD network.
Preferably, the supplementary of described HRPD network comprise following information one of at least:
The Physical Cell Identifier of Target cell, rapid configuration relevant parameter, sector relevant parameter, access relevant parameter;
The described message that carries redirect command comprises that Radio Resource control connection discharges RRCConnectionRelease message.
, comprise aforesaid redirected device.
, for the supplementary of HRPD network being carried on to message or the system message that carries redirect command, and send to terminal.
In the present invention, terminal receives after the message that carries redirect command of LTE system base-station transmission, carries out the redirected access of HRPD network; And before or after receiving the message that carries redirect command of LTE system base-station transmission, terminal is carried out isosystem measurement, obtains the information that can described HRPD network access.In addition, LTE system base-station also sends the supplementary of assisting terminal to access fast the HRPD network of HRPD network to terminal.When carrying out LTE system to HRPD network redirected, terminal can directly be linked into HRPD network according to above-mentioned supplementary fast, has greatly reduced the time delay of UE from LTE system to HRPD network redirection.
Accompanying drawing explanation
Fig. 1 is the structural representation that LTE network and HRPD mixture of networks are disposed;
Fig. 2 is the flow chart of the redirected method of the embodiment of the present invention;
Fig. 3 is the flow chart of another redirected method of the embodiment of the present invention;
Fig. 4 is the composition structural representation of the redirected device of the embodiment of the present invention.
Embodiment
Basic thought of the present invention is: terminal receives after the message that carries redirect command of LTE system base-station transmission, carries out the redirected access of HRPD network; Wherein, LTE system base-station also sends the supplementary of assisting terminal to access fast the HRPD network of HRPD network to terminal.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Embodiment mono-
Fig. 2 is the flow chart of the redirected method of the embodiment of the present invention, and as shown in Figure 2, the redirected method of this example comprises the following steps:
Step 201, LTE system base-station sends LTE system to HRPD network redirection message to mobile terminal.
In this example, redirect message is RRCConnectionRelease message, in this RRCConnectionRelease message, except carrying redirect command, also carries the supplementary that is redirected to HRPD network from LTE system.
In the present invention, redirected reason comprises that mobile terminal has entered into the overlay area of HRPD network base station from the overlay area of LTE system base-station, or because path fading etc. causes transmitting of LTE system base-station to be on duty mutually and the transmitting better etc. of HRPD network base station.
Step 202, terminal is redirected to HPRD network based on HRPD network-assist information.
Wherein, before LTE system base-station sends redirect command, between LTE system base-station and terminal, may carry out nearby region measurement.Specifically comprise: LTE system base-station sends different system HRPD Neighboring Cell List message to terminal, terminal is carried out adjacent area HRPD and is measured and reporting measurement result.LTE system base-station is redirected to terminal on suitable HRPD base station based on this measurement report.
Wherein, before or after LTE system base-station sends redirect command, if terminal, in the pre-registration region of LTE system, can be determined to carry out pre-registration on HRPD network by system or terminal.
In the present invention, from LTE system be redirected to the supplementary of HRPD network can configured in advance to LTE system as being disposed at base station side or core-network side, terminal is carried out while being redirected determining, by base station by aforementioned RRCConnectionRelease message informing to terminal.Certainly, the supplementary that is redirected to HRPD network from LTE system also can or send to LTE system immediately by HRPD network cycle.For example, when renewal has occurred the supplementary of adjacent area HRPD network, HRPD network and LTE system carry out alternately, and the supplementary that LTE system acquisition storage are redirected to HRPD network from LTE system is notified in time to terminal.For example, when the supplementary that is redirected to HRPD network from LTE system is upgraded, HRPD network is notified LTE system by the supplementary of HRPD network by the backhaul interface between HRPD network and LTE system.Backhaul interface be S101 tunnel or for new definition for interface mutual between HRPD network and LTE system.
In order to support the present embodiment, in RRCConncetionRelease message, need the beared information of increase as follows:
HPRD cell information list: CellInfoListHPRD, HRPD Physical Cell Identifier (PhysCellIdHRPD), HPRD carrier frequency (CarrierFreqHRPD), HRPD system information list (SystemInfoListHRPD); Wherein, SystemInfoListHRPD correspondence the rapid configuration message (QuickConfig) in HRPD network, sector parameters (SectorParameter), access parameter (Access Parameters) etc.In order to save the bandwidth resources of LTE system, the field in following message can suitably be deleted.
For instance, in QuickConfig message, can carry colour coding (ColorCode), sector mark SectorID24, sector signature (SectorSignature), access signature (AccessSignature), in SectorParameter message, can carry boundary code (CountryCode), sector mark (SectorID), SectorSignature, relevant link silence period (ReverseLinkSilenceDuration), between relevant link quiet period (ReverseLinkSilencePeriod), the number of channel (ChannelCount (Channel)), the extended channel comprising (ExtendedChannelIncluded), spreading channel (ExtendedChannelCount), extended channel (ExtendedChannel), the access hash mask channel (AccessHashingChannelMaskIncluded) comprising, access hash mask-length (AccessHashingMaskLength), with previously identical access hashed channel mask (AccessHashingChannelMaskSameAsPrevious), access hashed channel mask (AccessHashingChannelMask) etc.,
In AccessParameters, can carry: access cycle period (AccessCycleDuration), access features (ccessSignature), (OpenLoopAdjust) adjusted in open loop, pointer is initially adjusted EACMAC (ProbeInitialAdjustEACMAC), survey number stepping (ProbeNumStep), preamble length (PreambleLength), maximum cell length (CapsuleLengthMax), continuation (APersistence), the evolution access parameter (EnhancedAccessParametersIncluded) comprising, preamble length time slot (PreambleLengthSlots), access biasing (AccessOffset), the maximum access rate (SectorAccessMaxRate) in sector, surpass detection time adjustment (ProbeTimeOutAdjust), symbolic pilot frequency intensity (PilotStrengthNominal), the minimum error correction (PilotStrengthCorrectionMin) of pilot frequency intensity, the maximum error correction (PilotStrengthCorrectionMax) of pilot frequency intensity, the maximum pilot code random delay (MaxPNRandomizationDelayIncluded) comprising, maximum pilot code random delay (MaxPNRandmizationDelay), the urgent continuation (EmergencyAPersistenceIncluded) comprising, urgent continuation (EmergencyAPersistence), the continuation based on configuration file (ProfileBasedAPersistenceIncluded) comprising, configuration file number (NumProfiles), configuration file number sign (NumProfileID), the general continuation (CommonPersistenceIncluded) comprising, general continuation (CommonAPersistence), continuation based on configuration file (ProfileBasedAPersistence) etc.
In this example, while carrying the supplementary of the HRPD network of assisting described terminal to access fast described HRPD network in the redirect command that LTE system base-station sends to terminal, terminal can be determined fast and treat redirected HRPD network cell according to these supplementarys, be implemented to the quick access of HRPD network cell, thereby greatly shortened terminal, from LTE system, be redirected to the time delay of HRPD network.
Embodiment bis-
Fig. 3 is the flow chart of another redirected method of the embodiment of the present invention, and as shown in Figure 3, the redirected method of this example comprises:
Step 301, LTE system base-station sends LTE system to HRPD network redirection message to mobile terminal.
In this example, redirect message is RRCConnectionRelease message, in this RRCConnectionRelease message, carries redirect command.
In addition, LTE system base-station also by system message as SIB8, the supplementary that is redirected to HRPD network from LTE system is notified to terminal.In this example, SIB8 sends to terminal by the mode of broadcast.
In the present invention, redirected reason comprises that mobile terminal has entered into the overlay area of HRPD network base station from the overlay area of LTE system base-station, or because path fading etc. causes transmitting of LTE system base-station to be on duty mutually and the transmitting better etc. of HRPD network base station.
Step 302, terminal is redirected to HPRD network based on HRPD network-assist information.
In the present invention, from LTE system be redirected to the supplementary of HRPD network can configured in advance to LTE system as being disposed at base station side or core-network side, by base station, by SIB8, notified to terminal.Certainly, the supplementary that is redirected to HRPD network from LTE system also can or send to LTE system immediately by HRPD network cycle.For example, when renewal has occurred the supplementary of adjacent area HRPD network, HRPD network and LTE system carry out alternately, and the supplementary that LTE system acquisition storage are redirected to HRPD network from LTE system is notified in time to terminal.For example, when the supplementary that is redirected to HRPD network from LTE system is upgraded, HRPD network is notified LTE system by the supplementary of this HRPD network by the backhaul interface between HRPD network and LTE system.Wherein, backhaul interface be S101 tunnel or for new definition for interface mutual between HRPD network and LTE system.
Wherein, in order to make terminal be linked into fast Target cell, the information of the Target cell of can carried terminal in redirect command message being redirected to, Physical Cell Identifier for example, carrier frequency information etc.Certainly, these information also can be notified to terminal by SIB8.
Similarly, similar with previous embodiment one, before LTE system base-station sends redirect command, between LTE system base-station and terminal, may carry out nearby region measurement.Specifically comprise: LTE system base-station is that terminal sends different system HRPD Neighboring Cell List message, terminal is carried out adjacent area HRPD and is measured and reporting measurement result.LTE system base-station is redirected to terminal on suitable HRPD base station based on this measurement report.
Similarly, similar with aforementioned enforcement one, before or after LTE system base-station sends redirect command, if terminal, in the pre-registration region of LTE system, can be determined to carry out pre-registration on HRPD network by system or terminal.
Similarly, in order to support the present embodiment, in SIB8 message, need the information of increase identical with the information that needs in previous embodiment one RRCConncetionRelease message to increase.Specifically need the information increasing referring to previous embodiment one, repeat no more here.
Fig. 4 is the composition structural representation of the redirected device of the embodiment of the present invention, as shown in Figure 4, and redirected device receiving element 40 and the performance element 41 of this example, wherein:
Receiving element 40, for receiving the message that carries redirect command of LTE system base-station transmission and assisting the described terminal supplementary of the HRPD network of the described HRPD network of access fast;
Performance element 41, for carrying out the redirected access of HRPD network.
On the basis of the redirected device shown in Fig. 4, the redirected device of the embodiment of the present invention also comprises measuring unit (not shown) and acquiring unit (not shown), wherein:
Measuring unit, for receive the message that carries redirect command of described LTE system base-station transmission at described receiving element 40 before or after, carries out isosystem measurement;
Acquiring unit, the information that can access for obtaining described HRPD network.
The supplementary of described HRPD network comprise following information one of at least:
The Physical Cell Identifier of Target cell, rapid configuration relevant parameter, sector relevant parameter, access relevant parameter;
The described message that carries redirect command comprises that Radio Resource control connection discharges RRCConnectionRelease message.
The practical function that it will be appreciated by those skilled in the art that the each processing unit in the redirected device shown in Fig. 4 can be with reference to the associated description of aforementioned redirected method and is understood.The function that it will be appreciated by those skilled in the art that each processing unit in the redirected device shown in Fig. 4 can realize by the program running on processor, also can realize by concrete logical circuit.
The present invention has also recorded a kind of terminal, comprises the redirected device shown in earlier figures 4.
The present invention has also recorded a kind of base station, for the supplementary of HRPD network being carried on to message or the system message that carries redirect command; And, described message or the system message that carries redirect command sent to described terminal.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (13)
1. a redirected method, is characterized in that, described method comprises:
Terminal receives the message that carries redirect command that Long Term Evolution LTE system base-station sends and assists described terminal to access fast after the supplementary of HRPD network of HRPD (high rate packet data) HRPD network, carries out the redirected access of described HRPD network.
2. method according to claim 1, is characterized in that, described method also comprises:
Before or after receiving the message that carries redirect command of described LTE system base-station transmission, described terminal is carried out isosystem measurement, obtains the information that can described HRPD network access.
3. method according to claim 1, it is characterized in that, described in the supplementary of described HRPD network is carried on, carry in the message of redirect command and send to described terminal, or the supplementary of described HRPD network is carried on and in system message, is broadcast to described terminal.
4. method according to claim 1, is characterized in that, described method also comprises:
The supplementary of described HRPD network is pre-configured in LTE system;
Or, by the supplementary of described HRPD network, notify the system to LTE, the supplementary of HRPD network described in described LTE system storage.
5. method according to claim 4, is characterized in that, the described supplementary by described HRPD network is notified the system to LTE, comprising:
Described HRPD network is notified described LTE system by the supplementary of described HRPD network by the backhaul interface between described HRPD network and described LTE system.
6. method according to claim 5, is characterized in that, described backhaul interface be S101 tunnel or for new definition for interface mutual between described HRPD network and described LTE system.
7. according to the method described in claim 1 to 6 any one, it is characterized in that, the supplementary of described HRPD network comprise following information one of at least:
The Physical Cell Identifier of Target cell, rapid configuration relevant parameter, sector relevant parameter, access relevant parameter.
8. method according to claim 7, is characterized in that, described in carry redirect command message comprise that Radio Resource control connection discharges RRCConnectionRelease message.
9. a redirected device, is characterized in that, described device comprises receiving element and performance element, wherein:
Receiving element, for receiving the message that carries redirect command of LTE system base-station transmission and assisting described terminal to access fast the supplementary of the HRPD network of HRPD network;
Performance element, for carrying out the redirected access of described HRPD network.
10. device according to claim 9, is characterized in that, described device also comprises measuring unit and acquiring unit, wherein:
Measuring unit, for receive the message that carries redirect command of described LTE system base-station transmission at described receiving element before or after, carries out isosystem measurement;
Acquiring unit, the information that can access for obtaining described HRPD network.
11. according to the device described in claim 9 or 10, it is characterized in that, the supplementary of described HRPD network comprise following information one of at least:
The Physical Cell Identifier of Target cell, rapid configuration relevant parameter, sector relevant parameter, access relevant parameter;
The described message that carries redirect command comprises that Radio Resource control connection discharges RRCConnectionRelease message.
12. 1 kinds of mobile terminals, is characterized in that, described mobile terminal comprises the redirected device described in claim 9 to 11 any one.
13. 1 kinds of base stations, is characterized in that, the supplementary of HRPD network is carried in the message or system message that carries redirect command, and sends to terminal.
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Application publication date: 20140212 |